avformat/concatdec: set safe mode to enabled instead of auto
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/eval.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/buffersink.h"
53 # include "libavfilter/buffersrc.h"
54 #endif
55
56 #include <SDL.h>
57 #include <SDL_thread.h>
58
59 #include "cmdutils.h"
60
61 #include <assert.h>
62
63 const char program_name[] = "ffplay";
64 const int program_birth_year = 2003;
65
66 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
67 #define MIN_FRAMES 25
68 #define EXTERNAL_CLOCK_MIN_FRAMES 2
69 #define EXTERNAL_CLOCK_MAX_FRAMES 10
70
71 /* Minimum SDL audio buffer size, in samples. */
72 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
73 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
74 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
75
76 /* Step size for volume control */
77 #define SDL_VOLUME_STEP (SDL_MIX_MAXVOLUME / 50)
78
79 /* no AV sync correction is done if below the minimum AV sync threshold */
80 #define AV_SYNC_THRESHOLD_MIN 0.04
81 /* AV sync correction is done if above the maximum AV sync threshold */
82 #define AV_SYNC_THRESHOLD_MAX 0.1
83 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
84 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
85 /* no AV correction is done if too big error */
86 #define AV_NOSYNC_THRESHOLD 10.0
87
88 /* maximum audio speed change to get correct sync */
89 #define SAMPLE_CORRECTION_PERCENT_MAX 10
90
91 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
92 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
93 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
94 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
95
96 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
97 #define AUDIO_DIFF_AVG_NB   20
98
99 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
100 #define REFRESH_RATE 0.01
101
102 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
103 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
104 #define SAMPLE_ARRAY_SIZE (8 * 65536)
105
106 #define CURSOR_HIDE_DELAY 1000000
107
108 static unsigned sws_flags = SWS_BICUBIC;
109
110 typedef struct MyAVPacketList {
111     AVPacket pkt;
112     struct MyAVPacketList *next;
113     int serial;
114 } MyAVPacketList;
115
116 typedef struct PacketQueue {
117     MyAVPacketList *first_pkt, *last_pkt;
118     int nb_packets;
119     int size;
120     int abort_request;
121     int serial;
122     SDL_mutex *mutex;
123     SDL_cond *cond;
124 } PacketQueue;
125
126 #define VIDEO_PICTURE_QUEUE_SIZE 3
127 #define SUBPICTURE_QUEUE_SIZE 16
128 #define SAMPLE_QUEUE_SIZE 9
129 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
130
131 typedef struct AudioParams {
132     int freq;
133     int channels;
134     int64_t channel_layout;
135     enum AVSampleFormat fmt;
136     int frame_size;
137     int bytes_per_sec;
138 } AudioParams;
139
140 typedef struct Clock {
141     double pts;           /* clock base */
142     double pts_drift;     /* clock base minus time at which we updated the clock */
143     double last_updated;
144     double speed;
145     int serial;           /* clock is based on a packet with this serial */
146     int paused;
147     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
148 } Clock;
149
150 /* Common struct for handling all types of decoded data and allocated render buffers. */
151 typedef struct Frame {
152     AVFrame *frame;
153     AVSubtitle sub;
154     AVSubtitleRect **subrects;  /* rescaled subtitle rectangles in yuva */
155     int serial;
156     double pts;           /* presentation timestamp for the frame */
157     double duration;      /* estimated duration of the frame */
158     int64_t pos;          /* byte position of the frame in the input file */
159     SDL_Overlay *bmp;
160     int allocated;
161     int reallocate;
162     int width;
163     int height;
164     AVRational sar;
165 } Frame;
166
167 typedef struct FrameQueue {
168     Frame queue[FRAME_QUEUE_SIZE];
169     int rindex;
170     int windex;
171     int size;
172     int max_size;
173     int keep_last;
174     int rindex_shown;
175     SDL_mutex *mutex;
176     SDL_cond *cond;
177     PacketQueue *pktq;
178 } FrameQueue;
179
180 enum {
181     AV_SYNC_AUDIO_MASTER, /* default choice */
182     AV_SYNC_VIDEO_MASTER,
183     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
184 };
185
186 typedef struct Decoder {
187     AVPacket pkt;
188     AVPacket pkt_temp;
189     PacketQueue *queue;
190     AVCodecContext *avctx;
191     int pkt_serial;
192     int finished;
193     int packet_pending;
194     SDL_cond *empty_queue_cond;
195     int64_t start_pts;
196     AVRational start_pts_tb;
197     int64_t next_pts;
198     AVRational next_pts_tb;
199     SDL_Thread *decoder_tid;
200 } Decoder;
201
202 typedef struct VideoState {
203     SDL_Thread *read_tid;
204     AVInputFormat *iformat;
205     int abort_request;
206     int force_refresh;
207     int paused;
208     int last_paused;
209     int queue_attachments_req;
210     int seek_req;
211     int seek_flags;
212     int64_t seek_pos;
213     int64_t seek_rel;
214     int read_pause_return;
215     AVFormatContext *ic;
216     int realtime;
217
218     Clock audclk;
219     Clock vidclk;
220     Clock extclk;
221
222     FrameQueue pictq;
223     FrameQueue subpq;
224     FrameQueue sampq;
225
226     Decoder auddec;
227     Decoder viddec;
228     Decoder subdec;
229
230     int viddec_width;
231     int viddec_height;
232
233     int audio_stream;
234
235     int av_sync_type;
236
237     double audio_clock;
238     int audio_clock_serial;
239     double audio_diff_cum; /* used for AV difference average computation */
240     double audio_diff_avg_coef;
241     double audio_diff_threshold;
242     int audio_diff_avg_count;
243     AVStream *audio_st;
244     PacketQueue audioq;
245     int audio_hw_buf_size;
246     uint8_t silence_buf[SDL_AUDIO_MIN_BUFFER_SIZE];
247     uint8_t *audio_buf;
248     uint8_t *audio_buf1;
249     unsigned int audio_buf_size; /* in bytes */
250     unsigned int audio_buf1_size;
251     int audio_buf_index; /* in bytes */
252     int audio_write_buf_size;
253     int audio_volume;
254     int muted;
255     struct AudioParams audio_src;
256 #if CONFIG_AVFILTER
257     struct AudioParams audio_filter_src;
258 #endif
259     struct AudioParams audio_tgt;
260     struct SwrContext *swr_ctx;
261     int frame_drops_early;
262     int frame_drops_late;
263
264     enum ShowMode {
265         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
266     } show_mode;
267     int16_t sample_array[SAMPLE_ARRAY_SIZE];
268     int sample_array_index;
269     int last_i_start;
270     RDFTContext *rdft;
271     int rdft_bits;
272     FFTSample *rdft_data;
273     int xpos;
274     double last_vis_time;
275
276     int subtitle_stream;
277     AVStream *subtitle_st;
278     PacketQueue subtitleq;
279
280     double frame_timer;
281     double frame_last_returned_time;
282     double frame_last_filter_delay;
283     int video_stream;
284     AVStream *video_st;
285     PacketQueue videoq;
286     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
287 #if !CONFIG_AVFILTER
288     struct SwsContext *img_convert_ctx;
289 #endif
290     struct SwsContext *sub_convert_ctx;
291     SDL_Rect last_display_rect;
292     int eof;
293
294     char *filename;
295     int width, height, xleft, ytop;
296     int step;
297
298 #if CONFIG_AVFILTER
299     int vfilter_idx;
300     AVFilterContext *in_video_filter;   // the first filter in the video chain
301     AVFilterContext *out_video_filter;  // the last filter in the video chain
302     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
303     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
304     AVFilterGraph *agraph;              // audio filter graph
305 #endif
306
307     int last_video_stream, last_audio_stream, last_subtitle_stream;
308
309     SDL_cond *continue_read_thread;
310 } VideoState;
311
312 /* options specified by the user */
313 static AVInputFormat *file_iformat;
314 static const char *input_filename;
315 static const char *window_title;
316 static int fs_screen_width;
317 static int fs_screen_height;
318 static int default_width  = 640;
319 static int default_height = 480;
320 static int screen_width  = 0;
321 static int screen_height = 0;
322 static int audio_disable;
323 static int video_disable;
324 static int subtitle_disable;
325 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
326 static int seek_by_bytes = -1;
327 static int display_disable;
328 static int show_status = 1;
329 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
330 static int64_t start_time = AV_NOPTS_VALUE;
331 static int64_t duration = AV_NOPTS_VALUE;
332 static int fast = 0;
333 static int genpts = 0;
334 static int lowres = 0;
335 static int decoder_reorder_pts = -1;
336 static int autoexit;
337 static int exit_on_keydown;
338 static int exit_on_mousedown;
339 static int loop = 1;
340 static int framedrop = -1;
341 static int infinite_buffer = -1;
342 static enum ShowMode show_mode = SHOW_MODE_NONE;
343 static const char *audio_codec_name;
344 static const char *subtitle_codec_name;
345 static const char *video_codec_name;
346 double rdftspeed = 0.02;
347 static int64_t cursor_last_shown;
348 static int cursor_hidden = 0;
349 #if CONFIG_AVFILTER
350 static const char **vfilters_list = NULL;
351 static int nb_vfilters = 0;
352 static char *afilters = NULL;
353 #endif
354 static int autorotate = 1;
355
356 /* current context */
357 static int is_full_screen;
358 static int64_t audio_callback_time;
359
360 static AVPacket flush_pkt;
361
362 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
363 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
364
365 static SDL_Surface *screen;
366
367 #if CONFIG_AVFILTER
368 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
369 {
370     GROW_ARRAY(vfilters_list, nb_vfilters);
371     vfilters_list[nb_vfilters - 1] = arg;
372     return 0;
373 }
374 #endif
375
376 static inline
377 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
378                    enum AVSampleFormat fmt2, int64_t channel_count2)
379 {
380     /* If channel count == 1, planar and non-planar formats are the same */
381     if (channel_count1 == 1 && channel_count2 == 1)
382         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
383     else
384         return channel_count1 != channel_count2 || fmt1 != fmt2;
385 }
386
387 static inline
388 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
389 {
390     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
391         return channel_layout;
392     else
393         return 0;
394 }
395
396 static void free_picture(Frame *vp);
397
398 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
399 {
400     MyAVPacketList *pkt1;
401
402     if (q->abort_request)
403        return -1;
404
405     pkt1 = av_malloc(sizeof(MyAVPacketList));
406     if (!pkt1)
407         return -1;
408     pkt1->pkt = *pkt;
409     pkt1->next = NULL;
410     if (pkt == &flush_pkt)
411         q->serial++;
412     pkt1->serial = q->serial;
413
414     if (!q->last_pkt)
415         q->first_pkt = pkt1;
416     else
417         q->last_pkt->next = pkt1;
418     q->last_pkt = pkt1;
419     q->nb_packets++;
420     q->size += pkt1->pkt.size + sizeof(*pkt1);
421     /* XXX: should duplicate packet data in DV case */
422     SDL_CondSignal(q->cond);
423     return 0;
424 }
425
426 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
427 {
428     int ret;
429
430     SDL_LockMutex(q->mutex);
431     ret = packet_queue_put_private(q, pkt);
432     SDL_UnlockMutex(q->mutex);
433
434     if (pkt != &flush_pkt && ret < 0)
435         av_packet_unref(pkt);
436
437     return ret;
438 }
439
440 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
441 {
442     AVPacket pkt1, *pkt = &pkt1;
443     av_init_packet(pkt);
444     pkt->data = NULL;
445     pkt->size = 0;
446     pkt->stream_index = stream_index;
447     return packet_queue_put(q, pkt);
448 }
449
450 /* packet queue handling */
451 static int packet_queue_init(PacketQueue *q)
452 {
453     memset(q, 0, sizeof(PacketQueue));
454     q->mutex = SDL_CreateMutex();
455     if (!q->mutex) {
456         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
457         return AVERROR(ENOMEM);
458     }
459     q->cond = SDL_CreateCond();
460     if (!q->cond) {
461         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
462         return AVERROR(ENOMEM);
463     }
464     q->abort_request = 1;
465     return 0;
466 }
467
468 static void packet_queue_flush(PacketQueue *q)
469 {
470     MyAVPacketList *pkt, *pkt1;
471
472     SDL_LockMutex(q->mutex);
473     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
474         pkt1 = pkt->next;
475         av_packet_unref(&pkt->pkt);
476         av_freep(&pkt);
477     }
478     q->last_pkt = NULL;
479     q->first_pkt = NULL;
480     q->nb_packets = 0;
481     q->size = 0;
482     SDL_UnlockMutex(q->mutex);
483 }
484
485 static void packet_queue_destroy(PacketQueue *q)
486 {
487     packet_queue_flush(q);
488     SDL_DestroyMutex(q->mutex);
489     SDL_DestroyCond(q->cond);
490 }
491
492 static void packet_queue_abort(PacketQueue *q)
493 {
494     SDL_LockMutex(q->mutex);
495
496     q->abort_request = 1;
497
498     SDL_CondSignal(q->cond);
499
500     SDL_UnlockMutex(q->mutex);
501 }
502
503 static void packet_queue_start(PacketQueue *q)
504 {
505     SDL_LockMutex(q->mutex);
506     q->abort_request = 0;
507     packet_queue_put_private(q, &flush_pkt);
508     SDL_UnlockMutex(q->mutex);
509 }
510
511 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
512 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
513 {
514     MyAVPacketList *pkt1;
515     int ret;
516
517     SDL_LockMutex(q->mutex);
518
519     for (;;) {
520         if (q->abort_request) {
521             ret = -1;
522             break;
523         }
524
525         pkt1 = q->first_pkt;
526         if (pkt1) {
527             q->first_pkt = pkt1->next;
528             if (!q->first_pkt)
529                 q->last_pkt = NULL;
530             q->nb_packets--;
531             q->size -= pkt1->pkt.size + sizeof(*pkt1);
532             *pkt = pkt1->pkt;
533             if (serial)
534                 *serial = pkt1->serial;
535             av_free(pkt1);
536             ret = 1;
537             break;
538         } else if (!block) {
539             ret = 0;
540             break;
541         } else {
542             SDL_CondWait(q->cond, q->mutex);
543         }
544     }
545     SDL_UnlockMutex(q->mutex);
546     return ret;
547 }
548
549 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
550     memset(d, 0, sizeof(Decoder));
551     d->avctx = avctx;
552     d->queue = queue;
553     d->empty_queue_cond = empty_queue_cond;
554     d->start_pts = AV_NOPTS_VALUE;
555 }
556
557 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
558     int got_frame = 0;
559
560     do {
561         int ret = -1;
562
563         if (d->queue->abort_request)
564             return -1;
565
566         if (!d->packet_pending || d->queue->serial != d->pkt_serial) {
567             AVPacket pkt;
568             do {
569                 if (d->queue->nb_packets == 0)
570                     SDL_CondSignal(d->empty_queue_cond);
571                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
572                     return -1;
573                 if (pkt.data == flush_pkt.data) {
574                     avcodec_flush_buffers(d->avctx);
575                     d->finished = 0;
576                     d->next_pts = d->start_pts;
577                     d->next_pts_tb = d->start_pts_tb;
578                 }
579             } while (pkt.data == flush_pkt.data || d->queue->serial != d->pkt_serial);
580             av_packet_unref(&d->pkt);
581             d->pkt_temp = d->pkt = pkt;
582             d->packet_pending = 1;
583         }
584
585         switch (d->avctx->codec_type) {
586             case AVMEDIA_TYPE_VIDEO:
587                 ret = avcodec_decode_video2(d->avctx, frame, &got_frame, &d->pkt_temp);
588                 if (got_frame) {
589                     if (decoder_reorder_pts == -1) {
590                         frame->pts = av_frame_get_best_effort_timestamp(frame);
591                     } else if (decoder_reorder_pts) {
592                         frame->pts = frame->pkt_pts;
593                     } else {
594                         frame->pts = frame->pkt_dts;
595                     }
596                 }
597                 break;
