avcodec/nvenc: Need a separate class for each encoder
[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         if (!s->rdft || !s->rdft_data){
1251             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1252             s->show_mode = SHOW_MODE_WAVES;
1253         } else {
1254             FFTSample *data[2];
1255             for (ch = 0; ch < nb_display_channels; ch++) {
1256                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1257                 i = i_start + ch;
1258                 for (x = 0; x < 2 * nb_freq; x++) {
1259                     double w = (x-nb_freq) * (1.0 / nb_freq);
1260                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1261                     i += channels;
1262                     if (i >= SAMPLE_ARRAY_SIZE)
1263                         i -= SAMPLE_ARRAY_SIZE;
1264                 }
1265                 av_rdft_calc(s->rdft, data[ch]);
1266             }
1267             /* Least efficient way to do this, we should of course
1268              * directly access it but it is more than fast enough. */
1269             for (y = 0; y < s->height; y++) {
1270                 double w = 1 / sqrt(nb_freq);
1271                 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]));
1272                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1273                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1274                 a = FFMIN(a, 255);
1275                 b = FFMIN(b, 255);
1276                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1277
1278                 fill_rectangle(screen,
1279                             s->xpos, s->height-y, 1, 1,
1280                             fgcolor, 0);
1281             }
1282         }
1283         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1284         if (!s->paused)
1285             s->xpos++;
1286         if (s->xpos >= s->width)
1287             s->xpos= s->xleft;
1288     }
1289 }
1290
1291 static void stream_close(VideoState *is)
1292 {
1293     /* XXX: use a special url_shutdown call to abort parse cleanly */
1294     is->abort_request = 1;
1295     SDL_WaitThread(is->read_tid, NULL);
1296     packet_queue_destroy(&is->videoq);
1297     packet_queue_destroy(&is->audioq);
1298     packet_queue_destroy(&is->subtitleq);
1299
1300     /* free all pictures */
1301     frame_queue_destory(&is->pictq);
1302     frame_queue_destory(&is->sampq);
1303     frame_queue_destory(&is->subpq);
1304     SDL_DestroyCond(is->continue_read_thread);
1305 #if !CONFIG_AVFILTER
1306     sws_freeContext(is->img_convert_ctx);
1307 #endif
1308     av_free(is);
1309 }
1310
1311 static void do_exit(VideoState *is)
1312 {
1313     if (is) {
1314         stream_close(is);
1315     }
1316     av_lockmgr_register(NULL);
1317     uninit_opts();
1318 #if CONFIG_AVFILTER
1319     av_freep(&vfilters_list);
1320 #endif
1321     avformat_network_deinit();
1322     if (show_status)
1323         printf("\n");
1324     SDL_Quit();
1325     av_log(NULL, AV_LOG_QUIET, "%s", "");
1326     exit(0);
1327 }
1328
1329 static void sigterm_handler(int sig)
1330 {
1331     exit(123);
1332 }
1333
1334 static void set_default_window_size(int width, int height, AVRational sar)
1335 {
1336     SDL_Rect rect;
1337     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1338     default_width  = rect.w;
1339     default_height = rect.h;
1340 }
1341
1342 static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
1343 {
1344     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1345     int w,h;
1346
1347     if (is_full_screen) flags |= SDL_FULLSCREEN;
1348     else                flags |= SDL_RESIZABLE;
1349
1350     if (vp && vp->width)
1351         set_default_window_size(vp->width, vp->height, vp->sar);
1352
1353     if (is_full_screen && fs_screen_width) {
1354         w = fs_screen_width;
1355         h = fs_screen_height;
1356     } else if (!is_full_screen && screen_width) {
1357         w = screen_width;
1358         h = screen_height;
1359     } else {
1360         w = default_width;
1361         h = default_height;
1362     }
1363     w = FFMIN(16383, w);
1364     if (screen && is->width == screen->w && screen->w == w
1365        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1366         return 0;
1367     screen = SDL_SetVideoMode(w, h, 0, flags);
1368     if (!screen) {
1369         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1370         do_exit(is);
1371     }
1372     if (!window_title)
1373         window_title = input_filename;
1374     SDL_WM_SetCaption(window_title, window_title);
1375
1376     is->width  = screen->w;
1377     is->height = screen->h;
1378
1379     return 0;
1380 }
1381
1382 /* display the current picture, if any */
1383 static void video_display(VideoState *is)
1384 {
1385     if (!screen)
1386         video_open(is, 0, NULL);
1387     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1388         video_audio_display(is);
1389     else if (is->video_st)
1390         video_image_display(is);
1391 }
1392
1393 static double get_clock(Clock *c)
1394 {
1395     if (*c->queue_serial != c->serial)
1396         return NAN;
1397     if (c->paused) {
1398         return c->pts;
1399     } else {
1400         double time = av_gettime_relative() / 1000000.0;
1401         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1402     }
1403 }
1404
1405 static void set_clock_at(Clock *c, double pts, int serial, double time)
1406 {
1407     c->pts = pts;
1408     c->last_updated = time;
1409     c->pts_drift = c->pts - time;
1410     c->serial = serial;
1411 }
1412
1413 static void set_clock(Clock *c, double pts, int serial)
1414 {
1415     double time = av_gettime_relative() / 1000000.0;
1416     set_clock_at(c, pts, serial, time);
1417 }
1418
1419 static void set_clock_speed(Clock *c, double speed)
1420 {
1421     set_clock(c, get_clock(c), c->serial);
1422     c->speed = speed;
1423 }
1424
1425 static void init_clock(Clock *c, int *queue_serial)
1426 {
1427     c->speed = 1.0;
1428     c->paused = 0;
1429     c->queue_serial = queue_serial;
1430     set_clock(c, NAN, -1);
1431 }
1432
1433 static void sync_clock_to_slave(Clock *c, Clock *slave)
1434 {
1435     double clock = get_clock(c);
1436     double slave_clock = get_clock(slave);
1437     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1438         set_clock(c, slave_clock, slave->serial);
1439 }
1440
1441 static int get_master_sync_type(VideoState *is) {
1442     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1443         if (is->video_st)
1444             return AV_SYNC_VIDEO_MASTER;
1445         else
1446             return AV_SYNC_AUDIO_MASTER;
1447     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1448         if (is->audio_st)
1449             return AV_SYNC_AUDIO_MASTER;
1450         else
1451             return AV_SYNC_EXTERNAL_CLOCK;
1452     } else {
1453         return AV_SYNC_EXTERNAL_CLOCK;
1454     }
1455 }
1456
1457 /* get the current master clock value */
1458 static double get_master_clock(VideoState *is)
1459 {
1460     double val;
1461
1462     switch (get_master_sync_type(is)) {
1463         case AV_SYNC_VIDEO_MASTER:
1464             val = get_clock(&is->vidclk);
1465             break;
1466         case AV_SYNC_AUDIO_MASTER:
1467             val = get_clock(&is->audclk);
1468             break;
1469         default:
1470             val = get_clock(&is->extclk);
1471             break;
1472     }
1473     return val;
1474 }
1475
1476 static void check_external_clock_speed(VideoState *is) {
1477    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, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1480    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1481               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1482        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1483    } else {
1484        double speed = is->extclk.speed;
1485        if (speed != 1.0)
1486            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1487    }
1488 }
1489
1490 /* seek in the stream */
1491 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1492 {
1493     if (!is->seek_req) {
1494         is->seek_pos = pos;
1495         is->seek_rel = rel;
1496         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1497         if (seek_by_bytes)
1498             is->seek_flags |= AVSEEK_FLAG_BYTE;
1499         is->seek_req = 1;
1500         SDL_CondSignal(is->continue_read_thread);
1501     }
1502 }
1503
1504 /* pause or resume the video */
1505 static void stream_toggle_pause(VideoState *is)
1506 {
1507     if (is->paused) {
1508         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1509         if (is->read_pause_return != AVERROR(ENOSYS)) {
1510             is->vidclk.paused = 0;
1511         }
1512         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1513     }
1514     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1515     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1516 }
1517
1518 static void toggle_pause(VideoState *is)
1519 {
1520     stream_toggle_pause(is);
1521     is->step = 0;
1522 }
1523
1524 static void step_to_next_frame(VideoState *is)
1525 {
1526     /* if the stream is paused unpause it, then step */
1527     if (is->paused)
1528         stream_toggle_pause(is);
1529     is->step = 1;
1530 }
1531
1532 static double compute_target_delay(double delay, VideoState *is)
1533 {
1534     double sync_threshold, diff;
1535
1536     /* update delay to follow master synchronisation source */
1537     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1538         /* if video is slave, we try to correct big delays by
1539            duplicating or deleting a frame */
1540         diff = get_clock(&is->vidclk) - get_master_clock(is);
1541
1542         /* skip or repeat frame. We take into account the
1543            delay to compute the threshold. I still don't know
1544            if it is the best guess */
1545         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1546         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1547             if (diff <= -sync_threshold)
1548                 delay = FFMAX(0, delay + diff);
1549             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1550                 delay = delay + diff;
1551             else if (diff >= sync_threshold)
1552                 delay = 2 * delay;
1553         }
1554     }
1555
1556     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1557             delay, -diff);
1558
1559     return delay;
1560 }
1561
1562 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1563     if (vp->serial == nextvp->serial) {
1564         double duration = nextvp->pts - vp->pts;
1565         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1566             return vp->duration;
1567         else
1568             return duration;
1569     } else {
1570         return 0.0;
1571     }
1572 }
1573
1574 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1575     /* update current video pts */
1576     set_clock(&is->vidclk, pts, serial);
1577     sync_clock_to_slave(&is->extclk, &is->vidclk);
