7cc5ab1644df82c79cc7cd28c692252619721d75
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/eval.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/buffersink.h"
53 # include "libavfilter/buffersrc.h"
54 #endif
55
56 #include <SDL.h>
57 #include <SDL_thread.h>
58
59 #include "cmdutils.h"
60
61 #include <assert.h>
62
63 const char program_name[] = "ffplay";
64 const int program_birth_year = 2003;
65
66 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
67 #define MIN_FRAMES 25
68 #define EXTERNAL_CLOCK_MIN_FRAMES 2
69 #define EXTERNAL_CLOCK_MAX_FRAMES 10
70
71 /* Minimum SDL audio buffer size, in samples. */
72 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
73 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
74 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
75
76 /* Step size for volume control in dB */
77 #define SDL_VOLUME_STEP (0.75)
78
79 /* no AV sync correction is done if below the minimum AV sync threshold */
80 #define AV_SYNC_THRESHOLD_MIN 0.04
81 /* AV sync correction is done if above the maximum AV sync threshold */
82 #define AV_SYNC_THRESHOLD_MAX 0.1
83 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
84 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
85 /* no AV correction is done if too big error */
86 #define AV_NOSYNC_THRESHOLD 10.0
87
88 /* maximum audio speed change to get correct sync */
89 #define SAMPLE_CORRECTION_PERCENT_MAX 10
90
91 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
92 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
93 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
94 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
95
96 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
97 #define AUDIO_DIFF_AVG_NB   20
98
99 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
100 #define REFRESH_RATE 0.01
101
102 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
103 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
104 #define SAMPLE_ARRAY_SIZE (8 * 65536)
105
106 #define CURSOR_HIDE_DELAY 1000000
107
108 #define USE_ONEPASS_SUBTITLE_RENDER 1
109
110 static unsigned sws_flags = SWS_BICUBIC;
111
112 typedef struct MyAVPacketList {
113     AVPacket pkt;
114     struct MyAVPacketList *next;
115     int serial;
116 } MyAVPacketList;
117
118 typedef struct PacketQueue {
119     MyAVPacketList *first_pkt, *last_pkt;
120     int nb_packets;
121     int size;
122     int64_t duration;
123     int abort_request;
124     int serial;
125     SDL_mutex *mutex;
126     SDL_cond *cond;
127 } PacketQueue;
128
129 #define VIDEO_PICTURE_QUEUE_SIZE 3
130 #define SUBPICTURE_QUEUE_SIZE 16
131 #define SAMPLE_QUEUE_SIZE 9
132 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
133
134 typedef struct AudioParams {
135     int freq;
136     int channels;
137     int64_t channel_layout;
138     enum AVSampleFormat fmt;
139     int frame_size;
140     int bytes_per_sec;
141 } AudioParams;
142
143 typedef struct Clock {
144     double pts;           /* clock base */
145     double pts_drift;     /* clock base minus time at which we updated the clock */
146     double last_updated;
147     double speed;
148     int serial;           /* clock is based on a packet with this serial */
149     int paused;
150     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
151 } Clock;
152
153 /* Common struct for handling all types of decoded data and allocated render buffers. */
154 typedef struct Frame {
155     AVFrame *frame;
156     AVSubtitle sub;
157     int serial;
158     double pts;           /* presentation timestamp for the frame */
159     double duration;      /* estimated duration of the frame */
160     int64_t pos;          /* byte position of the frame in the input file */
161     int width;
162     int height;
163     int format;
164     AVRational sar;
165     int uploaded;
166     int flip_v;
167 } Frame;
168
169 typedef struct FrameQueue {
170     Frame queue[FRAME_QUEUE_SIZE];
171     int rindex;
172     int windex;
173     int size;
174     int max_size;
175     int keep_last;
176     int rindex_shown;
177     SDL_mutex *mutex;
178     SDL_cond *cond;
179     PacketQueue *pktq;
180 } FrameQueue;
181
182 enum {
183     AV_SYNC_AUDIO_MASTER, /* default choice */
184     AV_SYNC_VIDEO_MASTER,
185     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
186 };
187
188 typedef struct Decoder {
189     AVPacket pkt;
190     PacketQueue *queue;
191     AVCodecContext *avctx;
192     int pkt_serial;
193     int finished;
194     int packet_pending;
195     SDL_cond *empty_queue_cond;
196     int64_t start_pts;
197     AVRational start_pts_tb;
198     int64_t next_pts;
199     AVRational next_pts_tb;
200     SDL_Thread *decoder_tid;
201 } Decoder;
202
203 typedef struct VideoState {
204     SDL_Thread *read_tid;
205     AVInputFormat *iformat;
206     int abort_request;
207     int force_refresh;
208     int paused;
209     int last_paused;
210     int queue_attachments_req;
211     int seek_req;
212     int seek_flags;
213     int64_t seek_pos;
214     int64_t seek_rel;
215     int read_pause_return;
216     AVFormatContext *ic;
217     int realtime;
218
219     Clock audclk;
220     Clock vidclk;
221     Clock extclk;
222
223     FrameQueue pictq;
224     FrameQueue subpq;
225     FrameQueue sampq;
226
227     Decoder auddec;
228     Decoder viddec;
229     Decoder subdec;
230
231     int audio_stream;
232
233     int av_sync_type;
234
235     double audio_clock;
236     int audio_clock_serial;
237     double audio_diff_cum; /* used for AV difference average computation */
238     double audio_diff_avg_coef;
239     double audio_diff_threshold;
240     int audio_diff_avg_count;
241     AVStream *audio_st;
242     PacketQueue audioq;
243     int audio_hw_buf_size;
244     uint8_t *audio_buf;
245     uint8_t *audio_buf1;
246     unsigned int audio_buf_size; /* in bytes */
247     unsigned int audio_buf1_size;
248     int audio_buf_index; /* in bytes */
249     int audio_write_buf_size;
250     int audio_volume;
251     int muted;
252     struct AudioParams audio_src;
253 #if CONFIG_AVFILTER
254     struct AudioParams audio_filter_src;
255 #endif
256     struct AudioParams audio_tgt;
257     struct SwrContext *swr_ctx;
258     int frame_drops_early;
259     int frame_drops_late;
260
261     enum ShowMode {
262         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
263     } show_mode;
264     int16_t sample_array[SAMPLE_ARRAY_SIZE];
265     int sample_array_index;
266     int last_i_start;
267     RDFTContext *rdft;
268     int rdft_bits;
269     FFTSample *rdft_data;
270     int xpos;
271     double last_vis_time;
272     SDL_Texture *vis_texture;
273     SDL_Texture *sub_texture;
274     SDL_Texture *vid_texture;
275
276     int subtitle_stream;
277     AVStream *subtitle_st;
278     PacketQueue subtitleq;
279
280     double frame_timer;
281     double frame_last_returned_time;
282     double frame_last_filter_delay;
283     int video_stream;
284     AVStream *video_st;
285     PacketQueue videoq;
286     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
287     struct SwsContext *img_convert_ctx;
288     struct SwsContext *sub_convert_ctx;
289     int eof;
290
291     char *filename;
292     int width, height, xleft, ytop;
293     int step;
294
295 #if CONFIG_AVFILTER
296     int vfilter_idx;
297     AVFilterContext *in_video_filter;   // the first filter in the video chain
298     AVFilterContext *out_video_filter;  // the last filter in the video chain
299     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
300     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
301     AVFilterGraph *agraph;              // audio filter graph
302 #endif
303
304     int last_video_stream, last_audio_stream, last_subtitle_stream;
305
306     SDL_cond *continue_read_thread;
307 } VideoState;
308
309 /* options specified by the user */
310 static AVInputFormat *file_iformat;
311 static const char *input_filename;
312 static const char *window_title;
313 static int default_width  = 640;
314 static int default_height = 480;
315 static int screen_width  = 0;
316 static int screen_height = 0;
317 static int audio_disable;
318 static int video_disable;
319 static int subtitle_disable;
320 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
321 static int seek_by_bytes = -1;
322 static int display_disable;
323 static int borderless;
324 static int startup_volume = 100;
325 static int show_status = 1;
326 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
327 static int64_t start_time = AV_NOPTS_VALUE;
328 static int64_t duration = AV_NOPTS_VALUE;
329 static int fast = 0;
330 static int genpts = 0;
331 static int lowres = 0;
332 static int decoder_reorder_pts = -1;
333 static int autoexit;
334 static int exit_on_keydown;
335 static int exit_on_mousedown;
336 static int loop = 1;
337 static int framedrop = -1;
338 static int infinite_buffer = -1;
339 static enum ShowMode show_mode = SHOW_MODE_NONE;
340 static const char *audio_codec_name;
341 static const char *subtitle_codec_name;
342 static const char *video_codec_name;
343 double rdftspeed = 0.02;
344 static int64_t cursor_last_shown;
345 static int cursor_hidden = 0;
346 #if CONFIG_AVFILTER
347 static const char **vfilters_list = NULL;
348 static int nb_vfilters = 0;
349 static char *afilters = NULL;
350 #endif
351 static int autorotate = 1;
352 static int find_stream_info = 1;
353
354 /* current context */
355 static int is_full_screen;
356 static int64_t audio_callback_time;
357
358 static AVPacket flush_pkt;
359
360 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
361
362 static SDL_Window *window;
363 static SDL_Renderer *renderer;
364
365 #if CONFIG_AVFILTER
366 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
367 {
368     GROW_ARRAY(vfilters_list, nb_vfilters);
369     vfilters_list[nb_vfilters - 1] = arg;
370     return 0;
371 }
372 #endif
373
374 static inline
375 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
376                    enum AVSampleFormat fmt2, int64_t channel_count2)
377 {
378     /* If channel count == 1, planar and non-planar formats are the same */
379     if (channel_count1 == 1 && channel_count2 == 1)
380         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
381     else
382         return channel_count1 != channel_count2 || fmt1 != fmt2;
383 }
384
385 static inline
386 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
387 {
388     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
389         return channel_layout;
390     else
391         return 0;
392 }
393
394 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
395 {
396     MyAVPacketList *pkt1;
397
398     if (q->abort_request)
399        return -1;
400
401     pkt1 = av_malloc(sizeof(MyAVPacketList));
402     if (!pkt1)
403         return -1;
404     pkt1->pkt = *pkt;
405     pkt1->next = NULL;
406     if (pkt == &flush_pkt)
407         q->serial++;
408     pkt1->serial = q->serial;
409
410     if (!q->last_pkt)
411         q->first_pkt = pkt1;
412     else
413         q->last_pkt->next = pkt1;
414     q->last_pkt = pkt1;
415     q->nb_packets++;
416     q->size += pkt1->pkt.size + sizeof(*pkt1);
417     q->duration += pkt1->pkt.duration;
418     /* XXX: should duplicate packet data in DV case */
419     SDL_CondSignal(q->cond);
420     return 0;
421 }
422
423 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
424 {
425     int ret;
426
427     SDL_LockMutex(q->mutex);
428     ret = packet_queue_put_private(q, pkt);
429     SDL_UnlockMutex(q->mutex);
430
431     if (pkt != &flush_pkt && ret < 0)
432         av_packet_unref(pkt);
433
434     return ret;
435 }
436
437 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
438 {
439     AVPacket pkt1, *pkt = &pkt1;
440     av_init_packet(pkt);
441     pkt->data = NULL;
442     pkt->size = 0;
443     pkt->stream_index = stream_index;
444     return packet_queue_put(q, pkt);
445 }
446
447 /* packet queue handling */
448 static int packet_queue_init(PacketQueue *q)
449 {
450     memset(q, 0, sizeof(PacketQueue));
451     q->mutex = SDL_CreateMutex();
452     if (!q->mutex) {
453         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
454         return AVERROR(ENOMEM);
455     }
456     q->cond = SDL_CreateCond();
457     if (!q->cond) {
458         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
459         return AVERROR(ENOMEM);
460     }
461     q->abort_request = 1;
462     return 0;
463 }
464
465 static void packet_queue_flush(PacketQueue *q)
466 {
467     MyAVPacketList *pkt, *pkt1;
468
469     SDL_LockMutex(q->mutex);
470     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
471         pkt1 = pkt->next;
472         av_packet_unref(&pkt->pkt);
473         av_freep(&pkt);
474     }
475     q->last_pkt = NULL;
476     q->first_pkt = NULL;
477     q->nb_packets = 0;
478     q->size = 0;
479     q->duration = 0;
480     SDL_UnlockMutex(q->mutex);
481 }
482
483 static void packet_queue_destroy(PacketQueue *q)
484 {
485     packet_queue_flush(q);
486     SDL_DestroyMutex(q->mutex);
487     SDL_DestroyCond(q->cond);
488 }
489
490 static void packet_queue_abort(PacketQueue *q)
491 {
492     SDL_LockMutex(q->mutex);
493
494     q->abort_request = 1;
495
496     SDL_CondSignal(q->cond);
497
498     SDL_UnlockMutex(q->mutex);
499 }
500
501 static void packet_queue_start(PacketQueue *q)
502 {
503     SDL_LockMutex(q->mutex);
504     q->abort_request = 0;
505     packet_queue_put_private(q, &flush_pkt);
506     SDL_UnlockMutex(q->mutex);
507 }
508
509 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
510 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
511 {
512     MyAVPacketList *pkt1;
513     int ret;
514
515     SDL_LockMutex(q->mutex);
516
517     for (;;) {
518         if (q->abort_request) {
519             ret = -1;
520             break;
521         }
522
523         pkt1 = q->first_pkt;
524         if (pkt1) {
525             q->first_pkt = pkt1->next;
526             if (!q->first_pkt)
527                 q->last_pkt = NULL;
528             q->nb_packets--;
529             q->size -= pkt1->pkt.size + sizeof(*pkt1);
530             q->duration -= pkt1->pkt.duration;
531             *pkt = pkt1->pkt;
532             if (serial)
533                 *serial = pkt1->serial;
534             av_free(pkt1);
535             ret = 1;
536             break;
537         } else if (!block) {
538             ret = 0;
539             break;
540         } else {
541             SDL_CondWait(q->cond, q->mutex);
542         }
543     }
544     SDL_UnlockMutex(q->mutex);
545     return ret;
546 }
547
548 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
549     memset(d, 0, sizeof(Decoder));
550     d->avctx = avctx;
551     d->queue = queue;
552     d->empty_queue_cond = empty_queue_cond;
553     d->start_pts = AV_NOPTS_VALUE;
554     d->pkt_serial = -1;
555 }
556
557 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
558     int ret = AVERROR(EAGAIN);
559
560     for (;;) {
561         AVPacket pkt;
562
563         if (d->queue->serial == d->pkt_serial) {
564             do {
565                 if (d->queue->abort_request)
566                     return -1;
567
568                 switch (d->avctx->codec_type) {
569                     case AVMEDIA_TYPE_VIDEO:
570                         ret = avcodec_receive_frame(d->avctx, frame);
571                         if (ret >= 0) {
572                             if (decoder_reorder_pts == -1) {
573                                 frame->pts = frame->best_effort_timestamp;
574                             } else if (!decoder_reorder_pts) {
575                                 frame->pts = frame->pkt_dts;
576                             }
577                         }
578                         break;