598             case AVMEDIA_TYPE_AUDIO:
599                 ret = avcodec_decode_audio4(d->avctx, frame, &got_frame, &d->pkt_temp);
600                 if (got_frame) {
601                     AVRational tb = (AVRational){1, frame->sample_rate};
602                     if (frame->pts != AV_NOPTS_VALUE)
603                         frame->pts = av_rescale_q(frame->pts, d->avctx->time_base, tb);
604                     else if (frame->pkt_pts != AV_NOPTS_VALUE)
605                         frame->pts = av_rescale_q(frame->pkt_pts, av_codec_get_pkt_timebase(d->avctx), tb);
606                     else if (d->next_pts != AV_NOPTS_VALUE)
607                         frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
608                     if (frame->pts != AV_NOPTS_VALUE) {
609                         d->next_pts = frame->pts + frame->nb_samples;
610                         d->next_pts_tb = tb;
611                     }
612                 }
613                 break;
614             case AVMEDIA_TYPE_SUBTITLE:
615                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &d->pkt_temp);
616                 break;
617         }
618
619         if (ret < 0) {
620             d->packet_pending = 0;
621         } else {
622             d->pkt_temp.dts =
623             d->pkt_temp.pts = AV_NOPTS_VALUE;
624             if (d->pkt_temp.data) {
625                 if (d->avctx->codec_type != AVMEDIA_TYPE_AUDIO)
626                     ret = d->pkt_temp.size;
627                 d->pkt_temp.data += ret;
628                 d->pkt_temp.size -= ret;
629                 if (d->pkt_temp.size <= 0)
630                     d->packet_pending = 0;
631             } else {
632                 if (!got_frame) {
633                     d->packet_pending = 0;
634                     d->finished = d->pkt_serial;
635                 }
636             }
637         }
638     } while (!got_frame && !d->finished);
639
640     return got_frame;
641 }
642
643 static void decoder_destroy(Decoder *d) {
644     av_packet_unref(&d->pkt);
645 }
646
647 static void frame_queue_unref_item(Frame *vp)
648 {
649     int i;
650     for (i = 0; i < vp->sub.num_rects; i++) {
651         av_freep(&vp->subrects[i]->data[0]);
652         av_freep(&vp->subrects[i]);
653     }
654     av_freep(&vp->subrects);
655     av_frame_unref(vp->frame);
656     avsubtitle_free(&vp->sub);
657 }
658
659 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
660 {
661     int i;
662     memset(f, 0, sizeof(FrameQueue));
663     if (!(f->mutex = SDL_CreateMutex())) {
664         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
665         return AVERROR(ENOMEM);
666     }
667     if (!(f->cond = SDL_CreateCond())) {
668         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
669         return AVERROR(ENOMEM);
670     }
671     f->pktq = pktq;
672     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
673     f->keep_last = !!keep_last;
674     for (i = 0; i < f->max_size; i++)
675         if (!(f->queue[i].frame = av_frame_alloc()))
676             return AVERROR(ENOMEM);
677     return 0;
678 }
679
680 static void frame_queue_destory(FrameQueue *f)
681 {
682     int i;
683     for (i = 0; i < f->max_size; i++) {
684         Frame *vp = &f->queue[i];
685         frame_queue_unref_item(vp);
686         av_frame_free(&vp->frame);
687         free_picture(vp);
688     }
689     SDL_DestroyMutex(f->mutex);
690     SDL_DestroyCond(f->cond);
691 }
692
693 static void frame_queue_signal(FrameQueue *f)
694 {
695     SDL_LockMutex(f->mutex);
696     SDL_CondSignal(f->cond);
697     SDL_UnlockMutex(f->mutex);
698 }
699
700 static Frame *frame_queue_peek(FrameQueue *f)
701 {
702     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
703 }
704
705 static Frame *frame_queue_peek_next(FrameQueue *f)
706 {
707     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
708 }
709
710 static Frame *frame_queue_peek_last(FrameQueue *f)
711 {
712     return &f->queue[f->rindex];
713 }
714
715 static Frame *frame_queue_peek_writable(FrameQueue *f)
716 {
717     /* wait until we have space to put a new frame */
718     SDL_LockMutex(f->mutex);
719     while (f->size >= f->max_size &&
720            !f->pktq->abort_request) {
721         SDL_CondWait(f->cond, f->mutex);
722     }
723     SDL_UnlockMutex(f->mutex);
724
725     if (f->pktq->abort_request)
726         return NULL;
727
728     return &f->queue[f->windex];
729 }
730
731 static Frame *frame_queue_peek_readable(FrameQueue *f)
732 {
733     /* wait until we have a readable a new frame */
734     SDL_LockMutex(f->mutex);
735     while (f->size - f->rindex_shown <= 0 &&
736            !f->pktq->abort_request) {
737         SDL_CondWait(f->cond, f->mutex);
738     }
739     SDL_UnlockMutex(f->mutex);
740
741     if (f->pktq->abort_request)
742         return NULL;
743
744     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
745 }
746
747 static void frame_queue_push(FrameQueue *f)
748 {
749     if (++f->windex == f->max_size)
750         f->windex = 0;
751     SDL_LockMutex(f->mutex);
752     f->size++;
753     SDL_CondSignal(f->cond);
754     SDL_UnlockMutex(f->mutex);
755 }
756
757 static void frame_queue_next(FrameQueue *f)
758 {
759     if (f->keep_last && !f->rindex_shown) {
760         f->rindex_shown = 1;
761         return;
762     }
763     frame_queue_unref_item(&f->queue[f->rindex]);
764     if (++f->rindex == f->max_size)
765         f->rindex = 0;
766     SDL_LockMutex(f->mutex);
767     f->size--;
768     SDL_CondSignal(f->cond);
769     SDL_UnlockMutex(f->mutex);
770 }
771
772 /* jump back to the previous frame if available by resetting rindex_shown */
773 static int frame_queue_prev(FrameQueue *f)
774 {
775     int ret = f->rindex_shown;
776     f->rindex_shown = 0;
777     return ret;
778 }
779
780 /* return the number of undisplayed frames in the queue */
781 static int frame_queue_nb_remaining(FrameQueue *f)
782 {
783     return f->size - f->rindex_shown;
784 }
785
786 /* return last shown position */
787 static int64_t frame_queue_last_pos(FrameQueue *f)
788 {
789     Frame *fp = &f->queue[f->rindex];
790     if (f->rindex_shown && fp->serial == f->pktq->serial)
791         return fp->pos;
792     else
793         return -1;
794 }
795
796 static void decoder_abort(Decoder *d, FrameQueue *fq)
797 {
798     packet_queue_abort(d->queue);
799     frame_queue_signal(fq);
800     SDL_WaitThread(d->decoder_tid, NULL);
801     d->decoder_tid = NULL;
802     packet_queue_flush(d->queue);
803 }
804
805 static inline void fill_rectangle(SDL_Surface *screen,
806                                   int x, int y, int w, int h, int color, int update)
807 {
808     SDL_Rect rect;
809     rect.x = x;
810     rect.y = y;
811     rect.w = w;
812     rect.h = h;
813     SDL_FillRect(screen, &rect, color);
814     if (update && w > 0 && h > 0)
815         SDL_UpdateRect(screen, x, y, w, h);
816 }
817
818 /* draw only the border of a rectangle */
819 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
820 {
821     int w1, w2, h1, h2;
822
823     /* fill the background */
824     w1 = x;
825     if (w1 < 0)
826         w1 = 0;
827     w2 = width - (x + w);
828     if (w2 < 0)
829         w2 = 0;
830     h1 = y;
831     if (h1 < 0)
832         h1 = 0;
833     h2 = height - (y + h);
834     if (h2 < 0)
835         h2 = 0;
836     fill_rectangle(screen,
837                    xleft, ytop,
838                    w1, height,
839                    color, update);
840     fill_rectangle(screen,
841                    xleft + width - w2, ytop,
842                    w2, height,
843                    color, update);
844     fill_rectangle(screen,
845                    xleft + w1, ytop,
846                    width - w1 - w2, h1,
847                    color, update);
848     fill_rectangle(screen,
849                    xleft + w1, ytop + height - h2,
850                    width - w1 - w2, h2,
851                    color, update);
852 }
853
854 #define ALPHA_BLEND(a, oldp, newp, s)\
855 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
856
857
858
859 #define BPP 1
860
861 static void blend_subrect(uint8_t **data, int *linesize, const AVSubtitleRect *rect, int imgw, int imgh)
862 {
863     int x, y, Y, U, V, A;
864     uint8_t *lum, *cb, *cr;
865     int dstx, dsty, dstw, dsth;
866     const AVSubtitleRect *src = rect;
867
868     dstw = av_clip(rect->w, 0, imgw);
869     dsth = av_clip(rect->h, 0, imgh);
870     dstx = av_clip(rect->x, 0, imgw - dstw);
871     dsty = av_clip(rect->y, 0, imgh - dsth);
872     lum = data[0] + dstx + dsty * linesize[0];
873     cb  = data[1] + dstx/2 + (dsty >> 1) * linesize[1];
874     cr  = data[2] + dstx/2 + (dsty >> 1) * linesize[2];
875
876     for (y = 0; y<dsth; y++) {
877         for (x = 0; x<dstw; x++) {
878             Y = src->data[0][x + y*src->linesize[0]];
879             A = src->data[3][x + y*src->linesize[3]];
880             lum[0] = ALPHA_BLEND(A, lum[0], Y, 0);
881             lum++;
882         }
883         lum += linesize[0] - dstw;
884     }
885
886     for (y = 0; y<dsth/2; y++) {
887         for (x = 0; x<dstw/2; x++) {
888             U = src->data[1][x + y*src->linesize[1]];
889             V = src->data[2][x + y*src->linesize[2]];
890             A = src->data[3][2*x     +  2*y   *src->linesize[3]]
891               + src->data[3][2*x + 1 +  2*y   *src->linesize[3]]
892               + src->data[3][2*x + 1 + (2*y+1)*src->linesize[3]]
893               + src->data[3][2*x     + (2*y+1)*src->linesize[3]];
894             cb[0] = ALPHA_BLEND(A>>2, cb[0], U, 0);
895             cr[0] = ALPHA_BLEND(A>>2, cr[0], V, 0);
896             cb++;
897             cr++;
898         }
899         cb += linesize[1] - dstw/2;
900         cr += linesize[2] - dstw/2;
901     }
902 }
903
904 static void free_picture(Frame *vp)
905 {
906      if (vp->bmp) {
907          SDL_FreeYUVOverlay(vp->bmp);
908          vp->bmp = NULL;
909      }
910 }
911
912 static void calculate_display_rect(SDL_Rect *rect,
913                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
914                                    int pic_width, int pic_height, AVRational pic_sar)
915 {
916     float aspect_ratio;
917     int width, height, x, y;
918
919     if (pic_sar.num == 0)
920         aspect_ratio = 0;
921     else
922         aspect_ratio = av_q2d(pic_sar);
923
924     if (aspect_ratio <= 0.0)
925         aspect_ratio = 1.0;
926     aspect_ratio *= (float)pic_width / (float)pic_height;
927
928     /* XXX: we suppose the screen has a 1.0 pixel ratio */
929     height = scr_height;
930     width = lrint(height * aspect_ratio) & ~1;
931     if (width > scr_width) {
932         width = scr_width;
933         height = lrint(width / aspect_ratio) & ~1;
934     }
935     x = (scr_width - width) / 2;
936     y = (scr_height - height) / 2;
937     rect->x = scr_xleft + x;
938     rect->y = scr_ytop  + y;
939     rect->w = FFMAX(width,  1);
940     rect->h = FFMAX(height, 1);
941 }
942
943 static void video_image_display(VideoState *is)
944 {
945     Frame *vp;
946     Frame *sp;
947     SDL_Rect rect;
948     int i;
949
950     vp = frame_queue_peek(&is->pictq);
951     if (vp->bmp) {
952         if (is->subtitle_st) {
953             if (frame_queue_nb_remaining(&is->subpq) > 0) {
954                 sp = frame_queue_peek(&is->subpq);
955
956                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
957                     uint8_t *data[4];
958                     int linesize[4];
959
960                     SDL_LockYUVOverlay (vp->bmp);
961
962                     data[0] = vp->bmp->pixels[0];
963                     data[1] = vp->bmp->pixels[2];
964                     data[2] = vp->bmp->pixels[1];
965
966                     linesize[0] = vp->bmp->pitches[0];
967                     linesize[1] = vp->bmp->pitches[2];
968                     linesize[2] = vp->bmp->pitches[1];
969
970                     for (i = 0; i < sp->sub.num_rects; i++)
971                         blend_subrect(data, linesize, sp->subrects[i],
972                                       vp->bmp->w, vp->bmp->h);
973
974                     SDL_UnlockYUVOverlay (vp->bmp);
975                 }
976             }
977         }
978
979         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
980
981         SDL_DisplayYUVOverlay(vp->bmp, &rect);
982
983         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) {
984             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
985             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
986             is->last_display_rect = rect;
987         }
988     }
989 }
990
991 static inline int compute_mod(int a, int b)
992 {
993     return a < 0 ? a%b + b : a%b;
994 }
995
996 static void video_audio_display(VideoState *s)
997 {
998     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
999     int ch, channels, h, h2, bgcolor, fgcolor;
1000     int64_t time_diff;
1001     int rdft_bits, nb_freq;
1002
1003     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1004         ;
1005     nb_freq = 1 << (rdft_bits - 1);
1006
1007     /* compute display index : center on currently output samples */
1008     channels = s->audio_tgt.channels;
1009     nb_display_channels = channels;
1010     if (!s->paused) {
1011         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1012         n = 2 * channels;
1013         delay = s->audio_write_buf_size;
1014         delay /= n;
1015
1016         /* to be more precise, we take into account the time spent since
1017            the last buffer computation */
1018         if (audio_callback_time) {
1019             time_diff = av_gettime_relative() - audio_callback_time;
1020             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1021         }
1022
1023         delay += 2 * data_used;
1024         if (delay < data_used)
1025             delay = data_used;
1026
1027         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1028         if (s->show_mode == SHOW_MODE_WAVES) {
1029             h = INT_MIN;
1030             for (i = 0; i < 1000; i += channels) {
1031                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1032                 int a = s->sample_array[idx];
1033                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1034                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1035                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1036                 int score = a - d;
1037                 if (h < score && (b ^ c) < 0) {
1038                     h = score;
1039                     i_start = idx;
1040                 }
1041             }
1042         }
1043
1044         s->last_i_start = i_start;
1045     } else {
1046         i_start = s->last_i_start;
1047     }
1048
1049     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1050     if (s->show_mode == SHOW_MODE_WAVES) {
1051         fill_rectangle(screen,
1052                        s->xleft, s->ytop, s->width, s->height,
1053                        bgcolor, 0);
1054
1055         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
1056
1057         /* total height for one channel */
1058         h = s->height / nb_display_channels;
1059         /* graph height / 2 */
1060         h2 = (h * 9) / 20;
1061         for (ch = 0; ch < nb_display_channels; ch++) {
1062             i = i_start + ch;
1063             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1064             for (x = 0; x < s->width; x++) {
1065                 y = (s->sample_array[i] * h2) >> 15;
1066                 if (y < 0) {
1067                     y = -y;
1068                     ys = y1 - y;
1069                 } else {
1070                     ys = y1;
1071                 }
1072                 fill_rectangle(screen,
1073                                s->xleft + x, ys, 1, y,
1074                                fgcolor, 0);
1075                 i += channels;
1076                 if (i >= SAMPLE_ARRAY_SIZE)
1077                     i -= SAMPLE_ARRAY_SIZE;
1078             }
1079         }
1080
1081         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
1082
1083         for (ch = 1; ch < nb_display_channels; ch++) {
1084             y = s->ytop + ch * h;
1085             fill_rectangle(screen,
1086                            s->xleft, y, s->width, 1,
1087                            fgcolor, 0);
1088         }
1089         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
1090     } else {
1091         nb_display_channels= FFMIN(nb_display_channels, 2);