1578 }
1579
1580 /* called to display each frame */
1581 static void video_refresh(void *opaque, double *remaining_time)
1582 {
1583     VideoState *is = opaque;
1584     double time;
1585
1586     Frame *sp, *sp2;
1587
1588     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1589         check_external_clock_speed(is);
1590
1591     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1592         time = av_gettime_relative() / 1000000.0;
1593         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1594             video_display(is);
1595             is->last_vis_time = time;
1596         }
1597         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1598     }
1599
1600     if (is->video_st) {
1601         int redisplay = 0;
1602         if (is->force_refresh)
1603             redisplay = frame_queue_prev(&is->pictq);
1604 retry:
1605         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1606             // nothing to do, no picture to display in the queue
1607         } else {
1608             double last_duration, duration, delay;
1609             Frame *vp, *lastvp;
1610
1611             /* dequeue the picture */
1612             lastvp = frame_queue_peek_last(&is->pictq);
1613             vp = frame_queue_peek(&is->pictq);
1614
1615             if (vp->serial != is->videoq.serial) {
1616                 frame_queue_next(&is->pictq);
1617                 redisplay = 0;
1618                 goto retry;
1619             }
1620
1621             if (lastvp->serial != vp->serial && !redisplay)
1622                 is->frame_timer = av_gettime_relative() / 1000000.0;
1623
1624             if (is->paused)
1625                 goto display;
1626
1627             /* compute nominal last_duration */
1628             last_duration = vp_duration(is, lastvp, vp);
1629             if (redisplay)
1630                 delay = 0.0;
1631             else
1632                 delay = compute_target_delay(last_duration, is);
1633
1634             time= av_gettime_relative()/1000000.0;
1635             if (time < is->frame_timer + delay && !redisplay) {
1636                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1637                 return;
1638             }
1639
1640             is->frame_timer += delay;
1641             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1642                 is->frame_timer = time;
1643
1644             SDL_LockMutex(is->pictq.mutex);
1645             if (!redisplay && !isnan(vp->pts))
1646                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1647             SDL_UnlockMutex(is->pictq.mutex);
1648
1649             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1650                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1651                 duration = vp_duration(is, vp, nextvp);
1652                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1653                     if (!redisplay)
1654                         is->frame_drops_late++;
1655                     frame_queue_next(&is->pictq);
1656                     redisplay = 0;
1657                     goto retry;
1658                 }
1659             }
1660
1661             if (is->subtitle_st) {
1662                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1663                         sp = frame_queue_peek(&is->subpq);
1664
1665                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1666                             sp2 = frame_queue_peek_next(&is->subpq);
1667                         else
1668                             sp2 = NULL;
1669
1670                         if (sp->serial != is->subtitleq.serial
1671                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1672                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1673                         {
1674                             frame_queue_next(&is->subpq);
1675                         } else {
1676                             break;
1677                         }
1678                     }
1679             }
1680
1681 display:
1682             /* display picture */
1683             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1684                 video_display(is);
1685
1686             frame_queue_next(&is->pictq);
1687
1688             if (is->step && !is->paused)
1689                 stream_toggle_pause(is);
1690         }
1691     }
1692     is->force_refresh = 0;
1693     if (show_status) {
1694         static int64_t last_time;
1695         int64_t cur_time;
1696         int aqsize, vqsize, sqsize;
1697         double av_diff;
1698
1699         cur_time = av_gettime_relative();
1700         if (!last_time || (cur_time - last_time) >= 30000) {
1701             aqsize = 0;
1702             vqsize = 0;
1703             sqsize = 0;
1704             if (is->audio_st)
1705                 aqsize = is->audioq.size;
1706             if (is->video_st)
1707                 vqsize = is->videoq.size;
1708             if (is->subtitle_st)
1709                 sqsize = is->subtitleq.size;
1710             av_diff = 0;
1711             if (is->audio_st && is->video_st)
1712                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1713             else if (is->video_st)
1714                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1715             else if (is->audio_st)
1716                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1717             av_log(NULL, AV_LOG_INFO,
1718                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1719                    get_master_clock(is),
1720                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1721                    av_diff,
1722                    is->frame_drops_early + is->frame_drops_late,
1723                    aqsize / 1024,
1724                    vqsize / 1024,
1725                    sqsize,
1726                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1727                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1728             fflush(stdout);
1729             last_time = cur_time;
1730         }
1731     }
1732 }
1733
1734 /* allocate a picture (needs to do that in main thread to avoid
1735    potential locking problems */
1736 static void alloc_picture(VideoState *is)
1737 {
1738     Frame *vp;
1739     int64_t bufferdiff;
1740
1741     vp = &is->pictq.queue[is->pictq.windex];
1742
1743     free_picture(vp);
1744
1745     video_open(is, 0, vp);
1746
1747     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1748                                    SDL_YV12_OVERLAY,
1749                                    screen);
1750     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1751     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1752         /* SDL allocates a buffer smaller than requested if the video
1753          * overlay hardware is unable to support the requested size. */
1754         av_log(NULL, AV_LOG_FATAL,
1755                "Error: the video system does not support an image\n"
1756                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1757                         "to reduce the image size.\n", vp->width, vp->height );
1758         do_exit(is);
1759     }
1760
1761     SDL_LockMutex(is->pictq.mutex);
1762     vp->allocated = 1;
1763     SDL_CondSignal(is->pictq.cond);
1764     SDL_UnlockMutex(is->pictq.mutex);
1765 }
1766
1767 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1768     int i, width, height;
1769     Uint8 *p, *maxp;
1770     for (i = 0; i < 3; i++) {
1771         width  = bmp->w;
1772         height = bmp->h;
1773         if (i > 0) {
1774             width  >>= 1;
1775             height >>= 1;
1776         }
1777         if (bmp->pitches[i] > width) {
1778             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1779             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1780                 *(p+1) = *p;
1781         }
1782     }
1783 }
1784
1785 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1786 {
1787     Frame *vp;
1788
1789 #if defined(DEBUG_SYNC) && 0
1790     printf("frame_type=%c pts=%0.3f\n",
1791            av_get_picture_type_char(src_frame->pict_type), pts);
1792 #endif
1793
1794     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1795         return -1;
1796
1797     vp->sar = src_frame->sample_aspect_ratio;
1798
1799     /* alloc or resize hardware picture buffer */
1800     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1801         vp->width  != src_frame->width ||
1802         vp->height != src_frame->height) {
1803         SDL_Event event;
1804
1805         vp->allocated  = 0;
1806         vp->reallocate = 0;
1807         vp->width = src_frame->width;
1808         vp->height = src_frame->height;
1809
1810         /* the allocation must be done in the main thread to avoid
1811            locking problems. */
1812         event.type = FF_ALLOC_EVENT;
1813         event.user.data1 = is;
1814         SDL_PushEvent(&event);
1815
1816         /* wait until the picture is allocated */
1817         SDL_LockMutex(is->pictq.mutex);
1818         while (!vp->allocated && !is->videoq.abort_request) {
1819             SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1820         }
1821         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1822         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1823             while (!vp->allocated && !is->abort_request) {
1824                 SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1825             }
1826         }
1827         SDL_UnlockMutex(is->pictq.mutex);
1828
1829         if (is->videoq.abort_request)
1830             return -1;
1831     }
1832
1833     /* if the frame is not skipped, then display it */
1834     if (vp->bmp) {
1835         AVPicture pict = { { 0 } };
1836
1837         /* get a pointer on the bitmap */
1838         SDL_LockYUVOverlay (vp->bmp);
1839
1840         pict.data[0] = vp->bmp->pixels[0];
1841         pict.data[1] = vp->bmp->pixels[2];
1842         pict.data[2] = vp->bmp->pixels[1];
1843
1844         pict.linesize[0] = vp->bmp->pitches[0];
1845         pict.linesize[1] = vp->bmp->pitches[2];
1846         pict.linesize[2] = vp->bmp->pitches[1];
1847
1848 #if CONFIG_AVFILTER
1849         // FIXME use direct rendering
1850         av_picture_copy(&pict, (AVPicture *)src_frame,
1851                         src_frame->format, vp->width, vp->height);
1852 #else
1853         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1854         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1855             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1856             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1857         if (!is->img_convert_ctx) {
1858             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1859             exit(1);
1860         }
1861         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1862                   0, vp->height, pict.data, pict.linesize);
1863 #endif
1864         /* workaround SDL PITCH_WORKAROUND */
1865         duplicate_right_border_pixels(vp->bmp);