579                     case AVMEDIA_TYPE_AUDIO:
580                         ret = avcodec_receive_frame(d->avctx, frame);
581                         if (ret >= 0) {
582                             AVRational tb = (AVRational){1, frame->sample_rate};
583                             if (frame->pts != AV_NOPTS_VALUE)
584                                 frame->pts = av_rescale_q(frame->pts, av_codec_get_pkt_timebase(d->avctx), tb);
585                             else if (d->next_pts != AV_NOPTS_VALUE)
586                                 frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
587                             if (frame->pts != AV_NOPTS_VALUE) {
588                                 d->next_pts = frame->pts + frame->nb_samples;
589                                 d->next_pts_tb = tb;
590                             }
591                         }
592                         break;
593                 }
594                 if (ret == AVERROR_EOF) {
595                     d->finished = d->pkt_serial;
596                     avcodec_flush_buffers(d->avctx);
597                     return 0;
598                 }
599                 if (ret >= 0)
600                     return 1;
601             } while (ret != AVERROR(EAGAIN));
602         }
603
604         do {
605             if (d->queue->nb_packets == 0)
606                 SDL_CondSignal(d->empty_queue_cond);
607             if (d->packet_pending) {
608                 av_packet_move_ref(&pkt, &d->pkt);
609                 d->packet_pending = 0;
610             } else {
611                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
612                     return -1;
613             }
614         } while (d->queue->serial != d->pkt_serial);
615
616         if (pkt.data == flush_pkt.data) {
617             avcodec_flush_buffers(d->avctx);
618             d->finished = 0;
619             d->next_pts = d->start_pts;
620             d->next_pts_tb = d->start_pts_tb;
621         } else {
622             if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
623                 int got_frame = 0;
624                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &pkt);
625                 if (ret < 0) {
626                     ret = AVERROR(EAGAIN);
627                 } else {
628                     if (got_frame && !pkt.data) {
629                        d->packet_pending = 1;
630                        av_packet_move_ref(&d->pkt, &pkt);
631                     }
632                     ret = got_frame ? 0 : (pkt.data ? AVERROR(EAGAIN) : AVERROR_EOF);
633                 }
634             } else {
635                 if (avcodec_send_packet(d->avctx, &pkt) == AVERROR(EAGAIN)) {
636                     av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
637                     d->packet_pending = 1;
638                     av_packet_move_ref(&d->pkt, &pkt);
639                 }
640             }
641             av_packet_unref(&pkt);
642         }
643     }
644 }
645
646 static void decoder_destroy(Decoder *d) {
647     av_packet_unref(&d->pkt);
648     avcodec_free_context(&d->avctx);
649 }
650
651 static void frame_queue_unref_item(Frame *vp)
652 {
653     av_frame_unref(vp->frame);
654     avsubtitle_free(&vp->sub);
655 }
656
657 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
658 {
659     int i;
660     memset(f, 0, sizeof(FrameQueue));
661     if (!(f->mutex = SDL_CreateMutex())) {
662         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
663         return AVERROR(ENOMEM);
664     }
665     if (!(f->cond = SDL_CreateCond())) {
666         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
667         return AVERROR(ENOMEM);
668     }
669     f->pktq = pktq;
670     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
671     f->keep_last = !!keep_last;
672     for (i = 0; i < f->max_size; i++)
673         if (!(f->queue[i].frame = av_frame_alloc()))
674             return AVERROR(ENOMEM);
675     return 0;
676 }
677
678 static void frame_queue_destory(FrameQueue *f)
679 {
680     int i;
681     for (i = 0; i < f->max_size; i++) {
682         Frame *vp = &f->queue[i];
683         frame_queue_unref_item(vp);
684         av_frame_free(&vp->frame);
685     }
686     SDL_DestroyMutex(f->mutex);
687     SDL_DestroyCond(f->cond);
688 }
689
690 static void frame_queue_signal(FrameQueue *f)
691 {
692     SDL_LockMutex(f->mutex);
693     SDL_CondSignal(f->cond);
694     SDL_UnlockMutex(f->mutex);
695 }
696
697 static Frame *frame_queue_peek(FrameQueue *f)
698 {
699     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
700 }
701
702 static Frame *frame_queue_peek_next(FrameQueue *f)
703 {
704     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
705 }
706
707 static Frame *frame_queue_peek_last(FrameQueue *f)
708 {
709     return &f->queue[f->rindex];
710 }
711
712 static Frame *frame_queue_peek_writable(FrameQueue *f)
713 {
714     /* wait until we have space to put a new frame */
715     SDL_LockMutex(f->mutex);
716     while (f->size >= f->max_size &&
717            !f->pktq->abort_request) {
718         SDL_CondWait(f->cond, f->mutex);
719     }
720     SDL_UnlockMutex(f->mutex);
721
722     if (f->pktq->abort_request)
723         return NULL;
724
725     return &f->queue[f->windex];
726 }
727
728 static Frame *frame_queue_peek_readable(FrameQueue *f)
729 {
730     /* wait until we have a readable a new frame */
731     SDL_LockMutex(f->mutex);
732     while (f->size - f->rindex_shown <= 0 &&
733            !f->pktq->abort_request) {
734         SDL_CondWait(f->cond, f->mutex);
735     }
736     SDL_UnlockMutex(f->mutex);
737
738     if (f->pktq->abort_request)
739         return NULL;
740
741     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
742 }
743
744 static void frame_queue_push(FrameQueue *f)
745 {
746     if (++f->windex == f->max_size)
747         f->windex = 0;
748     SDL_LockMutex(f->mutex);
749     f->size++;
750     SDL_CondSignal(f->cond);
751     SDL_UnlockMutex(f->mutex);
752 }
753
754 static void frame_queue_next(FrameQueue *f)
755 {
756     if (f->keep_last && !f->rindex_shown) {
757         f->rindex_shown = 1;
758         return;
759     }
760     frame_queue_unref_item(&f->queue[f->rindex]);
761     if (++f->rindex == f->max_size)
762         f->rindex = 0;
763     SDL_LockMutex(f->mutex);
764     f->size--;
765     SDL_CondSignal(f->cond);
766     SDL_UnlockMutex(f->mutex);
767 }
768
769 /* return the number of undisplayed frames in the queue */
770 static int frame_queue_nb_remaining(FrameQueue *f)
771 {
772     return f->size - f->rindex_shown;
773 }
774
775 /* return last shown position */
776 static int64_t frame_queue_last_pos(FrameQueue *f)
777 {
778     Frame *fp = &f->queue[f->rindex];
779     if (f->rindex_shown && fp->serial == f->pktq->serial)
780         return fp->pos;
781     else
782         return -1;
783 }
784
785 static void decoder_abort(Decoder *d, FrameQueue *fq)
786 {
787     packet_queue_abort(d->queue);
788     frame_queue_signal(fq);
789     SDL_WaitThread(d->decoder_tid, NULL);
790     d->decoder_tid = NULL;
791     packet_queue_flush(d->queue);
792 }
793
794 static inline void fill_rectangle(int x, int y, int w, int h)
795 {
796     SDL_Rect rect;
797     rect.x = x;
798     rect.y = y;
799     rect.w = w;
800     rect.h = h;
801     if (w && h)
802         SDL_RenderFillRect(renderer, &rect);
803 }
804
805 static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
806 {
807     Uint32 format;
808     int access, w, h;
809     if (SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
810         void *pixels;
811         int pitch;
812         SDL_DestroyTexture(*texture);
813         if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
814             return -1;
815         if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
816             return -1;
817         if (init_texture) {
818             if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
819                 return -1;
820             memset(pixels, 0, pitch * new_height);
821             SDL_UnlockTexture(*texture);
822         }
823     }
824     return 0;
825 }
826
827 static void calculate_display_rect(SDL_Rect *rect,
828                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
829                                    int pic_width, int pic_height, AVRational pic_sar)
830 {
831     float aspect_ratio;
832     int width, height, x, y;
833
834     if (pic_sar.num == 0)
835         aspect_ratio = 0;
836     else
837         aspect_ratio = av_q2d(pic_sar);
838
839     if (aspect_ratio <= 0.0)
840         aspect_ratio = 1.0;
841     aspect_ratio *= (float)pic_width / (float)pic_height;
842
843     /* XXX: we suppose the screen has a 1.0 pixel ratio */
844     height = scr_height;
845     width = lrint(height * aspect_ratio) & ~1;
846     if (width > scr_width) {
847         width = scr_width;
848         height = lrint(width / aspect_ratio) & ~1;
849     }
850     x = (scr_width - width) / 2;
851     y = (scr_height - height) / 2;
852     rect->x = scr_xleft + x;
853     rect->y = scr_ytop  + y;
854     rect->w = FFMAX(width,  1);
855     rect->h = FFMAX(height, 1);
856 }
857
858 static int upload_texture(SDL_Texture *tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
859     int ret = 0;
860     switch (frame->format) {
861         case AV_PIX_FMT_YUV420P:
862             if (frame->linesize[0] < 0 || frame->linesize[1] < 0 || frame->linesize[2] < 0) {
863                 av_log(NULL, AV_LOG_ERROR, "Negative linesize is not supported for YUV.\n");
864                 return -1;
865             }
866             ret = SDL_UpdateYUVTexture(tex, NULL, frame->data[0], frame->linesize[0],
867                                                   frame->data[1], frame->linesize[1],
868                                                   frame->data[2], frame->linesize[2]);
869             break;
870         case AV_PIX_FMT_BGRA:
871             if (frame->linesize[0] < 0) {
872                 ret = SDL_UpdateTexture(tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
873             } else {
874                 ret = SDL_UpdateTexture(tex, NULL, frame->data[0], frame->linesize[0]);
875             }
876             break;
877         default:
878             /* This should only happen if we are not using avfilter... */
879             *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
880                 frame->width, frame->height, frame->format, frame->width, frame->height,
881                 AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
882             if (*img_convert_ctx != NULL) {
883                 uint8_t *pixels[4];
884                 int pitch[4];
885                 if (!SDL_LockTexture(tex, NULL, (void **)pixels, pitch)) {
886                     sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
887                               0, frame->height, pixels, pitch);
888                     SDL_UnlockTexture(tex);
889                 }
890             } else {
891                 av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
892                 ret = -1;
893             }
894             break;
895     }
896     return ret;
897 }
898
899 static void video_image_display(VideoState *is)
900 {
901     Frame *vp;
902     Frame *sp = NULL;
903     SDL_Rect rect;
904
905     vp = frame_queue_peek_last(&is->pictq);
906     if (is->subtitle_st) {
907         if (frame_queue_nb_remaining(&is->subpq) > 0) {
908             sp = frame_queue_peek(&is->subpq);
909
910             if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
911                 if (!sp->uploaded) {
912                     uint8_t* pixels[4];
913                     int pitch[4];
914                     int i;
915                     if (!sp->width || !sp->height) {
916                         sp->width = vp->width;
917                         sp->height = vp->height;
918                     }
919                     if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
920                         return;
921
922                     for (i = 0; i < sp->sub.num_rects; i++) {
923                         AVSubtitleRect *sub_rect = sp->sub.rects[i];
924
925                         sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
926                         sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
927                         sub_rect->w = av_clip(sub_rect->w, 0, sp->width  - sub_rect->x);
928                         sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
929
930                         is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
931                             sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
932                             sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
933                             0, NULL, NULL, NULL);
934                         if (!is->sub_convert_ctx) {
935                             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
936                             return;
937                         }
938                         if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
939                             sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
940                                       0, sub_rect->h, pixels, pitch);
941                             SDL_UnlockTexture(is->sub_texture);
942                         }
943                     }
944                     sp->uploaded = 1;
945                 }
946             } else
947                 sp = NULL;
948         }
949     }
950
951     calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
952
953     if (!vp->uploaded) {
954         int sdl_pix_fmt = vp->frame->format == AV_PIX_FMT_YUV420P ? SDL_PIXELFORMAT_YV12 : SDL_PIXELFORMAT_ARGB8888;
955         if (realloc_texture(&is->vid_texture, sdl_pix_fmt, vp->frame->width, vp->frame->height, SDL_BLENDMODE_NONE, 0) < 0)
956             return;
957         if (upload_texture(is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
958             return;
959         vp->uploaded = 1;
960         vp->flip_v = vp->frame->linesize[0] < 0;
961     }
962
963     SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
964     if (sp) {
965 #if USE_ONEPASS_SUBTITLE_RENDER
966         SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
967 #else
968         int i;
969         double xratio = (double)rect.w / (double)sp->width;
970         double yratio = (double)rect.h / (double)sp->height;
971         for (i = 0; i < sp->sub.num_rects; i++) {
972             SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
973             SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
974                                .y = rect.y + sub_rect->y * yratio,
975                                .w = sub_rect->w * xratio,
976                                .h = sub_rect->h * yratio};
977             SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
978         }
979 #endif
980     }
981 }
982
983 static inline int compute_mod(int a, int b)
984 {
985     return a < 0 ? a%b + b : a%b;
986 }
987
988 static void video_audio_display(VideoState *s)
989 {
990     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
991     int ch, channels, h, h2;
992     int64_t time_diff;
993     int rdft_bits, nb_freq;
994
995     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
996         ;
997     nb_freq = 1 << (rdft_bits - 1);
998
999     /* compute display index : center on currently output samples */
1000     channels = s->audio_tgt.channels;
1001     nb_display_channels = channels;
1002     if (!s->paused) {
1003         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1004         n = 2 * channels;
