ffplay: do not drain existing filters when seeking
[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 audio_disable;
318 static int video_disable;
319 static int subtitle_disable;
320 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
321 static int seek_by_bytes = -1;
322 static int display_disable;
323 static int borderless;
324 static int startup_volume = 100;
325 static int show_status = 1;
326 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
327 static int64_t start_time = AV_NOPTS_VALUE;
328 static int64_t duration = AV_NOPTS_VALUE;
329 static int fast = 0;
330 static int genpts = 0;
331 static int lowres = 0;
332 static int decoder_reorder_pts = -1;
333 static int autoexit;
334 static int exit_on_keydown;
335 static int exit_on_mousedown;
336 static int loop = 1;
337 static int framedrop = -1;
338 static int infinite_buffer = -1;
339 static enum ShowMode show_mode = SHOW_MODE_NONE;
340 static const char *audio_codec_name;
341 static const char *subtitle_codec_name;
342 static const char *video_codec_name;
343 double rdftspeed = 0.02;
344 static int64_t cursor_last_shown;
345 static int cursor_hidden = 0;
346 #if CONFIG_AVFILTER
347 static const char **vfilters_list = NULL;
348 static int nb_vfilters = 0;
349 static char *afilters = NULL;
350 #endif
351 static int autorotate = 1;
352 static int find_stream_info = 1;
353
354 /* current context */
355 static int is_full_screen;
356 static int64_t audio_callback_time;
357
358 static AVPacket flush_pkt;
359
360 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
361
362 static SDL_Window *window;
363 static SDL_Renderer *renderer;
364 static SDL_RendererInfo renderer_info = {0};
365 static SDL_AudioDeviceID audio_dev;
366
367 static const struct TextureFormatEntry {
368     enum AVPixelFormat format;
369     int texture_fmt;
370 } sdl_texture_format_map[] = {
371     { AV_PIX_FMT_RGB8,           SDL_PIXELFORMAT_RGB332 },
372     { AV_PIX_FMT_RGB444,         SDL_PIXELFORMAT_RGB444 },
373     { AV_PIX_FMT_RGB555,         SDL_PIXELFORMAT_RGB555 },
374     { AV_PIX_FMT_BGR555,         SDL_PIXELFORMAT_BGR555 },
375     { AV_PIX_FMT_RGB565,         SDL_PIXELFORMAT_RGB565 },
376     { AV_PIX_FMT_BGR565,         SDL_PIXELFORMAT_BGR565 },
377     { AV_PIX_FMT_RGB24,          SDL_PIXELFORMAT_RGB24 },
378     { AV_PIX_FMT_BGR24,          SDL_PIXELFORMAT_BGR24 },
379     { AV_PIX_FMT_0RGB32,         SDL_PIXELFORMAT_RGB888 },
380     { AV_PIX_FMT_0BGR32,         SDL_PIXELFORMAT_BGR888 },
381     { AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
382     { AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
383     { AV_PIX_FMT_RGB32,          SDL_PIXELFORMAT_ARGB8888 },
384     { AV_PIX_FMT_RGB32_1,        SDL_PIXELFORMAT_RGBA8888 },
385     { AV_PIX_FMT_BGR32,          SDL_PIXELFORMAT_ABGR8888 },
386     { AV_PIX_FMT_BGR32_1,        SDL_PIXELFORMAT_BGRA8888 },
387     { AV_PIX_FMT_YUV420P,        SDL_PIXELFORMAT_IYUV },
388     { AV_PIX_FMT_YUYV422,        SDL_PIXELFORMAT_YUY2 },
389     { AV_PIX_FMT_UYVY422,        SDL_PIXELFORMAT_UYVY },
390     { AV_PIX_FMT_NONE,           SDL_PIXELFORMAT_UNKNOWN },
391 };
392
393 #if CONFIG_AVFILTER
394 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
395 {
396     GROW_ARRAY(vfilters_list, nb_vfilters);
397     vfilters_list[nb_vfilters - 1] = arg;
398     return 0;
399 }
400 #endif
401
402 static inline
403 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
404                    enum AVSampleFormat fmt2, int64_t channel_count2)
405 {
406     /* If channel count == 1, planar and non-planar formats are the same */
407     if (channel_count1 == 1 && channel_count2 == 1)
408         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
409     else
410         return channel_count1 != channel_count2 || fmt1 != fmt2;
411 }
412
413 static inline
414 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
415 {
416     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
417         return channel_layout;
418     else
419         return 0;
420 }
421
422 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
423 {
424     MyAVPacketList *pkt1;
425
426     if (q->abort_request)
427        return -1;
428
429     pkt1 = av_malloc(sizeof(MyAVPacketList));
430     if (!pkt1)
431         return -1;
432     pkt1->pkt = *pkt;
433     pkt1->next = NULL;
434     if (pkt == &flush_pkt)
435         q->serial++;
436     pkt1->serial = q->serial;
437
438     if (!q->last_pkt)
439         q->first_pkt = pkt1;
440     else
441         q->last_pkt->next = pkt1;
442     q->last_pkt = pkt1;
443     q->nb_packets++;
444     q->size += pkt1->pkt.size + sizeof(*pkt1);
445     q->duration += pkt1->pkt.duration;
446     /* XXX: should duplicate packet data in DV case */
447     SDL_CondSignal(q->cond);
448     return 0;
449 }
450
451 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
452 {
453     int ret;
454
455     SDL_LockMutex(q->mutex);
456     ret = packet_queue_put_private(q, pkt);
457     SDL_UnlockMutex(q->mutex);
458
459     if (pkt != &flush_pkt && ret < 0)
460         av_packet_unref(pkt);
461
462     return ret;
463 }
464
465 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
466 {
467     AVPacket pkt1, *pkt = &pkt1;
468     av_init_packet(pkt);
469     pkt->data = NULL;
470     pkt->size = 0;
471     pkt->stream_index = stream_index;
472     return packet_queue_put(q, pkt);
473 }
474
475 /* packet queue handling */
476 static int packet_queue_init(PacketQueue *q)
477 {
478     memset(q, 0, sizeof(PacketQueue));
479     q->mutex = SDL_CreateMutex();
480     if (!q->mutex) {
481         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
482         return AVERROR(ENOMEM);
483     }
484     q->cond = SDL_CreateCond();
485     if (!q->cond) {
486         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
487         return AVERROR(ENOMEM);
488     }
489     q->abort_request = 1;
490     return 0;
491 }
492
493 static void packet_queue_flush(PacketQueue *q)
494 {
495     MyAVPacketList *pkt, *pkt1;
496
497     SDL_LockMutex(q->mutex);
498     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
499         pkt1 = pkt->next;
500         av_packet_unref(&pkt->pkt);
501         av_freep(&pkt);
502     }
503     q->last_pkt = NULL;
504     q->first_pkt = NULL;
505     q->nb_packets = 0;
506     q->size = 0;
507     q->duration = 0;
508     SDL_UnlockMutex(q->mutex);
509 }
510
511 static void packet_queue_destroy(PacketQueue *q)
512 {
513     packet_queue_flush(q);
514     SDL_DestroyMutex(q->mutex);
515     SDL_DestroyCond(q->cond);
516 }
517
518 static void packet_queue_abort(PacketQueue *q)
519 {
520     SDL_LockMutex(q->mutex);
521
522     q->abort_request = 1;
523
524     SDL_CondSignal(q->cond);
525
526     SDL_UnlockMutex(q->mutex);
527 }
528
529 static void packet_queue_start(PacketQueue *q)
530 {
531     SDL_LockMutex(q->mutex);
532     q->abort_request = 0;
533     packet_queue_put_private(q, &flush_pkt);
534     SDL_UnlockMutex(q->mutex);
535 }
536
537 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
538 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
539 {
540     MyAVPacketList *pkt1;
541     int ret;
542
543     SDL_LockMutex(q->mutex);
544
545     for (;;) {
546         if (q->abort_request) {
547             ret = -1;
548             break;
549         }
550
551         pkt1 = q->first_pkt;
552         if (pkt1) {
553             q->first_pkt = pkt1->next;
554             if (!q->first_pkt)
555                 q->last_pkt = NULL;
556             q->nb_packets--;
557             q->size -= pkt1->pkt.size + sizeof(*pkt1);
558             q->duration -= pkt1->pkt.duration;
559             *pkt = pkt1->pkt;
560             if (serial)
561                 *serial = pkt1->serial;
562             av_free(pkt1);
563             ret = 1;
564             break;
565         } else if (!block) {
566             ret = 0;
567             break;
568         } else {
569             SDL_CondWait(q->cond, q->mutex);
570         }
571     }
572     SDL_UnlockMutex(q->mutex);
573     return ret;
574 }
575
576 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
577     memset(d, 0, sizeof(Decoder));
578     d->avctx = avctx;
579     d->queue = queue;
580     d->empty_queue_cond = empty_queue_cond;
581     d->start_pts = AV_NOPTS_VALUE;
582     d->pkt_serial = -1;
583 }
584
585 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
586     int ret = AVERROR(EAGAIN);
587
588     for (;;) {
589         AVPacket pkt;
590
591         if (d->queue->serial == d->pkt_serial) {
592             do {
593                 if (d->queue->abort_request)
594                     return -1;
595
596                 switch (d->avctx->codec_type) {
597                     case AVMEDIA_TYPE_VIDEO:
598                         ret = avcodec_receive_frame(d->avctx, frame);
599                         if (ret >= 0) {
600                             if (decoder_reorder_pts == -1) {
601                                 frame->pts = frame->best_effort_timestamp;
602                             } else if (!decoder_reorder_pts) {
603                                 frame->pts = frame->pkt_dts;
604                             }
605                         }
606                         break;
607                     case AVMEDIA_TYPE_AUDIO:
608                         ret = avcodec_receive_frame(d->avctx, frame);
609                         if (ret >= 0) {
610                             AVRational tb = (AVRational){1, frame->sample_rate};
611                             if (frame->pts != AV_NOPTS_VALUE)
612                                 frame->pts = av_rescale_q(frame->pts, d->avctx->pkt_timebase, tb);
613                             else if (d->next_pts != AV_NOPTS_VALUE)
614                                 frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
615                             if (frame->pts != AV_NOPTS_VALUE) {
616                                 d->next_pts = frame->pts + frame->nb_samples;
617                                 d->next_pts_tb = tb;
618                             }
619                         }
620                         break;
621                 }
622                 if (ret == AVERROR_EOF) {
623                     d->finished = d->pkt_serial;
624                     avcodec_flush_buffers(d->avctx);
625                     return 0;
626                 }
627                 if (ret >= 0)
628                     return 1;
629             } while (ret != AVERROR(EAGAIN));
630         }
631
632         do {
633             if (d->queue->nb_packets == 0)
634                 SDL_CondSignal(d->empty_queue_cond);
635             if (d->packet_pending) {
636                 av_packet_move_ref(&pkt, &d->pkt);
637                 d->packet_pending = 0;
638             } else {
639                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
640                     return -1;
641             }
642         } while (d->queue->serial != d->pkt_serial);
643
644         if (pkt.data == flush_pkt.data) {
645             avcodec_flush_buffers(d->avctx);
646             d->finished = 0;
647             d->next_pts = d->start_pts;
648             d->next_pts_tb = d->start_pts_tb;
649         } else {
650             if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
651                 int got_frame = 0;
652                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &pkt);
653                 if (ret < 0) {
654                     ret = AVERROR(EAGAIN);
655                 } else {
656                     if (got_frame && !pkt.data) {
657                        d->packet_pending = 1;
658                        av_packet_move_ref(&d->pkt, &pkt);
659                     }
660                     ret = got_frame ? 0 : (pkt.data ? AVERROR(EAGAIN) : AVERROR_EOF);
661                 }
662             } else {
663                 if (avcodec_send_packet(d->avctx, &pkt) == AVERROR(EAGAIN)) {
664                     av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
665                     d->packet_pending = 1;
666                     av_packet_move_ref(&d->pkt, &pkt);
667                 }
668             }
669             av_packet_unref(&pkt);
670         }
671     }
672 }
673
674 static void decoder_destroy(Decoder *d) {
675     av_packet_unref(&d->pkt);
676     avcodec_free_context(&d->avctx);
677 }
678
679 static void frame_queue_unref_item(Frame *vp)
680 {
681     av_frame_unref(vp->frame);
682     avsubtitle_free(&vp->sub);
683 }
684
685 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
686 {
687     int i;
688     memset(f, 0, sizeof(FrameQueue));
689     if (!(f->mutex = SDL_CreateMutex())) {
