avcodec/flac_parser: Cosmetics
[ffmpeg.git] / fftools / 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 screen_left = SDL_WINDOWPOS_CENTERED;
318 static int screen_top = SDL_WINDOWPOS_CENTERED;
319 static int audio_disable;
320 static int video_disable;
321 static int subtitle_disable;
322 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
323 static int seek_by_bytes = -1;
324 static float seek_interval = 10;
325 static int display_disable;
326 static int borderless;
327 static int alwaysontop;
328 static int startup_volume = 100;
329 static int show_status = 1;
330 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
331 static int64_t start_time = AV_NOPTS_VALUE;
332 static int64_t duration = AV_NOPTS_VALUE;
333 static int fast = 0;
334 static int genpts = 0;
335 static int lowres = 0;
336 static int decoder_reorder_pts = -1;
337 static int autoexit;
338 static int exit_on_keydown;
339 static int exit_on_mousedown;
340 static int loop = 1;
341 static int framedrop = -1;
342 static int infinite_buffer = -1;
343 static enum ShowMode show_mode = SHOW_MODE_NONE;
344 static const char *audio_codec_name;
345 static const char *subtitle_codec_name;
346 static const char *video_codec_name;
347 double rdftspeed = 0.02;
348 static int64_t cursor_last_shown;
349 static int cursor_hidden = 0;
350 #if CONFIG_AVFILTER
351 static const char **vfilters_list = NULL;
352 static int nb_vfilters = 0;
353 static char *afilters = NULL;
354 #endif
355 static int autorotate = 1;
356 static int find_stream_info = 1;
357 static int filter_nbthreads = 0;
358
359 /* current context */
360 static int is_full_screen;
361 static int64_t audio_callback_time;
362
363 static AVPacket flush_pkt;
364
365 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
366
367 static SDL_Window *window;
368 static SDL_Renderer *renderer;
369 static SDL_RendererInfo renderer_info = {0};
370 static SDL_AudioDeviceID audio_dev;
371
372 static const struct TextureFormatEntry {
373     enum AVPixelFormat format;
374     int texture_fmt;
375 } sdl_texture_format_map[] = {
376     { AV_PIX_FMT_RGB8,           SDL_PIXELFORMAT_RGB332 },
377     { AV_PIX_FMT_RGB444,         SDL_PIXELFORMAT_RGB444 },
378     { AV_PIX_FMT_RGB555,         SDL_PIXELFORMAT_RGB555 },
379     { AV_PIX_FMT_BGR555,         SDL_PIXELFORMAT_BGR555 },
380     { AV_PIX_FMT_RGB565,         SDL_PIXELFORMAT_RGB565 },
381     { AV_PIX_FMT_BGR565,         SDL_PIXELFORMAT_BGR565 },
382     { AV_PIX_FMT_RGB24,          SDL_PIXELFORMAT_RGB24 },
383     { AV_PIX_FMT_BGR24,          SDL_PIXELFORMAT_BGR24 },
384     { AV_PIX_FMT_0RGB32,         SDL_PIXELFORMAT_RGB888 },
385     { AV_PIX_FMT_0BGR32,         SDL_PIXELFORMAT_BGR888 },
386     { AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
387     { AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
388     { AV_PIX_FMT_RGB32,          SDL_PIXELFORMAT_ARGB8888 },
389     { AV_PIX_FMT_RGB32_1,        SDL_PIXELFORMAT_RGBA8888 },
390     { AV_PIX_FMT_BGR32,          SDL_PIXELFORMAT_ABGR8888 },
391     { AV_PIX_FMT_BGR32_1,        SDL_PIXELFORMAT_BGRA8888 },
392     { AV_PIX_FMT_YUV420P,        SDL_PIXELFORMAT_IYUV },
393     { AV_PIX_FMT_YUYV422,        SDL_PIXELFORMAT_YUY2 },
394     { AV_PIX_FMT_UYVY422,        SDL_PIXELFORMAT_UYVY },
395     { AV_PIX_FMT_NONE,           SDL_PIXELFORMAT_UNKNOWN },
396 };
397
398 #if CONFIG_AVFILTER
399 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
400 {
401     GROW_ARRAY(vfilters_list, nb_vfilters);
402     vfilters_list[nb_vfilters - 1] = arg;
403     return 0;
404 }
405 #endif
406
407 static inline
408 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
409                    enum AVSampleFormat fmt2, int64_t channel_count2)
410 {
411     /* If channel count == 1, planar and non-planar formats are the same */
412     if (channel_count1 == 1 && channel_count2 == 1)
413         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
414     else
415         return channel_count1 != channel_count2 || fmt1 != fmt2;
416 }
417
418 static inline
419 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
420 {
421     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
422         return channel_layout;
423     else
424         return 0;
425 }
426
427 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
428 {
429     MyAVPacketList *pkt1;
430
431     if (q->abort_request)
432        return -1;
433
434     pkt1 = av_malloc(sizeof(MyAVPacketList));
435     if (!pkt1)
436         return -1;
437     pkt1->pkt = *pkt;
438     pkt1->next = NULL;
439     if (pkt == &flush_pkt)
440         q->serial++;
441     pkt1->serial = q->serial;
442
443     if (!q->last_pkt)
444         q->first_pkt = pkt1;
445     else
446         q->last_pkt->next = pkt1;
447     q->last_pkt = pkt1;
448     q->nb_packets++;
449     q->size += pkt1->pkt.size + sizeof(*pkt1);
450     q->duration += pkt1->pkt.duration;
451     /* XXX: should duplicate packet data in DV case */
452     SDL_CondSignal(q->cond);
453     return 0;
454 }
455
456 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
457 {
458     int ret;
459
460     SDL_LockMutex(q->mutex);
461     ret = packet_queue_put_private(q, pkt);
462     SDL_UnlockMutex(q->mutex);
463
464     if (pkt != &flush_pkt && ret < 0)
465         av_packet_unref(pkt);
466
467     return ret;
468 }
469
470 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
471 {
472     AVPacket pkt1, *pkt = &pkt1;
473     av_init_packet(pkt);
474     pkt->data = NULL;
475     pkt->size = 0;
476     pkt->stream_index = stream_index;
477     return packet_queue_put(q, pkt);
478 }
479
480 /* packet queue handling */
481 static int packet_queue_init(PacketQueue *q)
482 {
483     memset(q, 0, sizeof(PacketQueue));
484     q->mutex = SDL_CreateMutex();
485     if (!q->mutex) {
486         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
487         return AVERROR(ENOMEM);
488     }
489     q->cond = SDL_CreateCond();
490     if (!q->cond) {
491         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
492         return AVERROR(ENOMEM);
493     }
494     q->abort_request = 1;
495     return 0;
496 }
497
498 static void packet_queue_flush(PacketQueue *q)
499 {
500     MyAVPacketList *pkt, *pkt1;
501
502     SDL_LockMutex(q->mutex);
503     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
504         pkt1 = pkt->next;
505         av_packet_unref(&pkt->pkt);
506         av_freep(&pkt);
507     }
508     q->last_pkt = NULL;
509     q->first_pkt = NULL;
510     q->nb_packets = 0;
511     q->size = 0;
512     q->duration = 0;
513     SDL_UnlockMutex(q->mutex);
514 }
515
516 static void packet_queue_destroy(PacketQueue *q)
517 {
518     packet_queue_flush(q);
519     SDL_DestroyMutex(q->mutex);
520     SDL_DestroyCond(q->cond);
521 }
522
523 static void packet_queue_abort(PacketQueue *q)
524 {
525     SDL_LockMutex(q->mutex);
526
527     q->abort_request = 1;
528
529     SDL_CondSignal(q->cond);
530
531     SDL_UnlockMutex(q->mutex);
532 }
533
534 static void packet_queue_start(PacketQueue *q)
535 {
536     SDL_LockMutex(q->mutex);
537     q->abort_request = 0;
538     packet_queue_put_private(q, &flush_pkt);
539     SDL_UnlockMutex(q->mutex);
540 }
541
542 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
543 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
544 {
545     MyAVPacketList *pkt1;
546     int ret;
547
548     SDL_LockMutex(q->mutex);
549
550     for (;;) {
551         if (q->abort_request) {
552             ret = -1;
553             break;
554         }
555
556         pkt1 = q->first_pkt;
557         if (pkt1) {
558             q->first_pkt = pkt1->next;
559             if (!q->first_pkt)
560                 q->last_pkt = NULL;
561             q->nb_packets--;
562             q->size -= pkt1->pkt.size + sizeof(*pkt1);
563             q->duration -= pkt1->pkt.duration;
564             *pkt = pkt1->pkt;
565             if (serial)
566                 *serial = pkt1->serial;
567             av_free(pkt1);
568             ret = 1;
569             break;
570         } else if (!block) {
571             ret = 0;
572             break;
573         } else {
574             SDL_CondWait(q->cond, q->mutex);
575         }
576     }
577     SDL_UnlockMutex(q->mutex);
578     return ret;
579 }
580
581 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
582     memset(d, 0, sizeof(Decoder));
583     d->avctx = avctx;
584     d->queue = queue;
585     d->empty_queue_cond = empty_queue_cond;
586     d->start_pts = AV_NOPTS_VALUE;
587     d->pkt_serial = -1;
588 }
589
590 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
591     int ret = AVERROR(EAGAIN);
592
593     for (;;) {
594         AVPacket pkt;
595
596         if (d->queue->serial == d->pkt_serial) {
597             do {
598                 if (d->queue->abort_request)
599                     return -1;
600
601                 switch (d->avctx->codec_type) {
602                     case AVMEDIA_TYPE_VIDEO:
603                         ret = avcodec_receive_frame(d->avctx, frame);
604                         if (ret >= 0) {
605                             if (decoder_reorder_pts == -1) {
606                                 frame->pts = frame->best_effort_timestamp;
607                             } else if (!decoder_reorder_pts) {
608                                 frame->pts = frame->pkt_dts;
609                             }
610                         }
611                         break;
612                     case AVMEDIA_TYPE_AUDIO:
613                         ret = avcodec_receive_frame(d->avctx, frame);
614                         if (ret >= 0) {
615                             AVRational tb = (AVRational){1, frame->sample_rate};
616                             if (frame->pts != AV_NOPTS_VALUE)
617                                 frame->pts = av_rescale_q(frame->pts, d->avctx->pkt_timebase, tb);
618                             else if (d->next_pts != AV_NOPTS_VALUE)
619                                 frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
620                             if (frame->pts != AV_NOPTS_VALUE) {
621                                 d->next_pts = frame->pts + frame->nb_samples;
622                                 d->next_pts_tb = tb;
623                             }
624                         }
625                         break;
626                 }
627                 if (ret == AVERROR_EOF) {
628                     d->finished = d->pkt_serial;
629                     avcodec_flush_buffers(d->avctx);
630                     return 0;
631                 }
632                 if (ret >= 0)
633                     return 1;
634             } while (ret != AVERROR(EAGAIN));
635         }
636
637         do {
638             if (d->queue->nb_packets == 0)
639                 SDL_CondSignal(d->empty_queue_cond);
640             if (d->packet_pending) {
641                 av_packet_move_ref(&pkt, &d->pkt);
642                 d->packet_pending = 0;
643             } else {
644                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
645                     return -1;
646             }
647         } while (d->queue->serial != d->pkt_serial);
648
649         if (pkt.data == flush_pkt.data) {
650             avcodec_flush_buffers(d->avctx);
651             d->finished = 0;
652             d->next_pts = d->start_pts;
653             d->next_pts_tb = d->start_pts_tb;
654         } else {
655             if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
656                 int got_frame = 0;
657                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &pkt);
658                 if (ret < 0) {
659                     ret = AVERROR(EAGAIN);
660                 } else {
661                     if (got_frame && !pkt.data) {
662                        d->packet_pending = 1;
663                        av_packet_move_ref(&d->pkt, &pkt);
664                     }
665                     ret = got_frame ? 0 : (pkt.data ? AVERROR(EAGAIN) : AVERROR_EOF);
666                 }
667             } else {
668                 if (avcodec_send_packet(d->avctx, &pkt) == AVERROR(EAGAIN)) {
669                     av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
670                     d->packet_pending = 1;
671                     av_packet_move_ref(&d->pkt, &pkt);
672                 }
673             }
674             av_packet_unref(&pkt);
675         }
676     }
677 }
678
679 static void decoder_destroy(Decoder *d) {
680     av_packet_unref(&d->pkt);
681     avcodec_free_context(&d->avctx);
682 }
683
684 static void frame_queue_unref_item(Frame *vp)
685 {
686     av_frame_unref(vp->frame);
687     avsubtitle_free(&vp->sub);
688 }
689
690 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
691 {
692     int i;
693     memset(f, 0, sizeof(FrameQueue));
694     if (!(f->mutex = SDL_CreateMutex())) {
695         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
696         return AVERROR(ENOMEM);
697     }
698     if (!(f->cond = SDL_CreateCond())) {
699         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
700         return AVERROR(ENOMEM);
701     }
702     f->pktq = pktq;
703     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
704     f->keep_last = !!keep_last;
705     for (i = 0; i < f->max_size; i++)
706         if (!(f->queue[i].frame = av_frame_alloc()))
707             return AVERROR(ENOMEM);
708     return 0;
709 }
710
711 static void frame_queue_destory(FrameQueue *f)
712 {
713     int i;
714     for (i = 0; i < f->max_size; i++) {
715         Frame *vp = &f->queue[i];
716         frame_queue_unref_item(vp);
717         av_frame_free(&vp->frame);
718     }
719     SDL_DestroyMutex(f->mutex);
720     SDL_DestroyCond(f->cond);
721 }
722
723 static void frame_queue_signal(FrameQueue *f)
724 {
725     SDL_LockMutex(f->mutex);
726     SDL_CondSignal(f->cond);
727     SDL_UnlockMutex(f->mutex);
728 }
729
730 static Frame *frame_queue_peek(FrameQueue *f)
731 {
732     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
733 }
734
735 static Frame *frame_queue_peek_next(FrameQueue *f)
736 {
737     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
738 }
739
740 static Frame *frame_queue_peek_last(FrameQueue *f)
741 {
742     return &f->queue[f->rindex];
743 }
744
745 static Frame *frame_queue_peek_writable(FrameQueue *f)
746 {
747     /* wait until we have space to put a new frame */
748     SDL_LockMutex(f->mutex);
749     while (f->size >= f->max_size &&
750            !f->pktq->abort_request) {
751         SDL_CondWait(f->cond, f->mutex);
752     }
753     SDL_UnlockMutex(f->mutex);
754
755     if (f->pktq->abort_request)
756         return NULL;
757
758     return &f->queue[f->windex];
759 }
760
761 static Frame *frame_queue_peek_readable(FrameQueue *f)
762 {
763     /* wait until we have a readable a new frame */