1005         delay = s->audio_write_buf_size;
1006         delay /= n;
1007
1008         /* to be more precise, we take into account the time spent since
1009            the last buffer computation */
1010         if (audio_callback_time) {
1011             time_diff = av_gettime_relative() - audio_callback_time;
1012             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1013         }
1014
1015         delay += 2 * data_used;
1016         if (delay < data_used)
1017             delay = data_used;
1018
1019         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1020         if (s->show_mode == SHOW_MODE_WAVES) {
1021             h = INT_MIN;
1022             for (i = 0; i < 1000; i += channels) {
1023                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1024                 int a = s->sample_array[idx];
1025                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1026                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1027                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1028                 int score = a - d;
1029                 if (h < score && (b ^ c) < 0) {
1030                     h = score;
1031                     i_start = idx;
1032                 }
1033             }
1034         }
1035
1036         s->last_i_start = i_start;
1037     } else {
1038         i_start = s->last_i_start;
1039     }
1040
1041     if (s->show_mode == SHOW_MODE_WAVES) {
1042         SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
1043
1044         /* total height for one channel */
1045         h = s->height / nb_display_channels;
1046         /* graph height / 2 */
1047         h2 = (h * 9) / 20;
1048         for (ch = 0; ch < nb_display_channels; ch++) {
1049             i = i_start + ch;
1050             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1051             for (x = 0; x < s->width; x++) {
1052                 y = (s->sample_array[i] * h2) >> 15;
1053                 if (y < 0) {
1054                     y = -y;
1055                     ys = y1 - y;
1056                 } else {
1057                     ys = y1;
1058                 }
1059                 fill_rectangle(s->xleft + x, ys, 1, y);
1060                 i += channels;
1061                 if (i >= SAMPLE_ARRAY_SIZE)
1062                     i -= SAMPLE_ARRAY_SIZE;
1063             }
1064         }
1065
1066         SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
1067
1068         for (ch = 1; ch < nb_display_channels; ch++) {
1069             y = s->ytop + ch * h;
1070             fill_rectangle(s->xleft, y, s->width, 1);
1071         }
1072     } else {
1073         if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
1074             return;
1075
1076         nb_display_channels= FFMIN(nb_display_channels, 2);
1077         if (rdft_bits != s->rdft_bits) {
1078             av_rdft_end(s->rdft);
1079             av_free(s->rdft_data);
1080             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1081             s->rdft_bits = rdft_bits;
1082             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1083         }
1084         if (!s->rdft || !s->rdft_data){
1085             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1086             s->show_mode = SHOW_MODE_WAVES;
1087         } else {
1088             FFTSample *data[2];
1089             SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
1090             uint32_t *pixels;
1091             int pitch;
1092             for (ch = 0; ch < nb_display_channels; ch++) {
1093                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1094                 i = i_start + ch;
1095                 for (x = 0; x < 2 * nb_freq; x++) {
1096                     double w = (x-nb_freq) * (1.0 / nb_freq);
1097                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1098                     i += channels;
1099                     if (i >= SAMPLE_ARRAY_SIZE)
1100                         i -= SAMPLE_ARRAY_SIZE;
1101                 }
1102                 av_rdft_calc(s->rdft, data[ch]);
1103             }
1104             /* Least efficient way to do this, we should of course
1105              * directly access it but it is more than fast enough. */
1106             if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
1107                 pitch >>= 2;
1108                 pixels += pitch * s->height;
1109                 for (y = 0; y < s->height; y++) {
1110                     double w = 1 / sqrt(nb_freq);
1111                     int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
1112                     int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1113                                                         : a;
1114                     a = FFMIN(a, 255);
1115                     b = FFMIN(b, 255);
1116                     pixels -= pitch;
1117                     *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
1118                 }
1119                 SDL_UnlockTexture(s->vis_texture);
1120             }
1121             SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
1122         }
1123         if (!s->paused)
1124             s->xpos++;
1125         if (s->xpos >= s->width)
1126             s->xpos= s->xleft;
1127     }
1128 }
1129
1130 static void stream_component_close(VideoState *is, int stream_index)
1131 {
1132     AVFormatContext *ic = is->ic;
1133     AVCodecParameters *codecpar;
1134
1135     if (stream_index < 0 || stream_index >= ic->nb_streams)
1136         return;
1137     codecpar = ic->streams[stream_index]->codecpar;
1138
1139     switch (codecpar->codec_type) {
1140     case AVMEDIA_TYPE_AUDIO:
1141         decoder_abort(&is->auddec, &is->sampq);
1142         SDL_CloseAudio();
1143         decoder_destroy(&is->auddec);
1144         swr_free(&is->swr_ctx);
1145         av_freep(&is->audio_buf1);
1146         is->audio_buf1_size = 0;
1147         is->audio_buf = NULL;
1148
1149         if (is->rdft) {
1150             av_rdft_end(is->rdft);
1151             av_freep(&is->rdft_data);
1152             is->rdft = NULL;
1153             is->rdft_bits = 0;
1154         }
1155         break;
1156     case AVMEDIA_TYPE_VIDEO:
1157         decoder_abort(&is->viddec, &is->pictq);
1158         decoder_destroy(&is->viddec);
1159         break;
1160     case AVMEDIA_TYPE_SUBTITLE:
1161         decoder_abort(&is->subdec, &is->subpq);
1162         decoder_destroy(&is->subdec);
1163         break;
1164     default:
1165         break;
1166     }
1167
1168     ic->streams[stream_index]->discard = AVDISCARD_ALL;
1169     switch (codecpar->codec_type) {
1170     case AVMEDIA_TYPE_AUDIO:
1171         is->audio_st = NULL;
1172         is->audio_stream = -1;
1173         break;
1174     case AVMEDIA_TYPE_VIDEO:
1175         is->video_st = NULL;
1176         is->video_stream = -1;
1177         break;
1178     case AVMEDIA_TYPE_SUBTITLE:
1179         is->subtitle_st = NULL;
1180         is->subtitle_stream = -1;
1181         break;
1182     default:
1183         break;
1184     }
1185 }
1186
1187 static void stream_close(VideoState *is)
1188 {
1189     /* XXX: use a special url_shutdown call to abort parse cleanly */
1190     is->abort_request = 1;
1191     SDL_WaitThread(is->read_tid, NULL);
1192
1193     /* close each stream */
1194     if (is->audio_stream >= 0)
1195         stream_component_close(is, is->audio_stream);
1196     if (is->video_stream >= 0)
1197         stream_component_close(is, is->video_stream);
1198     if (is->subtitle_stream >= 0)
1199         stream_component_close(is, is->subtitle_stream);
1200
1201     avformat_close_input(&is->ic);
1202
1203     packet_queue_destroy(&is->videoq);
1204     packet_queue_destroy(&is->audioq);
1205     packet_queue_destroy(&is->subtitleq);
1206
1207     /* free all pictures */
1208     frame_queue_destory(&is->pictq);
1209     frame_queue_destory(&is->sampq);
1210     frame_queue_destory(&is->subpq);
1211     SDL_DestroyCond(is->continue_read_thread);
1212     sws_freeContext(is->img_convert_ctx);
1213     sws_freeContext(is->sub_convert_ctx);
1214     av_free(is->filename);
1215     if (is->vis_texture)
1216         SDL_DestroyTexture(is->vis_texture);
1217     if (is->vid_texture)
1218         SDL_DestroyTexture(is->vid_texture);
1219     if (is->sub_texture)
1220         SDL_DestroyTexture(is->sub_texture);
1221     av_free(is);
1222 }
1223
1224 static void do_exit(VideoState *is)
1225 {
1226     if (is) {
1227         stream_close(is);
1228     }
1229     if (renderer)
1230         SDL_DestroyRenderer(renderer);
1231     if (window)
1232         SDL_DestroyWindow(window);
1233     av_lockmgr_register(NULL);
1234     uninit_opts();
1235 #if CONFIG_AVFILTER
1236     av_freep(&vfilters_list);
1237 #endif
1238     avformat_network_deinit();
1239     if (show_status)
1240         printf("\n");
1241     SDL_Quit();
1242     av_log(NULL, AV_LOG_QUIET, "%s", "");
1243     exit(0);
1244 }
1245
1246 static void sigterm_handler(int sig)
1247 {
1248     exit(123);
1249 }
1250
1251 static void set_default_window_size(int width, int height, AVRational sar)
1252 {
1253     SDL_Rect rect;
1254     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1255     default_width  = rect.w;
1256     default_height = rect.h;
1257 }
1258
1259 static int video_open(VideoState *is)
1260 {
1261     int w,h;
1262
1263     if (screen_width) {
1264         w = screen_width;
1265         h = screen_height;
1266     } else {
1267         w = default_width;
1268         h = default_height;
1269     }
1270
1271     if (!window) {
1272         int flags = SDL_WINDOW_SHOWN;
1273         if (!window_title)
1274             window_title = input_filename;
1275         if (is_full_screen)
1276             flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
1277         if (borderless)
1278             flags |= SDL_WINDOW_BORDERLESS;
1279         else
1280             flags |= SDL_WINDOW_RESIZABLE;
1281         window = SDL_CreateWindow(window_title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, flags);
1282         SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
1283         if (window) {
1284             SDL_RendererInfo info;
1285             renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
1286             if (!renderer) {
1287                 av_log(NULL, AV_LOG_WARNING, "Failed to initialize a hardware accelerated renderer: %s\n", SDL_GetError());
1288                 renderer = SDL_CreateRenderer(window, -1, 0);
1289             }
1290             if (renderer) {
1291                 if (!SDL_GetRendererInfo(renderer, &info))
1292                     av_log(NULL, AV_LOG_VERBOSE, "Initialized %s renderer.\n", info.name);
1293             }
1294         }
1295     } else {
1296         SDL_SetWindowSize(window, w, h);
1297     }
1298
1299     if (!window || !renderer) {
1300         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1301         do_exit(is);
1302     }
1303
1304     is->width  = w;
1305     is->height = h;
1306
1307     return 0;
1308 }
1309
1310 /* display the current picture, if any */
1311 static void video_display(VideoState *is)
1312 {
1313     if (!window)
1314         video_open(is);
1315
1316     SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
1317     SDL_RenderClear(renderer);
1318     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1319         video_audio_display(is);
1320     else if (is->video_st)
1321         video_image_display(is);
1322     SDL_RenderPresent(renderer);
1323 }
1324
1325 static double get_clock(Clock *c)
1326 {
1327     if (*c->queue_serial != c->serial)
1328         return NAN;
1329     if (c->paused) {
1330         return c->pts;
1331     } else {
1332         double time = av_gettime_relative() / 1000000.0;
1333         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1334     }
1335 }
1336
1337 static void set_clock_at(Clock *c, double pts, int serial, double time)
1338 {
1339     c->pts = pts;
1340     c->last_updated = time;
1341     c->pts_drift = c->pts - time;
1342     c->serial = serial;
1343 }
1344
1345 static void set_clock(Clock *c, double pts, int serial)
1346 {
1347     double time = av_gettime_relative() / 1000000.0;
1348     set_clock_at(c, pts, serial, time);
1349 }
1350
1351 static void set_clock_speed(Clock *c, double speed)
1352 {
1353     set_clock(c, get_clock(c), c->serial);
1354     c->speed = speed;
1355 }
1356
1357 static void init_clock(Clock *c, int *queue_serial)
1358 {
1359     c->speed = 1.0;
1360     c->paused = 0;
1361     c->queue_serial = queue_serial;
1362     set_clock(c, NAN, -1);
1363 }
1364
1365 static void sync_clock_to_slave(Clock *c, Clock *slave)
1366 {
1367     double clock = get_clock(c);
1368     double slave_clock = get_clock(slave);
1369     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1370         set_clock(c, slave_clock, slave->serial);
1371 }
1372
1373 static int get_master_sync_type(VideoState *is) {
1374     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1375         if (is->video_st)
1376             return AV_SYNC_VIDEO_MASTER;
1377         else
1378             return AV_SYNC_AUDIO_MASTER;
1379     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1380         if (is->audio_st)
1381             return AV_SYNC_AUDIO_MASTER;
1382         else
1383             return AV_SYNC_EXTERNAL_CLOCK;
1384     } else {
1385         return AV_SYNC_EXTERNAL_CLOCK;
1386     }
1387 }
1388
1389 /* get the current master clock value */
1390 static double get_master_clock(VideoState *is)
1391 {
1392     double val;
1393
1394     switch (get_master_sync_type(is)) {
1395         case AV_SYNC_VIDEO_MASTER:
1396             val = get_clock(&is->vidclk);
1397             break;
1398         case AV_SYNC_AUDIO_MASTER:
1399             val = get_clock(&is->audclk);
1400             break;
1401         default:
1402             val = get_clock(&is->extclk);
1403             break;
1404     }
1405     return val;
1406 }
1407
1408 static void check_external_clock_speed(VideoState *is) {
1409    if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
1410        is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
1411        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1412    } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
1413               (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
1414        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1415    } else {
1416        double speed = is->extclk.speed;
1417        if (speed != 1.0)
1418            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1419    }
1420 }
1421
1422 /* seek in the stream */
1423 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1424 {
1425     if (!is->seek_req) {
1426         is->seek_pos = pos;
1427         is->seek_rel = rel;
1428         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1429         if (seek_by_bytes)
1430             is->seek_flags |= AVSEEK_FLAG_BYTE;
1431         is->seek_req = 1;
1432         SDL_CondSignal(is->continue_read_thread);
1433     }
1434 }
1435
1436 /* pause or resume the video */
1437 static void stream_toggle_pause(VideoState *is)
1438 {
1439     if (is->paused) {
1440         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1441         if (is->read_pause_return != AVERROR(ENOSYS)) {
1442             is->vidclk.paused = 0;
1443         }
1444         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1445     }
1446     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1447     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1448 }
1449
1450 static void toggle_pause(VideoState *is)
1451 {
1452     stream_toggle_pause(is);