690         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
691         return AVERROR(ENOMEM);
692     }
693     if (!(f->cond = SDL_CreateCond())) {
694         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
695         return AVERROR(ENOMEM);
696     }
697     f->pktq = pktq;
698     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
699     f->keep_last = !!keep_last;
700     for (i = 0; i < f->max_size; i++)
701         if (!(f->queue[i].frame = av_frame_alloc()))
702             return AVERROR(ENOMEM);
703     return 0;
704 }
705
706 static void frame_queue_destory(FrameQueue *f)
707 {
708     int i;
709     for (i = 0; i < f->max_size; i++) {
710         Frame *vp = &f->queue[i];
711         frame_queue_unref_item(vp);
712         av_frame_free(&vp->frame);
713     }
714     SDL_DestroyMutex(f->mutex);
715     SDL_DestroyCond(f->cond);
716 }
717
718 static void frame_queue_signal(FrameQueue *f)
719 {
720     SDL_LockMutex(f->mutex);
721     SDL_CondSignal(f->cond);
722     SDL_UnlockMutex(f->mutex);
723 }
724
725 static Frame *frame_queue_peek(FrameQueue *f)
726 {
727     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
728 }
729
730 static Frame *frame_queue_peek_next(FrameQueue *f)
731 {
732     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
733 }
734
735 static Frame *frame_queue_peek_last(FrameQueue *f)
736 {
737     return &f->queue[f->rindex];
738 }
739
740 static Frame *frame_queue_peek_writable(FrameQueue *f)
741 {
742     /* wait until we have space to put a new frame */
743     SDL_LockMutex(f->mutex);
744     while (f->size >= f->max_size &&
745            !f->pktq->abort_request) {
746         SDL_CondWait(f->cond, f->mutex);
747     }
748     SDL_UnlockMutex(f->mutex);
749
750     if (f->pktq->abort_request)
751         return NULL;
752
753     return &f->queue[f->windex];
754 }
755
756 static Frame *frame_queue_peek_readable(FrameQueue *f)
757 {
758     /* wait until we have a readable a new frame */
759     SDL_LockMutex(f->mutex);
760     while (f->size - f->rindex_shown <= 0 &&
761            !f->pktq->abort_request) {
762         SDL_CondWait(f->cond, f->mutex);
763     }
764     SDL_UnlockMutex(f->mutex);
765
766     if (f->pktq->abort_request)
767         return NULL;
768
769     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
770 }
771
772 static void frame_queue_push(FrameQueue *f)
773 {
774     if (++f->windex == f->max_size)
775         f->windex = 0;
776     SDL_LockMutex(f->mutex);
777     f->size++;
778     SDL_CondSignal(f->cond);
779     SDL_UnlockMutex(f->mutex);
780 }
781
782 static void frame_queue_next(FrameQueue *f)
783 {
784     if (f->keep_last && !f->rindex_shown) {
785         f->rindex_shown = 1;
786         return;
787     }
788     frame_queue_unref_item(&f->queue[f->rindex]);
789     if (++f->rindex == f->max_size)
790         f->rindex = 0;
791     SDL_LockMutex(f->mutex);
792     f->size--;
793     SDL_CondSignal(f->cond);
794     SDL_UnlockMutex(f->mutex);
795 }
796
797 /* return the number of undisplayed frames in the queue */
798 static int frame_queue_nb_remaining(FrameQueue *f)
799 {
800     return f->size - f->rindex_shown;
801 }
802
803 /* return last shown position */
804 static int64_t frame_queue_last_pos(FrameQueue *f)
805 {
806     Frame *fp = &f->queue[f->rindex];
807     if (f->rindex_shown && fp->serial == f->pktq->serial)
808         return fp->pos;
809     else
810         return -1;
811 }
812
813 static void decoder_abort(Decoder *d, FrameQueue *fq)
814 {
815     packet_queue_abort(d->queue);
816     frame_queue_signal(fq);
817     SDL_WaitThread(d->decoder_tid, NULL);
818     d->decoder_tid = NULL;
819     packet_queue_flush(d->queue);
820 }
821
822 static inline void fill_rectangle(int x, int y, int w, int h)
823 {
824     SDL_Rect rect;
825     rect.x = x;
826     rect.y = y;
827     rect.w = w;
828     rect.h = h;
829     if (w && h)
830         SDL_RenderFillRect(renderer, &rect);
831 }
832
833 static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
834 {
835     Uint32 format;
836     int access, w, h;
837     if (!*texture || SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
838         void *pixels;
839         int pitch;
840         if (*texture)
841             SDL_DestroyTexture(*texture);
842         if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
843             return -1;
844         if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
845             return -1;
846         if (init_texture) {
847             if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
848                 return -1;
849             memset(pixels, 0, pitch * new_height);
850             SDL_UnlockTexture(*texture);
851         }
852         av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
853     }
854     return 0;
855 }
856
857 static void calculate_display_rect(SDL_Rect *rect,
858                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
859                                    int pic_width, int pic_height, AVRational pic_sar)
860 {
861     float aspect_ratio;
862     int width, height, x, y;
863
864     if (pic_sar.num == 0)
865         aspect_ratio = 0;
866     else
867         aspect_ratio = av_q2d(pic_sar);
868
869     if (aspect_ratio <= 0.0)
870         aspect_ratio = 1.0;
871     aspect_ratio *= (float)pic_width / (float)pic_height;
872
873     /* XXX: we suppose the screen has a 1.0 pixel ratio */
874     height = scr_height;
875     width = lrint(height * aspect_ratio) & ~1;
876     if (width > scr_width) {
877         width = scr_width;
878         height = lrint(width / aspect_ratio) & ~1;
879     }
880     x = (scr_width - width) / 2;
881     y = (scr_height - height) / 2;
882     rect->x = scr_xleft + x;
883     rect->y = scr_ytop  + y;
884     rect->w = FFMAX(width,  1);
885     rect->h = FFMAX(height, 1);
886 }
887
888 static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
889 {
890     int i;
891     *sdl_blendmode = SDL_BLENDMODE_NONE;
892     *sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
893     if (format == AV_PIX_FMT_RGB32   ||
894         format == AV_PIX_FMT_RGB32_1 ||
895         format == AV_PIX_FMT_BGR32   ||
896         format == AV_PIX_FMT_BGR32_1)
897         *sdl_blendmode = SDL_BLENDMODE_BLEND;
898     for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
899         if (format == sdl_texture_format_map[i].format) {
900             *sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
901             return;
902         }
903     }
904 }
905
906 static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
907     int ret = 0;
908     Uint32 sdl_pix_fmt;
909     SDL_BlendMode sdl_blendmode;
910     get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
911     if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
912         return -1;
913     switch (sdl_pix_fmt) {
914         case SDL_PIXELFORMAT_UNKNOWN:
915             /* This should only happen if we are not using avfilter... */
916             *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
917                 frame->width, frame->height, frame->format, frame->width, frame->height,
918                 AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
919             if (*img_convert_ctx != NULL) {
920                 uint8_t *pixels[4];
921                 int pitch[4];
922                 if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
923                     sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
924                               0, frame->height, pixels, pitch);
925                     SDL_UnlockTexture(*tex);
926                 }
927             } else {
928                 av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
929                 ret = -1;
930             }
931             break;
932         case SDL_PIXELFORMAT_IYUV:
933             if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
934                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
935                                                        frame->data[1], frame->linesize[1],
936                                                        frame->data[2], frame->linesize[2]);
937             } else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
938                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height                    - 1), -frame->linesize[0],
939                                                        frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
940                                                        frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
941             } else {
942                 av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
943                 return -1;
944             }
945             break;
946         default:
947             if (frame->linesize[0] < 0) {
948                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
949             } else {
950                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
951             }
952             break;
953     }
954     return ret;
955 }
956
957 static void set_sdl_yuv_conversion_mode(AVFrame *frame)
958 {
959 #if SDL_VERSION_ATLEAST(2,0,8)
960     SDL_YUV_CONVERSION_MODE mode = SDL_YUV_CONVERSION_AUTOMATIC;
961     if (frame && (frame->format == AV_PIX_FMT_YUV420P || frame->format == AV_PIX_FMT_YUYV422 || frame->format == AV_PIX_FMT_UYVY422)) {
962         if (frame->color_range == AVCOL_RANGE_JPEG)
963             mode = SDL_YUV_CONVERSION_JPEG;
964         else if (frame->colorspace == AVCOL_SPC_BT709)
965             mode = SDL_YUV_CONVERSION_BT709;
966         else if (frame->colorspace == AVCOL_SPC_BT470BG || frame->colorspace == AVCOL_SPC_SMPTE170M || frame->colorspace == AVCOL_SPC_SMPTE240M)
967             mode = SDL_YUV_CONVERSION_BT601;
968     }
969     SDL_SetYUVConversionMode(mode);
970 #endif
971 }
972
973 static void video_image_display(VideoState *is)
974 {
975     Frame *vp;
976     Frame *sp = NULL;
977     SDL_Rect rect;
978
979     vp = frame_queue_peek_last(&is->pictq);
980     if (is->subtitle_st) {
981         if (frame_queue_nb_remaining(&is->subpq) > 0) {
982             sp = frame_queue_peek(&is->subpq);
983
984             if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
985                 if (!sp->uploaded) {
986                     uint8_t* pixels[4];
987                     int pitch[4];
988                     int i;
989                     if (!sp->width || !sp->height) {
990                         sp->width = vp->width;
991                         sp->height = vp->height;
992                     }
993                     if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
994                         return;
995
996                     for (i = 0; i < sp->sub.num_rects; i++) {
997                         AVSubtitleRect *sub_rect = sp->sub.rects[i];
998
999                         sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
1000                         sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
1001                         sub_rect->w = av_clip(sub_rect->w, 0, sp->width  - sub_rect->x);
1002                         sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
1003
1004                         is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
1005                             sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
1006                             sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
1007                             0, NULL, NULL, NULL);
1008                         if (!is->sub_convert_ctx) {
1009                             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1010                             return;
1011                         }
1012                         if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
1013                             sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
1014                                       0, sub_rect->h, pixels, pitch);
1015                             SDL_UnlockTexture(is->sub_texture);
1016                         }
1017                     }
1018                     sp->uploaded = 1;
1019                 }
1020             } else
1021                 sp = NULL;
1022         }
1023     }
1024
1025     calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1026
1027     if (!vp->uploaded) {
1028         if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
1029             return;
1030         vp->uploaded = 1;
1031         vp->flip_v = vp->frame->linesize[0] < 0;
1032     }
1033
1034     set_sdl_yuv_conversion_mode(vp->frame);
