Merge commit '0232ba62a28527579e34d44700b48017cc727e5f'
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/colorspace.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/avcodec.h"
52 # include "libavfilter/avfilter.h"
53 # include "libavfilter/buffersink.h"
54 # include "libavfilter/buffersrc.h"
55 #endif
56
57 #include <SDL.h>
58 #include <SDL_thread.h>
59
60 #include "cmdutils.h"
61
62 #include <assert.h>
63
64 const char program_name[] = "ffplay";
65 const int program_birth_year = 2003;
66
67 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
68 #define MIN_FRAMES 5
69
70 /* Minimum SDL audio buffer size, in samples. */
71 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
72 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
73 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
74
75 /* no AV sync correction is done if below the minimum AV sync threshold */
76 #define AV_SYNC_THRESHOLD_MIN 0.04
77 /* AV sync correction is done if above the maximum AV sync threshold */
78 #define AV_SYNC_THRESHOLD_MAX 0.1
79 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
80 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
81 /* no AV correction is done if too big error */
82 #define AV_NOSYNC_THRESHOLD 10.0
83
84 /* maximum audio speed change to get correct sync */
85 #define SAMPLE_CORRECTION_PERCENT_MAX 10
86
87 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
88 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
89 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
90 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
91
92 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
93 #define AUDIO_DIFF_AVG_NB   20
94
95 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
96 #define REFRESH_RATE 0.01
97
98 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
99 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
100 #define SAMPLE_ARRAY_SIZE (8 * 65536)
101
102 #define CURSOR_HIDE_DELAY 1000000
103
104 static int64_t sws_flags = SWS_BICUBIC;
105
106 typedef struct MyAVPacketList {
107     AVPacket pkt;
108     struct MyAVPacketList *next;
109     int serial;
110 } MyAVPacketList;
111
112 typedef struct PacketQueue {
113     MyAVPacketList *first_pkt, *last_pkt;
114     int nb_packets;
115     int size;
116     int abort_request;
117     int serial;
118     SDL_mutex *mutex;
119     SDL_cond *cond;
120 } PacketQueue;
121
122 #define VIDEO_PICTURE_QUEUE_SIZE 3
123 #define SUBPICTURE_QUEUE_SIZE 16
124 #define SAMPLE_QUEUE_SIZE 9
125 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
126
127 typedef struct AudioParams {
128     int freq;
129     int channels;
130     int64_t channel_layout;
131     enum AVSampleFormat fmt;
132     int frame_size;
133     int bytes_per_sec;
134 } AudioParams;
135
136 typedef struct Clock {
137     double pts;           /* clock base */
138     double pts_drift;     /* clock base minus time at which we updated the clock */
139     double last_updated;
140     double speed;
141     int serial;           /* clock is based on a packet with this serial */
142     int paused;
143     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
144 } Clock;
145
146 /* Common struct for handling all types of decoded data and allocated render buffers. */
147 typedef struct Frame {
148     AVFrame *frame;
149     AVSubtitle sub;
150     int serial;
151     double pts;           /* presentation timestamp for the frame */
152     double duration;      /* estimated duration of the frame */
153     int64_t pos;          /* byte position of the frame in the input file */
154     SDL_Overlay *bmp;
155     int allocated;
156     int reallocate;
157     int width;
158     int height;
159     AVRational sar;
160 } Frame;
161
162 typedef struct FrameQueue {
163     Frame queue[FRAME_QUEUE_SIZE];
164     int rindex;
165     int windex;
166     int size;
167     int max_size;
168     int keep_last;
169     int rindex_shown;
170     SDL_mutex *mutex;
171     SDL_cond *cond;
172     PacketQueue *pktq;
173 } FrameQueue;
174
175 enum {
176     AV_SYNC_AUDIO_MASTER, /* default choice */
177     AV_SYNC_VIDEO_MASTER,
178     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
179 };
180
181 typedef struct Decoder {
182     AVPacket pkt;
183     AVPacket pkt_temp;
184     PacketQueue *queue;
185     AVCodecContext *avctx;
186     int pkt_serial;
187     int finished;
188     int packet_pending;
189     SDL_cond *empty_queue_cond;
190     int64_t start_pts;
191     AVRational start_pts_tb;
192     int64_t next_pts;
193     AVRational next_pts_tb;
194     SDL_Thread *decoder_tid;
195 } Decoder;
196
197 typedef struct VideoState {
198     SDL_Thread *read_tid;
199     AVInputFormat *iformat;
200     int abort_request;
201     int force_refresh;
202     int paused;
203     int last_paused;
204     int queue_attachments_req;
205     int seek_req;
206     int seek_flags;
207     int64_t seek_pos;
208     int64_t seek_rel;
209     int read_pause_return;
210     AVFormatContext *ic;
211     int realtime;
212
213     Clock audclk;
214     Clock vidclk;
215     Clock extclk;
216
217     FrameQueue pictq;
218     FrameQueue subpq;
219     FrameQueue sampq;
220
221     Decoder auddec;
222     Decoder viddec;
223     Decoder subdec;
224
225     int audio_stream;
226
227     int av_sync_type;
228
229     double audio_clock;
230     int audio_clock_serial;
231     double audio_diff_cum; /* used for AV difference average computation */
232     double audio_diff_avg_coef;
233     double audio_diff_threshold;
234     int audio_diff_avg_count;
235     AVStream *audio_st;
236     PacketQueue audioq;
237     int audio_hw_buf_size;
238     uint8_t silence_buf[SDL_AUDIO_MIN_BUFFER_SIZE];
239     uint8_t *audio_buf;
240     uint8_t *audio_buf1;
241     unsigned int audio_buf_size; /* in bytes */
242     unsigned int audio_buf1_size;
243     int audio_buf_index; /* in bytes */
244     int audio_write_buf_size;
245     struct AudioParams audio_src;
246 #if CONFIG_AVFILTER
247     struct AudioParams audio_filter_src;
248 #endif
249     struct AudioParams audio_tgt;
250     struct SwrContext *swr_ctx;
251     int frame_drops_early;
252     int frame_drops_late;
253
254     enum ShowMode {
255         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
256     } show_mode;
257     int16_t sample_array[SAMPLE_ARRAY_SIZE];
258     int sample_array_index;
259     int last_i_start;
260     RDFTContext *rdft;
261     int rdft_bits;
262     FFTSample *rdft_data;
263     int xpos;
264     double last_vis_time;
265
266     int subtitle_stream;
267     AVStream *subtitle_st;
268     PacketQueue subtitleq;
269
270     double frame_timer;
271     double frame_last_returned_time;
272     double frame_last_filter_delay;
273     int video_stream;
274     AVStream *video_st;
275     PacketQueue videoq;
276     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
277 #if !CONFIG_AVFILTER
278     struct SwsContext *img_convert_ctx;
279 #endif
280     SDL_Rect last_display_rect;
281     int eof;
282
283     char filename[1024];
284     int width, height, xleft, ytop;
285     int step;
286
287 #if CONFIG_AVFILTER
288     int vfilter_idx;
289     AVFilterContext *in_video_filter;   // the first filter in the video chain
290     AVFilterContext *out_video_filter;  // the last filter in the video chain
291     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
292     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
293     AVFilterGraph *agraph;              // audio filter graph
294 #endif
295
296     int last_video_stream, last_audio_stream, last_subtitle_stream;
297
298     SDL_cond *continue_read_thread;
299 } VideoState;
300
301 /* options specified by the user */
302 static AVInputFormat *file_iformat;
303 static const char *input_filename;
304 static const char *window_title;
305 static int fs_screen_width;
306 static int fs_screen_height;
307 static int default_width  = 640;
308 static int default_height = 480;
309 static int screen_width  = 0;
310 static int screen_height = 0;
311 static int audio_disable;
312 static int video_disable;
313 static int subtitle_disable;
314 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
315 static int seek_by_bytes = -1;
316 static int display_disable;
317 static int show_status = 1;
318 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
319 static int64_t start_time = AV_NOPTS_VALUE;
320 static int64_t duration = AV_NOPTS_VALUE;
321 static int fast = 0;
322 static int genpts = 0;
323 static int lowres = 0;
324 static int decoder_reorder_pts = -1;
325 static int autoexit;
326 static int exit_on_keydown;
327 static int exit_on_mousedown;
328 static int loop = 1;
329 static int framedrop = -1;
330 static int infinite_buffer = -1;
331 static enum ShowMode show_mode = SHOW_MODE_NONE;
332 static const char *audio_codec_name;
333 static const char *subtitle_codec_name;
334 static const char *video_codec_name;
335 double rdftspeed = 0.02;
336 static int64_t cursor_last_shown;
337 static int cursor_hidden = 0;
338 #if CONFIG_AVFILTER
339 static const char **vfilters_list = NULL;
340 static int nb_vfilters = 0;
341 static char *afilters = NULL;
342 #endif
343 static int autorotate = 1;
344
345 /* current context */
346 static int is_full_screen;
347 static int64_t audio_callback_time;
348
349 static AVPacket flush_pkt;
350
351 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
352 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
353
354 static SDL_Surface *screen;
355
356 #if CONFIG_AVFILTER
357 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
358 {
359     GROW_ARRAY(vfilters_list, nb_vfilters);
360     vfilters_list[nb_vfilters - 1] = arg;
361     return 0;
362 }
363 #endif
364
365 static inline
366 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
367                    enum AVSampleFormat fmt2, int64_t channel_count2)
368 {
369     /* If channel count == 1, planar and non-planar formats are the same */
370     if (channel_count1 == 1 && channel_count2 == 1)
371         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
372     else
373         return channel_count1 != channel_count2 || fmt1 != fmt2;
374 }
375
376 static inline
377 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
378 {
379     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
380         return channel_layout;
381     else
382         return 0;
383 }
384
385 static void free_picture(Frame *vp);
386
387 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
388 {
389     MyAVPacketList *pkt1;
390
391     if (q->abort_request)
392        return -1;
393
394     pkt1 = av_malloc(sizeof(MyAVPacketList));
395     if (!pkt1)
396         return -1;
397     pkt1->pkt = *pkt;
398     pkt1->next = NULL;
399     if (pkt == &flush_pkt)
400         q->serial++;
401     pkt1->serial = q->serial;
402
403     if (!q->last_pkt)
404         q->first_pkt = pkt1;
405     else
406         q->last_pkt->next = pkt1;
407     q->last_pkt = pkt1;
408     q->nb_packets++;
409     q->size += pkt1->pkt.size + sizeof(*pkt1);
410     /* XXX: should duplicate packet data in DV case */
411     SDL_CondSignal(q->cond);
412     return 0;
413 }
414
415 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
416 {
417     int ret;
418
419     /* duplicate the packet */
420     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
421         return -1;
422
423     SDL_LockMutex(q->mutex);
424     ret = packet_queue_put_private(q, pkt);
425     SDL_UnlockMutex(q->mutex);
426
427     if (pkt != &flush_pkt && ret < 0)
428         av_free_packet(pkt);
429
430     return ret;
431 }
432
433 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
434 {
435     AVPacket pkt1, *pkt = &pkt1;
436     av_init_packet(pkt);
437     pkt->data = NULL;
438     pkt->size = 0;
439     pkt->stream_index = stream_index;
440     return packet_queue_put(q, pkt);
441 }
442
443 /* packet queue handling */
444 static void packet_queue_init(PacketQueue *q)
445 {
446     memset(q, 0, sizeof(PacketQueue));
447     q->mutex = SDL_CreateMutex();
448     q->cond = SDL_CreateCond();
449     q->abort_request = 1;
450 }
451
452 static void packet_queue_flush(PacketQueue *q)
453 {
454     MyAVPacketList *pkt, *pkt1;
455
456     SDL_LockMutex(q->mutex);
457     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
458         pkt1 = pkt->next;
459         av_free_packet(&pkt->pkt);
460         av_freep(&pkt);
461     }
462     q->last_pkt = NULL;
463     q->first_pkt = NULL;
464     q->nb_packets = 0;
465     q->size = 0;
466     SDL_UnlockMutex(q->mutex);
467 }
468
469 static void packet_queue_destroy(PacketQueue *q)
470 {
471     packet_queue_flush(q);
472     SDL_DestroyMutex(q->mutex);
473     SDL_DestroyCond(q->cond);
474 }
475
476 static void packet_queue_abort(PacketQueue *q)
477 {
478     SDL_LockMutex(q->mutex);
479
480     q->abort_request = 1;
481
482     SDL_CondSignal(q->cond);
483
484     SDL_UnlockMutex(q->mutex);
485 }
486
487 static void packet_queue_start(PacketQueue *q)
488 {
489     SDL_LockMutex(q->mutex);
490     q->abort_request = 0;
491     packet_queue_put_private(q, &flush_pkt);
492     SDL_UnlockMutex(q->mutex);
493 }
494
495 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
496 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
497 {
498     MyAVPacketList *pkt1;
499     int ret;
500
501     SDL_LockMutex(q->mutex);
502
503     for (;;) {
504         if (q->abort_request) {
505             ret = -1;
506             break;
507         }
508
509         pkt1 = q->first_pkt;
510         if (pkt1) {
511             q->first_pkt = pkt1->next;
512             if (!q->first_pkt)
513                 q->last_pkt = NULL;
514             q->nb_packets--;
515             q->size -= pkt1->pkt.size + sizeof(*pkt1);
516             *pkt = pkt1->pkt;
517             if (serial)
518                 *serial = pkt1->serial;
519             av_free(pkt1);
520             ret = 1;
521             break;
522         } else if (!block) {
523             ret = 0;
524             break;
525         } else {
526             SDL_CondWait(q->cond, q->mutex);
527         }
528     }
529     SDL_UnlockMutex(q->mutex);
530     return ret;
531 }
532
533 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
534     memset(d, 0, sizeof(Decoder));
535     d->avctx = avctx;
536     d->queue = queue;
537     d->empty_queue_cond = empty_queue_cond;
538     d->start_pts = AV_NOPTS_VALUE;
539 }
540
541 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
542     int got_frame = 0;
543
544     do {
545         int ret = -1;
546
547         if (d->queue->abort_request)
548             return -1;
549
550         if (!d->packet_pending || d->queue->serial != d->pkt_serial) {
551             AVPacket pkt;
552             do {
553                 if (d->queue->nb_packets == 0)
554                     SDL_CondSignal(d->empty_queue_cond);
555                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
556                     return -1;
557                 if (pkt.data == flush_pkt.data) {
558                     avcodec_flush_buffers(d->avctx);
559                     d->finished = 0;
560                     d->next_pts = d->start_pts;
561                     d->next_pts_tb = d->start_pts_tb;
562                 }
563             } while (pkt.data == flush_pkt.data || d->queue->serial != d->pkt_serial);
564             av_free_packet(&d->pkt);
565             d->pkt_temp = d->pkt = pkt;
566             d->packet_pending = 1;
567         }
568
569         switch (d->avctx->codec_type) {
570             case AVMEDIA_TYPE_VIDEO:
571                 ret = avcodec_decode_video2(d->avctx, frame, &got_frame, &d->pkt_temp);
572                 if (got_frame) {
573                     if (decoder_reorder_pts == -1) {
574                         frame->pts = av_frame_get_best_effort_timestamp(frame);
575                     } else if (decoder_reorder_pts) {
576                         frame->pts = frame->pkt_pts;
577                     } else {
578                         frame->pts = frame->pkt_dts;
579                     }
580                 }
581                 break;
582             case AVMEDIA_TYPE_AUDIO:
583                 ret = avcodec_decode_audio4(d->avctx, frame, &got_frame, &d->pkt_temp);
584                 if (got_frame) {
585                     AVRational tb = (AVRational){1, frame->sample_rate};
586                     if (frame->pts != AV_NOPTS_VALUE)
587                         frame->pts = av_rescale_q(frame->pts, d->avctx->time_base, tb);
588                     else if (frame->pkt_pts != AV_NOPTS_VALUE)