1453     is->step = 0;
1454 }
1455
1456 static void toggle_mute(VideoState *is)
1457 {
1458     is->muted = !is->muted;
1459 }
1460
1461 static void update_volume(VideoState *is, int sign, double step)
1462 {
1463     double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
1464     int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
1465     is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
1466 }
1467
1468 static void step_to_next_frame(VideoState *is)
1469 {
1470     /* if the stream is paused unpause it, then step */
1471     if (is->paused)
1472         stream_toggle_pause(is);
1473     is->step = 1;
1474 }
1475
1476 static double compute_target_delay(double delay, VideoState *is)
1477 {
1478     double sync_threshold, diff = 0;
1479
1480     /* update delay to follow master synchronisation source */
1481     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1482         /* if video is slave, we try to correct big delays by
1483            duplicating or deleting a frame */
1484         diff = get_clock(&is->vidclk) - get_master_clock(is);
1485
1486         /* skip or repeat frame. We take into account the
1487            delay to compute the threshold. I still don't know
1488            if it is the best guess */
1489         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1490         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1491             if (diff <= -sync_threshold)
1492                 delay = FFMAX(0, delay + diff);
1493             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1494                 delay = delay + diff;
1495             else if (diff >= sync_threshold)
1496                 delay = 2 * delay;
1497         }
1498     }
1499
1500     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1501             delay, -diff);
1502
1503     return delay;
1504 }
1505
1506 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1507     if (vp->serial == nextvp->serial) {
1508         double duration = nextvp->pts - vp->pts;
1509         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1510             return vp->duration;
1511         else
1512             return duration;
1513     } else {
1514         return 0.0;
1515     }
1516 }
1517
1518 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1519     /* update current video pts */
1520     set_clock(&is->vidclk, pts, serial);
1521     sync_clock_to_slave(&is->extclk, &is->vidclk);
1522 }
1523
1524 /* called to display each frame */
1525 static void video_refresh(void *opaque, double *remaining_time)
1526 {
1527     VideoState *is = opaque;
1528     double time;
1529
1530     Frame *sp, *sp2;
1531
1532     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1533         check_external_clock_speed(is);
1534
1535     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1536         time = av_gettime_relative() / 1000000.0;
1537         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1538             video_display(is);
1539             is->last_vis_time = time;
1540         }
1541         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1542     }
1543
1544     if (is->video_st) {
1545 retry:
1546         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1547             // nothing to do, no picture to display in the queue
1548         } else {
1549             double last_duration, duration, delay;
1550             Frame *vp, *lastvp;
1551
1552             /* dequeue the picture */
1553             lastvp = frame_queue_peek_last(&is->pictq);
1554             vp = frame_queue_peek(&is->pictq);
1555
1556             if (vp->serial != is->videoq.serial) {
1557                 frame_queue_next(&is->pictq);
1558                 goto retry;
1559             }
1560
1561             if (lastvp->serial != vp->serial)
1562                 is->frame_timer = av_gettime_relative() / 1000000.0;
1563
1564             if (is->paused)
1565                 goto display;
1566
1567             /* compute nominal last_duration */
1568             last_duration = vp_duration(is, lastvp, vp);
1569             delay = compute_target_delay(last_duration, is);
1570
1571             time= av_gettime_relative()/1000000.0;
1572             if (time < is->frame_timer + delay) {
1573                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1574                 goto display;
1575             }
1576
1577             is->frame_timer += delay;
1578             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1579                 is->frame_timer = time;
1580
1581             SDL_LockMutex(is->pictq.mutex);
1582             if (!isnan(vp->pts))
1583                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1584             SDL_UnlockMutex(is->pictq.mutex);
1585
1586             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1587                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1588                 duration = vp_duration(is, vp, nextvp);
1589                 if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1590                     is->frame_drops_late++;
1591                     frame_queue_next(&is->pictq);
1592                     goto retry;
1593                 }
1594             }
1595
1596             if (is->subtitle_st) {
1597                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1598                         sp = frame_queue_peek(&is->subpq);
1599
1600                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1601                             sp2 = frame_queue_peek_next(&is->subpq);
1602                         else
1603                             sp2 = NULL;
1604
1605                         if (sp->serial != is->subtitleq.serial
1606                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1607                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1608                         {
1609                             if (sp->uploaded) {
1610                                 int i;
1611                                 for (i = 0; i < sp->sub.num_rects; i++) {
1612                                     AVSubtitleRect *sub_rect = sp->sub.rects[i];
1613                                     uint8_t *pixels;
1614                                     int pitch, j;
1615
1616                                     if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
1617                                         for (j = 0; j < sub_rect->h; j++, pixels += pitch)
1618                                             memset(pixels, 0, sub_rect->w << 2);
1619                                         SDL_UnlockTexture(is->sub_texture);
1620                                     }
1621                                 }
1622                             }
1623                             frame_queue_next(&is->subpq);
1624                         } else {
1625                             break;
1626                         }
1627                     }
1628             }
1629
1630             frame_queue_next(&is->pictq);
1631             is->force_refresh = 1;
1632
1633             if (is->step && !is->paused)
1634                 stream_toggle_pause(is);
1635         }
1636 display:
1637         /* display picture */
1638         if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
1639             video_display(is);
1640     }
1641     is->force_refresh = 0;
1642     if (show_status) {
1643         static int64_t last_time;
1644         int64_t cur_time;
1645         int aqsize, vqsize, sqsize;
1646         double av_diff;
1647
1648         cur_time = av_gettime_relative();
1649         if (!last_time || (cur_time - last_time) >= 30000) {
1650             aqsize = 0;
1651             vqsize = 0;
1652             sqsize = 0;
1653             if (is->audio_st)
1654                 aqsize = is->audioq.size;
1655             if (is->video_st)
1656                 vqsize = is->videoq.size;
1657             if (is->subtitle_st)
1658                 sqsize = is->subtitleq.size;
1659             av_diff = 0;
1660             if (is->audio_st && is->video_st)
1661                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1662             else if (is->video_st)
1663                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1664             else if (is->audio_st)
1665                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1666             av_log(NULL, AV_LOG_INFO,
1667                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1668                    get_master_clock(is),
1669                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1670                    av_diff,
1671                    is->frame_drops_early + is->frame_drops_late,
1672                    aqsize / 1024,
1673                    vqsize / 1024,
1674                    sqsize,
1675                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
1676                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
1677             fflush(stdout);
1678             last_time = cur_time;
1679         }
1680     }
1681 }
1682
1683 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1684 {
1685     Frame *vp;
1686
1687 #if defined(DEBUG_SYNC)
1688     printf("frame_type=%c pts=%0.3f\n",
1689            av_get_picture_type_char(src_frame->pict_type), pts);
1690 #endif
1691
1692     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1693         return -1;
1694
1695     vp->sar = src_frame->sample_aspect_ratio;
1696     vp->uploaded = 0;
1697
1698     vp->width = src_frame->width;
1699     vp->height = src_frame->height;
1700     vp->format = src_frame->format;
1701
1702     vp->pts = pts;
1703     vp->duration = duration;
1704     vp->pos = pos;
1705     vp->serial = serial;
1706
1707     set_default_window_size(vp->width, vp->height, vp->sar);
1708
1709     av_frame_move_ref(vp->frame, src_frame);
1710     frame_queue_push(&is->pictq);
1711     return 0;
1712 }
1713
1714 static int get_video_frame(VideoState *is, AVFrame *frame)
1715 {
1716     int got_picture;
1717
1718     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1719         return -1;
1720
1721     if (got_picture) {
1722         double dpts = NAN;
1723
1724         if (frame->pts != AV_NOPTS_VALUE)
1725             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1726
1727         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1728
1729         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1730             if (frame->pts != AV_NOPTS_VALUE) {
1731                 double diff = dpts - get_master_clock(is);
1732                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1733                     diff - is->frame_last_filter_delay < 0 &&
1734                     is->viddec.pkt_serial == is->vidclk.serial &&
1735                     is->videoq.nb_packets) {
1736                     is->frame_drops_early++;
1737                     av_frame_unref(frame);
1738                     got_picture = 0;
1739                 }
1740             }
1741         }
1742     }
1743
1744     return got_picture;
1745 }
1746
1747 #if CONFIG_AVFILTER
1748 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1749                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1750 {
1751     int ret, i;
1752     int nb_filters = graph->nb_filters;
1753     AVFilterInOut *outputs = NULL, *inputs = NULL;
1754
1755     if (filtergraph) {
1756         outputs = avfilter_inout_alloc();
1757         inputs  = avfilter_inout_alloc();
1758         if (!outputs || !inputs) {
1759             ret = AVERROR(ENOMEM);
1760             goto fail;
1761         }
1762
1763         outputs->name       = av_strdup("in");
1764         outputs->filter_ctx = source_ctx;
1765         outputs->pad_idx    = 0;
1766         outputs->next       = NULL;
1767
1768         inputs->name        = av_strdup("out");
1769         inputs->filter_ctx  = sink_ctx;
1770         inputs->pad_idx     = 0;
1771         inputs->next        = NULL;
1772
1773         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1774             goto fail;
1775     } else {
1776         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1777             goto fail;
1778     }
1779
1780     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1781     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1782         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1783
1784     ret = avfilter_graph_config(graph, NULL);
1785 fail:
1786     avfilter_inout_free(&outputs);
1787     avfilter_inout_free(&inputs);
1788     return ret;
1789 }
1790
1791 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1792 {
1793     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE };
1794     char sws_flags_str[512] = "";
1795     char buffersrc_args[256];
1796     int ret;
1797     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1798     AVCodecParameters *codecpar = is->video_st->codecpar;
1799     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1800     AVDictionaryEntry *e = NULL;
1801
1802     while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
1803         if (!strcmp(e->key, "sws_flags")) {
1804             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
1805         } else
1806             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
1807     }
1808     if (strlen(sws_flags_str))
1809         sws_flags_str[strlen(sws_flags_str)-1] = '\0';
1810
1811     graph->scale_sws_opts = av_strdup(sws_flags_str);
1812
1813     snprintf(buffersrc_args, sizeof(buffersrc_args),
1814              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1815              frame->width, frame->height, frame->format,
1816              is->video_st->time_base.num, is->video_st->time_base.den,
1817              codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
1818     if (fr.num && fr.den)
1819         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1820
1821     if ((ret = avfilter_graph_create_filter(&filt_src,
1822                                             avfilter_get_by_name("buffer"),
1823                                             "ffplay_buffer", buffersrc_args, NULL,
1824                                             graph)) < 0)
1825         goto fail;
1826
1827     ret = avfilter_graph_create_filter(&filt_out,
1828                                        avfilter_get_by_name("buffersink"),
1829                                        "ffplay_buffersink", NULL, NULL, graph);
1830     if (ret < 0)
1831         goto fail;
1832
1833     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1834         goto fail;
1835
1836     last_filter = filt_out;
1837
1838 /* Note: this macro adds a filter before the lastly added filter, so the
1839  * processing order of the filters is in reverse */
1840 #define INSERT_FILT(name, arg) do {                                          \
1841     AVFilterContext *filt_ctx;                                               \
1842                                                                              \
1843     ret = avfilter_graph_create_filter(&filt_ctx,                            \
1844                                        avfilter_get_by_name(name),           \
1845                                        "ffplay_" name, arg, NULL, graph);    \
1846     if (ret < 0)                                                             \
1847         goto fail;                                                           \
1848                                                                              \
1849     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
1850     if (ret < 0)                                                             \
1851         goto fail;                                                           \