1866         /* update the bitmap content */
1867         SDL_UnlockYUVOverlay(vp->bmp);
1868
1869         vp->pts = pts;
1870         vp->duration = duration;
1871         vp->pos = pos;
1872         vp->serial = serial;
1873
1874         /* now we can update the picture count */
1875         frame_queue_push(&is->pictq);
1876     }
1877     return 0;
1878 }
1879
1880 static int get_video_frame(VideoState *is, AVFrame *frame)
1881 {
1882     int got_picture;
1883
1884     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1885         return -1;
1886
1887     if (got_picture) {
1888         double dpts = NAN;
1889
1890         if (frame->pts != AV_NOPTS_VALUE)
1891             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1892
1893         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1894
1895         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1896             if (frame->pts != AV_NOPTS_VALUE) {
1897                 double diff = dpts - get_master_clock(is);
1898                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1899                     diff - is->frame_last_filter_delay < 0 &&
1900                     is->viddec.pkt_serial == is->vidclk.serial &&
1901                     is->videoq.nb_packets) {
1902                     is->frame_drops_early++;
1903                     av_frame_unref(frame);
1904                     got_picture = 0;
1905                 }
1906             }
1907         }
1908     }
1909
1910     return got_picture;
1911 }
1912
1913 #if CONFIG_AVFILTER
1914 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1915                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1916 {
1917     int ret, i;
1918     int nb_filters = graph->nb_filters;
1919     AVFilterInOut *outputs = NULL, *inputs = NULL;
1920
1921     if (filtergraph) {
1922         outputs = avfilter_inout_alloc();
1923         inputs  = avfilter_inout_alloc();
1924         if (!outputs || !inputs) {
1925             ret = AVERROR(ENOMEM);
1926             goto fail;
1927         }
1928
1929         outputs->name       = av_strdup("in");
1930         outputs->filter_ctx = source_ctx;
1931         outputs->pad_idx    = 0;
1932         outputs->next       = NULL;
1933
1934         inputs->name        = av_strdup("out");
1935         inputs->filter_ctx  = sink_ctx;
1936         inputs->pad_idx     = 0;
1937         inputs->next        = NULL;
1938
1939         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1940             goto fail;
1941     } else {
1942         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1943             goto fail;
1944     }
1945
1946     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1947     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1948         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1949
1950     ret = avfilter_graph_config(graph, NULL);
1951 fail:
1952     avfilter_inout_free(&outputs);
1953     avfilter_inout_free(&inputs);
1954     return ret;
1955 }
1956
1957 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1958 {
1959     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1960     char sws_flags_str[128];
1961     char buffersrc_args[256];
1962     int ret;
1963     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1964     AVCodecContext *codec = is->video_st->codec;
1965     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1966
1967     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1968     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1969     graph->scale_sws_opts = av_strdup(sws_flags_str);
1970
1971     snprintf(buffersrc_args, sizeof(buffersrc_args),
1972              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1973              frame->width, frame->height, frame->format,
1974              is->video_st->time_base.num, is->video_st->time_base.den,
1975              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1976     if (fr.num && fr.den)
1977         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1978
1979     if ((ret = avfilter_graph_create_filter(&filt_src,
1980                                             avfilter_get_by_name("buffer"),
1981                                             "ffplay_buffer", buffersrc_args, NULL,
1982                                             graph)) < 0)
1983         goto fail;
1984
1985     ret = avfilter_graph_create_filter(&filt_out,
1986                                        avfilter_get_by_name("buffersink"),
1987                                        "ffplay_buffersink", NULL, NULL, graph);
1988     if (ret < 0)
1989         goto fail;
1990
1991     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1992         goto fail;
1993
1994     last_filter = filt_out;
1995
1996 /* Note: this macro adds a filter before the lastly added filter, so the
1997  * processing order of the filters is in reverse */
1998 #define INSERT_FILT(name, arg) do {                                         \
1999     AVFilterContext *filt_ctx;                                              \
2000                                                                             \
2001     ret = avfilter_graph_create_filter(&filt_ctx,                           \
2002                                        avfilter_get_by_name(name),          \
2003                                        "ffplay_" name, arg, NULL, graph);   \
2004     if (ret < 0)                                                            \
2005         goto fail;                                                          \
2006                                                                             \
2007     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                       \
2008     if (ret < 0)                                                            \
2009         goto fail;                                                          \
2010                                                                             \
2011     last_filter = filt_ctx;                                                 \
2012 } while (0)
2013
2014     /* SDL YUV code is not handling odd width/height for some driver
2015      * combinations, therefore we crop the picture to an even width/height. */
2016     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
2017
2018     if (autorotate) {
2019         AVDictionaryEntry *rotate_tag = av_dict_get(is->video_st->metadata, "rotate", NULL, 0);
2020         if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2021             if (!strcmp(rotate_tag->value, "90")) {
2022                 INSERT_FILT("transpose", "clock");
2023             } else if (!strcmp(rotate_tag->value, "180")) {
2024                 INSERT_FILT("hflip", NULL);
2025                 INSERT_FILT("vflip", NULL);
2026             } else if (!strcmp(rotate_tag->value, "270")) {
2027                 INSERT_FILT("transpose", "cclock");
2028             } else {
2029                 char rotate_buf[64];
2030                 snprintf(rotate_buf, sizeof(rotate_buf), "%s*PI/180", rotate_tag->value);
2031                 INSERT_FILT("rotate", rotate_buf);
2032             }
2033         }
2034     }
2035
2036     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
2037         goto fail;
2038
2039     is->in_video_filter  = filt_src;
2040     is->out_video_filter = filt_out;
2041
2042 fail:
2043     return ret;
2044 }
2045
2046 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
2047 {
2048     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
2049     int sample_rates[2] = { 0, -1 };
2050     int64_t channel_layouts[2] = { 0, -1 };
2051     int channels[2] = { 0, -1 };
2052     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
2053     char aresample_swr_opts[512] = "";
2054     AVDictionaryEntry *e = NULL;
2055     char asrc_args[256];
2056     int ret;
2057
2058     avfilter_graph_free(&is->agraph);
2059     if (!(is->agraph = avfilter_graph_alloc()))
2060         return AVERROR(ENOMEM);
2061
2062     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
2063         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
2064     if (strlen(aresample_swr_opts))
2065         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
2066     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
2067
2068     ret = snprintf(asrc_args, sizeof(asrc_args),
2069                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
2070                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
2071                    is->audio_filter_src.channels,
2072                    1, is->audio_filter_src.freq);
2073     if (is->audio_filter_src.channel_layout)
2074         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
2075                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
2076
2077     ret = avfilter_graph_create_filter(&filt_asrc,
2078                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
2079                                        asrc_args, NULL, is->agraph);
2080     if (ret < 0)
2081         goto end;
2082
2083
2084     ret = avfilter_graph_create_filter(&filt_asink,
2085                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2086                                        NULL, NULL, is->agraph);
2087     if (ret < 0)
2088         goto end;
2089
2090     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2091         goto end;
2092     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2093         goto end;
2094
2095     if (force_output_format) {
2096         channel_layouts[0] = is->audio_tgt.channel_layout;
2097         channels       [0] = is->audio_tgt.channels;
2098         sample_rates   [0] = is->audio_tgt.freq;
2099         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2100             goto end;
2101         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2102             goto end;
2103         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2104             goto end;
2105         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2106             goto end;
2107     }
2108
2109
2110     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2111         goto end;
2112
2113     is->in_audio_filter  = filt_asrc;
2114     is->out_audio_filter = filt_asink;
2115
2116 end:
2117     if (ret < 0)
2118         avfilter_graph_free(&is->agraph);
2119     return ret;
2120 }
2121 #endif  /* CONFIG_AVFILTER */
2122
2123 static int audio_thread(void *arg)
2124 {
2125     VideoState *is = arg;
2126     AVFrame *frame = av_frame_alloc();
2127     Frame *af;
2128 #if CONFIG_AVFILTER
2129     int last_serial = -1;
2130     int64_t dec_channel_layout;
2131     int reconfigure;
2132 #endif
2133     int got_frame = 0;
2134     AVRational tb;
2135     int ret = 0;
2136
2137     if (!frame)
2138         return AVERROR(ENOMEM);
2139
2140     do {
2141         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2142             goto the_end;
2143
2144         if (got_frame) {
2145                 tb = (AVRational){1, frame->sample_rate};
2146
2147 #if CONFIG_AVFILTER
2148                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, av_frame_get_channels(frame));