1092         if (rdft_bits != s->rdft_bits) {
1093             av_rdft_end(s->rdft);
1094             av_free(s->rdft_data);
1095             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1096             s->rdft_bits = rdft_bits;
1097             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1098         }
1099         if (!s->rdft || !s->rdft_data){
1100             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1101             s->show_mode = SHOW_MODE_WAVES;
1102         } else {
1103             FFTSample *data[2];
1104             for (ch = 0; ch < nb_display_channels; ch++) {
1105                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1106                 i = i_start + ch;
1107                 for (x = 0; x < 2 * nb_freq; x++) {
1108                     double w = (x-nb_freq) * (1.0 / nb_freq);
1109                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1110                     i += channels;
1111                     if (i >= SAMPLE_ARRAY_SIZE)
1112                         i -= SAMPLE_ARRAY_SIZE;
1113                 }
1114                 av_rdft_calc(s->rdft, data[ch]);
1115             }
1116             /* Least efficient way to do this, we should of course
1117              * directly access it but it is more than fast enough. */
1118             for (y = 0; y < s->height; y++) {
1119                 double w = 1 / sqrt(nb_freq);
1120                 int a = sqrt(w * hypot(data[0][2 * y + 0], data[0][2 * y + 1]));
1121                 int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1122                                                     : a;
1123                 a = FFMIN(a, 255);
1124                 b = FFMIN(b, 255);
1125                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1126
1127                 fill_rectangle(screen,
1128                             s->xpos, s->height-y, 1, 1,
1129                             fgcolor, 0);
1130             }
1131         }
1132         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1133         if (!s->paused)
1134             s->xpos++;
1135         if (s->xpos >= s->width)
1136             s->xpos= s->xleft;
1137     }
1138 }
1139
1140 static void stream_component_close(VideoState *is, int stream_index)
1141 {
1142     AVFormatContext *ic = is->ic;
1143     AVCodecContext *avctx;
1144
1145     if (stream_index < 0 || stream_index >= ic->nb_streams)
1146         return;
1147     avctx = ic->streams[stream_index]->codec;
1148
1149     switch (avctx->codec_type) {
1150     case AVMEDIA_TYPE_AUDIO:
1151         decoder_abort(&is->auddec, &is->sampq);
1152         SDL_CloseAudio();
1153         decoder_destroy(&is->auddec);
1154         swr_free(&is->swr_ctx);
1155         av_freep(&is->audio_buf1);
1156         is->audio_buf1_size = 0;
1157         is->audio_buf = NULL;
1158
1159         if (is->rdft) {
1160             av_rdft_end(is->rdft);
1161             av_freep(&is->rdft_data);
1162             is->rdft = NULL;
1163             is->rdft_bits = 0;
1164         }
1165         break;
1166     case AVMEDIA_TYPE_VIDEO:
1167         decoder_abort(&is->viddec, &is->pictq);
1168         decoder_destroy(&is->viddec);
1169         break;
1170     case AVMEDIA_TYPE_SUBTITLE:
1171         decoder_abort(&is->subdec, &is->subpq);
1172         decoder_destroy(&is->subdec);
1173         break;
1174     default:
1175         break;
1176     }
1177
1178     ic->streams[stream_index]->discard = AVDISCARD_ALL;
1179     avcodec_close(avctx);
1180     switch (avctx->codec_type) {
1181     case AVMEDIA_TYPE_AUDIO:
1182         is->audio_st = NULL;
1183         is->audio_stream = -1;
1184         break;
1185     case AVMEDIA_TYPE_VIDEO:
1186         is->video_st = NULL;
1187         is->video_stream = -1;
1188         break;
1189     case AVMEDIA_TYPE_SUBTITLE:
1190         is->subtitle_st = NULL;
1191         is->subtitle_stream = -1;
1192         break;
1193     default:
1194         break;
1195     }
1196 }
1197
1198 static void stream_close(VideoState *is)
1199 {
1200     /* XXX: use a special url_shutdown call to abort parse cleanly */
1201     is->abort_request = 1;
1202     SDL_WaitThread(is->read_tid, NULL);
1203
1204     /* close each stream */
1205     if (is->audio_stream >= 0)
1206         stream_component_close(is, is->audio_stream);
1207     if (is->video_stream >= 0)
1208         stream_component_close(is, is->video_stream);
1209     if (is->subtitle_stream >= 0)
1210         stream_component_close(is, is->subtitle_stream);
1211
1212     avformat_close_input(&is->ic);
1213
1214     packet_queue_destroy(&is->videoq);
1215     packet_queue_destroy(&is->audioq);
1216     packet_queue_destroy(&is->subtitleq);
1217
1218     /* free all pictures */
1219     frame_queue_destory(&is->pictq);
1220     frame_queue_destory(&is->sampq);
1221     frame_queue_destory(&is->subpq);
1222     SDL_DestroyCond(is->continue_read_thread);
1223 #if !CONFIG_AVFILTER
1224     sws_freeContext(is->img_convert_ctx);
1225 #endif
1226     sws_freeContext(is->sub_convert_ctx);
1227     av_free(is->filename);
1228     av_free(is);
1229 }
1230
1231 static void do_exit(VideoState *is)
1232 {
1233     if (is) {
1234         stream_close(is);
1235     }
1236     av_lockmgr_register(NULL);
1237     uninit_opts();
1238 #if CONFIG_AVFILTER
1239     av_freep(&vfilters_list);
1240 #endif
1241     avformat_network_deinit();
1242     if (show_status)
1243         printf("\n");
1244     SDL_Quit();
1245     av_log(NULL, AV_LOG_QUIET, "%s", "");
1246     exit(0);
1247 }
1248
1249 static void sigterm_handler(int sig)
1250 {
1251     exit(123);
1252 }
1253
1254 static void set_default_window_size(int width, int height, AVRational sar)
1255 {
1256     SDL_Rect rect;
1257     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1258     default_width  = rect.w;
1259     default_height = rect.h;
1260 }
1261
1262 static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
1263 {
1264     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1265     int w,h;
1266
1267     if (is_full_screen) flags |= SDL_FULLSCREEN;
1268     else                flags |= SDL_RESIZABLE;
1269
1270     if (vp && vp->width)
1271         set_default_window_size(vp->width, vp->height, vp->sar);
1272
1273     if (is_full_screen && fs_screen_width) {
1274         w = fs_screen_width;
1275         h = fs_screen_height;
1276     } else if (!is_full_screen && screen_width) {
1277         w = screen_width;
1278         h = screen_height;
1279     } else {
1280         w = default_width;
1281         h = default_height;
1282     }
1283     w = FFMIN(16383, w);
1284     if (screen && is->width == screen->w && screen->w == w
1285        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1286         return 0;
1287     screen = SDL_SetVideoMode(w, h, 0, flags);
1288     if (!screen) {
1289         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1290         do_exit(is);
1291     }
1292     if (!window_title)
1293         window_title = input_filename;
1294     SDL_WM_SetCaption(window_title, window_title);
1295
1296     is->width  = screen->w;
1297     is->height = screen->h;
1298
1299     return 0;
1300 }
1301
1302 /* display the current picture, if any */
1303 static void video_display(VideoState *is)
1304 {
1305     if (!screen)
1306         video_open(is, 0, NULL);
1307     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1308         video_audio_display(is);
1309     else if (is->video_st)
1310         video_image_display(is);
1311 }
1312
1313 static double get_clock(Clock *c)
1314 {
1315     if (*c->queue_serial != c->serial)
1316         return NAN;
1317     if (c->paused) {
1318         return c->pts;
1319     } else {
1320         double time = av_gettime_relative() / 1000000.0;
1321         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1322     }
1323 }
1324
1325 static void set_clock_at(Clock *c, double pts, int serial, double time)
1326 {
1327     c->pts = pts;
1328     c->last_updated = time;
1329     c->pts_drift = c->pts - time;
1330     c->serial = serial;
1331 }
1332
1333 static void set_clock(Clock *c, double pts, int serial)
1334 {
1335     double time = av_gettime_relative() / 1000000.0;
1336     set_clock_at(c, pts, serial, time);
1337 }
1338
1339 static void set_clock_speed(Clock *c, double speed)
1340 {
1341     set_clock(c, get_clock(c), c->serial);
1342     c->speed = speed;
1343 }
1344
1345 static void init_clock(Clock *c, int *queue_serial)
1346 {
1347     c->speed = 1.0;
1348     c->paused = 0;
1349     c->queue_serial = queue_serial;
1350     set_clock(c, NAN, -1);
1351 }
1352
1353 static void sync_clock_to_slave(Clock *c, Clock *slave)
1354 {
1355     double clock = get_clock(c);
1356     double slave_clock = get_clock(slave);
1357     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1358         set_clock(c, slave_clock, slave->serial);
1359 }
1360
1361 static int get_master_sync_type(VideoState *is) {
1362     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1363         if (is->video_st)
1364             return AV_SYNC_VIDEO_MASTER;
1365         else
1366             return AV_SYNC_AUDIO_MASTER;
1367     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1368         if (is->audio_st)
1369             return AV_SYNC_AUDIO_MASTER;
1370         else
1371             return AV_SYNC_EXTERNAL_CLOCK;
1372     } else {
1373         return AV_SYNC_EXTERNAL_CLOCK;
1374     }
1375 }
1376
1377 /* get the current master clock value */
1378 static double get_master_clock(VideoState *is)
1379 {
1380     double val;
1381
1382     switch (get_master_sync_type(is)) {
1383         case AV_SYNC_VIDEO_MASTER:
1384             val = get_clock(&is->vidclk);
1385             break;
1386         case AV_SYNC_AUDIO_MASTER:
1387             val = get_clock(&is->audclk);
1388             break;
1389         default:
1390             val = get_clock(&is->extclk);
1391             break;
1392     }
1393     return val;
1394 }
1395
1396 static void check_external_clock_speed(VideoState *is) {
1397    if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
1398        is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
1399        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1400    } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
1401               (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
1402        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1403    } else {
1404        double speed = is->extclk.speed;
1405        if (speed != 1.0)
1406            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1407    }
1408 }
1409
1410 /* seek in the stream */
1411 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1412 {
1413     if (!is->seek_req) {
1414         is->seek_pos = pos;
1415         is->seek_rel = rel;
1416         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1417         if (seek_by_bytes)
1418             is->seek_flags |= AVSEEK_FLAG_BYTE;
1419         is->seek_req = 1;
1420         SDL_CondSignal(is->continue_read_thread);
1421     }
1422 }
1423
1424 /* pause or resume the video */
1425 static void stream_toggle_pause(VideoState *is)
1426 {
1427     if (is->paused) {
1428         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1429         if (is->read_pause_return != AVERROR(ENOSYS)) {
1430             is->vidclk.paused = 0;
1431         }
1432         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1433     }
1434     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1435     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1436 }
1437
1438 static void toggle_pause(VideoState *is)
1439 {
1440     stream_toggle_pause(is);
1441     is->step = 0;
1442 }
1443
1444 static void toggle_mute(VideoState *is)
1445 {
1446     is->muted = !is->muted;
1447 }
1448
1449 static void update_volume(VideoState *is, int sign, int step)
1450 {
1451     is->audio_volume = av_clip(is->audio_volume + sign * step, 0, SDL_MIX_MAXVOLUME);
1452 }
1453
1454 static void step_to_next_frame(VideoState *is)
1455 {
1456     /* if the stream is paused unpause it, then step */
1457     if (is->paused)
1458         stream_toggle_pause(is);
1459     is->step = 1;
1460 }
1461
1462 static double compute_target_delay(double delay, VideoState *is)
1463 {
1464     double sync_threshold, diff = 0;
1465
1466     /* update delay to follow master synchronisation source */
1467     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1468         /* if video is slave, we try to correct big delays by
1469            duplicating or deleting a frame */
1470         diff = get_clock(&is->vidclk) - get_master_clock(is);
1471
1472         /* skip or repeat frame. We take into account the
1473            delay to compute the threshold. I still don't know
1474            if it is the best guess */
1475         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1476         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1477             if (diff <= -sync_threshold)
1478                 delay = FFMAX(0, delay + diff);
1479             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1480                 delay = delay + diff;
1481             else if (diff >= sync_threshold)
1482                 delay = 2 * delay;
1483         }
1484     }
1485
1486     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1487             delay, -diff);
1488
1489     return delay;
1490 }
1491
1492 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1493     if (vp->serial == nextvp->serial) {
1494         double duration = nextvp->pts - vp->pts;
1495         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1496             return vp->duration;
1497         else
1498             return duration;
1499     } else {
1500         return 0.0;
1501     }
1502 }
1503
1504 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1505     /* update current video pts */
1506     set_clock(&is->vidclk, pts, serial);
1507     sync_clock_to_slave(&is->extclk, &is->vidclk);
1508 }
1509
1510 /* called to display each frame */
1511 static void video_refresh(void *opaque, double *remaining_time)
1512 {
1513     VideoState *is = opaque;
1514     double time;
1515
1516     Frame *sp, *sp2;
1517
1518     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1519         check_external_clock_speed(is);
1520
1521     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1522         time = av_gettime_relative() / 1000000.0;
1523         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1524             video_display(is);
1525             is->last_vis_time = time;
1526         }
1527         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1528     }
1529
1530     if (is->video_st) {
1531         int redisplay = 0;
1532         if (is->force_refresh)
1533             redisplay = frame_queue_prev(&is->pictq);
1534 retry:
1535         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1536             // nothing to do, no picture to display in the queue
1537         } else {
1538             double last_duration, duration, delay;
1539             Frame *vp, *lastvp;
1540
1541             /* dequeue the picture */
1542             lastvp = frame_queue_peek_last(&is->pictq);
1543             vp = frame_queue_peek(&is->pictq);
1544
1545             if (vp->serial != is->videoq.serial) {
1546                 frame_queue_next(&is->pictq);
1547                 redisplay = 0;
1548                 goto retry;
1549             }
1550
1551             if (lastvp->serial != vp->serial && !redisplay)
1552                 is->frame_timer = av_gettime_relative() / 1000000.0;
1553
1554             if (is->paused)
1555                 goto display;
1556
1557             /* compute nominal last_duration */
1558             last_duration = vp_duration(is, lastvp, vp);
1559             if (redisplay)
1560                 delay = 0.0;
1561             else
1562                 delay = compute_target_delay(last_duration, is);
1563
1564             time= av_gettime_relative()/1000000.0;
1565             if (time < is->frame_timer + delay && !redisplay) {
1566                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1567                 return;
1568             }
1569
1570             is->frame_timer += delay;
1571             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1572                 is->frame_timer = time;
1573
1574             SDL_LockMutex(is->pictq.mutex);
1575             if (!redisplay && !isnan(vp->pts))
1576                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1577             SDL_UnlockMutex(is->pictq.mutex);