1852                                                                              \
1853     last_filter = filt_ctx;                                                  \
1854 } while (0)
1855
1856     if (autorotate) {
1857         double theta  = get_rotation(is->video_st);
1858
1859         if (fabs(theta - 90) < 1.0) {
1860             INSERT_FILT("transpose", "clock");
1861         } else if (fabs(theta - 180) < 1.0) {
1862             INSERT_FILT("hflip", NULL);
1863             INSERT_FILT("vflip", NULL);
1864         } else if (fabs(theta - 270) < 1.0) {
1865             INSERT_FILT("transpose", "cclock");
1866         } else if (fabs(theta) > 1.0) {
1867             char rotate_buf[64];
1868             snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
1869             INSERT_FILT("rotate", rotate_buf);
1870         }
1871     }
1872
1873     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1874         goto fail;
1875
1876     is->in_video_filter  = filt_src;
1877     is->out_video_filter = filt_out;
1878
1879 fail:
1880     return ret;
1881 }
1882
1883 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1884 {
1885     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1886     int sample_rates[2] = { 0, -1 };
1887     int64_t channel_layouts[2] = { 0, -1 };
1888     int channels[2] = { 0, -1 };
1889     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1890     char aresample_swr_opts[512] = "";
1891     AVDictionaryEntry *e = NULL;
1892     char asrc_args[256];
1893     int ret;
1894
1895     avfilter_graph_free(&is->agraph);
1896     if (!(is->agraph = avfilter_graph_alloc()))
1897         return AVERROR(ENOMEM);
1898
1899     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1900         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1901     if (strlen(aresample_swr_opts))
1902         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1903     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1904
1905     ret = snprintf(asrc_args, sizeof(asrc_args),
1906                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1907                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1908                    is->audio_filter_src.channels,
1909                    1, is->audio_filter_src.freq);
1910     if (is->audio_filter_src.channel_layout)
1911         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1912                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1913
1914     ret = avfilter_graph_create_filter(&filt_asrc,
1915                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1916                                        asrc_args, NULL, is->agraph);
1917     if (ret < 0)
1918         goto end;
1919
1920
1921     ret = avfilter_graph_create_filter(&filt_asink,
1922                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1923                                        NULL, NULL, is->agraph);
1924     if (ret < 0)
1925         goto end;
1926
1927     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1928         goto end;
1929     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1930         goto end;
1931
1932     if (force_output_format) {
1933         channel_layouts[0] = is->audio_tgt.channel_layout;
1934         channels       [0] = is->audio_tgt.channels;
1935         sample_rates   [0] = is->audio_tgt.freq;
1936         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1937             goto end;
1938         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1939             goto end;
1940         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1941             goto end;
1942         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1943             goto end;
1944     }
1945
1946
1947     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
1948         goto end;
1949
1950     is->in_audio_filter  = filt_asrc;
1951     is->out_audio_filter = filt_asink;
1952
1953 end:
1954     if (ret < 0)
1955         avfilter_graph_free(&is->agraph);
1956     return ret;
1957 }
1958 #endif  /* CONFIG_AVFILTER */
1959
1960 static int audio_thread(void *arg)
1961 {
1962     VideoState *is = arg;
1963     AVFrame *frame = av_frame_alloc();
1964     Frame *af;
1965 #if CONFIG_AVFILTER
1966     int last_serial = -1;
1967     int64_t dec_channel_layout;
1968     int reconfigure;
1969 #endif
1970     int got_frame = 0;
1971     AVRational tb;
1972     int ret = 0;
1973
1974     if (!frame)
1975         return AVERROR(ENOMEM);
1976
1977     do {
1978         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
1979             goto the_end;
1980
1981         if (got_frame) {
1982                 tb = (AVRational){1, frame->sample_rate};
1983
1984 #if CONFIG_AVFILTER
1985                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
1986
1987                 reconfigure =
1988                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
1989                                    frame->format, frame->channels)    ||
1990                     is->audio_filter_src.channel_layout != dec_channel_layout ||
1991                     is->audio_filter_src.freq           != frame->sample_rate ||
1992                     is->auddec.pkt_serial               != last_serial;
1993
1994                 if (reconfigure) {
1995                     char buf1[1024], buf2[1024];
1996                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
1997                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
1998                     av_log(NULL, AV_LOG_DEBUG,
1999                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2000                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2001                            frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2002
2003                     is->audio_filter_src.fmt            = frame->format;
2004                     is->audio_filter_src.channels       = frame->channels;
2005                     is->audio_filter_src.channel_layout = dec_channel_layout;
2006                     is->audio_filter_src.freq           = frame->sample_rate;
2007                     last_serial                         = is->auddec.pkt_serial;
2008
2009                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2010                         goto the_end;
2011                 }
2012
2013             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2014                 goto the_end;
2015
2016             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2017                 tb = av_buffersink_get_time_base(is->out_audio_filter);
2018 #endif
2019                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2020                     goto the_end;
2021
2022                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2023                 af->pos = frame->pkt_pos;
2024                 af->serial = is->auddec.pkt_serial;
2025                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2026
2027                 av_frame_move_ref(af->frame, frame);
2028                 frame_queue_push(&is->sampq);
2029
2030 #if CONFIG_AVFILTER
2031                 if (is->audioq.serial != is->auddec.pkt_serial)
2032                     break;
2033             }
2034             if (ret == AVERROR_EOF)
2035                 is->auddec.finished = is->auddec.pkt_serial;
2036 #endif
2037         }
2038     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2039  the_end:
2040 #if CONFIG_AVFILTER
2041     avfilter_graph_free(&is->agraph);
2042 #endif
2043     av_frame_free(&frame);
2044     return ret;
2045 }
2046
2047 static int decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2048 {
2049     packet_queue_start(d->queue);
2050     d->decoder_tid = SDL_CreateThread(fn, "decoder", arg);
2051     if (!d->decoder_tid) {
2052         av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2053         return AVERROR(ENOMEM);
2054     }
2055     return 0;
2056 }
2057
2058 static int video_thread(void *arg)
2059 {
2060     VideoState *is = arg;
2061     AVFrame *frame = av_frame_alloc();
2062     double pts;
2063     double duration;
2064     int ret;
2065     AVRational tb = is->video_st->time_base;
2066     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2067
2068 #if CONFIG_AVFILTER
2069     AVFilterGraph *graph = avfilter_graph_alloc();
2070     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2071     int last_w = 0;
2072     int last_h = 0;
2073     enum AVPixelFormat last_format = -2;
2074     int last_serial = -1;
2075     int last_vfilter_idx = 0;
2076     if (!graph) {
2077         av_frame_free(&frame);
2078         return AVERROR(ENOMEM);
2079     }
2080
2081 #endif
2082
2083     if (!frame) {
2084 #if CONFIG_AVFILTER
2085         avfilter_graph_free(&graph);
2086 #endif
2087         return AVERROR(ENOMEM);
2088     }
2089
2090     for (;;) {
2091         ret = get_video_frame(is, frame);
2092         if (ret < 0)
2093             goto the_end;
2094         if (!ret)
2095             continue;
2096
2097 #if CONFIG_AVFILTER
2098         if (   last_w != frame->width
2099             || last_h != frame->height
2100             || last_format != frame->format
2101             || last_serial != is->viddec.pkt_serial
2102             || last_vfilter_idx != is->vfilter_idx) {
2103             av_log(NULL, AV_LOG_DEBUG,
2104                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2105                    last_w, last_h,
2106                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2107                    frame->width, frame->height,
2108                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2109             avfilter_graph_free(&graph);
2110             graph = avfilter_graph_alloc();
2111             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2112                 SDL_Event event;
2113                 event.type = FF_QUIT_EVENT;
2114                 event.user.data1 = is;
2115                 SDL_PushEvent(&event);
2116                 goto the_end;
2117             }
2118             filt_in  = is->in_video_filter;
2119             filt_out = is->out_video_filter;
2120             last_w = frame->width;
2121             last_h = frame->height;
2122             last_format = frame->format;
2123             last_serial = is->viddec.pkt_serial;
2124             last_vfilter_idx = is->vfilter_idx;
2125             frame_rate = av_buffersink_get_frame_rate(filt_out);
2126         }
2127
2128         ret = av_buffersrc_add_frame(filt_in, frame);
2129         if (ret < 0)
2130             goto the_end;
2131
2132         while (ret >= 0) {
2133             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2134
2135             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2136             if (ret < 0) {
2137                 if (ret == AVERROR_EOF)
2138                     is->viddec.finished = is->viddec.pkt_serial;
2139                 ret = 0;
2140                 break;
2141             }
2142
2143             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2144             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2145                 is->frame_last_filter_delay = 0;
2146             tb = av_buffersink_get_time_base(filt_out);
2147 #endif
2148             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2149             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2150             ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
2151             av_frame_unref(frame);
2152 #if CONFIG_AVFILTER
2153         }
2154 #endif
2155
2156         if (ret < 0)
2157             goto the_end;
2158     }
2159  the_end:
2160 #if CONFIG_AVFILTER
2161     avfilter_graph_free(&graph);
2162 #endif
2163     av_frame_free(&frame);
2164     return 0;
2165 }
2166
2167 static int subtitle_thread(void *arg)
2168 {
2169     VideoState *is = arg;
2170     Frame *sp;
2171     int got_subtitle;
2172     double pts;
2173
2174     for (;;) {
2175         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2176             return 0;
2177
2178         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2179             break;
2180
2181         pts = 0;
2182
2183         if (got_subtitle && sp->sub.format == 0) {
2184             if (sp->sub.pts != AV_NOPTS_VALUE)
2185                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2186             sp->pts = pts;
2187             sp->serial = is->subdec.pkt_serial;
2188             sp->width = is->subdec.avctx->width;
2189             sp->height = is->subdec.avctx->height;
2190             sp->uploaded = 0;
2191
2192             /* now we can update the picture count */
2193             frame_queue_push(&is->subpq);
2194         } else if (got_subtitle) {
2195             avsubtitle_free(&sp->sub);
2196         }
2197     }
2198     return 0;
2199 }
2200
2201 /* copy samples for viewing in editor window */
2202 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2203 {
2204     int size, len;
2205
2206     size = samples_size / sizeof(short);
2207     while (size > 0) {
2208         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2209         if (len > size)
2210             len = size;
2211         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2212         samples += len;
2213         is->sample_array_index += len;
2214         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2215             is->sample_array_index = 0;
2216         size -= len;
2217     }
2218 }
2219
2220 /* return the wanted number of samples to get better sync if sync_type is video
2221  * or external master clock */
2222 static int synchronize_audio(VideoState *is, int nb_samples)
2223 {
2224     int wanted_nb_samples = nb_samples;
2225
2226     /* if not master, then we try to remove or add samples to correct the clock */
2227     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2228         double diff, avg_diff;
2229         int min_nb_samples, max_nb_samples;
2230
2231         diff = get_clock(&is->audclk) - get_master_clock(is);
2232
2233         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2234             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2235             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2236                 /* not enough measures to have a correct estimate */
2237                 is->audio_diff_avg_count++;
2238             } else {
2239                 /* estimate the A-V difference */
2240                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2241
2242                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2243                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2244                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2245                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2246                     wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2247                 }
2248                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2249                         diff, avg_diff, wanted_nb_samples - nb_samples,
2250                         is->audio_clock, is->audio_diff_threshold);
2251             }
2252         } else {
2253             /* too big difference : may be initial PTS errors, so
2254                reset A-V filter */
2255             is->audio_diff_avg_count = 0;
2256             is->audio_diff_cum       = 0;
2257         }
2258     }
2259
2260     return wanted_nb_samples;
2261 }
2262
2263 /**
2264  * Decode one audio frame and return its uncompressed size.
2265  *
2266  * The processed audio frame is decoded, converted if required, and
2267  * stored in is->audio_buf, with size in bytes given by the return
2268  * value.
