ffplay: Fallback to dts if pts is unavailable in pkt_in_play_range calculation
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/colorspace.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avcodec.h"
52 # include "libavfilter/avfilter.h"
53 # include "libavfilter/buffersink.h"
54 # include "libavfilter/buffersrc.h"
55 #endif
56
57 #include <SDL.h>
58 #include <SDL_thread.h>
59
60 #include "cmdutils.h"
61
62 #include <assert.h>
63
64 const char program_name[] = "ffplay";
65 const int program_birth_year = 2003;
66
67 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
68 #define MIN_FRAMES 5
69
70 /* Minimum SDL audio buffer size, in samples. */
71 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
72 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
73 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
74
75 /* no AV sync correction is done if below the minimum AV sync threshold */
76 #define AV_SYNC_THRESHOLD_MIN 0.04
77 /* AV sync correction is done if above the maximum AV sync threshold */
78 #define AV_SYNC_THRESHOLD_MAX 0.1
79 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
80 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
81 /* no AV correction is done if too big error */
82 #define AV_NOSYNC_THRESHOLD 10.0
83
84 /* maximum audio speed change to get correct sync */
85 #define SAMPLE_CORRECTION_PERCENT_MAX 10
86
87 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
88 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
89 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
90 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
91
92 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
93 #define AUDIO_DIFF_AVG_NB   20
94
95 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
96 #define REFRESH_RATE 0.01
97
98 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
99 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
100 #define SAMPLE_ARRAY_SIZE (8 * 65536)
101
102 #define CURSOR_HIDE_DELAY 1000000
103
104 static int64_t sws_flags = SWS_BICUBIC;
105
106 typedef struct MyAVPacketList {
107     AVPacket pkt;
108     struct MyAVPacketList *next;
109     int serial;
110 } MyAVPacketList;
111
112 typedef struct PacketQueue {
113     MyAVPacketList *first_pkt, *last_pkt;
114     int nb_packets;
115     int size;
116     int abort_request;
117     int serial;
118     SDL_mutex *mutex;
119     SDL_cond *cond;
120 } PacketQueue;
121
122 #define VIDEO_PICTURE_QUEUE_SIZE 3
123 #define SUBPICTURE_QUEUE_SIZE 16
124 #define SAMPLE_QUEUE_SIZE 9
125 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
126
127 typedef struct AudioParams {
128     int freq;
129     int channels;
130     int64_t channel_layout;
131     enum AVSampleFormat fmt;
132     int frame_size;
133     int bytes_per_sec;
134 } AudioParams;
135
136 typedef struct Clock {
137     double pts;           /* clock base */
138     double pts_drift;     /* clock base minus time at which we updated the clock */
139     double last_updated;
140     double speed;
141     int serial;           /* clock is based on a packet with this serial */
142     int paused;
143     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
144 } Clock;
145
146 /* Common struct for handling all types of decoded data and allocated render buffers. */
147 typedef struct Frame {
148     AVFrame *frame;
149     AVSubtitle sub;
150     int serial;
151     double pts;           /* presentation timestamp for the frame */
152     double duration;      /* estimated duration of the frame */
153     int64_t pos;          /* byte position of the frame in the input file */
154     SDL_Overlay *bmp;
155     int allocated;
156     int reallocate;
157     int width;
158     int height;
159     AVRational sar;
160 } Frame;
161
162 typedef struct FrameQueue {
163     Frame queue[FRAME_QUEUE_SIZE];
164     int rindex;
165     int windex;
166     int size;
167     int max_size;
168     int keep_last;
169     int rindex_shown;
170     SDL_mutex *mutex;
171     SDL_cond *cond;
172     PacketQueue *pktq;
173 } FrameQueue;
174
175 enum {
176     AV_SYNC_AUDIO_MASTER, /* default choice */
177     AV_SYNC_VIDEO_MASTER,
178     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
179 };
180
181 typedef struct Decoder {
182     AVPacket pkt;
183     AVPacket pkt_temp;
184     PacketQueue *queue;
185     AVCodecContext *avctx;
186     int pkt_serial;
187     int finished;
188     int packet_pending;
189     SDL_cond *empty_queue_cond;
190     int64_t start_pts;
191     AVRational start_pts_tb;
192     int64_t next_pts;
193     AVRational next_pts_tb;
194 } Decoder;
195
196 typedef struct VideoState {
197     SDL_Thread *read_tid;
198     SDL_Thread *video_tid;
199     SDL_Thread *audio_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     SDL_Thread *subtitle_tid;
268     int subtitle_stream;