589                         frame->pts = av_rescale_q(frame->pkt_pts, av_codec_get_pkt_timebase(d->avctx), tb);
590                     else if (d->next_pts != AV_NOPTS_VALUE)
591                         frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
592                     if (frame->pts != AV_NOPTS_VALUE) {
593                         d->next_pts = frame->pts + frame->nb_samples;
594                         d->next_pts_tb = tb;
595                     }
596                 }
597                 break;
598             case AVMEDIA_TYPE_SUBTITLE:
599                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &d->pkt_temp);
600                 break;
601         }
602
603         if (ret < 0) {
604             d->packet_pending = 0;
605         } else {
606             d->pkt_temp.dts =
607             d->pkt_temp.pts = AV_NOPTS_VALUE;
608             if (d->pkt_temp.data) {
609                 if (d->avctx->codec_type != AVMEDIA_TYPE_AUDIO)
610                     ret = d->pkt_temp.size;
611                 d->pkt_temp.data += ret;
612                 d->pkt_temp.size -= ret;
613                 if (d->pkt_temp.size <= 0)
614                     d->packet_pending = 0;
615             } else {
616                 if (!got_frame) {
617                     d->packet_pending = 0;
618                     d->finished = d->pkt_serial;
619                 }
620             }
621         }
622     } while (!got_frame && !d->finished);
623
624     return got_frame;
625 }
626
627 static void decoder_destroy(Decoder *d) {
628     av_free_packet(&d->pkt);
629 }
630
631 static void frame_queue_unref_item(Frame *vp)
632 {
633     av_frame_unref(vp->frame);
634     avsubtitle_free(&vp->sub);
635 }
636
637 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
638 {
639     int i;
640     memset(f, 0, sizeof(FrameQueue));
641     if (!(f->mutex = SDL_CreateMutex()))
642         return AVERROR(ENOMEM);
643     if (!(f->cond = SDL_CreateCond()))
644         return AVERROR(ENOMEM);
645     f->pktq = pktq;
646     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
647     f->keep_last = !!keep_last;
648     for (i = 0; i < f->max_size; i++)
649         if (!(f->queue[i].frame = av_frame_alloc()))
650             return AVERROR(ENOMEM);
651     return 0;
652 }
653
654 static void frame_queue_destory(FrameQueue *f)
655 {
656     int i;
657     for (i = 0; i < f->max_size; i++) {
658         Frame *vp = &f->queue[i];
659         frame_queue_unref_item(vp);
660         av_frame_free(&vp->frame);
661         free_picture(vp);
662     }
663     SDL_DestroyMutex(f->mutex);
664     SDL_DestroyCond(f->cond);
665 }
666
667 static void frame_queue_signal(FrameQueue *f)
668 {
669     SDL_LockMutex(f->mutex);
670     SDL_CondSignal(f->cond);
671     SDL_UnlockMutex(f->mutex);
672 }
673
674 static Frame *frame_queue_peek(FrameQueue *f)
675 {
676     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
677 }
678
679 static Frame *frame_queue_peek_next(FrameQueue *f)
680 {
681     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
682 }
683
684 static Frame *frame_queue_peek_last(FrameQueue *f)
685 {
686     return &f->queue[f->rindex];
687 }
688
689 static Frame *frame_queue_peek_writable(FrameQueue *f)
690 {
691     /* wait until we have space to put a new frame */
692     SDL_LockMutex(f->mutex);
693     while (f->size >= f->max_size &&
694            !f->pktq->abort_request) {
695         SDL_CondWait(f->cond, f->mutex);
696     }
697     SDL_UnlockMutex(f->mutex);
698
699     if (f->pktq->abort_request)
700         return NULL;
701
702     return &f->queue[f->windex];
703 }
704
705 static Frame *frame_queue_peek_readable(FrameQueue *f)
706 {
707     /* wait until we have a readable a new frame */
708     SDL_LockMutex(f->mutex);
709     while (f->size - f->rindex_shown <= 0 &&
710            !f->pktq->abort_request) {
711         SDL_CondWait(f->cond, f->mutex);
712     }
713     SDL_UnlockMutex(f->mutex);
714
715     if (f->pktq->abort_request)
716         return NULL;
717
718     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
719 }
720
721 static void frame_queue_push(FrameQueue *f)
722 {
723     if (++f->windex == f->max_size)
724         f->windex = 0;
725     SDL_LockMutex(f->mutex);
726     f->size++;
727     SDL_CondSignal(f->cond);
728     SDL_UnlockMutex(f->mutex);
729 }
730
731 static void frame_queue_next(FrameQueue *f)
732 {
733     if (f->keep_last && !f->rindex_shown) {
734         f->rindex_shown = 1;
735         return;
736     }
737     frame_queue_unref_item(&f->queue[f->rindex]);
738     if (++f->rindex == f->max_size)
739         f->rindex = 0;
740     SDL_LockMutex(f->mutex);
741     f->size--;
742     SDL_CondSignal(f->cond);
743     SDL_UnlockMutex(f->mutex);
744 }
745
746 /* jump back to the previous frame if available by resetting rindex_shown */
747 static int frame_queue_prev(FrameQueue *f)
748 {
749     int ret = f->rindex_shown;
750     f->rindex_shown = 0;
751     return ret;
752 }
753
754 /* return the number of undisplayed frames in the queue */
755 static int frame_queue_nb_remaining(FrameQueue *f)
756 {
757     return f->size - f->rindex_shown;
758 }
759
760 /* return last shown position */
761 static int64_t frame_queue_last_pos(FrameQueue *f)
762 {
763     Frame *fp = &f->queue[f->rindex];
764     if (f->rindex_shown && fp->serial == f->pktq->serial)
765         return fp->pos;
766     else
767         return -1;
768 }
769
770 static void decoder_abort(Decoder *d, FrameQueue *fq)
771 {
772     packet_queue_abort(d->queue);
773     frame_queue_signal(fq);
774     SDL_WaitThread(d->decoder_tid, NULL);
775     d->decoder_tid = NULL;
776     packet_queue_flush(d->queue);
777 }
778
779 static inline void fill_rectangle(SDL_Surface *screen,
780                                   int x, int y, int w, int h, int color, int update)
781 {
782     SDL_Rect rect;
783     rect.x = x;
784     rect.y = y;
785     rect.w = w;
786     rect.h = h;
787     SDL_FillRect(screen, &rect, color);
788     if (update && w > 0 && h > 0)
789         SDL_UpdateRect(screen, x, y, w, h);
790 }
791
792 /* draw only the border of a rectangle */
793 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
794 {
795     int w1, w2, h1, h2;
796
797     /* fill the background */
798     w1 = x;
799     if (w1 < 0)
800         w1 = 0;
801     w2 = width - (x + w);
802     if (w2 < 0)
803         w2 = 0;
804     h1 = y;
805     if (h1 < 0)
806         h1 = 0;
807     h2 = height - (y + h);
808     if (h2 < 0)
809         h2 = 0;
810     fill_rectangle(screen,
811                    xleft, ytop,
812                    w1, height,
813                    color, update);
814     fill_rectangle(screen,
815                    xleft + width - w2, ytop,
816                    w2, height,
817                    color, update);
818     fill_rectangle(screen,
819                    xleft + w1, ytop,
820                    width - w1 - w2, h1,
821                    color, update);
822     fill_rectangle(screen,
823                    xleft + w1, ytop + height - h2,
824                    width - w1 - w2, h2,
825                    color, update);
826 }
827
828 #define ALPHA_BLEND(a, oldp, newp, s)\
829 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
830
831 #define RGBA_IN(r, g, b, a, s)\
832 {\
833     unsigned int v = ((const uint32_t *)(s))[0];\
834     a = (v >> 24) & 0xff;\
835     r = (v >> 16) & 0xff;\
836     g = (v >> 8) & 0xff;\
837     b = v & 0xff;\
838 }
839
840 #define YUVA_IN(y, u, v, a, s, pal)\
841 {\
842     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
843     a = (val >> 24) & 0xff;\
844     y = (val >> 16) & 0xff;\
845     u = (val >> 8) & 0xff;\
846     v = val & 0xff;\
847 }
848
849 #define YUVA_OUT(d, y, u, v, a)\
850 {\
851     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
852 }
853
854
855 #define BPP 1
856
857 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
858 {
859     int wrap, wrap3, width2, skip2;
860     int y, u, v, a, u1, v1, a1, w, h;
861     uint8_t *lum, *cb, *cr;
862     const uint8_t *p;
863     const uint32_t *pal;
864     int dstx, dsty, dstw, dsth;
865
866     dstw = av_clip(rect->w, 0, imgw);
867     dsth = av_clip(rect->h, 0, imgh);
868     dstx = av_clip(rect->x, 0, imgw - dstw);
869     dsty = av_clip(rect->y, 0, imgh - dsth);
870     lum = dst->data[0] + dsty * dst->linesize[0];
871     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
872     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
873
874     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
875     skip2 = dstx >> 1;
876     wrap = dst->linesize[0];
877     wrap3 = rect->pict.linesize[0];
878     p = rect->pict.data[0];
879     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
880
881     if (dsty & 1) {
882         lum += dstx;
883         cb += skip2;
884         cr += skip2;
885
886         if (dstx & 1) {
887             YUVA_IN(y, u, v, a, p, pal);
888             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
889             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
890             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
891             cb++;
892             cr++;
893             lum++;
894             p += BPP;
895         }
896         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
897             YUVA_IN(y, u, v, a, p, pal);
898             u1 = u;
899             v1 = v;
900             a1 = a;
901             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
902
903             YUVA_IN(y, u, v, a, p + BPP, pal);
904             u1 += u;
905             v1 += v;
906             a1 += a;
907             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
908             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
909             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
910             cb++;
911             cr++;
912             p += 2 * BPP;
913             lum += 2;
914         }
915         if (w) {
916             YUVA_IN(y, u, v, a, p, pal);
917             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
918             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
919             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
920             p++;
921             lum++;
922         }
923         p += wrap3 - dstw * BPP;
924         lum += wrap - dstw - dstx;
925         cb += dst->linesize[1] - width2 - skip2;
926         cr += dst->linesize[2] - width2 - skip2;
927     }
928     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
929         lum += dstx;
930         cb += skip2;
931         cr += skip2;
932
933         if (dstx & 1) {
934             YUVA_IN(y, u, v, a, p, pal);
935             u1 = u;
936             v1 = v;
937             a1 = a;
938             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
939             p += wrap3;
940             lum += wrap;
941             YUVA_IN(y, u, v, a, p, pal);
942             u1 += u;
943             v1 += v;
944             a1 += a;
945             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
946             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
947             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
948             cb++;
949             cr++;
950             p += -wrap3 + BPP;
951             lum += -wrap + 1;
952         }
953         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
954             YUVA_IN(y, u, v, a, p, pal);
955             u1 = u;
956             v1 = v;
957             a1 = a;
958             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
959
960             YUVA_IN(y, u, v, a, p + BPP, pal);
961             u1 += u;
962             v1 += v;
963             a1 += a;
964             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
965             p += wrap3;
966             lum += wrap;
967
968             YUVA_IN(y, u, v, a, p, pal);
969             u1 += u;
970             v1 += v;
971             a1 += a;
972             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
973
974             YUVA_IN(y, u, v, a, p + BPP, pal);
975             u1 += u;
976             v1 += v;
977             a1 += a;
978             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
979
980             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
981             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
982
983             cb++;
984             cr++;
985             p += -wrap3 + 2 * BPP;
986             lum += -wrap + 2;
987         }
988         if (w) {
989             YUVA_IN(y, u, v, a, p, pal);
990             u1 = u;
991             v1 = v;
992             a1 = a;
993             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
994             p += wrap3;
995             lum += wrap;
996             YUVA_IN(y, u, v, a, p, pal);
997             u1 += u;
998             v1 += v;
999             a1 += a;
1000             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1001             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
1002             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
1003             cb++;
1004             cr++;
1005             p += -wrap3 + BPP;
1006             lum += -wrap + 1;
1007         }
1008         p += wrap3 + (wrap3 - dstw * BPP);
1009         lum += wrap + (wrap - dstw - dstx);
1010         cb += dst->linesize[1] - width2 - skip2;
1011         cr += dst->linesize[2] - width2 - skip2;
1012     }
1013     /* handle odd height */
1014     if (h) {
1015         lum += dstx;
1016         cb += skip2;
1017         cr += skip2;
1018
1019         if (dstx & 1) {
1020             YUVA_IN(y, u, v, a, p, pal);
1021             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1022             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1023             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1024             cb++;
1025             cr++;
1026             lum++;
1027             p += BPP;
1028         }
1029         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
1030             YUVA_IN(y, u, v, a, p, pal);
1031             u1 = u;
1032             v1 = v;
1033             a1 = a;
1034             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1035
1036             YUVA_IN(y, u, v, a, p + BPP, pal);
1037             u1 += u;
1038             v1 += v;
1039             a1 += a;
1040             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
1041             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
1042             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
1043             cb++;
1044             cr++;
1045             p += 2 * BPP;
1046             lum += 2;
1047         }
1048         if (w) {
1049             YUVA_IN(y, u, v, a, p, pal);
1050             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1051             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1052             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1053         }
1054     }
1055 }
1056
1057 static void free_picture(Frame *vp)
1058 {
1059      if (vp->bmp) {
1060          SDL_FreeYUVOverlay(vp->bmp);
1061          vp->bmp = NULL;
1062      }
1063 }
1064
1065 static void calculate_display_rect(SDL_Rect *rect,
1066                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
1067                                    int pic_width, int pic_height, AVRational pic_sar)
1068 {
1069     float aspect_ratio;
1070     int width, height, x, y;
1071
1072     if (pic_sar.num == 0)
1073         aspect_ratio = 0;
1074     else
1075         aspect_ratio = av_q2d(pic_sar);
1076
1077     if (aspect_ratio <= 0.0)
1078         aspect_ratio = 1.0;
1079     aspect_ratio *= (float)pic_width / (float)pic_height;
1080
1081     /* XXX: we suppose the screen has a 1.0 pixel ratio */
1082     height = scr_height;
1083     width = ((int)rint(height * aspect_ratio)) & ~1;
1084     if (width > scr_width) {
1085         width = scr_width;
1086         height = ((int)rint(width / aspect_ratio)) & ~1;
1087     }
1088     x = (scr_width - width) / 2;
1089     y = (scr_height - height) / 2;
1090     rect->x = scr_xleft + x;
1091     rect->y = scr_ytop  + y;
1092     rect->w = FFMAX(width,  1);
1093     rect->h = FFMAX(height, 1);
1094 }
1095
1096 static void video_image_display(VideoState *is)
1097 {
1098     Frame *vp;
1099     Frame *sp;
1100     AVPicture pict;
1101     SDL_Rect rect;
1102     int i;
1103
1104     vp = frame_queue_peek(&is->pictq);
1105     if (vp->bmp) {