2149
2150                 reconfigure =
2151                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2152                                    frame->format, av_frame_get_channels(frame))    ||
2153                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2154                     is->audio_filter_src.freq           != frame->sample_rate ||
2155                     is->auddec.pkt_serial               != last_serial;
2156
2157                 if (reconfigure) {
2158                     char buf1[1024], buf2[1024];
2159                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2160                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2161                     av_log(NULL, AV_LOG_DEBUG,
2162                            "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",
2163                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2164                            frame->sample_rate, av_frame_get_channels(frame), av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2165
2166                     is->audio_filter_src.fmt            = frame->format;
2167                     is->audio_filter_src.channels       = av_frame_get_channels(frame);
2168                     is->audio_filter_src.channel_layout = dec_channel_layout;
2169                     is->audio_filter_src.freq           = frame->sample_rate;
2170                     last_serial                         = is->auddec.pkt_serial;
2171
2172                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2173                         goto the_end;
2174                 }
2175
2176             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2177                 goto the_end;
2178
2179             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2180                 tb = is->out_audio_filter->inputs[0]->time_base;
2181 #endif
2182                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2183                     goto the_end;
2184
2185                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2186                 af->pos = av_frame_get_pkt_pos(frame);
2187                 af->serial = is->auddec.pkt_serial;
2188                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2189
2190                 av_frame_move_ref(af->frame, frame);
2191                 frame_queue_push(&is->sampq);
2192
2193 #if CONFIG_AVFILTER
2194                 if (is->audioq.serial != is->auddec.pkt_serial)
2195                     break;
2196             }
2197             if (ret == AVERROR_EOF)
2198                 is->auddec.finished = is->auddec.pkt_serial;
2199 #endif
2200         }
2201     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2202  the_end:
2203 #if CONFIG_AVFILTER
2204     avfilter_graph_free(&is->agraph);
2205 #endif
2206     av_frame_free(&frame);
2207     return ret;
2208 }
2209
2210 static void decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2211 {
2212     packet_queue_start(d->queue);
2213     d->decoder_tid = SDL_CreateThread(fn, arg);
2214 }
2215
2216 static int video_thread(void *arg)
2217 {
2218     VideoState *is = arg;
2219     AVFrame *frame = av_frame_alloc();
2220     double pts;
2221     double duration;
2222     int ret;
2223     AVRational tb = is->video_st->time_base;
2224     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2225
2226 #if CONFIG_AVFILTER
2227     AVFilterGraph *graph = avfilter_graph_alloc();
2228     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2229     int last_w = 0;
2230     int last_h = 0;
2231     enum AVPixelFormat last_format = -2;
2232     int last_serial = -1;
2233     int last_vfilter_idx = 0;
2234     if (!graph)
2235         return AVERROR(ENOMEM);
2236
2237 #endif
2238
2239     if (!frame)
2240         return AVERROR(ENOMEM);
2241
2242     for (;;) {
2243         ret = get_video_frame(is, frame);
2244         if (ret < 0)
2245             goto the_end;
2246         if (!ret)
2247             continue;
2248
2249 #if CONFIG_AVFILTER
2250         if (   last_w != frame->width
2251             || last_h != frame->height
2252             || last_format != frame->format
2253             || last_serial != is->viddec.pkt_serial
2254             || last_vfilter_idx != is->vfilter_idx) {
2255             av_log(NULL, AV_LOG_DEBUG,
2256                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2257                    last_w, last_h,
2258                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2259                    frame->width, frame->height,
2260                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2261             avfilter_graph_free(&graph);
2262             graph = avfilter_graph_alloc();
2263             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2264                 SDL_Event event;
2265                 event.type = FF_QUIT_EVENT;
2266                 event.user.data1 = is;
2267                 SDL_PushEvent(&event);
2268                 goto the_end;
2269             }
2270             filt_in  = is->in_video_filter;
2271             filt_out = is->out_video_filter;
2272             last_w = frame->width;
2273             last_h = frame->height;
2274             last_format = frame->format;
2275             last_serial = is->viddec.pkt_serial;
2276             last_vfilter_idx = is->vfilter_idx;
2277             frame_rate = filt_out->inputs[0]->frame_rate;
2278         }
2279
2280         ret = av_buffersrc_add_frame(filt_in, frame);
2281         if (ret < 0)
2282             goto the_end;
2283
2284         while (ret >= 0) {
2285             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2286
2287             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2288             if (ret < 0) {
2289                 if (ret == AVERROR_EOF)
2290                     is->viddec.finished = is->viddec.pkt_serial;
2291                 ret = 0;
2292                 break;
2293             }
2294
2295             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2296             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2297                 is->frame_last_filter_delay = 0;
2298             tb = filt_out->inputs[0]->time_base;
2299 #endif
2300             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2301             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2302             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), is->viddec.pkt_serial);
2303             av_frame_unref(frame);
2304 #if CONFIG_AVFILTER
2305         }
2306 #endif
2307
2308         if (ret < 0)
2309             goto the_end;
2310     }
2311  the_end:
2312 #if CONFIG_AVFILTER
2313     avfilter_graph_free(&graph);
2314 #endif
2315     av_frame_free(&frame);
2316     return 0;
2317 }
2318
2319 static int subtitle_thread(void *arg)
2320 {
2321     VideoState *is = arg;
2322     Frame *sp;
2323     int got_subtitle;
2324     double pts;
2325     int i, j;
2326     int r, g, b, y, u, v, a;
2327
2328     for (;;) {
2329         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2330             return 0;
2331
2332         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2333             break;
2334
2335         pts = 0;
2336
2337         if (got_subtitle && sp->sub.format == 0) {
2338             if (sp->sub.pts != AV_NOPTS_VALUE)
2339                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2340             sp->pts = pts;
2341             sp->serial = is->subdec.pkt_serial;
2342
2343             for (i = 0; i < sp->sub.num_rects; i++)
2344             {
2345                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2346                 {
2347                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2348                     y = RGB_TO_Y_CCIR(r, g, b);
2349                     u = RGB_TO_U_CCIR(r, g, b, 0);
2350                     v = RGB_TO_V_CCIR(r, g, b, 0);
2351                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2352                 }
2353             }
2354
2355             /* now we can update the picture count */
2356             frame_queue_push(&is->subpq);
2357         } else if (got_subtitle) {
2358             avsubtitle_free(&sp->sub);
2359         }
2360     }
2361     return 0;
2362 }
2363
2364 /* copy samples for viewing in editor window */
2365 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2366 {
2367     int size, len;
2368
2369     size = samples_size / sizeof(short);
2370     while (size > 0) {
2371         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2372         if (len > size)
2373             len = size;
2374         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2375         samples += len;
2376         is->sample_array_index += len;
2377         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2378             is->sample_array_index = 0;
2379         size -= len;
2380     }
2381 }
2382
2383 /* return the wanted number of samples to get better sync if sync_type is video
2384  * or external master clock */
2385 static int synchronize_audio(VideoState *is, int nb_samples)
2386 {
2387     int wanted_nb_samples = nb_samples;
2388
2389     /* if not master, then we try to remove or add samples to correct the clock */
2390     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2391         double diff, avg_diff;
2392         int min_nb_samples, max_nb_samples;
2393
2394         diff = get_clock(&is->audclk) - get_master_clock(is);
2395
2396         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2397             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2398             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2399                 /* not enough measures to have a correct estimate */
2400                 is->audio_diff_avg_count++;
2401             } else {
2402                 /* estimate the A-V difference */
2403                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2404
2405                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2406                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2407                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2408                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2409                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2410                 }
2411                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2412                         diff, avg_diff, wanted_nb_samples - nb_samples,
2413                         is->audio_clock, is->audio_diff_threshold);
2414             }
2415         } else {
2416             /* too big difference : may be initial PTS errors, so
2417                reset A-V filter */
2418             is->audio_diff_avg_count = 0;
2419             is->audio_diff_cum       = 0;
2420         }
2421     }
2422
2423     return wanted_nb_samples;
2424 }
2425
2426 /**
2427  * Decode one audio frame and return its uncompressed size.
2428  *
2429  * The processed audio frame is decoded, converted if required, and
2430  * stored in is->audio_buf, with size in bytes given by the return
2431  * value.