269     AVStream *subtitle_st;
270     PacketQueue subtitleq;
271
272     double frame_timer;
273     double frame_last_returned_time;
274     double frame_last_filter_delay;
275     int video_stream;
276     AVStream *video_st;
277     PacketQueue videoq;
278     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
279 #if !CONFIG_AVFILTER
280     struct SwsContext *img_convert_ctx;
281 #endif
282     SDL_Rect last_display_rect;
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 inline void fill_rectangle(SDL_Surface *screen,
772                                   int x, int y, int w, int h, int color, int update)
773 {
774     SDL_Rect rect;
775     rect.x = x;
776     rect.y = y;
777     rect.w = w;
778     rect.h = h;
779     SDL_FillRect(screen, &rect, color);
780     if (update && w > 0 && h > 0)
781         SDL_UpdateRect(screen, x, y, w, h);
782 }
783
784 /* draw only the border of a rectangle */
785 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
786 {
787     int w1, w2, h1, h2;
788
789     /* fill the background */
790     w1 = x;
791     if (w1 < 0)
792         w1 = 0;
793     w2 = width - (x + w);
794     if (w2 < 0)
795         w2 = 0;
796     h1 = y;
797     if (h1 < 0)
798         h1 = 0;
799     h2 = height - (y + h);
800     if (h2 < 0)
801         h2 = 0;
802     fill_rectangle(screen,
803                    xleft, ytop,
804                    w1, height,
805                    color, update);
806     fill_rectangle(screen,
807                    xleft + width - w2, ytop,
808                    w2, height,
809                    color, update);
810     fill_rectangle(screen,
811                    xleft + w1, ytop,
812                    width - w1 - w2, h1,
813                    color, update);
814     fill_rectangle(screen,
815                    xleft + w1, ytop + height - h2,
816                    width - w1 - w2, h2,
817                    color, update);
818 }
819
820 #define ALPHA_BLEND(a, oldp, newp, s)\
821 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
822
823 #define RGBA_IN(r, g, b, a, s)\
824 {\
825     unsigned int v = ((const uint32_t *)(s))[0];\
826     a = (v >> 24) & 0xff;\
827     r = (v >> 16) & 0xff;\
828     g = (v >> 8) & 0xff;\
829     b = v & 0xff;\
830 }
831
832 #define YUVA_IN(y, u, v, a, s, pal)\
833 {\
834     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
835     a = (val >> 24) & 0xff;\
836     y = (val >> 16) & 0xff;\
837     u = (val >> 8) & 0xff;\
838     v = val & 0xff;\
839 }
840
841 #define YUVA_OUT(d, y, u, v, a)\
842 {\
843     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
844 }
845
846
847 #define BPP 1
848
849 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
850 {
851     int wrap, wrap3, width2, skip2;
852     int y, u, v, a, u1, v1, a1, w, h;
853     uint8_t *lum, *cb, *cr;
854     const uint8_t *p;
855     const uint32_t *pal;
856     int dstx, dsty, dstw, dsth;
857
858     dstw = av_clip(rect->w, 0, imgw);
859     dsth = av_clip(rect->h, 0, imgh);
860     dstx = av_clip(rect->x, 0, imgw - dstw);
861     dsty = av_clip(rect->y, 0, imgh - dsth);
862     lum = dst->data[0] + dsty * dst->linesize[0];
863     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
864     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
865
866     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
867     skip2 = dstx >> 1;
868     wrap = dst->linesize[0];
869     wrap3 = rect->pict.linesize[0];
870     p = rect->pict.data[0];
871     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
872
873     if (dsty & 1) {
874         lum += dstx;
875         cb += skip2;
876         cr += skip2;
877
878         if (dstx & 1) {
879             YUVA_IN(y, u, v, a, p, pal);
880             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
881             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
882             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
883             cb++;
884             cr++;
885             lum++;
886             p += BPP;
887         }
888         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
889             YUVA_IN(y, u, v, a, p, pal);
890             u1 = u;
891             v1 = v;
892             a1 = a;
893             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
894
895             YUVA_IN(y, u, v, a, p + BPP, pal);
896             u1 += u;
897             v1 += v;
898             a1 += a;
899             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
900             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
901             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
902             cb++;
903             cr++;
904             p += 2 * BPP;
905             lum += 2;
906         }
907         if (w) {
908             YUVA_IN(y, u, v, a, p, pal);