1035     SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
1036     set_sdl_yuv_conversion_mode(NULL);
1037     if (sp) {
1038 #if USE_ONEPASS_SUBTITLE_RENDER
1039         SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
1040 #else
1041         int i;
1042         double xratio = (double)rect.w / (double)sp->width;
1043         double yratio = (double)rect.h / (double)sp->height;
1044         for (i = 0; i < sp->sub.num_rects; i++) {
1045             SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
1046             SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
1047                                .y = rect.y + sub_rect->y * yratio,
1048                                .w = sub_rect->w * xratio,
1049                                .h = sub_rect->h * yratio};
1050             SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
1051         }
1052 #endif
1053     }
1054 }
1055
1056 static inline int compute_mod(int a, int b)
1057 {
1058     return a < 0 ? a%b + b : a%b;
1059 }
1060
1061 static void video_audio_display(VideoState *s)
1062 {
1063     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1064     int ch, channels, h, h2;
1065     int64_t time_diff;
1066     int rdft_bits, nb_freq;
1067
1068     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1069         ;
1070     nb_freq = 1 << (rdft_bits - 1);
1071
1072     /* compute display index : center on currently output samples */
1073     channels = s->audio_tgt.channels;
1074     nb_display_channels = channels;
1075     if (!s->paused) {
1076         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1077         n = 2 * channels;
1078         delay = s->audio_write_buf_size;
1079         delay /= n;
1080
1081         /* to be more precise, we take into account the time spent since
1082            the last buffer computation */
1083         if (audio_callback_time) {
1084             time_diff = av_gettime_relative() - audio_callback_time;
1085             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1086         }
1087
1088         delay += 2 * data_used;
1089         if (delay < data_used)
1090             delay = data_used;
1091
1092         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1093         if (s->show_mode == SHOW_MODE_WAVES) {
1094             h = INT_MIN;
1095             for (i = 0; i < 1000; i += channels) {
1096                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1097                 int a = s->sample_array[idx];
1098                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1099                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1100                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1101                 int score = a - d;
1102                 if (h < score && (b ^ c) < 0) {
1103                     h = score;
1104                     i_start = idx;
1105                 }
1106             }
1107         }
1108
1109         s->last_i_start = i_start;
1110     } else {
1111         i_start = s->last_i_start;
1112     }
1113
1114     if (s->show_mode == SHOW_MODE_WAVES) {
1115         SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
1116
1117         /* total height for one channel */
1118         h = s->height / nb_display_channels;
1119         /* graph height / 2 */
1120         h2 = (h * 9) / 20;
1121         for (ch = 0; ch < nb_display_channels; ch++) {
1122             i = i_start + ch;
1123             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1124             for (x = 0; x < s->width; x++) {
1125                 y = (s->sample_array[i] * h2) >> 15;
1126                 if (y < 0) {
1127                     y = -y;
1128                     ys = y1 - y;
1129                 } else {
1130                     ys = y1;
1131                 }
1132                 fill_rectangle(s->xleft + x, ys, 1, y);
1133                 i += channels;
1134                 if (i >= SAMPLE_ARRAY_SIZE)
1135                     i -= SAMPLE_ARRAY_SIZE;
1136             }
1137         }
1138
1139         SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
1140
1141         for (ch = 1; ch < nb_display_channels; ch++) {
1142             y = s->ytop + ch * h;
1143             fill_rectangle(s->xleft, y, s->width, 1);
1144         }
1145     } else {
1146         if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
1147             return;
1148
1149         nb_display_channels= FFMIN(nb_display_channels, 2);
1150         if (rdft_bits != s->rdft_bits) {
1151             av_rdft_end(s->rdft);
1152             av_free(s->rdft_data);
1153             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1154             s->rdft_bits = rdft_bits;
1155             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1156         }
1157         if (!s->rdft || !s->rdft_data){
1158             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1159             s->show_mode = SHOW_MODE_WAVES;
1160         } else {
1161             FFTSample *data[2];
1162             SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
1163             uint32_t *pixels;
1164             int pitch;
1165             for (ch = 0; ch < nb_display_channels; ch++) {
1166                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1167                 i = i_start + ch;
1168                 for (x = 0; x < 2 * nb_freq; x++) {
1169                     double w = (x-nb_freq) * (1.0 / nb_freq);
1170                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1171                     i += channels;
1172                     if (i >= SAMPLE_ARRAY_SIZE)
1173                         i -= SAMPLE_ARRAY_SIZE;
1174                 }
1175                 av_rdft_calc(s->rdft, data[ch]);
1176             }
1177             /* Least efficient way to do this, we should of course
1178              * directly access it but it is more than fast enough. */
1179             if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
1180                 pitch >>= 2;
1181                 pixels += pitch * s->height;
1182                 for (y = 0; y < s->height; y++) {
1183                     double w = 1 / sqrt(nb_freq);
1184                     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]));
1185                     int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1186                                                         : a;
1187                     a = FFMIN(a, 255);
1188                     b = FFMIN(b, 255);
1189                     pixels -= pitch;
1190                     *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
1191                 }
1192                 SDL_UnlockTexture(s->vis_texture);
1193             }
1194             SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
1195         }
1196         if (!s->paused)
1197             s->xpos++;
1198         if (s->xpos >= s->width)
1199             s->xpos= s->xleft;
1200     }
1201 }
1202
1203 static void stream_component_close(VideoState *is, int stream_index)
1204 {
1205     AVFormatContext *ic = is->ic;
1206     AVCodecParameters *codecpar;
1207
1208     if (stream_index < 0 || stream_index >= ic->nb_streams)
1209         return;
1210     codecpar = ic->streams[stream_index]->codecpar;
1211
1212     switch (codecpar->codec_type) {
1213     case AVMEDIA_TYPE_AUDIO:
1214         decoder_abort(&is->auddec, &is->sampq);
1215         SDL_CloseAudioDevice(audio_dev);
1216         decoder_destroy(&is->auddec);
1217         swr_free(&is->swr_ctx);
1218         av_freep(&is->audio_buf1);
1219         is->audio_buf1_size = 0;
1220         is->audio_buf = NULL;
1221
1222         if (is->rdft) {
1223             av_rdft_end(is->rdft);
1224             av_freep(&is->rdft_data);
1225             is->rdft = NULL;
1226             is->rdft_bits = 0;
1227         }
1228         break;
1229     case AVMEDIA_TYPE_VIDEO:
1230         decoder_abort(&is->viddec, &is->pictq);
1231         decoder_destroy(&is->viddec);
1232         break;
1233     case AVMEDIA_TYPE_SUBTITLE:
1234         decoder_abort(&is->subdec, &is->subpq);
1235         decoder_destroy(&is->subdec);
1236         break;
1237     default:
1238         break;
1239     }
1240
1241     ic->streams[stream_index]->discard = AVDISCARD_ALL;
1242     switch (codecpar->codec_type) {
1243     case AVMEDIA_TYPE_AUDIO:
1244         is->audio_st = NULL;
1245         is->audio_stream = -1;
1246         break;
1247     case AVMEDIA_TYPE_VIDEO:
1248         is->video_st = NULL;
1249         is->video_stream = -1;
1250         break;
1251     case AVMEDIA_TYPE_SUBTITLE:
1252         is->subtitle_st = NULL;
1253         is->subtitle_stream = -1;
1254         break;
1255     default:
1256         break;
1257     }
1258 }
1259
1260 static void stream_close(VideoState *is)
1261 {
1262     /* XXX: use a special url_shutdown call to abort parse cleanly */
1263     is->abort_request = 1;
1264     SDL_WaitThread(is->read_tid, NULL);
1265
1266     /* close each stream */
1267     if (is->audio_stream >= 0)
1268         stream_component_close(is, is->audio_stream);
1269     if (is->video_stream >= 0)
1270         stream_component_close(is, is->video_stream);
1271     if (is->subtitle_stream >= 0)
1272         stream_component_close(is, is->subtitle_stream);
1273
1274     avformat_close_input(&is->ic);
1275
1276     packet_queue_destroy(&is->videoq);
1277     packet_queue_destroy(&is->audioq);
1278     packet_queue_destroy(&is->subtitleq);
1279
1280     /* free all pictures */
1281     frame_queue_destory(&is->pictq);
1282     frame_queue_destory(&is->sampq);
1283     frame_queue_destory(&is->subpq);
1284     SDL_DestroyCond(is->continue_read_thread);
1285     sws_freeContext(is->img_convert_ctx);
1286     sws_freeContext(is->sub_convert_ctx);
1287     av_free(is->filename);
1288     if (is->vis_texture)
1289         SDL_DestroyTexture(is->vis_texture);
1290     if (is->vid_texture)
1291         SDL_DestroyTexture(is->vid_texture);
1292     if (is->sub_texture)
1293         SDL_DestroyTexture(is->sub_texture);
1294     av_free(is);
1295 }
1296
1297 static void do_exit(VideoState *is)
1298 {
1299     if (is) {
1300         stream_close(is);
1301     }
1302     if (renderer)
1303         SDL_DestroyRenderer(renderer);
1304     if (window)
1305         SDL_DestroyWindow(window);
1306     uninit_opts();
1307 #if CONFIG_AVFILTER
1308     av_freep(&vfilters_list);
1309 #endif
1310     avformat_network_deinit();
1311     if (show_status)
1312         printf("\n");
1313     SDL_Quit();
1314     av_log(NULL, AV_LOG_QUIET, "%s", "");
1315     exit(0);
1316 }
1317
1318 static void sigterm_handler(int sig)
1319 {
1320     exit(123);
1321 }
1322
1323 static void set_default_window_size(int width, int height, AVRational sar)
1324 {
1325     SDL_Rect rect;
1326     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1327     default_width  = rect.w;
1328     default_height = rect.h;
1329 }
1330
1331 static int video_open(VideoState *is)
1332 {
1333     int w,h;
1334
1335     if (screen_width) {
1336         w = screen_width;
1337         h = screen_height;
1338     } else {
1339         w = default_width;
1340         h = default_height;
1341     }
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, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
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
1960     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1961         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1962     if (strlen(aresample_swr_opts))
1963         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1964     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1965
1966     ret = snprintf(asrc_args, sizeof(asrc_args),
1967                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1968                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1969                    is->audio_filter_src.channels,
1970                    1, is->audio_filter_src.freq);
1971     if (is->audio_filter_src.channel_layout)
1972         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1973                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1974
1975     ret = avfilter_graph_create_filter(&filt_asrc,
1976                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1977                                        asrc_args, NULL, is->agraph);
1978     if (ret < 0)
1979         goto end;
1980
1981
1982     ret = avfilter_graph_create_filter(&filt_asink,
1983                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1984                                        NULL, NULL, is->agraph);
1985     if (ret < 0)
1986         goto end;
1987