2269  */
2270 static int audio_decode_frame(VideoState *is)
2271 {
2272     int data_size, resampled_data_size;
2273     int64_t dec_channel_layout;
2274     av_unused double audio_clock0;
2275     int wanted_nb_samples;
2276     Frame *af;
2277
2278     if (is->paused)
2279         return -1;
2280
2281     do {
2282 #if defined(_WIN32)
2283         while (frame_queue_nb_remaining(&is->sampq) == 0) {
2284             if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2285                 return -1;
2286             av_usleep (1000);
2287         }
2288 #endif
2289         if (!(af = frame_queue_peek_readable(&is->sampq)))
2290             return -1;
2291         frame_queue_next(&is->sampq);
2292     } while (af->serial != is->audioq.serial);
2293
2294     data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
2295                                            af->frame->nb_samples,
2296                                            af->frame->format, 1);
2297
2298     dec_channel_layout =
2299         (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2300         af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
2301     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2302
2303     if (af->frame->format        != is->audio_src.fmt            ||
2304         dec_channel_layout       != is->audio_src.channel_layout ||
2305         af->frame->sample_rate   != is->audio_src.freq           ||
2306         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2307         swr_free(&is->swr_ctx);
2308         is->swr_ctx = swr_alloc_set_opts(NULL,
2309                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2310                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2311                                          0, NULL);
2312         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2313             av_log(NULL, AV_LOG_ERROR,
2314                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2315                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
2316                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2317             swr_free(&is->swr_ctx);
2318             return -1;
2319         }
2320         is->audio_src.channel_layout = dec_channel_layout;
2321         is->audio_src.channels       = af->frame->channels;
2322         is->audio_src.freq = af->frame->sample_rate;
2323         is->audio_src.fmt = af->frame->format;
2324     }
2325
2326     if (is->swr_ctx) {
2327         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2328         uint8_t **out = &is->audio_buf1;
2329         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2330         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2331         int len2;
2332         if (out_size < 0) {
2333             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2334             return -1;
2335         }
2336         if (wanted_nb_samples != af->frame->nb_samples) {
2337             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2338                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2339                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2340                 return -1;
2341             }
2342         }
2343         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2344         if (!is->audio_buf1)
2345             return AVERROR(ENOMEM);
2346         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2347         if (len2 < 0) {
2348             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2349             return -1;
2350         }
2351         if (len2 == out_count) {
2352             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2353             if (swr_init(is->swr_ctx) < 0)
2354                 swr_free(&is->swr_ctx);
2355         }
2356         is->audio_buf = is->audio_buf1;
2357         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2358     } else {
2359         is->audio_buf = af->frame->data[0];
2360         resampled_data_size = data_size;
2361     }
2362
2363     audio_clock0 = is->audio_clock;
2364     /* update the audio clock with the pts */
2365     if (!isnan(af->pts))
2366         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2367     else
2368         is->audio_clock = NAN;
2369     is->audio_clock_serial = af->serial;
2370 #ifdef DEBUG
2371     {
2372         static double last_clock;
2373         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2374                is->audio_clock - last_clock,
2375                is->audio_clock, audio_clock0);
2376         last_clock = is->audio_clock;
2377     }
2378 #endif
2379     return resampled_data_size;
2380 }
2381
2382 /* prepare a new audio buffer */
2383 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2384 {
2385     VideoState *is = opaque;
2386     int audio_size, len1;
2387
2388     audio_callback_time = av_gettime_relative();
2389
2390     while (len > 0) {
2391         if (is->audio_buf_index >= is->audio_buf_size) {
2392            audio_size = audio_decode_frame(is);
2393            if (audio_size < 0) {
2394                 /* if error, just output silence */
2395                is->audio_buf = NULL;
2396                is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2397            } else {
2398                if (is->show_mode != SHOW_MODE_VIDEO)
2399                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2400                is->audio_buf_size = audio_size;
2401            }
2402            is->audio_buf_index = 0;
2403         }
2404         len1 = is->audio_buf_size - is->audio_buf_index;
2405         if (len1 > len)
2406             len1 = len;
2407         if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
2408             memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2409         else {
2410             memset(stream, 0, len1);
2411             if (!is->muted && is->audio_buf)
2412                 SDL_MixAudio(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1, is->audio_volume);
2413         }
2414         len -= len1;
2415         stream += len1;
2416         is->audio_buf_index += len1;
2417     }
2418     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2419     /* Let's assume the audio driver that is used by SDL has two periods. */
2420     if (!isnan(is->audio_clock)) {
2421         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2422         sync_clock_to_slave(&is->extclk, &is->audclk);
2423     }
2424 }
2425
2426 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2427 {
2428     SDL_AudioSpec wanted_spec, spec;
2429     const char *env;
2430     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2431     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2432     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2433
2434     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2435     if (env) {
2436         wanted_nb_channels = atoi(env);
2437         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2438     }
2439     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2440         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2441         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2442     }
2443     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2444     wanted_spec.channels = wanted_nb_channels;
2445     wanted_spec.freq = wanted_sample_rate;
2446     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2447         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2448         return -1;
2449     }
2450     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2451         next_sample_rate_idx--;
2452     wanted_spec.format = AUDIO_S16SYS;
2453     wanted_spec.silence = 0;
2454     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2455     wanted_spec.callback = sdl_audio_callback;
2456     wanted_spec.userdata = opaque;
2457     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2458         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2459                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2460         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2461         if (!wanted_spec.channels) {
2462             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2463             wanted_spec.channels = wanted_nb_channels;
2464             if (!wanted_spec.freq) {
2465                 av_log(NULL, AV_LOG_ERROR,
2466                        "No more combinations to try, audio open failed\n");
2467                 return -1;
2468             }
2469         }
2470         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2471     }
2472     if (spec.format != AUDIO_S16SYS) {
2473         av_log(NULL, AV_LOG_ERROR,
2474                "SDL advised audio format %d is not supported!\n", spec.format);
2475         return -1;
2476     }
2477     if (spec.channels != wanted_spec.channels) {
2478         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2479         if (!wanted_channel_layout) {
2480             av_log(NULL, AV_LOG_ERROR,
2481                    "SDL advised channel count %d is not supported!\n", spec.channels);
2482             return -1;
2483         }
2484     }
2485
2486     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2487     audio_hw_params->freq = spec.freq;
2488     audio_hw_params->channel_layout = wanted_channel_layout;
2489     audio_hw_params->channels =  spec.channels;
2490     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2491     audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2492     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2493         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2494         return -1;
2495     }
2496     return spec.size;
2497 }
2498
2499 /* open a given stream. Return 0 if OK */
2500 static int stream_component_open(VideoState *is, int stream_index)
2501 {
2502     AVFormatContext *ic = is->ic;
2503     AVCodecContext *avctx;
2504     AVCodec *codec;
2505     const char *forced_codec_name = NULL;
2506     AVDictionary *opts = NULL;
2507     AVDictionaryEntry *t = NULL;
2508     int sample_rate, nb_channels;
2509     int64_t channel_layout;
2510     int ret = 0;
2511     int stream_lowres = lowres;
2512
2513     if (stream_index < 0 || stream_index >= ic->nb_streams)
2514         return -1;
2515
2516     avctx = avcodec_alloc_context3(NULL);
2517     if (!avctx)
2518         return AVERROR(ENOMEM);
2519
2520     ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
2521     if (ret < 0)
2522         goto fail;
2523     av_codec_set_pkt_timebase(avctx, ic->streams[stream_index]->time_base);
2524
2525     codec = avcodec_find_decoder(avctx->codec_id);
2526
2527     switch(avctx->codec_type){
2528         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2529         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2530         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2531     }
2532     if (forced_codec_name)
2533         codec = avcodec_find_decoder_by_name(forced_codec_name);
2534     if (!codec) {
2535         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2536                                       "No codec could be found with name '%s'\n", forced_codec_name);
2537         else                   av_log(NULL, AV_LOG_WARNING,
2538                                       "No codec could be found with id %d\n", avctx->codec_id);
2539         ret = AVERROR(EINVAL);
2540         goto fail;
2541     }
2542
2543     avctx->codec_id = codec->id;
2544     if(stream_lowres > av_codec_get_max_lowres(codec)){
2545         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2546                 av_codec_get_max_lowres(codec));
2547         stream_lowres = av_codec_get_max_lowres(codec);
2548     }
2549     av_codec_set_lowres(avctx, stream_lowres);
2550
2551 #if FF_API_EMU_EDGE
2552     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2553 #endif
2554     if (fast)
2555         avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2556 #if FF_API_EMU_EDGE
2557     if(codec->capabilities & AV_CODEC_CAP_DR1)
2558         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2559 #endif
2560
2561     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2562     if (!av_dict_get(opts, "threads", NULL, 0))
2563         av_dict_set(&opts, "threads", "auto", 0);
2564     if (stream_lowres)
2565         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2566     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2567         av_dict_set(&opts, "refcounted_frames", "1", 0);
2568     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2569         goto fail;
2570     }
2571     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2572         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2573         ret =  AVERROR_OPTION_NOT_FOUND;
2574         goto fail;
2575     }
2576
2577     is->eof = 0;
2578     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2579     switch (avctx->codec_type) {
2580     case AVMEDIA_TYPE_AUDIO:
2581 #if CONFIG_AVFILTER
2582         {
2583             AVFilterContext *sink;
2584
2585             is->audio_filter_src.freq           = avctx->sample_rate;
2586             is->audio_filter_src.channels       = avctx->channels;
2587             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2588             is->audio_filter_src.fmt            = avctx->sample_fmt;
2589             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2590                 goto fail;
2591             sink = is->out_audio_filter;
2592             sample_rate    = av_buffersink_get_sample_rate(sink);
2593             nb_channels    = av_buffersink_get_channels(sink);
2594             channel_layout = av_buffersink_get_channel_layout(sink);
2595         }
2596 #else
2597         sample_rate    = avctx->sample_rate;
2598         nb_channels    = avctx->channels;
2599         channel_layout = avctx->channel_layout;
2600 #endif
2601
2602         /* prepare audio output */
2603         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2604             goto fail;
2605         is->audio_hw_buf_size = ret;
2606         is->audio_src = is->audio_tgt;
2607         is->audio_buf_size  = 0;
2608         is->audio_buf_index = 0;
2609
2610         /* init averaging filter */
2611         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2612         is->audio_diff_avg_count = 0;
2613         /* since we do not have a precise anough audio FIFO fullness,
2614            we correct audio sync only if larger than this threshold */
2615         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2616
2617         is->audio_stream = stream_index;
2618         is->audio_st = ic->streams[stream_index];
2619
2620         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2621         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2622             is->auddec.start_pts = is->audio_st->start_time;
2623             is->auddec.start_pts_tb = is->audio_st->time_base;
2624         }
2625         if ((ret = decoder_start(&is->auddec, audio_thread, is)) < 0)
2626             goto out;
2627         SDL_PauseAudio(0);
2628         break;
2629     case AVMEDIA_TYPE_VIDEO:
2630         is->video_stream = stream_index;
2631         is->video_st = ic->streams[stream_index];
2632
2633         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2634         if ((ret = decoder_start(&is->viddec, video_thread, is)) < 0)
2635             goto out;
2636         is->queue_attachments_req = 1;
2637         break;
2638     case AVMEDIA_TYPE_SUBTITLE:
2639         is->subtitle_stream = stream_index;
2640         is->subtitle_st = ic->streams[stream_index];
2641
2642         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2643         if ((ret = decoder_start(&is->subdec, subtitle_thread, is)) < 0)
2644             goto out;
2645         break;
2646     default:
2647         break;
2648     }
2649     goto out;
2650
2651 fail:
2652     avcodec_free_context(&avctx);
2653 out:
2654     av_dict_free(&opts);
2655
2656     return ret;
2657 }
2658
2659 static int decode_interrupt_cb(void *ctx)
2660 {
2661     VideoState *is = ctx;
2662     return is->abort_request;
2663 }
2664
2665 static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
2666     return stream_id < 0 ||
2667            queue->abort_request ||
2668            (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
2669            queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
2670 }
2671
2672 static int is_realtime(AVFormatContext *s)
2673 {
2674     if(   !strcmp(s->iformat->name, "rtp")
2675        || !strcmp(s->iformat->name, "rtsp")
2676        || !strcmp(s->iformat->name, "sdp")
2677     )
2678         return 1;
2679
2680     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2681                  || !strncmp(s->filename, "udp:", 4)
2682                 )
2683     )
2684         return 1;
2685     return 0;
2686 }
2687
2688 /* this thread gets the stream from the disk or the network */
2689 static int read_thread(void *arg)
2690 {
2691     VideoState *is = arg;
2692     AVFormatContext *ic = NULL;
2693     int err, i, ret;
2694     int st_index[AVMEDIA_TYPE_NB];
2695     AVPacket pkt1, *pkt = &pkt1;
2696     int64_t stream_start_time;
2697     int pkt_in_play_range = 0;
2698     AVDictionaryEntry *t;
2699     SDL_mutex *wait_mutex = SDL_CreateMutex();
2700     int scan_all_pmts_set = 0;
2701     int64_t pkt_ts;
2702
2703     if (!wait_mutex) {
2704         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2705         ret = AVERROR(ENOMEM);
2706         goto fail;
2707     }
2708
2709     memset(st_index, -1, sizeof(st_index));
2710     is->last_video_stream = is->video_stream = -1;
2711     is->last_audio_stream = is->audio_stream = -1;
2712     is->last_subtitle_stream = is->subtitle_stream = -1;
2713     is->eof = 0;
2714
2715     ic = avformat_alloc_context();
2716     if (!ic) {
2717         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2718         ret = AVERROR(ENOMEM);
2719         goto fail;
2720     }
2721     ic->interrupt_callback.callback = decode_interrupt_cb;
2722     ic->interrupt_callback.opaque = is;
2723     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2724         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2725         scan_all_pmts_set = 1;
2726     }
2727     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2728     if (err < 0) {
2729         print_error(is->filename, err);
2730         ret = -1;
2731         goto fail;
2732     }
2733     if (scan_all_pmts_set)
2734         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2735
2736     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2737         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2738         ret = AVERROR_OPTION_NOT_FOUND;
2739         goto fail;
2740     }
2741     is->ic = ic;
2742
2743     if (genpts)
2744         ic->flags |= AVFMT_FLAG_GENPTS;
2745
2746     av_format_inject_global_side_data(ic);
2747
2748     if (find_stream_info) {
2749         AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