764     SDL_LockMutex(f->mutex);
765     while (f->size - f->rindex_shown <= 0 &&
766            !f->pktq->abort_request) {
767         SDL_CondWait(f->cond, f->mutex);
768     }
769     SDL_UnlockMutex(f->mutex);
770
771     if (f->pktq->abort_request)
772         return NULL;
773
774     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
775 }
776
777 static void frame_queue_push(FrameQueue *f)
778 {
779     if (++f->windex == f->max_size)
780         f->windex = 0;
781     SDL_LockMutex(f->mutex);
782     f->size++;
783     SDL_CondSignal(f->cond);
784     SDL_UnlockMutex(f->mutex);
785 }
786
787 static void frame_queue_next(FrameQueue *f)
788 {
789     if (f->keep_last && !f->rindex_shown) {
790         f->rindex_shown = 1;
791         return;
792     }
793     frame_queue_unref_item(&f->queue[f->rindex]);
794     if (++f->rindex == f->max_size)
795         f->rindex = 0;
796     SDL_LockMutex(f->mutex);
797     f->size--;
798     SDL_CondSignal(f->cond);
799     SDL_UnlockMutex(f->mutex);
800 }
801
802 /* return the number of undisplayed frames in the queue */
803 static int frame_queue_nb_remaining(FrameQueue *f)
804 {
805     return f->size - f->rindex_shown;
806 }
807
808 /* return last shown position */
809 static int64_t frame_queue_last_pos(FrameQueue *f)
810 {
811     Frame *fp = &f->queue[f->rindex];
812     if (f->rindex_shown && fp->serial == f->pktq->serial)
813         return fp->pos;
814     else
815         return -1;
816 }
817
818 static void decoder_abort(Decoder *d, FrameQueue *fq)
819 {
820     packet_queue_abort(d->queue);
821     frame_queue_signal(fq);
822     SDL_WaitThread(d->decoder_tid, NULL);
823     d->decoder_tid = NULL;
824     packet_queue_flush(d->queue);
825 }
826
827 static inline void fill_rectangle(int x, int y, int w, int h)
828 {
829     SDL_Rect rect;
830     rect.x = x;
831     rect.y = y;
832     rect.w = w;
833     rect.h = h;
834     if (w && h)
835         SDL_RenderFillRect(renderer, &rect);
836 }
837
838 static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
839 {
840     Uint32 format;
841     int access, w, h;
842     if (!*texture || SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
843         void *pixels;
844         int pitch;
845         if (*texture)
846             SDL_DestroyTexture(*texture);
847         if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
848             return -1;
849         if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
850             return -1;
851         if (init_texture) {
852             if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
853                 return -1;
854             memset(pixels, 0, pitch * new_height);
855             SDL_UnlockTexture(*texture);
856         }
857         av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
858     }
859     return 0;
860 }
861
862 static void calculate_display_rect(SDL_Rect *rect,
863                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
864                                    int pic_width, int pic_height, AVRational pic_sar)
865 {
866     AVRational aspect_ratio = pic_sar;
867     int64_t width, height, x, y;
868
869     if (av_cmp_q(aspect_ratio, av_make_q(0, 1)) <= 0)
870         aspect_ratio = av_make_q(1, 1);
871
872     aspect_ratio = av_mul_q(aspect_ratio, av_make_q(pic_width, pic_height));
873
874     /* XXX: we suppose the screen has a 1.0 pixel ratio */
875     height = scr_height;
876     width = av_rescale(height, aspect_ratio.num, aspect_ratio.den) & ~1;
877     if (width > scr_width) {
878         width = scr_width;
879         height = av_rescale(width, aspect_ratio.den, aspect_ratio.num) & ~1;
880     }
881     x = (scr_width - width) / 2;
882     y = (scr_height - height) / 2;
883     rect->x = scr_xleft + x;
884     rect->y = scr_ytop  + y;
885     rect->w = FFMAX((int)width,  1);
886     rect->h = FFMAX((int)height, 1);
887 }
888
889 static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
890 {
891     int i;
892     *sdl_blendmode = SDL_BLENDMODE_NONE;
893     *sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
894     if (format == AV_PIX_FMT_RGB32   ||
895         format == AV_PIX_FMT_RGB32_1 ||
896         format == AV_PIX_FMT_BGR32   ||
897         format == AV_PIX_FMT_BGR32_1)
898         *sdl_blendmode = SDL_BLENDMODE_BLEND;
899     for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
900         if (format == sdl_texture_format_map[i].format) {
901             *sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
902             return;
903         }
904     }
905 }
906
907 static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
908     int ret = 0;
909     Uint32 sdl_pix_fmt;
910     SDL_BlendMode sdl_blendmode;
911     get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
912     if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
913         return -1;
914     switch (sdl_pix_fmt) {
915         case SDL_PIXELFORMAT_UNKNOWN:
916             /* This should only happen if we are not using avfilter... */
917             *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
918                 frame->width, frame->height, frame->format, frame->width, frame->height,
919                 AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
920             if (*img_convert_ctx != NULL) {
921                 uint8_t *pixels[4];
922                 int pitch[4];
923                 if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
924                     sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
925                               0, frame->height, pixels, pitch);
926                     SDL_UnlockTexture(*tex);
927                 }
928             } else {
929                 av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
930                 ret = -1;
931             }
932             break;
933         case SDL_PIXELFORMAT_IYUV:
934             if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
935                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
936                                                        frame->data[1], frame->linesize[1],
937                                                        frame->data[2], frame->linesize[2]);
938             } else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
939                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height                    - 1), -frame->linesize[0],
940                                                        frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
941                                                        frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
942             } else {
943                 av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
944                 return -1;
945             }
946             break;
947         default:
948             if (frame->linesize[0] < 0) {
949                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
950             } else {
951                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
952             }
953             break;
954     }
955     return ret;
956 }
957
958 static void set_sdl_yuv_conversion_mode(AVFrame *frame)
959 {
960 #if SDL_VERSION_ATLEAST(2,0,8)
961     SDL_YUV_CONVERSION_MODE mode = SDL_YUV_CONVERSION_AUTOMATIC;
962     if (frame && (frame->format == AV_PIX_FMT_YUV420P || frame->format == AV_PIX_FMT_YUYV422 || frame->format == AV_PIX_FMT_UYVY422)) {
963         if (frame->color_range == AVCOL_RANGE_JPEG)
964             mode = SDL_YUV_CONVERSION_JPEG;
965         else if (frame->colorspace == AVCOL_SPC_BT709)
966             mode = SDL_YUV_CONVERSION_BT709;
967         else if (frame->colorspace == AVCOL_SPC_BT470BG || frame->colorspace == AVCOL_SPC_SMPTE170M || frame->colorspace == AVCOL_SPC_SMPTE240M)
968             mode = SDL_YUV_CONVERSION_BT601;
969     }
970     SDL_SetYUVConversionMode(mode);
971 #endif
972 }
973
974 static void video_image_display(VideoState *is)
975 {
976     Frame *vp;
977     Frame *sp = NULL;
978     SDL_Rect rect;
979
980     vp = frame_queue_peek_last(&is->pictq);
981     if (is->subtitle_st) {
982         if (frame_queue_nb_remaining(&is->subpq) > 0) {
983             sp = frame_queue_peek(&is->subpq);
984
985             if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
986                 if (!sp->uploaded) {
987                     uint8_t* pixels[4];
988                     int pitch[4];
989                     int i;
990                     if (!sp->width || !sp->height) {
991                         sp->width = vp->width;
992                         sp->height = vp->height;
993                     }
994                     if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
995                         return;
996
997                     for (i = 0; i < sp->sub.num_rects; i++) {
998                         AVSubtitleRect *sub_rect = sp->sub.rects[i];
999
1000                         sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
1001                         sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
1002                         sub_rect->w = av_clip(sub_rect->w, 0, sp->width  - sub_rect->x);
1003                         sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
1004
1005                         is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
1006                             sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
1007                             sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
1008                             0, NULL, NULL, NULL);
1009                         if (!is->sub_convert_ctx) {
1010                             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1011                             return;
1012                         }
1013                         if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
1014                             sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
1015                                       0, sub_rect->h, pixels, pitch);
1016                             SDL_UnlockTexture(is->sub_texture);
1017                         }
1018                     }
1019                     sp->uploaded = 1;
1020                 }
1021             } else
1022                 sp = NULL;
1023         }
1024     }
1025
1026     calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1027
1028     if (!vp->uploaded) {
1029         if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
1030             return;
1031         vp->uploaded = 1;
1032         vp->flip_v = vp->frame->linesize[0] < 0;
1033     }
1034
1035     set_sdl_yuv_conversion_mode(vp->frame);
1036     SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
1037     set_sdl_yuv_conversion_mode(NULL);
1038     if (sp) {
1039 #if USE_ONEPASS_SUBTITLE_RENDER
1040         SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
1041 #else
1042         int i;
1043         double xratio = (double)rect.w / (double)sp->width;
1044         double yratio = (double)rect.h / (double)sp->height;
1045         for (i = 0; i < sp->sub.num_rects; i++) {
1046             SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
1047             SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
1048                                .y = rect.y + sub_rect->y * yratio,
1049                                .w = sub_rect->w * xratio,
1050                                .h = sub_rect->h * yratio};
1051             SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
1052         }
1053 #endif
1054     }
1055 }
1056
1057 static inline int compute_mod(int a, int b)
1058 {
1059     return a < 0 ? a%b + b : a%b;
1060 }
1061
1062 static void video_audio_display(VideoState *s)
1063 {
1064     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1065     int ch, channels, h, h2;
1066     int64_t time_diff;
1067     int rdft_bits, nb_freq;
1068
1069     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1070         ;
1071     nb_freq = 1 << (rdft_bits - 1);
1072
1073     /* compute display index : center on currently output samples */
1074     channels = s->audio_tgt.channels;
1075     nb_display_channels = channels;
1076     if (!s->paused) {
1077         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1078         n = 2 * channels;
1079         delay = s->audio_write_buf_size;
1080         delay /= n;
1081
1082         /* to be more precise, we take into account the time spent since
1083            the last buffer computation */
1084         if (audio_callback_time) {
1085             time_diff = av_gettime_relative() - audio_callback_time;
1086             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1087         }
1088
1089         delay += 2 * data_used;
1090         if (delay < data_used)
1091             delay = data_used;
1092
1093         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1094         if (s->show_mode == SHOW_MODE_WAVES) {
1095             h = INT_MIN;
1096             for (i = 0; i < 1000; i += channels) {
1097                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1098                 int a = s->sample_array[idx];
1099                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1100                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1101                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1102                 int score = a - d;
1103                 if (h < score && (b ^ c) < 0) {
1104                     h = score;
1105                     i_start = idx;
1106                 }
1107             }
1108         }
1109
1110         s->last_i_start = i_start;
1111     } else {
1112         i_start = s->last_i_start;
1113     }
1114
1115     if (s->show_mode == SHOW_MODE_WAVES) {
1116         SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
1117
1118         /* total height for one channel */
1119         h = s->height / nb_display_channels;
1120         /* graph height / 2 */
1121         h2 = (h * 9) / 20;
1122         for (ch = 0; ch < nb_display_channels; ch++) {
1123             i = i_start + ch;
1124             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1125             for (x = 0; x < s->width; x++) {
1126                 y = (s->sample_array[i] * h2) >> 15;
1127                 if (y < 0) {
1128                     y = -y;
1129                     ys = y1 - y;
1130                 } else {
1131                     ys = y1;
1132                 }
1133                 fill_rectangle(s->xleft + x, ys, 1, y);
1134                 i += channels;
1135                 if (i >= SAMPLE_ARRAY_SIZE)
1136                     i -= SAMPLE_ARRAY_SIZE;
1137             }
1138         }
1139
1140         SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
1141