1988     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1989         goto end;
1990     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1991         goto end;
1992
1993     if (force_output_format) {
1994         channel_layouts[0] = is->audio_tgt.channel_layout;
1995         channels       [0] = is->audio_tgt.channels;
1996         sample_rates   [0] = is->audio_tgt.freq;
1997         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1998             goto end;
1999         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2000             goto end;
2001         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2002             goto end;
2003         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2004             goto end;
2005     }
2006
2007
2008     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2009         goto end;
2010
2011     is->in_audio_filter  = filt_asrc;
2012     is->out_audio_filter = filt_asink;
2013
2014 end:
2015     if (ret < 0)
2016         avfilter_graph_free(&is->agraph);
2017     return ret;
2018 }
2019 #endif  /* CONFIG_AVFILTER */
2020
2021 static int audio_thread(void *arg)
2022 {
2023     VideoState *is = arg;
2024     AVFrame *frame = av_frame_alloc();
2025     Frame *af;
2026 #if CONFIG_AVFILTER
2027     int last_serial = -1;
2028     int64_t dec_channel_layout;
2029     int reconfigure;
2030 #endif
2031     int got_frame = 0;
2032     AVRational tb;
2033     int ret = 0;
2034
2035     if (!frame)
2036         return AVERROR(ENOMEM);
2037
2038     do {
2039         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2040             goto the_end;
2041
2042         if (got_frame) {
2043                 tb = (AVRational){1, frame->sample_rate};
2044
2045 #if CONFIG_AVFILTER
2046                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
2047
2048                 reconfigure =
2049                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2050                                    frame->format, frame->channels)    ||
2051                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2052                     is->audio_filter_src.freq           != frame->sample_rate ||
2053                     is->auddec.pkt_serial               != last_serial;
2054
2055                 if (reconfigure) {
2056                     char buf1[1024], buf2[1024];
2057                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2058                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2059                     av_log(NULL, AV_LOG_DEBUG,
2060                            "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",
2061                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2062                            frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2063
2064                     is->audio_filter_src.fmt            = frame->format;
2065                     is->audio_filter_src.channels       = frame->channels;
2066                     is->audio_filter_src.channel_layout = dec_channel_layout;
2067                     is->audio_filter_src.freq           = frame->sample_rate;
2068                     last_serial                         = is->auddec.pkt_serial;
2069
2070                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2071                         goto the_end;
2072                 }
2073
2074             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2075                 goto the_end;
2076
2077             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2078                 tb = av_buffersink_get_time_base(is->out_audio_filter);
2079 #endif
2080                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2081                     goto the_end;
2082
2083                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2084                 af->pos = frame->pkt_pos;
2085                 af->serial = is->auddec.pkt_serial;
2086                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2087
2088                 av_frame_move_ref(af->frame, frame);
2089                 frame_queue_push(&is->sampq);
2090
2091 #if CONFIG_AVFILTER
2092                 if (is->audioq.serial != is->auddec.pkt_serial)
2093                     break;
2094             }
2095             if (ret == AVERROR_EOF)
2096                 is->auddec.finished = is->auddec.pkt_serial;
2097 #endif
2098         }
2099     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2100  the_end:
2101 #if CONFIG_AVFILTER
2102     avfilter_graph_free(&is->agraph);
2103 #endif
2104     av_frame_free(&frame);
2105     return ret;
2106 }
2107
2108 static int decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2109 {
2110     packet_queue_start(d->queue);
2111     d->decoder_tid = SDL_CreateThread(fn, "decoder", arg);
2112     if (!d->decoder_tid) {
2113         av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2114         return AVERROR(ENOMEM);
2115     }
2116     return 0;
2117 }
2118
2119 static int video_thread(void *arg)
2120 {
2121     VideoState *is = arg;
2122     AVFrame *frame = av_frame_alloc();
2123     double pts;
2124     double duration;
2125     int ret;
2126     AVRational tb = is->video_st->time_base;
2127     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2128
2129 #if CONFIG_AVFILTER
2130     AVFilterGraph *graph = avfilter_graph_alloc();
2131     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2132     int last_w = 0;
2133     int last_h = 0;
2134     enum AVPixelFormat last_format = -2;
2135     int last_serial = -1;
2136     int last_vfilter_idx = 0;
2137     if (!graph) {
2138         av_frame_free(&frame);
2139         return AVERROR(ENOMEM);
2140     }
2141
2142 #endif
2143
2144     if (!frame) {
2145 #if CONFIG_AVFILTER
2146         avfilter_graph_free(&graph);
2147 #endif
2148         return AVERROR(ENOMEM);
2149     }
2150
2151     for (;;) {
2152         ret = get_video_frame(is, frame);
2153         if (ret < 0)
2154             goto the_end;
2155         if (!ret)
2156             continue;
2157
2158 #if CONFIG_AVFILTER
2159         if (   last_w != frame->width
2160             || last_h != frame->height
2161             || last_format != frame->format
2162             || last_serial != is->viddec.pkt_serial
2163             || last_vfilter_idx != is->vfilter_idx) {
2164             av_log(NULL, AV_LOG_DEBUG,
2165                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2166                    last_w, last_h,
2167                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2168                    frame->width, frame->height,
2169                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2170             avfilter_graph_free(&graph);
2171             graph = avfilter_graph_alloc();
2172             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2173                 SDL_Event event;
2174                 event.type = FF_QUIT_EVENT;
2175                 event.user.data1 = is;
2176                 SDL_PushEvent(&event);
2177                 goto the_end;
2178             }
2179             filt_in  = is->in_video_filter;
2180             filt_out = is->out_video_filter;
2181             last_w = frame->width;
2182             last_h = frame->height;
2183             last_format = frame->format;
2184             last_serial = is->viddec.pkt_serial;
2185             last_vfilter_idx = is->vfilter_idx;
2186             frame_rate = av_buffersink_get_frame_rate(filt_out);
2187         }
2188
2189         ret = av_buffersrc_add_frame(filt_in, frame);
2190         if (ret < 0)
2191             goto the_end;
2192
2193         while (ret >= 0) {
2194             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2195
2196             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2197             if (ret < 0) {
2198                 if (ret == AVERROR_EOF)
2199                     is->viddec.finished = is->viddec.pkt_serial;
2200                 ret = 0;
2201                 break;
2202             }
2203
2204             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2205             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2206                 is->frame_last_filter_delay = 0;
2207             tb = av_buffersink_get_time_base(filt_out);
2208 #endif
2209             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2210             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2211             ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
2212             av_frame_unref(frame);
2213 #if CONFIG_AVFILTER
2214             if (is->videoq.serial != is->viddec.pkt_serial)
2215                 break;
2216         }
2217 #endif
2218
2219         if (ret < 0)
2220             goto the_end;
2221     }
2222  the_end:
2223 #if CONFIG_AVFILTER
2224     avfilter_graph_free(&graph);
2225 #endif
2226     av_frame_free(&frame);
2227     return 0;
2228 }
2229
2230 static int subtitle_thread(void *arg)
2231 {
2232     VideoState *is = arg;
2233     Frame *sp;
2234     int got_subtitle;
2235     double pts;
2236
2237     for (;;) {
2238         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2239             return 0;
2240
2241         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2242             break;
2243
2244         pts = 0;
2245
2246         if (got_subtitle && sp->sub.format == 0) {
2247             if (sp->sub.pts != AV_NOPTS_VALUE)
2248                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2249             sp->pts = pts;
2250             sp->serial = is->subdec.pkt_serial;
2251             sp->width = is->subdec.avctx->width;
2252             sp->height = is->subdec.avctx->height;
2253             sp->uploaded = 0;
2254
2255             /* now we can update the picture count */
2256             frame_queue_push(&is->subpq);
2257         } else if (got_subtitle) {
2258             avsubtitle_free(&sp->sub);
2259         }
2260     }
2261     return 0;
2262 }
2263
2264 /* copy samples for viewing in editor window */
2265 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2266 {
2267     int size, len;
2268
2269     size = samples_size / sizeof(short);
2270     while (size > 0) {
2271         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2272         if (len > size)
2273             len = size;
2274         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2275         samples += len;
2276         is->sample_array_index += len;
2277         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2278             is->sample_array_index = 0;
2279         size -= len;
2280     }
2281 }
2282
2283 /* return the wanted number of samples to get better sync if sync_type is video
2284  * or external master clock */
2285 static int synchronize_audio(VideoState *is, int nb_samples)
2286 {
2287     int wanted_nb_samples = nb_samples;
2288
2289     /* if not master, then we try to remove or add samples to correct the clock */
2290     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2291         double diff, avg_diff;
2292         int min_nb_samples, max_nb_samples;
2293
2294         diff = get_clock(&is->audclk) - get_master_clock(is);
2295
2296         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2297             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2298             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2299                 /* not enough measures to have a correct estimate */
2300                 is->audio_diff_avg_count++;
2301             } else {
2302                 /* estimate the A-V difference */
2303                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2304
2305                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2306                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2307                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2308                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2309                     wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2310                 }
2311                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2312                         diff, avg_diff, wanted_nb_samples - nb_samples,
2313                         is->audio_clock, is->audio_diff_threshold);
2314             }
2315         } else {
2316             /* too big difference : may be initial PTS errors, so
2317                reset A-V filter */
2318             is->audio_diff_avg_count = 0;
2319             is->audio_diff_cum       = 0;
2320         }
2321     }
2322
2323     return wanted_nb_samples;
2324 }
2325
2326 /**
2327  * Decode one audio frame and return its uncompressed size.