1106         if (is->subtitle_st) {
1107             if (frame_queue_nb_remaining(&is->subpq) > 0) {
1108                 sp = frame_queue_peek(&is->subpq);
1109
1110                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
1111                     SDL_LockYUVOverlay (vp->bmp);
1112
1113                     pict.data[0] = vp->bmp->pixels[0];
1114                     pict.data[1] = vp->bmp->pixels[2];
1115                     pict.data[2] = vp->bmp->pixels[1];
1116
1117                     pict.linesize[0] = vp->bmp->pitches[0];
1118                     pict.linesize[1] = vp->bmp->pitches[2];
1119                     pict.linesize[2] = vp->bmp->pitches[1];
1120
1121                     for (i = 0; i < sp->sub.num_rects; i++)
1122                         blend_subrect(&pict, sp->sub.rects[i],
1123                                       vp->bmp->w, vp->bmp->h);
1124
1125                     SDL_UnlockYUVOverlay (vp->bmp);
1126                 }
1127             }
1128         }
1129
1130         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1131
1132         SDL_DisplayYUVOverlay(vp->bmp, &rect);
1133
1134         if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
1135             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1136             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
1137             is->last_display_rect = rect;
1138         }
1139     }
1140 }
1141
1142 static inline int compute_mod(int a, int b)
1143 {
1144     return a < 0 ? a%b + b : a%b;
1145 }
1146
1147 static void video_audio_display(VideoState *s)
1148 {
1149     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1150     int ch, channels, h, h2, bgcolor, fgcolor;
1151     int64_t time_diff;
1152     int rdft_bits, nb_freq;
1153
1154     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1155         ;
1156     nb_freq = 1 << (rdft_bits - 1);
1157
1158     /* compute display index : center on currently output samples */
1159     channels = s->audio_tgt.channels;
1160     nb_display_channels = channels;
1161     if (!s->paused) {
1162         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1163         n = 2 * channels;
1164         delay = s->audio_write_buf_size;
1165         delay /= n;
1166
1167         /* to be more precise, we take into account the time spent since
1168            the last buffer computation */
1169         if (audio_callback_time) {
1170             time_diff = av_gettime_relative() - audio_callback_time;
1171             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1172         }
1173
1174         delay += 2 * data_used;
1175         if (delay < data_used)
1176             delay = data_used;
1177
1178         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1179         if (s->show_mode == SHOW_MODE_WAVES) {
1180             h = INT_MIN;
1181             for (i = 0; i < 1000; i += channels) {
1182                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1183                 int a = s->sample_array[idx];
1184                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1185                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1186                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1187                 int score = a - d;
1188                 if (h < score && (b ^ c) < 0) {
1189                     h = score;
1190                     i_start = idx;
1191                 }
1192             }
1193         }
1194
1195         s->last_i_start = i_start;
1196     } else {
1197         i_start = s->last_i_start;
1198     }
1199
1200     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1201     if (s->show_mode == SHOW_MODE_WAVES) {
1202         fill_rectangle(screen,
1203                        s->xleft, s->ytop, s->width, s->height,
1204                        bgcolor, 0);
1205
1206         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
1207
1208         /* total height for one channel */
1209         h = s->height / nb_display_channels;
1210         /* graph height / 2 */
1211         h2 = (h * 9) / 20;
1212         for (ch = 0; ch < nb_display_channels; ch++) {
1213             i = i_start + ch;
1214             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1215             for (x = 0; x < s->width; x++) {
1216                 y = (s->sample_array[i] * h2) >> 15;
1217                 if (y < 0) {
1218                     y = -y;
1219                     ys = y1 - y;
1220                 } else {
1221                     ys = y1;
1222                 }
1223                 fill_rectangle(screen,
1224                                s->xleft + x, ys, 1, y,
1225                                fgcolor, 0);
1226                 i += channels;
1227                 if (i >= SAMPLE_ARRAY_SIZE)
1228                     i -= SAMPLE_ARRAY_SIZE;
1229             }
1230         }
1231
1232         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
1233
1234         for (ch = 1; ch < nb_display_channels; ch++) {
1235             y = s->ytop + ch * h;
1236             fill_rectangle(screen,
1237                            s->xleft, y, s->width, 1,
1238                            fgcolor, 0);
1239         }
1240         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
1241     } else {
1242         nb_display_channels= FFMIN(nb_display_channels, 2);
1243         if (rdft_bits != s->rdft_bits) {
1244             av_rdft_end(s->rdft);
1245             av_free(s->rdft_data);
1246             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1247             s->rdft_bits = rdft_bits;
1248             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1249         }
1250         {
1251             FFTSample *data[2];
1252             for (ch = 0; ch < nb_display_channels; ch++) {
1253                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1254                 i = i_start + ch;
1255                 for (x = 0; x < 2 * nb_freq; x++) {
1256                     double w = (x-nb_freq) * (1.0 / nb_freq);
1257                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1258                     i += channels;
1259                     if (i >= SAMPLE_ARRAY_SIZE)
1260                         i -= SAMPLE_ARRAY_SIZE;
1261                 }
1262                 av_rdft_calc(s->rdft, data[ch]);
1263             }
1264             /* Least efficient way to do this, we should of course
1265              * directly access it but it is more than fast enough. */
1266             for (y = 0; y < s->height; y++) {
1267                 double w = 1 / sqrt(nb_freq);
1268                 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]));
1269                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1270                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1271                 a = FFMIN(a, 255);
1272                 b = FFMIN(b, 255);
1273                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1274
1275                 fill_rectangle(screen,
1276                             s->xpos, s->height-y, 1, 1,
1277                             fgcolor, 0);
1278             }
1279         }
1280         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1281         if (!s->paused)
1282             s->xpos++;
1283         if (s->xpos >= s->width)
1284             s->xpos= s->xleft;
1285     }
1286 }
1287
1288 static void stream_close(VideoState *is)
1289 {
1290     /* XXX: use a special url_shutdown call to abort parse cleanly */
1291     is->abort_request = 1;
1292     SDL_WaitThread(is->read_tid, NULL);
1293     packet_queue_destroy(&is->videoq);
1294     packet_queue_destroy(&is->audioq);
1295     packet_queue_destroy(&is->subtitleq);
1296
1297     /* free all pictures */
1298     frame_queue_destory(&is->pictq);
1299     frame_queue_destory(&is->sampq);
1300     frame_queue_destory(&is->subpq);
1301     SDL_DestroyCond(is->continue_read_thread);
1302 #if !CONFIG_AVFILTER
1303     sws_freeContext(is->img_convert_ctx);
1304 #endif
1305     av_free(is);
1306 }
1307
1308 static void do_exit(VideoState *is)
1309 {
1310     if (is) {
1311         stream_close(is);
1312     }
1313     av_lockmgr_register(NULL);
1314     uninit_opts();
1315 #if CONFIG_AVFILTER
1316     av_freep(&vfilters_list);
1317 #endif
1318     avformat_network_deinit();
1319     if (show_status)
1320         printf("\n");
1321     SDL_Quit();
1322     av_log(NULL, AV_LOG_QUIET, "%s", "");
1323     exit(0);
1324 }
1325
1326 static void sigterm_handler(int sig)
1327 {
1328     exit(123);
1329 }
1330
1331 static void set_default_window_size(int width, int height, AVRational sar)
1332 {
1333     SDL_Rect rect;
1334     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1335     default_width  = rect.w;
1336     default_height = rect.h;
1337 }
1338
1339 static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
1340 {
1341     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1342     int w,h;
1343
1344     if (is_full_screen) flags |= SDL_FULLSCREEN;
1345     else                flags |= SDL_RESIZABLE;
1346
1347     if (vp && vp->width)
1348         set_default_window_size(vp->width, vp->height, vp->sar);
1349
1350     if (is_full_screen && fs_screen_width) {
1351         w = fs_screen_width;
1352         h = fs_screen_height;
1353     } else if (!is_full_screen && screen_width) {
1354         w = screen_width;
1355         h = screen_height;
1356     } else {
1357         w = default_width;
1358         h = default_height;
1359     }
1360     w = FFMIN(16383, w);
1361     if (screen && is->width == screen->w && screen->w == w
1362        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1363         return 0;
1364     screen = SDL_SetVideoMode(w, h, 0, flags);
1365     if (!screen) {
1366         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1367         do_exit(is);
1368     }
1369     if (!window_title)
1370         window_title = input_filename;
1371     SDL_WM_SetCaption(window_title, window_title);
1372
1373     is->width  = screen->w;
1374     is->height = screen->h;
1375
1376     return 0;
1377 }
1378
1379 /* display the current picture, if any */
1380 static void video_display(VideoState *is)
1381 {
1382     if (!screen)
1383         video_open(is, 0, NULL);
1384     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1385         video_audio_display(is);
1386     else if (is->video_st)
1387         video_image_display(is);
1388 }
1389
1390 static double get_clock(Clock *c)
1391 {
1392     if (*c->queue_serial != c->serial)
1393         return NAN;
1394     if (c->paused) {
1395         return c->pts;
1396     } else {
1397         double time = av_gettime_relative() / 1000000.0;
1398         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1399     }
1400 }
1401
1402 static void set_clock_at(Clock *c, double pts, int serial, double time)
1403 {
1404     c->pts = pts;
1405     c->last_updated = time;
1406     c->pts_drift = c->pts - time;
1407     c->serial = serial;
1408 }
1409
1410 static void set_clock(Clock *c, double pts, int serial)
1411 {
1412     double time = av_gettime_relative() / 1000000.0;
1413     set_clock_at(c, pts, serial, time);
1414 }
1415
1416 static void set_clock_speed(Clock *c, double speed)
1417 {
1418     set_clock(c, get_clock(c), c->serial);
1419     c->speed = speed;
1420 }
1421
1422 static void init_clock(Clock *c, int *queue_serial)
1423 {
1424     c->speed = 1.0;
1425     c->paused = 0;
1426     c->queue_serial = queue_serial;
1427     set_clock(c, NAN, -1);
1428 }
1429
1430 static void sync_clock_to_slave(Clock *c, Clock *slave)
1431 {
1432     double clock = get_clock(c);
1433     double slave_clock = get_clock(slave);
1434     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1435         set_clock(c, slave_clock, slave->serial);
1436 }
1437
1438 static int get_master_sync_type(VideoState *is) {
1439     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1440         if (is->video_st)
1441             return AV_SYNC_VIDEO_MASTER;
1442         else
1443             return AV_SYNC_AUDIO_MASTER;
1444     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1445         if (is->audio_st)
1446             return AV_SYNC_AUDIO_MASTER;
1447         else
1448             return AV_SYNC_EXTERNAL_CLOCK;
1449     } else {
1450         return AV_SYNC_EXTERNAL_CLOCK;
1451     }
1452 }
1453
1454 /* get the current master clock value */
1455 static double get_master_clock(VideoState *is)
1456 {
1457     double val;
1458
1459     switch (get_master_sync_type(is)) {
1460         case AV_SYNC_VIDEO_MASTER:
1461             val = get_clock(&is->vidclk);
1462             break;
1463         case AV_SYNC_AUDIO_MASTER:
1464             val = get_clock(&is->audclk);
1465             break;
1466         default:
1467             val = get_clock(&is->extclk);
1468             break;
1469     }
1470     return val;
1471 }
1472
1473 static void check_external_clock_speed(VideoState *is) {
1474    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1475        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1476        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1477    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1478               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1479        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1480    } else {
1481        double speed = is->extclk.speed;
1482        if (speed != 1.0)
1483            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1484    }
1485 }
1486
1487 /* seek in the stream */
1488 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1489 {
1490     if (!is->seek_req) {
1491         is->seek_pos = pos;
1492         is->seek_rel = rel;
1493         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1494         if (seek_by_bytes)
1495             is->seek_flags |= AVSEEK_FLAG_BYTE;
1496         is->seek_req = 1;
1497         SDL_CondSignal(is->continue_read_thread);
1498     }
1499 }
1500
1501 /* pause or resume the video */
1502 static void stream_toggle_pause(VideoState *is)
1503 {
1504     if (is->paused) {
1505         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1506         if (is->read_pause_return != AVERROR(ENOSYS)) {
1507             is->vidclk.paused = 0;
1508         }
1509         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1510     }
1511     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1512     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1513 }
1514
1515 static void toggle_pause(VideoState *is)
1516 {
1517     stream_toggle_pause(is);
1518     is->step = 0;
1519 }
1520
1521 static void step_to_next_frame(VideoState *is)
1522 {
1523     /* if the stream is paused unpause it, then step */
1524     if (is->paused)
1525         stream_toggle_pause(is);
1526     is->step = 1;
1527 }
1528
1529 static double compute_target_delay(double delay, VideoState *is)
1530 {
1531     double sync_threshold, diff;
1532
1533     /* update delay to follow master synchronisation source */
1534     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1535         /* if video is slave, we try to correct big delays by
1536            duplicating or deleting a frame */
1537         diff = get_clock(&is->vidclk) - get_master_clock(is);
1538
1539         /* skip or repeat frame. We take into account the
1540            delay to compute the threshold. I still don't know
1541            if it is the best guess */
1542         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1543         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1544             if (diff <= -sync_threshold)
1545                 delay = FFMAX(0, delay + diff);
1546             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1547                 delay = delay + diff;
1548             else if (diff >= sync_threshold)
1549                 delay = 2 * delay;
1550         }
1551     }
1552
1553     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1554             delay, -diff);
1555
1556     return delay;
1557 }
1558
1559 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1560     if (vp->serial == nextvp->serial) {
1561         double duration = nextvp->pts - vp->pts;
1562         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1563             return vp->duration;
1564         else
1565             return duration;
1566     } else {
1567         return 0.0;
1568     }
1569 }
1570
1571 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1572     /* update current video pts */
1573     set_clock(&is->vidclk, pts, serial);