1142         for (ch = 1; ch < nb_display_channels; ch++) {
1143             y = s->ytop + ch * h;
1144             fill_rectangle(s->xleft, y, s->width, 1);
1145         }
1146     } else {
1147         if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
1148             return;
1149
1150         nb_display_channels= FFMIN(nb_display_channels, 2);
1151         if (rdft_bits != s->rdft_bits) {
1152             av_rdft_end(s->rdft);
1153             av_free(s->rdft_data);
1154             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1155             s->rdft_bits = rdft_bits;
1156             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1157         }
1158         if (!s->rdft || !s->rdft_data){
1159             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1160             s->show_mode = SHOW_MODE_WAVES;
1161         } else {
1162             FFTSample *data[2];
1163             SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
1164             uint32_t *pixels;
1165             int pitch;
1166             for (ch = 0; ch < nb_display_channels; ch++) {
1167                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1168                 i = i_start + ch;
1169                 for (x = 0; x < 2 * nb_freq; x++) {
1170                     double w = (x-nb_freq) * (1.0 / nb_freq);
1171                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1172                     i += channels;
1173                     if (i >= SAMPLE_ARRAY_SIZE)
1174                         i -= SAMPLE_ARRAY_SIZE;
1175                 }
1176                 av_rdft_calc(s->rdft, data[ch]);
1177             }
1178             /* Least efficient way to do this, we should of course
1179              * directly access it but it is more than fast enough. */
1180             if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
1181                 pitch >>= 2;
1182                 pixels += pitch * s->height;
1183                 for (y = 0; y < s->height; y++) {
1184                     double w = 1 / sqrt(nb_freq);
1185                     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]));
1186                     int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1187                                                         : a;
1188                     a = FFMIN(a, 255);
1189                     b = FFMIN(b, 255);
1190                     pixels -= pitch;
1191                     *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
1192                 }
1193                 SDL_UnlockTexture(s->vis_texture);
1194             }
1195             SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
1196         }
1197         if (!s->paused)
1198             s->xpos++;
1199         if (s->xpos >= s->width)
1200             s->xpos= s->xleft;
1201     }
1202 }
1203
1204 static void stream_component_close(VideoState *is, int stream_index)
1205 {
1206     AVFormatContext *ic = is->ic;
1207     AVCodecParameters *codecpar;
1208
1209     if (stream_index < 0 || stream_index >= ic->nb_streams)
1210         return;
1211     codecpar = ic->streams[stream_index]->codecpar;
1212
1213     switch (codecpar->codec_type) {
1214     case AVMEDIA_TYPE_AUDIO:
1215         decoder_abort(&is->auddec, &is->sampq);
1216         SDL_CloseAudioDevice(audio_dev);
1217         decoder_destroy(&is->auddec);
1218         swr_free(&is->swr_ctx);
1219         av_freep(&is->audio_buf1);
1220         is->audio_buf1_size = 0;
1221         is->audio_buf = NULL;
1222
1223         if (is->rdft) {
1224             av_rdft_end(is->rdft);
1225             av_freep(&is->rdft_data);
1226             is->rdft = NULL;
1227             is->rdft_bits = 0;
1228         }
1229         break;
1230     case AVMEDIA_TYPE_VIDEO:
1231         decoder_abort(&is->viddec, &is->pictq);
1232         decoder_destroy(&is->viddec);
1233         break;
1234     case AVMEDIA_TYPE_SUBTITLE:
1235         decoder_abort(&is->subdec, &is->subpq);
1236         decoder_destroy(&is->subdec);
1237         break;
1238     default:
1239         break;
1240     }
1241
1242     ic->streams[stream_index]->discard = AVDISCARD_ALL;
1243     switch (codecpar->codec_type) {
1244     case AVMEDIA_TYPE_AUDIO:
1245         is->audio_st = NULL;
1246         is->audio_stream = -1;
1247         break;
1248     case AVMEDIA_TYPE_VIDEO:
1249         is->video_st = NULL;
1250         is->video_stream = -1;
1251         break;
1252     case AVMEDIA_TYPE_SUBTITLE:
1253         is->subtitle_st = NULL;
1254         is->subtitle_stream = -1;
1255         break;
1256     default:
1257         break;
1258     }
1259 }
1260
1261 static void stream_close(VideoState *is)
1262 {
1263     /* XXX: use a special url_shutdown call to abort parse cleanly */
1264     is->abort_request = 1;
1265     SDL_WaitThread(is->read_tid, NULL);
1266
1267     /* close each stream */
1268     if (is->audio_stream >= 0)
1269         stream_component_close(is, is->audio_stream);
1270     if (is->video_stream >= 0)
1271         stream_component_close(is, is->video_stream);
1272     if (is->subtitle_stream >= 0)
1273         stream_component_close(is, is->subtitle_stream);
1274
1275     avformat_close_input(&is->ic);
1276
1277     packet_queue_destroy(&is->videoq);
1278     packet_queue_destroy(&is->audioq);
1279     packet_queue_destroy(&is->subtitleq);
1280
1281     /* free all pictures */
1282     frame_queue_destory(&is->pictq);
1283     frame_queue_destory(&is->sampq);
1284     frame_queue_destory(&is->subpq);
1285     SDL_DestroyCond(is->continue_read_thread);
1286     sws_freeContext(is->img_convert_ctx);
1287     sws_freeContext(is->sub_convert_ctx);
1288     av_free(is->filename);
1289     if (is->vis_texture)
1290         SDL_DestroyTexture(is->vis_texture);
1291     if (is->vid_texture)
1292         SDL_DestroyTexture(is->vid_texture);
1293     if (is->sub_texture)
1294         SDL_DestroyTexture(is->sub_texture);
1295     av_free(is);
1296 }
1297
1298 static void do_exit(VideoState *is)
1299 {
1300     if (is) {
1301         stream_close(is);
1302     }
1303     if (renderer)
1304         SDL_DestroyRenderer(renderer);
1305     if (window)
1306         SDL_DestroyWindow(window);
1307     uninit_opts();
1308 #if CONFIG_AVFILTER
1309     av_freep(&vfilters_list);
1310 #endif
1311     avformat_network_deinit();
1312     if (show_status)
1313         printf("\n");
1314     SDL_Quit();
1315     av_log(NULL, AV_LOG_QUIET, "%s", "");
1316     exit(0);
1317 }
1318
1319 static void sigterm_handler(int sig)
1320 {
1321     exit(123);
1322 }
1323
1324 static void set_default_window_size(int width, int height, AVRational sar)
1325 {
1326     SDL_Rect rect;
1327     int max_width  = screen_width  ? screen_width  : INT_MAX;
1328     int max_height = screen_height ? screen_height : INT_MAX;
1329     if (max_width == INT_MAX && max_height == INT_MAX)
1330         max_height = height;
1331     calculate_display_rect(&rect, 0, 0, max_width, max_height, width, height, sar);
1332     default_width  = rect.w;
1333     default_height = rect.h;
1334 }
1335
1336 static int video_open(VideoState *is)
1337 {
1338     int w,h;
1339
1340     w = screen_width ? screen_width : default_width;
1341     h = screen_height ? screen_height : default_height;
1342
1343     if (!window_title)
1344         window_title = input_filename;
1345     SDL_SetWindowTitle(window, window_title);
1346
1347     SDL_SetWindowSize(window, w, h);
1348     SDL_SetWindowPosition(window, screen_left, screen_top);
1349     if (is_full_screen)
1350         SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
1351     SDL_ShowWindow(window);
1352
1353     is->width  = w;
1354     is->height = h;
1355
1356     return 0;
1357 }
1358
1359 /* display the current picture, if any */
1360 static void video_display(VideoState *is)
1361 {
1362     if (!is->width)
1363         video_open(is);
1364
1365     SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
1366     SDL_RenderClear(renderer);
1367     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1368         video_audio_display(is);
1369     else if (is->video_st)
1370         video_image_display(is);
1371     SDL_RenderPresent(renderer);
1372 }
1373
1374 static double get_clock(Clock *c)
1375 {
1376     if (*c->queue_serial != c->serial)
1377         return NAN;
1378     if (c->paused) {
1379         return c->pts;
1380     } else {
1381         double time = av_gettime_relative() / 1000000.0;
1382         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1383     }
1384 }
1385
1386 static void set_clock_at(Clock *c, double pts, int serial, double time)
1387 {
1388     c->pts = pts;
1389     c->last_updated = time;
1390     c->pts_drift = c->pts - time;
1391     c->serial = serial;
1392 }
1393
1394 static void set_clock(Clock *c, double pts, int serial)
1395 {
1396     double time = av_gettime_relative() / 1000000.0;
1397     set_clock_at(c, pts, serial, time);
1398 }
1399
1400 static void set_clock_speed(Clock *c, double speed)
1401 {
1402     set_clock(c, get_clock(c), c->serial);
1403     c->speed = speed;
1404 }
1405
1406 static void init_clock(Clock *c, int *queue_serial)
1407 {
1408     c->speed = 1.0;
1409     c->paused = 0;
1410     c->queue_serial = queue_serial;
1411     set_clock(c, NAN, -1);
1412 }
1413
1414 static void sync_clock_to_slave(Clock *c, Clock *slave)
1415 {
1416     double clock = get_clock(c);
1417     double slave_clock = get_clock(slave);
1418     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1419         set_clock(c, slave_clock, slave->serial);
1420 }
1421
1422 static int get_master_sync_type(VideoState *is) {
1423     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1424         if (is->video_st)
1425             return AV_SYNC_VIDEO_MASTER;
1426         else
1427             return AV_SYNC_AUDIO_MASTER;
1428     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1429         if (is->audio_st)
1430             return AV_SYNC_AUDIO_MASTER;
1431         else
1432             return AV_SYNC_EXTERNAL_CLOCK;
1433     } else {
1434         return AV_SYNC_EXTERNAL_CLOCK;
1435     }
1436 }
1437
1438 /* get the current master clock value */
1439 static double get_master_clock(VideoState *is)
1440 {
1441     double val;
1442
1443     switch (get_master_sync_type(is)) {
1444         case AV_SYNC_VIDEO_MASTER:
1445             val = get_clock(&is->vidclk);
1446             break;
1447         case AV_SYNC_AUDIO_MASTER:
1448             val = get_clock(&is->audclk);
1449             break;
1450         default:
1451             val = get_clock(&is->extclk);
1452             break;
1453     }
1454     return val;
1455 }
1456
1457 static void check_external_clock_speed(VideoState *is) {
1458    if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
1459        is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
1460        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1461    } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
1462               (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
1463        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1464    } else {
1465        double speed = is->extclk.speed;
1466        if (speed != 1.0)
1467            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1468    }
1469 }
1470
1471 /* seek in the stream */
1472 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1473 {
1474     if (!is->seek_req) {
1475         is->seek_pos = pos;
1476         is->seek_rel = rel;
1477         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1478         if (seek_by_bytes)
1479             is->seek_flags |= AVSEEK_FLAG_BYTE;
1480         is->seek_req = 1;
1481         SDL_CondSignal(is->continue_read_thread);
1482     }
1483 }
1484
1485 /* pause or resume the video */
1486 static void stream_toggle_pause(VideoState *is)
1487 {
1488     if (is->paused) {
1489         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1490         if (is->read_pause_return != AVERROR(ENOSYS)) {
1491             is->vidclk.paused = 0;
1492         }
1493         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1494     }
1495     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1496     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1497 }
1498
1499 static void toggle_pause(VideoState *is)
1500 {
1501     stream_toggle_pause(is);
1502     is->step = 0;
1503 }
1504
1505 static void toggle_mute(VideoState *is)
1506 {
1507     is->muted = !is->muted;
1508 }
1509
1510 static void update_volume(VideoState *is, int sign, double step)
1511 {
1512     double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
1513     int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
1514     is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
1515 }
1516
1517 static void step_to_next_frame(VideoState *is)
1518 {
1519     /* if the stream is paused unpause it, then step */
1520     if (is->paused)
1521         stream_toggle_pause(is);
1522     is->step = 1;
1523 }
1524
1525 static double compute_target_delay(double delay, VideoState *is)
1526 {
1527     double sync_threshold, diff = 0;
1528
1529     /* update delay to follow master synchronisation source */
1530     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1531         /* if video is slave, we try to correct big delays by
1532            duplicating or deleting a frame */
1533         diff = get_clock(&is->vidclk) - get_master_clock(is);
1534
1535         /* skip or repeat frame. We take into account the
1536            delay to compute the threshold. I still don't know
1537            if it is the best guess */
1538         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1539         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1540             if (diff <= -sync_threshold)
1541                 delay = FFMAX(0, delay + diff);
1542             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1543                 delay = delay + diff;
1544             else if (diff >= sync_threshold)
1545                 delay = 2 * delay;
1546         }
1547     }
1548
1549     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1550             delay, -diff);
1551
1552     return delay;
1553 }
1554
1555 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1556     if (vp->serial == nextvp->serial) {
1557         double duration = nextvp->pts - vp->pts;
1558         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1559             return vp->duration;
1560         else
1561             return duration;
1562     } else {
1563         return 0.0;
1564     }
1565 }
1566
1567 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1568     /* update current video pts */
1569     set_clock(&is->vidclk, pts, serial);
1570     sync_clock_to_slave(&is->extclk, &is->vidclk);
1571 }
1572
1573 /* called to display each frame */