909             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
910             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
911             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
912             p++;
913             lum++;
914         }
915         p += wrap3 - dstw * BPP;
916         lum += wrap - dstw - dstx;
917         cb += dst->linesize[1] - width2 - skip2;
918         cr += dst->linesize[2] - width2 - skip2;
919     }
920     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
921         lum += dstx;
922         cb += skip2;
923         cr += skip2;
924
925         if (dstx & 1) {
926             YUVA_IN(y, u, v, a, p, pal);
927             u1 = u;
928             v1 = v;
929             a1 = a;
930             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
931             p += wrap3;
932             lum += wrap;
933             YUVA_IN(y, u, v, a, p, pal);
934             u1 += u;
935             v1 += v;
936             a1 += a;
937             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
938             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
939             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
940             cb++;
941             cr++;
942             p += -wrap3 + BPP;
943             lum += -wrap + 1;
944         }
945         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
946             YUVA_IN(y, u, v, a, p, pal);
947             u1 = u;
948             v1 = v;
949             a1 = a;
950             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
951
952             YUVA_IN(y, u, v, a, p + BPP, pal);
953             u1 += u;
954             v1 += v;
955             a1 += a;
956             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
957             p += wrap3;
958             lum += wrap;
959
960             YUVA_IN(y, u, v, a, p, pal);
961             u1 += u;
962             v1 += v;
963             a1 += a;
964             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
965
966             YUVA_IN(y, u, v, a, p + BPP, pal);
967             u1 += u;
968             v1 += v;
969             a1 += a;
970             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
971
972             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
973             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
974
975             cb++;
976             cr++;
977             p += -wrap3 + 2 * BPP;
978             lum += -wrap + 2;
979         }
980         if (w) {
981             YUVA_IN(y, u, v, a, p, pal);
982             u1 = u;
983             v1 = v;
984             a1 = a;
985             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
986             p += wrap3;
987             lum += wrap;
988             YUVA_IN(y, u, v, a, p, pal);
989             u1 += u;
990             v1 += v;
991             a1 += a;
992             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
993             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
994             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
995             cb++;
996             cr++;
997             p += -wrap3 + BPP;
998             lum += -wrap + 1;
999         }
1000         p += wrap3 + (wrap3 - dstw * BPP);
1001         lum += wrap + (wrap - dstw - dstx);
1002         cb += dst->linesize[1] - width2 - skip2;
1003         cr += dst->linesize[2] - width2 - skip2;
1004     }
1005     /* handle odd height */
1006     if (h) {
1007         lum += dstx;
1008         cb += skip2;
1009         cr += skip2;
1010
1011         if (dstx & 1) {
1012             YUVA_IN(y, u, v, a, p, pal);
1013             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1014             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1015             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1016             cb++;
1017             cr++;
1018             lum++;
1019             p += BPP;
1020         }
1021         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
1022             YUVA_IN(y, u, v, a, p, pal);
1023             u1 = u;
1024             v1 = v;
1025             a1 = a;
1026             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1027
1028             YUVA_IN(y, u, v, a, p + BPP, pal);
1029             u1 += u;
1030             v1 += v;
1031             a1 += a;
1032             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
1033             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
1034             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
1035             cb++;
1036             cr++;
1037             p += 2 * BPP;
1038             lum += 2;
1039         }
1040         if (w) {
1041             YUVA_IN(y, u, v, a, p, pal);