1574     sync_clock_to_slave(&is->extclk, &is->vidclk);
1575 }
1576
1577 /* called to display each frame */
1578 static void video_refresh(void *opaque, double *remaining_time)
1579 {
1580     VideoState *is = opaque;
1581     double time;
1582
1583     Frame *sp, *sp2;
1584
1585     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1586         check_external_clock_speed(is);
1587
1588     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1589         time = av_gettime_relative() / 1000000.0;
1590         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1591             video_display(is);
1592             is->last_vis_time = time;
1593         }
1594         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1595     }
1596
1597     if (is->video_st) {
1598         int redisplay = 0;
1599         if (is->force_refresh)
1600             redisplay = frame_queue_prev(&is->pictq);
1601 retry:
1602         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1603             // nothing to do, no picture to display in the queue
1604         } else {
1605             double last_duration, duration, delay;
1606             Frame *vp, *lastvp;
1607
1608             /* dequeue the picture */
1609             lastvp = frame_queue_peek_last(&is->pictq);
1610             vp = frame_queue_peek(&is->pictq);
1611
1612             if (vp->serial != is->videoq.serial) {
1613                 frame_queue_next(&is->pictq);
1614                 redisplay = 0;
1615                 goto retry;
1616             }
1617
1618             if (lastvp->serial != vp->serial && !redisplay)
1619                 is->frame_timer = av_gettime_relative() / 1000000.0;
1620
1621             if (is->paused)
1622                 goto display;
1623
1624             /* compute nominal last_duration */
1625             last_duration = vp_duration(is, lastvp, vp);
1626             if (redisplay)
1627                 delay = 0.0;
1628             else
1629                 delay = compute_target_delay(last_duration, is);
1630
1631             time= av_gettime_relative()/1000000.0;
1632             if (time < is->frame_timer + delay && !redisplay) {
1633                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1634                 return;
1635             }
1636
1637             is->frame_timer += delay;
1638             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1639                 is->frame_timer = time;
1640
1641             SDL_LockMutex(is->pictq.mutex);
1642             if (!redisplay && !isnan(vp->pts))
1643                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1644             SDL_UnlockMutex(is->pictq.mutex);
1645
1646             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1647                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1648                 duration = vp_duration(is, vp, nextvp);
1649                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1650                     if (!redisplay)
1651                         is->frame_drops_late++;
1652                     frame_queue_next(&is->pictq);
1653                     redisplay = 0;
1654                     goto retry;
1655                 }
1656             }
1657
1658             if (is->subtitle_st) {
1659                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1660                         sp = frame_queue_peek(&is->subpq);
1661
1662                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1663                             sp2 = frame_queue_peek_next(&is->subpq);
1664                         else
1665                             sp2 = NULL;
1666
1667                         if (sp->serial != is->subtitleq.serial
1668                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1669                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1670                         {
1671                             frame_queue_next(&is->subpq);
1672                         } else {
1673                             break;
1674                         }
1675                     }
1676             }
1677
1678 display:
1679             /* display picture */
1680             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1681                 video_display(is);
1682
1683             frame_queue_next(&is->pictq);
1684
1685             if (is->step && !is->paused)
1686                 stream_toggle_pause(is);
1687         }
1688     }
1689     is->force_refresh = 0;
1690     if (show_status) {
1691         static int64_t last_time;
1692         int64_t cur_time;
1693         int aqsize, vqsize, sqsize;
1694         double av_diff;
1695
1696         cur_time = av_gettime_relative();
1697         if (!last_time || (cur_time - last_time) >= 30000) {
1698             aqsize = 0;
1699             vqsize = 0;
1700             sqsize = 0;
1701             if (is->audio_st)
1702                 aqsize = is->audioq.size;
1703             if (is->video_st)
1704                 vqsize = is->videoq.size;
1705             if (is->subtitle_st)
1706                 sqsize = is->subtitleq.size;
1707             av_diff = 0;
1708             if (is->audio_st && is->video_st)
1709                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1710             else if (is->video_st)
1711                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1712             else if (is->audio_st)
1713                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1714             av_log(NULL, AV_LOG_INFO,
1715                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1716                    get_master_clock(is),
1717                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1718                    av_diff,
1719                    is->frame_drops_early + is->frame_drops_late,
1720                    aqsize / 1024,
1721                    vqsize / 1024,
1722                    sqsize,
1723                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1724                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1725             fflush(stdout);
1726             last_time = cur_time;
1727         }
1728     }
1729 }
1730
1731 /* allocate a picture (needs to do that in main thread to avoid
1732    potential locking problems */
1733 static void alloc_picture(VideoState *is)
1734 {
1735     Frame *vp;
1736     int64_t bufferdiff;
1737
1738     vp = &is->pictq.queue[is->pictq.windex];
1739
1740     free_picture(vp);
1741
1742     video_open(is, 0, vp);
1743
1744     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1745                                    SDL_YV12_OVERLAY,
1746                                    screen);
1747     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1748     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1749         /* SDL allocates a buffer smaller than requested if the video
1750          * overlay hardware is unable to support the requested size. */
1751         av_log(NULL, AV_LOG_FATAL,
1752                "Error: the video system does not support an image\n"
1753                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1754                         "to reduce the image size.\n", vp->width, vp->height );
1755         do_exit(is);
1756     }
1757
1758     SDL_LockMutex(is->pictq.mutex);
1759     vp->allocated = 1;
1760     SDL_CondSignal(is->pictq.cond);
1761     SDL_UnlockMutex(is->pictq.mutex);
1762 }
1763
1764 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1765     int i, width, height;
1766     Uint8 *p, *maxp;
1767     for (i = 0; i < 3; i++) {
1768         width  = bmp->w;
1769         height = bmp->h;
1770         if (i > 0) {
1771             width  >>= 1;
1772             height >>= 1;
1773         }
1774         if (bmp->pitches[i] > width) {
1775             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1776             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1777                 *(p+1) = *p;
1778         }
1779     }
1780 }
1781
1782 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1783 {
1784     Frame *vp;
1785
1786 #if defined(DEBUG_SYNC) && 0
1787     printf("frame_type=%c pts=%0.3f\n",
1788            av_get_picture_type_char(src_frame->pict_type), pts);
1789 #endif
1790
1791     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1792         return -1;
1793
1794     vp->sar = src_frame->sample_aspect_ratio;
1795
1796     /* alloc or resize hardware picture buffer */
1797     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1798         vp->width  != src_frame->width ||
1799         vp->height != src_frame->height) {
1800         SDL_Event event;
1801
1802         vp->allocated  = 0;
1803         vp->reallocate = 0;
1804         vp->width = src_frame->width;
1805         vp->height = src_frame->height;
1806
1807         /* the allocation must be done in the main thread to avoid
1808            locking problems. */
1809         event.type = FF_ALLOC_EVENT;
1810         event.user.data1 = is;
1811         SDL_PushEvent(&event);
1812
1813         /* wait until the picture is allocated */
1814         SDL_LockMutex(is->pictq.mutex);
1815         while (!vp->allocated && !is->videoq.abort_request) {
1816             SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1817         }
1818         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1819         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1820             while (!vp->allocated && !is->abort_request) {
1821                 SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1822             }
1823         }
1824         SDL_UnlockMutex(is->pictq.mutex);
1825
1826         if (is->videoq.abort_request)
1827             return -1;
1828     }
1829
1830     /* if the frame is not skipped, then display it */
1831     if (vp->bmp) {
1832         AVPicture pict = { { 0 } };
1833
1834         /* get a pointer on the bitmap */
1835         SDL_LockYUVOverlay (vp->bmp);
1836
1837         pict.data[0] = vp->bmp->pixels[0];
1838         pict.data[1] = vp->bmp->pixels[2];
1839         pict.data[2] = vp->bmp->pixels[1];
1840
1841         pict.linesize[0] = vp->bmp->pitches[0];
1842         pict.linesize[1] = vp->bmp->pitches[2];
1843         pict.linesize[2] = vp->bmp->pitches[1];
1844
1845 #if CONFIG_AVFILTER
1846         // FIXME use direct rendering
1847         av_picture_copy(&pict, (AVPicture *)src_frame,
1848                         src_frame->format, vp->width, vp->height);
1849 #else
1850         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1851         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1852             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1853             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1854         if (!is->img_convert_ctx) {
1855             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1856             exit(1);
1857         }
1858         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1859                   0, vp->height, pict.data, pict.linesize);
1860 #endif
1861         /* workaround SDL PITCH_WORKAROUND */
1862         duplicate_right_border_pixels(vp->bmp);
1863         /* update the bitmap content */
1864         SDL_UnlockYUVOverlay(vp->bmp);
1865
1866         vp->pts = pts;
1867         vp->duration = duration;
1868         vp->pos = pos;
1869         vp->serial = serial;
1870
1871         /* now we can update the picture count */
1872         frame_queue_push(&is->pictq);
1873     }
1874     return 0;
1875 }
1876
1877 static int get_video_frame(VideoState *is, AVFrame *frame)
1878 {
1879     int got_picture;
1880
1881     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1882         return -1;
1883
1884     if (got_picture) {
1885         double dpts = NAN;
1886
1887         if (frame->pts != AV_NOPTS_VALUE)
1888             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1889
1890         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1891
1892         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1893             if (frame->pts != AV_NOPTS_VALUE) {
1894                 double diff = dpts - get_master_clock(is);
1895                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1896                     diff - is->frame_last_filter_delay < 0 &&
1897                     is->viddec.pkt_serial == is->vidclk.serial &&
1898                     is->videoq.nb_packets) {
1899                     is->frame_drops_early++;
1900                     av_frame_unref(frame);
1901                     got_picture = 0;
1902                 }
1903             }
1904         }
1905     }
1906
1907     return got_picture;
1908 }
1909
1910 #if CONFIG_AVFILTER
1911 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1912                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1913 {
1914     int ret, i;
1915     int nb_filters = graph->nb_filters;
1916     AVFilterInOut *outputs = NULL, *inputs = NULL;
1917
1918     if (filtergraph) {
1919         outputs = avfilter_inout_alloc();
1920         inputs  = avfilter_inout_alloc();
1921         if (!outputs || !inputs) {
1922             ret = AVERROR(ENOMEM);
1923             goto fail;
1924         }
1925
1926         outputs->name       = av_strdup("in");
1927         outputs->filter_ctx = source_ctx;
1928         outputs->pad_idx    = 0;
1929         outputs->next       = NULL;
1930
1931         inputs->name        = av_strdup("out");
1932         inputs->filter_ctx  = sink_ctx;
1933         inputs->pad_idx     = 0;
1934         inputs->next        = NULL;
1935
1936         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1937             goto fail;
1938     } else {
1939         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1940             goto fail;
1941     }
1942
1943     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1944     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1945         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1946
1947     ret = avfilter_graph_config(graph, NULL);
1948 fail:
1949     avfilter_inout_free(&outputs);
1950     avfilter_inout_free(&inputs);
1951     return ret;
1952 }
1953
1954 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1955 {
1956     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1957     char sws_flags_str[128];
1958     char buffersrc_args[256];
1959     int ret;
1960     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1961     AVCodecContext *codec = is->video_st->codec;
1962     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1963
1964     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1965     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1966     graph->scale_sws_opts = av_strdup(sws_flags_str);
1967
1968     snprintf(buffersrc_args, sizeof(buffersrc_args),
1969              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1970              frame->width, frame->height, frame->format,
1971              is->video_st->time_base.num, is->video_st->time_base.den,
1972              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1973     if (fr.num && fr.den)
1974         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1975
1976     if ((ret = avfilter_graph_create_filter(&filt_src,
1977                                             avfilter_get_by_name("buffer"),
1978                                             "ffplay_buffer", buffersrc_args, NULL,
1979                                             graph)) < 0)
1980         goto fail;
1981
1982     ret = avfilter_graph_create_filter(&filt_out,
1983                                        avfilter_get_by_name("buffersink"),
1984                                        "ffplay_buffersink", NULL, NULL, graph);
1985     if (ret < 0)
1986         goto fail;
1987
1988     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1989         goto fail;
1990
1991     last_filter = filt_out;
1992
1993 /* Note: this macro adds a filter before the lastly added filter, so the
1994  * processing order of the filters is in reverse */
1995 #define INSERT_FILT(name, arg) do {                                         \
1996     AVFilterContext *filt_ctx;                                              \
1997                                                                             \
1998     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1999                                        avfilter_get_by_name(name),          \
2000                                        "ffplay_" name, arg, NULL, graph);   \
2001     if (ret < 0)                                                            \