1574 static void video_refresh(void *opaque, double *remaining_time)
1575 {
1576     VideoState *is = opaque;
1577     double time;
1578
1579     Frame *sp, *sp2;
1580
1581     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1582         check_external_clock_speed(is);
1583
1584     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1585         time = av_gettime_relative() / 1000000.0;
1586         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1587             video_display(is);
1588             is->last_vis_time = time;
1589         }
1590         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1591     }
1592
1593     if (is->video_st) {
1594 retry:
1595         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1596             // nothing to do, no picture to display in the queue
1597         } else {
1598             double last_duration, duration, delay;
1599             Frame *vp, *lastvp;
1600
1601             /* dequeue the picture */
1602             lastvp = frame_queue_peek_last(&is->pictq);
1603             vp = frame_queue_peek(&is->pictq);
1604
1605             if (vp->serial != is->videoq.serial) {
1606                 frame_queue_next(&is->pictq);
1607                 goto retry;
1608             }
1609
1610             if (lastvp->serial != vp->serial)
1611                 is->frame_timer = av_gettime_relative() / 1000000.0;
1612
1613             if (is->paused)
1614                 goto display;
1615
1616             /* compute nominal last_duration */
1617             last_duration = vp_duration(is, lastvp, vp);
1618             delay = compute_target_delay(last_duration, is);
1619
1620             time= av_gettime_relative()/1000000.0;
1621             if (time < is->frame_timer + delay) {
1622                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1623                 goto display;
1624             }
1625
1626             is->frame_timer += delay;
1627             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1628                 is->frame_timer = time;
1629
1630             SDL_LockMutex(is->pictq.mutex);
1631             if (!isnan(vp->pts))
1632                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1633             SDL_UnlockMutex(is->pictq.mutex);
1634
1635             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1636                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1637                 duration = vp_duration(is, vp, nextvp);
1638                 if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1639                     is->frame_drops_late++;
1640                     frame_queue_next(&is->pictq);
1641                     goto retry;
1642                 }
1643             }
1644
1645             if (is->subtitle_st) {
1646                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1647                         sp = frame_queue_peek(&is->subpq);
1648
1649                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1650                             sp2 = frame_queue_peek_next(&is->subpq);
1651                         else
1652                             sp2 = NULL;
1653
1654                         if (sp->serial != is->subtitleq.serial
1655                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1656                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1657                         {
1658                             if (sp->uploaded) {
1659                                 int i;
1660                                 for (i = 0; i < sp->sub.num_rects; i++) {
1661                                     AVSubtitleRect *sub_rect = sp->sub.rects[i];
1662                                     uint8_t *pixels;
1663                                     int pitch, j;
1664
1665                                     if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
1666                                         for (j = 0; j < sub_rect->h; j++, pixels += pitch)
1667                                             memset(pixels, 0, sub_rect->w << 2);
1668                                         SDL_UnlockTexture(is->sub_texture);
1669                                     }
1670                                 }
1671                             }
1672                             frame_queue_next(&is->subpq);
1673                         } else {
1674                             break;
1675                         }
1676                     }
1677             }
1678
1679             frame_queue_next(&is->pictq);
1680             is->force_refresh = 1;
1681
1682             if (is->step && !is->paused)
1683                 stream_toggle_pause(is);
1684         }
1685 display:
1686         /* display picture */
1687         if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
1688             video_display(is);
1689     }
1690     is->force_refresh = 0;
1691     if (show_status) {
1692         static int64_t last_time;
1693         int64_t cur_time;
1694         int aqsize, vqsize, sqsize;
1695         double av_diff;
1696
1697         cur_time = av_gettime_relative();
1698         if (!last_time || (cur_time - last_time) >= 30000) {
1699             aqsize = 0;
1700             vqsize = 0;
1701             sqsize = 0;
1702             if (is->audio_st)
1703                 aqsize = is->audioq.size;
1704             if (is->video_st)
1705                 vqsize = is->videoq.size;
1706             if (is->subtitle_st)
1707                 sqsize = is->subtitleq.size;
1708             av_diff = 0;
1709             if (is->audio_st && is->video_st)
1710                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1711             else if (is->video_st)
1712                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1713             else if (is->audio_st)
1714                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1715             av_log(NULL, AV_LOG_INFO,
1716                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1717                    get_master_clock(is),
1718                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1719                    av_diff,
1720                    is->frame_drops_early + is->frame_drops_late,
1721                    aqsize / 1024,
1722                    vqsize / 1024,
1723                    sqsize,
1724                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
1725                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
1726             fflush(stdout);
1727             last_time = cur_time;
1728         }
1729     }
1730 }
1731
1732 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1733 {
1734     Frame *vp;
1735
1736 #if defined(DEBUG_SYNC)
1737     printf("frame_type=%c pts=%0.3f\n",
1738            av_get_picture_type_char(src_frame->pict_type), pts);
1739 #endif
1740
1741     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1742         return -1;
1743
1744     vp->sar = src_frame->sample_aspect_ratio;
1745     vp->uploaded = 0;
1746
1747     vp->width = src_frame->width;
1748     vp->height = src_frame->height;
1749     vp->format = src_frame->format;
1750
1751     vp->pts = pts;
1752     vp->duration = duration;
1753     vp->pos = pos;
1754     vp->serial = serial;
1755
1756     set_default_window_size(vp->width, vp->height, vp->sar);
1757
1758     av_frame_move_ref(vp->frame, src_frame);
1759     frame_queue_push(&is->pictq);
1760     return 0;
1761 }
1762
1763 static int get_video_frame(VideoState *is, AVFrame *frame)
1764 {
1765     int got_picture;
1766
1767     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1768         return -1;
1769
1770     if (got_picture) {
1771         double dpts = NAN;
1772
1773         if (frame->pts != AV_NOPTS_VALUE)
1774             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1775
1776         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1777
1778         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1779             if (frame->pts != AV_NOPTS_VALUE) {
1780                 double diff = dpts - get_master_clock(is);
1781                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1782                     diff - is->frame_last_filter_delay < 0 &&
1783                     is->viddec.pkt_serial == is->vidclk.serial &&
1784                     is->videoq.nb_packets) {
1785                     is->frame_drops_early++;
1786                     av_frame_unref(frame);
1787                     got_picture = 0;
1788                 }
1789             }
1790         }
1791     }
1792
1793     return got_picture;
1794 }
1795
1796 #if CONFIG_AVFILTER
1797 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1798                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1799 {
1800     int ret, i;
1801     int nb_filters = graph->nb_filters;
1802     AVFilterInOut *outputs = NULL, *inputs = NULL;
1803
1804     if (filtergraph) {
1805         outputs = avfilter_inout_alloc();
1806         inputs  = avfilter_inout_alloc();
1807         if (!outputs || !inputs) {
1808             ret = AVERROR(ENOMEM);
1809             goto fail;
1810         }
1811
1812         outputs->name       = av_strdup("in");
1813         outputs->filter_ctx = source_ctx;
1814         outputs->pad_idx    = 0;
1815         outputs->next       = NULL;
1816
1817         inputs->name        = av_strdup("out");
1818         inputs->filter_ctx  = sink_ctx;
1819         inputs->pad_idx     = 0;
1820         inputs->next        = NULL;
1821
1822         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1823             goto fail;
1824     } else {
1825         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1826             goto fail;
1827     }
1828
1829     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1830     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1831         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1832
1833     ret = avfilter_graph_config(graph, NULL);
1834 fail:
1835     avfilter_inout_free(&outputs);
1836     avfilter_inout_free(&inputs);
1837     return ret;
1838 }
1839
1840 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1841 {
1842     enum AVPixelFormat pix_fmts[FF_ARRAY_ELEMS(sdl_texture_format_map)];
1843     char sws_flags_str[512] = "";
1844     char buffersrc_args[256];
1845     int ret;
1846     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1847     AVCodecParameters *codecpar = is->video_st->codecpar;
1848     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1849     AVDictionaryEntry *e = NULL;
1850     int nb_pix_fmts = 0;
1851     int i, j;
1852
1853     for (i = 0; i < renderer_info.num_texture_formats; i++) {
1854         for (j = 0; j < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; j++) {
1855             if (renderer_info.texture_formats[i] == sdl_texture_format_map[j].texture_fmt) {
1856                 pix_fmts[nb_pix_fmts++] = sdl_texture_format_map[j].format;
1857                 break;
1858             }
1859         }
1860     }
1861     pix_fmts[nb_pix_fmts] = AV_PIX_FMT_NONE;
1862
1863     while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
1864         if (!strcmp(e->key, "sws_flags")) {
1865             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
1866         } else
1867             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
1868     }
1869     if (strlen(sws_flags_str))
1870         sws_flags_str[strlen(sws_flags_str)-1] = '\0';
1871
1872     graph->scale_sws_opts = av_strdup(sws_flags_str);
1873
1874     snprintf(buffersrc_args, sizeof(buffersrc_args),
1875              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1876              frame->width, frame->height, frame->format,
1877              is->video_st->time_base.num, is->video_st->time_base.den,
1878              codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
1879     if (fr.num && fr.den)
1880         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1881
1882     if ((ret = avfilter_graph_create_filter(&filt_src,
1883                                             avfilter_get_by_name("buffer"),
1884                                             "ffplay_buffer", buffersrc_args, NULL,
1885                                             graph)) < 0)
1886         goto fail;
1887
1888     ret = avfilter_graph_create_filter(&filt_out,
1889                                        avfilter_get_by_name("buffersink"),
1890                                        "ffplay_buffersink", NULL, NULL, graph);
1891     if (ret < 0)
1892         goto fail;
1893
1894     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1895         goto fail;
1896
1897     last_filter = filt_out;
1898
1899 /* Note: this macro adds a filter before the lastly added filter, so the
1900  * processing order of the filters is in reverse */
1901 #define INSERT_FILT(name, arg) do {                                          \
1902     AVFilterContext *filt_ctx;                                               \
1903                                                                              \
1904     ret = avfilter_graph_create_filter(&filt_ctx,                            \
1905                                        avfilter_get_by_name(name),           \
1906                                        "ffplay_" name, arg, NULL, graph);    \
1907     if (ret < 0)                                                             \
1908         goto fail;                                                           \
1909                                                                              \
1910     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
1911     if (ret < 0)                                                             \
1912         goto fail;                                                           \
1913                                                                              \
1914     last_filter = filt_ctx;                                                  \
1915 } while (0)
1916
1917     if (autorotate) {
1918         double theta  = get_rotation(is->video_st);
1919
1920         if (fabs(theta - 90) < 1.0) {
1921             INSERT_FILT("transpose", "clock");
1922         } else if (fabs(theta - 180) < 1.0) {
1923             INSERT_FILT("hflip", NULL);
1924             INSERT_FILT("vflip", NULL);
1925         } else if (fabs(theta - 270) < 1.0) {
1926             INSERT_FILT("transpose", "cclock");
1927         } else if (fabs(theta) > 1.0) {
1928             char rotate_buf[64];
1929             snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
1930             INSERT_FILT("rotate", rotate_buf);
1931         }
1932     }
1933
1934     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1935         goto fail;
1936
1937     is->in_video_filter  = filt_src;
1938     is->out_video_filter = filt_out;
1939