2432  */
2433 static int audio_decode_frame(VideoState *is)
2434 {
2435     int data_size, resampled_data_size;
2436     int64_t dec_channel_layout;
2437     av_unused double audio_clock0;
2438     int wanted_nb_samples;
2439     Frame *af;
2440
2441     if (is->paused)
2442         return -1;
2443
2444     do {
2445         if (!(af = frame_queue_peek_readable(&is->sampq)))
2446             return -1;
2447         frame_queue_next(&is->sampq);
2448     } while (af->serial != is->audioq.serial);
2449
2450     data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(af->frame),
2451                                            af->frame->nb_samples,
2452                                            af->frame->format, 1);
2453
2454     dec_channel_layout =
2455         (af->frame->channel_layout && av_frame_get_channels(af->frame) == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2456         af->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(af->frame));
2457     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2458
2459     if (af->frame->format        != is->audio_src.fmt            ||
2460         dec_channel_layout       != is->audio_src.channel_layout ||
2461         af->frame->sample_rate   != is->audio_src.freq           ||
2462         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2463         swr_free(&is->swr_ctx);
2464         is->swr_ctx = swr_alloc_set_opts(NULL,
2465                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2466                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2467                                          0, NULL);
2468         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2469             av_log(NULL, AV_LOG_ERROR,
2470                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2471                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), av_frame_get_channels(af->frame),
2472                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2473             swr_free(&is->swr_ctx);
2474             return -1;
2475         }
2476         is->audio_src.channel_layout = dec_channel_layout;
2477         is->audio_src.channels       = av_frame_get_channels(af->frame);
2478         is->audio_src.freq = af->frame->sample_rate;
2479         is->audio_src.fmt = af->frame->format;
2480     }
2481
2482     if (is->swr_ctx) {
2483         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2484         uint8_t **out = &is->audio_buf1;
2485         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2486         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2487         int len2;
2488         if (out_size < 0) {
2489             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2490             return -1;
2491         }
2492         if (wanted_nb_samples != af->frame->nb_samples) {
2493             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2494                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2495                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2496                 return -1;
2497             }
2498         }
2499         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2500         if (!is->audio_buf1)
2501             return AVERROR(ENOMEM);
2502         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2503         if (len2 < 0) {
2504             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2505             return -1;
2506         }
2507         if (len2 == out_count) {
2508             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2509             if (swr_init(is->swr_ctx) < 0)
2510                 swr_free(&is->swr_ctx);
2511         }
2512         is->audio_buf = is->audio_buf1;
2513         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2514     } else {
2515         is->audio_buf = af->frame->data[0];
2516         resampled_data_size = data_size;
2517     }
2518
2519     audio_clock0 = is->audio_clock;
2520     /* update the audio clock with the pts */
2521     if (!isnan(af->pts))
2522         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2523     else
2524         is->audio_clock = NAN;
2525     is->audio_clock_serial = af->serial;
2526 #ifdef DEBUG
2527     {
2528         static double last_clock;
2529         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2530                is->audio_clock - last_clock,
2531                is->audio_clock, audio_clock0);
2532         last_clock = is->audio_clock;
2533     }
2534 #endif
2535     return resampled_data_size;
2536 }
2537
2538 /* prepare a new audio buffer */
2539 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2540 {
2541     VideoState *is = opaque;
2542     int audio_size, len1;
2543
2544     audio_callback_time = av_gettime_relative();
2545
2546     while (len > 0) {
2547         if (is->audio_buf_index >= is->audio_buf_size) {
2548            audio_size = audio_decode_frame(is);
2549            if (audio_size < 0) {
2550                 /* if error, just output silence */
2551                is->audio_buf      = is->silence_buf;
2552                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2553            } else {
2554                if (is->show_mode != SHOW_MODE_VIDEO)
2555                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2556                is->audio_buf_size = audio_size;
2557            }
2558            is->audio_buf_index = 0;
2559         }
2560         len1 = is->audio_buf_size - is->audio_buf_index;
2561         if (len1 > len)
2562             len1 = len;
2563         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2564         len -= len1;
2565         stream += len1;
2566         is->audio_buf_index += len1;
2567     }
2568     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2569     /* Let's assume the audio driver that is used by SDL has two periods. */
2570     if (!isnan(is->audio_clock)) {
2571         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);
2572         sync_clock_to_slave(&is->extclk, &is->audclk);
2573     }
2574 }
2575
2576 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2577 {
2578     SDL_AudioSpec wanted_spec, spec;
2579     const char *env;
2580     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2581     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2582     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2583
2584     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2585     if (env) {
2586         wanted_nb_channels = atoi(env);
2587         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2588     }
2589     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2590         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2591         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2592     }
2593     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2594     wanted_spec.channels = wanted_nb_channels;
2595     wanted_spec.freq = wanted_sample_rate;
2596     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2597         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2598         return -1;
2599     }
2600     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2601         next_sample_rate_idx--;
2602     wanted_spec.format = AUDIO_S16SYS;
2603     wanted_spec.silence = 0;
2604     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2605     wanted_spec.callback = sdl_audio_callback;
2606     wanted_spec.userdata = opaque;
2607     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2608         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2609                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2610         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2611         if (!wanted_spec.channels) {
2612             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2613             wanted_spec.channels = wanted_nb_channels;
2614             if (!wanted_spec.freq) {
2615                 av_log(NULL, AV_LOG_ERROR,
2616                        "No more combinations to try, audio open failed\n");
2617                 return -1;
2618             }
2619         }
2620         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2621     }
2622     if (spec.format != AUDIO_S16SYS) {
2623         av_log(NULL, AV_LOG_ERROR,
2624                "SDL advised audio format %d is not supported!\n", spec.format);
2625         return -1;
2626     }
2627     if (spec.channels != wanted_spec.channels) {
2628         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2629         if (!wanted_channel_layout) {
2630             av_log(NULL, AV_LOG_ERROR,
2631                    "SDL advised channel count %d is not supported!\n", spec.channels);
2632             return -1;
2633         }
2634     }
2635
2636     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2637     audio_hw_params->freq = spec.freq;
2638     audio_hw_params->channel_layout = wanted_channel_layout;
2639     audio_hw_params->channels =  spec.channels;
2640     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2641     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);
2642     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2643         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2644         return -1;
2645     }
2646     return spec.size;
2647 }
2648
2649 /* open a given stream. Return 0 if OK */
2650 static int stream_component_open(VideoState *is, int stream_index)
2651 {
2652     AVFormatContext *ic = is->ic;
2653     AVCodecContext *avctx;
2654     AVCodec *codec;
2655     const char *forced_codec_name = NULL;
2656     AVDictionary *opts;
2657     AVDictionaryEntry *t = NULL;
2658     int sample_rate, nb_channels;
2659     int64_t channel_layout;
2660     int ret = 0;
2661     int stream_lowres = lowres;
2662
2663     if (stream_index < 0 || stream_index >= ic->nb_streams)
2664         return -1;
2665     avctx = ic->streams[stream_index]->codec;
2666
2667     codec = avcodec_find_decoder(avctx->codec_id);
2668
2669     switch(avctx->codec_type){
2670         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2671         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2672         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2673     }
2674     if (forced_codec_name)
2675         codec = avcodec_find_decoder_by_name(forced_codec_name);
2676     if (!codec) {
2677         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2678                                       "No codec could be found with name '%s'\n", forced_codec_name);
2679         else                   av_log(NULL, AV_LOG_WARNING,
2680                                       "No codec could be found with id %d\n", avctx->codec_id);
2681         return -1;
2682     }
2683
2684     avctx->codec_id = codec->id;
2685     if(stream_lowres > av_codec_get_max_lowres(codec)){
2686         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2687                 av_codec_get_max_lowres(codec));
2688         stream_lowres = av_codec_get_max_lowres(codec);
2689     }
2690     av_codec_set_lowres(avctx, stream_lowres);
2691
2692     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2693     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2694     if(codec->capabilities & CODEC_CAP_DR1)
2695         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2696
2697     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2698     if (!av_dict_get(opts, "threads", NULL, 0))
2699         av_dict_set(&opts, "threads", "auto", 0);
2700     if (stream_lowres)
2701         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2702     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2703         av_dict_set(&opts, "refcounted_frames", "1", 0);
2704     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2705         goto fail;
2706     }
2707     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2708         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2709         ret =  AVERROR_OPTION_NOT_FOUND;
2710         goto fail;
2711     }
2712
2713     is->eof = 0;
2714     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2715     switch (avctx->codec_type) {
2716     case AVMEDIA_TYPE_AUDIO:
2717 #if CONFIG_AVFILTER
2718         {
2719             AVFilterLink *link;
2720
2721             is->audio_filter_src.freq           = avctx->sample_rate;
2722             is->audio_filter_src.channels       = avctx->channels;
2723             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2724             is->audio_filter_src.fmt            = avctx->sample_fmt;
2725             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2726                 goto fail;
2727             link = is->out_audio_filter->inputs[0];
2728             sample_rate    = link->sample_rate;
2729             nb_channels    = link->channels;
2730             channel_layout = link->channel_layout;