2002         goto fail;                                                          \
2003                                                                             \
2004     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                       \
2005     if (ret < 0)                                                            \
2006         goto fail;                                                          \
2007                                                                             \
2008     last_filter = filt_ctx;                                                 \
2009 } while (0)
2010
2011     /* SDL YUV code is not handling odd width/height for some driver
2012      * combinations, therefore we crop the picture to an even width/height. */
2013     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
2014
2015     if (autorotate) {
2016         AVDictionaryEntry *rotate_tag = av_dict_get(is->video_st->metadata, "rotate", NULL, 0);
2017         if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2018             if (!strcmp(rotate_tag->value, "90")) {
2019                 INSERT_FILT("transpose", "clock");
2020             } else if (!strcmp(rotate_tag->value, "180")) {
2021                 INSERT_FILT("hflip", NULL);
2022                 INSERT_FILT("vflip", NULL);
2023             } else if (!strcmp(rotate_tag->value, "270")) {
2024                 INSERT_FILT("transpose", "cclock");
2025             } else {
2026                 char rotate_buf[64];
2027                 snprintf(rotate_buf, sizeof(rotate_buf), "%s*PI/180", rotate_tag->value);
2028                 INSERT_FILT("rotate", rotate_buf);
2029             }
2030         }
2031     }
2032
2033     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
2034         goto fail;
2035
2036     is->in_video_filter  = filt_src;
2037     is->out_video_filter = filt_out;
2038
2039 fail:
2040     return ret;
2041 }
2042
2043 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
2044 {
2045     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
2046     int sample_rates[2] = { 0, -1 };
2047     int64_t channel_layouts[2] = { 0, -1 };
2048     int channels[2] = { 0, -1 };
2049     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
2050     char aresample_swr_opts[512] = "";
2051     AVDictionaryEntry *e = NULL;
2052     char asrc_args[256];
2053     int ret;
2054
2055     avfilter_graph_free(&is->agraph);
2056     if (!(is->agraph = avfilter_graph_alloc()))
2057         return AVERROR(ENOMEM);
2058
2059     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
2060         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
2061     if (strlen(aresample_swr_opts))
2062         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
2063     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
2064
2065     ret = snprintf(asrc_args, sizeof(asrc_args),
2066                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
2067                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
2068                    is->audio_filter_src.channels,
2069                    1, is->audio_filter_src.freq);
2070     if (is->audio_filter_src.channel_layout)
2071         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
2072                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
2073
2074     ret = avfilter_graph_create_filter(&filt_asrc,
2075                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
2076                                        asrc_args, NULL, is->agraph);
2077     if (ret < 0)
2078         goto end;
2079
2080
2081     ret = avfilter_graph_create_filter(&filt_asink,
2082                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2083                                        NULL, NULL, is->agraph);
2084     if (ret < 0)
2085         goto end;
2086
2087     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2088         goto end;
2089     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2090         goto end;
2091
2092     if (force_output_format) {
2093         channel_layouts[0] = is->audio_tgt.channel_layout;
2094         channels       [0] = is->audio_tgt.channels;
2095         sample_rates   [0] = is->audio_tgt.freq;
2096         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2097             goto end;
2098         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2099             goto end;
2100         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2101             goto end;
2102         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2103             goto end;
2104     }
2105
2106
2107     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2108         goto end;
2109
2110     is->in_audio_filter  = filt_asrc;
2111     is->out_audio_filter = filt_asink;
2112
2113 end:
2114     if (ret < 0)
2115         avfilter_graph_free(&is->agraph);
2116     return ret;
2117 }
2118 #endif  /* CONFIG_AVFILTER */
2119
2120 static int audio_thread(void *arg)
2121 {
2122     VideoState *is = arg;
2123     AVFrame *frame = av_frame_alloc();
2124     Frame *af;
2125 #if CONFIG_AVFILTER
2126     int last_serial = -1;
2127     int64_t dec_channel_layout;
2128     int reconfigure;
2129 #endif
2130     int got_frame = 0;
2131     AVRational tb;
2132     int ret = 0;
2133
2134     if (!frame)
2135         return AVERROR(ENOMEM);
2136
2137     do {
2138         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2139             goto the_end;
2140
2141         if (got_frame) {
2142                 tb = (AVRational){1, frame->sample_rate};
2143
2144 #if CONFIG_AVFILTER
2145                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, av_frame_get_channels(frame));
2146
2147                 reconfigure =
2148                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2149                                    frame->format, av_frame_get_channels(frame))    ||
2150                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2151                     is->audio_filter_src.freq           != frame->sample_rate ||
2152                     is->auddec.pkt_serial               != last_serial;
2153
2154                 if (reconfigure) {
2155                     char buf1[1024], buf2[1024];
2156                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2157                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2158                     av_log(NULL, AV_LOG_DEBUG,
2159                            "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",
2160                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2161                            frame->sample_rate, av_frame_get_channels(frame), av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2162
2163                     is->audio_filter_src.fmt            = frame->format;
2164                     is->audio_filter_src.channels       = av_frame_get_channels(frame);
2165                     is->audio_filter_src.channel_layout = dec_channel_layout;
2166                     is->audio_filter_src.freq           = frame->sample_rate;
2167                     last_serial                         = is->auddec.pkt_serial;
2168
2169                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2170                         goto the_end;
2171                 }
2172
2173             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2174                 goto the_end;
2175
2176             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2177                 tb = is->out_audio_filter->inputs[0]->time_base;
2178 #endif
2179                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2180                     goto the_end;
2181
2182                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2183                 af->pos = av_frame_get_pkt_pos(frame);
2184                 af->serial = is->auddec.pkt_serial;
2185                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2186
2187                 av_frame_move_ref(af->frame, frame);
2188                 frame_queue_push(&is->sampq);
2189
2190 #if CONFIG_AVFILTER
2191                 if (is->audioq.serial != is->auddec.pkt_serial)
2192                     break;
2193             }
2194             if (ret == AVERROR_EOF)
2195                 is->auddec.finished = is->auddec.pkt_serial;
2196 #endif
2197         }
2198     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2199  the_end:
2200 #if CONFIG_AVFILTER
2201     avfilter_graph_free(&is->agraph);
2202 #endif
2203     av_frame_free(&frame);
2204     return ret;
2205 }
2206
2207 static void decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2208 {
2209     packet_queue_start(d->queue);
2210     d->decoder_tid = SDL_CreateThread(fn, arg);
2211 }
2212
2213 static int video_thread(void *arg)
2214 {
2215     VideoState *is = arg;
2216     AVFrame *frame = av_frame_alloc();
2217     double pts;
2218     double duration;
2219     int ret;
2220     AVRational tb = is->video_st->time_base;
2221     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2222
2223 #if CONFIG_AVFILTER
2224     AVFilterGraph *graph = avfilter_graph_alloc();
2225     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2226     int last_w = 0;
2227     int last_h = 0;
2228     enum AVPixelFormat last_format = -2;
2229     int last_serial = -1;
2230     int last_vfilter_idx = 0;
2231 #endif
2232
2233     for (;;) {
2234         ret = get_video_frame(is, frame);
2235         if (ret < 0)
2236             goto the_end;
2237         if (!ret)
2238             continue;
2239
2240 #if CONFIG_AVFILTER
2241         if (   last_w != frame->width
2242             || last_h != frame->height
2243             || last_format != frame->format
2244             || last_serial != is->viddec.pkt_serial
2245             || last_vfilter_idx != is->vfilter_idx) {
2246             av_log(NULL, AV_LOG_DEBUG,
2247                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2248                    last_w, last_h,
2249                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2250                    frame->width, frame->height,
2251                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2252             avfilter_graph_free(&graph);
2253             graph = avfilter_graph_alloc();
2254             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2255                 SDL_Event event;
2256                 event.type = FF_QUIT_EVENT;
2257                 event.user.data1 = is;
2258                 SDL_PushEvent(&event);
2259                 goto the_end;
2260             }
2261             filt_in  = is->in_video_filter;
2262             filt_out = is->out_video_filter;
2263             last_w = frame->width;
2264             last_h = frame->height;
2265             last_format = frame->format;
2266             last_serial = is->viddec.pkt_serial;
2267             last_vfilter_idx = is->vfilter_idx;
2268             frame_rate = filt_out->inputs[0]->frame_rate;
2269         }
2270
2271         ret = av_buffersrc_add_frame(filt_in, frame);
2272         if (ret < 0)
2273             goto the_end;
2274
2275         while (ret >= 0) {
2276             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2277
2278             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2279             if (ret < 0) {
2280                 if (ret == AVERROR_EOF)
2281                     is->viddec.finished = is->viddec.pkt_serial;
2282                 ret = 0;
2283                 break;
2284             }
2285
2286             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2287             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2288                 is->frame_last_filter_delay = 0;
2289             tb = filt_out->inputs[0]->time_base;
2290 #endif
2291             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2292             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2293             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), is->viddec.pkt_serial);
2294             av_frame_unref(frame);
2295 #if CONFIG_AVFILTER
2296         }
2297 #endif
2298
2299         if (ret < 0)
2300             goto the_end;
2301     }
2302  the_end:
2303 #if CONFIG_AVFILTER
2304     avfilter_graph_free(&graph);
2305 #endif
2306     av_frame_free(&frame);
2307     return 0;
2308 }
2309
2310 static int subtitle_thread(void *arg)
2311 {
2312     VideoState *is = arg;
2313     Frame *sp;
2314     int got_subtitle;
2315     double pts;
2316     int i, j;
2317     int r, g, b, y, u, v, a;
2318
2319     for (;;) {
2320         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2321             return 0;
2322
2323         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2324             break;
2325
2326         pts = 0;
2327
2328         if (got_subtitle && sp->sub.format == 0) {
2329             if (sp->sub.pts != AV_NOPTS_VALUE)
2330                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2331             sp->pts = pts;
2332             sp->serial = is->subdec.pkt_serial;
2333
2334             for (i = 0; i < sp->sub.num_rects; i++)
2335             {
2336                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2337                 {
2338                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2339                     y = RGB_TO_Y_CCIR(r, g, b);
2340                     u = RGB_TO_U_CCIR(r, g, b, 0);
2341                     v = RGB_TO_V_CCIR(r, g, b, 0);
2342                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2343                 }
2344             }
2345
2346             /* now we can update the picture count */
2347             frame_queue_push(&is->subpq);
2348         } else if (got_subtitle) {
2349             avsubtitle_free(&sp->sub);
2350         }
2351     }
2352     return 0;
2353 }
2354
2355 /* copy samples for viewing in editor window */
2356 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2357 {
2358     int size, len;
2359
2360     size = samples_size / sizeof(short);
2361     while (size > 0) {
2362         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2363         if (len > size)
2364             len = size;
2365         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2366         samples += len;
2367         is->sample_array_index += len;
2368         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2369             is->sample_array_index = 0;
2370         size -= len;
2371     }
2372 }
2373
2374 /* return the wanted number of samples to get better sync if sync_type is video
2375  * or external master clock */
2376 static int synchronize_audio(VideoState *is, int nb_samples)
2377 {
2378     int wanted_nb_samples = nb_samples;
2379
2380     /* if not master, then we try to remove or add samples to correct the clock */
2381     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2382         double diff, avg_diff;
2383         int min_nb_samples, max_nb_samples;
2384
2385         diff = get_clock(&is->audclk) - get_master_clock(is);
2386
2387         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2388             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2389             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2390                 /* not enough measures to have a correct estimate */
2391                 is->audio_diff_avg_count++;
2392             } else {
2393                 /* estimate the A-V difference */
2394                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2395
2396                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2397                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2398                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2399                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2400                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2401                 }
2402                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2403                         diff, avg_diff, wanted_nb_samples - nb_samples,
2404                         is->audio_clock, is->audio_diff_threshold);
2405             }
2406         } else {
2407             /* too big difference : may be initial PTS errors, so
2408                reset A-V filter */
2409             is->audio_diff_avg_count = 0;
2410             is->audio_diff_cum       = 0;
2411         }
2412     }
2413
2414     return wanted_nb_samples;
2415 }
2416
2417 /**
2418  * Decode one audio frame and return its uncompressed size.