1940 fail:
1941     return ret;
1942 }
1943
1944 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1945 {
1946     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1947     int sample_rates[2] = { 0, -1 };
1948     int64_t channel_layouts[2] = { 0, -1 };
1949     int channels[2] = { 0, -1 };
1950     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1951     char aresample_swr_opts[512] = "";
1952     AVDictionaryEntry *e = NULL;
1953     char asrc_args[256];
1954     int ret;
1955
1956     avfilter_graph_free(&is->agraph);
1957     if (!(is->agraph = avfilter_graph_alloc()))
1958         return AVERROR(ENOMEM);
1959     is->agraph->nb_threads = filter_nbthreads;
1960
1961     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1962         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1963     if (strlen(aresample_swr_opts))
1964         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1965     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1966
1967     ret = snprintf(asrc_args, sizeof(asrc_args),
1968                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1969                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1970                    is->audio_filter_src.channels,
1971                    1, is->audio_filter_src.freq);
1972     if (is->audio_filter_src.channel_layout)
1973         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1974                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1975
1976     ret = avfilter_graph_create_filter(&filt_asrc,
1977                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1978                                        asrc_args, NULL, is->agraph);
1979     if (ret < 0)
1980         goto end;
1981
1982
1983     ret = avfilter_graph_create_filter(&filt_asink,
1984                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1985                                        NULL, NULL, is->agraph);
1986     if (ret < 0)
1987         goto end;
1988
1989     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1990         goto end;
1991     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1992         goto end;
1993
1994     if (force_output_format) {
1995         channel_layouts[0] = is->audio_tgt.channel_layout;
1996         channels       [0] = is->audio_tgt.channels;
1997         sample_rates   [0] = is->audio_tgt.freq;
1998         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1999             goto end;
2000         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2001             goto end;
2002         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2003             goto end;
2004         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2005             goto end;
2006     }
2007
2008
2009     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2010         goto end;
2011
2012     is->in_audio_filter  = filt_asrc;
2013     is->out_audio_filter = filt_asink;
2014
2015 end:
2016     if (ret < 0)
2017         avfilter_graph_free(&is->agraph);
2018     return ret;
2019 }
2020 #endif  /* CONFIG_AVFILTER */
2021
2022 static int audio_thread(void *arg)
2023 {
2024     VideoState *is = arg;
2025     AVFrame *frame = av_frame_alloc();
2026     Frame *af;
2027 #if CONFIG_AVFILTER
2028     int last_serial = -1;
2029     int64_t dec_channel_layout;
2030     int reconfigure;
2031 #endif
2032     int got_frame = 0;
2033     AVRational tb;
2034     int ret = 0;
2035
2036     if (!frame)
2037         return AVERROR(ENOMEM);
2038
2039     do {
2040         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2041             goto the_end;
2042
2043         if (got_frame) {
2044                 tb = (AVRational){1, frame->sample_rate};
2045
2046 #if CONFIG_AVFILTER
2047                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
2048
2049                 reconfigure =
2050                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2051                                    frame->format, frame->channels)    ||
2052                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2053                     is->audio_filter_src.freq           != frame->sample_rate ||
2054                     is->auddec.pkt_serial               != last_serial;
2055
2056                 if (reconfigure) {
2057                     char buf1[1024], buf2[1024];
2058                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2059                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2060                     av_log(NULL, AV_LOG_DEBUG,
2061                            "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",
2062                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2063                            frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2064
2065                     is->audio_filter_src.fmt            = frame->format;
2066                     is->audio_filter_src.channels       = frame->channels;
2067                     is->audio_filter_src.channel_layout = dec_channel_layout;
2068                     is->audio_filter_src.freq           = frame->sample_rate;
2069                     last_serial                         = is->auddec.pkt_serial;
2070
2071                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2072                         goto the_end;
2073                 }
2074
2075             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2076                 goto the_end;
2077
2078             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2079                 tb = av_buffersink_get_time_base(is->out_audio_filter);
2080 #endif
2081                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2082                     goto the_end;
2083
2084                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2085                 af->pos = frame->pkt_pos;
2086                 af->serial = is->auddec.pkt_serial;
2087                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2088
2089                 av_frame_move_ref(af->frame, frame);
2090                 frame_queue_push(&is->sampq);
2091
2092 #if CONFIG_AVFILTER
2093                 if (is->audioq.serial != is->auddec.pkt_serial)
2094                     break;
2095             }
2096             if (ret == AVERROR_EOF)
2097                 is->auddec.finished = is->auddec.pkt_serial;
2098 #endif
2099         }
2100     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2101  the_end:
2102 #if CONFIG_AVFILTER
2103     avfilter_graph_free(&is->agraph);
2104 #endif
2105     av_frame_free(&frame);
2106     return ret;
2107 }
2108
2109 static int decoder_start(Decoder *d, int (*fn)(void *), const char *thread_name, void* arg)
2110 {
2111     packet_queue_start(d->queue);
2112     d->decoder_tid = SDL_CreateThread(fn, thread_name, arg);
2113     if (!d->decoder_tid) {
2114         av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2115         return AVERROR(ENOMEM);
2116     }
2117     return 0;
2118 }
2119
2120 static int video_thread(void *arg)
2121 {
2122     VideoState *is = arg;
2123     AVFrame *frame = av_frame_alloc();
2124     double pts;
2125     double duration;
2126     int ret;
2127     AVRational tb = is->video_st->time_base;
2128     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2129
2130 #if CONFIG_AVFILTER
2131     AVFilterGraph *graph = NULL;
2132     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2133     int last_w = 0;
2134     int last_h = 0;
2135     enum AVPixelFormat last_format = -2;
2136     int last_serial = -1;
2137     int last_vfilter_idx = 0;
2138 #endif
2139
2140     if (!frame)
2141         return AVERROR(ENOMEM);
2142
2143     for (;;) {
2144         ret = get_video_frame(is, frame);
2145         if (ret < 0)
2146             goto the_end;
2147         if (!ret)
2148             continue;
2149
2150 #if CONFIG_AVFILTER
2151         if (   last_w != frame->width
2152             || last_h != frame->height
2153             || last_format != frame->format
2154             || last_serial != is->viddec.pkt_serial
2155             || last_vfilter_idx != is->vfilter_idx) {
2156             av_log(NULL, AV_LOG_DEBUG,
2157                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2158                    last_w, last_h,
2159                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2160                    frame->width, frame->height,
2161                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2162             avfilter_graph_free(&graph);
2163             graph = avfilter_graph_alloc();
2164             if (!graph) {
2165                 ret = AVERROR(ENOMEM);
2166                 goto the_end;
2167             }
2168             graph->nb_threads = filter_nbthreads;
2169             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2170                 SDL_Event event;
2171                 event.type = FF_QUIT_EVENT;
2172                 event.user.data1 = is;
2173                 SDL_PushEvent(&event);
2174                 goto the_end;
2175             }
2176             filt_in  = is->in_video_filter;
2177             filt_out = is->out_video_filter;
2178             last_w = frame->width;
2179             last_h = frame->height;
2180             last_format = frame->format;
2181             last_serial = is->viddec.pkt_serial;
2182             last_vfilter_idx = is->vfilter_idx;
2183             frame_rate = av_buffersink_get_frame_rate(filt_out);
2184         }
2185
2186         ret = av_buffersrc_add_frame(filt_in, frame);
2187         if (ret < 0)
2188             goto the_end;
2189
2190         while (ret >= 0) {
2191             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2192
2193             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2194             if (ret < 0) {
2195                 if (ret == AVERROR_EOF)
2196                     is->viddec.finished = is->viddec.pkt_serial;
2197                 ret = 0;
2198                 break;
2199             }
2200
2201             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2202             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2203                 is->frame_last_filter_delay = 0;
2204             tb = av_buffersink_get_time_base(filt_out);
2205 #endif
2206             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2207             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2208             ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
2209             av_frame_unref(frame);
2210 #if CONFIG_AVFILTER
2211             if (is->videoq.serial != is->viddec.pkt_serial)
2212                 break;
2213         }
2214 #endif
2215
2216         if (ret < 0)
2217             goto the_end;
2218     }
2219  the_end:
2220 #if CONFIG_AVFILTER
2221     avfilter_graph_free(&graph);
2222 #endif
2223     av_frame_free(&frame);
2224     return 0;
2225 }
2226
2227 static int subtitle_thread(void *arg)
2228 {
2229     VideoState *is = arg;
2230     Frame *sp;
2231     int got_subtitle;
2232     double pts;
2233
2234     for (;;) {
2235         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2236             return 0;
2237
2238         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2239             break;
2240
2241         pts = 0;
2242
2243         if (got_subtitle && sp->sub.format == 0) {
2244             if (sp->sub.pts != AV_NOPTS_VALUE)
2245                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2246             sp->pts = pts;
2247             sp->serial = is->subdec.pkt_serial;
2248             sp->width = is->subdec.avctx->width;
2249             sp->height = is->subdec.avctx->height;
2250             sp->uploaded = 0;
2251
2252             /* now we can update the picture count */
2253             frame_queue_push(&is->subpq);
2254         } else if (got_subtitle) {
2255             avsubtitle_free(&sp->sub);
2256         }
2257     }
2258     return 0;
2259 }
2260
2261 /* copy samples for viewing in editor window */
2262 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2263 {
2264     int size, len;
2265
2266     size = samples_size / sizeof(short);
2267     while (size > 0) {
2268         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2269         if (len > size)
2270             len = size;
2271         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2272         samples += len;
2273         is->sample_array_index += len;
2274         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2275             is->sample_array_index = 0;
2276         size -= len;
2277     }
2278 }
2279
2280 /* return the wanted number of samples to get better sync if sync_type is video
2281  * or external master clock */
2282 static int synchronize_audio(VideoState *is, int nb_samples)
2283 {
2284     int wanted_nb_samples = nb_samples;
2285
2286     /* if not master, then we try to remove or add samples to correct the clock */
2287     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2288         double diff, avg_diff;
2289         int min_nb_samples, max_nb_samples;
2290
2291         diff = get_clock(&is->audclk) - get_master_clock(is);
2292
2293         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2294             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2295             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2296                 /* not enough measures to have a correct estimate */
2297                 is->audio_diff_avg_count++;
2298             } else {
2299                 /* estimate the A-V difference */
2300                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2301
2302                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2303                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2304                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2305                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2306                     wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2307                 }
2308                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2309                         diff, avg_diff, wanted_nb_samples - nb_samples,
2310                         is->audio_clock, is->audio_diff_threshold);
2311             }
2312         } else {
2313             /* too big difference : may be initial PTS errors, so
2314                reset A-V filter */
2315             is->audio_diff_avg_count = 0;
2316             is->audio_diff_cum       = 0;
2317         }
2318     }
2319
2320     return wanted_nb_samples;
2321 }
2322
2323 /**
2324  * Decode one audio frame and return its uncompressed size.
2325  *
2326  * The processed audio frame is decoded, converted if required, and
2327  * stored in is->audio_buf, with size in bytes given by the return
2328  * value.