1578
1579             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1580                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1581                 duration = vp_duration(is, vp, nextvp);
1582                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1583                     if (!redisplay)
1584                         is->frame_drops_late++;
1585                     frame_queue_next(&is->pictq);
1586                     redisplay = 0;
1587                     goto retry;
1588                 }
1589             }
1590
1591             if (is->subtitle_st) {
1592                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1593                         sp = frame_queue_peek(&is->subpq);
1594
1595                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1596                             sp2 = frame_queue_peek_next(&is->subpq);
1597                         else
1598                             sp2 = NULL;
1599
1600                         if (sp->serial != is->subtitleq.serial
1601                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1602                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1603                         {
1604                             frame_queue_next(&is->subpq);
1605                         } else {
1606                             break;
1607                         }
1608                     }
1609             }
1610
1611 display:
1612             /* display picture */
1613             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1614                 video_display(is);
1615
1616             frame_queue_next(&is->pictq);
1617
1618             if (is->step && !is->paused)
1619                 stream_toggle_pause(is);
1620         }
1621     }
1622     is->force_refresh = 0;
1623     if (show_status) {
1624         static int64_t last_time;
1625         int64_t cur_time;
1626         int aqsize, vqsize, sqsize;
1627         double av_diff;
1628
1629         cur_time = av_gettime_relative();
1630         if (!last_time || (cur_time - last_time) >= 30000) {
1631             aqsize = 0;
1632             vqsize = 0;
1633             sqsize = 0;
1634             if (is->audio_st)
1635                 aqsize = is->audioq.size;
1636             if (is->video_st)
1637                 vqsize = is->videoq.size;
1638             if (is->subtitle_st)
1639                 sqsize = is->subtitleq.size;
1640             av_diff = 0;
1641             if (is->audio_st && is->video_st)
1642                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1643             else if (is->video_st)
1644                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1645             else if (is->audio_st)
1646                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1647             av_log(NULL, AV_LOG_INFO,
1648                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1649                    get_master_clock(is),
1650                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1651                    av_diff,
1652                    is->frame_drops_early + is->frame_drops_late,
1653                    aqsize / 1024,
1654                    vqsize / 1024,
1655                    sqsize,
1656                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1657                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1658             fflush(stdout);
1659             last_time = cur_time;
1660         }
1661     }
1662 }
1663
1664 /* allocate a picture (needs to do that in main thread to avoid
1665    potential locking problems */
1666 static void alloc_picture(VideoState *is)
1667 {
1668     Frame *vp;
1669     int64_t bufferdiff;
1670
1671     vp = &is->pictq.queue[is->pictq.windex];
1672
1673     free_picture(vp);
1674
1675     video_open(is, 0, vp);
1676
1677     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1678                                    SDL_YV12_OVERLAY,
1679                                    screen);
1680     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1681     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1682         /* SDL allocates a buffer smaller than requested if the video
1683          * overlay hardware is unable to support the requested size. */
1684         av_log(NULL, AV_LOG_FATAL,
1685                "Error: the video system does not support an image\n"
1686                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1687                         "to reduce the image size.\n", vp->width, vp->height );
1688         do_exit(is);
1689     }
1690
1691     SDL_LockMutex(is->pictq.mutex);
1692     vp->allocated = 1;
1693     SDL_CondSignal(is->pictq.cond);
1694     SDL_UnlockMutex(is->pictq.mutex);
1695 }
1696
1697 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1698     int i, width, height;
1699     Uint8 *p, *maxp;
1700     for (i = 0; i < 3; i++) {
1701         width  = bmp->w;
1702         height = bmp->h;
1703         if (i > 0) {
1704             width  >>= 1;
1705             height >>= 1;
1706         }
1707         if (bmp->pitches[i] > width) {
1708             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1709             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1710                 *(p+1) = *p;
1711         }
1712     }
1713 }
1714
1715 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1716 {
1717     Frame *vp;
1718
1719 #if defined(DEBUG_SYNC) && 0
1720     printf("frame_type=%c pts=%0.3f\n",
1721            av_get_picture_type_char(src_frame->pict_type), pts);
1722 #endif
1723
1724     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1725         return -1;
1726
1727     vp->sar = src_frame->sample_aspect_ratio;
1728
1729     /* alloc or resize hardware picture buffer */
1730     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1731         vp->width  != src_frame->width ||
1732         vp->height != src_frame->height) {
1733         SDL_Event event;
1734
1735         vp->allocated  = 0;
1736         vp->reallocate = 0;
1737         vp->width = src_frame->width;
1738         vp->height = src_frame->height;
1739
1740         /* the allocation must be done in the main thread to avoid
1741            locking problems. */
1742         event.type = FF_ALLOC_EVENT;
1743         event.user.data1 = is;
1744         SDL_PushEvent(&event);
1745
1746         /* wait until the picture is allocated */
1747         SDL_LockMutex(is->pictq.mutex);
1748         while (!vp->allocated && !is->videoq.abort_request) {
1749             SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1750         }
1751         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1752         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1753             while (!vp->allocated && !is->abort_request) {
1754                 SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1755             }
1756         }
1757         SDL_UnlockMutex(is->pictq.mutex);
1758
1759         if (is->videoq.abort_request)
1760             return -1;
1761     }
1762
1763     /* if the frame is not skipped, then display it */
1764     if (vp->bmp) {
1765         uint8_t *data[4];
1766         int linesize[4];
1767
1768         /* get a pointer on the bitmap */
1769         SDL_LockYUVOverlay (vp->bmp);
1770
1771         data[0] = vp->bmp->pixels[0];
1772         data[1] = vp->bmp->pixels[2];
1773         data[2] = vp->bmp->pixels[1];
1774
1775         linesize[0] = vp->bmp->pitches[0];
1776         linesize[1] = vp->bmp->pitches[2];
1777         linesize[2] = vp->bmp->pitches[1];
1778
1779 #if CONFIG_AVFILTER
1780         // FIXME use direct rendering
1781         av_image_copy(data, linesize, (const uint8_t **)src_frame->data, src_frame->linesize,
1782                         src_frame->format, vp->width, vp->height);
1783 #else
1784         {
1785             AVDictionaryEntry *e = av_dict_get(sws_dict, "sws_flags", NULL, 0);
1786             if (e) {
1787                 const AVClass *class = sws_get_class();
1788                 const AVOption    *o = av_opt_find(&class, "sws_flags", NULL, 0,
1789                                                    AV_OPT_SEARCH_FAKE_OBJ);
1790                 int ret = av_opt_eval_flags(&class, o, e->value, &sws_flags);
1791                 if (ret < 0)
1792                     exit(1);
1793             }
1794         }
1795
1796         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1797             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1798             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1799         if (!is->img_convert_ctx) {
1800             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1801             exit(1);
1802         }
1803         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1804                   0, vp->height, data, linesize);
1805 #endif
1806         /* workaround SDL PITCH_WORKAROUND */
1807         duplicate_right_border_pixels(vp->bmp);
1808         /* update the bitmap content */
1809         SDL_UnlockYUVOverlay(vp->bmp);
1810
1811         vp->pts = pts;
1812         vp->duration = duration;
1813         vp->pos = pos;
1814         vp->serial = serial;
1815
1816         /* now we can update the picture count */
1817         frame_queue_push(&is->pictq);
1818     }
1819     return 0;
1820 }
1821
1822 static int get_video_frame(VideoState *is, AVFrame *frame)
1823 {
1824     int got_picture;
1825
1826     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1827         return -1;
1828
1829     if (got_picture) {
1830         double dpts = NAN;
1831
1832         if (frame->pts != AV_NOPTS_VALUE)
1833             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1834
1835         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1836
1837         is->viddec_width  = frame->width;
1838         is->viddec_height = frame->height;
1839
1840         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1841             if (frame->pts != AV_NOPTS_VALUE) {
1842                 double diff = dpts - get_master_clock(is);
1843                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1844                     diff - is->frame_last_filter_delay < 0 &&
1845                     is->viddec.pkt_serial == is->vidclk.serial &&
1846                     is->videoq.nb_packets) {
1847                     is->frame_drops_early++;
1848                     av_frame_unref(frame);
1849                     got_picture = 0;
1850                 }
1851             }
1852         }
1853     }
1854
1855     return got_picture;
1856 }
1857
1858 #if CONFIG_AVFILTER
1859 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1860                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1861 {
1862     int ret, i;
1863     int nb_filters = graph->nb_filters;
1864     AVFilterInOut *outputs = NULL, *inputs = NULL;
1865
1866     if (filtergraph) {
1867         outputs = avfilter_inout_alloc();
1868         inputs  = avfilter_inout_alloc();
1869         if (!outputs || !inputs) {
1870             ret = AVERROR(ENOMEM);
1871             goto fail;
1872         }
1873
1874         outputs->name       = av_strdup("in");
1875         outputs->filter_ctx = source_ctx;
1876         outputs->pad_idx    = 0;
1877         outputs->next       = NULL;
1878
1879         inputs->name        = av_strdup("out");
1880         inputs->filter_ctx  = sink_ctx;
1881         inputs->pad_idx     = 0;
1882         inputs->next        = NULL;
1883
1884         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1885             goto fail;
1886     } else {
1887         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1888             goto fail;
1889     }
1890
1891     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1892     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1893         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1894
1895     ret = avfilter_graph_config(graph, NULL);
1896 fail:
1897     avfilter_inout_free(&outputs);
1898     avfilter_inout_free(&inputs);
1899     return ret;
1900 }
1901
1902 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1903 {
1904     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1905     char sws_flags_str[512] = "";
1906     char buffersrc_args[256];
1907     int ret;
1908     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1909     AVCodecContext *codec = is->video_st->codec;
1910     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1911     AVDictionaryEntry *e = NULL;
1912
1913     while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
1914         if (!strcmp(e->key, "sws_flags")) {
1915             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
1916         } else
1917             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
1918     }
1919     if (strlen(sws_flags_str))
1920         sws_flags_str[strlen(sws_flags_str)-1] = '\0';
1921
1922     graph->scale_sws_opts = av_strdup(sws_flags_str);
1923
1924     snprintf(buffersrc_args, sizeof(buffersrc_args),
1925              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1926              frame->width, frame->height, frame->format,
1927              is->video_st->time_base.num, is->video_st->time_base.den,
1928              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1929     if (fr.num && fr.den)
1930         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1931
1932     if ((ret = avfilter_graph_create_filter(&filt_src,
1933                                             avfilter_get_by_name("buffer"),
1934                                             "ffplay_buffer", buffersrc_args, NULL,
1935                                             graph)) < 0)
1936         goto fail;
1937
1938     ret = avfilter_graph_create_filter(&filt_out,
1939                                        avfilter_get_by_name("buffersink"),
1940                                        "ffplay_buffersink", NULL, NULL, graph);
1941     if (ret < 0)
1942         goto fail;
1943
1944     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1945         goto fail;
1946
1947     last_filter = filt_out;
1948
1949 /* Note: this macro adds a filter before the lastly added filter, so the
1950  * processing order of the filters is in reverse */
1951 #define INSERT_FILT(name, arg) do {                                          \
1952     AVFilterContext *filt_ctx;                                               \
1953                                                                              \
1954     ret = avfilter_graph_create_filter(&filt_ctx,                            \
1955                                        avfilter_get_by_name(name),           \
1956                                        "ffplay_" name, arg, NULL, graph);    \
1957     if (ret < 0)                                                             \
1958         goto fail;                                                           \
1959                                                                              \
1960     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
1961     if (ret < 0)                                                             \
1962         goto fail;                                                           \
1963                                                                              \
1964     last_filter = filt_ctx;                                                  \
1965 } while (0)
1966
1967     /* SDL YUV code is not handling odd width/height for some driver
1968      * combinations, therefore we crop the picture to an even width/height. */
1969     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
1970
1971     if (autorotate) {
1972         double theta  = get_rotation(is->video_st);
1973
1974         if (fabs(theta - 90) < 1.0) {
1975             INSERT_FILT("transpose", "clock");
1976         } else if (fabs(theta - 180) < 1.0) {
1977             INSERT_FILT("hflip", NULL);
1978             INSERT_FILT("vflip", NULL);
1979         } else if (fabs(theta - 270) < 1.0) {
1980             INSERT_FILT("transpose", "cclock");
1981         } else if (fabs(theta) > 1.0) {
1982             char rotate_buf[64];
1983             snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
1984             INSERT_FILT("rotate", rotate_buf);
1985         }
1986     }
1987
1988     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1989         goto fail;
1990
1991     is->in_video_filter  = filt_src;
1992     is->out_video_filter = filt_out;
1993
1994 fail:
1995     return ret;
1996 }
1997
1998 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1999 {
2000     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
2001     int sample_rates[2] = { 0, -1 };
2002     int64_t channel_layouts[2] = { 0, -1 };
2003     int channels[2] = { 0, -1 };
2004     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
2005     char aresample_swr_opts[512] = "";
2006     AVDictionaryEntry *e = NULL;
2007     char asrc_args[256];
2008     int ret;
2009
2010     avfilter_graph_free(&is->agraph);
2011     if (!(is->agraph = avfilter_graph_alloc()))
2012         return AVERROR(ENOMEM);
2013
2014     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
2015         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
2016     if (strlen(aresample_swr_opts))
2017         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
2018     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
2019
2020     ret = snprintf(asrc_args, sizeof(asrc_args),
2021                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
2022                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
2023                    is->audio_filter_src.channels,
2024                    1, is->audio_filter_src.freq);
2025     if (is->audio_filter_src.channel_layout)
2026         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
2027                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
2028
2029     ret = avfilter_graph_create_filter(&filt_asrc,
2030                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
2031                                        asrc_args, NULL, is->agraph);
2032     if (ret < 0)
2033         goto end;
2034
2035
2036     ret = avfilter_graph_create_filter(&filt_asink,
2037                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2038                                        NULL, NULL, is->agraph);
2039     if (ret < 0)
2040         goto end;
2041
2042     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2043         goto end;
2044     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2045         goto end;
2046
2047     if (force_output_format) {
2048         channel_layouts[0] = is->audio_tgt.channel_layout;
2049         channels       [0] = is->audio_tgt.channels;
2050         sample_rates   [0] = is->audio_tgt.freq;
2051         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2052             goto end;
2053         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2054             goto end;
2055         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2056             goto end;
2057         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2058             goto end;
2059     }
2060
2061
2062     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2063         goto end;
2064
2065     is->in_audio_filter  = filt_asrc;
2066     is->out_audio_filter = filt_asink;
2067
2068 end:
2069     if (ret < 0)
2070         avfilter_graph_free(&is->agraph);
2071     return ret;
2072 }
2073 #endif  /* CONFIG_AVFILTER */
2074
2075 static int audio_thread(void *arg)
2076 {
2077     VideoState *is = arg;
2078     AVFrame *frame = av_frame_alloc();
2079     Frame *af;
2080 #if CONFIG_AVFILTER
2081     int last_serial = -1;
2082     int64_t dec_channel_layout;
2083     int reconfigure;
2084 #endif
2085     int got_frame = 0;
2086     AVRational tb;
2087     int ret = 0;
2088
2089     if (!frame)
2090         return AVERROR(ENOMEM);
2091
2092     do {
2093         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2094             goto the_end;
2095
2096         if (got_frame) {
2097                 tb = (AVRational){1, frame->sample_rate};
2098
2099 #if CONFIG_AVFILTER
2100                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, av_frame_get_channels(frame));
2101
2102                 reconfigure =
2103                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2104                                    frame->format, av_frame_get_channels(frame))    ||
2105                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2106                     is->audio_filter_src.freq           != frame->sample_rate ||
2107                     is->auddec.pkt_serial               != last_serial;
2108
2109                 if (reconfigure) {
2110                     char buf1[1024], buf2[1024];
2111                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2112                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2113                     av_log(NULL, AV_LOG_DEBUG,
2114                            "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",
2115                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2116                            frame->sample_rate, av_frame_get_channels(frame), av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2117
2118                     is->audio_filter_src.fmt            = frame->format;
2119                     is->audio_filter_src.channels       = av_frame_get_channels(frame);
2120                     is->audio_filter_src.channel_layout = dec_channel_layout;
2121                     is->audio_filter_src.freq           = frame->sample_rate;
2122                     last_serial                         = is->auddec.pkt_serial;
2123
2124                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2125                         goto the_end;
2126                 }
2127
2128             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2129                 goto the_end;
2130
2131             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2132                 tb = is->out_audio_filter->inputs[0]->time_base;
2133 #endif
2134                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2135                     goto the_end;
2136
2137                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2138                 af->pos = av_frame_get_pkt_pos(frame);
2139                 af->serial = is->auddec.pkt_serial;
2140                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2141
2142                 av_frame_move_ref(af->frame, frame);
2143                 frame_queue_push(&is->sampq);
2144
2145 #if CONFIG_AVFILTER
2146                 if (is->audioq.serial != is->auddec.pkt_serial)
2147                     break;
2148             }
2149             if (ret == AVERROR_EOF)
2150                 is->auddec.finished = is->auddec.pkt_serial;
2151 #endif
2152         }
2153     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2154  the_end:
2155 #if CONFIG_AVFILTER
2156     avfilter_graph_free(&is->agraph);
2157 #endif
2158     av_frame_free(&frame);
2159     return ret;
2160 }
2161
2162 static int decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2163 {
2164     packet_queue_start(d->queue);
2165     d->decoder_tid = SDL_CreateThread(fn, arg);
2166     if (!d->decoder_tid) {
2167         av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2168         return AVERROR(ENOMEM);
2169     }
2170     return 0;
2171 }
2172
2173 static int video_thread(void *arg)
2174 {
2175     VideoState *is = arg;
2176     AVFrame *frame = av_frame_alloc();
2177     double pts;
2178     double duration;
2179     int ret;
2180     AVRational tb = is->video_st->time_base;
2181     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2182
2183 #if CONFIG_AVFILTER
2184     AVFilterGraph *graph = avfilter_graph_alloc();
2185     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2186     int last_w = 0;
2187     int last_h = 0;
2188     enum AVPixelFormat last_format = -2;
2189     int last_serial = -1;
2190     int last_vfilter_idx = 0;
2191     if (!graph) {
2192         av_frame_free(&frame);
2193         return AVERROR(ENOMEM);
2194     }
2195
2196 #endif
2197
2198     if (!frame) {
2199 #if CONFIG_AVFILTER
2200         avfilter_graph_free(&graph);
2201 #endif
2202         return AVERROR(ENOMEM);
2203     }
2204
2205     for (;;) {
2206         ret = get_video_frame(is, frame);
2207         if (ret < 0)
2208             goto the_end;
2209         if (!ret)
2210             continue;
2211
2212 #if CONFIG_AVFILTER
2213         if (   last_w != frame->width
2214             || last_h != frame->height
2215             || last_format != frame->format
2216             || last_serial != is->viddec.pkt_serial
2217             || last_vfilter_idx != is->vfilter_idx) {
2218             av_log(NULL, AV_LOG_DEBUG,
2219                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2220                    last_w, last_h,
2221                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2222                    frame->width, frame->height,
2223                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2224             avfilter_graph_free(&graph);
2225             graph = avfilter_graph_alloc();
2226             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2227                 SDL_Event event;
2228                 event.type = FF_QUIT_EVENT;
2229                 event.user.data1 = is;
2230                 SDL_PushEvent(&event);
2231                 goto the_end;
2232             }
2233             filt_in  = is->in_video_filter;
2234             filt_out = is->out_video_filter;
2235             last_w = frame->width;
2236             last_h = frame->height;
2237             last_format = frame->format;
2238             last_serial = is->viddec.pkt_serial;
2239             last_vfilter_idx = is->vfilter_idx;
2240             frame_rate = filt_out->inputs[0]->frame_rate;
2241         }
2242
2243         ret = av_buffersrc_add_frame(filt_in, frame);
2244         if (ret < 0)
2245             goto the_end;
2246
2247         while (ret >= 0) {
2248             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2249
2250             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2251             if (ret < 0) {
2252                 if (ret == AVERROR_EOF)
2253                     is->viddec.finished = is->viddec.pkt_serial;
2254                 ret = 0;
2255                 break;
2256             }
2257
2258             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2259             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2260                 is->frame_last_filter_delay = 0;
2261             tb = filt_out->inputs[0]->time_base;
2262 #endif
2263             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2264             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2265             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), is->viddec.pkt_serial);
2266             av_frame_unref(frame);
2267 #if CONFIG_AVFILTER
2268         }
2269 #endif
2270
2271         if (ret < 0)
2272             goto the_end;
2273     }
2274  the_end:
2275 #if CONFIG_AVFILTER
2276     avfilter_graph_free(&graph);
2277 #endif
2278     av_frame_free(&frame);
2279     return 0;
2280 }
2281
2282 static int subtitle_thread(void *arg)
2283 {
2284     VideoState *is = arg;
2285     Frame *sp;
2286     int got_subtitle;
2287     double pts;
2288     int i;
2289
2290     for (;;) {
2291         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2292             return 0;
2293
2294         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2295             break;
2296
2297         pts = 0;
2298
2299         if (got_subtitle && sp->sub.format == 0) {
2300             if (sp->sub.pts != AV_NOPTS_VALUE)
2301                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2302             sp->pts = pts;
2303             sp->serial = is->subdec.pkt_serial;
2304             if (!(sp->subrects = av_mallocz_array(sp->sub.num_rects, sizeof(AVSubtitleRect*)))) {
2305                 av_log(NULL, AV_LOG_FATAL, "Cannot allocate subrects\n");
2306                 exit(1);
2307             }
2308
2309             for (i = 0; i < sp->sub.num_rects; i++)
2310             {
2311                 int in_w = sp->sub.rects[i]->w;
2312                 int in_h = sp->sub.rects[i]->h;
2313                 int subw = is->subdec.avctx->width  ? is->subdec.avctx->width  : is->viddec_width;
2314                 int subh = is->subdec.avctx->height ? is->subdec.avctx->height : is->viddec_height;
2315                 int out_w = is->viddec_width  ? in_w * is->viddec_width  / subw : in_w;
2316                 int out_h = is->viddec_height ? in_h * is->viddec_height / subh : in_h;
2317
2318                 if (!(sp->subrects[i] = av_mallocz(sizeof(AVSubtitleRect))) ||
2319                     av_image_alloc(sp->subrects[i]->data, sp->subrects[i]->linesize, out_w, out_h, AV_PIX_FMT_YUVA420P, 16) < 0) {
2320                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate subtitle data\n");
2321                     exit(1);
2322                 }
2323
2324                 is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
2325                     in_w, in_h, AV_PIX_FMT_PAL8, out_w, out_h,
2326                     AV_PIX_FMT_YUVA420P, sws_flags, NULL, NULL, NULL);
2327                 if (!is->sub_convert_ctx) {
2328                     av_log(NULL, AV_LOG_FATAL, "Cannot initialize the sub conversion context\n");
2329                     exit(1);
2330                 }
2331                 sws_scale(is->sub_convert_ctx,
2332                           (void*)sp->sub.rects[i]->data, sp->sub.rects[i]->linesize,
2333                           0, in_h, sp->subrects[i]->data, sp->subrects[i]->linesize);
2334
2335                 sp->subrects[i]->w = out_w;
2336                 sp->subrects[i]->h = out_h;
2337                 sp->subrects[i]->x = sp->sub.rects[i]->x * out_w / in_w;
2338                 sp->subrects[i]->y = sp->sub.rects[i]->y * out_h / in_h;
2339             }
2340
2341             /* now we can update the picture count */
2342             frame_queue_push(&is->subpq);
2343         } else if (got_subtitle) {
2344             avsubtitle_free(&sp->sub);
2345         }
2346     }
2347     return 0;
2348 }
2349
2350 /* copy samples for viewing in editor window */
2351 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2352 {
2353     int size, len;
2354
2355     size = samples_size / sizeof(short);
2356     while (size > 0) {
2357         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2358         if (len > size)
2359             len = size;
2360         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2361         samples += len;
2362         is->sample_array_index += len;
2363         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2364             is->sample_array_index = 0;
2365         size -= len;
2366     }
2367 }
2368
2369 /* return the wanted number of samples to get better sync if sync_type is video
2370  * or external master clock */
2371 static int synchronize_audio(VideoState *is, int nb_samples)
2372 {
2373     int wanted_nb_samples = nb_samples;
2374
2375     /* if not master, then we try to remove or add samples to correct the clock */
2376     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2377         double diff, avg_diff;
2378         int min_nb_samples, max_nb_samples;
2379
2380         diff = get_clock(&is->audclk) - get_master_clock(is);
2381
2382         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2383             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2384             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2385                 /* not enough measures to have a correct estimate */
2386                 is->audio_diff_avg_count++;
2387             } else {
2388                 /* estimate the A-V difference */
2389                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2390
2391                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2392                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2393                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2394                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2395                     wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2396                 }
2397                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2398                         diff, avg_diff, wanted_nb_samples - nb_samples,
2399                         is->audio_clock, is->audio_diff_threshold);
2400             }
2401         } else {
2402             /* too big difference : may be initial PTS errors, so
2403                reset A-V filter */
2404             is->audio_diff_avg_count = 0;
2405             is->audio_diff_cum       = 0;
2406         }
2407     }
2408
2409     return wanted_nb_samples;
2410 }
2411
2412 /**
2413  * Decode one audio frame and return its uncompressed size.
2414  *
2415  * The processed audio frame is decoded, converted if required, and
2416  * stored in is->audio_buf, with size in bytes given by the return
2417  * value.
2418  */
2419 static int audio_decode_frame(VideoState *is)
2420 {
2421     int data_size, resampled_data_size;
2422     int64_t dec_channel_layout;
2423     av_unused double audio_clock0;
2424     int wanted_nb_samples;
2425     Frame *af;
2426
2427     if (is->paused)
2428         return -1;
2429
2430     do {
2431 #if defined(_WIN32)
2432         while (frame_queue_nb_remaining(&is->sampq) == 0) {
2433             if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2434                 return -1;
2435             av_usleep (1000);
2436         }
2437 #endif
2438         if (!(af = frame_queue_peek_readable(&is->sampq)))
2439             return -1;
2440         frame_queue_next(&is->sampq);
2441     } while (af->serial != is->audioq.serial);
2442
2443     data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(af->frame),
2444                                            af->frame->nb_samples,
2445                                            af->frame->format, 1);
2446
2447     dec_channel_layout =
2448         (af->frame->channel_layout && av_frame_get_channels(af->frame) == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2449         af->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(af->frame));
2450     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2451
2452     if (af->frame->format        != is->audio_src.fmt            ||
2453         dec_channel_layout       != is->audio_src.channel_layout ||
2454         af->frame->sample_rate   != is->audio_src.freq           ||
2455         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2456         swr_free(&is->swr_ctx);
2457         is->swr_ctx = swr_alloc_set_opts(NULL,
2458                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2459                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2460                                          0, NULL);
2461         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2462             av_log(NULL, AV_LOG_ERROR,
2463                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2464                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), av_frame_get_channels(af->frame),
2465                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2466             swr_free(&is->swr_ctx);
2467             return -1;
2468         }
2469         is->audio_src.channel_layout = dec_channel_layout;
2470         is->audio_src.channels       = av_frame_get_channels(af->frame);
2471         is->audio_src.freq = af->frame->sample_rate;
2472         is->audio_src.fmt = af->frame->format;
2473     }
2474
2475     if (is->swr_ctx) {
2476         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2477         uint8_t **out = &is->audio_buf1;
2478         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2479         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2480         int len2;
2481         if (out_size < 0) {
2482             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2483             return -1;
2484         }
2485         if (wanted_nb_samples != af->frame->nb_samples) {
2486             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2487                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2488                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2489                 return -1;
2490             }
2491         }
2492         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2493         if (!is->audio_buf1)
2494             return AVERROR(ENOMEM);
2495         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2496         if (len2 < 0) {
2497             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2498             return -1;
2499         }
2500         if (len2 == out_count) {
2501             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2502             if (swr_init(is->swr_ctx) < 0)
2503                 swr_free(&is->swr_ctx);
2504         }
2505         is->audio_buf = is->audio_buf1;
2506         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2507     } else {
2508         is->audio_buf = af->frame->data[0];
2509         resampled_data_size = data_size;
2510     }
2511
2512     audio_clock0 = is->audio_clock;
2513     /* update the audio clock with the pts */
2514     if (!isnan(af->pts))
2515         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2516     else
2517         is->audio_clock = NAN;
2518     is->audio_clock_serial = af->serial;
2519 #ifdef DEBUG
2520     {
2521         static double last_clock;
2522         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2523                is->audio_clock - last_clock,
2524                is->audio_clock, audio_clock0);
2525         last_clock = is->audio_clock;
2526     }
2527 #endif
2528     return resampled_data_size;
2529 }
2530
2531 /* prepare a new audio buffer */
2532 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2533 {
2534     VideoState *is = opaque;
2535     int audio_size, len1;
2536
2537     audio_callback_time = av_gettime_relative();
2538
2539     while (len > 0) {
2540         if (is->audio_buf_index >= is->audio_buf_size) {
2541            audio_size = audio_decode_frame(is);
2542            if (audio_size < 0) {
2543                 /* if error, just output silence */
2544                is->audio_buf      = is->silence_buf;
2545                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2546            } else {
2547                if (is->show_mode != SHOW_MODE_VIDEO)
2548                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2549                is->audio_buf_size = audio_size;
2550            }
2551            is->audio_buf_index = 0;
2552         }
2553         len1 = is->audio_buf_size - is->audio_buf_index;
2554         if (len1 > len)
2555             len1 = len;
2556         if (!is->muted && is->audio_volume == SDL_MIX_MAXVOLUME)
2557             memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2558         else {
2559             memset(stream, is->silence_buf[0], len1);
2560             if (!is->muted)
2561                 SDL_MixAudio(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1, is->audio_volume);
2562         }
2563         len -= len1;
2564         stream += len1;
2565         is->audio_buf_index += len1;
2566     }
2567     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2568     /* Let's assume the audio driver that is used by SDL has two periods. */
2569     if (!isnan(is->audio_clock)) {
2570         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);
2571         sync_clock_to_slave(&is->extclk, &is->audclk);
2572     }
2573 }
2574
2575 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2576 {
2577     SDL_AudioSpec wanted_spec, spec;
2578     const char *env;
2579     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2580     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2581     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2582
2583     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2584     if (env) {
2585         wanted_nb_channels = atoi(env);
2586         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2587     }
2588     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2589         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2590         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2591     }
2592     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2593     wanted_spec.channels = wanted_nb_channels;
2594     wanted_spec.freq = wanted_sample_rate;
2595     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2596         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2597         return -1;
2598     }
2599     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2600         next_sample_rate_idx--;
2601     wanted_spec.format = AUDIO_S16SYS;
2602     wanted_spec.silence = 0;
2603     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2604     wanted_spec.callback = sdl_audio_callback;
2605     wanted_spec.userdata = opaque;
2606     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2607         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2608                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2609         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2610         if (!wanted_spec.channels) {
2611             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2612             wanted_spec.channels = wanted_nb_channels;
2613             if (!wanted_spec.freq) {
2614                 av_log(NULL, AV_LOG_ERROR,
2615                        "No more combinations to try, audio open failed\n");
2616                 return -1;
2617             }
2618         }
2619         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2620     }
2621     if (spec.format != AUDIO_S16SYS) {
2622         av_log(NULL, AV_LOG_ERROR,
2623                "SDL advised audio format %d is not supported!\n", spec.format);
2624         return -1;
2625     }
2626     if (spec.channels != wanted_spec.channels) {
2627         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2628         if (!wanted_channel_layout) {
2629             av_log(NULL, AV_LOG_ERROR,
2630                    "SDL advised channel count %d is not supported!\n", spec.channels);
2631             return -1;
2632         }
2633     }
2634
2635     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2636     audio_hw_params->freq = spec.freq;
2637     audio_hw_params->channel_layout = wanted_channel_layout;
2638     audio_hw_params->channels =  spec.channels;
2639     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2640     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);
2641     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2642         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2643         return -1;
2644     }
2645     return spec.size;
2646 }
2647
2648 /* open a given stream. Return 0 if OK */
2649 static int stream_component_open(VideoState *is, int stream_index)
2650 {
2651     AVFormatContext *ic = is->ic;
2652     AVCodecContext *avctx;
2653     AVCodec *codec;
2654     const char *forced_codec_name = NULL;
2655     AVDictionary *opts;
2656     AVDictionaryEntry *t = NULL;
2657     int sample_rate, nb_channels;
2658     int64_t channel_layout;
2659     int ret = 0;
2660     int stream_lowres = lowres;
2661
2662     if (stream_index < 0 || stream_index >= ic->nb_streams)
2663         return -1;
2664     avctx = ic->streams[stream_index]->codec;
2665
2666     codec = avcodec_find_decoder(avctx->codec_id);
2667
2668     switch(avctx->codec_type){
2669         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2670         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2671         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2672     }
2673     if (forced_codec_name)
2674         codec = avcodec_find_decoder_by_name(forced_codec_name);
2675     if (!codec) {
2676         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2677                                       "No codec could be found with name '%s'\n", forced_codec_name);
2678         else                   av_log(NULL, AV_LOG_WARNING,
2679                                       "No codec could be found with id %d\n", avctx->codec_id);
2680         return -1;
2681     }
2682
2683     avctx->codec_id = codec->id;
2684     if(stream_lowres > av_codec_get_max_lowres(codec)){
2685         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2686                 av_codec_get_max_lowres(codec));
2687         stream_lowres = av_codec_get_max_lowres(codec);
2688     }
2689     av_codec_set_lowres(avctx, stream_lowres);
2690
2691 #if FF_API_EMU_EDGE
2692     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2693 #endif
2694     if (fast)
2695         avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2696 #if FF_API_EMU_EDGE
2697     if(codec->capabilities & AV_CODEC_CAP_DR1)
2698         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2699 #endif
2700
2701     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2702     if (!av_dict_get(opts, "threads", NULL, 0))
2703         av_dict_set(&opts, "threads", "auto", 0);
2704     if (stream_lowres)
2705         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2706     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2707         av_dict_set(&opts, "refcounted_frames", "1", 0);
2708     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2709         goto fail;
2710     }
2711     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2712         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2713         ret =  AVERROR_OPTION_NOT_FOUND;
2714         goto fail;
2715     }
2716
2717     is->eof = 0;
2718     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2719     switch (avctx->codec_type) {
2720     case AVMEDIA_TYPE_AUDIO:
2721 #if CONFIG_AVFILTER
2722         {
2723             AVFilterLink *link;
2724
2725             is->audio_filter_src.freq           = avctx->sample_rate;
2726             is->audio_filter_src.channels       = avctx->channels;
2727             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2728             is->audio_filter_src.fmt            = avctx->sample_fmt;
2729             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2730                 goto fail;
2731             link = is->out_audio_filter->inputs[0];
2732             sample_rate    = link->sample_rate;
2733             nb_channels    = link->channels;
2734             channel_layout = link->channel_layout;
2735         }
2736 #else
2737         sample_rate    = avctx->sample_rate;
2738         nb_channels    = avctx->channels;
2739         channel_layout = avctx->channel_layout;
2740 #endif
2741
2742         /* prepare audio output */
2743         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2744             goto fail;
2745         is->audio_hw_buf_size = ret;
2746         is->audio_src = is->audio_tgt;
2747         is->audio_buf_size  = 0;
2748         is->audio_buf_index = 0;
2749
2750         /* init averaging filter */
2751         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2752         is->audio_diff_avg_count = 0;
2753         /* since we do not have a precise anough audio fifo fullness,
2754            we correct audio sync only if larger than this threshold */
2755         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2756
2757         is->audio_stream = stream_index;
2758         is->audio_st = ic->streams[stream_index];
2759
2760         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2761         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2762             is->auddec.start_pts = is->audio_st->start_time;
2763             is->auddec.start_pts_tb = is->audio_st->time_base;
2764         }
2765         if ((ret = decoder_start(&is->auddec, audio_thread, is)) < 0)
2766             goto fail;
2767         SDL_PauseAudio(0);
2768         break;
2769     case AVMEDIA_TYPE_VIDEO:
2770         is->video_stream = stream_index;
2771         is->video_st = ic->streams[stream_index];
2772
2773         is->viddec_width  = avctx->width;
2774         is->viddec_height = avctx->height;
2775
2776         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2777         if ((ret = decoder_start(&is->viddec, video_thread, is)) < 0)
2778             goto fail;
2779         is->queue_attachments_req = 1;
2780         break;
2781     case AVMEDIA_TYPE_SUBTITLE:
2782         is->subtitle_stream = stream_index;
2783         is->subtitle_st = ic->streams[stream_index];
2784
2785         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2786         if ((ret = decoder_start(&is->subdec, subtitle_thread, is)) < 0)
2787             goto fail;
2788         break;
2789     default:
2790         break;
2791     }
2792
2793 fail:
2794     av_dict_free(&opts);
2795
2796     return ret;
2797 }
2798
2799 static int decode_interrupt_cb(void *ctx)
2800 {
2801     VideoState *is = ctx;
2802     return is->abort_request;
2803 }
2804
2805 static int is_realtime(AVFormatContext *s)
2806 {
2807     if(   !strcmp(s->iformat->name, "rtp")
2808        || !strcmp(s->iformat->name, "rtsp")
2809        || !strcmp(s->iformat->name, "sdp")
2810     )
2811         return 1;
2812
2813     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2814                  || !strncmp(s->filename, "udp:", 4)
2815                 )
2816     )
2817         return 1;
2818     return 0;
2819 }
2820
2821 /* this thread gets the stream from the disk or the network */
2822 static int read_thread(void *arg)
2823 {
2824     VideoState *is = arg;
2825     AVFormatContext *ic = NULL;
2826     int err, i, ret;
2827     int st_index[AVMEDIA_TYPE_NB];
2828     AVPacket pkt1, *pkt = &pkt1;
2829     int64_t stream_start_time;
2830     int pkt_in_play_range = 0;
2831     AVDictionaryEntry *t;
2832     AVDictionary **opts;
2833     int orig_nb_streams;
2834     SDL_mutex *wait_mutex = SDL_CreateMutex();
2835     int scan_all_pmts_set = 0;
2836     int64_t pkt_ts;
2837
2838     if (!wait_mutex) {
2839         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2840         ret = AVERROR(ENOMEM);
2841         goto fail;
2842     }
2843
2844     memset(st_index, -1, sizeof(st_index));
2845     is->last_video_stream = is->video_stream = -1;
2846     is->last_audio_stream = is->audio_stream = -1;
2847     is->last_subtitle_stream = is->subtitle_stream = -1;
2848     is->eof = 0;
2849
2850     ic = avformat_alloc_context();
2851     if (!ic) {
2852         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2853         ret = AVERROR(ENOMEM);
2854         goto fail;
2855     }
2856     ic->interrupt_callback.callback = decode_interrupt_cb;
2857     ic->interrupt_callback.opaque = is;
2858     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2859         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2860         scan_all_pmts_set = 1;
2861     }
2862     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2863     if (err < 0) {
2864         print_error(is->filename, err);
2865         ret = -1;
2866         goto fail;
2867     }
2868     if (scan_all_pmts_set)
2869         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2870
2871     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2872         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2873         ret = AVERROR_OPTION_NOT_FOUND;
2874         goto fail;
2875     }
2876     is->ic = ic;
2877
2878     if (genpts)
2879         ic->flags |= AVFMT_FLAG_GENPTS;
2880
2881     av_format_inject_global_side_data(ic);
2882
2883     opts = setup_find_stream_info_opts(ic, codec_opts);
2884     orig_nb_streams = ic->nb_streams;
2885
2886     err = avformat_find_stream_info(ic, opts);
2887
2888     for (i = 0; i < orig_nb_streams; i++)
2889         av_dict_free(&opts[i]);
2890     av_freep(&opts);
2891
2892     if (err < 0) {
2893         av_log(NULL, AV_LOG_WARNING,
2894                "%s: could not find codec parameters\n", is->filename);
2895         ret = -1;
2896         goto fail;
2897     }
2898
2899     if (ic->pb)
2900         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2901
2902     if (seek_by_bytes < 0)
2903         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2904
2905     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2906
2907     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2908         window_title = av_asprintf("%s - %s", t->value, input_filename);
2909
2910     /* if seeking requested, we execute it */
2911     if (start_time != AV_NOPTS_VALUE) {
2912         int64_t timestamp;
2913
2914         timestamp = start_time;
2915         /* add the stream start time */
2916         if (ic->start_time != AV_NOPTS_VALUE)
2917             timestamp += ic->start_time;
2918         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2919         if (ret < 0) {
2920             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2921                     is->filename, (double)timestamp / AV_TIME_BASE);
2922         }
2923     }
2924
2925     is->realtime = is_realtime(ic);
2926
2927     if (show_status)
2928         av_dump_format(ic, 0, is->filename, 0);
2929
2930     for (i = 0; i < ic->nb_streams; i++) {
2931         AVStream *st = ic->streams[i];
2932         enum AVMediaType type = st->codec->codec_type;
2933         st->discard = AVDISCARD_ALL;
2934         if (wanted_stream_spec[type] && st_index[type] == -1)
2935             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2936                 st_index[type] = i;
2937     }
2938     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2939         if (wanted_stream_spec[i] && st_index[i] == -1) {
2940             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));
2941             st_index[i] = INT_MAX;
2942         }
2943     }
2944
2945     if (!video_disable)
2946         st_index[AVMEDIA_TYPE_VIDEO] =
2947             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2948                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2949     if (!audio_disable)
2950         st_index[AVMEDIA_TYPE_AUDIO] =
2951             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2952                                 st_index[AVMEDIA_TYPE_AUDIO],
2953                                 st_index[AVMEDIA_TYPE_VIDEO],
2954                                 NULL, 0);
2955     if (!video_disable && !subtitle_disable)
2956         st_index[AVMEDIA_TYPE_SUBTITLE] =
2957             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2958                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2959                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2960                                  st_index[AVMEDIA_TYPE_AUDIO] :
2961                                  st_index[AVMEDIA_TYPE_VIDEO]),
2962                                 NULL, 0);
2963
2964     is->show_mode = show_mode;
2965     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2966         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2967         AVCodecContext *avctx = st->codec;
2968         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2969         if (avctx->width)
2970             set_default_window_size(avctx->width, avctx->height, sar);
2971     }
2972
2973     /* open the streams */
2974     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2975         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2976     }
2977
2978     ret = -1;
2979     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2980         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2981     }
2982     if (is->show_mode == SHOW_MODE_NONE)
2983         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2984
2985     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2986         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2987     }
2988
2989     if (is->video_stream < 0 && is->audio_stream < 0) {
2990         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2991                is->filename);
2992         ret = -1;
2993         goto fail;
2994     }
2995
2996     if (infinite_buffer < 0 && is->realtime)
2997         infinite_buffer = 1;
2998
2999     for (;;) {
3000         if (is->abort_request)
3001             break;
3002         if (is->paused != is->last_paused) {
3003             is->last_paused = is->paused;
3004             if (is->paused)
3005                 is->read_pause_return = av_read_pause(ic);
3006             else
3007                 av_read_play(ic);
3008         }
3009 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
3010         if (is->paused &&
3011                 (!strcmp(ic->iformat->name, "rtsp") ||
3012                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
3013             /* wait 10 ms to avoid trying to get another packet */
3014             /* XXX: horrible */
3015             SDL_Delay(10);
3016             continue;
3017         }
3018 #endif
3019         if (is->seek_req) {
3020             int64_t seek_target = is->seek_pos;
3021             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
3022             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
3023 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
3024 //      of the seek_pos/seek_rel variables
3025
3026             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
3027             if (ret < 0) {
3028                 av_log(NULL, AV_LOG_ERROR,
3029                        "%s: error while seeking\n", is->ic->filename);
3030             } else {
3031                 if (is->audio_stream >= 0) {
3032                     packet_queue_flush(&is->audioq);
3033                     packet_queue_put(&is->audioq, &flush_pkt);
3034                 }
3035                 if (is->subtitle_stream >= 0) {
3036                     packet_queue_flush(&is->subtitleq);
3037                     packet_queue_put(&is->subtitleq, &flush_pkt);
3038                 }
3039                 if (is->video_stream >= 0) {
3040                     packet_queue_flush(&is->videoq);
3041                     packet_queue_put(&is->videoq, &flush_pkt);
3042                 }
3043                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
3044                    set_clock(&is->extclk, NAN, 0);
3045                 } else {
3046                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
3047                 }
3048             }
3049             is->seek_req = 0;
3050             is->queue_attachments_req = 1;
3051             is->eof = 0;
3052             if (is->paused)
3053                 step_to_next_frame(is);
3054         }
3055         if (is->queue_attachments_req) {
3056             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
3057                 AVPacket copy;
3058                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
3059                     goto fail;
3060                 packet_queue_put(&is->videoq, &copy);
3061                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3062             }
3063             is->queue_attachments_req = 0;
3064         }
3065
3066         /* if the queue are full, no need to read more */
3067         if (infinite_buffer<1 &&
3068               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3069             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
3070                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
3071                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3072                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
3073             /* wait 10 ms */
3074             SDL_LockMutex(wait_mutex);
3075             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3076             SDL_UnlockMutex(wait_mutex);
3077             continue;
3078         }
3079         if (!is->paused &&
3080             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3081             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3082             if (loop != 1 && (!loop || --loop)) {
3083                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3084             } else if (autoexit) {
3085                 ret = AVERROR_EOF;
3086                 goto fail;
3087             }
3088         }
3089         ret = av_read_frame(ic, pkt);
3090         if (ret < 0) {
3091             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3092                 if (is->video_stream >= 0)
3093                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3094                 if (is->audio_stream >= 0)
3095                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3096                 if (is->subtitle_stream >= 0)
3097                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3098                 is->eof = 1;
3099             }
3100             if (ic->pb && ic->pb->error)
3101                 break;
3102             SDL_LockMutex(wait_mutex);
3103             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3104             SDL_UnlockMutex(wait_mutex);
3105             continue;
3106         } else {
3107             is->eof = 0;
3108         }
3109         /* check if packet is in play range specified by user, then queue, otherwise discard */
3110         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3111         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3112         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3113                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3114                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3115                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3116                 <= ((double)duration / 1000000);
3117         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3118             packet_queue_put(&is->audioq, pkt);
3119         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3120                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3121             packet_queue_put(&is->videoq, pkt);
3122         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3123             packet_queue_put(&is->subtitleq, pkt);
3124         } else {
3125             av_packet_unref(pkt);
3126         }
3127     }
3128
3129     ret = 0;
3130  fail:
3131     if (ic && !is->ic)
3132         avformat_close_input(&ic);
3133
3134     if (ret != 0) {
3135         SDL_Event event;
3136
3137         event.type = FF_QUIT_EVENT;
3138         event.user.data1 = is;
3139         SDL_PushEvent(&event);
3140     }
3141     SDL_DestroyMutex(wait_mutex);
3142     return 0;
3143 }
3144
3145 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3146 {
3147     VideoState *is;
3148
3149     is = av_mallocz(sizeof(VideoState));
3150     if (!is)
3151         return NULL;
3152     is->filename = av_strdup(filename);
3153     if (!is->filename)
3154         goto fail;
3155     is->iformat = iformat;
3156     is->ytop    = 0;
3157     is->xleft   = 0;
3158
3159     /* start video display */
3160     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3161         goto fail;
3162     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3163         goto fail;
3164     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3165         goto fail;
3166
3167     if (packet_queue_init(&is->videoq) < 0 ||
3168         packet_queue_init(&is->audioq) < 0 ||
3169         packet_queue_init(&is->subtitleq) < 0)
3170         goto fail;
3171
3172     if (!(is->continue_read_thread = SDL_CreateCond())) {
3173         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3174         goto fail;
3175     }
3176
3177     init_clock(&is->vidclk, &is->videoq.serial);
3178     init_clock(&is->audclk, &is->audioq.serial);
3179     init_clock(&is->extclk, &is->extclk.serial);
3180     is->audio_clock_serial = -1;
3181     is->audio_volume = SDL_MIX_MAXVOLUME;
3182     is->muted = 0;
3183     is->av_sync_type = av_sync_type;
3184     is->read_tid     = SDL_CreateThread(read_thread, is);
3185     if (!is->read_tid) {
3186         av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3187 fail:
3188         stream_close(is);
3189         return NULL;
3190     }
3191     return is;
3192 }
3193
3194 static void stream_cycle_channel(VideoState *is, int codec_type)
3195 {
3196     AVFormatContext *ic = is->ic;
3197     int start_index, stream_index;
3198     int old_index;
3199     AVStream *st;
3200     AVProgram *p = NULL;
3201     int nb_streams = is->ic->nb_streams;
3202
3203     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3204         start_index = is->last_video_stream;
3205         old_index = is->video_stream;
3206     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3207         start_index = is->last_audio_stream;
3208         old_index = is->audio_stream;
3209     } else {
3210         start_index = is->last_subtitle_stream;
3211         old_index = is->subtitle_stream;
3212     }
3213     stream_index = start_index;
3214
3215     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3216         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3217         if (p) {
3218             nb_streams = p->nb_stream_indexes;
3219             for (start_index = 0; start_index < nb_streams; start_index++)
3220                 if (p->stream_index[start_index] == stream_index)
3221                     break;
3222             if (start_index == nb_streams)
3223                 start_index = -1;
3224             stream_index = start_index;
3225         }
3226     }
3227
3228     for (;;) {
3229         if (++stream_index >= nb_streams)
3230         {
3231             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3232             {
3233                 stream_index = -1;
3234                 is->last_subtitle_stream = -1;
3235                 goto the_end;
3236             }
3237             if (start_index == -1)
3238                 return;
3239             stream_index = 0;
3240         }
3241         if (stream_index == start_index)
3242             return;
3243         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3244         if (st->codec->codec_type == codec_type) {
3245             /* check that parameters are OK */
3246             switch (codec_type) {
3247             case AVMEDIA_TYPE_AUDIO:
3248                 if (st->codec->sample_rate != 0 &&
3249                     st->codec->channels != 0)
3250                     goto the_end;
3251                 break;
3252             case AVMEDIA_TYPE_VIDEO:
3253             case AVMEDIA_TYPE_SUBTITLE:
3254                 goto the_end;
3255             default:
3256                 break;
3257             }
3258         }
3259     }
3260  the_end:
3261     if (p && stream_index != -1)
3262         stream_index = p->stream_index[stream_index];
3263     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3264            av_get_media_type_string(codec_type),
3265            old_index,
3266            stream_index);
3267
3268     stream_component_close(is, old_index);
3269     stream_component_open(is, stream_index);
3270 }
3271
3272
3273 static void toggle_full_screen(VideoState *is)
3274 {
3275 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3276     /* OS X needs to reallocate the SDL overlays */
3277     int i;
3278     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3279         is->pictq.queue[i].reallocate = 1;
3280 #endif
3281     is_full_screen = !is_full_screen;
3282     video_open(is, 1, NULL);
3283 }
3284
3285 static void toggle_audio_display(VideoState *is)
3286 {
3287     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3288     int next = is->show_mode;
3289     do {
3290         next = (next + 1) % SHOW_MODE_NB;
3291     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3292     if (is->show_mode != next) {
3293         fill_rectangle(screen,
3294                     is->xleft, is->ytop, is->width, is->height,
3295                     bgcolor, 1);
3296         is->force_refresh = 1;
3297         is->show_mode = next;
3298     }
3299 }
3300
3301 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3302     double remaining_time = 0.0;
3303     SDL_PumpEvents();
3304     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3305         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3306             SDL_ShowCursor(0);
3307             cursor_hidden = 1;
3308         }
3309         if (remaining_time > 0.0)
3310             av_usleep((int64_t)(remaining_time * 1000000.0));
3311         remaining_time = REFRESH_RATE;
3312         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3313             video_refresh(is, &remaining_time);
3314         SDL_PumpEvents();
3315     }
3316 }
3317
3318 static void seek_chapter(VideoState *is, int incr)
3319 {
3320     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3321     int i;
3322
3323     if (!is->ic->nb_chapters)
3324         return;
3325
3326     /* find the current chapter */
3327     for (i = 0; i < is->ic->nb_chapters; i++) {
3328         AVChapter *ch = is->ic->chapters[i];
3329         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3330             i--;
3331             break;
3332         }
3333     }
3334
3335     i += incr;
3336     i = FFMAX(i, 0);
3337     if (i >= is->ic->nb_chapters)
3338         return;
3339
3340     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3341     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3342                                  AV_TIME_BASE_Q), 0, 0);
3343 }
3344
3345 /* handle an event sent by the GUI */
3346 static void event_loop(VideoState *cur_stream)
3347 {
3348     SDL_Event event;
3349     double incr, pos, frac;
3350
3351     for (;;) {
3352         double x;
3353         refresh_loop_wait_event(cur_stream, &event);
3354         switch (event.type) {
3355         case SDL_KEYDOWN:
3356             if (exit_on_keydown) {
3357                 do_exit(cur_stream);
3358                 break;
3359             }
3360             switch (event.key.keysym.sym) {
3361             case SDLK_ESCAPE:
3362             case SDLK_q:
3363                 do_exit(cur_stream);
3364                 break;
3365             case SDLK_f:
3366                 toggle_full_screen(cur_stream);
3367                 cur_stream->force_refresh = 1;
3368                 break;
3369             case SDLK_p:
3370             case SDLK_SPACE:
3371                 toggle_pause(cur_stream);
3372                 break;
3373             case SDLK_m:
3374                 toggle_mute(cur_stream);
3375                 break;
3376             case SDLK_KP_MULTIPLY:
3377             case SDLK_0:
3378                 update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3379                 break;
3380             case SDLK_KP_DIVIDE:
3381             case SDLK_9:
3382                 update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3383                 break;
3384             case SDLK_s: // S: Step to next frame
3385                 step_to_next_frame(cur_stream);
3386                 break;
3387             case SDLK_a:
3388                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3389                 break;
3390             case SDLK_v:
3391                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3392                 break;
3393             case SDLK_c:
3394                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3395                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3396                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3397                 break;
3398             case SDLK_t:
3399                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3400                 break;
3401             case SDLK_w:
3402 #if CONFIG_AVFILTER
3403                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3404                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3405                         cur_stream->vfilter_idx = 0;
3406                 } else {
3407                     cur_stream->vfilter_idx = 0;
3408                     toggle_audio_display(cur_stream);
3409                 }
3410 #else
3411                 toggle_audio_display(cur_stream);
3412 #endif
3413                 break;
3414             case SDLK_PAGEUP:
3415                 if (cur_stream->ic->nb_chapters <= 1) {
3416                     incr = 600.0;
3417                     goto do_seek;
3418                 }
3419                 seek_chapter(cur_stream, 1);
3420                 break;
3421             case SDLK_PAGEDOWN:
3422                 if (cur_stream->ic->nb_chapters <= 1) {
3423                     incr = -600.0;
3424                     goto do_seek;
3425                 }
3426                 seek_chapter(cur_stream, -1);
3427                 break;
3428             case SDLK_LEFT:
3429                 incr = -10.0;
3430                 goto do_seek;
3431             case SDLK_RIGHT:
3432                 incr = 10.0;
3433                 goto do_seek;
3434             case SDLK_UP:
3435                 incr = 60.0;
3436                 goto do_seek;
3437             case SDLK_DOWN:
3438                 incr = -60.0;
3439             do_seek:
3440                     if (seek_by_bytes) {
3441                         pos = -1;
3442                         if (pos < 0 && cur_stream->video_stream >= 0)
3443                             pos = frame_queue_last_pos(&cur_stream->pictq);
3444                         if (pos < 0 && cur_stream->audio_stream >= 0)
3445                             pos = frame_queue_last_pos(&cur_stream->sampq);
3446                         if (pos < 0)
3447                             pos = avio_tell(cur_stream->ic->pb);
3448                         if (cur_stream->ic->bit_rate)
3449                             incr *= cur_stream->ic->bit_rate / 8.0;
3450                         else
3451                             incr *= 180000.0;
3452                         pos += incr;
3453                         stream_seek(cur_stream, pos, incr, 1);
3454                     } else {
3455                         pos = get_master_clock(cur_stream);
3456                         if (isnan(pos))
3457                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3458                         pos += incr;
3459                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3460                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3461                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3462                     }
3463                 break;
3464             default:
3465                 break;
3466             }
3467             break;
3468         case SDL_VIDEOEXPOSE:
3469             cur_stream->force_refresh = 1;
3470             break;
3471         case SDL_MOUSEBUTTONDOWN:
3472             if (exit_on_mousedown) {
3473                 do_exit(cur_stream);
3474                 break;
3475             }
3476             if (event.button.button == SDL_BUTTON_LEFT) {
3477                 static int64_t last_mouse_left_click = 0;
3478                 if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3479                     toggle_full_screen(cur_stream);
3480                     cur_stream->force_refresh = 1;
3481                     last_mouse_left_click = 0;
3482                 } else {
3483                     last_mouse_left_click = av_gettime_relative();
3484                 }
3485             }
3486         case SDL_MOUSEMOTION:
3487             if (cursor_hidden) {
3488                 SDL_ShowCursor(1);
3489                 cursor_hidden = 0;
3490             }
3491             cursor_last_shown = av_gettime_relative();
3492             if (event.type == SDL_MOUSEBUTTONDOWN) {
3493                 if (event.button.button != SDL_BUTTON_RIGHT)
3494                     break;
3495                 x = event.button.x;
3496             } else {
3497                 if (!(event.motion.state & SDL_BUTTON_RMASK))
3498                     break;
3499                 x = event.motion.x;
3500             }
3501                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3502                     uint64_t size =  avio_size(cur_stream->ic->pb);
3503                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3504                 } else {
3505                     int64_t ts;
3506                     int ns, hh, mm, ss;
3507                     int tns, thh, tmm, tss;
3508                     tns  = cur_stream->ic->duration / 1000000LL;
3509                     thh  = tns / 3600;
3510                     tmm  = (tns % 3600) / 60;
3511                     tss  = (tns % 60);
3512                     frac = x / cur_stream->width;
3513                     ns   = frac * tns;
3514                     hh   = ns / 3600;
3515                     mm   = (ns % 3600) / 60;
3516                     ss   = (ns % 60);
3517                     av_log(NULL, AV_LOG_INFO,
3518                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3519                             hh, mm, ss, thh, tmm, tss);
3520                     ts = frac * cur_stream->ic->duration;
3521                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3522                         ts += cur_stream->ic->start_time;
3523                     stream_seek(cur_stream, ts, 0, 0);
3524                 }
3525             break;
3526         case SDL_VIDEORESIZE:
3527                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3528                                           SDL_HWSURFACE|(is_full_screen?SDL_FULLSCREEN:SDL_RESIZABLE)|SDL_ASYNCBLIT|SDL_HWACCEL);
3529                 if (!screen) {
3530                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3531                     do_exit(cur_stream);
3532                 }
3533                 screen_width  = cur_stream->width  = screen->w;
3534                 screen_height = cur_stream->height = screen->h;
3535                 cur_stream->force_refresh = 1;
3536             break;
3537         case SDL_QUIT:
3538         case FF_QUIT_EVENT:
3539             do_exit(cur_stream);
3540             break;
3541         case FF_ALLOC_EVENT:
3542             alloc_picture(event.user.data1);
3543             break;
3544         default:
3545             break;
3546         }
3547     }
3548 }
3549
3550 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3551 {
3552     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3553     return opt_default(NULL, "video_size", arg);
3554 }
3555
3556 static int opt_width(void *optctx, const char *opt, const char *arg)
3557 {
3558     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3559     return 0;
3560 }
3561
3562 static int opt_height(void *optctx, const char *opt, const char *arg)
3563 {
3564     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3565     return 0;
3566 }
3567
3568 static int opt_format(void *optctx, const char *opt, const char *arg)
3569 {
3570     file_iformat = av_find_input_format(arg);
3571     if (!file_iformat) {
3572         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3573         return AVERROR(EINVAL);
3574     }
3575     return 0;
3576 }
3577
3578 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3579 {
3580     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3581     return opt_default(NULL, "pixel_format", arg);
3582 }
3583
3584 static int opt_sync(void *optctx, const char *opt, const char *arg)
3585 {
3586     if (!strcmp(arg, "audio"))
3587         av_sync_type = AV_SYNC_AUDIO_MASTER;
3588     else if (!strcmp(arg, "video"))
3589         av_sync_type = AV_SYNC_VIDEO_MASTER;
3590     else if (!strcmp(arg, "ext"))
3591         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3592     else {
3593         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3594         exit(1);
3595     }
3596     return 0;
3597 }
3598
3599 static int opt_seek(void *optctx, const char *opt, const char *arg)
3600 {
3601     start_time = parse_time_or_die(opt, arg, 1);
3602     return 0;
3603 }
3604
3605 static int opt_duration(void *optctx, const char *opt, const char *arg)
3606 {
3607     duration = parse_time_or_die(opt, arg, 1);
3608     return 0;
3609 }
3610
3611 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3612 {
3613     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3614                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3615                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3616                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3617     return 0;
3618 }
3619
3620 static void opt_input_file(void *optctx, const char *filename)
3621 {
3622     if (input_filename) {
3623         av_log(NULL, AV_LOG_FATAL,
3624                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3625                 filename, input_filename);
3626         exit(1);
3627     }
3628     if (!strcmp(filename, "-"))
3629         filename = "pipe:";
3630     input_filename = filename;
3631 }
3632
3633 static int opt_codec(void *optctx, const char *opt, const char *arg)
3634 {
3635    const char *spec = strchr(opt, ':');
3636    if (!spec) {
3637        av_log(NULL, AV_LOG_ERROR,
3638               "No media specifier was specified in '%s' in option '%s'\n",
3639                arg, opt);
3640        return AVERROR(EINVAL);
3641    }
3642    spec++;
3643    switch (spec[0]) {
3644    case 'a' :    audio_codec_name = arg; break;
3645    case 's' : subtitle_codec_name = arg; break;
3646    case 'v' :    video_codec_name = arg; break;
3647    default:
3648        av_log(NULL, AV_LOG_ERROR,
3649               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3650        return AVERROR(EINVAL);
3651    }
3652    return 0;
3653 }
3654
3655 static int dummy;
3656
3657 static const OptionDef options[] = {
3658 #include "cmdutils_common_opts.h"
3659     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3660     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3661     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3662     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3663     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3664     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3665     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3666     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3667     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3668     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3669     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3670     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3671     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3672     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3673     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3674     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3675     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3676     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3677     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3678     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3679     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3680     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3681     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3682     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3683     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3684     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3685     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3686     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3687     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3688 #if CONFIG_AVFILTER
3689     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3690     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3691 #endif
3692     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3693     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3694     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3695     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3696     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3697     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3698     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3699     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3700     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3701     { NULL, },
3702 };
3703
3704 static void show_usage(void)
3705 {
3706     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3707     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3708     av_log(NULL, AV_LOG_INFO, "\n");
3709 }
3710
3711 void show_help_default(const char *opt, const char *arg)
3712 {
3713     av_log_set_callback(log_callback_help);
3714     show_usage();
3715     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3716     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3717     printf("\n");
3718     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3719     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3720 #if !CONFIG_AVFILTER
3721     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3722 #else
3723     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3724 #endif
3725     printf("\nWhile playing:\n"
3726            "q, ESC              quit\n"
3727            "f                   toggle full screen\n"
3728            "p, SPC              pause\n"
3729            "m                   toggle mute\n"
3730            "9, 0                decrease and increase volume respectively\n"
3731            "/, *                decrease and increase volume respectively\n"
3732 &n