2419  *
2420  * The processed audio frame is decoded, converted if required, and
2421  * stored in is->audio_buf, with size in bytes given by the return
2422  * value.
2423  */
2424 static int audio_decode_frame(VideoState *is)
2425 {
2426     int data_size, resampled_data_size;
2427     int64_t dec_channel_layout;
2428     av_unused double audio_clock0;
2429     int wanted_nb_samples;
2430     Frame *af;
2431
2432     if (is->paused)
2433         return -1;
2434
2435     do {
2436         if (!(af = frame_queue_peek_readable(&is->sampq)))
2437             return -1;
2438         frame_queue_next(&is->sampq);
2439     } while (af->serial != is->audioq.serial);
2440
2441     data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(af->frame),
2442                                            af->frame->nb_samples,
2443                                            af->frame->format, 1);
2444
2445     dec_channel_layout =
2446         (af->frame->channel_layout && av_frame_get_channels(af->frame) == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2447         af->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(af->frame));
2448     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2449
2450     if (af->frame->format        != is->audio_src.fmt            ||
2451         dec_channel_layout       != is->audio_src.channel_layout ||
2452         af->frame->sample_rate   != is->audio_src.freq           ||
2453         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2454         swr_free(&is->swr_ctx);
2455         is->swr_ctx = swr_alloc_set_opts(NULL,
2456                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2457                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2458                                          0, NULL);
2459         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2460             av_log(NULL, AV_LOG_ERROR,
2461                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2462                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), av_frame_get_channels(af->frame),
2463                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2464             swr_free(&is->swr_ctx);
2465             return -1;
2466         }
2467         is->audio_src.channel_layout = dec_channel_layout;
2468         is->audio_src.channels       = av_frame_get_channels(af->frame);
2469         is->audio_src.freq = af->frame->sample_rate;
2470         is->audio_src.fmt = af->frame->format;
2471     }
2472
2473     if (is->swr_ctx) {
2474         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2475         uint8_t **out = &is->audio_buf1;
2476         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2477         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2478         int len2;
2479         if (out_size < 0) {
2480             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2481             return -1;
2482         }
2483         if (wanted_nb_samples != af->frame->nb_samples) {
2484             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2485                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2486                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2487                 return -1;
2488             }
2489         }
2490         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2491         if (!is->audio_buf1)
2492             return AVERROR(ENOMEM);
2493         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2494         if (len2 < 0) {
2495             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2496             return -1;
2497         }
2498         if (len2 == out_count) {
2499             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2500             if (swr_init(is->swr_ctx) < 0)
2501                 swr_free(&is->swr_ctx);
2502         }
2503         is->audio_buf = is->audio_buf1;
2504         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2505     } else {
2506         is->audio_buf = af->frame->data[0];
2507         resampled_data_size = data_size;
2508     }
2509
2510     audio_clock0 = is->audio_clock;
2511     /* update the audio clock with the pts */
2512     if (!isnan(af->pts))
2513         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2514     else
2515         is->audio_clock = NAN;
2516     is->audio_clock_serial = af->serial;
2517 #ifdef DEBUG
2518     {
2519         static double last_clock;
2520         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2521                is->audio_clock - last_clock,
2522                is->audio_clock, audio_clock0);
2523         last_clock = is->audio_clock;
2524     }
2525 #endif
2526     return resampled_data_size;
2527 }
2528
2529 /* prepare a new audio buffer */
2530 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2531 {
2532     VideoState *is = opaque;
2533     int audio_size, len1;
2534
2535     audio_callback_time = av_gettime_relative();
2536
2537     while (len > 0) {
2538         if (is->audio_buf_index >= is->audio_buf_size) {
2539            audio_size = audio_decode_frame(is);
2540            if (audio_size < 0) {
2541                 /* if error, just output silence */
2542                is->audio_buf      = is->silence_buf;
2543                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2544            } else {
2545                if (is->show_mode != SHOW_MODE_VIDEO)
2546                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2547                is->audio_buf_size = audio_size;
2548            }
2549            is->audio_buf_index = 0;
2550         }
2551         len1 = is->audio_buf_size - is->audio_buf_index;
2552         if (len1 > len)
2553             len1 = len;
2554         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2555         len -= len1;
2556         stream += len1;
2557         is->audio_buf_index += len1;
2558     }
2559     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2560     /* Let's assume the audio driver that is used by SDL has two periods. */
2561     if (!isnan(is->audio_clock)) {
2562         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);
2563         sync_clock_to_slave(&is->extclk, &is->audclk);
2564     }
2565 }
2566
2567 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2568 {
2569     SDL_AudioSpec wanted_spec, spec;
2570     const char *env;
2571     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2572     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2573     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2574
2575     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2576     if (env) {
2577         wanted_nb_channels = atoi(env);
2578         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2579     }
2580     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2581         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2582         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2583     }
2584     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2585     wanted_spec.channels = wanted_nb_channels;
2586     wanted_spec.freq = wanted_sample_rate;
2587     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2588         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2589         return -1;
2590     }
2591     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2592         next_sample_rate_idx--;
2593     wanted_spec.format = AUDIO_S16SYS;
2594     wanted_spec.silence = 0;
2595     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2596     wanted_spec.callback = sdl_audio_callback;
2597     wanted_spec.userdata = opaque;
2598     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2599         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2600                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2601         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2602         if (!wanted_spec.channels) {
2603             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2604             wanted_spec.channels = wanted_nb_channels;
2605             if (!wanted_spec.freq) {
2606                 av_log(NULL, AV_LOG_ERROR,
2607                        "No more combinations to try, audio open failed\n");
2608                 return -1;
2609             }
2610         }
2611         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2612     }
2613     if (spec.format != AUDIO_S16SYS) {
2614         av_log(NULL, AV_LOG_ERROR,
2615                "SDL advised audio format %d is not supported!\n", spec.format);
2616         return -1;
2617     }
2618     if (spec.channels != wanted_spec.channels) {
2619         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2620         if (!wanted_channel_layout) {
2621             av_log(NULL, AV_LOG_ERROR,
2622                    "SDL advised channel count %d is not supported!\n", spec.channels);
2623             return -1;
2624         }
2625     }
2626
2627     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2628     audio_hw_params->freq = spec.freq;
2629     audio_hw_params->channel_layout = wanted_channel_layout;
2630     audio_hw_params->channels =  spec.channels;
2631     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2632     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);
2633     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2634         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2635         return -1;
2636     }
2637     return spec.size;
2638 }
2639
2640 /* open a given stream. Return 0 if OK */
2641 static int stream_component_open(VideoState *is, int stream_index)
2642 {
2643     AVFormatContext *ic = is->ic;
2644     AVCodecContext *avctx;
2645     AVCodec *codec;
2646     const char *forced_codec_name = NULL;
2647     AVDictionary *opts;
2648     AVDictionaryEntry *t = NULL;
2649     int sample_rate, nb_channels;
2650     int64_t channel_layout;
2651     int ret = 0;
2652     int stream_lowres = lowres;
2653
2654     if (stream_index < 0 || stream_index >= ic->nb_streams)
2655         return -1;
2656     avctx = ic->streams[stream_index]->codec;
2657
2658     codec = avcodec_find_decoder(avctx->codec_id);
2659
2660     switch(avctx->codec_type){
2661         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2662         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2663         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2664     }
2665     if (forced_codec_name)
2666         codec = avcodec_find_decoder_by_name(forced_codec_name);
2667     if (!codec) {
2668         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2669                                       "No codec could be found with name '%s'\n", forced_codec_name);
2670         else                   av_log(NULL, AV_LOG_WARNING,
2671                                       "No codec could be found with id %d\n", avctx->codec_id);
2672         return -1;
2673     }
2674
2675     avctx->codec_id = codec->id;
2676     if(stream_lowres > av_codec_get_max_lowres(codec)){
2677         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2678                 av_codec_get_max_lowres(codec));
2679         stream_lowres = av_codec_get_max_lowres(codec);
2680     }
2681     av_codec_set_lowres(avctx, stream_lowres);
2682
2683     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2684     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2685     if(codec->capabilities & CODEC_CAP_DR1)
2686         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2687
2688     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2689     if (!av_dict_get(opts, "threads", NULL, 0))
2690         av_dict_set(&opts, "threads", "auto", 0);
2691     if (stream_lowres)
2692         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2693     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2694         av_dict_set(&opts, "refcounted_frames", "1", 0);
2695     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2696         goto fail;
2697     }
2698     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2699         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2700         ret =  AVERROR_OPTION_NOT_FOUND;
2701         goto fail;
2702     }
2703
2704     is->eof = 0;
2705     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2706     switch (avctx->codec_type) {
2707     case AVMEDIA_TYPE_AUDIO:
2708 #if CONFIG_AVFILTER
2709         {
2710             AVFilterLink *link;
2711
2712             is->audio_filter_src.freq           = avctx->sample_rate;
2713             is->audio_filter_src.channels       = avctx->channels;
2714             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2715             is->audio_filter_src.fmt            = avctx->sample_fmt;
2716             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2717                 goto fail;
2718             link = is->out_audio_filter->inputs[0];
2719             sample_rate    = link->sample_rate;
2720             nb_channels    = link->channels;
2721             channel_layout = link->channel_layout;
2722         }
2723 #else
2724         sample_rate    = avctx->sample_rate;
2725         nb_channels    = avctx->channels;
2726         channel_layout = avctx->channel_layout;
2727 #endif
2728
2729         /* prepare audio output */
2730         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2731             goto fail;
2732         is->audio_hw_buf_size = ret;
2733         is->audio_src = is->audio_tgt;
2734         is->audio_buf_size  = 0;
2735         is->audio_buf_index = 0;
2736
2737         /* init averaging filter */
2738         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2739         is->audio_diff_avg_count = 0;
2740         /* since we do not have a precise anough audio fifo fullness,
2741            we correct audio sync only if larger than this threshold */
2742         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2743
2744         is->audio_stream = stream_index;
2745         is->audio_st = ic->streams[stream_index];
2746
2747         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2748         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2749             is->auddec.start_pts = is->audio_st->start_time;
2750             is->auddec.start_pts_tb = is->audio_st->time_base;
2751         }
2752         decoder_start(&is->auddec, audio_thread, is);
2753         SDL_PauseAudio(0);
2754         break;
2755     case AVMEDIA_TYPE_VIDEO:
2756         is->video_stream = stream_index;
2757         is->video_st = ic->streams[stream_index];
2758
2759         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2760         decoder_start(&is->viddec, video_thread, is);
2761         is->queue_attachments_req = 1;
2762         break;
2763     case AVMEDIA_TYPE_SUBTITLE:
2764         is->subtitle_stream = stream_index;
2765         is->subtitle_st = ic->streams[stream_index];
2766
2767         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2768         decoder_start(&is->subdec, subtitle_thread, is);
2769         break;
2770     default:
2771         break;
2772     }
2773
2774 fail:
2775     av_dict_free(&opts);
2776
2777     return ret;
2778 }
2779
2780 static void stream_component_close(VideoState *is, int stream_index)
2781 {
2782     AVFormatContext *ic = is->ic;
2783     AVCodecContext *avctx;
2784
2785     if (stream_index < 0 || stream_index >= ic->nb_streams)
2786         return;
2787     avctx = ic->streams[stream_index]->codec;
2788
2789     switch (avctx->codec_type) {
2790     case AVMEDIA_TYPE_AUDIO:
2791         decoder_abort(&is->auddec, &is->sampq);
2792         SDL_CloseAudio();
2793         decoder_destroy(&is->auddec);
2794         swr_free(&is->swr_ctx);
2795         av_freep(&is->audio_buf1);
2796         is->audio_buf1_size = 0;
2797         is->audio_buf = NULL;
2798
2799         if (is->rdft) {
2800             av_rdft_end(is->rdft);
2801             av_freep(&is->rdft_data);
2802             is->rdft = NULL;
2803             is->rdft_bits = 0;
2804         }
2805         break;
2806     case AVMEDIA_TYPE_VIDEO:
2807         decoder_abort(&is->viddec, &is->pictq);
2808         decoder_destroy(&is->viddec);
2809         break;
2810     case AVMEDIA_TYPE_SUBTITLE:
2811         decoder_abort(&is->subdec, &is->subpq);
2812         decoder_destroy(&is->subdec);
2813         break;
2814     default:
2815         break;
2816     }
2817
2818     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2819     avcodec_close(avctx);
2820     switch (avctx->codec_type) {
2821     case AVMEDIA_TYPE_AUDIO:
2822         is->audio_st = NULL;
2823         is->audio_stream = -1;
2824         break;
2825     case AVMEDIA_TYPE_VIDEO:
2826         is->video_st = NULL;
2827         is->video_stream = -1;
2828         break;
2829     case AVMEDIA_TYPE_SUBTITLE:
2830         is->subtitle_st = NULL;
2831         is->subtitle_stream = -1;
2832         break;
2833     default:
2834         break;
2835     }
2836 }
2837
2838 static int decode_interrupt_cb(void *ctx)
2839 {
2840     VideoState *is = ctx;
2841     return is->abort_request;
2842 }
2843
2844 static int is_realtime(AVFormatContext *s)
2845 {
2846     if(   !strcmp(s->iformat->name, "rtp")
2847        || !strcmp(s->iformat->name, "rtsp")
2848        || !strcmp(s->iformat->name, "sdp")
2849     )
2850         return 1;
2851