2328  *
2329  * The processed audio frame is decoded, converted if required, and
2330  * stored in is->audio_buf, with size in bytes given by the return
2331  * value.
2332  */
2333 static int audio_decode_frame(VideoState *is)
2334 {
2335     int data_size, resampled_data_size;
2336     int64_t dec_channel_layout;
2337     av_unused double audio_clock0;
2338     int wanted_nb_samples;
2339     Frame *af;
2340
2341     if (is->paused)
2342         return -1;
2343
2344     do {
2345 #if defined(_WIN32)
2346         while (frame_queue_nb_remaining(&is->sampq) == 0) {
2347             if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2348                 return -1;
2349             av_usleep (1000);
2350         }
2351 #endif
2352         if (!(af = frame_queue_peek_readable(&is->sampq)))
2353             return -1;
2354         frame_queue_next(&is->sampq);
2355     } while (af->serial != is->audioq.serial);
2356
2357     data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
2358                                            af->frame->nb_samples,
2359                                            af->frame->format, 1);
2360
2361     dec_channel_layout =
2362         (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2363         af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
2364     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2365
2366     if (af->frame->format        != is->audio_src.fmt            ||
2367         dec_channel_layout       != is->audio_src.channel_layout ||
2368         af->frame->sample_rate   != is->audio_src.freq           ||
2369         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2370         swr_free(&is->swr_ctx);
2371         is->swr_ctx = swr_alloc_set_opts(NULL,
2372                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2373                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2374                                          0, NULL);
2375         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2376             av_log(NULL, AV_LOG_ERROR,
2377                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2378                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
2379                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2380             swr_free(&is->swr_ctx);
2381             return -1;
2382         }
2383         is->audio_src.channel_layout = dec_channel_layout;
2384         is->audio_src.channels       = af->frame->channels;
2385         is->audio_src.freq = af->frame->sample_rate;
2386         is->audio_src.fmt = af->frame->format;
2387     }
2388
2389     if (is->swr_ctx) {
2390         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2391         uint8_t **out = &is->audio_buf1;
2392         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2393         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2394         int len2;
2395         if (out_size < 0) {
2396             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2397             return -1;
2398         }
2399         if (wanted_nb_samples != af->frame->nb_samples) {
2400             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2401                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2402                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2403                 return -1;
2404             }
2405         }
2406         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2407         if (!is->audio_buf1)
2408             return AVERROR(ENOMEM);
2409         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2410         if (len2 < 0) {
2411             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2412             return -1;
2413         }
2414         if (len2 == out_count) {
2415             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2416             if (swr_init(is->swr_ctx) < 0)
2417                 swr_free(&is->swr_ctx);
2418         }
2419         is->audio_buf = is->audio_buf1;
2420         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2421     } else {
2422         is->audio_buf = af->frame->data[0];
2423         resampled_data_size = data_size;
2424     }
2425
2426     audio_clock0 = is->audio_clock;
2427     /* update the audio clock with the pts */
2428     if (!isnan(af->pts))
2429         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2430     else
2431         is->audio_clock = NAN;
2432     is->audio_clock_serial = af->serial;
2433 #ifdef DEBUG
2434     {
2435         static double last_clock;
2436         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2437                is->audio_clock - last_clock,
2438                is->audio_clock, audio_clock0);
2439         last_clock = is->audio_clock;
2440     }
2441 #endif
2442     return resampled_data_size;
2443 }
2444
2445 /* prepare a new audio buffer */
2446 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2447 {
2448     VideoState *is = opaque;
2449     int audio_size, len1;
2450
2451     audio_callback_time = av_gettime_relative();
2452
2453     while (len > 0) {
2454         if (is->audio_buf_index >= is->audio_buf_size) {
2455            audio_size = audio_decode_frame(is);
2456            if (audio_size < 0) {
2457                 /* if error, just output silence */
2458                is->audio_buf = NULL;
2459                is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2460            } else {
2461                if (is->show_mode != SHOW_MODE_VIDEO)
2462                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2463                is->audio_buf_size = audio_size;
2464            }
2465            is->audio_buf_index = 0;
2466         }
2467         len1 = is->audio_buf_size - is->audio_buf_index;
2468         if (len1 > len)
2469             len1 = len;
2470         if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
2471             memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2472         else {
2473             memset(stream, 0, len1);
2474             if (!is->muted && is->audio_buf)
2475                 SDL_MixAudioFormat(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, AUDIO_S16SYS, len1, is->audio_volume);
2476         }
2477         len -= len1;
2478         stream += len1;
2479         is->audio_buf_index += len1;
2480     }
2481     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2482     /* Let's assume the audio driver that is used by SDL has two periods. */
2483     if (!isnan(is->audio_clock)) {
2484         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);
2485         sync_clock_to_slave(&is->extclk, &is->audclk);
2486     }
2487 }
2488
2489 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2490 {
2491     SDL_AudioSpec wanted_spec, spec;
2492     const char *env;
2493     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2494     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2495     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2496
2497     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2498     if (env) {
2499         wanted_nb_channels = atoi(env);
2500         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2501     }
2502     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2503         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2504         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2505     }
2506     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2507     wanted_spec.channels = wanted_nb_channels;
2508     wanted_spec.freq = wanted_sample_rate;
2509     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2510         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2511         return -1;
2512     }
2513     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2514         next_sample_rate_idx--;
2515     wanted_spec.format = AUDIO_S16SYS;
2516     wanted_spec.silence = 0;
2517     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2518     wanted_spec.callback = sdl_audio_callback;
2519     wanted_spec.userdata = opaque;
2520     while (!(audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &spec, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE))) {
2521         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2522                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2523         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2524         if (!wanted_spec.channels) {
2525             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2526             wanted_spec.channels = wanted_nb_channels;
2527             if (!wanted_spec.freq) {
2528                 av_log(NULL, AV_LOG_ERROR,
2529                        "No more combinations to try, audio open failed\n");
2530                 return -1;
2531             }
2532         }
2533         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2534     }
2535     if (spec.format != AUDIO_S16SYS) {
2536         av_log(NULL, AV_LOG_ERROR,
2537                "SDL advised audio format %d is not supported!\n", spec.format);
2538         return -1;
2539     }
2540     if (spec.channels != wanted_spec.channels) {
2541         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2542         if (!wanted_channel_layout) {
2543             av_log(NULL, AV_LOG_ERROR,
2544                    "SDL advised channel count %d is not supported!\n", spec.channels);
2545             return -1;
2546         }
2547     }
2548
2549     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2550     audio_hw_params->freq = spec.freq;
2551     audio_hw_params->channel_layout = wanted_channel_layout;
2552     audio_hw_params->channels =  spec.channels;
2553     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2554     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);
2555     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2556         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2557         return -1;
2558     }
2559     return spec.size;
2560 }
2561
2562 /* open a given stream. Return 0 if OK */
2563 static int stream_component_open(VideoState *is, int stream_index)
2564 {
2565     AVFormatContext *ic = is->ic;
2566     AVCodecContext *avctx;
2567     AVCodec *codec;
2568     const char *forced_codec_name = NULL;
2569     AVDictionary *opts = NULL;
2570     AVDictionaryEntry *t = NULL;
2571     int sample_rate, nb_channels;
2572     int64_t channel_layout;
2573     int ret = 0;
2574     int stream_lowres = lowres;
2575
2576     if (stream_index < 0 || stream_index >= ic->nb_streams)
2577         return -1;
2578
2579     avctx = avcodec_alloc_context3(NULL);
2580     if (!avctx)
2581         return AVERROR(ENOMEM);
2582
2583     ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
2584     if (ret < 0)
2585         goto fail;
2586     avctx->pkt_timebase = ic->streams[stream_index]->time_base;
2587
2588     codec = avcodec_find_decoder(avctx->codec_id);
2589
2590     switch(avctx->codec_type){
2591         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2592         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2593         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2594     }
2595     if (forced_codec_name)
2596         codec = avcodec_find_decoder_by_name(forced_codec_name);
2597     if (!codec) {
2598         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2599                                       "No codec could be found with name '%s'\n", forced_codec_name);
2600         else                   av_log(NULL, AV_LOG_WARNING,
2601                                       "No decoder could be found for codec %s\n", avcodec_get_name(avctx->codec_id));
2602         ret = AVERROR(EINVAL);
2603         goto fail;
2604     }
2605
2606     avctx->codec_id = codec->id;
2607     if (stream_lowres > codec->max_lowres) {
2608         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2609                 codec->max_lowres);
2610         stream_lowres = codec->max_lowres;
2611     }
2612     avctx->lowres = stream_lowres;
2613
2614     if (fast)
2615         avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2616
2617     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2618     if (!av_dict_get(opts, "threads", NULL, 0))
2619         av_dict_set(&opts, "threads", "auto", 0);
2620     if (stream_lowres)
2621         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2622     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2623         av_dict_set(&opts, "refcounted_frames", "1", 0);