2750         int orig_nb_streams = ic->nb_streams;
2751
2752         err = avformat_find_stream_info(ic, opts);
2753
2754         for (i = 0; i < orig_nb_streams; i++)
2755             av_dict_free(&opts[i]);
2756         av_freep(&opts);
2757
2758         if (err < 0) {
2759             av_log(NULL, AV_LOG_WARNING,
2760                    "%s: could not find codec parameters\n", is->filename);
2761             ret = -1;
2762             goto fail;
2763         }
2764     }
2765
2766     if (ic->pb)
2767         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2768
2769     if (seek_by_bytes < 0)
2770         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2771
2772     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2773
2774     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2775         window_title = av_asprintf("%s - %s", t->value, input_filename);
2776
2777     /* if seeking requested, we execute it */
2778     if (start_time != AV_NOPTS_VALUE) {
2779         int64_t timestamp;
2780
2781         timestamp = start_time;
2782         /* add the stream start time */
2783         if (ic->start_time != AV_NOPTS_VALUE)
2784             timestamp += ic->start_time;
2785         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2786         if (ret < 0) {
2787             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2788                     is->filename, (double)timestamp / AV_TIME_BASE);
2789         }
2790     }
2791
2792     is->realtime = is_realtime(ic);
2793
2794     if (show_status)
2795         av_dump_format(ic, 0, is->filename, 0);
2796
2797     for (i = 0; i < ic->nb_streams; i++) {
2798         AVStream *st = ic->streams[i];
2799         enum AVMediaType type = st->codecpar->codec_type;
2800         st->discard = AVDISCARD_ALL;
2801         if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
2802             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2803                 st_index[type] = i;
2804     }
2805     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2806         if (wanted_stream_spec[i] && st_index[i] == -1) {
2807             av_log(NULL, AV_LOG_ERROR, "Stream specifier %s does not match any %s stream\n", wanted_stream_spec[i], av_get_media_type_string(i));
2808             st_index[i] = INT_MAX;
2809         }
2810     }
2811
2812     if (!video_disable)
2813         st_index[AVMEDIA_TYPE_VIDEO] =
2814             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2815                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2816     if (!audio_disable)
2817         st_index[AVMEDIA_TYPE_AUDIO] =
2818             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2819                                 st_index[AVMEDIA_TYPE_AUDIO],
2820                                 st_index[AVMEDIA_TYPE_VIDEO],
2821                                 NULL, 0);
2822     if (!video_disable && !subtitle_disable)
2823         st_index[AVMEDIA_TYPE_SUBTITLE] =
2824             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2825                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2826                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2827                                  st_index[AVMEDIA_TYPE_AUDIO] :
2828                                  st_index[AVMEDIA_TYPE_VIDEO]),
2829                                 NULL, 0);
2830
2831     is->show_mode = show_mode;
2832     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2833         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2834         AVCodecParameters *codecpar = st->codecpar;
2835         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2836         if (codecpar->width)
2837             set_default_window_size(codecpar->width, codecpar->height, sar);
2838     }
2839
2840     /* open the streams */
2841     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2842         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2843     }
2844
2845     ret = -1;
2846     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2847         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2848     }
2849     if (is->show_mode == SHOW_MODE_NONE)
2850         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2851
2852     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2853         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2854     }
2855
2856     if (is->video_stream < 0 && is->audio_stream < 0) {
2857         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2858                is->filename);
2859         ret = -1;
2860         goto fail;
2861     }
2862
2863     if (infinite_buffer < 0 && is->realtime)
2864         infinite_buffer = 1;
2865
2866     for (;;) {
2867         if (is->abort_request)
2868             break;
2869         if (is->paused != is->last_paused) {
2870             is->last_paused = is->paused;
2871             if (is->paused)
2872                 is->read_pause_return = av_read_pause(ic);
2873             else
2874                 av_read_play(ic);
2875         }
2876 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2877         if (is->paused &&
2878                 (!strcmp(ic->iformat->name, "rtsp") ||
2879                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2880             /* wait 10 ms to avoid trying to get another packet */
2881             /* XXX: horrible */
2882             SDL_Delay(10);
2883             continue;
2884         }
2885 #endif
2886         if (is->seek_req) {
2887             int64_t seek_target = is->seek_pos;
2888             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2889             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2890 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2891 //      of the seek_pos/seek_rel variables
2892
2893             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2894             if (ret < 0) {
2895                 av_log(NULL, AV_LOG_ERROR,
2896                        "%s: error while seeking\n", is->ic->filename);
2897             } else {
2898                 if (is->audio_stream >= 0) {
2899                     packet_queue_flush(&is->audioq);
2900                     packet_queue_put(&is->audioq, &flush_pkt);
2901                 }
2902                 if (is->subtitle_stream >= 0) {
2903                     packet_queue_flush(&is->subtitleq);
2904                     packet_queue_put(&is->subtitleq, &flush_pkt);
2905                 }
2906                 if (is->video_stream >= 0) {
2907                     packet_queue_flush(&is->videoq);
2908                     packet_queue_put(&is->videoq, &flush_pkt);
2909                 }
2910                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2911                    set_clock(&is->extclk, NAN, 0);
2912                 } else {
2913                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2914                 }
2915             }
2916             is->seek_req = 0;
2917             is->queue_attachments_req = 1;
2918             is->eof = 0;
2919             if (is->paused)
2920                 step_to_next_frame(is);
2921         }
2922         if (is->queue_attachments_req) {
2923             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2924                 AVPacket copy;
2925                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
2926                     goto fail;
2927                 packet_queue_put(&is->videoq, &copy);
2928                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2929             }
2930             is->queue_attachments_req = 0;
2931         }
2932
2933         /* if the queue are full, no need to read more */
2934         if (infinite_buffer<1 &&
2935               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2936             || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
2937                 stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
2938                 stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
2939             /* wait 10 ms */
2940             SDL_LockMutex(wait_mutex);
2941             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2942             SDL_UnlockMutex(wait_mutex);
2943             continue;
2944         }
2945         if (!is->paused &&
2946             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
2947             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
2948             if (loop != 1 && (!loop || --loop)) {
2949                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2950             } else if (autoexit) {
2951                 ret = AVERROR_EOF;
2952                 goto fail;
2953             }
2954         }
2955         ret = av_read_frame(ic, pkt);
2956         if (ret < 0) {
2957             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
2958                 if (is->video_stream >= 0)
2959                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2960                 if (is->audio_stream >= 0)
2961                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
2962                 if (is->subtitle_stream >= 0)
2963                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
2964                 is->eof = 1;
2965             }
2966             if (ic->pb && ic->pb->error)
2967                 break;
2968             SDL_LockMutex(wait_mutex);
2969             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2970             SDL_UnlockMutex(wait_mutex);
2971             continue;
2972         } else {
2973             is->eof = 0;
2974         }
2975         /* check if packet is in play range specified by user, then queue, otherwise discard */
2976         stream_start_time = ic->streams[pkt->stream_index]->start_time;
2977         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
2978         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2979                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
2980                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2981                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2982                 <= ((double)duration / 1000000);
2983         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2984             packet_queue_put(&is->audioq, pkt);
2985         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
2986                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
2987             packet_queue_put(&is->videoq, pkt);
2988         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2989             packet_queue_put(&is->subtitleq, pkt);
2990         } else {
2991             av_packet_unref(pkt);
2992         }
2993     }
2994
2995     ret = 0;
2996  fail:
2997     if (ic && !is->ic)
2998         avformat_close_input(&ic);
2999
3000     if (ret != 0) {
3001         SDL_Event event;
3002
3003         event.type = FF_QUIT_EVENT;
3004         event.user.data1 = is;
3005         SDL_PushEvent(&event);
3006     }
3007     SDL_DestroyMutex(wait_mutex);
3008     return 0;
3009 }
3010
3011 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3012 {
3013     VideoState *is;
3014
3015     is = av_mallocz(sizeof(VideoState));
3016     if (!is)
3017         return NULL;
3018     is->filename = av_strdup(filename);
3019     if (!is->filename)
3020         goto fail;
3021     is->iformat = iformat;
3022     is->ytop    = 0;
3023     is->xleft   = 0;
3024
3025     /* start video display */
3026     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3027         goto fail;
3028     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3029         goto fail;
3030     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3031         goto fail;
3032
3033     if (packet_queue_init(&is->videoq) < 0 ||
3034         packet_queue_init(&is->audioq) < 0 ||
3035         packet_queue_init(&is->subtitleq) < 0)
3036         goto fail;
3037
3038     if (!(is->continue_read_thread = SDL_CreateCond())) {
3039         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3040         goto fail;
3041     }
3042
3043     init_clock(&is->vidclk, &is->videoq.serial);
3044     init_clock(&is->audclk, &is->audioq.serial);
3045     init_clock(&is->extclk, &is->extclk.serial);
3046     is->audio_clock_serial = -1;
3047     if (startup_volume < 0)
3048         av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
3049     if (startup_volume > 100)
3050         av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
3051     startup_volume = av_clip(startup_volume, 0, 100);
3052     startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
3053     is->audio_volume = startup_volume;
3054     is->muted = 0;
3055     is->av_sync_type = av_sync_type;
3056     is->read_tid     = SDL_CreateThread(read_thread, "read_thread", is);
3057     if (!is->read_tid) {
3058         av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3059 fail:
3060         stream_close(is);
3061         return NULL;
3062     }
3063     return is;
3064 }
3065
3066 static void stream_cycle_channel(VideoState *is, int codec_type)
3067 {
3068     AVFormatContext *ic = is->ic;
3069     int start_index, stream_index;
3070     int old_index;
3071     AVStream *st;
3072     AVProgram *p = NULL;
3073     int nb_streams = is->ic->nb_streams;
3074
3075     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3076         start_index = is->last_video_stream;
3077         old_index = is->video_stream;
3078     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3079         start_index = is->last_audio_stream;
3080         old_index = is->audio_stream;
3081     } else {
3082         start_index = is->last_subtitle_stream;
3083         old_index = is->subtitle_stream;
3084     }
3085     stream_index = start_index;
3086
3087     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3088         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3089         if (p) {
3090             nb_streams = p->nb_stream_indexes;
3091             for (start_index = 0; start_index < nb_streams; start_index++)
3092                 if (p->stream_index[start_index] == stream_index)
3093                     break;
3094             if (start_index == nb_streams)
3095                 start_index = -1;
3096             stream_index = start_index;
3097         }
3098     }
3099
3100     for (;;) {
3101         if (++stream_index >= nb_streams)
3102         {
3103             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3104             {
3105                 stream_index = -1;
3106                 is->last_subtitle_stream = -1;
3107                 goto the_end;
3108             }
3109             if (start_index == -1)
3110                 return;
3111             stream_index = 0;
3112         }
3113         if (stream_index == start_index)
3114             return;
3115         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3116         if (st->codecpar->codec_type == codec_type) {
3117             /* check that parameters are OK */
3118             switch (codec_type) {
3119             case AVMEDIA_TYPE_AUDIO:
3120                 if (st->codecpar->sample_rate != 0 &&
3121                     st->codecpar->channels != 0)
3122                     goto the_end;
3123                 break;
3124             case AVMEDIA_TYPE_VIDEO:
3125             case AVMEDIA_TYPE_SUBTITLE:
3126                 goto the_end;
3127             default:
3128                 break;
3129             }
3130         }
3131     }
3132  the_end:
3133     if (p && stream_index != -1)
3134         stream_index = p->stream_index[stream_index];
3135     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3136            av_get_media_type_string(codec_type),
3137            old_index,
3138            stream_index);
3139
3140     stream_component_close(is, old_index);
3141     stream_component_open(is, stream_index);
3142 }
3143
3144
3145 static void toggle_full_screen(VideoState *is)
3146 {
3147     is_full_screen = !is_full_screen;
3148     SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
3149 }
3150
3151 static void toggle_audio_display(VideoState *is)
3152 {
3153     int next = is->show_mode;
3154     do {
3155         next = (next + 1) % SHOW_MODE_NB;
3156     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3157     if (is->show_mode != next) {
3158         is->force_refresh = 1;
3159         is->show_mode = next;
3160     }
3161 }
3162
3163 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3164     double remaining_time = 0.0;
3165     SDL_PumpEvents();
3166     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
3167         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3168             SDL_ShowCursor(0);
3169             cursor_hidden = 1;
3170         }
3171         if (remaining_time > 0.0)
3172             av_usleep((int64_t)(remaining_time * 1000000.0));
3173         remaining_time = REFRESH_RATE;
3174         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3175             video_refresh(is, &remaining_time);
3176         SDL_PumpEvents();
3177     }
3178 }
3179
3180 static void seek_chapter(VideoState *is, int incr)
3181 {
3182     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3183     int i;
3184
3185     if (!is->ic->nb_chapters)
3186         return;
3187
3188     /* find the current chapter */
3189     for (i = 0; i < is->ic->nb_chapters; i++) {
3190         AVChapter *ch = is->ic->chapters[i];
3191         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3192             i--;
3193             break;
3194         }
3195     }
3196
3197     i += incr;
3198     i = FFMAX(i, 0);
3199     if (i >= is->ic->nb_chapters)
3200         return;
3201
3202     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3203     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3204                                  AV_TIME_BASE_Q), 0, 0);
3205 }
3206
3207 /* handle an event sent by the GUI */
3208 static void event_loop(VideoState *cur_stream)
3209 {
3210     SDL_Event event;
3211     double incr, pos, frac;
3212
3213     for (;;) {
3214         double x;
3215         refresh_loop_wait_event(cur_stream, &event);
3216         switch (event.type) {
3217         case SDL_KEYDOWN:
3218             if (exit_on_keydown) {
3219                 do_exit(cur_stream);
3220                 break;
3221             }
3222             switch (event.key.keysym.sym) {
3223             case SDLK_ESCAPE:
3224             case SDLK_q:
3225                 do_exit(cur_stream);
3226                 break;
3227             case SDLK_f:
3228                 toggle_full_screen(cur_stream);
3229                 cur_stream->force_refresh = 1;
3230                 break;
3231             case SDLK_p:
3232             case SDLK_SPACE:
3233                 toggle_pause(cur_stream);
3234                 break;
3235             case SDLK_m:
3236                 toggle_mute(cur_stream);
3237                 break;
3238             case SDLK_KP_MULTIPLY:
3239             case SDLK_0:
3240                 update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3241                 break;