2852     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2853                  || !strncmp(s->filename, "udp:", 4)
2854                 )
2855     )
2856         return 1;
2857     return 0;
2858 }
2859
2860 /* this thread gets the stream from the disk or the network */
2861 static int read_thread(void *arg)
2862 {
2863     VideoState *is = arg;
2864     AVFormatContext *ic = NULL;
2865     int err, i, ret;
2866     int st_index[AVMEDIA_TYPE_NB];
2867     AVPacket pkt1, *pkt = &pkt1;
2868     int64_t stream_start_time;
2869     int pkt_in_play_range = 0;
2870     AVDictionaryEntry *t;
2871     AVDictionary **opts;
2872     int orig_nb_streams;
2873     SDL_mutex *wait_mutex = SDL_CreateMutex();
2874     int scan_all_pmts_set = 0;
2875     int64_t pkt_ts;
2876
2877     memset(st_index, -1, sizeof(st_index));
2878     is->last_video_stream = is->video_stream = -1;
2879     is->last_audio_stream = is->audio_stream = -1;
2880     is->last_subtitle_stream = is->subtitle_stream = -1;
2881     is->eof = 0;
2882
2883     ic = avformat_alloc_context();
2884     ic->interrupt_callback.callback = decode_interrupt_cb;
2885     ic->interrupt_callback.opaque = is;
2886     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2887         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2888         scan_all_pmts_set = 1;
2889     }
2890     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2891     if (err < 0) {
2892         print_error(is->filename, err);
2893         ret = -1;
2894         goto fail;
2895     }
2896     if (scan_all_pmts_set)
2897         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2898
2899     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2900         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2901         ret = AVERROR_OPTION_NOT_FOUND;
2902         goto fail;
2903     }
2904     is->ic = ic;
2905
2906     if (genpts)
2907         ic->flags |= AVFMT_FLAG_GENPTS;
2908
2909     av_format_inject_global_side_data(ic);
2910
2911     opts = setup_find_stream_info_opts(ic, codec_opts);
2912     orig_nb_streams = ic->nb_streams;
2913
2914     err = avformat_find_stream_info(ic, opts);
2915
2916     for (i = 0; i < orig_nb_streams; i++)
2917         av_dict_free(&opts[i]);
2918     av_freep(&opts);
2919
2920     if (err < 0) {
2921         av_log(NULL, AV_LOG_WARNING,
2922                "%s: could not find codec parameters\n", is->filename);
2923         ret = -1;
2924         goto fail;
2925     }
2926
2927     if (ic->pb)
2928         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2929
2930     if (seek_by_bytes < 0)
2931         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2932
2933     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2934
2935     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2936         window_title = av_asprintf("%s - %s", t->value, input_filename);
2937
2938     /* if seeking requested, we execute it */
2939     if (start_time != AV_NOPTS_VALUE) {
2940         int64_t timestamp;
2941
2942         timestamp = start_time;
2943         /* add the stream start time */
2944         if (ic->start_time != AV_NOPTS_VALUE)
2945             timestamp += ic->start_time;
2946         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2947         if (ret < 0) {
2948             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2949                     is->filename, (double)timestamp / AV_TIME_BASE);
2950         }
2951     }
2952
2953     is->realtime = is_realtime(ic);
2954
2955     if (show_status)
2956         av_dump_format(ic, 0, is->filename, 0);
2957
2958     for (i = 0; i < ic->nb_streams; i++) {
2959         AVStream *st = ic->streams[i];
2960         enum AVMediaType type = st->codec->codec_type;
2961         st->discard = AVDISCARD_ALL;
2962         if (wanted_stream_spec[type] && st_index[type] == -1)
2963             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2964                 st_index[type] = i;
2965     }
2966     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2967         if (wanted_stream_spec[i] && st_index[i] == -1) {
2968             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));
2969             st_index[i] = INT_MAX;
2970         }
2971     }
2972
2973     if (!video_disable)
2974         st_index[AVMEDIA_TYPE_VIDEO] =
2975             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2976                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2977     if (!audio_disable)
2978         st_index[AVMEDIA_TYPE_AUDIO] =
2979             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2980                                 st_index[AVMEDIA_TYPE_AUDIO],
2981                                 st_index[AVMEDIA_TYPE_VIDEO],
2982                                 NULL, 0);
2983     if (!video_disable && !subtitle_disable)
2984         st_index[AVMEDIA_TYPE_SUBTITLE] =
2985             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2986                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2987                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2988                                  st_index[AVMEDIA_TYPE_AUDIO] :
2989                                  st_index[AVMEDIA_TYPE_VIDEO]),
2990                                 NULL, 0);
2991
2992     is->show_mode = show_mode;
2993     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2994         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2995         AVCodecContext *avctx = st->codec;
2996         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2997         if (avctx->width)
2998             set_default_window_size(avctx->width, avctx->height, sar);
2999     }
3000
3001     /* open the streams */
3002     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
3003         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
3004     }
3005
3006     ret = -1;
3007     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
3008         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
3009     }
3010     if (is->show_mode == SHOW_MODE_NONE)
3011         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
3012
3013     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
3014         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
3015     }
3016
3017     if (is->video_stream < 0 && is->audio_stream < 0) {
3018         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
3019                is->filename);
3020         ret = -1;
3021         goto fail;
3022     }
3023
3024     if (infinite_buffer < 0 && is->realtime)
3025         infinite_buffer = 1;
3026
3027     for (;;) {
3028         if (is->abort_request)
3029             break;
3030         if (is->paused != is->last_paused) {
3031             is->last_paused = is->paused;
3032             if (is->paused)
3033                 is->read_pause_return = av_read_pause(ic);
3034             else
3035                 av_read_play(ic);
3036         }
3037 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
3038         if (is->paused &&
3039                 (!strcmp(ic->iformat->name, "rtsp") ||
3040                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
3041             /* wait 10 ms to avoid trying to get another packet */
3042             /* XXX: horrible */
3043             SDL_Delay(10);
3044             continue;
3045         }
3046 #endif
3047         if (is->seek_req) {
3048             int64_t seek_target = is->seek_pos;
3049             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
3050             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
3051 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
3052 //      of the seek_pos/seek_rel variables
3053
3054             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
3055             if (ret < 0) {
3056                 av_log(NULL, AV_LOG_ERROR,
3057                        "%s: error while seeking\n", is->ic->filename);
3058             } else {
3059                 if (is->audio_stream >= 0) {
3060                     packet_queue_flush(&is->audioq);
3061                     packet_queue_put(&is->audioq, &flush_pkt);
3062                 }
3063                 if (is->subtitle_stream >= 0) {
3064                     packet_queue_flush(&is->subtitleq);
3065                     packet_queue_put(&is->subtitleq, &flush_pkt);
3066                 }
3067                 if (is->video_stream >= 0) {
3068                     packet_queue_flush(&is->videoq);
3069                     packet_queue_put(&is->videoq, &flush_pkt);
3070                 }
3071                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
3072                    set_clock(&is->extclk, NAN, 0);
3073                 } else {
3074                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
3075                 }
3076             }
3077             is->seek_req = 0;
3078             is->queue_attachments_req = 1;
3079             is->eof = 0;
3080             if (is->paused)
3081                 step_to_next_frame(is);
3082         }
3083         if (is->queue_attachments_req) {
3084             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
3085                 AVPacket copy;
3086                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
3087                     goto fail;
3088                 packet_queue_put(&is->videoq, &copy);
3089                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3090             }
3091             is->queue_attachments_req = 0;
3092         }
3093
3094         /* if the queue are full, no need to read more */
3095         if (infinite_buffer<1 &&
3096               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3097             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
3098                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
3099                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3100                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
3101             /* wait 10 ms */
3102             SDL_LockMutex(wait_mutex);
3103             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3104             SDL_UnlockMutex(wait_mutex);
3105             continue;
3106         }
3107         if (!is->paused &&
3108             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3109             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3110             if (loop != 1 && (!loop || --loop)) {
3111                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3112             } else if (autoexit) {
3113                 ret = AVERROR_EOF;
3114                 goto fail;
3115             }
3116         }
3117         ret = av_read_frame(ic, pkt);
3118         if (ret < 0) {
3119             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3120                 if (is->video_stream >= 0)
3121                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3122                 if (is->audio_stream >= 0)
3123                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3124                 if (is->subtitle_stream >= 0)
3125                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3126                 is->eof = 1;
3127             }
3128             if (ic->pb && ic->pb->error)
3129                 break;
3130             SDL_LockMutex(wait_mutex);
3131             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3132             SDL_UnlockMutex(wait_mutex);
3133             continue;
3134         } else {
3135             is->eof = 0;
3136         }
3137         /* check if packet is in play range specified by user, then queue, otherwise discard */
3138         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3139         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3140         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3141                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3142                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3143                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3144                 <= ((double)duration / 1000000);
3145         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3146             packet_queue_put(&is->audioq, pkt);
3147         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3148                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3149             packet_queue_put(&is->videoq, pkt);
3150         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3151             packet_queue_put(&is->subtitleq, pkt);
3152         } else {
3153             av_free_packet(pkt);
3154         }
3155     }
3156     /* wait until the end */
3157     while (!is->abort_request) {
3158         SDL_Delay(100);
3159     }
3160
3161     ret = 0;
3162  fail:
3163     /* close each stream */
3164     if (is->audio_stream >= 0)
3165         stream_component_close(is, is->audio_stream);
3166     if (is->video_stream >= 0)
3167         stream_component_close(is, is->video_stream);
3168     if (is->subtitle_stream >= 0)
3169         stream_component_close(is, is->subtitle_stream);
3170     if (ic) {
3171         avformat_close_input(&ic);
3172         is->ic = NULL;
3173     }
3174
3175     if (ret != 0) {
3176         SDL_Event event;
3177
3178         event.type = FF_QUIT_EVENT;
3179         event.user.data1 = is;
3180         SDL_PushEvent(&event);
3181     }
3182     SDL_DestroyMutex(wait_mutex);
3183     return 0;
3184 }
3185
3186 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3187 {
3188     VideoState *is;
3189
3190     is = av_mallocz(sizeof(VideoState));
3191     if (!is)
3192         return NULL;
3193     av_strlcpy(is->filename, filename, sizeof(is->filename));
3194     is->iformat = iformat;
3195     is->ytop    = 0;
3196     is->xleft   = 0;
3197
3198     /* start video display */
3199     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3200         goto fail;
3201     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3202         goto fail;
3203     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3204         goto fail;
3205
3206     packet_queue_init(&is->videoq);
3207     packet_queue_init(&is->audioq);
3208     packet_queue_init(&is->subtitleq);
3209
3210     is->continue_read_thread = SDL_CreateCond();
3211
3212     init_clock(&is->vidclk, &is->videoq.serial);
3213     init_clock(&is->audclk, &is->audioq.serial);
3214     init_clock(&is->extclk, &is->extclk.serial);
3215     is->audio_clock_serial = -1;
3216     is->av_sync_type = av_sync_type;
3217     is->read_tid     = SDL_CreateThread(read_thread, is);
3218     if (!is->read_tid) {
3219 fail:
3220         stream_close(is);
3221         return NULL;
3222     }
3223     return is;
3224 }
3225
3226 static void stream_cycle_channel(VideoState *is, int codec_type)
3227 {
3228     AVFormatContext *ic = is->ic;
3229     int start_index, stream_index;
3230     int old_index;
3231     AVStream *st;
3232     AVProgram *p = NULL;
3233     int nb_streams = is->ic->nb_streams;
3234
3235     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3236         start_index = is->last_video_stream;
3237         old_index = is->video_stream;
3238     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3239         start_index = is->last_audio_stream;
3240         old_index = is->audio_stream;
3241     } else {
3242         start_index = is->last_subtitle_stream;
3243         old_index = is->subtitle_stream;
3244     }
3245     stream_index = start_index;
3246
3247     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3248         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3249         if (p) {
3250             nb_streams = p->nb_stream_indexes;
3251             for (start_index = 0; start_index < nb_streams; start_index++)
3252                 if (p->stream_index[start_index] == stream_index)
3253                     break;
3254             if (start_index == nb_streams)
3255                 start_index = -1;
3256             stream_index = start_index;
3257         }
3258     }
3259
3260     for (;;) {
3261         if (++stream_index >= nb_streams)
3262         {
3263             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3264             {
3265                 stream_index = -1;
3266                 is->last_subtitle_stream = -1;
3267                 goto the_end;
3268             }
3269             if (start_index == -1)
3270                 return;
3271             stream_index = 0;
3272         }
3273         if (stream_index == start_index)
3274             return;
3275         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3276         if (st->codec->codec_type == codec_type) {
3277             /* check that parameters are OK */
3278             switch (codec_type) {
3279             case AVMEDIA_TYPE_AUDIO:
3280                 if (st->codec->sample_rate != 0 &&
3281                     st->codec->channels != 0)
3282                     goto the_end;
3283                 break;
3284             case AVMEDIA_TYPE_VIDEO:
3285             case AVMEDIA_TYPE_SUBTITLE:
3286                 goto the_end;
3287             default:
3288                 break;
3289             }
3290         }
3291     }
3292  the_end:
3293     if (p && stream_index != -1)
3294         stream_index = p->stream_index[stream_index];