2329  */
2330 static int audio_decode_frame(VideoState *is)
2331 {
2332     int data_size, resampled_data_size;
2333     int64_t dec_channel_layout;
2334     av_unused double audio_clock0;
2335     int wanted_nb_samples;
2336     Frame *af;
2337
2338     if (is->paused)
2339         return -1;
2340
2341     do {
2342 #if defined(_WIN32)
2343         while (frame_queue_nb_remaining(&is->sampq) == 0) {
2344             if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2345                 return -1;
2346             av_usleep (1000);
2347         }
2348 #endif
2349         if (!(af = frame_queue_peek_readable(&is->sampq)))
2350             return -1;
2351         frame_queue_next(&is->sampq);
2352     } while (af->serial != is->audioq.serial);
2353
2354     data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
2355                                            af->frame->nb_samples,
2356                                            af->frame->format, 1);
2357
2358     dec_channel_layout =
2359         (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2360         af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
2361     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2362
2363     if (af->frame->format        != is->audio_src.fmt            ||
2364         dec_channel_layout       != is->audio_src.channel_layout ||
2365         af->frame->sample_rate   != is->audio_src.freq           ||
2366         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2367         swr_free(&is->swr_ctx);
2368         is->swr_ctx = swr_alloc_set_opts(NULL,
2369                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2370                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2371                                          0, NULL);
2372         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2373             av_log(NULL, AV_LOG_ERROR,
2374                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2375                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
2376                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2377             swr_free(&is->swr_ctx);
2378             return -1;
2379         }
2380         is->audio_src.channel_layout = dec_channel_layout;
2381         is->audio_src.channels       = af->frame->channels;
2382         is->audio_src.freq = af->frame->sample_rate;
2383         is->audio_src.fmt = af->frame->format;
2384     }
2385
2386     if (is->swr_ctx) {
2387         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2388         uint8_t **out = &is->audio_buf1;
2389         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2390         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2391         int len2;
2392         if (out_size < 0) {
2393             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2394             return -1;
2395         }
2396         if (wanted_nb_samples != af->frame->nb_samples) {
2397             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2398                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2399                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2400                 return -1;
2401             }
2402         }
2403         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2404         if (!is->audio_buf1)
2405             return AVERROR(ENOMEM);
2406         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2407         if (len2 < 0) {
2408             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2409             return -1;
2410         }
2411         if (len2 == out_count) {
2412             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2413             if (swr_init(is->swr_ctx) < 0)
2414                 swr_free(&is->swr_ctx);
2415         }
2416         is->audio_buf = is->audio_buf1;
2417         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2418     } else {
2419         is->audio_buf = af->frame->data[0];
2420         resampled_data_size = data_size;
2421     }
2422
2423     audio_clock0 = is->audio_clock;
2424     /* update the audio clock with the pts */
2425     if (!isnan(af->pts))
2426         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2427     else
2428         is->audio_clock = NAN;
2429     is->audio_clock_serial = af->serial;
2430 #ifdef DEBUG
2431     {
2432         static double last_clock;
2433         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2434                is->audio_clock - last_clock,
2435                is->audio_clock, audio_clock0);
2436         last_clock = is->audio_clock;
2437     }
2438 #endif
2439     return resampled_data_size;
2440 }
2441
2442 /* prepare a new audio buffer */
2443 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2444 {
2445     VideoState *is = opaque;
2446     int audio_size, len1;
2447
2448     audio_callback_time = av_gettime_relative();
2449
2450     while (len > 0) {
2451         if (is->audio_buf_index >= is->audio_buf_size) {
2452            audio_size = audio_decode_frame(is);
2453            if (audio_size < 0) {
2454                 /* if error, just output silence */
2455                is->audio_buf = NULL;
2456                is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2457            } else {
2458                if (is->show_mode != SHOW_MODE_VIDEO)
2459                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2460                is->audio_buf_size = audio_size;
2461            }
2462            is->audio_buf_index = 0;
2463         }
2464         len1 = is->audio_buf_size - is->audio_buf_index;
2465         if (len1 > len)
2466             len1 = len;
2467         if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
2468             memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2469         else {
2470             memset(stream, 0, len1);
2471             if (!is->muted && is->audio_buf)
2472                 SDL_MixAudioFormat(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, AUDIO_S16SYS, len1, is->audio_volume);
2473         }
2474         len -= len1;
2475         stream += len1;
2476         is->audio_buf_index += len1;
2477     }
2478     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2479     /* Let's assume the audio driver that is used by SDL has two periods. */
2480     if (!isnan(is->audio_clock)) {
2481         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);
2482         sync_clock_to_slave(&is->extclk, &is->audclk);
2483     }
2484 }
2485
2486 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2487 {
2488     SDL_AudioSpec wanted_spec, spec;
2489     const char *env;
2490     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2491     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2492     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2493
2494     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2495     if (env) {
2496         wanted_nb_channels = atoi(env);
2497         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2498     }
2499     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2500         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2501         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2502     }
2503     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2504     wanted_spec.channels = wanted_nb_channels;
2505     wanted_spec.freq = wanted_sample_rate;
2506     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2507         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2508         return -1;
2509     }
2510     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2511         next_sample_rate_idx--;
2512     wanted_spec.format = AUDIO_S16SYS;
2513     wanted_spec.silence = 0;
2514     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2515     wanted_spec.callback = sdl_audio_callback;
2516     wanted_spec.userdata = opaque;
2517     while (!(audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &spec, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE))) {
2518         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2519                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2520         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2521         if (!wanted_spec.channels) {
2522             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2523             wanted_spec.channels = wanted_nb_channels;
2524             if (!wanted_spec.freq) {
2525                 av_log(NULL, AV_LOG_ERROR,
2526                        "No more combinations to try, audio open failed\n");
2527                 return -1;
2528             }
2529         }
2530         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2531     }
2532     if (spec.format != AUDIO_S16SYS) {
2533         av_log(NULL, AV_LOG_ERROR,
2534                "SDL advised audio format %d is not supported!\n", spec.format);
2535         return -1;
2536     }
2537     if (spec.channels != wanted_spec.channels) {
2538         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2539         if (!wanted_channel_layout) {
2540             av_log(NULL, AV_LOG_ERROR,
2541                    "SDL advised channel count %d is not supported!\n", spec.channels);
2542             return -1;
2543         }
2544     }
2545
2546     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2547     audio_hw_params->freq = spec.freq;
2548     audio_hw_params->channel_layout = wanted_channel_layout;
2549     audio_hw_params->channels =  spec.channels;
2550     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2551     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);
2552     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2553         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2554         return -1;
2555     }
2556     return spec.size;
2557 }
2558
2559 /* open a given stream. Return 0 if OK */
2560 static int stream_component_open(VideoState *is, int stream_index)
2561 {
2562     AVFormatContext *ic = is->ic;
2563     AVCodecContext *avctx;
2564     AVCodec *codec;
2565     const char *forced_codec_name = NULL;
2566     AVDictionary *opts = NULL;
2567     AVDictionaryEntry *t = NULL;
2568     int sample_rate, nb_channels;
2569     int64_t channel_layout;
2570     int ret = 0;
2571     int stream_lowres = lowres;
2572
2573     if (stream_index < 0 || stream_index >= ic->nb_streams)
2574         return -1;
2575
2576     avctx = avcodec_alloc_context3(NULL);
2577     if (!avctx)
2578         return AVERROR(ENOMEM);
2579
2580     ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
2581     if (ret < 0)
2582         goto fail;
2583     avctx->pkt_timebase = ic->streams[stream_index]->time_base;
2584
2585     codec = avcodec_find_decoder(avctx->codec_id);
2586
2587     switch(avctx->codec_type){
2588         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2589         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2590         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2591     }
2592     if (forced_codec_name)
2593         codec = avcodec_find_decoder_by_name(forced_codec_name);
2594     if (!codec) {
2595         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2596                                       "No codec could be found with name '%s'\n", forced_codec_name);
2597         else                   av_log(NULL, AV_LOG_WARNING,
2598                                       "No decoder could be found for codec %s\n", avcodec_get_name(avctx->codec_id));
2599         ret = AVERROR(EINVAL);
2600         goto fail;
2601     }
2602
2603     avctx->codec_id = codec->id;
2604     if (stream_lowres > codec->max_lowres) {
2605         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2606                 codec->max_lowres);
2607         stream_lowres = codec->max_lowres;
2608     }
2609     avctx->lowres = stream_lowres;
2610
2611     if (fast)
2612         avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2613
2614     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2615     if (!av_dict_get(opts, "threads", NULL, 0))
2616         av_dict_set(&opts, "threads", "auto", 0);
2617     if (stream_lowres)
2618         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2619     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2620         av_dict_set(&opts, "refcounted_frames", "1", 0);
2621     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2622         goto fail;
2623     }
2624     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2625         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2626         ret =  AVERROR_OPTION_NOT_FOUND;
2627         goto fail;
2628     }
2629
2630     is->eof = 0;
2631     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2632     switch (avctx->codec_type) {
2633     case AVMEDIA_TYPE_AUDIO:
2634 #if CONFIG_AVFILTER
2635         {
2636             AVFilterContext *sink;
2637
2638             is->audio_filter_src.freq           = avctx->sample_rate;
2639             is->audio_filter_src.channels       = avctx->channels;
2640             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2641             is->audio_filter_src.fmt            = avctx->sample_fmt;
2642             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2643                 goto fail;
2644             sink = is->out_audio_filter;
2645             sample_rate    = av_buffersink_get_sample_rate(sink);
2646             nb_channels    = av_buffersink_get_channels(sink);
2647             channel_layout = av_buffersink_get_channel_layout(sink);
2648         }
2649 #else
2650         sample_rate    = avctx->sample_rate;
2651         nb_channels    = avctx->channels;
2652         channel_layout = avctx->channel_layout;
2653 #endif
2654
2655         /* prepare audio output */
2656         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2657             goto fail;
2658         is->audio_hw_buf_size = ret;
2659         is->audio_src = is->audio_tgt;
2660         is->audio_buf_size  = 0;
2661         is->audio_buf_index = 0;
2662
2663         /* init averaging filter */
2664         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2665         is->audio_diff_avg_count = 0;
2666         /* since we do not have a precise anough audio FIFO fullness,
2667            we correct audio sync only if larger than this threshold */
2668         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2669
2670         is->audio_stream = stream_index;
2671         is->audio_st = ic->streams[stream_index];
2672
2673         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2674         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2675             is->auddec.start_pts = is->audio_st->start_time;
2676             is->auddec.start_pts_tb = is->audio_st->time_base;
2677         }
2678         if ((ret = decoder_start(&is->auddec, audio_thread, "audio_decoder", is)) < 0)
2679             goto out;
2680         SDL_PauseAudioDevice(audio_dev, 0);
2681         break;
2682     case AVMEDIA_TYPE_VIDEO:
2683         is->video_stream = stream_index;
2684         is->video_st = ic->streams[stream_index];
2685
2686         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2687         if ((ret = decoder_start(&is->viddec, video_thread, "video_decoder", is)) < 0)
2688             goto out;
2689         is->queue_attachments_req = 1;
2690         break;
2691     case AVMEDIA_TYPE_SUBTITLE:
2692         is->subtitle_stream = stream_index;
2693         is->subtitle_st = ic->streams[stream_index];
2694
2695         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2696         if ((ret = decoder_start(&is->subdec, subtitle_thread, "subtitle_decoder", is)) < 0)
2697             goto out;
2698         break;
2699     default:
2700         break;
2701     }
2702     goto out;
2703
2704 fail:
2705     avcodec_free_context(&avctx);
2706 out:
2707     av_dict_free(&opts);
2708
2709     return ret;
2710 }
2711
2712 static int decode_interrupt_cb(void *ctx)
2713 {
2714     VideoState *is = ctx;
2715     return is->abort_request;
2716 }
2717
2718 static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
2719     return stream_id < 0 ||
2720            queue->abort_request ||
2721            (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
2722            queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
2723 }
2724
2725 static int is_realtime(AVFormatContext *s)
2726 {
2727     if(   !strcmp(s->iformat->name, "rtp")
2728        || !strcmp(s->iformat->name, "rtsp")
2729        || !strcmp(s->iformat->name, "sdp")
2730     )
2731         return 1;
2732
2733     if(s->pb && (   !strncmp(s->url, "rtp:", 4)
2734                  || !strncmp(s->url, "udp:", 4)
2735                 )
2736     )
2737         return 1;
2738     return 0;
2739 }
2740
2741 /* this thread gets the stream from the disk or the network */
2742 static int read_thread(void *arg)
2743 {
2744     VideoState *is = arg;
2745     AVFormatContext *ic = NULL;
2746     int err, i, ret;
2747     int st_index[AVMEDIA_TYPE_NB];
2748     AVPacket pkt1, *pkt = &pkt1;
2749     int64_t stream_start_time;
2750     int pkt_in_play_range = 0;
2751     AVDictionaryEntry *t;
2752     SDL_mutex *wait_mutex = SDL_CreateMutex();
2753     int scan_all_pmts_set = 0;
2754     int64_t pkt_ts;
2755
2756     if (!wait_mutex) {
2757         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2758         ret = AVERROR(ENOMEM);
2759         goto fail;
2760     }
2761
2762     memset(st_index, -1, sizeof(st_index));
2763     is->last_video_stream = is->video_stream = -1;
2764     is->last_audio_stream = is->audio_stream = -1;
2765     is->last_subtitle_stream = is->subtitle_stream = -1;
2766     is->eof = 0;
2767
2768     ic = avformat_alloc_context();
2769     if (!ic) {
2770         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2771         ret = AVERROR(ENOMEM);
2772         goto fail;
2773     }
2774     ic->interrupt_callback.callback = decode_interrupt_cb;
2775     ic->interrupt_callback.opaque = is;
2776     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2777         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2778         scan_all_pmts_set = 1;
2779     }
2780     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2781     if (err < 0) {
2782         print_error(is->filename, err);
2783         ret = -1;
2784         goto fail;
2785     }
2786     if (scan_all_pmts_set)
2787         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2788
2789     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2790         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2791         ret = AVERROR_OPTION_NOT_FOUND;
2792         goto fail;
2793     }
