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