3295     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3296            av_get_media_type_string(codec_type),
3297            old_index,
3298            stream_index);
3299
3300     stream_component_close(is, old_index);
3301     stream_component_open(is, stream_index);
3302 }
3303
3304
3305 static void toggle_full_screen(VideoState *is)
3306 {
3307 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3308     /* OS X needs to reallocate the SDL overlays */
3309     int i;
3310     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3311         is->pictq.queue[i].reallocate = 1;
3312 #endif
3313     is_full_screen = !is_full_screen;
3314     video_open(is, 1, NULL);
3315 }
3316
3317 static void toggle_audio_display(VideoState *is)
3318 {
3319     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3320     int next = is->show_mode;
3321     do {
3322         next = (next + 1) % SHOW_MODE_NB;
3323     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3324     if (is->show_mode != next) {
3325         fill_rectangle(screen,
3326                     is->xleft, is->ytop, is->width, is->height,
3327                     bgcolor, 1);
3328         is->force_refresh = 1;
3329         is->show_mode = next;
3330     }
3331 }
3332
3333 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3334     double remaining_time = 0.0;
3335     SDL_PumpEvents();
3336     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3337         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3338             SDL_ShowCursor(0);
3339             cursor_hidden = 1;
3340         }
3341         if (remaining_time > 0.0)
3342             av_usleep((int64_t)(remaining_time * 1000000.0));
3343         remaining_time = REFRESH_RATE;
3344         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3345             video_refresh(is, &remaining_time);
3346         SDL_PumpEvents();
3347     }
3348 }
3349
3350 static void seek_chapter(VideoState *is, int incr)
3351 {
3352     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3353     int i;
3354
3355     if (!is->ic->nb_chapters)
3356         return;
3357
3358     /* find the current chapter */
3359     for (i = 0; i < is->ic->nb_chapters; i++) {
3360         AVChapter *ch = is->ic->chapters[i];
3361         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3362             i--;
3363             break;
3364         }
3365     }
3366
3367     i += incr;
3368     i = FFMAX(i, 0);
3369     if (i >= is->ic->nb_chapters)
3370         return;
3371
3372     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3373     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3374                                  AV_TIME_BASE_Q), 0, 0);
3375 }
3376
3377 /* handle an event sent by the GUI */
3378 static void event_loop(VideoState *cur_stream)
3379 {
3380     SDL_Event event;
3381     double incr, pos, frac;
3382
3383     for (;;) {
3384         double x;
3385         refresh_loop_wait_event(cur_stream, &event);
3386         switch (event.type) {
3387         case SDL_KEYDOWN:
3388             if (exit_on_keydown) {
3389                 do_exit(cur_stream);
3390                 break;
3391             }
3392             switch (event.key.keysym.sym) {
3393             case SDLK_ESCAPE:
3394             case SDLK_q:
3395                 do_exit(cur_stream);
3396                 break;
3397             case SDLK_f:
3398                 toggle_full_screen(cur_stream);
3399                 cur_stream->force_refresh = 1;
3400                 break;
3401             case SDLK_p:
3402             case SDLK_SPACE:
3403                 toggle_pause(cur_stream);
3404                 break;
3405             case SDLK_s: // S: Step to next frame
3406                 step_to_next_frame(cur_stream);
3407                 break;
3408             case SDLK_a:
3409                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3410                 break;
3411             case SDLK_v:
3412                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3413                 break;
3414             case SDLK_c:
3415                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3416                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3417                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3418                 break;
3419             case SDLK_t:
3420                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3421                 break;
3422             case SDLK_w:
3423 #if CONFIG_AVFILTER
3424                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3425                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3426                         cur_stream->vfilter_idx = 0;
3427                 } else {
3428                     cur_stream->vfilter_idx = 0;
3429                     toggle_audio_display(cur_stream);
3430                 }
3431 #else
3432                 toggle_audio_display(cur_stream);
3433 #endif
3434                 break;
3435             case SDLK_PAGEUP:
3436                 if (cur_stream->ic->nb_chapters <= 1) {
3437                     incr = 600.0;
3438                     goto do_seek;
3439                 }
3440                 seek_chapter(cur_stream, 1);
3441                 break;
3442             case SDLK_PAGEDOWN:
3443                 if (cur_stream->ic->nb_chapters <= 1) {
3444                     incr = -600.0;
3445                     goto do_seek;
3446                 }
3447                 seek_chapter(cur_stream, -1);
3448                 break;
3449             case SDLK_LEFT:
3450                 incr = -10.0;
3451                 goto do_seek;
3452             case SDLK_RIGHT:
3453                 incr = 10.0;
3454                 goto do_seek;
3455             case SDLK_UP:
3456                 incr = 60.0;
3457                 goto do_seek;
3458             case SDLK_DOWN:
3459                 incr = -60.0;
3460             do_seek:
3461                     if (seek_by_bytes) {
3462                         pos = -1;
3463                         if (pos < 0 && cur_stream->video_stream >= 0)
3464                             pos = frame_queue_last_pos(&cur_stream->pictq);
3465                         if (pos < 0 && cur_stream->audio_stream >= 0)
3466                             pos = frame_queue_last_pos(&cur_stream->sampq);
3467                         if (pos < 0)
3468                             pos = avio_tell(cur_stream->ic->pb);
3469                         if (cur_stream->ic->bit_rate)
3470                             incr *= cur_stream->ic->bit_rate / 8.0;
3471                         else
3472                             incr *= 180000.0;
3473                         pos += incr;
3474                         stream_seek(cur_stream, pos, incr, 1);
3475                     } else {
3476                         pos = get_master_clock(cur_stream);
3477                         if (isnan(pos))
3478                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3479                         pos += incr;
3480                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3481                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3482                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3483                     }
3484                 break;
3485             default:
3486                 break;
3487             }
3488             break;
3489         case SDL_VIDEOEXPOSE:
3490             cur_stream->force_refresh = 1;
3491             break;
3492         case SDL_MOUSEBUTTONDOWN:
3493             if (exit_on_mousedown) {
3494                 do_exit(cur_stream);
3495                 break;
3496             }
3497         case SDL_MOUSEMOTION:
3498             if (cursor_hidden) {
3499                 SDL_ShowCursor(1);
3500                 cursor_hidden = 0;
3501             }
3502             cursor_last_shown = av_gettime_relative();
3503             if (event.type == SDL_MOUSEBUTTONDOWN) {
3504                 x = event.button.x;
3505             } else {
3506                 if (event.motion.state != SDL_PRESSED)
3507                     break;
3508                 x = event.motion.x;
3509             }
3510                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3511                     uint64_t size =  avio_size(cur_stream->ic->pb);
3512                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3513                 } else {
3514                     int64_t ts;
3515                     int ns, hh, mm, ss;
3516                     int tns, thh, tmm, tss;
3517                     tns  = cur_stream->ic->duration / 1000000LL;
3518                     thh  = tns / 3600;
3519                     tmm  = (tns % 3600) / 60;
3520                     tss  = (tns % 60);
3521                     frac = x / cur_stream->width;
3522                     ns   = frac * tns;
3523                     hh   = ns / 3600;
3524                     mm   = (ns % 3600) / 60;
3525                     ss   = (ns % 60);
3526                     av_log(NULL, AV_LOG_INFO,
3527                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3528                             hh, mm, ss, thh, tmm, tss);
3529                     ts = frac * cur_stream->ic->duration;
3530                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3531                         ts += cur_stream->ic->start_time;
3532                     stream_seek(cur_stream, ts, 0, 0);
3533                 }
3534             break;
3535         case SDL_VIDEORESIZE:
3536                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3537                                           SDL_HWSURFACE|(is_full_screen?SDL_FULLSCREEN:SDL_RESIZABLE)|SDL_ASYNCBLIT|SDL_HWACCEL);
3538                 if (!screen) {
3539                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3540                     do_exit(cur_stream);
3541                 }
3542                 screen_width  = cur_stream->width  = screen->w;
3543                 screen_height = cur_stream->height = screen->h;
3544                 cur_stream->force_refresh = 1;
3545             break;
3546         case SDL_QUIT:
3547         case FF_QUIT_EVENT:
3548             do_exit(cur_stream);
3549             break;
3550         case FF_ALLOC_EVENT:
3551             alloc_picture(event.user.data1);
3552             break;
3553         default:
3554             break;
3555         }
3556     }
3557 }
3558
3559 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3560 {
3561     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3562     return opt_default(NULL, "video_size", arg);
3563 }
3564
3565 static int opt_width(void *optctx, const char *opt, const char *arg)
3566 {
3567     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3568     return 0;
3569 }
3570
3571 static int opt_height(void *optctx, const char *opt, const char *arg)
3572 {
3573     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3574     return 0;
3575 }
3576
3577 static int opt_format(void *optctx, const char *opt, const char *arg)
3578 {
3579     file_iformat = av_find_input_format(arg);
3580     if (!file_iformat) {
3581         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3582         return AVERROR(EINVAL);
3583     }
3584     return 0;
3585 }
3586
3587 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3588 {
3589     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3590     return opt_default(NULL, "pixel_format", arg);
3591 }
3592
3593 static int opt_sync(void *optctx, const char *opt, const char *arg)
3594 {
3595     if (!strcmp(arg, "audio"))
3596         av_sync_type = AV_SYNC_AUDIO_MASTER;
3597     else if (!strcmp(arg, "video"))
3598         av_sync_type = AV_SYNC_VIDEO_MASTER;
3599     else if (!strcmp(arg, "ext"))
3600         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3601     else {
3602         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3603         exit(1);
3604     }
3605     return 0;
3606 }
3607
3608 static int opt_seek(void *optctx, const char *opt, const char *arg)
3609 {
3610     start_time = parse_time_or_die(opt, arg, 1);
3611     return 0;
3612 }
3613
3614 static int opt_duration(void *optctx, const char *opt, const char *arg)
3615 {
3616     duration = parse_time_or_die(opt, arg, 1);
3617     return 0;
3618 }
3619
3620 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3621 {
3622     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3623                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3624                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3625                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3626     return 0;
3627 }
3628
3629 static void opt_input_file(void *optctx, const char *filename)
3630 {
3631     if (input_filename) {
3632         av_log(NULL, AV_LOG_FATAL,
3633                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3634                 filename, input_filename);
3635         exit(1);
3636     }
3637     if (!strcmp(filename, "-"))
3638         filename = "pipe:";
3639     input_filename = filename;
3640 }
3641
3642 static int opt_codec(void *optctx, const char *opt, const char *arg)
3643 {
3644    const char *spec = strchr(opt, ':');
3645    if (!spec) {
3646        av_log(NULL, AV_LOG_ERROR,
3647               "No media specifier was specified in '%s' in option '%s'\n",
3648                arg, opt);
3649        return AVERROR(EINVAL);
3650    }
3651    spec++;
3652    switch (spec[0]) {
3653    case 'a' :    audio_codec_name = arg; break;
3654    case 's' : subtitle_codec_name = arg; break;
3655    case 'v' :    video_codec_name = arg; break;
3656    default:
3657        av_log(NULL, AV_LOG_ERROR,
3658               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3659        return AVERROR(EINVAL);
3660    }
3661    return 0;
3662 }
3663
3664 static int dummy;
3665
3666 static const OptionDef options[] = {
3667 #include "cmdutils_common_opts.h"
3668     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3669     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3670     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3671     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3672     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3673     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3674     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3675     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3676     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3677     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3678     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3679     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3680     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3681     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3682     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3683     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3684     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3685     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3686     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3687     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3688     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3689     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3690     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3691     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3692     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3693     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3694     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3695     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3696     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3697 #if CONFIG_AVFILTER
3698     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3699     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3700 #endif
3701     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3702     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3703     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3704     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3705     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3706     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3707     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3708     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3709     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3710     { NULL, },
3711 };
3712
3713 static void show_usage(void)
3714 {
3715     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3716     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3717     av_log(NULL, AV_LOG_INFO, "\n");
3718 }
3719
3720 void show_help_default(const char *opt, const char *arg)
3721 {
3722     av_log_set_callback(log_callback_help);
3723     show_usage();
3724     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3725     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3726     printf("\n");
3727     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3728     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3729 #if !CONFIG_AVFILTER
3730     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3731 #else
3732     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3733 #endif
3734     printf("\nWhile playing:\n"
3735            "q, ESC              quit\n"