2794     is->ic = ic;
2795
2796     if (genpts)
2797         ic->flags |= AVFMT_FLAG_GENPTS;
2798
2799     av_format_inject_global_side_data(ic);
2800
2801     if (find_stream_info) {
2802         AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
2803         int orig_nb_streams = ic->nb_streams;
2804
2805         err = avformat_find_stream_info(ic, opts);
2806
2807         for (i = 0; i < orig_nb_streams; i++)
2808             av_dict_free(&opts[i]);
2809         av_freep(&opts);
2810
2811         if (err < 0) {
2812             av_log(NULL, AV_LOG_WARNING,
2813                    "%s: could not find codec parameters\n", is->filename);
2814             ret = -1;
2815             goto fail;
2816         }
2817     }
2818
2819     if (ic->pb)
2820         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2821
2822     if (seek_by_bytes < 0)
2823         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2824
2825     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2826
2827     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2828         window_title = av_asprintf("%s - %s", t->value, input_filename);
2829
2830     /* if seeking requested, we execute it */
2831     if (start_time != AV_NOPTS_VALUE) {
2832         int64_t timestamp;
2833
2834         timestamp = start_time;
2835         /* add the stream start time */
2836         if (ic->start_time != AV_NOPTS_VALUE)
2837             timestamp += ic->start_time;
2838         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2839         if (ret < 0) {
2840             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2841                     is->filename, (double)timestamp / AV_TIME_BASE);
2842         }
2843     }
2844
2845     is->realtime = is_realtime(ic);
2846
2847     if (show_status)
2848         av_dump_format(ic, 0, is->filename, 0);
2849
2850     for (i = 0; i < ic->nb_streams; i++) {
2851         AVStream *st = ic->streams[i];
2852         enum AVMediaType type = st->codecpar->codec_type;
2853         st->discard = AVDISCARD_ALL;
2854         if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
2855             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2856                 st_index[type] = i;
2857     }
2858     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2859         if (wanted_stream_spec[i] && st_index[i] == -1) {
2860             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));
2861             st_index[i] = INT_MAX;
2862         }
2863     }
2864
2865     if (!video_disable)
2866         st_index[AVMEDIA_TYPE_VIDEO] =
2867             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2868                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2869     if (!audio_disable)
2870         st_index[AVMEDIA_TYPE_AUDIO] =
2871             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2872                                 st_index[AVMEDIA_TYPE_AUDIO],
2873                                 st_index[AVMEDIA_TYPE_VIDEO],
2874                                 NULL, 0);
2875     if (!video_disable && !subtitle_disable)
2876         st_index[AVMEDIA_TYPE_SUBTITLE] =
2877             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2878                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2879                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2880                                  st_index[AVMEDIA_TYPE_AUDIO] :
2881                                  st_index[AVMEDIA_TYPE_VIDEO]),
2882                                 NULL, 0);
2883
2884     is->show_mode = show_mode;
2885     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2886         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2887         AVCodecParameters *codecpar = st->codecpar;
2888         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2889         if (codecpar->width)
2890             set_default_window_size(codecpar->width, codecpar->height, sar);
2891     }
2892
2893     /* open the streams */
2894     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2895         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2896     }
2897
2898     ret = -1;
2899     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2900         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2901     }
2902     if (is->show_mode == SHOW_MODE_NONE)
2903         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2904
2905     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2906         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2907     }
2908
2909     if (is->video_stream < 0 && is->audio_stream < 0) {
2910         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2911                is->filename);
2912         ret = -1;
2913         goto fail;
2914     }
2915
2916     if (infinite_buffer < 0 && is->realtime)
2917         infinite_buffer = 1;
2918
2919     for (;;) {
2920         if (is->abort_request)
2921             break;
2922         if (is->paused != is->last_paused) {
2923             is->last_paused = is->paused;
2924             if (is->paused)
2925                 is->read_pause_return = av_read_pause(ic);
2926             else
2927                 av_read_play(ic);
2928         }
2929 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2930         if (is->paused &&
2931                 (!strcmp(ic->iformat->name, "rtsp") ||
2932                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2933             /* wait 10 ms to avoid trying to get another packet */
2934             /* XXX: horrible */
2935             SDL_Delay(10);
2936             continue;
2937         }
2938 #endif
2939         if (is->seek_req) {
2940             int64_t seek_target = is->seek_pos;
2941             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2942             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2943 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2944 //      of the seek_pos/seek_rel variables
2945
2946             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2947             if (ret < 0) {
2948                 av_log(NULL, AV_LOG_ERROR,
2949                        "%s: error while seeking\n", is->ic->url);
2950             } else {
2951                 if (is->audio_stream >= 0) {
2952                     packet_queue_flush(&is->audioq);
2953                     packet_queue_put(&is->audioq, &flush_pkt);
2954                 }
2955                 if (is->subtitle_stream >= 0) {
2956                     packet_queue_flush(&is->subtitleq);
2957                     packet_queue_put(&is->subtitleq, &flush_pkt);
2958                 }
2959                 if (is->video_stream >= 0) {
2960                     packet_queue_flush(&is->videoq);
2961                     packet_queue_put(&is->videoq, &flush_pkt);
2962                 }
2963                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2964                    set_clock(&is->extclk, NAN, 0);
2965                 } else {
2966                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2967                 }
2968             }
2969             is->seek_req = 0;
2970             is->queue_attachments_req = 1;
2971             is->eof = 0;
2972             if (is->paused)
2973                 step_to_next_frame(is);
2974         }
2975         if (is->queue_attachments_req) {
2976             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2977                 AVPacket copy = { 0 };
2978                 if ((ret = av_packet_ref(&copy, &is->video_st->attached_pic)) < 0)
2979                     goto fail;
2980                 packet_queue_put(&is->videoq, &copy);
2981                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2982             }
2983             is->queue_attachments_req = 0;
2984         }
2985
2986         /* if the queue are full, no need to read more */
2987         if (infinite_buffer<1 &&
2988               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2989             || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
2990                 stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
2991                 stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
2992             /* wait 10 ms */
2993             SDL_LockMutex(wait_mutex);
2994             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2995             SDL_UnlockMutex(wait_mutex);
2996             continue;
2997         }
2998         if (!is->paused &&
2999             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3000             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3001             if (loop != 1 && (!loop || --loop)) {
3002                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3003             } else if (autoexit) {
3004                 ret = AVERROR_EOF;
3005                 goto fail;
3006             }
3007         }
3008         ret = av_read_frame(ic, pkt);
3009         if (ret < 0) {
3010             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3011                 if (is->video_stream >= 0)
3012                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3013                 if (is->audio_stream >= 0)
3014                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3015                 if (is->subtitle_stream >= 0)
3016                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3017                 is->eof = 1;
3018             }
3019             if (ic->pb && ic->pb->error)
3020                 break;
3021             SDL_LockMutex(wait_mutex);
3022             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3023             SDL_UnlockMutex(wait_mutex);
3024             continue;
3025         } else {
3026             is->eof = 0;
3027         }
3028         /* check if packet is in play range specified by user, then queue, otherwise discard */
3029         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3030         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3031         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3032                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3033                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3034                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3035                 <= ((double)duration / 1000000);
3036         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3037             packet_queue_put(&is->audioq, pkt);
3038         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3039                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3040             packet_queue_put(&is->videoq, pkt);
3041         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3042             packet_queue_put(&is->subtitleq, pkt);
3043         } else {
3044             av_packet_unref(pkt);
3045         }
3046     }
3047
3048     ret = 0;
3049  fail:
3050     if (ic && !is->ic)
3051         avformat_close_input(&ic);
3052
3053     if (ret != 0) {
3054         SDL_Event event;
3055
3056         event.type = FF_QUIT_EVENT;
3057         event.user.data1 = is;
3058         SDL_PushEvent(&event);
3059     }
3060     SDL_DestroyMutex(wait_mutex);
3061     return 0;
3062 }
3063
3064 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3065 {
3066     VideoState *is;
3067
3068     is = av_mallocz(sizeof(VideoState));
3069     if (!is)
3070         return NULL;
3071     is->filename = av_strdup(filename);
3072     if (!is->filename)
3073         goto fail;
3074     is->iformat = iformat;
3075     is->ytop    = 0;
3076     is->xleft   = 0;
3077
3078     /* start video display */
3079     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3080         goto fail;
3081     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3082         goto fail;
3083     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3084         goto fail;
3085
3086     if (packet_queue_init(&is->videoq) < 0 ||
3087         packet_queue_init(&is->audioq) < 0 ||
3088         packet_queue_init(&is->subtitleq) < 0)
3089         goto fail;
3090
3091     if (!(is->continue_read_thread = SDL_CreateCond())) {
3092         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3093         goto fail;
3094     }
3095
3096     init_clock(&is->vidclk, &is->videoq.serial);
3097     init_clock(&is->audclk, &is->audioq.serial);
3098     init_clock(&is->extclk, &is->extclk.serial);
3099     is->audio_clock_serial = -1;
3100     if (startup_volume < 0)
3101         av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
3102     if (startup_volume > 100)
3103         av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
3104     startup_volume = av_clip(startup_volume, 0, 100);
3105     startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
3106     is->audio_volume = startup_volume;
3107     is->muted = 0;
3108     is->av_sync_type = av_sync_type;
3109     is->read_tid     = SDL_CreateThread(read_thread, "read_thread", is);
3110     if (!is->read_tid) {
3111         av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3112 fail:
3113         stream_close(is);
3114         return NULL;
3115     }
3116     return is;
3117 }
3118
3119 static void stream_cycle_channel(VideoState *is, int codec_type)
3120 {
3121     AVFormatContext *ic = is->ic;
3122     int start_index, stream_index;
3123     int old_index;
3124     AVStream *st;
3125     AVProgram *p = NULL;
3126     int nb_streams = is->ic->nb_streams;
3127
3128     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3129         start_index = is->last_video_stream;
3130         old_index = is->video_stream;
3131     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3132         start_index = is->last_audio_stream;
3133         old_index = is->audio_stream;
3134     } else {
3135         start_index = is->last_subtitle_stream;
3136         old_index = is->subtitle_stream;
3137     }
3138     stream_index = start_index;
3139
3140     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3141         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3142         if (p) {
3143             nb_streams = p->nb_stream_indexes;
3144             for (start_index = 0; start_index < nb_streams; start_index++)
3145                 if (p->stream_index[start_index] == stream_index)
3146                     break;
3147             if (start_index == nb_streams)
3148                 start_index = -1;
3149             stream_index = start_index;
3150         }
3151     }
3152
3153     for (;;) {
3154         if (++stream_index >= nb_streams)
3155         {
3156             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3157             {
3158                 stream_index = -1;
3159                 is->last_subtitle_stream = -1;
3160                 goto the_end;
3161             }
3162             if (start_index == -1)
3163                 return;
3164             stream_index = 0;
3165         }
3166         if (stream_index == start_index)
3167             return;
3168         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3169         if (st->codecpar->codec_type == codec_type) {
3170             /* check that parameters are OK */
3171             switch (codec_type) {
3172             case AVMEDIA_TYPE_AUDIO:
3173                 if (st->codecpar->sample_rate != 0 &&
3174                     st->codecpar->channels != 0)
3175                     goto the_end;
3176                 break;
3177             case AVMEDIA_TYPE_VIDEO:
3178             case AVMEDIA_TYPE_SUBTITLE:
3179                 goto the_end;
3180             default:
3181                 break;
3182             }
3183         }
3184     }
3185  the_end:
3186     if (p && stream_index != -1)
3187         stream_index = p->stream_index[stream_index];
3188     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3189            av_get_media_type_string(codec_type),
3190            old_index,
3191            stream_index);
3192
3193     stream_component_close(is, old_index);
3194     stream_component_open(is, stream_index);
3195 }
3196
3197
3198 static void toggle_full_screen(VideoState *is)
3199 {
3200     is_full_screen = !is_full_screen;
3201     SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
3202 }
3203
3204 static void toggle_audio_display(VideoState *is)
3205 {
3206     int next = is->show_mode;
3207     do {
3208         next = (next + 1) % SHOW_MODE_NB;
3209     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3210     if (is->show_mode != next) {
3211         is->force_refresh = 1;
3212         is->show_mode = next;
3213     }
3214 }
3215
3216 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3217     double remaining_time = 0.0;
3218     SDL_PumpEvents();
3219     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
3220         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3221             SDL_ShowCursor(0);
3222             cursor_hidden = 1;
3223         }
3224         if (remaining_time > 0.0)
3225             av_usleep((int64_t)(remaining_time * 1000000.0));
3226         remaining_time = REFRESH_RATE;
3227         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3228             video_refresh(is, &remaining_time);
3229         SDL_PumpEvents();
3230     }
3231 }
3232
3233 static void seek_chapter(VideoState *is, int incr)
3234 {
3235     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3236     int i;
3237
3238     if (!is->ic->nb_chapters)
3239         return;
3240
3241     /* find the current chapter */
3242     for (i = 0; i < is->ic->nb_chapters; i++) {
3243         AVChapter *ch = is->ic->chapters[i];
3244         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3245             i--;
3246             break;
3247         }
3248     }
3249
3250     i += incr;
3251     i = FFMAX(i, 0);
3252     if (i >= is->ic->nb_chapters)
3253         return;
3254
3255     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3256     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3257                                  AV_TIME_BASE_Q), 0, 0);
3258 }
3259
3260 /* handle an event sent by the GUI */
3261 static void event_loop(VideoState *cur_stream)
3262 {
3263     SDL_Event event;
3264     double incr, pos, frac;
3265
3266     for (;;) {
3267         double x;
3268         refresh_loop_wait_event(cur_stream, &event);
3269         switch (event.type) {
3270         case SDL_KEYDOWN:
3271             if (exit_on_keydown || event.key.keysym.sym == SDLK_ESCAPE || event.key.keysym.sym == SDLK_q) {
3272                 do_exit(cur_stream);
3273                 break;
3274             }
3275             // If we don't yet have a window, skip all key events, because read_thread might still be initializing...