2624     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2625         goto fail;
2626     }
2627     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2628         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2629         ret =  AVERROR_OPTION_NOT_FOUND;
2630         goto fail;
2631     }
2632
2633     is->eof = 0;
2634     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2635     switch (avctx->codec_type) {
2636     case AVMEDIA_TYPE_AUDIO:
2637 #if CONFIG_AVFILTER
2638         {
2639             AVFilterContext *sink;
2640
2641             is->audio_filter_src.freq           = avctx->sample_rate;
2642             is->audio_filter_src.channels       = avctx->channels;
2643             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2644             is->audio_filter_src.fmt            = avctx->sample_fmt;
2645             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2646                 goto fail;
2647             sink = is->out_audio_filter;
2648             sample_rate    = av_buffersink_get_sample_rate(sink);
2649             nb_channels    = av_buffersink_get_channels(sink);
2650             channel_layout = av_buffersink_get_channel_layout(sink);
2651         }
2652 #else
2653         sample_rate    = avctx->sample_rate;
2654         nb_channels    = avctx->channels;
2655         channel_layout = avctx->channel_layout;
2656 #endif
2657
2658         /* prepare audio output */
2659         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2660             goto fail;
2661         is->audio_hw_buf_size = ret;
2662         is->audio_src = is->audio_tgt;
2663         is->audio_buf_size  = 0;
2664         is->audio_buf_index = 0;
2665
2666         /* init averaging filter */
2667         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2668         is->audio_diff_avg_count = 0;
2669         /* since we do not have a precise anough audio FIFO fullness,
2670            we correct audio sync only if larger than this threshold */
2671         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2672
2673         is->audio_stream = stream_index;
2674         is->audio_st = ic->streams[stream_index];
2675
2676         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2677         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2678             is->auddec.start_pts = is->audio_st->start_time;
2679             is->auddec.start_pts_tb = is->audio_st->time_base;
2680         }
2681         if ((ret = decoder_start(&is->auddec, audio_thread, is)) < 0)
2682             goto out;
2683         SDL_PauseAudioDevice(audio_dev, 0);
2684         break;
2685     case AVMEDIA_TYPE_VIDEO:
2686         is->video_stream = stream_index;
2687         is->video_st = ic->streams[stream_index];
2688
2689         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2690         if ((ret = decoder_start(&is->viddec, video_thread, is)) < 0)
2691             goto out;
2692         is->queue_attachments_req = 1;
2693         break;
2694     case AVMEDIA_TYPE_SUBTITLE:
2695         is->subtitle_stream = stream_index;
2696         is->subtitle_st = ic->streams[stream_index];
2697
2698         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2699         if ((ret = decoder_start(&is->subdec, subtitle_thread, is)) < 0)
2700             goto out;
2701         break;
2702     default:
2703         break;
2704     }
2705     goto out;
2706
2707 fail:
2708     avcodec_free_context(&avctx);
2709 out:
2710     av_dict_free(&opts);
2711
2712     return ret;
2713 }
2714
2715 static int decode_interrupt_cb(void *ctx)
2716 {
2717     VideoState *is = ctx;
2718     return is->abort_request;
2719 }
2720
2721 static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
2722     return stream_id < 0 ||
2723            queue->abort_request ||
2724            (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
2725            queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
2726 }
2727
2728 static int is_realtime(AVFormatContext *s)
2729 {
2730     if(   !strcmp(s->iformat->name, "rtp")
2731        || !strcmp(s->iformat->name, "rtsp")
2732        || !strcmp(s->iformat->name, "sdp")
2733     )
2734         return 1;
2735
2736     if(s->pb && (   !strncmp(s->url, "rtp:", 4)
2737                  || !strncmp(s->url, "udp:", 4)
2738                 )
2739     )
2740         return 1;
2741     return 0;
2742 }
2743
2744 /* this thread gets the stream from the disk or the network */
2745 static int read_thread(void *arg)
2746 {
2747     VideoState *is = arg;
2748     AVFormatContext *ic = NULL;
2749     int err, i, ret;
2750     int st_index[AVMEDIA_TYPE_NB];
2751     AVPacket pkt1, *pkt = &pkt1;
2752     int64_t stream_start_time;
2753     int pkt_in_play_range = 0;
2754     AVDictionaryEntry *t;
2755     SDL_mutex *wait_mutex = SDL_CreateMutex();
2756     int scan_all_pmts_set = 0;
2757     int64_t pkt_ts;
2758
2759     if (!wait_mutex) {
2760         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2761         ret = AVERROR(ENOMEM);
2762         goto fail;
2763     }
2764
2765     memset(st_index, -1, sizeof(st_index));
2766     is->last_video_stream = is->video_stream = -1;
2767     is->last_audio_stream = is->audio_stream = -1;
2768     is->last_subtitle_stream = is->subtitle_stream = -1;
2769     is->eof = 0;
2770
2771     ic = avformat_alloc_context();
2772     if (!ic) {
2773         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2774         ret = AVERROR(ENOMEM);
2775         goto fail;
2776     }
2777     ic->interrupt_callback.callback = decode_interrupt_cb;
2778     ic->interrupt_callback.opaque = is;
2779     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2780         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2781         scan_all_pmts_set = 1;
2782     }
2783     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2784     if (err < 0) {
2785         print_error(is->filename, err);
2786         ret = -1;
2787         goto fail;
2788     }
2789     if (scan_all_pmts_set)
2790         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2791
2792     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2793         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2794         ret = AVERROR_OPTION_NOT_FOUND;
2795         goto fail;
2796     }
2797     is->ic = ic;
2798
2799     if (genpts)
2800         ic->flags |= AVFMT_FLAG_GENPTS;
2801
2802     av_format_inject_global_side_data(ic);
2803
2804     if (find_stream_info) {
2805         AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
2806         int orig_nb_streams = ic->nb_streams;
2807
2808         err = avformat_find_stream_info(ic, opts);
2809
2810         for (i = 0; i < orig_nb_streams; i++)
2811             av_dict_free(&opts[i]);
2812         av_freep(&opts);
2813
2814         if (err < 0) {
2815             av_log(NULL, AV_LOG_WARNING,
2816                    "%s: could not find codec parameters\n", is->filename);
2817             ret = -1;
2818             goto fail;
2819         }
2820     }
2821
2822     if (ic->pb)
2823         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2824
2825     if (seek_by_bytes < 0)
2826         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2827
2828     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2829
2830     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2831         window_title = av_asprintf("%s - %s", t->value, input_filename);
2832
2833     /* if seeking requested, we execute it */
2834     if (start_time != AV_NOPTS_VALUE) {
2835         int64_t timestamp;
2836
2837         timestamp = start_time;
2838         /* add the stream start time */
2839         if (ic->start_time != AV_NOPTS_VALUE)
2840             timestamp += ic->start_time;
2841         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2842         if (ret < 0) {
2843             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2844                     is->filename, (double)timestamp / AV_TIME_BASE);
2845         }
2846     }
2847
2848     is->realtime = is_realtime(ic);
2849
2850     if (show_status)
2851         av_dump_format(ic, 0, is->filename, 0);
2852
2853     for (i = 0; i < ic->nb_streams; i++) {
2854         AVStream *st = ic->streams[i];
2855         enum AVMediaType type = st->codecpar->codec_type;
2856         st->discard = AVDISCARD_ALL;
2857         if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
2858             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2859                 st_index[type] = i;
2860     }
2861     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2862         if (wanted_stream_spec[i] && st_index[i] == -1) {
2863             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));
2864             st_index[i] = INT_MAX;
2865         }
2866     }
2867
2868     if (!video_disable)
2869         st_index[AVMEDIA_TYPE_VIDEO] =
2870             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2871                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2872     if (!audio_disable)
2873         st_index[AVMEDIA_TYPE_AUDIO] =
2874             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2875                                 st_index[AVMEDIA_TYPE_AUDIO],
2876                                 st_index[AVMEDIA_TYPE_VIDEO],
2877                                 NULL, 0);
2878     if (!video_disable && !subtitle_disable)
2879         st_index[AVMEDIA_TYPE_SUBTITLE] =
2880             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2881                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2882                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2883                                  st_index[AVMEDIA_TYPE_AUDIO] :
2884                                  st_index[AVMEDIA_TYPE_VIDEO]),
2885                                 NULL, 0);
2886
2887     is->show_mode = show_mode;
2888     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2889         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2890         AVCodecParameters *codecpar = st->codecpar;
2891         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2892         if (codecpar->width)
2893             set_default_window_size(codecpar->width, codecpar->height, sar);
2894     }
2895
2896     /* open the streams */
2897     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2898         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2899     }
2900
2901     ret = -1;
2902     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2903         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2904     }
2905     if (is->show_mode == SHOW_MODE_NONE)
2906         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2907
2908     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2909         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2910     }
2911
2912     if (is->video_stream < 0 && is->audio_stream < 0) {
2913         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2914                is->filename);
2915         ret = -1;
2916         goto fail;
2917     }
2918
2919     if (infinite_buffer < 0 && is->realtime)
2920         infinite_buffer = 1;
2921
2922     for (;;) {
2923         if (is->abort_request)
2924             break;
2925         if (is->paused != is->last_paused) {
2926             is->last_paused = is->paused;
2927             if (is->paused)
2928                 is->read_pause_return = av_read_pause(ic);
2929             else
2930                 av_read_play(ic);
2931         }
2932 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2933         if (is->paused &&
2934                 (!strcmp(ic->iformat->name, "rtsp") ||
2935                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2936             /* wait 10 ms to avoid trying to get another packet */
2937             /* XXX: horrible */
2938             SDL_Delay(10);
2939             continue;
2940         }
2941 #endif
2942         if (is->seek_req) {
2943             int64_t seek_target = is->seek_pos;
2944             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2945             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2946 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2947 //      of the seek_pos/seek_rel variables
2948
2949             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2950             if (ret < 0) {
2951                 av_log(NULL, AV_LOG_ERROR,
2952                        "%s: error while seeking\n", is->ic->url);