1042             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1043             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1044             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1045         }
1046     }
1047 }
1048
1049 static void free_picture(Frame *vp)
1050 {
1051      if (vp->bmp) {
1052          SDL_FreeYUVOverlay(vp->bmp);
1053          vp->bmp = NULL;
1054      }
1055 }
1056
1057 static void calculate_display_rect(SDL_Rect *rect,
1058                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
1059                                    int pic_width, int pic_height, AVRational pic_sar)
1060 {
1061     float aspect_ratio;
1062     int width, height, x, y;
1063
1064     if (pic_sar.num == 0)
1065         aspect_ratio = 0;
1066     else
1067         aspect_ratio = av_q2d(pic_sar);
1068
1069     if (aspect_ratio <= 0.0)
1070         aspect_ratio = 1.0;
1071     aspect_ratio *= (float)pic_width / (float)pic_height;
1072
1073     /* XXX: we suppose the screen has a 1.0 pixel ratio */
1074     height = scr_height;
1075     width = ((int)rint(height * aspect_ratio)) & ~1;
1076     if (width > scr_width) {
1077         width = scr_width;
1078         height = ((int)rint(width / aspect_ratio)) & ~1;
1079     }
1080     x = (scr_width - width) / 2;
1081     y = (scr_height - height) / 2;
1082     rect->x = scr_xleft + x;
1083     rect->y = scr_ytop  + y;
1084     rect->w = FFMAX(width,  1);
1085     rect->h = FFMAX(height, 1);
1086 }
1087
1088 static void video_image_display(VideoState *is)
1089 {
1090     Frame *vp;
1091     Frame *sp;
1092     AVPicture pict;
1093     SDL_Rect rect;
1094     int i;
1095
1096     vp = frame_queue_peek(&is->pictq);
1097     if (vp->bmp) {
1098         if (is->subtitle_st) {
1099             if (frame_queue_nb_remaining(&is->subpq) > 0) {
1100                 sp = frame_queue_peek(&is->subpq);
1101
1102                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
1103                     SDL_LockYUVOverlay (vp->bmp);
1104
1105                     pict.data[0] = vp->bmp->pixels[0];
1106                     pict.data[1] = vp->bmp->pixels[2];
1107                     pict.data[2] = vp->bmp->pixels[1];
1108
1109                     pict.linesize[0] = vp->bmp->pitches[0];
1110                     pict.linesize[1] = vp->bmp->pitches[2];
1111                     pict.linesize[2] = vp->bmp->pitches[1];
1112
1113                     for (i = 0; i < sp->sub.num_rects; i++)
1114                         blend_subrect(&pict, sp->sub.rects[i],
1115                                       vp->bmp->w, vp->bmp->h);
1116
1117                     SDL_UnlockYUVOverlay (vp->bmp);
1118                 }
1119             }
1120         }
1121
1122         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1123
1124         SDL_DisplayYUVOverlay(vp->bmp, &rect);
1125
1126         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) {
1127             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1128             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
1129             is->last_display_rect = rect;
1130         }
1131     }
1132 }
1133
1134 static inline int compute_mod(int a, int b)
1135 {
1136     return a < 0 ? a%b + b : a%b;
1137 }
1138
1139 static void video_audio_display(VideoState *s)
1140 {
1141     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1142     int ch, channels, h, h2, bgcolor, fgcolor;
1143     int64_t time_diff;
1144     int rdft_bits, nb_freq;
1145
1146     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1147         ;
1148     nb_freq = 1 << (rdft_bits - 1);
1149
1150     /* compute display index : center on currently output samples */
1151     channels = s->audio_tgt.channels;
1152     nb_display_channels = channels;
1153     if (!s->paused) {
1154         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1155         n = 2 * channels;
1156         delay = s->audio_write_buf_size;
1157         delay /= n;
1158
1159         /* to be more precise, we take into account the time spent since
1160            the last buffer computation */
1161         if (audio_callback_time) {
1162             time_diff = av_gettime_relative() - audio_callback_time;
1163             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1164         }
1165
1166         delay += 2 * data_used;
1167         if (delay < data_used)
1168             delay = data_used;
1169
1170         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1171         if (s->show_mode == SHOW_MODE_WAVES) {
1172             h = INT_MIN;
1173             for (i = 0; i < 1000; i += channels) {
1174                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1175                 int a = s->sample_array[idx];