3276             if (!cur_stream->width)
3277                 continue;
3278             switch (event.key.keysym.sym) {
3279             case SDLK_f:
3280                 toggle_full_screen(cur_stream);
3281                 cur_stream->force_refresh = 1;
3282                 break;
3283             case SDLK_p:
3284             case SDLK_SPACE:
3285                 toggle_pause(cur_stream);
3286                 break;
3287             case SDLK_m:
3288                 toggle_mute(cur_stream);
3289                 break;
3290             case SDLK_KP_MULTIPLY:
3291             case SDLK_0:
3292                 update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3293                 break;
3294             case SDLK_KP_DIVIDE:
3295             case SDLK_9:
3296                 update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3297                 break;
3298             case SDLK_s: // S: Step to next frame
3299                 step_to_next_frame(cur_stream);
3300                 break;
3301             case SDLK_a:
3302                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3303                 break;
3304             case SDLK_v:
3305                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3306                 break;
3307             case SDLK_c:
3308                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3309                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3310                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3311                 break;
3312             case SDLK_t:
3313                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3314                 break;
3315             case SDLK_w:
3316 #if CONFIG_AVFILTER
3317                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3318                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3319                         cur_stream->vfilter_idx = 0;
3320                 } else {
3321                     cur_stream->vfilter_idx = 0;
3322                     toggle_audio_display(cur_stream);
3323                 }
3324 #else
3325                 toggle_audio_display(cur_stream);
3326 #endif
3327                 break;
3328             case SDLK_PAGEUP:
3329                 if (cur_stream->ic->nb_chapters <= 1) {
3330                     incr = 600.0;
3331                     goto do_seek;
3332                 }
3333                 seek_chapter(cur_stream, 1);
3334                 break;
3335             case SDLK_PAGEDOWN:
3336                 if (cur_stream->ic->nb_chapters <= 1) {
3337                     incr = -600.0;
3338                     goto do_seek;
3339                 }
3340                 seek_chapter(cur_stream, -1);
3341                 break;
3342             case SDLK_LEFT:
3343                 incr = seek_interval ? -seek_interval : -10.0;
3344                 goto do_seek;
3345             case SDLK_RIGHT:
3346                 incr = seek_interval ? seek_interval : 10.0;
3347                 goto do_seek;
3348             case SDLK_UP:
3349                 incr = 60.0;
3350                 goto do_seek;
3351             case SDLK_DOWN:
3352                 incr = -60.0;
3353             do_seek:
3354                     if (seek_by_bytes) {
3355                         pos = -1;
3356                         if (pos < 0 && cur_stream->video_stream >= 0)
3357                             pos = frame_queue_last_pos(&cur_stream->pictq);
3358                         if (pos < 0 && cur_stream->audio_stream >= 0)
3359                             pos = frame_queue_last_pos(&cur_stream->sampq);
3360                         if (pos < 0)
3361                             pos = avio_tell(cur_stream->ic->pb);
3362                         if (cur_stream->ic->bit_rate)
3363                             incr *= cur_stream->ic->bit_rate / 8.0;
3364                         else
3365                             incr *= 180000.0;
3366                         pos += incr;
3367                         stream_seek(cur_stream, pos, incr, 1);
3368                     } else {
3369                         pos = get_master_clock(cur_stream);
3370                         if (isnan(pos))
3371                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3372                         pos += incr;
3373                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3374                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3375                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3376                     }
3377                 break;
3378             default:
3379                 break;
3380             }
3381             break;
3382         case SDL_MOUSEBUTTONDOWN:
3383             if (exit_on_mousedown) {
3384                 do_exit(cur_stream);
3385                 break;
3386             }
3387             if (event.button.button == SDL_BUTTON_LEFT) {
3388                 static int64_t last_mouse_left_click = 0;
3389                 if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3390                     toggle_full_screen(cur_stream);
3391                     cur_stream->force_refresh = 1;
3392                     last_mouse_left_click = 0;
3393                 } else {
3394                     last_mouse_left_click = av_gettime_relative();
3395                 }
3396             }
3397         case SDL_MOUSEMOTION:
3398             if (cursor_hidden) {
3399                 SDL_ShowCursor(1);
3400                 cursor_hidden = 0;
3401             }
3402             cursor_last_shown = av_gettime_relative();
3403             if (event.type == SDL_MOUSEBUTTONDOWN) {
3404                 if (event.button.button != SDL_BUTTON_RIGHT)
3405                     break;
3406                 x = event.button.x;
3407             } else {
3408                 if (!(event.motion.state & SDL_BUTTON_RMASK))
3409                     break;
3410                 x = event.motion.x;
3411             }
3412                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3413                     uint64_t size =  avio_size(cur_stream->ic->pb);
3414                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3415                 } else {
3416                     int64_t ts;
3417                     int ns, hh, mm, ss;
3418                     int tns, thh, tmm, tss;
3419                     tns  = cur_stream->ic->duration / 1000000LL;
3420                     thh  = tns / 3600;
3421                     tmm  = (tns % 3600) / 60;
3422                     tss  = (tns % 60);
3423                     frac = x / cur_stream->width;
3424                     ns   = frac * tns;
3425                     hh   = ns / 3600;
3426                     mm   = (ns % 3600) / 60;
3427                     ss   = (ns % 60);
3428                     av_log(NULL, AV_LOG_INFO,
3429                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3430                             hh, mm, ss, thh, tmm, tss);
3431                     ts = frac * cur_stream->ic->duration;
3432                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3433                         ts += cur_stream->ic->start_time;
3434                     stream_seek(cur_stream, ts, 0, 0);
3435                 }
3436             break;
3437         case SDL_WINDOWEVENT:
3438             switch (event.window.event) {
3439                 case SDL_WINDOWEVENT_SIZE_CHANGED:
3440                     screen_width  = cur_stream->width  = event.window.data1;
3441                     screen_height = cur_stream->height = event.window.data2;
3442                     if (cur_stream->vis_texture) {
3443                         SDL_DestroyTexture(cur_stream->vis_texture);
3444                         cur_stream->vis_texture = NULL;
3445                     }
3446                 case SDL_WINDOWEVENT_EXPOSED:
3447                     cur_stream->force_refresh = 1;
3448             }
3449             break;
3450         case SDL_QUIT:
3451         case FF_QUIT_EVENT:
3452             do_exit(cur_stream);
3453             break;
3454         default:
3455             break;
3456         }
3457     }
3458 }
3459
3460 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3461 {
3462     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3463     return opt_default(NULL, "video_size", arg);
3464 }
3465
3466 static int opt_width(void *optctx, const char *opt, const char *arg)
3467 {
3468     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3469     return 0;
3470 }
3471
3472 static int opt_height(void *optctx, const char *opt, const char *arg)
3473 {
3474     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3475     return 0;
3476 }
3477
3478 static int opt_format(void *optctx, const char *opt, const char *arg)
3479 {
3480     file_iformat = av_find_input_format(arg);
3481     if (!file_iformat) {
3482         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3483         return AVERROR(EINVAL);
3484     }
3485     return 0;
3486 }
3487
3488 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3489 {
3490     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3491     return opt_default(NULL, "pixel_format", arg);
3492 }
3493
3494 static int opt_sync(void *optctx, const char *opt, const char *arg)
3495 {
3496     if (!strcmp(arg, "audio"))
3497         av_sync_type = AV_SYNC_AUDIO_MASTER;
3498     else if (!strcmp(arg, "video"))
3499         av_sync_type = AV_SYNC_VIDEO_MASTER;
3500     else if (!strcmp(arg, "ext"))
3501         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3502     else {
3503         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3504         exit(1);
3505     }
3506     return 0;
3507 }
3508
3509 static int opt_seek(void *optctx, const char *opt, const char *arg)
3510 {
3511     start_time = parse_time_or_die(opt, arg, 1);
3512     return 0;
3513 }
3514
3515 static int opt_duration(void *optctx, const char *opt, const char *arg)
3516 {
3517     duration = parse_time_or_die(opt, arg, 1);
3518     return 0;
3519 }
3520
3521 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3522 {
3523     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3524                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3525                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3526                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3527     return 0;
3528 }
3529
3530 static void opt_input_file(void *optctx, const char *filename)
3531 {
3532     if (input_filename) {
3533         av_log(NULL, AV_LOG_FATAL,
3534                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3535                 filename, input_filename);
3536         exit(1);
3537     }
3538     if (!strcmp(filename, "-"))
3539         filename = "pipe:";
3540     input_filename = filename;
3541 }
3542
3543 static int opt_codec(void *optctx, const char *opt, const char *arg)
3544 {
3545    const char *spec = strchr(opt, ':');
3546    if (!spec) {
3547        av_log(NULL, AV_LOG_ERROR,
3548               "No media specifier was specified in '%s' in option '%s'\n",
3549                arg, opt);
3550        return AVERROR(EINVAL);
3551    }
3552    spec++;
3553    switch (spec[0]) {
3554    case 'a' :    audio_codec_name = arg; break;
3555    case 's' : subtitle_codec_name = arg; break;
3556    case 'v' :    video_codec_name = arg; break;
3557    default:
3558        av_log(NULL, AV_LOG_ERROR,
3559               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3560        return AVERROR(EINVAL);
3561    }
3562    return 0;
3563 }
3564
3565 static int dummy;
3566
3567 static const OptionDef options[] = {
3568     CMDUTILS_COMMON_OPTIONS
3569     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3570     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3571     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3572     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3573     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3574     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3575     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3576     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3577     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3578     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3579     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3580     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3581     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3582     { "seek_interval", OPT_FLOAT | HAS_ARG, { &seek_interval }, "set seek interval for left/right keys, in seconds", "seconds" },
3583     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3584     { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
3585     { "alwaysontop", OPT_BOOL, { &alwaysontop }, "window always on top" },
3586     { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
3587     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3588     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3589     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3590     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3591     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3592     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3593     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3594     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3595     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3596     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3597     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3598     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3599     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3600     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "&q