3242             case SDLK_KP_DIVIDE:
3243             case SDLK_9:
3244                 update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3245                 break;
3246             case SDLK_s: // S: Step to next frame
3247                 step_to_next_frame(cur_stream);
3248                 break;
3249             case SDLK_a:
3250                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3251                 break;
3252             case SDLK_v:
3253                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3254                 break;
3255             case SDLK_c:
3256                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3257                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3258                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3259                 break;
3260             case SDLK_t:
3261                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3262                 break;
3263             case SDLK_w:
3264 #if CONFIG_AVFILTER
3265                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3266                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3267                         cur_stream->vfilter_idx = 0;
3268                 } else {
3269                     cur_stream->vfilter_idx = 0;
3270                     toggle_audio_display(cur_stream);
3271                 }
3272 #else
3273                 toggle_audio_display(cur_stream);
3274 #endif
3275                 break;
3276             case SDLK_PAGEUP:
3277                 if (cur_stream->ic->nb_chapters <= 1) {
3278                     incr = 600.0;
3279                     goto do_seek;
3280                 }
3281                 seek_chapter(cur_stream, 1);
3282                 break;
3283             case SDLK_PAGEDOWN:
3284                 if (cur_stream->ic->nb_chapters <= 1) {
3285                     incr = -600.0;
3286                     goto do_seek;
3287                 }
3288                 seek_chapter(cur_stream, -1);
3289                 break;
3290             case SDLK_LEFT:
3291                 incr = -10.0;
3292                 goto do_seek;
3293             case SDLK_RIGHT:
3294                 incr = 10.0;
3295                 goto do_seek;
3296             case SDLK_UP:
3297                 incr = 60.0;
3298                 goto do_seek;
3299             case SDLK_DOWN:
3300                 incr = -60.0;
3301             do_seek:
3302                     if (seek_by_bytes) {
3303                         pos = -1;
3304                         if (pos < 0 && cur_stream->video_stream >= 0)
3305                             pos = frame_queue_last_pos(&cur_stream->pictq);
3306                         if (pos < 0 && cur_stream->audio_stream >= 0)
3307                             pos = frame_queue_last_pos(&cur_stream->sampq);
3308                         if (pos < 0)
3309                             pos = avio_tell(cur_stream->ic->pb);
3310                         if (cur_stream->ic->bit_rate)
3311                             incr *= cur_stream->ic->bit_rate / 8.0;
3312                         else
3313                             incr *= 180000.0;
3314                         pos += incr;
3315                         stream_seek(cur_stream, pos, incr, 1);
3316                     } else {
3317                         pos = get_master_clock(cur_stream);
3318                         if (isnan(pos))
3319                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3320                         pos += incr;
3321                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3322                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3323                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3324                     }
3325                 break;
3326             default:
3327                 break;
3328             }
3329             break;
3330         case SDL_MOUSEBUTTONDOWN:
3331             if (exit_on_mousedown) {
3332                 do_exit(cur_stream);
3333                 break;
3334             }
3335             if (event.button.button == SDL_BUTTON_LEFT) {
3336                 static int64_t last_mouse_left_click = 0;
3337                 if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3338                     toggle_full_screen(cur_stream);
3339                     cur_stream->force_refresh = 1;
3340                     last_mouse_left_click = 0;
3341                 } else {
3342                     last_mouse_left_click = av_gettime_relative();
3343                 }
3344             }
3345         case SDL_MOUSEMOTION:
3346             if (cursor_hidden) {
3347                 SDL_ShowCursor(1);
3348                 cursor_hidden = 0;
3349             }
3350             cursor_last_shown = av_gettime_relative();
3351             if (event.type == SDL_MOUSEBUTTONDOWN) {
3352                 if (event.button.button != SDL_BUTTON_RIGHT)
3353                     break;
3354                 x = event.button.x;
3355             } else {
3356                 if (!(event.motion.state & SDL_BUTTON_RMASK))
3357                     break;
3358                 x = event.motion.x;
3359             }
3360                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3361                     uint64_t size =  avio_size(cur_stream->ic->pb);
3362                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3363                 } else {
3364                     int64_t ts;
3365                     int ns, hh, mm, ss;
3366                     int tns, thh, tmm, tss;
3367                     tns  = cur_stream->ic->duration / 1000000LL;
3368                     thh  = tns / 3600;
3369                     tmm  = (tns % 3600) / 60;
3370                     tss  = (tns % 60);
3371                     frac = x / cur_stream->width;
3372                     ns   = frac * tns;
3373                     hh   = ns / 3600;
3374                     mm   = (ns % 3600) / 60;
3375                     ss   = (ns % 60);
3376                     av_log(NULL, AV_LOG_INFO,
3377                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3378                             hh, mm, ss, thh, tmm, tss);
3379                     ts = frac * cur_stream->ic->duration;
3380                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3381                         ts += cur_stream->ic->start_time;
3382                     stream_seek(cur_stream, ts, 0, 0);
3383                 }
3384             break;
3385         case SDL_WINDOWEVENT:
3386             switch (event.window.event) {
3387                 case SDL_WINDOWEVENT_RESIZED:
3388                     screen_width  = cur_stream->width  = event.window.data1;
3389                     screen_height = cur_stream->height = event.window.data2;
3390                     if (cur_stream->vis_texture) {
3391                         SDL_DestroyTexture(cur_stream->vis_texture);
3392                         cur_stream->vis_texture = NULL;
3393                     }
3394                 case SDL_WINDOWEVENT_EXPOSED:
3395                     cur_stream->force_refresh = 1;
3396             }
3397             break;
3398         case SDL_QUIT:
3399         case FF_QUIT_EVENT:
3400             do_exit(cur_stream);
3401             break;
3402         default:
3403             break;
3404         }
3405     }
3406 }
3407
3408 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3409 {
3410     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3411     return opt_default(NULL, "video_size", arg);
3412 }
3413
3414 static int opt_width(void *optctx, const char *opt, const char *arg)
3415 {
3416     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3417     return 0;
3418 }
3419
3420 static int opt_height(void *optctx, const char *opt, const char *arg)
3421 {
3422     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3423     return 0;
3424 }
3425
3426 static int opt_format(void *optctx, const char *opt, const char *arg)
3427 {
3428     file_iformat = av_find_input_format(arg);
3429     if (!file_iformat) {
3430         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3431         return AVERROR(EINVAL);
3432     }
3433     return 0;
3434 }
3435
3436 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3437 {
3438     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3439     return opt_default(NULL, "pixel_format", arg);
3440 }
3441
3442 static int opt_sync(void *optctx, const char *opt, const char *arg)
3443 {
3444     if (!strcmp(arg, "audio"))
3445         av_sync_type = AV_SYNC_AUDIO_MASTER;
3446     else if (!strcmp(arg, "video"))
3447         av_sync_type = AV_SYNC_VIDEO_MASTER;
3448     else if (!strcmp(arg, "ext"))
3449         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3450     else {
3451         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3452         exit(1);
3453     }
3454     return 0;
3455 }
3456
3457 static int opt_seek(void *optctx, const char *opt, const char *arg)
3458 {
3459     start_time = parse_time_or_die(opt, arg, 1);
3460     return 0;
3461 }
3462
3463 static int opt_duration(void *optctx, const char *opt, const char *arg)
3464 {
3465     duration = parse_time_or_die(opt, arg, 1);
3466     return 0;
3467 }
3468
3469 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3470 {
3471     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3472                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3473                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3474                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3475     return 0;
3476 }
3477
3478 static void opt_input_file(void *optctx, const char *filename)
3479 {
3480     if (input_filename) {
3481         av_log(NULL, AV_LOG_FATAL,
3482                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3483                 filename, input_filename);
3484         exit(1);
3485     }
3486     if (!strcmp(filename, "-"))
3487         filename = "pipe:";
3488     input_filename = filename;
3489 }
3490
3491 static int opt_codec(void *optctx, const char *opt, const char *arg)
3492 {
3493    const char *spec = strchr(opt, ':');
3494    if (!spec) {
3495        av_log(NULL, AV_LOG_ERROR,
3496               "No media specifier was specified in '%s' in option '%s'\n",
3497                arg, opt);
3498        return AVERROR(EINVAL);
3499    }
3500    spec++;
3501    switch (spec[0]) {
3502    case 'a' :    audio_codec_name = arg; break;
3503    case 's' : subtitle_codec_name = arg; break;
3504    case 'v' :    video_codec_name = arg; break;
3505    default:
3506        av_log(NULL, AV_LOG_ERROR,
3507               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3508        return AVERROR(EINVAL);
3509    }
3510    return 0;
3511 }
3512
3513 static int dummy;
3514
3515 static const OptionDef options[] = {
3516     CMDUTILS_COMMON_OPTIONS
3517     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3518     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3519     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3520     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3521     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3522     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3523     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3524     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3525     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3526     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3527     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3528     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3529     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3530     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3531     { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
3532     { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
3533     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3534     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3535     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3536     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3537     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3538     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3539     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3540     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3541     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3542     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3543     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3544     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3545     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3546     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3547     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3548 #if CONFIG_AVFILTER
3549     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3550     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3551 #endif
3552     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3553     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3554     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3555     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3556     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3557     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3558     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3559     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3560     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3561     { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
3562         "read and decode the streams to fill missing information with heuristics" },
3563     { NULL, },
3564 };
3565
3566 static void show_usage(void)
3567 {
3568     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3569     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3570     av_log(NULL, AV_LOG_INFO, "\n");
3571 }
3572
3573 void show_help_default(const char *opt, const char *arg)
3574 {
3575     av_log_set_callback(log_callback_help);
3576     show_usage();
3577     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3578     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3579     printf("\n");
3580     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3581     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3582 #if !CONFIG_AVFILTER
3583     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3584 #else
3585     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3586 #endif
3587     printf("\nWhile playing:\n"
3588            "q, ESC              quit\n"
3589            "f                   toggle full screen\n"
3590            "p, SPC              pause\n"
3591            "m                   toggle mute\n"
3592            "9, 0                decrease and increase volume respectively\n"
3593            "/, *                decrease and increase volume respectively\n"
3594            "a                   cycle audio channel in the current program\n"
3595            "v                   cycle video channel\n"
3596            "t                   cycle subtitle channel in the current program\n"
3597            "c                   cycle program\n"
3598            "w                   cycle video filters or show modes\n"
3599            "s                   activate frame-step mode\n"
3600            "left/right          seek backward/forward 10 seconds\n"
3601            "down/up             seek backward/forward 1 minute\n"
3602            "page down/page up   seek backward/forward 10 minutes\n"
3603            "right mouse click   seek to percentage in file corresponding to fraction of width\n"
3604            "left double-click   toggle full screen\n"
3605            );
3606 }
3607
3608 static int lockmgr(void **mtx, enum AVLockOp op)
3609 {
3610    switch(op) {
3611       case AV_LOCK_CREATE:
3612           *mtx = SDL_CreateMutex();
3613           if(!*mtx) {
3614               av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
3615               return 1;
3616           }
3617           return 0;
3618       case AV_LOCK_OBTAIN:
3619           return !!SDL_LockMutex(*mtx);
3620       case AV_LOCK_RELEASE:
3621           return !!SDL_UnlockMutex(*mtx);
3622       case AV_LOCK_DESTROY:
3623           SDL_DestroyMutex(*mtx);
3624           return 0;
3625    }
3626    return 1;
3627 }
3628
3629 /* Called from the main */
3630 int main(int argc, char **argv)
3631 {
3632     int flags;
3633     VideoState *is;
3634
3635     init_dynload();
3636
3637     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3638     parse_loglevel(argc, argv, options);
3639
3640     /* register all codecs, demux and protocols */
3641 #if CONFIG_AVDEVICE
3642     avdevice_register_all();
3643 #endif
3644 #if CONFIG_AVFILTER
3645     avfilter_register_all();
3646 #endif
3647     av_register_all();
3648     avformat_network_init();
3649
3650     init_opts();
3651
3652     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3653     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3654
3655     show_banner(argc, argv, options);
3656
3657     parse_options(NULL, argc, argv, options, opt_input_file);
3658
3659     if (!input_filename) {
3660         show_usage();
3661         av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
3662         av_log(NULL, AV_LOG_FATAL,
3663                "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3664         exit(1);
3665     }
3666
3667     if (display_disable) {
3668         video_disable = 1;
3669     }
3670     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3671     if (audio_disable)
3672         flags &= ~SDL_INIT_AUDIO;
3673     else {
3674         /* Try to work around an occasional ALSA buffer underflow issue when the
3675          * period size is NPOT due to ALSA resampling by forcing the buffer size. */
3676         if (!SDL_getenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE"))
3677             SDL_setenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE","1", 1);
3678     }
3679     if (display_disable)
3680         flags &= ~SDL_INIT_VIDEO;
3681     if (SDL_Init (flags)) {
3682         av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
3683         av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
3684         exit(1);
3685     }
3686
3687     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3688     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3689
3690     if (av_lockmgr_register(lockmgr)) {
3691         av_log(NULL, AV_LOG_FATAL, "Could not initialize lock manager!\n");
3692         do_exit(NULL);
3693     }
3694
3695     av_init_packet(&flush_pkt);
3696     flush_pkt.data = (uint8_t *)&flush_pkt;
3697
3698     is = stream_open(input_filename, file_iformat);
3699     if (!is) {
3700         av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
3701         do_exit(NULL);
3702     }
3703
3704     event_loop(is);
3705
3706     /* never returns */
3707
3708     return 0;
3709 }