2953             } else {
2954                 if (is->audio_stream >= 0) {
2955                     packet_queue_flush(&is->audioq);
2956                     packet_queue_put(&is->audioq, &flush_pkt);
2957                 }
2958                 if (is->subtitle_stream >= 0) {
2959                     packet_queue_flush(&is->subtitleq);
2960                     packet_queue_put(&is->subtitleq, &flush_pkt);
2961                 }
2962                 if (is->video_stream >= 0) {
2963                     packet_queue_flush(&is->videoq);
2964                     packet_queue_put(&is->videoq, &flush_pkt);
2965                 }
2966                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2967                    set_clock(&is->extclk, NAN, 0);
2968                 } else {
2969                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2970                 }
2971             }
2972             is->seek_req = 0;
2973             is->queue_attachments_req = 1;
2974             is->eof = 0;
2975             if (is->paused)
2976                 step_to_next_frame(is);
2977         }
2978         if (is->queue_attachments_req) {
2979             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2980                 AVPacket copy = { 0 };
2981                 if ((ret = av_packet_ref(&copy, &is->video_st->attached_pic)) < 0)
2982                     goto fail;
2983                 packet_queue_put(&is->videoq, &copy);
2984                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2985             }
2986             is->queue_attachments_req = 0;
2987         }
2988
2989         /* if the queue are full, no need to read more */
2990         if (infinite_buffer<1 &&
2991               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2992             || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
2993                 stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
2994                 stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
2995             /* wait 10 ms */
2996             SDL_LockMutex(wait_mutex);
2997             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2998             SDL_UnlockMutex(wait_mutex);
2999             continue;
3000         }
3001         if (!is->paused &&
3002             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3003             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3004             if (loop != 1 && (!loop || --loop)) {
3005                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3006             } else if (autoexit) {
3007                 ret = AVERROR_EOF;
3008                 goto fail;
3009             }
3010         }
3011         ret = av_read_frame(ic, pkt);
3012         if (ret < 0) {
3013             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3014                 if (is->video_stream >= 0)
3015                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3016                 if (is->audio_stream >= 0)
3017                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3018                 if (is->subtitle_stream >= 0)
3019                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3020                 is->eof = 1;
3021             }
3022             if (ic->pb && ic->pb->error)
3023                 break;
3024             SDL_LockMutex(wait_mutex);
3025             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3026             SDL_UnlockMutex(wait_mutex);
3027             continue;
3028         } else {
3029             is->eof = 0;
3030         }
3031         /* check if packet is in play range specified by user, then queue, otherwise discard */
3032         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3033         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3034         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3035                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3036                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3037                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3038                 <= ((double)duration / 1000000);
3039         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3040             packet_queue_put(&is->audioq, pkt);
3041         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3042                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3043             packet_queue_put(&is->videoq, pkt);
3044         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3045             packet_queue_put(&is->subtitleq, pkt);
3046         } else {
3047             av_packet_unref(pkt);
3048         }
3049     }
3050
3051     ret = 0;
3052  fail:
3053     if (ic && !is->ic)
3054         avformat_close_input(&ic);
3055
3056     if (ret != 0) {
3057         SDL_Event event;
3058
3059         event.type = FF_QUIT_EVENT;
3060         event.user.data1 = is;
3061         SDL_PushEvent(&event);
3062     }
3063     SDL_DestroyMutex(wait_mutex);
3064     return 0;
3065 }
3066
3067 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3068 {
3069     VideoState *is;
3070
3071     is = av_mallocz(sizeof(VideoState));
3072     if (!is)
3073         return NULL;
3074     is->filename = av_strdup(filename);
3075     if (!is->filename)
3076         goto fail;
3077     is->iformat = iformat;
3078     is->ytop    = 0;
3079     is->xleft   = 0;
3080
3081     /* start video display */
3082     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3083         goto fail;
3084     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3085         goto fail;
3086     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3087         goto fail;
3088
3089     if (packet_queue_init(&is->videoq) < 0 ||
3090         packet_queue_init(&is->audioq) < 0 ||
3091         packet_queue_init(&is->subtitleq) < 0)
3092         goto fail;
3093
3094     if (!(is->continue_read_thread = SDL_CreateCond())) {
3095         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3096         goto fail;
3097     }
3098
3099     init_clock(&is->vidclk, &is->videoq.serial);
3100     init_clock(&is->audclk, &is->audioq.serial);
3101     init_clock(&is->extclk, &is->extclk.serial);
3102     is->audio_clock_serial = -1;
3103     if (startup_volume < 0)
3104         av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
3105     if (startup_volume > 100)
3106         av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
3107     startup_volume = av_clip(startup_volume, 0, 100);
3108     startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
3109     is->audio_volume = startup_volume;
3110     is->muted = 0;
3111     is->av_sync_type = av_sync_type;
3112     is->read_tid     = SDL_CreateThread(read_thread, "read_thread", is);
3113     if (!is->read_tid) {
3114         av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3115 fail:
3116         stream_close(is);
3117         return NULL;
3118     }
3119     return is;
3120 }
3121
3122 static void stream_cycle_channel(VideoState *is, int codec_type)
3123 {
3124     AVFormatContext *ic = is->ic;
3125     int start_index, stream_index;
3126     int old_index;
3127     AVStream *st;
3128     AVProgram *p = NULL;
3129     int nb_streams = is->ic->nb_streams;
3130
3131     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3132         start_index = is->last_video_stream;
3133         old_index = is->video_stream;
3134     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3135         start_index = is->last_audio_stream;
3136         old_index = is->audio_stream;
3137     } else {
3138         start_index = is->last_subtitle_stream;
3139         old_index = is->subtitle_stream;
3140     }
3141     stream_index = start_index;
3142
3143     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3144         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3145         if (p) {
3146             nb_streams = p->nb_stream_indexes;
3147             for (start_index = 0; start_index < nb_streams; start_index++)
3148                 if (p->stream_index[start_index] == stream_index)
3149                     break;
3150             if (start_index == nb_streams)
3151                 start_index = -1;
3152             stream_index = start_index;
3153         }
3154     }
3155
3156     for (;;) {
3157         if (++stream_index >= nb_streams)
3158         {
3159             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3160             {
3161                 stream_index = -1;
3162                 is->last_subtitle_stream = -1;
3163                 goto the_end;
3164             }
3165             if (start_index == -1)
3166                 return;
3167             stream_index = 0;
3168         }
3169         if (stream_index == start_index)
3170             return;
3171         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3172         if (st->codecpar->codec_type == codec_type) {
3173             /* check that parameters are OK */
3174             switch (codec_type) {
3175             case AVMEDIA_TYPE_AUDIO:
3176                 if (st->codecpar->sample_rate != 0 &&
3177                     st->codecpar->channels != 0)
3178                     goto the_end;
3179                 break;
3180             case AVMEDIA_TYPE_VIDEO:
3181             case AVMEDIA_TYPE_SUBTITLE:
3182                 goto the_end;
3183             default:
3184                 break;
3185             }
3186         }
3187     }
3188  the_end:
3189     if (p && stream_index != -1)
3190         stream_index = p->stream_index[stream_index];
3191     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3192            av_get_media_type_string(codec_type),
3193            old_index,
3194            stream_index);
3195
3196     stream_component_close(is, old_index);
3197     stream_component_open(is, stream_index);
3198 }
3199
3200
3201 static void toggle_full_screen(VideoState *is)
3202 {
3203     is_full_screen = !is_full_screen;
3204     SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
3205 }
3206
3207 static void toggle_audio_display(VideoState *is)
3208 {
3209     int next = is->show_mode;
3210     do {
3211         next = (next + 1) % SHOW_MODE_NB;
3212     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3213     if (is->show_mode != next) {
3214         is->force_refresh = 1;
3215         is->show_mode = next;
3216     }
3217 }
3218
3219 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3220     double remaining_time = 0.0;
3221     SDL_PumpEvents();
3222     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
3223         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3224             SDL_ShowCursor(0);
3225             cursor_hidden = 1;
3226         }
3227         if (remaining_time > 0.0)
3228             av_usleep((int64_t)(remaining_time * 1000000.0));
3229         remaining_time = REFRESH_RATE;
3230         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3231             video_refresh(is, &remaining_time);
3232         SDL_PumpEvents();
3233     }
3234 }
3235
3236 static void seek_chapter(VideoState *is, int incr)
3237 {
3238     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3239     int i;
3240
3241     if (!is->ic->nb_chapters)
3242         return;
3243
3244     /* find the current chapter */
3245     for (i = 0; i < is->ic->nb_chapters; i++) {
3246         AVChapter *ch = is->ic->chapters[i];
3247         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3248             i--;
3249             break;
3250         }
3251     }
3252
3253     i += incr;
3254     i = FFMAX(i, 0);
3255     if (i >= is->ic->nb_chapters)
3256         return;
3257
3258     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3259     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3260                                  AV_TIME_BASE_Q), 0, 0);
3261 }
3262
3263 /* handle an event sent by the GUI */
3264 static void event_loop(VideoState *cur_stream)
3265 {
3266     SDL_Event event;
3267     double incr, pos, frac;
3268
3269     for (;;) {
3270         double x;
3271         refresh_loop_wait_event(cur_stream, &event);
3272         switch (event.type) {
3273         case SDL_KEYDOWN:
3274             if (exit_on_keydown || event.key.keysym.sym == SDLK_ESCAPE || event.key.keysym.sym == SDLK_q) {
3275                 do_exit(cur_stream);
3276                 break;
3277             }
3278             // If we don't yet have a window, skip all key events, because read_thread might still be initializing...