2731         }
2732 #else
2733         sample_rate    = avctx->sample_rate;
2734         nb_channels    = avctx->channels;
2735         channel_layout = avctx->channel_layout;
2736 #endif
2737
2738         /* prepare audio output */
2739         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2740             goto fail;
2741         is->audio_hw_buf_size = ret;
2742         is->audio_src = is->audio_tgt;
2743         is->audio_buf_size  = 0;
2744         is->audio_buf_index = 0;
2745
2746         /* init averaging filter */
2747         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2748         is->audio_diff_avg_count = 0;
2749         /* since we do not have a precise anough audio fifo fullness,
2750            we correct audio sync only if larger than this threshold */
2751         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2752
2753         is->audio_stream = stream_index;
2754         is->audio_st = ic->streams[stream_index];
2755
2756         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2757         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2758             is->auddec.start_pts = is->audio_st->start_time;
2759             is->auddec.start_pts_tb = is->audio_st->time_base;
2760         }
2761         decoder_start(&is->auddec, audio_thread, is);
2762         SDL_PauseAudio(0);
2763         break;
2764     case AVMEDIA_TYPE_VIDEO:
2765         is->video_stream = stream_index;
2766         is->video_st = ic->streams[stream_index];
2767
2768         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2769         decoder_start(&is->viddec, video_thread, is);
2770         is->queue_attachments_req = 1;
2771         break;
2772     case AVMEDIA_TYPE_SUBTITLE:
2773         is->subtitle_stream = stream_index;
2774         is->subtitle_st = ic->streams[stream_index];
2775
2776         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2777         decoder_start(&is->subdec, subtitle_thread, is);
2778         break;
2779     default:
2780         break;
2781     }
2782
2783 fail:
2784     av_dict_free(&opts);
2785
2786     return ret;
2787 }
2788
2789 static void stream_component_close(VideoState *is, int stream_index)
2790 {
2791     AVFormatContext *ic = is->ic;
2792     AVCodecContext *avctx;
2793
2794     if (stream_index < 0 || stream_index >= ic->nb_streams)
2795         return;
2796     avctx = ic->streams[stream_index]->codec;
2797
2798     switch (avctx->codec_type) {
2799     case AVMEDIA_TYPE_AUDIO:
2800         decoder_abort(&is->auddec, &is->sampq);
2801         SDL_CloseAudio();
2802         decoder_destroy(&is->auddec);
2803         swr_free(&is->swr_ctx);
2804         av_freep(&is->audio_buf1);
2805         is->audio_buf1_size = 0;
2806         is->audio_buf = NULL;
2807
2808         if (is->rdft) {
2809             av_rdft_end(is->rdft);
2810             av_freep(&is->rdft_data);
2811             is->rdft = NULL;
2812             is->rdft_bits = 0;
2813         }
2814         break;
2815     case AVMEDIA_TYPE_VIDEO:
2816         decoder_abort(&is->viddec, &is->pictq);
2817         decoder_destroy(&is->viddec);
2818         break;
2819     case AVMEDIA_TYPE_SUBTITLE:
2820         decoder_abort(&is->subdec, &is->subpq);
2821         decoder_destroy(&is->subdec);
2822         break;
2823     default:
2824         break;
2825     }
2826
2827     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2828     avcodec_close(avctx);
2829     switch (avctx->codec_type) {
2830     case AVMEDIA_TYPE_AUDIO:
2831         is->audio_st = NULL;
2832         is->audio_stream = -1;
2833         break;
2834     case AVMEDIA_TYPE_VIDEO:
2835         is->video_st = NULL;
2836         is->video_stream = -1;
2837         break;
2838     case AVMEDIA_TYPE_SUBTITLE:
2839         is->subtitle_st = NULL;
2840         is->subtitle_stream = -1;
2841         break;
2842     default:
2843         break;
2844     }
2845 }
2846
2847 static int decode_interrupt_cb(void *ctx)
2848 {
2849     VideoState *is = ctx;
2850     return is->abort_request;
2851 }
2852
2853 static int is_realtime(AVFormatContext *s)
2854 {
2855     if(   !strcmp(s->iformat->name, "rtp")
2856        || !strcmp(s->iformat->name, "rtsp")
2857        || !strcmp(s->iformat->name, "sdp")
2858     )
2859         return 1;
2860
2861     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2862                  || !strncmp(s->filename, "udp:", 4)
2863                 )
2864     )
2865         return 1;
2866     return 0;
2867 }
2868
2869 /* this thread gets the stream from the disk or the network */
2870 static int read_thread(void *arg)
2871 {
2872     VideoState *is = arg;
2873     AVFormatContext *ic = NULL;
2874     int err, i, ret;
2875     int st_index[AVMEDIA_TYPE_NB];
2876     AVPacket pkt1, *pkt = &pkt1;
2877     int64_t stream_start_time;
2878     int pkt_in_play_range = 0;
2879     AVDictionaryEntry *t;
2880     AVDictionary **opts;
2881     int orig_nb_streams;
2882     SDL_mutex *wait_mutex = SDL_CreateMutex();
2883     int scan_all_pmts_set = 0;
2884     int64_t pkt_ts;
2885
2886     memset(st_index, -1, sizeof(st_index));
2887     is->last_video_stream = is->video_stream = -1;
2888     is->last_audio_stream = is->audio_stream = -1;
2889     is->last_subtitle_stream = is->subtitle_stream = -1;
2890     is->eof = 0;
2891
2892     ic = avformat_alloc_context();
2893     if (!ic) {
2894         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2895         ret = AVERROR(ENOMEM);
2896         goto fail;
2897     }
2898     ic->interrupt_callback.callback = decode_interrupt_cb;
2899     ic->interrupt_callback.opaque = is;
2900     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2901         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2902         scan_all_pmts_set = 1;
2903     }
2904     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2905     if (err < 0) {
2906         print_error(is->filename, err);
2907         ret = -1;
2908         goto fail;
2909     }
2910     if (scan_all_pmts_set)
2911         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2912
2913     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2914         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2915         ret = AVERROR_OPTION_NOT_FOUND;
2916         goto fail;
2917     }
2918     is->ic = ic;
2919
2920     if (genpts)
2921         ic->flags |= AVFMT_FLAG_GENPTS;
2922
2923     av_format_inject_global_side_data(ic);
2924
2925     opts = setup_find_stream_info_opts(ic, codec_opts);
2926     orig_nb_streams = ic->nb_streams;
2927
2928     err = avformat_find_stream_info(ic, opts);
2929
2930     for (i = 0; i < orig_nb_streams; i++)
2931         av_dict_free(&opts[i]);
2932     av_freep(&opts);
2933
2934     if (err < 0) {
2935         av_log(NULL, AV_LOG_WARNING,
2936                "%s: could not find codec parameters\n", is->filename);
2937         ret = -1;
2938         goto fail;
2939     }
2940
2941     if (ic->pb)
2942         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2943
2944     if (seek_by_bytes < 0)
2945         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2946
2947     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2948
2949     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2950         window_title = av_asprintf("%s - %s", t->value, input_filename);
2951
2952     /* if seeking requested, we execute it */
2953     if (start_time != AV_NOPTS_VALUE) {
2954         int64_t timestamp;
2955
2956         timestamp = start_time;
2957         /* add the stream start time */
2958         if (ic->start_time != AV_NOPTS_VALUE)
2959             timestamp += ic->start_time;
2960         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2961         if (ret < 0) {
2962             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2963                     is->filename, (double)timestamp / AV_TIME_BASE);
2964         }
2965     }
2966
2967     is->realtime = is_realtime(ic);
2968
2969     if (show_status)
2970         av_dump_format(ic, 0, is->filename, 0);
2971
2972     for (i = 0; i < ic->nb_streams; i++) {
2973         AVStream *st = ic->streams[i];
2974         enum AVMediaType type = st->codec->codec_type;
2975         st->discard = AVDISCARD_ALL;
2976         if (wanted_stream_spec[type] && st_index[type] == -1)
2977             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2978                 st_index[type] = i;
2979     }
2980     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2981         if (wanted_stream_spec[i] && st_index[i] == -1) {
2982             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));
2983             st_index[i] = INT_MAX;
2984         }
2985     }
2986
2987     if (!video_disable)
2988         st_index[AVMEDIA_TYPE_VIDEO] =
2989             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2990                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2991     if (!audio_disable)
2992         st_index[AVMEDIA_TYPE_AUDIO] =
2993             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2994                                 st_index[AVMEDIA_TYPE_AUDIO],
2995                                 st_index[AVMEDIA_TYPE_VIDEO],
2996                                 NULL, 0);
2997     if (!video_disable && !subtitle_disable)
2998         st_index[AVMEDIA_TYPE_SUBTITLE] =
2999             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
3000                                 st_index[AVMEDIA_TYPE_SUBTITLE],
3001                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
3002                                  st_index[AVMEDIA_TYPE_AUDIO] :
3003                                  st_index[AVMEDIA_TYPE_VIDEO]),
3004                                 NULL, 0);
3005
3006     is->show_mode = show_mode;
3007     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
3008         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
3009         AVCodecContext *avctx = st->codec;
3010         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
3011         if (avctx->width)
3012             set_default_window_size(avctx->width, avctx->height, sar);
3013     }
3014
3015     /* open the streams */
3016     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
3017         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
3018     }
3019
3020     ret = -1;
3021     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
3022         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
3023     }
3024     if (is->show_mode == SHOW_MODE_NONE)
3025         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
3026
3027     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
3028         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
3029     }
3030
3031     if (is->video_stream < 0 && is->audio_stream < 0) {
3032         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
3033                is->filename);
3034         ret = -1;
3035         goto fail;
3036     }
3037
3038     if (infinite_buffer < 0 && is->realtime)
3039         infinite_buffer = 1;
3040
3041     for (;;) {
3042         if (is->abort_request)
3043             break;
3044         if (is->paused != is->last_paused) {
3045             is->last_paused = is->paused;
3046             if (is->paused)
3047                 is->read_pause_return = av_read_pause(ic);
3048             else
3049                 av_read_play(ic);
3050         }
3051 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
3052         if (is->paused &&
3053                 (!strcmp(ic->iformat->name, "rtsp") ||
3054                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
3055             /* wait 10 ms to avoid trying to get another packet */
3056             /* XXX: horrible */
3057             SDL_Delay(10);
3058             continue;
3059         }
3060 #endif
3061         if (is->seek_req) {
3062             int64_t seek_target = is->seek_pos;
3063             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
3064             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
3065 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
3066 //      of the seek_pos/seek_rel variables
3067
3068             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
3069             if (ret < 0) {
3070                 av_log(NULL, AV_LOG_ERROR,
3071                        "%s: error while seeking\n", is->ic->filename);
3072             } else {
3073                 if (is->audio_stream >= 0) {
3074                     packet_queue_flush(&is->audioq);
3075                     packet_queue_put(&is->audioq, &flush_pkt);
3076                 }
3077                 if (is->subtitle_stream >= 0) {
3078                     packet_queue_flush(&is->subtitleq);
3079                     packet_queue_put(&is->subtitleq, &flush_pkt);
3080                 }
3081                 if (is->video_stream >= 0) {