1176                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1177                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1178                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1179                 int score = a - d;
1180                 if (h < score && (b ^ c) < 0) {
1181                     h = score;
1182                     i_start = idx;
1183                 }
1184             }
1185         }
1186
1187         s->last_i_start = i_start;
1188     } else {
1189         i_start = s->last_i_start;
1190     }
1191
1192     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1193     if (s->show_mode == SHOW_MODE_WAVES) {
1194         fill_rectangle(screen,
1195                        s->xleft, s->ytop, s->width, s->height,
1196                        bgcolor, 0);
1197
1198         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
1199
1200         /* total height for one channel */
1201         h = s->height / nb_display_channels;
1202         /* graph height / 2 */
1203         h2 = (h * 9) / 20;
1204         for (ch = 0; ch < nb_display_channels; ch++) {
1205             i = i_start + ch;
1206             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1207             for (x = 0; x < s->width; x++) {
1208                 y = (s->sample_array[i] * h2) >> 15;
1209                 if (y < 0) {
1210                     y = -y;
1211                     ys = y1 - y;
1212                 } else {
1213                     ys = y1;
1214                 }
1215                 fill_rectangle(screen,
1216                                s->xleft + x, ys, 1, y,
1217                                fgcolor, 0);
1218                 i += channels;
1219                 if (i >= SAMPLE_ARRAY_SIZE)
1220                     i -= SAMPLE_ARRAY_SIZE;
1221             }
1222         }
1223
1224         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
1225
1226         for (ch = 1; ch < nb_display_channels; ch++) {
1227             y = s->ytop + ch * h;
1228             fill_rectangle(screen,
1229                            s->xleft, y, s->width, 1,
1230                            fgcolor, 0);
1231         }
1232         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
1233     } else {
1234         nb_display_channels= FFMIN(nb_display_channels, 2);
1235         if (rdft_bits != s->rdft_bits) {
1236             av_rdft_end(s->rdft);
1237             av_free(s->rdft_data);
1238             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1239             s->rdft_bits = rdft_bits;
1240             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1241         }
1242         {
1243             FFTSample *data[2];
1244             for (ch = 0; ch < nb_display_channels; ch++) {
1245                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1246                 i = i_start + ch;
1247                 for (x = 0; x < 2 * nb_freq; x++) {
1248                     double w = (x-nb_freq) * (1.0 / nb_freq);
1249                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1250                     i += channels;
1251                     if (i >= SAMPLE_ARRAY_SIZE)
1252                         i -= SAMPLE_ARRAY_SIZE;
1253                 }
1254                 av_rdft_calc(s->rdft, data[ch]);
1255             }
1256             /* Least efficient way to do this, we should of course
1257              * directly access it but it is more than fast enough. */
1258             for (y = 0; y < s->height; y++) {
1259                 double w = 1 / sqrt(nb_freq);
1260                 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]));
1261                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1262                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1263                 a = FFMIN(a, 255);
1264                 b = FFMIN(b, 255);
1265                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1266
1267                 fill_rectangle(screen,
1268                             s->xpos, s->height-y, 1, 1,
1269                             fgcolor, 0);
1270             }
1271         }
1272         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1273         if (!s->paused)
1274             s->xpos++;
1275         if (s->xpos >= s->width)
1276             s->xpos= s->xleft;
1277     }
1278 }
1279
1280 static void stream_close(VideoState *is)
1281 {
1282     /* XXX: use a special url_shutdown call to abort parse cleanly */
1283     is->abort_request = 1;
1284     SDL_WaitThread(is->read_tid, NULL);
1285     packet_queue_destroy(&is->videoq);
1286     packet_queue_destroy(&is->audioq);
1287     packet_queue_destroy(&is->subtitleq);
1288
1289     /* free all pictures */
1290     frame_queue_destory(&is->pictq);
1291     frame_queue_destory(&is->sampq);
1292     frame_queue_destory(&is->subpq);
1293     SDL_DestroyCond(is->continue_read_thread);
1294 #if !CONFIG_AVFILTER