3279             if (!cur_stream->width)
3280                 continue;
3281             switch (event.key.keysym.sym) {
3282             case SDLK_f:
3283                 toggle_full_screen(cur_stream);
3284                 cur_stream->force_refresh = 1;
3285                 break;
3286             case SDLK_p:
3287             case SDLK_SPACE:
3288                 toggle_pause(cur_stream);
3289                 break;
3290             case SDLK_m:
3291                 toggle_mute(cur_stream);
3292                 break;
3293             case SDLK_KP_MULTIPLY:
3294             case SDLK_0:
3295                 update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3296                 break;
3297             case SDLK_KP_DIVIDE:
3298             case SDLK_9:
3299                 update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3300                 break;
3301             case SDLK_s: // S: Step to next frame
3302                 step_to_next_frame(cur_stream);
3303                 break;
3304             case SDLK_a:
3305                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3306                 break;
3307             case SDLK_v:
3308                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3309                 break;
3310             case SDLK_c:
3311                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3312                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3313                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3314                 break;
3315             case SDLK_t:
3316                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3317                 break;
3318             case SDLK_w:
3319 #if CONFIG_AVFILTER
3320                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3321                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3322                         cur_stream->vfilter_idx = 0;
3323                 } else {
3324                     cur_stream->vfilter_idx = 0;
3325                     toggle_audio_display(cur_stream);
3326                 }
3327 #else
3328                 toggle_audio_display(cur_stream);
3329 #endif
3330                 break;
3331             case SDLK_PAGEUP:
3332                 if (cur_stream->ic->nb_chapters <= 1) {
3333                     incr = 600.0;
3334                     goto do_seek;
3335                 }
3336                 seek_chapter(cur_stream, 1);
3337                 break;
3338             case SDLK_PAGEDOWN:
3339                 if (cur_stream->ic->nb_chapters <= 1) {
3340                     incr = -600.0;
3341                     goto do_seek;
3342                 }
3343                 seek_chapter(cur_stream, -1);
3344                 break;
3345             case SDLK_LEFT:
3346                 incr = -10.0;
3347                 goto do_seek;
3348             case SDLK_RIGHT:
3349                 incr = 10.0;
3350                 goto do_seek;
3351             case SDLK_UP:
3352                 incr = 60.0;
3353                 goto do_seek;
3354             case SDLK_DOWN:
3355                 incr = -60.0;
3356             do_seek:
3357                     if (seek_by_bytes) {
3358                         pos = -1;
3359                         if (pos < 0 && cur_stream->video_stream >= 0)
3360                             pos = frame_queue_last_pos(&cur_stream->pictq);
3361                         if (pos < 0 && cur_stream->audio_stream >= 0)
3362                             pos = frame_queue_last_pos(&cur_stream->sampq);
3363                         if (pos < 0)
3364                             pos = avio_tell(cur_stream->ic->pb);
3365                         if (cur_stream->ic->bit_rate)
3366                             incr *= cur_stream->ic->bit_rate / 8.0;
3367                         else
3368                             incr *= 180000.0;
3369                         pos += incr;
3370                         stream_seek(cur_stream, pos, incr, 1);
3371                     } else {
3372                         pos = get_master_clock(cur_stream);
3373                         if (isnan(pos))
3374                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3375                         pos += incr;
3376                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3377                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3378                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3379                     }
3380                 break;
3381             default:
3382                 break;
3383             }
3384             break;
3385         case SDL_MOUSEBUTTONDOWN:
3386             if (exit_on_mousedown) {
3387                 do_exit(cur_stream);
3388                 break;
3389             }
3390             if (event.button.button == SDL_BUTTON_LEFT) {
3391                 static int64_t last_mouse_left_click = 0;
3392                 if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3393                     toggle_full_screen(cur_stream);
3394                     cur_stream->force_refresh = 1;
3395                     last_mouse_left_click = 0;
3396                 } else {
3397                     last_mouse_left_click = av_gettime_relative();
3398                 }
3399             }
3400         case SDL_MOUSEMOTION:
3401             if (cursor_hidden) {
3402                 SDL_ShowCursor(1);
3403                 cursor_hidden = 0;
3404             }
3405             cursor_last_shown = av_gettime_relative();
3406             if (event.type == SDL_MOUSEBUTTONDOWN) {
3407                 if (event.button.button != SDL_BUTTON_RIGHT)
3408                     break;
3409                 x = event.button.x;
3410             } else {
3411                 if (!(event.motion.state & SDL_BUTTON_RMASK))
3412                     break;
3413                 x = event.motion.x;
3414             }
3415                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3416                     uint64_t size =  avio_size(cur_stream->ic->pb);
3417                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3418                 } else {
3419                     int64_t ts;
3420                     int ns, hh, mm, ss;
3421                     int tns, thh, tmm, tss;
3422                     tns  = cur_stream->ic->duration / 1000000LL;
3423                     thh  = tns / 3600;
3424                     tmm  = (tns % 3600) / 60;
3425                     tss  = (tns % 60);
3426                     frac = x / cur_stream->width;
3427                     ns   = frac * tns;
3428                     hh   = ns / 3600;
3429                     mm   = (ns % 3600) / 60;
3430                     ss   = (ns % 60);
3431                     av_log(NULL, AV_LOG_INFO,
3432                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3433                             hh, mm, ss, thh, tmm, tss);
3434                     ts = frac * cur_stream->ic->duration;
3435                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3436                         ts += cur_stream->ic->start_time;
3437                     stream_seek(cur_stream, ts, 0, 0);
3438                 }
3439             break;
3440         case SDL_WINDOWEVENT:
3441             switch (event.window.event) {
3442                 case SDL_WINDOWEVENT_RESIZED:
3443                     screen_width  = cur_stream->width  = event.window.data1;
3444                     screen_height = cur_stream->height = event.window.data2;
3445                     if (cur_stream->vis_texture) {
3446                         SDL_DestroyTexture(cur_stream->vis_texture);
3447                         cur_stream->vis_texture = NULL;
3448                     }
3449                 case SDL_WINDOWEVENT_EXPOSED:
3450                     cur_stream->force_refresh = 1;
3451             }
3452             break;
3453         case SDL_QUIT:
3454         case FF_QUIT_EVENT:
3455             do_exit(cur_stream);
3456             break;
3457         default:
3458             break;
3459         }
3460     }
3461 }
3462
3463 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3464 {
3465     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3466     return opt_default(NULL, "video_size", arg);
3467 }
3468
3469 static int opt_width(void *optctx, const char *opt, const char *arg)
3470 {
3471     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3472     return 0;
3473 }
3474
3475 static int opt_height(void *optctx, const char *opt, const char *arg)
3476 {
3477     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3478     return 0;
3479 }
3480
3481 static int opt_format(void *optctx, const char *opt, const char *arg)
3482 {
3483     file_iformat = av_find_input_format(arg);
3484     if (!file_iformat) {
3485         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3486         return AVERROR(EINVAL);
3487     }
3488     return 0;
3489 }
3490
3491 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3492 {
3493     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3494     return opt_default(NULL, "pixel_format", arg);
3495 }
3496
3497 static int opt_sync(void *optctx, const char *opt, const char *arg)
3498 {
3499     if (!strcmp(arg, "audio"))
3500         av_sync_type = AV_SYNC_AUDIO_MASTER;
3501     else if (!strcmp(arg, "video"))
3502         av_sync_type = AV_SYNC_VIDEO_MASTER;
3503     else if (!strcmp(arg, "ext"))
3504         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3505     else {
3506         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3507         exit(1);
3508     }
3509     return 0;
3510 }
3511
3512 static int opt_seek(void *optctx, const char *opt, const char *arg)
3513 {
3514     start_time = parse_time_or_die(opt, arg, 1);
3515     return 0;
3516 }
3517
3518 static int opt_duration(void *optctx, const char *opt, const char *arg)
3519 {
3520     duration = parse_time_or_die(opt, arg, 1);
3521     return 0;
3522 }
3523
3524 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3525 {
3526     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3527                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3528                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3529                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3530     return 0;
3531 }
3532
3533 static void opt_input_file(void *optctx, const char *filename)
3534 {
3535     if (input_filename) {
3536         av_log(NULL, AV_LOG_FATAL,
3537                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3538                 filename, input_filename);
3539         exit(1);
3540     }
3541     if (!strcmp(filename, "-"))
3542         filename = "pipe:";
3543     input_filename = filename;
3544 }
3545
3546 static int opt_codec(void *optctx, const char *opt, const char *arg)
3547 {
3548    const char *spec = strchr(opt, ':');
3549    if (!spec) {
3550        av_log(NULL, AV_LOG_ERROR,
3551               "No media specifier was specified in '%s' in option '%s'\n",
3552                arg, opt);
3553        return AVERROR(EINVAL);
3554    }
3555    spec++;
3556    switch (spec[0]) {
3557    case 'a' :    audio_codec_name = arg; break;
3558    case 's' : subtitle_codec_name = arg; break;
3559    case 'v' :    video_codec_name = arg; break;
3560    default:
3561        av_log(NULL, AV_LOG_ERROR,
3562               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3563        return AVERROR(EINVAL);
3564    }
3565    return 0;
3566 }
3567
3568 static int dummy;
3569
3570 static const OptionDef options[] = {
3571     CMDUTILS_COMMON_OPTIONS
3572     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3573     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3574     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3575     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3576     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3577     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3578     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3579     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3580     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3581     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3582     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3583     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3584     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3585     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3586     { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
3587     { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
3588     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3589     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3590     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3591     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3592     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3593     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3594     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3595     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3596     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3597     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3598     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3599     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3600     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3601     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3602     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3603 #if CONFIG_AVFILTER
3604     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph&