avcodec/error_resilience: support grayscale
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/colorspace.h"
35 #include "libavutil/eval.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/dict.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/avassert.h"
43 #include "libavutil/time.h"
44 #include "libavformat/avformat.h"
45 #include "libavdevice/avdevice.h"
46 #include "libswscale/swscale.h"
47 #include "libavutil/opt.h"
48 #include "libavcodec/avfft.h"
49 #include "libswresample/swresample.h"
50
51 #if CONFIG_AVFILTER
52 # include "libavfilter/avcodec.h"
53 # include "libavfilter/avfilter.h"
54 # include "libavfilter/buffersink.h"
55 # include "libavfilter/buffersrc.h"
56 #endif
57
58 #include <SDL.h>
59 #include <SDL_thread.h>
60
61 #include "cmdutils.h"
62
63 #include <assert.h>
64
65 const char program_name[] = "ffplay";
66 const int program_birth_year = 2003;
67
68 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
69 #define MIN_FRAMES 5
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 /* no AV sync correction is done if below the minimum AV sync threshold */
77 #define AV_SYNC_THRESHOLD_MIN 0.04
78 /* AV sync correction is done if above the maximum AV sync threshold */
79 #define AV_SYNC_THRESHOLD_MAX 0.1
80 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
81 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
82 /* no AV correction is done if too big error */
83 #define AV_NOSYNC_THRESHOLD 10.0
84
85 /* maximum audio speed change to get correct sync */
86 #define SAMPLE_CORRECTION_PERCENT_MAX 10
87
88 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
89 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
90 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
91 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
92
93 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
94 #define AUDIO_DIFF_AVG_NB   20
95
96 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
97 #define REFRESH_RATE 0.01
98
99 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
100 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
101 #define SAMPLE_ARRAY_SIZE (8 * 65536)
102
103 #define CURSOR_HIDE_DELAY 1000000
104
105 static int64_t sws_flags = SWS_BICUBIC;
106
107 typedef struct MyAVPacketList {
108     AVPacket pkt;
109     struct MyAVPacketList *next;
110     int serial;
111 } MyAVPacketList;
112
113 typedef struct PacketQueue {
114     MyAVPacketList *first_pkt, *last_pkt;
115     int nb_packets;
116     int size;
117     int abort_request;
118     int serial;
119     SDL_mutex *mutex;
120     SDL_cond *cond;
121 } PacketQueue;
122
123 #define VIDEO_PICTURE_QUEUE_SIZE 3
124 #define SUBPICTURE_QUEUE_SIZE 16
125 #define SAMPLE_QUEUE_SIZE 9
126 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
127
128 typedef struct AudioParams {
129     int freq;
130     int channels;
131     int64_t channel_layout;
132     enum AVSampleFormat fmt;
133     int frame_size;
134     int bytes_per_sec;
135 } AudioParams;
136
137 typedef struct Clock {
138     double pts;           /* clock base */
139     double pts_drift;     /* clock base minus time at which we updated the clock */
140     double last_updated;
141     double speed;
142     int serial;           /* clock is based on a packet with this serial */
143     int paused;
144     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
145 } Clock;
146
147 /* Common struct for handling all types of decoded data and allocated render buffers. */
148 typedef struct Frame {
149     AVFrame *frame;
150     AVSubtitle sub;
151     int serial;
152     double pts;           /* presentation timestamp for the frame */
153     double duration;      /* estimated duration of the frame */
154     int64_t pos;          /* byte position of the frame in the input file */
155     SDL_Overlay *bmp;
156     int allocated;
157     int reallocate;
158     int width;
159     int height;
160     AVRational sar;
161 } Frame;
162
163 typedef struct FrameQueue {
164     Frame queue[FRAME_QUEUE_SIZE];
165     int rindex;
166     int windex;
167     int size;
168     int max_size;
169     int keep_last;
170     int rindex_shown;
171     SDL_mutex *mutex;
172     SDL_cond *cond;
173     PacketQueue *pktq;
174 } FrameQueue;
175
176 enum {
177     AV_SYNC_AUDIO_MASTER, /* default choice */
178     AV_SYNC_VIDEO_MASTER,
179     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
180 };
181
182 typedef struct Decoder {
183     AVPacket pkt;
184     AVPacket pkt_temp;
185     PacketQueue *queue;
186     AVCodecContext *avctx;
187     int pkt_serial;
188     int finished;
189     int packet_pending;
190     SDL_cond *empty_queue_cond;
191     int64_t start_pts;
192     AVRational start_pts_tb;
193     int64_t next_pts;
194     AVRational next_pts_tb;
195     SDL_Thread *decoder_tid;
196 } Decoder;
197
198 typedef struct VideoState {
199     SDL_Thread *read_tid;
200     AVInputFormat *iformat;
201     int abort_request;
202     int force_refresh;
203     int paused;
204     int last_paused;
205     int queue_attachments_req;
206     int seek_req;
207     int seek_flags;
208     int64_t seek_pos;
209     int64_t seek_rel;
210     int read_pause_return;
211     AVFormatContext *ic;
212     int realtime;
213
214     Clock audclk;
215     Clock vidclk;
216     Clock extclk;
217
218     FrameQueue pictq;
219     FrameQueue subpq;
220     FrameQueue sampq;
221
222     Decoder auddec;
223     Decoder viddec;
224     Decoder subdec;
225
226     int audio_stream;
227
228     int av_sync_type;
229
230     double audio_clock;
231     int audio_clock_serial;
232     double audio_diff_cum; /* used for AV difference average computation */
233     double audio_diff_avg_coef;
234     double audio_diff_threshold;
235     int audio_diff_avg_count;
236     AVStream *audio_st;
237     PacketQueue audioq;
238     int audio_hw_buf_size;
239     uint8_t silence_buf[SDL_AUDIO_MIN_BUFFER_SIZE];
240     uint8_t *audio_buf;
241     uint8_t *audio_buf1;
242     unsigned int audio_buf_size; /* in bytes */
243     unsigned int audio_buf1_size;
244     int audio_buf_index; /* in bytes */
245     int audio_write_buf_size;
246     struct AudioParams audio_src;
247 #if CONFIG_AVFILTER
248     struct AudioParams audio_filter_src;
249 #endif
250     struct AudioParams audio_tgt;
251     struct SwrContext *swr_ctx;
252     int frame_drops_early;
253     int frame_drops_late;
254
255     enum ShowMode {
256         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
257     } show_mode;
258     int16_t sample_array[SAMPLE_ARRAY_SIZE];
259     int sample_array_index;
260     int last_i_start;
261     RDFTContext *rdft;
262     int rdft_bits;
263     FFTSample *rdft_data;
264     int xpos;
265     double last_vis_time;
266
267     int subtitle_stream;
268     AVStream *subtitle_st;
269     PacketQueue subtitleq;
270
271     double frame_timer;
272     double frame_last_returned_time;
273     double frame_last_filter_delay;
274     int video_stream;
275     AVStream *video_st;
276     PacketQueue videoq;
277     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
278 #if !CONFIG_AVFILTER
279     struct SwsContext *img_convert_ctx;
280 #endif
281     SDL_Rect last_display_rect;
282     int eof;
283
284     char filename[1024];
285     int width, height, xleft, ytop;
286     int step;
287
288 #if CONFIG_AVFILTER
289     int vfilter_idx;
290     AVFilterContext *in_video_filter;   // the first filter in the video chain
291     AVFilterContext *out_video_filter;  // the last filter in the video chain
292     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
293     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
294     AVFilterGraph *agraph;              // audio filter graph
295 #endif
296
297     int last_video_stream, last_audio_stream, last_subtitle_stream;
298
299     SDL_cond *continue_read_thread;
300 } VideoState;
301
302 /* options specified by the user */
303 static AVInputFormat *file_iformat;
304 static const char *input_filename;
305 static const char *window_title;
306 static int fs_screen_width;
307 static int fs_screen_height;
308 static int default_width  = 640;
309 static int default_height = 480;
310 static int screen_width  = 0;
311 static int screen_height = 0;
312 static int audio_disable;
313 static int video_disable;
314 static int subtitle_disable;
315 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
316 static int seek_by_bytes = -1;
317 static int display_disable;
318 static int show_status = 1;
319 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
320 static int64_t start_time = AV_NOPTS_VALUE;
321 static int64_t duration = AV_NOPTS_VALUE;
322 static int fast = 0;
323 static int genpts = 0;
324 static int lowres = 0;
325 static int decoder_reorder_pts = -1;
326 static int autoexit;
327 static int exit_on_keydown;
328 static int exit_on_mousedown;
329 static int loop = 1;
330 static int framedrop = -1;
331 static int infinite_buffer = -1;
332 static enum ShowMode show_mode = SHOW_MODE_NONE;
333 static const char *audio_codec_name;
334 static const char *subtitle_codec_name;
335 static const char *video_codec_name;
336 double rdftspeed = 0.02;
337 static int64_t cursor_last_shown;
338 static int cursor_hidden = 0;
339 #if CONFIG_AVFILTER
340 static const char **vfilters_list = NULL;
341 static int nb_vfilters = 0;
342 static char *afilters = NULL;
343 #endif
344 static int autorotate = 1;
345
346 /* current context */
347 static int is_full_screen;
348 static int64_t audio_callback_time;
349
350 static AVPacket flush_pkt;
351
352 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
353 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
354
355 static SDL_Surface *screen;
356
357 #if CONFIG_AVFILTER
358 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
359 {
360     GROW_ARRAY(vfilters_list, nb_vfilters);
361     vfilters_list[nb_vfilters - 1] = arg;
362     return 0;
363 }
364 #endif
365
366 static inline
367 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
368                    enum AVSampleFormat fmt2, int64_t channel_count2)
369 {
370     /* If channel count == 1, planar and non-planar formats are the same */
371     if (channel_count1 == 1 && channel_count2 == 1)
372         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
373     else
374         return channel_count1 != channel_count2 || fmt1 != fmt2;
375 }
376
377 static inline
378 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
379 {
380     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
381         return channel_layout;
382     else
383         return 0;
384 }
385
386 static void free_picture(Frame *vp);
387
388 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
389 {
390     MyAVPacketList *pkt1;
391
392     if (q->abort_request)
393        return -1;
394
395     pkt1 = av_malloc(sizeof(MyAVPacketList));
396     if (!pkt1)
397         return -1;
398     pkt1->pkt = *pkt;
399     pkt1->next = NULL;
400     if (pkt == &flush_pkt)
401         q->serial++;
402     pkt1->serial = q->serial;
403
404     if (!q->last_pkt)
405         q->first_pkt = pkt1;
406     else
407         q->last_pkt->next = pkt1;
408     q->last_pkt = pkt1;
409     q->nb_packets++;
410     q->size += pkt1->pkt.size + sizeof(*pkt1);
411     /* XXX: should duplicate packet data in DV case */
412     SDL_CondSignal(q->cond);
413     return 0;
414 }
415
416 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
417 {
418     int ret;
419
420     /* duplicate the packet */
421     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
422         return -1;
423
424     SDL_LockMutex(q->mutex);
425     ret = packet_queue_put_private(q, pkt);
426     SDL_UnlockMutex(q->mutex);
427
428     if (pkt != &flush_pkt && ret < 0)
429         av_free_packet(pkt);
430
431     return ret;
432 }
433
434 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
435 {
436     AVPacket pkt1, *pkt = &pkt1;
437     av_init_packet(pkt);
438     pkt->data = NULL;
439     pkt->size = 0;
440     pkt->stream_index = stream_index;
441     return packet_queue_put(q, pkt);
442 }
443
444 /* packet queue handling */
445 static void packet_queue_init(PacketQueue *q)
446 {
447     memset(q, 0, sizeof(PacketQueue));
448     q->mutex = SDL_CreateMutex();
449     q->cond = SDL_CreateCond();
450     q->abort_request = 1;
451 }
452
453 static void packet_queue_flush(PacketQueue *q)
454 {
455     MyAVPacketList *pkt, *pkt1;
456
457     SDL_LockMutex(q->mutex);
458     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
459         pkt1 = pkt->next;
460         av_free_packet(&pkt->pkt);
461         av_freep(&pkt);
462     }
463     q->last_pkt = NULL;
464     q->first_pkt = NULL;
465     q->nb_packets = 0;
466     q->size = 0;
467     SDL_UnlockMutex(q->mutex);
468 }
469
470 static void packet_queue_destroy(PacketQueue *q)
471 {
472     packet_queue_flush(q);
473     SDL_DestroyMutex(q->mutex);
474     SDL_DestroyCond(q->cond);
475 }
476
477 static void packet_queue_abort(PacketQueue *q)
478 {
479     SDL_LockMutex(q->mutex);
480
481     q->abort_request = 1;
482
483     SDL_CondSignal(q->cond);
484
485     SDL_UnlockMutex(q->mutex);
486 }
487
488 static void packet_queue_start(PacketQueue *q)
489 {
490     SDL_LockMutex(q->mutex);
491     q->abort_request = 0;
492     packet_queue_put_private(q, &flush_pkt);
493     SDL_UnlockMutex(q->mutex);
494 }
495
496 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
497 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
498 {
499     MyAVPacketList *pkt1;
500     int ret;
501
502     SDL_LockMutex(q->mutex);
503
504     for (;;) {
505         if (q->abort_request) {
506             ret = -1;
507             break;
508         }
509
510         pkt1 = q->first_pkt;
511         if (pkt1) {
512             q->first_pkt = pkt1->next;
513             if (!q->first_pkt)
514                 q->last_pkt = NULL;
515             q->nb_packets--;
516             q->size -= pkt1->pkt.size + sizeof(*pkt1);
517             *pkt = pkt1->pkt;
518             if (serial)
519                 *serial = pkt1->serial;
520             av_free(pkt1);
521             ret = 1;
522             break;
523         } else if (!block) {
524             ret = 0;
525             break;
526         } else {
527             SDL_CondWait(q->cond, q->mutex);
528         }
529     }
530     SDL_UnlockMutex(q->mutex);
531     return ret;
532 }
533
534 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
535     memset(d, 0, sizeof(Decoder));
536     d->avctx = avctx;
537     d->queue = queue;
538     d->empty_queue_cond = empty_queue_cond;
539     d->start_pts = AV_NOPTS_VALUE;
540 }
541
542 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
543     int got_frame = 0;
544
545     do {
546         int ret = -1;
547
548         if (d->queue->abort_request)
549             return -1;
550
551         if (!d->packet_pending || d->queue->serial != d->pkt_serial) {
552             AVPacket pkt;
553             do {
554                 if (d->queue->nb_packets == 0)
555                     SDL_CondSignal(d->empty_queue_cond);
556                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
557                     return -1;
558                 if (pkt.data == flush_pkt.data) {
559                     avcodec_flush_buffers(d->avctx);
560                     d->finished = 0;
561                     d->next_pts = d->start_pts;
562                     d->next_pts_tb = d->start_pts_tb;
563                 }
564             } while (pkt.data == flush_pkt.data || d->queue->serial != d->pkt_serial);
565             av_free_packet(&d->pkt);
566             d->pkt_temp = d->pkt = pkt;
567             d->packet_pending = 1;
568         }
569
570         switch (d->avctx->codec_type) {
571             case AVMEDIA_TYPE_VIDEO:
572                 ret = avcodec_decode_video2(d->avctx, frame, &got_frame, &d->pkt_temp);
573                 if (got_frame) {
574                     if (decoder_reorder_pts == -1) {
575                         frame->pts = av_frame_get_best_effort_timestamp(frame);
576                     } else if (decoder_reorder_pts) {
577                         frame->pts = frame->pkt_pts;
578                     } else {
579                         frame->pts = frame->pkt_dts;
580                     }
581                 }
582                 break;
583             case AVMEDIA_TYPE_AUDIO:
584                 ret = avcodec_decode_audio4(d->avctx, frame, &got_frame, &d->pkt_temp);
585                 if (got_frame) {
586                     AVRational tb = (AVRational){1, frame->sample_rate};
587                     if (frame->pts != AV_NOPTS_VALUE)
588                         frame->pts = av_rescale_q(frame->pts, d->avctx->time_base, tb);
589                     else if (frame->pkt_pts != AV_NOPTS_VALUE)
590                         frame->pts = av_rescale_q(frame->pkt_pts, av_codec_get_pkt_timebase(d->avctx), tb);
591                     else if (d->next_pts != AV_NOPTS_VALUE)
592                         frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
593                     if (frame->pts != AV_NOPTS_VALUE) {
594                         d->next_pts = frame->pts + frame->nb_samples;
595                         d->next_pts_tb = tb;
596                     }
597                 }
598                 break;
599             case AVMEDIA_TYPE_SUBTITLE:
600                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &d->pkt_temp);
601                 break;
602         }
603
604         if (ret < 0) {
605             d->packet_pending = 0;
606         } else {
607             d->pkt_temp.dts =
608             d->pkt_temp.pts = AV_NOPTS_VALUE;
609             if (d->pkt_temp.data) {
610                 if (d->avctx->codec_type != AVMEDIA_TYPE_AUDIO)
611                     ret = d->pkt_temp.size;
612                 d->pkt_temp.data += ret;
613                 d->pkt_temp.size -= ret;
614                 if (d->pkt_temp.size <= 0)
615                     d->packet_pending = 0;
616             } else {
617                 if (!got_frame) {
618                     d->packet_pending = 0;
619                     d->finished = d->pkt_serial;
620                 }
621             }
622         }
623     } while (!got_frame && !d->finished);
624
625     return got_frame;
626 }
627
628 static void decoder_destroy(Decoder *d) {
629     av_free_packet(&d->pkt);
630 }
631
632 static void frame_queue_unref_item(Frame *vp)
633 {
634     av_frame_unref(vp->frame);
635     avsubtitle_free(&vp->sub);
636 }
637
638 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
639 {
640     int i;
641     memset(f, 0, sizeof(FrameQueue));
642     if (!(f->mutex = SDL_CreateMutex()))
643         return AVERROR(ENOMEM);
644     if (!(f->cond = SDL_CreateCond()))
645         return AVERROR(ENOMEM);
646     f->pktq = pktq;
647     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
648     f->keep_last = !!keep_last;
649     for (i = 0; i < f->max_size; i++)
650         if (!(f->queue[i].frame = av_frame_alloc()))
651             return AVERROR(ENOMEM);
652     return 0;
653 }
654
655 static void frame_queue_destory(FrameQueue *f)
656 {
657     int i;
658     for (i = 0; i < f->max_size; i++) {
659         Frame *vp = &f->queue[i];
660         frame_queue_unref_item(vp);
661         av_frame_free(&vp->frame);
662         free_picture(vp);
663     }
664     SDL_DestroyMutex(f->mutex);
665     SDL_DestroyCond(f->cond);
666 }
667
668 static void frame_queue_signal(FrameQueue *f)
669 {
670     SDL_LockMutex(f->mutex);
671     SDL_CondSignal(f->cond);
672     SDL_UnlockMutex(f->mutex);
673 }
674
675 static Frame *frame_queue_peek(FrameQueue *f)
676 {
677     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
678 }
679
680 static Frame *frame_queue_peek_next(FrameQueue *f)
681 {
682     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
683 }
684
685 static Frame *frame_queue_peek_last(FrameQueue *f)
686 {
687     return &f->queue[f->rindex];
688 }
689
690 static Frame *frame_queue_peek_writable(FrameQueue *f)
691 {
692     /* wait until we have space to put a new frame */
693     SDL_LockMutex(f->mutex);
694     while (f->size >= f->max_size &&
695            !f->pktq->abort_request) {
696         SDL_CondWait(f->cond, f->mutex);
697     }
698     SDL_UnlockMutex(f->mutex);
699
700     if (f->pktq->abort_request)
701         return NULL;
702
703     return &f->queue[f->windex];
704 }
705
706 static Frame *frame_queue_peek_readable(FrameQueue *f)
707 {
708     /* wait until we have a readable a new frame */
709     SDL_LockMutex(f->mutex);
710     while (f->size - f->rindex_shown <= 0 &&
711            !f->pktq->abort_request) {
712         SDL_CondWait(f->cond, f->mutex);
713     }
714     SDL_UnlockMutex(f->mutex);
715
716     if (f->pktq->abort_request)
717         return NULL;
718
719     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
720 }
721
722 static void frame_queue_push(FrameQueue *f)
723 {
724     if (++f->windex == f->max_size)
725         f->windex = 0;
726     SDL_LockMutex(f->mutex);
727     f->size++;
728     SDL_CondSignal(f->cond);
729     SDL_UnlockMutex(f->mutex);
730 }
731
732 static void frame_queue_next(FrameQueue *f)
733 {
734     if (f->keep_last && !f->rindex_shown) {
735         f->rindex_shown = 1;
736         return;
737     }
738     frame_queue_unref_item(&f->queue[f->rindex]);
739     if (++f->rindex == f->max_size)
740         f->rindex = 0;
741     SDL_LockMutex(f->mutex);
742     f->size--;
743     SDL_CondSignal(f->cond);
744     SDL_UnlockMutex(f->mutex);
745 }
746
747 /* jump back to the previous frame if available by resetting rindex_shown */
748 static int frame_queue_prev(FrameQueue *f)
749 {
750     int ret = f->rindex_shown;
751     f->rindex_shown = 0;
752     return ret;
753 }
754
755 /* return the number of undisplayed frames in the queue */
756 static int frame_queue_nb_remaining(FrameQueue *f)
757 {
758     return f->size - f->rindex_shown;
759 }
760
761 /* return last shown position */
762 static int64_t frame_queue_last_pos(FrameQueue *f)
763 {
764     Frame *fp = &f->queue[f->rindex];
765     if (f->rindex_shown && fp->serial == f->pktq->serial)
766         return fp->pos;
767     else
768         return -1;
769 }
770
771 static void decoder_abort(Decoder *d, FrameQueue *fq)
772 {
773     packet_queue_abort(d->queue);
774     frame_queue_signal(fq);
775     SDL_WaitThread(d->decoder_tid, NULL);
776     d->decoder_tid = NULL;
777     packet_queue_flush(d->queue);
778 }
779
780 static inline void fill_rectangle(SDL_Surface *screen,
781                                   int x, int y, int w, int h, int color, int update)
782 {
783     SDL_Rect rect;
784     rect.x = x;
785     rect.y = y;
786     rect.w = w;
787     rect.h = h;
788     SDL_FillRect(screen, &rect, color);
789     if (update && w > 0 && h > 0)
790         SDL_UpdateRect(screen, x, y, w, h);
791 }
792
793 /* draw only the border of a rectangle */
794 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
795 {
796     int w1, w2, h1, h2;
797
798     /* fill the background */
799     w1 = x;
800     if (w1 < 0)
801         w1 = 0;
802     w2 = width - (x + w);
803     if (w2 < 0)
804         w2 = 0;
805     h1 = y;
806     if (h1 < 0)
807         h1 = 0;
808     h2 = height - (y + h);
809     if (h2 < 0)
810         h2 = 0;
811     fill_rectangle(screen,
812                    xleft, ytop,
813                    w1, height,
814                    color, update);
815     fill_rectangle(screen,
816                    xleft + width - w2, ytop,
817                    w2, height,
818                    color, update);
819     fill_rectangle(screen,
820                    xleft + w1, ytop,
821                    width - w1 - w2, h1,
822                    color, update);
823     fill_rectangle(screen,
824                    xleft + w1, ytop + height - h2,
825                    width - w1 - w2, h2,
826                    color, update);
827 }
828
829 #define ALPHA_BLEND(a, oldp, newp, s)\
830 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
831
832 #define RGBA_IN(r, g, b, a, s)\
833 {\
834     unsigned int v = ((const uint32_t *)(s))[0];\
835     a = (v >> 24) & 0xff;\
836     r = (v >> 16) & 0xff;\
837     g = (v >> 8) & 0xff;\
838     b = v & 0xff;\
839 }
840
841 #define YUVA_IN(y, u, v, a, s, pal)\
842 {\
843     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
844     a = (val >> 24) & 0xff;\
845     y = (val >> 16) & 0xff;\
846     u = (val >> 8) & 0xff;\
847     v = val & 0xff;\
848 }
849
850 #define YUVA_OUT(d, y, u, v, a)\
851 {\
852     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
853 }
854
855
856 #define BPP 1
857
858 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
859 {
860     int wrap, wrap3, width2, skip2;
861     int y, u, v, a, u1, v1, a1, w, h;
862     uint8_t *lum, *cb, *cr;
863     const uint8_t *p;
864     const uint32_t *pal;
865     int dstx, dsty, dstw, dsth;
866
867     dstw = av_clip(rect->w, 0, imgw);
868     dsth = av_clip(rect->h, 0, imgh);
869     dstx = av_clip(rect->x, 0, imgw - dstw);
870     dsty = av_clip(rect->y, 0, imgh - dsth);
871     lum = dst->data[0] + dsty * dst->linesize[0];
872     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
873     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
874
875     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
876     skip2 = dstx >> 1;
877     wrap = dst->linesize[0];
878     wrap3 = rect->pict.linesize[0];
879     p = rect->pict.data[0];
880     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
881
882     if (dsty & 1) {
883         lum += dstx;
884         cb += skip2;
885         cr += skip2;
886
887         if (dstx & 1) {
888             YUVA_IN(y, u, v, a, p, pal);
889             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
890             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
891             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
892             cb++;
893             cr++;
894             lum++;
895             p += BPP;
896         }
897         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
898             YUVA_IN(y, u, v, a, p, pal);
899             u1 = u;
900             v1 = v;
901             a1 = a;
902             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
903
904             YUVA_IN(y, u, v, a, p + BPP, pal);
905             u1 += u;
906             v1 += v;
907             a1 += a;
908             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
909             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
910             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
911             cb++;
912             cr++;
913             p += 2 * BPP;
914             lum += 2;
915         }
916         if (w) {
917             YUVA_IN(y, u, v, a, p, pal);
918             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
919             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
920             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
921             p++;
922             lum++;
923         }
924         p += wrap3 - dstw * BPP;
925         lum += wrap - dstw - dstx;
926         cb += dst->linesize[1] - width2 - skip2;
927         cr += dst->linesize[2] - width2 - skip2;
928     }
929     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
930         lum += dstx;
931         cb += skip2;
932         cr += skip2;
933
934         if (dstx & 1) {
935             YUVA_IN(y, u, v, a, p, pal);
936             u1 = u;
937             v1 = v;
938             a1 = a;
939             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
940             p += wrap3;
941             lum += wrap;
942             YUVA_IN(y, u, v, a, p, pal);
943             u1 += u;
944             v1 += v;
945             a1 += a;
946             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
947             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
948             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
949             cb++;
950             cr++;
951             p += -wrap3 + BPP;
952             lum += -wrap + 1;
953         }
954         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
955             YUVA_IN(y, u, v, a, p, pal);
956             u1 = u;
957             v1 = v;
958             a1 = a;
959             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
960
961             YUVA_IN(y, u, v, a, p + BPP, pal);
962             u1 += u;
963             v1 += v;
964             a1 += a;
965             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
966             p += wrap3;
967             lum += wrap;
968
969             YUVA_IN(y, u, v, a, p, pal);
970             u1 += u;
971             v1 += v;
972             a1 += a;
973             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
974
975             YUVA_IN(y, u, v, a, p + BPP, pal);
976             u1 += u;
977             v1 += v;
978             a1 += a;
979             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
980
981             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
982             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
983
984             cb++;
985             cr++;
986             p += -wrap3 + 2 * BPP;
987             lum += -wrap + 2;
988         }
989         if (w) {
990             YUVA_IN(y, u, v, a, p, pal);
991             u1 = u;
992             v1 = v;
993             a1 = a;
994             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
995             p += wrap3;
996             lum += wrap;
997             YUVA_IN(y, u, v, a, p, pal);
998             u1 += u;
999             v1 += v;
1000             a1 += a;
1001             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1002             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
1003             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
1004             cb++;
1005             cr++;
1006             p += -wrap3 + BPP;
1007             lum += -wrap + 1;
1008         }
1009         p += wrap3 + (wrap3 - dstw * BPP);
1010         lum += wrap + (wrap - dstw - dstx);
1011         cb += dst->linesize[1] - width2 - skip2;
1012         cr += dst->linesize[2] - width2 - skip2;
1013     }
1014     /* handle odd height */
1015     if (h) {
1016         lum += dstx;
1017         cb += skip2;
1018         cr += skip2;
1019
1020         if (dstx & 1) {
1021             YUVA_IN(y, u, v, a, p, pal);
1022             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1023             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1024             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1025             cb++;
1026             cr++;
1027             lum++;
1028             p += BPP;
1029         }
1030         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
1031             YUVA_IN(y, u, v, a, p, pal);
1032             u1 = u;
1033             v1 = v;
1034             a1 = a;
1035             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1036
1037             YUVA_IN(y, u, v, a, p + BPP, pal);
1038             u1 += u;
1039             v1 += v;
1040             a1 += a;
1041             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
1042             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
1043             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
1044             cb++;
1045             cr++;
1046             p += 2 * BPP;
1047             lum += 2;
1048         }
1049         if (w) {
1050             YUVA_IN(y, u, v, a, p, pal);
1051             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1052             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1053             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1054         }
1055     }
1056 }
1057
1058 static void free_picture(Frame *vp)
1059 {
1060      if (vp->bmp) {
1061          SDL_FreeYUVOverlay(vp->bmp);
1062          vp->bmp = NULL;
1063      }
1064 }
1065
1066 static void calculate_display_rect(SDL_Rect *rect,
1067                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
1068                                    int pic_width, int pic_height, AVRational pic_sar)
1069 {
1070     float aspect_ratio;
1071     int width, height, x, y;
1072
1073     if (pic_sar.num == 0)
1074         aspect_ratio = 0;
1075     else
1076         aspect_ratio = av_q2d(pic_sar);
1077
1078     if (aspect_ratio <= 0.0)
1079         aspect_ratio = 1.0;
1080     aspect_ratio *= (float)pic_width / (float)pic_height;
1081
1082     /* XXX: we suppose the screen has a 1.0 pixel ratio */
1083     height = scr_height;
1084     width = ((int)rint(height * aspect_ratio)) & ~1;
1085     if (width > scr_width) {
1086         width = scr_width;
1087         height = ((int)rint(width / aspect_ratio)) & ~1;
1088     }
1089     x = (scr_width - width) / 2;
1090     y = (scr_height - height) / 2;
1091     rect->x = scr_xleft + x;
1092     rect->y = scr_ytop  + y;
1093     rect->w = FFMAX(width,  1);
1094     rect->h = FFMAX(height, 1);
1095 }
1096
1097 static void video_image_display(VideoState *is)
1098 {
1099     Frame *vp;
1100     Frame *sp;
1101     AVPicture pict;
1102     SDL_Rect rect;
1103     int i;
1104
1105     vp = frame_queue_peek(&is->pictq);
1106     if (vp->bmp) {
1107         if (is->subtitle_st) {
1108             if (frame_queue_nb_remaining(&is->subpq) > 0) {
1109                 sp = frame_queue_peek(&is->subpq);
1110
1111                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
1112                     SDL_LockYUVOverlay (vp->bmp);
1113
1114                     pict.data[0] = vp->bmp->pixels[0];
1115                     pict.data[1] = vp->bmp->pixels[2];
1116                     pict.data[2] = vp->bmp->pixels[1];
1117
1118                     pict.linesize[0] = vp->bmp->pitches[0];
1119                     pict.linesize[1] = vp->bmp->pitches[2];
1120                     pict.linesize[2] = vp->bmp->pitches[1];
1121
1122                     for (i = 0; i < sp->sub.num_rects; i++)
1123                         blend_subrect(&pict, sp->sub.rects[i],
1124                                       vp->bmp->w, vp->bmp->h);
1125
1126                     SDL_UnlockYUVOverlay (vp->bmp);
1127                 }
1128             }
1129         }
1130
1131         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1132
1133         SDL_DisplayYUVOverlay(vp->bmp, &rect);
1134
1135         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) {
1136             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1137             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
1138             is->last_display_rect = rect;
1139         }
1140     }
1141 }
1142
1143 static inline int compute_mod(int a, int b)
1144 {
1145     return a < 0 ? a%b + b : a%b;
1146 }
1147
1148 static void video_audio_display(VideoState *s)
1149 {
1150     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1151     int ch, channels, h, h2, bgcolor, fgcolor;
1152     int64_t time_diff;
1153     int rdft_bits, nb_freq;
1154
1155     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1156         ;
1157     nb_freq = 1 << (rdft_bits - 1);
1158
1159     /* compute display index : center on currently output samples */
1160     channels = s->audio_tgt.channels;
1161     nb_display_channels = channels;
1162     if (!s->paused) {
1163         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1164         n = 2 * channels;
1165         delay = s->audio_write_buf_size;
1166         delay /= n;
1167
1168         /* to be more precise, we take into account the time spent since
1169            the last buffer computation */
1170         if (audio_callback_time) {
1171             time_diff = av_gettime_relative() - audio_callback_time;
1172             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1173         }
1174
1175         delay += 2 * data_used;
1176         if (delay < data_used)
1177             delay = data_used;
1178
1179         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1180         if (s->show_mode == SHOW_MODE_WAVES) {
1181             h = INT_MIN;
1182             for (i = 0; i < 1000; i += channels) {
1183                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1184                 int a = s->sample_array[idx];
1185                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1186                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1187                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1188                 int score = a - d;
1189                 if (h < score && (b ^ c) < 0) {
1190                     h = score;
1191                     i_start = idx;
1192                 }
1193             }
1194         }
1195
1196         s->last_i_start = i_start;
1197     } else {
1198         i_start = s->last_i_start;
1199     }
1200
1201     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1202     if (s->show_mode == SHOW_MODE_WAVES) {
1203         fill_rectangle(screen,
1204                        s->xleft, s->ytop, s->width, s->height,
1205                        bgcolor, 0);
1206
1207         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
1208
1209         /* total height for one channel */
1210         h = s->height / nb_display_channels;
1211         /* graph height / 2 */
1212         h2 = (h * 9) / 20;
1213         for (ch = 0; ch < nb_display_channels; ch++) {
1214             i = i_start + ch;
1215             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1216             for (x = 0; x < s->width; x++) {
1217                 y = (s->sample_array[i] * h2) >> 15;
1218                 if (y < 0) {
1219                     y = -y;
1220                     ys = y1 - y;
1221                 } else {
1222                     ys = y1;
1223                 }
1224                 fill_rectangle(screen,
1225                                s->xleft + x, ys, 1, y,
1226                                fgcolor, 0);
1227                 i += channels;
1228                 if (i >= SAMPLE_ARRAY_SIZE)
1229                     i -= SAMPLE_ARRAY_SIZE;
1230             }
1231         }
1232
1233         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
1234
1235         for (ch = 1; ch < nb_display_channels; ch++) {
1236             y = s->ytop + ch * h;
1237             fill_rectangle(screen,
1238                            s->xleft, y, s->width, 1,
1239                            fgcolor, 0);
1240         }
1241         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
1242     } else {
1243         nb_display_channels= FFMIN(nb_display_channels, 2);
1244         if (rdft_bits != s->rdft_bits) {
1245             av_rdft_end(s->rdft);
1246             av_free(s->rdft_data);
1247             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1248             s->rdft_bits = rdft_bits;
1249             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1250         }
1251         if (!s->rdft || !s->rdft_data){
1252             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1253             s->show_mode = SHOW_MODE_WAVES;
1254         } else {
1255             FFTSample *data[2];
1256             for (ch = 0; ch < nb_display_channels; ch++) {
1257                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1258                 i = i_start + ch;
1259                 for (x = 0; x < 2 * nb_freq; x++) {
1260                     double w = (x-nb_freq) * (1.0 / nb_freq);
1261                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1262                     i += channels;
1263                     if (i >= SAMPLE_ARRAY_SIZE)
1264                         i -= SAMPLE_ARRAY_SIZE;
1265                 }
1266                 av_rdft_calc(s->rdft, data[ch]);
1267             }
1268             /* Least efficient way to do this, we should of course
1269              * directly access it but it is more than fast enough. */
1270             for (y = 0; y < s->height; y++) {
1271                 double w = 1 / sqrt(nb_freq);
1272                 int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
1273                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1274                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1275                 a = FFMIN(a, 255);
1276                 b = FFMIN(b, 255);
1277                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1278
1279                 fill_rectangle(screen,
1280                             s->xpos, s->height-y, 1, 1,
1281                             fgcolor, 0);
1282             }
1283         }
1284         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1285         if (!s->paused)
1286             s->xpos++;
1287         if (s->xpos >= s->width)
1288             s->xpos= s->xleft;
1289     }
1290 }
1291
1292 static void stream_close(VideoState *is)
1293 {
1294     /* XXX: use a special url_shutdown call to abort parse cleanly */
1295     is->abort_request = 1;
1296     SDL_WaitThread(is->read_tid, NULL);
1297     packet_queue_destroy(&is->videoq);
1298     packet_queue_destroy(&is->audioq);
1299     packet_queue_destroy(&is->subtitleq);
1300
1301     /* free all pictures */
1302     frame_queue_destory(&is->pictq);
1303     frame_queue_destory(&is->sampq);
1304     frame_queue_destory(&is->subpq);
1305     SDL_DestroyCond(is->continue_read_thread);
1306 #if !CONFIG_AVFILTER
1307     sws_freeContext(is->img_convert_ctx);
1308 #endif
1309     av_free(is);
1310 }
1311
1312 static void do_exit(VideoState *is)
1313 {
1314     if (is) {
1315         stream_close(is);
1316     }
1317     av_lockmgr_register(NULL);
1318     uninit_opts();
1319 #if CONFIG_AVFILTER
1320     av_freep(&vfilters_list);
1321 #endif
1322     avformat_network_deinit();
1323     if (show_status)
1324         printf("\n");
1325     SDL_Quit();
1326     av_log(NULL, AV_LOG_QUIET, "%s", "");
1327     exit(0);
1328 }
1329
1330 static void sigterm_handler(int sig)
1331 {
1332     exit(123);
1333 }
1334
1335 static void set_default_window_size(int width, int height, AVRational sar)
1336 {
1337     SDL_Rect rect;
1338     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1339     default_width  = rect.w;
1340     default_height = rect.h;
1341 }
1342
1343 static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
1344 {
1345     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1346     int w,h;
1347
1348     if (is_full_screen) flags |= SDL_FULLSCREEN;
1349     else                flags |= SDL_RESIZABLE;
1350
1351     if (vp && vp->width)
1352         set_default_window_size(vp->width, vp->height, vp->sar);
1353
1354     if (is_full_screen && fs_screen_width) {
1355         w = fs_screen_width;
1356         h = fs_screen_height;
1357     } else if (!is_full_screen && screen_width) {
1358         w = screen_width;
1359         h = screen_height;
1360     } else {
1361         w = default_width;
1362         h = default_height;
1363     }
1364     w = FFMIN(16383, w);
1365     if (screen && is->width == screen->w && screen->w == w
1366        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1367         return 0;
1368     screen = SDL_SetVideoMode(w, h, 0, flags);
1369     if (!screen) {
1370         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1371         do_exit(is);
1372     }
1373     if (!window_title)
1374         window_title = input_filename;
1375     SDL_WM_SetCaption(window_title, window_title);
1376
1377     is->width  = screen->w;
1378     is->height = screen->h;
1379
1380     return 0;
1381 }
1382
1383 /* display the current picture, if any */
1384 static void video_display(VideoState *is)
1385 {
1386     if (!screen)
1387         video_open(is, 0, NULL);
1388     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1389         video_audio_display(is);
1390     else if (is->video_st)
1391         video_image_display(is);
1392 }
1393
1394 static double get_clock(Clock *c)
1395 {
1396     if (*c->queue_serial != c->serial)
1397         return NAN;
1398     if (c->paused) {
1399         return c->pts;
1400     } else {
1401         double time = av_gettime_relative() / 1000000.0;
1402         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1403     }
1404 }
1405
1406 static void set_clock_at(Clock *c, double pts, int serial, double time)
1407 {
1408     c->pts = pts;
1409     c->last_updated = time;
1410     c->pts_drift = c->pts - time;
1411     c->serial = serial;
1412 }
1413
1414 static void set_clock(Clock *c, double pts, int serial)
1415 {
1416     double time = av_gettime_relative() / 1000000.0;
1417     set_clock_at(c, pts, serial, time);
1418 }
1419
1420 static void set_clock_speed(Clock *c, double speed)
1421 {
1422     set_clock(c, get_clock(c), c->serial);
1423     c->speed = speed;
1424 }
1425
1426 static void init_clock(Clock *c, int *queue_serial)
1427 {
1428     c->speed = 1.0;
1429     c->paused = 0;
1430     c->queue_serial = queue_serial;
1431     set_clock(c, NAN, -1);
1432 }
1433
1434 static void sync_clock_to_slave(Clock *c, Clock *slave)
1435 {
1436     double clock = get_clock(c);
1437     double slave_clock = get_clock(slave);
1438     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1439         set_clock(c, slave_clock, slave->serial);
1440 }
1441
1442 static int get_master_sync_type(VideoState *is) {
1443     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1444         if (is->video_st)
1445             return AV_SYNC_VIDEO_MASTER;
1446         else
1447             return AV_SYNC_AUDIO_MASTER;
1448     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1449         if (is->audio_st)
1450             return AV_SYNC_AUDIO_MASTER;
1451         else
1452             return AV_SYNC_EXTERNAL_CLOCK;
1453     } else {
1454         return AV_SYNC_EXTERNAL_CLOCK;
1455     }
1456 }
1457
1458 /* get the current master clock value */
1459 static double get_master_clock(VideoState *is)
1460 {
1461     double val;
1462
1463     switch (get_master_sync_type(is)) {
1464         case AV_SYNC_VIDEO_MASTER:
1465             val = get_clock(&is->vidclk);
1466             break;
1467         case AV_SYNC_AUDIO_MASTER:
1468             val = get_clock(&is->audclk);
1469             break;
1470         default:
1471             val = get_clock(&is->extclk);
1472             break;
1473     }
1474     return val;
1475 }
1476
1477 static void check_external_clock_speed(VideoState *is) {
1478    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1479        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1480        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1481    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1482               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1483        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1484    } else {
1485        double speed = is->extclk.speed;
1486        if (speed != 1.0)
1487            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1488    }
1489 }
1490
1491 /* seek in the stream */
1492 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1493 {
1494     if (!is->seek_req) {
1495         is->seek_pos = pos;
1496         is->seek_rel = rel;
1497         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1498         if (seek_by_bytes)
1499             is->seek_flags |= AVSEEK_FLAG_BYTE;
1500         is->seek_req = 1;
1501         SDL_CondSignal(is->continue_read_thread);
1502     }
1503 }
1504
1505 /* pause or resume the video */
1506 static void stream_toggle_pause(VideoState *is)
1507 {
1508     if (is->paused) {
1509         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1510         if (is->read_pause_return != AVERROR(ENOSYS)) {
1511             is->vidclk.paused = 0;
1512         }
1513         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1514     }
1515     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1516     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1517 }
1518
1519 static void toggle_pause(VideoState *is)
1520 {
1521     stream_toggle_pause(is);
1522     is->step = 0;
1523 }
1524
1525 static void step_to_next_frame(VideoState *is)
1526 {
1527     /* if the stream is paused unpause it, then step */
1528     if (is->paused)
1529         stream_toggle_pause(is);
1530     is->step = 1;
1531 }
1532
1533 static double compute_target_delay(double delay, VideoState *is)
1534 {
1535     double sync_threshold, diff = 0;
1536
1537     /* update delay to follow master synchronisation source */
1538     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1539         /* if video is slave, we try to correct big delays by
1540            duplicating or deleting a frame */
1541         diff = get_clock(&is->vidclk) - get_master_clock(is);
1542
1543         /* skip or repeat frame. We take into account the
1544            delay to compute the threshold. I still don't know
1545            if it is the best guess */
1546         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1547         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1548             if (diff <= -sync_threshold)
1549                 delay = FFMAX(0, delay + diff);
1550             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1551                 delay = delay + diff;
1552             else if (diff >= sync_threshold)
1553                 delay = 2 * delay;
1554         }
1555     }
1556
1557     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1558             delay, -diff);
1559
1560     return delay;
1561 }
1562
1563 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1564     if (vp->serial == nextvp->serial) {
1565         double duration = nextvp->pts - vp->pts;
1566         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1567             return vp->duration;
1568         else
1569             return duration;
1570     } else {
1571         return 0.0;
1572     }
1573 }
1574
1575 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1576     /* update current video pts */
1577     set_clock(&is->vidclk, pts, serial);
1578     sync_clock_to_slave(&is->extclk, &is->vidclk);
1579 }
1580
1581 /* called to display each frame */
1582 static void video_refresh(void *opaque, double *remaining_time)
1583 {
1584     VideoState *is = opaque;
1585     double time;
1586
1587     Frame *sp, *sp2;
1588
1589     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1590         check_external_clock_speed(is);
1591
1592     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1593         time = av_gettime_relative() / 1000000.0;
1594         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1595             video_display(is);
1596             is->last_vis_time = time;
1597         }
1598         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1599     }
1600
1601     if (is->video_st) {
1602         int redisplay = 0;
1603         if (is->force_refresh)
1604             redisplay = frame_queue_prev(&is->pictq);
1605 retry:
1606         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1607             // nothing to do, no picture to display in the queue
1608         } else {
1609             double last_duration, duration, delay;
1610             Frame *vp, *lastvp;
1611
1612             /* dequeue the picture */
1613             lastvp = frame_queue_peek_last(&is->pictq);
1614             vp = frame_queue_peek(&is->pictq);
1615
1616             if (vp->serial != is->videoq.serial) {
1617                 frame_queue_next(&is->pictq);
1618                 redisplay = 0;
1619                 goto retry;
1620             }
1621
1622             if (lastvp->serial != vp->serial && !redisplay)
1623                 is->frame_timer = av_gettime_relative() / 1000000.0;
1624
1625             if (is->paused)
1626                 goto display;
1627
1628             /* compute nominal last_duration */
1629             last_duration = vp_duration(is, lastvp, vp);
1630             if (redisplay)
1631                 delay = 0.0;
1632             else
1633                 delay = compute_target_delay(last_duration, is);
1634
1635             time= av_gettime_relative()/1000000.0;
1636             if (time < is->frame_timer + delay && !redisplay) {
1637                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1638                 return;
1639             }
1640
1641             is->frame_timer += delay;
1642             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1643                 is->frame_timer = time;
1644
1645             SDL_LockMutex(is->pictq.mutex);
1646             if (!redisplay && !isnan(vp->pts))
1647                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1648             SDL_UnlockMutex(is->pictq.mutex);
1649
1650             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1651                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1652                 duration = vp_duration(is, vp, nextvp);
1653                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1654                     if (!redisplay)
1655                         is->frame_drops_late++;
1656                     frame_queue_next(&is->pictq);
1657                     redisplay = 0;
1658                     goto retry;
1659                 }
1660             }
1661
1662             if (is->subtitle_st) {
1663                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1664                         sp = frame_queue_peek(&is->subpq);
1665
1666                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1667                             sp2 = frame_queue_peek_next(&is->subpq);
1668                         else
1669                             sp2 = NULL;
1670
1671                         if (sp->serial != is->subtitleq.serial
1672                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1673                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1674                         {
1675                             frame_queue_next(&is->subpq);
1676                         } else {
1677                             break;
1678                         }
1679                     }
1680             }
1681
1682 display:
1683             /* display picture */
1684             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1685                 video_display(is);
1686
1687             frame_queue_next(&is->pictq);
1688
1689             if (is->step && !is->paused)
1690                 stream_toggle_pause(is);
1691         }
1692     }
1693     is->force_refresh = 0;
1694     if (show_status) {
1695         static int64_t last_time;
1696         int64_t cur_time;
1697         int aqsize, vqsize, sqsize;
1698         double av_diff;
1699
1700         cur_time = av_gettime_relative();
1701         if (!last_time || (cur_time - last_time) >= 30000) {
1702             aqsize = 0;
1703             vqsize = 0;
1704             sqsize = 0;
1705             if (is->audio_st)
1706                 aqsize = is->audioq.size;
1707             if (is->video_st)
1708                 vqsize = is->videoq.size;
1709             if (is->subtitle_st)
1710                 sqsize = is->subtitleq.size;
1711             av_diff = 0;
1712             if (is->audio_st && is->video_st)
1713                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1714             else if (is->video_st)
1715                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1716             else if (is->audio_st)
1717                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1718             av_log(NULL, AV_LOG_INFO,
1719                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1720                    get_master_clock(is),
1721                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1722                    av_diff,
1723                    is->frame_drops_early + is->frame_drops_late,
1724                    aqsize / 1024,
1725                    vqsize / 1024,
1726                    sqsize,
1727                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1728                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1729             fflush(stdout);
1730             last_time = cur_time;
1731         }
1732     }
1733 }
1734
1735 /* allocate a picture (needs to do that in main thread to avoid
1736    potential locking problems */
1737 static void alloc_picture(VideoState *is)
1738 {
1739     Frame *vp;
1740     int64_t bufferdiff;
1741
1742     vp = &is->pictq.queue[is->pictq.windex];
1743
1744     free_picture(vp);
1745
1746     video_open(is, 0, vp);
1747
1748     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1749                                    SDL_YV12_OVERLAY,
1750                                    screen);
1751     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1752     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1753         /* SDL allocates a buffer smaller than requested if the video
1754          * overlay hardware is unable to support the requested size. */
1755         av_log(NULL, AV_LOG_FATAL,
1756                "Error: the video system does not support an image\n"
1757                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1758                         "to reduce the image size.\n", vp->width, vp->height );
1759         do_exit(is);
1760     }
1761
1762     SDL_LockMutex(is->pictq.mutex);
1763     vp->allocated = 1;
1764     SDL_CondSignal(is->pictq.cond);
1765     SDL_UnlockMutex(is->pictq.mutex);
1766 }
1767
1768 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1769     int i, width, height;
1770     Uint8 *p, *maxp;
1771     for (i = 0; i < 3; i++) {
1772         width  = bmp->w;
1773         height = bmp->h;
1774         if (i > 0) {
1775             width  >>= 1;
1776             height >>= 1;
1777         }
1778         if (bmp->pitches[i] > width) {
1779             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1780             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1781                 *(p+1) = *p;
1782         }
1783     }
1784 }
1785
1786 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1787 {
1788     Frame *vp;
1789
1790 #if defined(DEBUG_SYNC) && 0
1791     printf("frame_type=%c pts=%0.3f\n",
1792            av_get_picture_type_char(src_frame->pict_type), pts);
1793 #endif
1794
1795     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1796         return -1;
1797
1798     vp->sar = src_frame->sample_aspect_ratio;
1799
1800     /* alloc or resize hardware picture buffer */
1801     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1802         vp->width  != src_frame->width ||
1803         vp->height != src_frame->height) {
1804         SDL_Event event;
1805
1806         vp->allocated  = 0;
1807         vp->reallocate = 0;
1808         vp->width = src_frame->width;
1809         vp->height = src_frame->height;
1810
1811         /* the allocation must be done in the main thread to avoid
1812            locking problems. */
1813         event.type = FF_ALLOC_EVENT;
1814         event.user.data1 = is;
1815         SDL_PushEvent(&event);
1816
1817         /* wait until the picture is allocated */
1818         SDL_LockMutex(is->pictq.mutex);
1819         while (!vp->allocated && !is->videoq.abort_request) {
1820             SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1821         }
1822         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1823         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1824             while (!vp->allocated && !is->abort_request) {
1825                 SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1826             }
1827         }
1828         SDL_UnlockMutex(is->pictq.mutex);
1829
1830         if (is->videoq.abort_request)
1831             return -1;
1832     }
1833
1834     /* if the frame is not skipped, then display it */
1835     if (vp->bmp) {
1836         AVPicture pict = { { 0 } };
1837
1838         /* get a pointer on the bitmap */
1839         SDL_LockYUVOverlay (vp->bmp);
1840
1841         pict.data[0] = vp->bmp->pixels[0];
1842         pict.data[1] = vp->bmp->pixels[2];
1843         pict.data[2] = vp->bmp->pixels[1];
1844
1845         pict.linesize[0] = vp->bmp->pitches[0];
1846         pict.linesize[1] = vp->bmp->pitches[2];
1847         pict.linesize[2] = vp->bmp->pitches[1];
1848
1849 #if CONFIG_AVFILTER
1850         // FIXME use direct rendering
1851         av_picture_copy(&pict, (AVPicture *)src_frame,
1852                         src_frame->format, vp->width, vp->height);
1853 #else
1854         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1855         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1856             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1857             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1858         if (!is->img_convert_ctx) {
1859             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1860             exit(1);
1861         }
1862         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1863                   0, vp->height, pict.data, pict.linesize);
1864 #endif
1865         /* workaround SDL PITCH_WORKAROUND */
1866         duplicate_right_border_pixels(vp->bmp);
1867         /* update the bitmap content */
1868         SDL_UnlockYUVOverlay(vp->bmp);
1869
1870         vp->pts = pts;
1871         vp->duration = duration;
1872         vp->pos = pos;
1873         vp->serial = serial;
1874
1875         /* now we can update the picture count */
1876         frame_queue_push(&is->pictq);
1877     }
1878     return 0;
1879 }
1880
1881 static int get_video_frame(VideoState *is, AVFrame *frame)
1882 {
1883     int got_picture;
1884
1885     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1886         return -1;
1887
1888     if (got_picture) {
1889         double dpts = NAN;
1890
1891         if (frame->pts != AV_NOPTS_VALUE)
1892             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1893
1894         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1895
1896         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1897             if (frame->pts != AV_NOPTS_VALUE) {
1898                 double diff = dpts - get_master_clock(is);
1899                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1900                     diff - is->frame_last_filter_delay < 0 &&
1901                     is->viddec.pkt_serial == is->vidclk.serial &&
1902                     is->videoq.nb_packets) {
1903                     is->frame_drops_early++;
1904                     av_frame_unref(frame);
1905                     got_picture = 0;
1906                 }
1907             }
1908         }
1909     }
1910
1911     return got_picture;
1912 }
1913
1914 #if CONFIG_AVFILTER
1915 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1916                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1917 {
1918     int ret, i;
1919     int nb_filters = graph->nb_filters;
1920     AVFilterInOut *outputs = NULL, *inputs = NULL;
1921
1922     if (filtergraph) {
1923         outputs = avfilter_inout_alloc();
1924         inputs  = avfilter_inout_alloc();
1925         if (!outputs || !inputs) {
1926             ret = AVERROR(ENOMEM);
1927             goto fail;
1928         }
1929
1930         outputs->name       = av_strdup("in");
1931         outputs->filter_ctx = source_ctx;
1932         outputs->pad_idx    = 0;
1933         outputs->next       = NULL;
1934
1935         inputs->name        = av_strdup("out");
1936         inputs->filter_ctx  = sink_ctx;
1937         inputs->pad_idx     = 0;
1938         inputs->next        = NULL;
1939
1940         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1941             goto fail;
1942     } else {
1943         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1944             goto fail;
1945     }
1946
1947     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1948     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1949         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1950
1951     ret = avfilter_graph_config(graph, NULL);
1952 fail:
1953     avfilter_inout_free(&outputs);
1954     avfilter_inout_free(&inputs);
1955     return ret;
1956 }
1957
1958 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1959 {
1960     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1961     char sws_flags_str[128];
1962     char buffersrc_args[256];
1963     int ret;
1964     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1965     AVCodecContext *codec = is->video_st->codec;
1966     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1967
1968     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1969     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1970     graph->scale_sws_opts = av_strdup(sws_flags_str);
1971
1972     snprintf(buffersrc_args, sizeof(buffersrc_args),
1973              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1974              frame->width, frame->height, frame->format,
1975              is->video_st->time_base.num, is->video_st->time_base.den,
1976              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1977     if (fr.num && fr.den)
1978         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1979
1980     if ((ret = avfilter_graph_create_filter(&filt_src,
1981                                             avfilter_get_by_name("buffer"),
1982                                             "ffplay_buffer", buffersrc_args, NULL,
1983                                             graph)) < 0)
1984         goto fail;
1985
1986     ret = avfilter_graph_create_filter(&filt_out,
1987                                        avfilter_get_by_name("buffersink"),
1988                                        "ffplay_buffersink", NULL, NULL, graph);
1989     if (ret < 0)
1990         goto fail;
1991
1992     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1993         goto fail;
1994
1995     last_filter = filt_out;
1996
1997 /* Note: this macro adds a filter before the lastly added filter, so the
1998  * processing order of the filters is in reverse */
1999 #define INSERT_FILT(name, arg) do {                                          \
2000     AVFilterContext *filt_ctx;                                               \
2001                                                                              \
2002     ret = avfilter_graph_create_filter(&filt_ctx,                            \
2003                                        avfilter_get_by_name(name),           \
2004                                        "ffplay_" name, arg, NULL, graph);    \
2005     if (ret < 0)                                                             \
2006         goto fail;                                                           \
2007                                                                              \
2008     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
2009     if (ret < 0)                                                             \
2010         goto fail;                                                           \
2011                                                                              \
2012     last_filter = filt_ctx;                                                  \
2013 } while (0)
2014
2015     /* SDL YUV code is not handling odd width/height for some driver
2016      * combinations, therefore we crop the picture to an even width/height. */
2017     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
2018
2019     if (autorotate) {
2020         double theta  = get_rotation(is->video_st);
2021
2022         if (fabs(theta - 90) < 1.0) {
2023             INSERT_FILT("transpose", "clock");
2024         } else if (fabs(theta - 180) < 1.0) {
2025             INSERT_FILT("hflip", NULL);
2026             INSERT_FILT("vflip", NULL);
2027         } else if (fabs(theta - 270) < 1.0) {
2028             INSERT_FILT("transpose", "cclock");
2029         } else if (fabs(theta) > 1.0) {
2030             char rotate_buf[64];
2031             snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
2032             INSERT_FILT("rotate", rotate_buf);
2033         }
2034     }
2035
2036     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
2037         goto fail;
2038
2039     is->in_video_filter  = filt_src;
2040     is->out_video_filter = filt_out;
2041
2042 fail:
2043     return ret;
2044 }
2045
2046 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
2047 {
2048     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
2049     int sample_rates[2] = { 0, -1 };
2050     int64_t channel_layouts[2] = { 0, -1 };
2051     int channels[2] = { 0, -1 };
2052     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
2053     char aresample_swr_opts[512] = "";
2054     AVDictionaryEntry *e = NULL;
2055     char asrc_args[256];
2056     int ret;
2057
2058     avfilter_graph_free(&is->agraph);
2059     if (!(is->agraph = avfilter_graph_alloc()))
2060         return AVERROR(ENOMEM);
2061
2062     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
2063         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
2064     if (strlen(aresample_swr_opts))
2065         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
2066     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
2067
2068     ret = snprintf(asrc_args, sizeof(asrc_args),
2069                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
2070                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
2071                    is->audio_filter_src.channels,
2072                    1, is->audio_filter_src.freq);
2073     if (is->audio_filter_src.channel_layout)
2074         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
2075                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
2076
2077     ret = avfilter_graph_create_filter(&filt_asrc,
2078                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
2079                                        asrc_args, NULL, is->agraph);
2080     if (ret < 0)
2081         goto end;
2082
2083
2084     ret = avfilter_graph_create_filter(&filt_asink,
2085                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2086                                        NULL, NULL, is->agraph);
2087     if (ret < 0)
2088         goto end;
2089
2090     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2091         goto end;
2092     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2093         goto end;
2094
2095     if (force_output_format) {
2096         channel_layouts[0] = is->audio_tgt.channel_layout;
2097         channels       [0] = is->audio_tgt.channels;
2098         sample_rates   [0] = is->audio_tgt.freq;
2099         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2100             goto end;
2101         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2102             goto end;
2103         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2104             goto end;
2105         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2106             goto end;
2107     }
2108
2109
2110     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2111         goto end;
2112
2113     is->in_audio_filter  = filt_asrc;
2114     is->out_audio_filter = filt_asink;
2115
2116 end:
2117     if (ret < 0)
2118         avfilter_graph_free(&is->agraph);
2119     return ret;
2120 }
2121 #endif  /* CONFIG_AVFILTER */
2122
2123 static int audio_thread(void *arg)
2124 {
2125     VideoState *is = arg;
2126     AVFrame *frame = av_frame_alloc();
2127     Frame *af;
2128 #if CONFIG_AVFILTER
2129     int last_serial = -1;
2130     int64_t dec_channel_layout;
2131     int reconfigure;
2132 #endif
2133     int got_frame = 0;
2134     AVRational tb;
2135     int ret = 0;
2136
2137     if (!frame)
2138         return AVERROR(ENOMEM);
2139
2140     do {
2141         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2142             goto the_end;
2143
2144         if (got_frame) {
2145                 tb = (AVRational){1, frame->sample_rate};
2146
2147 #if CONFIG_AVFILTER
2148                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, av_frame_get_channels(frame));
2149
2150                 reconfigure =
2151                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2152                                    frame->format, av_frame_get_channels(frame))    ||
2153                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2154                     is->audio_filter_src.freq           != frame->sample_rate ||
2155                     is->auddec.pkt_serial               != last_serial;
2156
2157                 if (reconfigure) {
2158                     char buf1[1024], buf2[1024];
2159                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2160                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2161                     av_log(NULL, AV_LOG_DEBUG,
2162                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2163                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2164                            frame->sample_rate, av_frame_get_channels(frame), av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2165
2166                     is->audio_filter_src.fmt            = frame->format;
2167                     is->audio_filter_src.channels       = av_frame_get_channels(frame);
2168                     is->audio_filter_src.channel_layout = dec_channel_layout;
2169                     is->audio_filter_src.freq           = frame->sample_rate;
2170                     last_serial                         = is->auddec.pkt_serial;
2171
2172                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2173                         goto the_end;
2174                 }
2175
2176             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2177                 goto the_end;
2178
2179             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2180                 tb = is->out_audio_filter->inputs[0]->time_base;
2181 #endif
2182                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2183                     goto the_end;
2184
2185                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2186                 af->pos = av_frame_get_pkt_pos(frame);
2187                 af->serial = is->auddec.pkt_serial;
2188                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2189
2190                 av_frame_move_ref(af->frame, frame);
2191                 frame_queue_push(&is->sampq);
2192
2193 #if CONFIG_AVFILTER
2194                 if (is->audioq.serial != is->auddec.pkt_serial)
2195                     break;
2196             }
2197             if (ret == AVERROR_EOF)
2198                 is->auddec.finished = is->auddec.pkt_serial;
2199 #endif
2200         }
2201     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2202  the_end:
2203 #if CONFIG_AVFILTER
2204     avfilter_graph_free(&is->agraph);
2205 #endif
2206     av_frame_free(&frame);
2207     return ret;
2208 }
2209
2210 static void decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2211 {
2212     packet_queue_start(d->queue);
2213     d->decoder_tid = SDL_CreateThread(fn, arg);
2214 }
2215
2216 static int video_thread(void *arg)
2217 {
2218     VideoState *is = arg;
2219     AVFrame *frame = av_frame_alloc();
2220     double pts;
2221     double duration;
2222     int ret;
2223     AVRational tb = is->video_st->time_base;
2224     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2225
2226 #if CONFIG_AVFILTER
2227     AVFilterGraph *graph = avfilter_graph_alloc();
2228     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2229     int last_w = 0;
2230     int last_h = 0;
2231     enum AVPixelFormat last_format = -2;
2232     int last_serial = -1;
2233     int last_vfilter_idx = 0;
2234     if (!graph) {
2235         av_frame_free(&frame);
2236         return AVERROR(ENOMEM);
2237     }
2238
2239 #endif
2240
2241     if (!frame) {
2242 #if CONFIG_AVFILTER
2243         avfilter_graph_free(&graph);
2244 #endif
2245         return AVERROR(ENOMEM);
2246     }
2247
2248     for (;;) {
2249         ret = get_video_frame(is, frame);
2250         if (ret < 0)
2251             goto the_end;
2252         if (!ret)
2253             continue;
2254
2255 #if CONFIG_AVFILTER
2256         if (   last_w != frame->width
2257             || last_h != frame->height
2258             || last_format != frame->format
2259             || last_serial != is->viddec.pkt_serial
2260             || last_vfilter_idx != is->vfilter_idx) {
2261             av_log(NULL, AV_LOG_DEBUG,
2262                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2263                    last_w, last_h,
2264                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2265                    frame->width, frame->height,
2266                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2267             avfilter_graph_free(&graph);
2268             graph = avfilter_graph_alloc();
2269             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2270                 SDL_Event event;
2271                 event.type = FF_QUIT_EVENT;
2272                 event.user.data1 = is;
2273                 SDL_PushEvent(&event);
2274                 goto the_end;
2275             }
2276             filt_in  = is->in_video_filter;
2277             filt_out = is->out_video_filter;
2278             last_w = frame->width;
2279             last_h = frame->height;
2280             last_format = frame->format;
2281             last_serial = is->viddec.pkt_serial;
2282             last_vfilter_idx = is->vfilter_idx;
2283             frame_rate = filt_out->inputs[0]->frame_rate;
2284         }
2285
2286         ret = av_buffersrc_add_frame(filt_in, frame);
2287         if (ret < 0)
2288             goto the_end;
2289
2290         while (ret >= 0) {
2291             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2292
2293             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2294             if (ret < 0) {
2295                 if (ret == AVERROR_EOF)
2296                     is->viddec.finished = is->viddec.pkt_serial;
2297                 ret = 0;
2298                 break;
2299             }
2300
2301             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2302             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2303                 is->frame_last_filter_delay = 0;
2304             tb = filt_out->inputs[0]->time_base;
2305 #endif
2306             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2307             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2308             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), is->viddec.pkt_serial);
2309             av_frame_unref(frame);
2310 #if CONFIG_AVFILTER
2311         }
2312 #endif
2313
2314         if (ret < 0)
2315             goto the_end;
2316     }
2317  the_end:
2318 #if CONFIG_AVFILTER
2319     avfilter_graph_free(&graph);
2320 #endif
2321     av_frame_free(&frame);
2322     return 0;
2323 }
2324
2325 static int subtitle_thread(void *arg)
2326 {
2327     VideoState *is = arg;
2328     Frame *sp;
2329     int got_subtitle;
2330     double pts;
2331     int i, j;
2332     int r, g, b, y, u, v, a;
2333
2334     for (;;) {
2335         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2336             return 0;
2337
2338         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2339             break;
2340
2341         pts = 0;
2342
2343         if (got_subtitle && sp->sub.format == 0) {
2344             if (sp->sub.pts != AV_NOPTS_VALUE)
2345                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2346             sp->pts = pts;
2347             sp->serial = is->subdec.pkt_serial;
2348
2349             for (i = 0; i < sp->sub.num_rects; i++)
2350             {
2351                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2352                 {
2353                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2354                     y = RGB_TO_Y_CCIR(r, g, b);
2355                     u = RGB_TO_U_CCIR(r, g, b, 0);
2356                     v = RGB_TO_V_CCIR(r, g, b, 0);
2357                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2358                 }
2359             }
2360
2361             /* now we can update the picture count */
2362             frame_queue_push(&is->subpq);
2363         } else if (got_subtitle) {
2364             avsubtitle_free(&sp->sub);
2365         }
2366     }
2367     return 0;
2368 }
2369
2370 /* copy samples for viewing in editor window */
2371 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2372 {
2373     int size, len;
2374
2375     size = samples_size / sizeof(short);
2376     while (size > 0) {
2377         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2378         if (len > size)
2379             len = size;
2380         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2381         samples += len;
2382         is->sample_array_index += len;
2383         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2384             is->sample_array_index = 0;
2385         size -= len;
2386     }
2387 }
2388
2389 /* return the wanted number of samples to get better sync if sync_type is video
2390  * or external master clock */
2391 static int synchronize_audio(VideoState *is, int nb_samples)
2392 {
2393     int wanted_nb_samples = nb_samples;
2394
2395     /* if not master, then we try to remove or add samples to correct the clock */
2396     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2397         double diff, avg_diff;
2398         int min_nb_samples, max_nb_samples;
2399
2400         diff = get_clock(&is->audclk) - get_master_clock(is);
2401
2402         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2403             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2404             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2405                 /* not enough measures to have a correct estimate */
2406                 is->audio_diff_avg_count++;
2407             } else {
2408                 /* estimate the A-V difference */
2409                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2410
2411                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2412                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2413                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2414                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2415                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2416                 }
2417                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2418                         diff, avg_diff, wanted_nb_samples - nb_samples,
2419                         is->audio_clock, is->audio_diff_threshold);
2420             }
2421         } else {
2422             /* too big difference : may be initial PTS errors, so
2423                reset A-V filter */
2424             is->audio_diff_avg_count = 0;
2425             is->audio_diff_cum       = 0;
2426         }
2427     }
2428
2429     return wanted_nb_samples;
2430 }
2431
2432 /**
2433  * Decode one audio frame and return its uncompressed size.
2434  *
2435  * The processed audio frame is decoded, converted if required, and
2436  * stored in is->audio_buf, with size in bytes given by the return
2437  * value.
2438  */
2439 static int audio_decode_frame(VideoState *is)
2440 {
2441     int data_size, resampled_data_size;
2442     int64_t dec_channel_layout;
2443     av_unused double audio_clock0;
2444     int wanted_nb_samples;
2445     Frame *af;
2446
2447     if (is->paused)
2448         return -1;
2449
2450     do {
2451         if (!(af = frame_queue_peek_readable(&is->sampq)))
2452             return -1;
2453         frame_queue_next(&is->sampq);
2454     } while (af->serial != is->audioq.serial);
2455
2456     data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(af->frame),
2457                                            af->frame->nb_samples,
2458                                            af->frame->format, 1);
2459
2460     dec_channel_layout =
2461         (af->frame->channel_layout && av_frame_get_channels(af->frame) == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2462         af->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(af->frame));
2463     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2464
2465     if (af->frame->format        != is->audio_src.fmt            ||
2466         dec_channel_layout       != is->audio_src.channel_layout ||
2467         af->frame->sample_rate   != is->audio_src.freq           ||
2468         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2469         swr_free(&is->swr_ctx);
2470         is->swr_ctx = swr_alloc_set_opts(NULL,
2471                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2472                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2473                                          0, NULL);
2474         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2475             av_log(NULL, AV_LOG_ERROR,
2476                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2477                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), av_frame_get_channels(af->frame),
2478                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2479             swr_free(&is->swr_ctx);
2480             return -1;
2481         }
2482         is->audio_src.channel_layout = dec_channel_layout;
2483         is->audio_src.channels       = av_frame_get_channels(af->frame);
2484         is->audio_src.freq = af->frame->sample_rate;
2485         is->audio_src.fmt = af->frame->format;
2486     }
2487
2488     if (is->swr_ctx) {
2489         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2490         uint8_t **out = &is->audio_buf1;
2491         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2492         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2493         int len2;
2494         if (out_size < 0) {
2495             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2496             return -1;
2497         }
2498         if (wanted_nb_samples != af->frame->nb_samples) {
2499             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2500                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2501                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2502                 return -1;
2503             }
2504         }
2505         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2506         if (!is->audio_buf1)
2507             return AVERROR(ENOMEM);
2508         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2509         if (len2 < 0) {
2510             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2511             return -1;
2512         }
2513         if (len2 == out_count) {
2514             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2515             if (swr_init(is->swr_ctx) < 0)
2516                 swr_free(&is->swr_ctx);
2517         }
2518         is->audio_buf = is->audio_buf1;
2519         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2520     } else {
2521         is->audio_buf = af->frame->data[0];
2522         resampled_data_size = data_size;
2523     }
2524
2525     audio_clock0 = is->audio_clock;
2526     /* update the audio clock with the pts */
2527     if (!isnan(af->pts))
2528         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2529     else
2530         is->audio_clock = NAN;
2531     is->audio_clock_serial = af->serial;
2532 #ifdef DEBUG
2533     {
2534         static double last_clock;
2535         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2536                is->audio_clock - last_clock,
2537                is->audio_clock, audio_clock0);
2538         last_clock = is->audio_clock;
2539     }
2540 #endif
2541     return resampled_data_size;
2542 }
2543
2544 /* prepare a new audio buffer */
2545 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2546 {
2547     VideoState *is = opaque;
2548     int audio_size, len1;
2549
2550     audio_callback_time = av_gettime_relative();
2551
2552     while (len > 0) {
2553         if (is->audio_buf_index >= is->audio_buf_size) {
2554            audio_size = audio_decode_frame(is);
2555            if (audio_size < 0) {
2556                 /* if error, just output silence */
2557                is->audio_buf      = is->silence_buf;
2558                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2559            } else {
2560                if (is->show_mode != SHOW_MODE_VIDEO)
2561                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2562                is->audio_buf_size = audio_size;
2563            }
2564            is->audio_buf_index = 0;
2565         }
2566         len1 = is->audio_buf_size - is->audio_buf_index;
2567         if (len1 > len)
2568             len1 = len;
2569         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2570         len -= len1;
2571         stream += len1;
2572         is->audio_buf_index += len1;
2573     }
2574     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2575     /* Let's assume the audio driver that is used by SDL has two periods. */
2576     if (!isnan(is->audio_clock)) {
2577         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);
2578         sync_clock_to_slave(&is->extclk, &is->audclk);
2579     }
2580 }
2581
2582 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2583 {
2584     SDL_AudioSpec wanted_spec, spec;
2585     const char *env;
2586     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2587     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2588     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2589
2590     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2591     if (env) {
2592         wanted_nb_channels = atoi(env);
2593         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2594     }
2595     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2596         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2597         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2598     }
2599     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2600     wanted_spec.channels = wanted_nb_channels;
2601     wanted_spec.freq = wanted_sample_rate;
2602     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2603         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2604         return -1;
2605     }
2606     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2607         next_sample_rate_idx--;
2608     wanted_spec.format = AUDIO_S16SYS;
2609     wanted_spec.silence = 0;
2610     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2611     wanted_spec.callback = sdl_audio_callback;
2612     wanted_spec.userdata = opaque;
2613     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2614         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2615                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2616         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2617         if (!wanted_spec.channels) {
2618             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2619             wanted_spec.channels = wanted_nb_channels;
2620             if (!wanted_spec.freq) {
2621                 av_log(NULL, AV_LOG_ERROR,
2622                        "No more combinations to try, audio open failed\n");
2623                 return -1;
2624             }
2625         }
2626         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2627     }
2628     if (spec.format != AUDIO_S16SYS) {
2629         av_log(NULL, AV_LOG_ERROR,
2630                "SDL advised audio format %d is not supported!\n", spec.format);
2631         return -1;
2632     }
2633     if (spec.channels != wanted_spec.channels) {
2634         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2635         if (!wanted_channel_layout) {
2636             av_log(NULL, AV_LOG_ERROR,
2637                    "SDL advised channel count %d is not supported!\n", spec.channels);
2638             return -1;
2639         }
2640     }
2641
2642     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2643     audio_hw_params->freq = spec.freq;
2644     audio_hw_params->channel_layout = wanted_channel_layout;
2645     audio_hw_params->channels =  spec.channels;
2646     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2647     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);
2648     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2649         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2650         return -1;
2651     }
2652     return spec.size;
2653 }
2654
2655 /* open a given stream. Return 0 if OK */
2656 static int stream_component_open(VideoState *is, int stream_index)
2657 {
2658     AVFormatContext *ic = is->ic;
2659     AVCodecContext *avctx;
2660     AVCodec *codec;
2661     const char *forced_codec_name = NULL;
2662     AVDictionary *opts;
2663     AVDictionaryEntry *t = NULL;
2664     int sample_rate, nb_channels;
2665     int64_t channel_layout;
2666     int ret = 0;
2667     int stream_lowres = lowres;
2668
2669     if (stream_index < 0 || stream_index >= ic->nb_streams)
2670         return -1;
2671     avctx = ic->streams[stream_index]->codec;
2672
2673     codec = avcodec_find_decoder(avctx->codec_id);
2674
2675     switch(avctx->codec_type){
2676         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2677         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2678         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2679     }
2680     if (forced_codec_name)
2681         codec = avcodec_find_decoder_by_name(forced_codec_name);
2682     if (!codec) {
2683         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2684                                       "No codec could be found with name '%s'\n", forced_codec_name);
2685         else                   av_log(NULL, AV_LOG_WARNING,
2686                                       "No codec could be found with id %d\n", avctx->codec_id);
2687         return -1;
2688     }
2689
2690     avctx->codec_id = codec->id;
2691     if(stream_lowres > av_codec_get_max_lowres(codec)){
2692         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2693                 av_codec_get_max_lowres(codec));
2694         stream_lowres = av_codec_get_max_lowres(codec);
2695     }
2696     av_codec_set_lowres(avctx, stream_lowres);
2697
2698     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2699     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2700     if(codec->capabilities & CODEC_CAP_DR1)
2701         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2702
2703     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2704     if (!av_dict_get(opts, "threads", NULL, 0))
2705         av_dict_set(&opts, "threads", "auto", 0);
2706     if (stream_lowres)
2707         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2708     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2709         av_dict_set(&opts, "refcounted_frames", "1", 0);
2710     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2711         goto fail;
2712     }
2713     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2714         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2715         ret =  AVERROR_OPTION_NOT_FOUND;
2716         goto fail;
2717     }
2718
2719     is->eof = 0;
2720     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2721     switch (avctx->codec_type) {
2722     case AVMEDIA_TYPE_AUDIO:
2723 #if CONFIG_AVFILTER
2724         {
2725             AVFilterLink *link;
2726
2727             is->audio_filter_src.freq           = avctx->sample_rate;
2728             is->audio_filter_src.channels       = avctx->channels;
2729             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2730             is->audio_filter_src.fmt            = avctx->sample_fmt;
2731             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2732                 goto fail;
2733             link = is->out_audio_filter->inputs[0];
2734             sample_rate    = link->sample_rate;
2735             nb_channels    = link->channels;
2736             channel_layout = link->channel_layout;
2737         }
2738 #else
2739         sample_rate    = avctx->sample_rate;
2740         nb_channels    = avctx->channels;
2741         channel_layout = avctx->channel_layout;
2742 #endif
2743
2744         /* prepare audio output */
2745         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2746             goto fail;
2747         is->audio_hw_buf_size = ret;
2748         is->audio_src = is->audio_tgt;
2749         is->audio_buf_size  = 0;
2750         is->audio_buf_index = 0;
2751
2752         /* init averaging filter */
2753         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2754         is->audio_diff_avg_count = 0;
2755         /* since we do not have a precise anough audio fifo fullness,
2756            we correct audio sync only if larger than this threshold */
2757         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2758
2759         is->audio_stream = stream_index;
2760         is->audio_st = ic->streams[stream_index];
2761
2762         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2763         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2764             is->auddec.start_pts = is->audio_st->start_time;
2765             is->auddec.start_pts_tb = is->audio_st->time_base;
2766         }
2767         decoder_start(&is->auddec, audio_thread, is);
2768         SDL_PauseAudio(0);
2769         break;
2770     case AVMEDIA_TYPE_VIDEO:
2771         is->video_stream = stream_index;
2772         is->video_st = ic->streams[stream_index];
2773
2774         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2775         decoder_start(&is->viddec, video_thread, is);
2776         is->queue_attachments_req = 1;
2777         break;
2778     case AVMEDIA_TYPE_SUBTITLE:
2779         is->subtitle_stream = stream_index;
2780         is->subtitle_st = ic->streams[stream_index];
2781
2782         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2783         decoder_start(&is->subdec, subtitle_thread, is);
2784         break;
2785     default:
2786         break;
2787     }
2788
2789 fail:
2790     av_dict_free(&opts);
2791
2792     return ret;
2793 }
2794
2795 static void stream_component_close(VideoState *is, int stream_index)
2796 {
2797     AVFormatContext *ic = is->ic;
2798     AVCodecContext *avctx;
2799
2800     if (stream_index < 0 || stream_index >= ic->nb_streams)
2801         return;
2802     avctx = ic->streams[stream_index]->codec;
2803
2804     switch (avctx->codec_type) {
2805     case AVMEDIA_TYPE_AUDIO:
2806         decoder_abort(&is->auddec, &is->sampq);
2807         SDL_CloseAudio();
2808         decoder_destroy(&is->auddec);
2809         swr_free(&is->swr_ctx);
2810         av_freep(&is->audio_buf1);
2811         is->audio_buf1_size = 0;
2812         is->audio_buf = NULL;
2813
2814         if (is->rdft) {
2815             av_rdft_end(is->rdft);
2816             av_freep(&is->rdft_data);
2817             is->rdft = NULL;
2818             is->rdft_bits = 0;
2819         }
2820         break;
2821     case AVMEDIA_TYPE_VIDEO:
2822         decoder_abort(&is->viddec, &is->pictq);
2823         decoder_destroy(&is->viddec);
2824         break;
2825     case AVMEDIA_TYPE_SUBTITLE:
2826         decoder_abort(&is->subdec, &is->subpq);
2827         decoder_destroy(&is->subdec);
2828         break;
2829     default:
2830         break;
2831     }
2832
2833     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2834     avcodec_close(avctx);
2835     switch (avctx->codec_type) {
2836     case AVMEDIA_TYPE_AUDIO:
2837         is->audio_st = NULL;
2838         is->audio_stream = -1;
2839         break;
2840     case AVMEDIA_TYPE_VIDEO:
2841         is->video_st = NULL;
2842         is->video_stream = -1;
2843         break;
2844     case AVMEDIA_TYPE_SUBTITLE:
2845         is->subtitle_st = NULL;
2846         is->subtitle_stream = -1;
2847         break;
2848     default:
2849         break;
2850     }
2851 }
2852
2853 static int decode_interrupt_cb(void *ctx)
2854 {
2855     VideoState *is = ctx;
2856     return is->abort_request;
2857 }
2858
2859 static int is_realtime(AVFormatContext *s)
2860 {
2861     if(   !strcmp(s->iformat->name, "rtp")
2862        || !strcmp(s->iformat->name, "rtsp")
2863        || !strcmp(s->iformat->name, "sdp")
2864     )
2865         return 1;
2866
2867     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2868                  || !strncmp(s->filename, "udp:", 4)
2869                 )
2870     )
2871         return 1;
2872     return 0;
2873 }
2874
2875 /* this thread gets the stream from the disk or the network */
2876 static int read_thread(void *arg)
2877 {
2878     VideoState *is = arg;
2879     AVFormatContext *ic = NULL;
2880     int err, i, ret;
2881     int st_index[AVMEDIA_TYPE_NB];
2882     AVPacket pkt1, *pkt = &pkt1;
2883     int64_t stream_start_time;
2884     int pkt_in_play_range = 0;
2885     AVDictionaryEntry *t;
2886     AVDictionary **opts;
2887     int orig_nb_streams;
2888     SDL_mutex *wait_mutex = SDL_CreateMutex();
2889     int scan_all_pmts_set = 0;
2890     int64_t pkt_ts;
2891
2892     memset(st_index, -1, sizeof(st_index));
2893     is->last_video_stream = is->video_stream = -1;
2894     is->last_audio_stream = is->audio_stream = -1;
2895     is->last_subtitle_stream = is->subtitle_stream = -1;
2896     is->eof = 0;
2897
2898     ic = avformat_alloc_context();
2899     if (!ic) {
2900         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2901         ret = AVERROR(ENOMEM);
2902         goto fail;
2903     }
2904     ic->interrupt_callback.callback = decode_interrupt_cb;
2905     ic->interrupt_callback.opaque = is;
2906     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2907         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2908         scan_all_pmts_set = 1;
2909     }
2910     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2911     if (err < 0) {
2912         print_error(is->filename, err);
2913         ret = -1;
2914         goto fail;
2915     }
2916     if (scan_all_pmts_set)
2917         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2918
2919     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2920         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2921         ret = AVERROR_OPTION_NOT_FOUND;
2922         goto fail;
2923     }
2924     is->ic = ic;
2925
2926     if (genpts)
2927         ic->flags |= AVFMT_FLAG_GENPTS;
2928
2929     av_format_inject_global_side_data(ic);
2930
2931     opts = setup_find_stream_info_opts(ic, codec_opts);
2932     orig_nb_streams = ic->nb_streams;
2933
2934     err = avformat_find_stream_info(ic, opts);
2935
2936     for (i = 0; i < orig_nb_streams; i++)
2937         av_dict_free(&opts[i]);
2938     av_freep(&opts);
2939
2940     if (err < 0) {
2941         av_log(NULL, AV_LOG_WARNING,
2942                "%s: could not find codec parameters\n", is->filename);
2943         ret = -1;
2944         goto fail;
2945     }
2946
2947     if (ic->pb)
2948         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2949
2950     if (seek_by_bytes < 0)
2951         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2952
2953     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2954
2955     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2956         window_title = av_asprintf("%s - %s", t->value, input_filename);
2957
2958     /* if seeking requested, we execute it */
2959     if (start_time != AV_NOPTS_VALUE) {
2960         int64_t timestamp;
2961
2962         timestamp = start_time;
2963         /* add the stream start time */
2964         if (ic->start_time != AV_NOPTS_VALUE)
2965             timestamp += ic->start_time;
2966         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2967         if (ret < 0) {
2968             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2969                     is->filename, (double)timestamp / AV_TIME_BASE);
2970         }
2971     }
2972
2973     is->realtime = is_realtime(ic);
2974
2975     if (show_status)
2976         av_dump_format(ic, 0, is->filename, 0);
2977
2978     for (i = 0; i < ic->nb_streams; i++) {
2979         AVStream *st = ic->streams[i];
2980         enum AVMediaType type = st->codec->codec_type;
2981         st->discard = AVDISCARD_ALL;
2982         if (wanted_stream_spec[type] && st_index[type] == -1)
2983             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2984                 st_index[type] = i;
2985     }
2986     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2987         if (wanted_stream_spec[i] && st_index[i] == -1) {
2988             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));
2989             st_index[i] = INT_MAX;
2990         }
2991     }
2992
2993     if (!video_disable)
2994         st_index[AVMEDIA_TYPE_VIDEO] =
2995             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2996                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2997     if (!audio_disable)
2998         st_index[AVMEDIA_TYPE_AUDIO] =
2999             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
3000                                 st_index[AVMEDIA_TYPE_AUDIO],
3001                                 st_index[AVMEDIA_TYPE_VIDEO],
3002                                 NULL, 0);
3003     if (!video_disable && !subtitle_disable)
3004         st_index[AVMEDIA_TYPE_SUBTITLE] =
3005             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
3006                                 st_index[AVMEDIA_TYPE_SUBTITLE],
3007                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
3008                                  st_index[AVMEDIA_TYPE_AUDIO] :
3009                                  st_index[AVMEDIA_TYPE_VIDEO]),
3010                                 NULL, 0);
3011
3012     is->show_mode = show_mode;
3013     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
3014         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
3015         AVCodecContext *avctx = st->codec;
3016         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
3017         if (avctx->width)
3018             set_default_window_size(avctx->width, avctx->height, sar);
3019     }
3020
3021     /* open the streams */
3022     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
3023         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
3024     }
3025
3026     ret = -1;
3027     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
3028         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
3029     }
3030     if (is->show_mode == SHOW_MODE_NONE)
3031         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
3032
3033     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
3034         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
3035     }
3036
3037     if (is->video_stream < 0 && is->audio_stream < 0) {
3038         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
3039                is->filename);
3040         ret = -1;
3041         goto fail;
3042     }
3043
3044     if (infinite_buffer < 0 && is->realtime)
3045         infinite_buffer = 1;
3046
3047     for (;;) {
3048         if (is->abort_request)
3049             break;
3050         if (is->paused != is->last_paused) {
3051             is->last_paused = is->paused;
3052             if (is->paused)
3053                 is->read_pause_return = av_read_pause(ic);
3054             else
3055                 av_read_play(ic);
3056         }
3057 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
3058         if (is->paused &&
3059                 (!strcmp(ic->iformat->name, "rtsp") ||
3060                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
3061             /* wait 10 ms to avoid trying to get another packet */
3062             /* XXX: horrible */
3063             SDL_Delay(10);
3064             continue;
3065         }
3066 #endif
3067         if (is->seek_req) {
3068             int64_t seek_target = is->seek_pos;
3069             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
3070             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
3071 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
3072 //      of the seek_pos/seek_rel variables
3073
3074             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
3075             if (ret < 0) {
3076                 av_log(NULL, AV_LOG_ERROR,
3077                        "%s: error while seeking\n", is->ic->filename);
3078             } else {
3079                 if (is->audio_stream >= 0) {
3080                     packet_queue_flush(&is->audioq);
3081                     packet_queue_put(&is->audioq, &flush_pkt);
3082                 }
3083                 if (is->subtitle_stream >= 0) {
3084                     packet_queue_flush(&is->subtitleq);
3085                     packet_queue_put(&is->subtitleq, &flush_pkt);
3086                 }
3087                 if (is->video_stream >= 0) {
3088                     packet_queue_flush(&is->videoq);
3089                     packet_queue_put(&is->videoq, &flush_pkt);
3090                 }
3091                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
3092                    set_clock(&is->extclk, NAN, 0);
3093                 } else {
3094                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
3095                 }
3096             }
3097             is->seek_req = 0;
3098             is->queue_attachments_req = 1;
3099             is->eof = 0;
3100             if (is->paused)
3101                 step_to_next_frame(is);
3102         }
3103         if (is->queue_attachments_req) {
3104             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
3105                 AVPacket copy;
3106                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
3107                     goto fail;
3108                 packet_queue_put(&is->videoq, &copy);
3109                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3110             }
3111             is->queue_attachments_req = 0;
3112         }
3113
3114         /* if the queue are full, no need to read more */
3115         if (infinite_buffer<1 &&
3116               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3117             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
3118                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
3119                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3120                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
3121             /* wait 10 ms */
3122             SDL_LockMutex(wait_mutex);
3123             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3124             SDL_UnlockMutex(wait_mutex);
3125             continue;
3126         }
3127         if (!is->paused &&
3128             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3129             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3130             if (loop != 1 && (!loop || --loop)) {
3131                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3132             } else if (autoexit) {
3133                 ret = AVERROR_EOF;
3134                 goto fail;
3135             }
3136         }
3137         ret = av_read_frame(ic, pkt);
3138         if (ret < 0) {
3139             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3140                 if (is->video_stream >= 0)
3141                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3142                 if (is->audio_stream >= 0)
3143                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3144                 if (is->subtitle_stream >= 0)
3145                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3146                 is->eof = 1;
3147             }
3148             if (ic->pb && ic->pb->error)
3149                 break;
3150             SDL_LockMutex(wait_mutex);
3151             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3152             SDL_UnlockMutex(wait_mutex);
3153             continue;
3154         } else {
3155             is->eof = 0;
3156         }
3157         /* check if packet is in play range specified by user, then queue, otherwise discard */
3158         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3159         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3160         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3161                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3162                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3163                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3164                 <= ((double)duration / 1000000);
3165         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3166             packet_queue_put(&is->audioq, pkt);
3167         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3168                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3169             packet_queue_put(&is->videoq, pkt);
3170         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3171             packet_queue_put(&is->subtitleq, pkt);
3172         } else {
3173             av_free_packet(pkt);
3174         }
3175     }
3176     /* wait until the end */
3177     while (!is->abort_request) {
3178         SDL_Delay(100);
3179     }
3180
3181     ret = 0;
3182  fail:
3183     /* close each stream */
3184     if (is->audio_stream >= 0)
3185         stream_component_close(is, is->audio_stream);
3186     if (is->video_stream >= 0)
3187         stream_component_close(is, is->video_stream);
3188     if (is->subtitle_stream >= 0)
3189         stream_component_close(is, is->subtitle_stream);
3190     if (ic) {
3191         avformat_close_input(&ic);
3192         is->ic = NULL;
3193     }
3194
3195     if (ret != 0) {
3196         SDL_Event event;
3197
3198         event.type = FF_QUIT_EVENT;
3199         event.user.data1 = is;
3200         SDL_PushEvent(&event);
3201     }
3202     SDL_DestroyMutex(wait_mutex);
3203     return 0;
3204 }
3205
3206 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3207 {
3208     VideoState *is;
3209
3210     is = av_mallocz(sizeof(VideoState));
3211     if (!is)
3212         return NULL;
3213     av_strlcpy(is->filename, filename, sizeof(is->filename));
3214     is->iformat = iformat;
3215     is->ytop    = 0;
3216     is->xleft   = 0;
3217
3218     /* start video display */
3219     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3220         goto fail;
3221     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3222         goto fail;
3223     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3224         goto fail;
3225
3226     packet_queue_init(&is->videoq);
3227     packet_queue_init(&is->audioq);
3228     packet_queue_init(&is->subtitleq);
3229
3230     is->continue_read_thread = SDL_CreateCond();
3231
3232     init_clock(&is->vidclk, &is->videoq.serial);
3233     init_clock(&is->audclk, &is->audioq.serial);
3234     init_clock(&is->extclk, &is->extclk.serial);
3235     is->audio_clock_serial = -1;
3236     is->av_sync_type = av_sync_type;
3237     is->read_tid     = SDL_CreateThread(read_thread, is);
3238     if (!is->read_tid) {
3239 fail:
3240         stream_close(is);
3241         return NULL;
3242     }
3243     return is;
3244 }
3245
3246 static void stream_cycle_channel(VideoState *is, int codec_type)
3247 {
3248     AVFormatContext *ic = is->ic;
3249     int start_index, stream_index;
3250     int old_index;
3251     AVStream *st;
3252     AVProgram *p = NULL;
3253     int nb_streams = is->ic->nb_streams;
3254
3255     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3256         start_index = is->last_video_stream;
3257         old_index = is->video_stream;
3258     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3259         start_index = is->last_audio_stream;
3260         old_index = is->audio_stream;
3261     } else {
3262         start_index = is->last_subtitle_stream;
3263         old_index = is->subtitle_stream;
3264     }
3265     stream_index = start_index;
3266
3267     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3268         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3269         if (p) {
3270             nb_streams = p->nb_stream_indexes;
3271             for (start_index = 0; start_index < nb_streams; start_index++)
3272                 if (p->stream_index[start_index] == stream_index)
3273                     break;
3274             if (start_index == nb_streams)
3275                 start_index = -1;
3276             stream_index = start_index;
3277         }
3278     }
3279
3280     for (;;) {
3281         if (++stream_index >= nb_streams)
3282         {
3283             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3284             {
3285                 stream_index = -1;
3286                 is->last_subtitle_stream = -1;
3287                 goto the_end;
3288             }
3289             if (start_index == -1)
3290                 return;
3291             stream_index = 0;
3292         }
3293         if (stream_index == start_index)
3294             return;
3295         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3296         if (st->codec->codec_type == codec_type) {
3297             /* check that parameters are OK */
3298             switch (codec_type) {
3299             case AVMEDIA_TYPE_AUDIO:
3300                 if (st->codec->sample_rate != 0 &&
3301                     st->codec->channels != 0)
3302                     goto the_end;
3303                 break;
3304             case AVMEDIA_TYPE_VIDEO:
3305             case AVMEDIA_TYPE_SUBTITLE:
3306                 goto the_end;
3307             default:
3308                 break;
3309             }
3310         }
3311     }
3312  the_end:
3313     if (p && stream_index != -1)
3314         stream_index = p->stream_index[stream_index];
3315     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3316            av_get_media_type_string(codec_type),
3317            old_index,
3318            stream_index);
3319
3320     stream_component_close(is, old_index);
3321     stream_component_open(is, stream_index);
3322 }
3323
3324
3325 static void toggle_full_screen(VideoState *is)
3326 {
3327 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3328     /* OS X needs to reallocate the SDL overlays */
3329     int i;
3330     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3331         is->pictq.queue[i].reallocate = 1;
3332 #endif
3333     is_full_screen = !is_full_screen;
3334     video_open(is, 1, NULL);
3335 }
3336
3337 static void toggle_audio_display(VideoState *is)
3338 {
3339     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3340     int next = is->show_mode;
3341     do {
3342         next = (next + 1) % SHOW_MODE_NB;
3343     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3344     if (is->show_mode != next) {
3345         fill_rectangle(screen,
3346                     is->xleft, is->ytop, is->width, is->height,
3347                     bgcolor, 1);
3348         is->force_refresh = 1;
3349         is->show_mode = next;
3350     }
3351 }
3352
3353 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3354     double remaining_time = 0.0;
3355     SDL_PumpEvents();
3356     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3357         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3358             SDL_ShowCursor(0);
3359             cursor_hidden = 1;
3360         }
3361         if (remaining_time > 0.0)
3362             av_usleep((int64_t)(remaining_time * 1000000.0));
3363         remaining_time = REFRESH_RATE;
3364         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3365             video_refresh(is, &remaining_time);
3366         SDL_PumpEvents();
3367     }
3368 }
3369
3370 static void seek_chapter(VideoState *is, int incr)
3371 {
3372     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3373     int i;
3374
3375     if (!is->ic->nb_chapters)
3376         return;
3377
3378     /* find the current chapter */
3379     for (i = 0; i < is->ic->nb_chapters; i++) {
3380         AVChapter *ch = is->ic->chapters[i];
3381         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3382             i--;
3383             break;
3384         }
3385     }
3386
3387     i += incr;
3388     i = FFMAX(i, 0);
3389     if (i >= is->ic->nb_chapters)
3390         return;
3391
3392     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3393     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3394                                  AV_TIME_BASE_Q), 0, 0);
3395 }
3396
3397 /* handle an event sent by the GUI */
3398 static void event_loop(VideoState *cur_stream)
3399 {
3400     SDL_Event event;
3401     double incr, pos, frac;
3402
3403     for (;;) {
3404         double x;
3405         refresh_loop_wait_event(cur_stream, &event);
3406         switch (event.type) {
3407         case SDL_KEYDOWN:
3408             if (exit_on_keydown) {
3409                 do_exit(cur_stream);
3410                 break;
3411             }
3412             switch (event.key.keysym.sym) {
3413             case SDLK_ESCAPE:
3414             case SDLK_q:
3415                 do_exit(cur_stream);
3416                 break;
3417             case SDLK_f:
3418                 toggle_full_screen(cur_stream);
3419                 cur_stream->force_refresh = 1;
3420                 break;
3421             case SDLK_p:
3422             case SDLK_SPACE:
3423                 toggle_pause(cur_stream);
3424                 break;
3425             case SDLK_s: // S: Step to next frame
3426                 step_to_next_frame(cur_stream);
3427                 break;
3428             case SDLK_a:
3429                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3430                 break;
3431             case SDLK_v:
3432                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3433                 break;
3434             case SDLK_c:
3435                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3436                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3437                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3438                 break;
3439             case SDLK_t:
3440                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3441                 break;
3442             case SDLK_w:
3443 #if CONFIG_AVFILTER
3444                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3445                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3446                         cur_stream->vfilter_idx = 0;
3447                 } else {
3448                     cur_stream->vfilter_idx = 0;
3449                     toggle_audio_display(cur_stream);
3450                 }
3451 #else
3452                 toggle_audio_display(cur_stream);
3453 #endif
3454                 break;
3455             case SDLK_PAGEUP:
3456                 if (cur_stream->ic->nb_chapters <= 1) {
3457                     incr = 600.0;
3458                     goto do_seek;
3459                 }
3460                 seek_chapter(cur_stream, 1);
3461                 break;
3462             case SDLK_PAGEDOWN:
3463                 if (cur_stream->ic->nb_chapters <= 1) {
3464                     incr = -600.0;
3465                     goto do_seek;
3466                 }
3467                 seek_chapter(cur_stream, -1);
3468                 break;
3469             case SDLK_LEFT:
3470                 incr = -10.0;
3471                 goto do_seek;
3472             case SDLK_RIGHT:
3473                 incr = 10.0;
3474                 goto do_seek;
3475             case SDLK_UP:
3476                 incr = 60.0;
3477                 goto do_seek;
3478             case SDLK_DOWN:
3479                 incr = -60.0;
3480             do_seek:
3481                     if (seek_by_bytes) {
3482                         pos = -1;
3483                         if (pos < 0 && cur_stream->video_stream >= 0)
3484                             pos = frame_queue_last_pos(&cur_stream->pictq);
3485                         if (pos < 0 && cur_stream->audio_stream >= 0)
3486                             pos = frame_queue_last_pos(&cur_stream->sampq);
3487                         if (pos < 0)
3488                             pos = avio_tell(cur_stream->ic->pb);
3489                         if (cur_stream->ic->bit_rate)
3490                             incr *= cur_stream->ic->bit_rate / 8.0;
3491                         else
3492                             incr *= 180000.0;
3493                         pos += incr;
3494                         stream_seek(cur_stream, pos, incr, 1);
3495                     } else {
3496                         pos = get_master_clock(cur_stream);
3497                         if (isnan(pos))
3498                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3499                         pos += incr;
3500                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3501                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3502                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3503                     }
3504                 break;
3505             default:
3506                 break;
3507             }
3508             break;
3509         case SDL_VIDEOEXPOSE:
3510             cur_stream->force_refresh = 1;
3511             break;
3512         case SDL_MOUSEBUTTONDOWN:
3513             if (exit_on_mousedown) {
3514                 do_exit(cur_stream);
3515                 break;
3516             }
3517         case SDL_MOUSEMOTION:
3518             if (cursor_hidden) {
3519                 SDL_ShowCursor(1);
3520                 cursor_hidden = 0;
3521             }
3522             cursor_last_shown = av_gettime_relative();
3523             if (event.type == SDL_MOUSEBUTTONDOWN) {
3524                 x = event.button.x;
3525             } else {
3526                 if (event.motion.state != SDL_PRESSED)
3527                     break;
3528                 x = event.motion.x;
3529             }
3530                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3531                     uint64_t size =  avio_size(cur_stream->ic->pb);
3532                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3533                 } else {
3534                     int64_t ts;
3535                     int ns, hh, mm, ss;
3536                     int tns, thh, tmm, tss;
3537                     tns  = cur_stream->ic->duration / 1000000LL;
3538                     thh  = tns / 3600;
3539                     tmm  = (tns % 3600) / 60;
3540                     tss  = (tns % 60);
3541                     frac = x / cur_stream->width;
3542                     ns   = frac * tns;
3543                     hh   = ns / 3600;
3544                     mm   = (ns % 3600) / 60;
3545                     ss   = (ns % 60);
3546                     av_log(NULL, AV_LOG_INFO,
3547                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3548                             hh, mm, ss, thh, tmm, tss);
3549                     ts = frac * cur_stream->ic->duration;
3550                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3551                         ts += cur_stream->ic->start_time;
3552                     stream_seek(cur_stream, ts, 0, 0);
3553                 }
3554             break;
3555         case SDL_VIDEORESIZE:
3556                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3557                                           SDL_HWSURFACE|(is_full_screen?SDL_FULLSCREEN:SDL_RESIZABLE)|SDL_ASYNCBLIT|SDL_HWACCEL);
3558                 if (!screen) {
3559                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3560                     do_exit(cur_stream);
3561                 }
3562                 screen_width  = cur_stream->width  = screen->w;
3563                 screen_height = cur_stream->height = screen->h;
3564                 cur_stream->force_refresh = 1;
3565             break;
3566         case SDL_QUIT:
3567         case FF_QUIT_EVENT:
3568             do_exit(cur_stream);
3569             break;
3570         case FF_ALLOC_EVENT:
3571             alloc_picture(event.user.data1);
3572             break;
3573         default:
3574             break;
3575         }
3576     }
3577 }
3578
3579 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3580 {
3581     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3582     return opt_default(NULL, "video_size", arg);
3583 }
3584
3585 static int opt_width(void *optctx, const char *opt, const char *arg)
3586 {
3587     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3588     return 0;
3589 }
3590
3591 static int opt_height(void *optctx, const char *opt, const char *arg)
3592 {
3593     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3594     return 0;
3595 }
3596
3597 static int opt_format(void *optctx, const char *opt, const char *arg)
3598 {
3599     file_iformat = av_find_input_format(arg);
3600     if (!file_iformat) {
3601         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3602         return AVERROR(EINVAL);
3603     }
3604     return 0;
3605 }
3606
3607 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3608 {
3609     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3610     return opt_default(NULL, "pixel_format", arg);
3611 }
3612
3613 static int opt_sync(void *optctx, const char *opt, const char *arg)
3614 {
3615     if (!strcmp(arg, "audio"))
3616         av_sync_type = AV_SYNC_AUDIO_MASTER;
3617     else if (!strcmp(arg, "video"))
3618         av_sync_type = AV_SYNC_VIDEO_MASTER;
3619     else if (!strcmp(arg, "ext"))
3620         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3621     else {
3622         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3623         exit(1);
3624     }
3625     return 0;
3626 }
3627
3628 static int opt_seek(void *optctx, const char *opt, const char *arg)
3629 {
3630     start_time = parse_time_or_die(opt, arg, 1);
3631     return 0;
3632 }
3633
3634 static int opt_duration(void *optctx, const char *opt, const char *arg)
3635 {
3636     duration = parse_time_or_die(opt, arg, 1);
3637     return 0;
3638 }
3639
3640 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3641 {
3642     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3643                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3644                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3645                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3646     return 0;
3647 }
3648
3649 static void opt_input_file(void *optctx, const char *filename)
3650 {
3651     if (input_filename) {
3652         av_log(NULL, AV_LOG_FATAL,
3653                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3654                 filename, input_filename);
3655         exit(1);
3656     }
3657     if (!strcmp(filename, "-"))
3658         filename = "pipe:";
3659     input_filename = filename;
3660 }
3661
3662 static int opt_codec(void *optctx, const char *opt, const char *arg)
3663 {
3664    const char *spec = strchr(opt, ':');
3665    if (!spec) {
3666        av_log(NULL, AV_LOG_ERROR,
3667               "No media specifier was specified in '%s' in option '%s'\n",
3668                arg, opt);
3669        return AVERROR(EINVAL);
3670    }
3671    spec++;
3672    switch (spec[0]) {
3673    case 'a' :    audio_codec_name = arg; break;
3674    case 's' : subtitle_codec_name = arg; break;
3675    case 'v' :    video_codec_name = arg; break;
3676    default:
3677        av_log(NULL, AV_LOG_ERROR,
3678               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3679        return AVERROR(EINVAL);
3680    }
3681    return 0;
3682 }
3683
3684 static int dummy;
3685
3686 static const OptionDef options[] = {
3687 #include "cmdutils_common_opts.h"
3688     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3689     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3690     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3691     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3692     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3693     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3694     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3695     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3696     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3697     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3698     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3699     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3700     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3701     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3702     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3703     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3704     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3705     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3706     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3707     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3708     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3709     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3710     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3711     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3712     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3713     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3714     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3715     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3716     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3717 #if CONFIG_AVFILTER
3718     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3719     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3720 #endif
3721     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3722     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3723     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3724     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3725     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3726     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3727     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3728     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3729     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3730     { NULL, },
3731 };
3732
3733 static void show_usage(void)
3734 {
3735     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3736     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3737     av_log(NULL, AV_LOG_INFO, "\n");