3082                     packet_queue_flush(&is->videoq);
3083                     packet_queue_put(&is->videoq, &flush_pkt);
3084                 }
3085                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
3086                    set_clock(&is->extclk, NAN, 0);
3087                 } else {
3088                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
3089                 }
3090             }
3091             is->seek_req = 0;
3092             is->queue_attachments_req = 1;
3093             is->eof = 0;
3094             if (is->paused)
3095                 step_to_next_frame(is);
3096         }
3097         if (is->queue_attachments_req) {
3098             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
3099                 AVPacket copy;
3100                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
3101                     goto fail;
3102                 packet_queue_put(&is->videoq, &copy);
3103                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3104             }
3105             is->queue_attachments_req = 0;
3106         }
3107
3108         /* if the queue are full, no need to read more */
3109         if (infinite_buffer<1 &&
3110               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3111             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
3112                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
3113                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3114                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
3115             /* wait 10 ms */
3116             SDL_LockMutex(wait_mutex);
3117             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3118             SDL_UnlockMutex(wait_mutex);
3119             continue;
3120         }
3121         if (!is->paused &&
3122             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3123             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3124             if (loop != 1 && (!loop || --loop)) {
3125                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3126             } else if (autoexit) {
3127                 ret = AVERROR_EOF;
3128                 goto fail;
3129             }
3130         }
3131         ret = av_read_frame(ic, pkt);
3132         if (ret < 0) {
3133             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3134                 if (is->video_stream >= 0)
3135                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3136                 if (is->audio_stream >= 0)
3137                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3138                 if (is->subtitle_stream >= 0)
3139                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3140                 is->eof = 1;
3141             }
3142             if (ic->pb && ic->pb->error)
3143                 break;
3144             SDL_LockMutex(wait_mutex);
3145             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3146             SDL_UnlockMutex(wait_mutex);
3147             continue;
3148         } else {
3149             is->eof = 0;
3150         }
3151         /* check if packet is in play range specified by user, then queue, otherwise discard */
3152         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3153         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3154         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3155                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3156                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3157                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3158                 <= ((double)duration / 1000000);
3159         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3160             packet_queue_put(&is->audioq, pkt);
3161         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3162                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3163             packet_queue_put(&is->videoq, pkt);
3164         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3165             packet_queue_put(&is->subtitleq, pkt);
3166         } else {
3167             av_free_packet(pkt);
3168         }
3169     }
3170     /* wait until the end */
3171     while (!is->abort_request) {
3172         SDL_Delay(100);
3173     }
3174
3175     ret = 0;
3176  fail:
3177     /* close each stream */
3178     if (is->audio_stream >= 0)
3179         stream_component_close(is, is->audio_stream);
3180     if (is->video_stream >= 0)
3181         stream_component_close(is, is->video_stream);
3182     if (is->subtitle_stream >= 0)
3183         stream_component_close(is, is->subtitle_stream);
3184     if (ic) {
3185         avformat_close_input(&ic);
3186         is->ic = NULL;
3187     }
3188
3189     if (ret != 0) {
3190         SDL_Event event;
3191
3192         event.type = FF_QUIT_EVENT;
3193         event.user.data1 = is;
3194         SDL_PushEvent(&event);
3195     }
3196     SDL_DestroyMutex(wait_mutex);
3197     return 0;
3198 }
3199
3200 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3201 {
3202     VideoState *is;
3203
3204     is = av_mallocz(sizeof(VideoState));
3205     if (!is)
3206         return NULL;
3207     av_strlcpy(is->filename, filename, sizeof(is->filename));
3208     is->iformat = iformat;
3209     is->ytop    = 0;
3210     is->xleft   = 0;
3211
3212     /* start video display */
3213     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3214         goto fail;
3215     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3216         goto fail;
3217     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3218         goto fail;
3219
3220     packet_queue_init(&is->videoq);
3221     packet_queue_init(&is->audioq);
3222     packet_queue_init(&is->subtitleq);
3223
3224     is->continue_read_thread = SDL_CreateCond();
3225
3226     init_clock(&is->vidclk, &is->videoq.serial);
3227     init_clock(&is->audclk, &is->audioq.serial);
3228     init_clock(&is->extclk, &is->extclk.serial);
3229     is->audio_clock_serial = -1;
3230     is->av_sync_type = av_sync_type;
3231     is->read_tid     = SDL_CreateThread(read_thread, is);
3232     if (!is->read_tid) {
3233 fail:
3234         stream_close(is);
3235         return NULL;
3236     }
3237     return is;
3238 }
3239
3240 static void stream_cycle_channel(VideoState *is, int codec_type)
3241 {
3242     AVFormatContext *ic = is->ic;
3243     int start_index, stream_index;
3244     int old_index;
3245     AVStream *st;
3246     AVProgram *p = NULL;
3247     int nb_streams = is->ic->nb_streams;
3248
3249     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3250         start_index = is->last_video_stream;
3251         old_index = is->video_stream;
3252     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3253         start_index = is->last_audio_stream;
3254         old_index = is->audio_stream;
3255     } else {
3256         start_index = is->last_subtitle_stream;
3257         old_index = is->subtitle_stream;
3258     }
3259     stream_index = start_index;
3260
3261     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3262         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3263         if (p) {
3264             nb_streams = p->nb_stream_indexes;
3265             for (start_index = 0; start_index < nb_streams; start_index++)
3266                 if (p->stream_index[start_index] == stream_index)
3267                     break;
3268             if (start_index == nb_streams)
3269                 start_index = -1;
3270             stream_index = start_index;
3271         }
3272     }
3273
3274     for (;;) {
3275         if (++stream_index >= nb_streams)
3276         {
3277             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3278             {
3279                 stream_index = -1;
3280                 is->last_subtitle_stream = -1;
3281                 goto the_end;
3282             }
3283             if (start_index == -1)
3284                 return;
3285             stream_index = 0;
3286         }
3287         if (stream_index == start_index)
3288             return;
3289         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3290         if (st->codec->codec_type == codec_type) {
3291             /* check that parameters are OK */
3292             switch (codec_type) {
3293             case AVMEDIA_TYPE_AUDIO:
3294                 if (st->codec->sample_rate != 0 &&
3295                     st->codec->channels != 0)
3296                     goto the_end;
3297                 break;
3298             case AVMEDIA_TYPE_VIDEO:
3299             case AVMEDIA_TYPE_SUBTITLE:
3300                 goto the_end;
3301             default:
3302                 break;
3303             }
3304         }
3305     }
3306  the_end:
3307     if (p && stream_index != -1)
3308         stream_index = p->stream_index[stream_index];
3309     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3310            av_get_media_type_string(codec_type),
3311            old_index,
3312            stream_index);
3313
3314     stream_component_close(is, old_index);
3315     stream_component_open(is, stream_index);
3316 }
3317
3318
3319 static void toggle_full_screen(VideoState *is)
3320 {
3321 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3322     /* OS X needs to reallocate the SDL overlays */
3323     int i;
3324     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3325         is->pictq.queue[i].reallocate = 1;
3326 #endif
3327     is_full_screen = !is_full_screen;
3328     video_open(is, 1, NULL);
3329 }
3330
3331 static void toggle_audio_display(VideoState *is)
3332 {
3333     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3334     int next = is->show_mode;
3335     do {
3336         next = (next + 1) % SHOW_MODE_NB;
3337     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3338     if (is->show_mode != next) {
3339         fill_rectangle(screen,
3340                     is->xleft, is->ytop, is->width, is->height,
3341                     bgcolor, 1);
3342         is->force_refresh = 1;
3343         is->show_mode = next;
3344     }
3345 }
3346
3347 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3348     double remaining_time = 0.0;
3349     SDL_PumpEvents();
3350     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3351         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3352             SDL_ShowCursor(0);
3353             cursor_hidden = 1;
3354         }
3355         if (remaining_time > 0.0)
3356             av_usleep((int64_t)(remaining_time * 1000000.0));
3357         remaining_time = REFRESH_RATE;
3358         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3359             video_refresh(is, &remaining_time);
3360         SDL_PumpEvents();
3361     }
3362 }
3363
3364 static void seek_chapter(VideoState *is, int incr)
3365 {
3366     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3367     int i;
3368
3369     if (!is->ic->nb_chapters)
3370         return;
3371
3372     /* find the current chapter */
3373     for (i = 0; i < is->ic->nb_chapters; i++) {
3374         AVChapter *ch = is->ic->chapters[i];
3375         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3376             i--;
3377             break;
3378         }
3379     }
3380
3381     i += incr;
3382     i = FFMAX(i, 0);
3383     if (i >= is->ic->nb_chapters)
3384         return;
3385
3386     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3387     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3388                                  AV_TIME_BASE_Q), 0, 0);
3389 }
3390
3391 /* handle an event sent by the GUI */
3392 static void event_loop(VideoState *cur_stream)
3393 {
3394     SDL_Event event;
3395     double incr, pos, frac;
3396
3397     for (;;) {
3398         double x;
3399         refresh_loop_wait_event(cur_stream, &event);
3400         switch (event.type) {
3401         case SDL_KEYDOWN:
3402             if (exit_on_keydown) {
3403                 do_exit(cur_stream);
3404                 break;
3405             }
3406             switch (event.key.keysym.sym) {
3407             case SDLK_ESCAPE:
3408             case SDLK_q:
3409                 do_exit(cur_stream);
3410                 break;
3411             case SDLK_f:
3412                 toggle_full_screen(cur_stream);
3413                 cur_stream->force_refresh = 1;
3414                 break;
3415             case SDLK_p:
3416             case SDLK_SPACE:
3417                 toggle_pause(cur_stream);
3418                 break;
3419             case SDLK_s: // S: Step to next frame
3420                 step_to_next_frame(cur_stream);
3421                 break;
3422             case SDLK_a:
3423                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3424                 break;
3425             case SDLK_v:
3426                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3427                 break;
3428             case SDLK_c:
3429                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3430                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3431                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3432                 break;
3433             case SDLK_t:
3434                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3435                 break;
3436             case SDLK_w:
3437 #if CONFIG_AVFILTER
3438                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3439                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3440                         cur_stream->vfilter_idx = 0;
3441                 } else {
3442                     cur_stream->vfilter_idx = 0;
3443                     toggle_audio_display(cur_stream);
3444                 }
3445 #else
3446                 toggle_audio_display(cur_stream);
3447 #endif
3448                 break;
3449             case SDLK_PAGEUP:
3450                 if (cur_stream->ic->nb_chapters <= 1) {
3451                     incr = 600.0;
3452                     goto do_seek;
3453                 }
3454                 seek_chapter(cur_stream, 1);
3455                 break;
3456             case SDLK_PAGEDOWN:
3457                 if (cur_stream->ic->nb_chapters <= 1) {
3458                     incr = -600.0;
3459                     goto do_seek;
3460                 }
3461                 seek_chapter(cur_stream, -1);
3462                 break;
3463             case SDLK_LEFT:
3464                 incr = -10.0;
3465                 goto do_seek;
3466             case SDLK_RIGHT:
3467                 incr = 10.0;
3468                 goto do_seek;
3469             case SDLK_UP:
3470                 incr = 60.0;
3471                 goto do_seek;
3472             case SDLK_DOWN:
3473                 incr = -60.0;
3474             do_seek:
3475                     if (seek_by_bytes) {
3476                         pos = -1;
3477                         if (pos < 0 && cur_stream->video_stream >= 0)
3478                             pos = frame_queue_last_pos(&cur_stream->pictq);
3479                         if (pos < 0 && cur_stream->audio_stream >= 0)
3480                             pos = frame_queue_last_pos(&cur_stream->sampq);
3481                         if (pos < 0)
3482                             pos = avio_tell(cur_stream->ic->pb);
3483                         if (cur_stream->ic->bit_rate)
3484                             incr *= cur_stream->ic->bit_rate / 8.0;
3485                         else
3486                             incr *= 180000.0;
3487                         pos += incr;
3488                         stream_seek(cur_stream, pos, incr, 1);
3489                     } else {
3490                         pos = get_master_clock(cur_stream);
3491                         if (isnan(pos))
3492                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3493                         pos += incr;
3494                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3495                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3496                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3497                     }
3498                 break;
3499             default:
3500                 break;
3501             }
3502             break;
3503         case SDL_VIDEOEXPOSE:
3504             cur_stream->force_refresh = 1;
3505             break;
3506         case SDL_MOUSEBUTTONDOWN:
3507             if (exit_on_mousedown) {
3508                 do_exit(cur_stream);
3509                 break;
3510             }
3511         case SDL_MOUSEMOTION:
3512             if (cursor_hidden) {
3513                 SDL_ShowCursor(1);
3514                 cursor_hidden = 0;
3515             }
3516             cursor_last_shown = av_gettime_relative();
3517             if (event.type == SDL_MOUSEBUTTONDOWN) {
3518                 x = event.button.x;
3519             } else {
3520                 if (event.motion.state != SDL_PRESSED)
3521                     break;
3522                 x = event.motion.x;
3523             }
3524                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3525                     uint64_t size =  avio_size(cur_stream->ic->pb);
3526                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3527                 } else {
3528                     int64_t ts;
3529                     int ns, hh, mm, ss;
3530                     int tns, thh, tmm, tss;
3531                     tns  = cur_stream->ic->duration / 1000000LL;
3532                     thh  = tns / 3600;
3533                     tmm  = (tns % 3600) / 60;
3534                     tss  = (tns % 60);
3535                     frac = x / cur_stream->width;
3536                     ns   = frac * tns;
3537                     hh   = ns / 3600;
3538                     mm   = (ns % 3600) / 60;
3539                     ss   = (ns % 60);
3540                     av_log(NULL, AV_LOG_INFO,
3541                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3542                             hh, mm, ss, thh, tmm, tss);
3543                     ts = frac * cur_stream->ic->duration;
3544                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3545                         ts += cur_stream->ic->start_time;
3546                     stream_seek(cur_stream, ts, 0, 0);
3547                 }
3548             break;
3549         case SDL_VIDEORESIZE:
3550                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3551                                           SDL_HWSURFACE|(is_full_screen?SDL_FULLSCREEN:SDL_RESIZABLE)|SDL_ASYNCBLIT|SDL_HWACCEL);
3552                 if (!screen) {
3553                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3554                     do_exit(cur_stream);
3555                 }
3556                 screen_width  = cur_stream->width  = screen->w;
3557                 screen_height = cur_stream->height = screen->h;
3558                 cur_stream->force_refresh = 1;
3559             break;
3560         case SDL_QUIT:
3561         case FF_QUIT_EVENT:
3562             do_exit(cur_stream);
3563             break;
3564         case FF_ALLOC_EVENT:
3565             alloc_picture(event.user.data1);
3566             break;
3567         default:
3568             break;
3569         }
3570     }
3571 }
3572
3573 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3574 {
3575     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3576     return opt_default(NULL, "video_size", arg);
3577 }
3578
3579 static int opt_width(void *optctx, const char *opt, const char *arg)
3580 {
3581     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3582     return 0;
3583 }
3584
3585 static int opt_height(void *optctx, const char *opt, const char *arg)
3586 {
3587     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3588     return 0;
3589 }
3590
3591 static int opt_format(void *optctx, const char *opt, const char *arg)
3592 {
3593     file_iformat = av_find_input_format(arg);
3594     if (!file_iformat) {
3595         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3596         return AVERROR(EINVAL);
3597     }
3598     return 0;
3599 }
3600
3601 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3602 {
3603     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3604     return opt_default(NULL, "pixel_format", arg);
3605 }
3606
3607 static int opt_sync(void *optctx, const char *opt, const char *arg)
3608 {
3609     if (!strcmp(arg, "audio"))
3610         av_sync_type = AV_SYNC_AUDIO_MASTER;
3611     else if (!strcmp(arg, "video"))
3612         av_sync_type = AV_SYNC_VIDEO_MASTER;
3613     else if (!strcmp(arg, "ext"))
3614         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3615     else {
3616         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3617         exit(1);
3618     }
3619     return 0;
3620 }
3621
3622 static int opt_seek(void *optctx, const char *opt, const char *arg)
3623 {
3624     start_time = parse_time_or_die(opt, arg, 1);
3625     return 0;
3626 }
3627
3628 static int opt_duration(void *optctx, const char *opt, const char *arg)
3629 {
3630     duration = parse_time_or_die(opt, arg, 1);
3631     return 0;
3632 }
3633
3634 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3635 {
3636     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3637                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3638                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3639                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3640     return 0;
3641 }
3642
3643 static void opt_input_file(void *optctx, const char *filename)
3644 {
3645     if (input_filename) {
3646         av_log(NULL, AV_LOG_FATAL,
3647                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3648                 filename, input_filename);
3649         exit(1);
3650     }
3651     if (!strcmp(filename, "-"))
3652         filename = "pipe:";
3653     input_filename = filename;
3654 }
3655
3656 static int opt_codec(void *optctx, const char *opt, const char *arg)
3657 {
3658    const char *spec = strchr(opt, ':');
3659    if (!spec) {
3660        av_log(NULL, AV_LOG_ERROR,
3661               "No media specifier was specified in '%s' in option '%s'\n",
3662                arg, opt);
3663        return AVERROR(EINVAL);
3664    }
3665    spec++;
3666    switch (spec[0]) {
3667    case 'a' :    audio_codec_name = arg; break;
3668    case 's' : subtitle_codec_name = arg; break;
3669    case 'v' :    video_codec_name = arg; break;
3670    default:
3671        av_log(NULL, AV_LOG_ERROR,
3672               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3673        return AVERROR(EINVAL);
3674    }
3675    return 0;
3676 }
3677
3678 static int dummy;
3679
3680 static const OptionDef options[] = {
3681 #include "cmdutils_common_opts.h"
3682     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3683     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3684     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3685     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3686     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3687     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3688     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3689     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3690     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3691     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3692     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3693     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3694     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3695     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3696     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3697     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3698     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3699     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3700     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3701     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3702     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3703     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3704     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3705     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3706     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3707     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3708     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3709     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3710     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3711 #if CONFIG_AVFILTER
3712     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3713     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3714 #endif
3715     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3716     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3717     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3718     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3719     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3720     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3721     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3722     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3723     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3724     { NULL, },
3725 };
3726
3727 static void show_usage(void)
3728 {
3729     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3730     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3731     av_log(NULL, AV_LOG_INFO, "\n");
3732 }
3733
3734 void show_help_default(const char *opt, const char *arg)
3735 {