1295     sws_freeContext(is->img_convert_ctx);
1296 #endif
1297     av_free(is);
1298 }
1299
1300 static void do_exit(VideoState *is)
1301 {
1302     if (is) {
1303         stream_close(is);
1304     }
1305     av_lockmgr_register(NULL);
1306     uninit_opts();
1307 #if CONFIG_AVFILTER
1308     av_freep(&vfilters_list);
1309 #endif
1310     avformat_network_deinit();
1311     if (show_status)
1312         printf("\n");
1313     SDL_Quit();
1314     av_log(NULL, AV_LOG_QUIET, "%s", "");
1315     exit(0);
1316 }
1317
1318 static void sigterm_handler(int sig)
1319 {
1320     exit(123);
1321 }
1322
1323 static void set_default_window_size(int width, int height, AVRational sar)
1324 {
1325     SDL_Rect rect;
1326     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1327     default_width  = rect.w;
1328     default_height = rect.h;
1329 }
1330
1331 static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
1332 {
1333     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1334     int w,h;
1335
1336     if (is_full_screen) flags |= SDL_FULLSCREEN;
1337     else                flags |= SDL_RESIZABLE;
1338
1339     if (vp && vp->width)
1340         set_default_window_size(vp->width, vp->height, vp->sar);
1341
1342     if (is_full_screen && fs_screen_width) {
1343         w = fs_screen_width;
1344         h = fs_screen_height;
1345     } else if (!is_full_screen && screen_width) {
1346         w = screen_width;
1347         h = screen_height;
1348     } else {
1349         w = default_width;
1350         h = default_height;
1351     }
1352     w = FFMIN(16383, w);
1353     if (screen && is->width == screen->w && screen->w == w
1354        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1355         return 0;
1356     screen = SDL_SetVideoMode(w, h, 0, flags);
1357     if (!screen) {
1358         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1359         do_exit(is);
1360     }
1361     if (!window_title)
1362         window_title = input_filename;
1363     SDL_WM_SetCaption(window_title, window_title);
1364
1365     is->width  = screen->w;
1366     is->height = screen->h;
1367
1368     return 0;
1369 }
1370
1371 /* display the current picture, if any */
1372 static void video_display(VideoState *is)
1373 {
1374     if (!screen)
1375         video_open(is, 0, NULL);
1376     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1377         video_audio_display(is);
1378     else if (is->video_st)
1379         video_image_display(is);
1380 }
1381
1382 static double get_clock(Clock *c)
1383 {
1384     if (*c->queue_serial != c->serial)
1385         return NAN;
1386     if (c->paused) {
1387         return c->pts;
1388     } else {
1389         double time = av_gettime_relative() / 1000000.0;
1390         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1391     }
1392 }
1393
1394 static void set_clock_at(Clock *c, double pts, int serial, double time)
1395 {
1396     c->pts = pts;
1397     c->last_updated = time;
1398     c->pts_drift = c->pts - time;
1399     c->serial = serial;
1400 }
1401
1402 static void set_clock(Clock *c, double pts, int serial)
1403 {
1404     double time = av_gettime_relative() / 1000000.0;
1405     set_clock_at(c, pts, serial, time);
1406 }
1407
1408 static void set_clock_speed(Clock *c, double speed)
1409 {
1410     set_clock(c, get_clock(c), c->serial);
1411     c->speed = speed;
1412 }
1413
1414 static void init_clock(Clock *c, int *queue_serial)
1415 {
1416     c->speed = 1.0;
1417     c->paused = 0;
1418     c->queue_serial = queue_serial;
1419     set_clock(c, NAN, -1);
1420 }
1421
1422 static void sync_clock_to_slave(Clock *c, Clock *slave)
1423 {
1424     double clock = get_clock(c);
1425     double slave_clock = get_clock(slave);
1426     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1427         set_clock(c, slave_clock, slave->serial);
1428 }
1429
1430 static int get_master_sync_type(VideoState *is) {
1431     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1432         if (is->video_st)
1433             return AV_SYNC_VIDEO_MASTER;
1434         else
1435             return AV_SYNC_AUDIO_MASTER;
1436     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1437         if (is->audio_st)
1438             return AV_SYNC_AUDIO_MASTER;
1439         else
1440             return AV_SYNC_EXTERNAL_CLOCK;
1441     } else {
1442         return AV_SYNC_EXTERNAL_CLOCK;
1443     }
1444 }
1445
1446 /* get the current master clock value */
1447 static double get_master_clock(VideoState *is)
1448 {
1449     double val;
1450
1451     switch (get_master_sync_type(is)) {
1452         case AV_SYNC_VIDEO_MASTER:
1453             val = get_clock(&is->vidclk);
1454             break;
1455         case AV_SYNC_AUDIO_MASTER:
1456             val = get_clock(&is->audclk);
1457             break;
1458         default:
1459             val = get_clock(&is->extclk);
1460             break;
1461     }
1462     return val;
1463 }
1464
1465 static void check_external_clock_speed(VideoState *is) {
1466    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1467        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1468        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1469    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1470               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1471        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1472    } else {
1473        double speed = is->extclk.speed;
1474        if (speed != 1.0)
1475            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1476    }
1477 }
1478
1479 /* seek in the stream */
1480 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1481 {
1482     if (!is->seek_req) {
1483         is->seek_pos = pos;
1484         is->seek_rel = rel;
1485         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1486         if (seek_by_bytes)
1487             is->seek_flags |= AVSEEK_FLAG_BYTE;
1488         is->seek_req = 1;
1489         SDL_CondSignal(is->continue_read_thread);
1490     }
1491 }
1492
1493 /* pause or resume the video */
1494 static void stream_toggle_pause(VideoState *is)
1495 {
1496     if (is->paused) {
1497         is->frame_timer += av_gettime_relative() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
1498         if (is->read_pause_return != AVERROR(ENOSYS)) {
1499             is->vidclk.paused = 0;
1500         }
1501         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1502     }
1503     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1504     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1505 }
1506
1507 static void toggle_pause(VideoState *is)
1508 {
1509     stream_toggle_pause(is);
1510     is->step = 0;
1511 }
1512
1513 static void step_to_next_frame(VideoState *is)
1514 {
1515     /* if the stream is paused unpause it, then step */
1516     if (is->paused)
1517         stream_toggle_pause(is);
1518     is->step = 1;
1519 }
1520
1521 static double compute_target_delay(double delay, VideoState *is)
1522 {
1523     double sync_threshold, diff;
1524
1525     /* update delay to follow master synchronisation source */
1526     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1527         /* if video is slave, we try to correct big delays by
1528            duplicating or deleting a frame */
1529         diff = get_clock(&is->vidclk) - get_master_clock(is);
1530
1531         /* skip or repeat frame. We take into account the
1532            delay to compute the threshold. I still don't know
1533            if it is the best guess */
1534         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1535         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1536             if (diff <= -sync_threshold)
1537                 delay = FFMAX(0, delay + diff);
1538             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1539                 delay = delay + diff;
1540             else if (diff >= sync_threshold)
1541                 delay = 2 * delay;
1542         }
1543     }
1544
1545     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1546             delay, -diff);
1547
1548     return delay;
1549 }
1550
1551 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1552     if (vp->serial == nextvp->serial) {
1553         double duration = nextvp->pts - vp->pts;
1554         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1555             return vp->duration;
1556         else
1557             return duration;
1558     } else {
1559         return 0.0;
1560     }
1561 }
1562
1563 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1564     /* update current video pts */
1565     set_clock(&is->vidclk, pts, serial);
1566     sync_clock_to_slave(&is->extclk, &is->vidclk);
1567 }
1568
1569 /* called to display each frame */
1570 static void video_refresh(void *opaque, double *remaining_time)
1571 {
1572     VideoState *is = opaque;
1573     double time;
1574
1575     Frame *sp, *sp2;
1576
1577     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1578         check_external_clock_speed(is);
1579
1580     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1581         time = av_gettime_relative() / 1000000.0;
1582         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1583             video_display(is);
1584             is->last_vis_time = time;
1585         }
1586         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1587     }
1588
1589     if (is->video_st) {
1590         int redisplay = 0;
1591         if (is->force_refresh)
1592             redisplay = frame_queue_prev(&is->pictq);
1593 retry:
1594         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1595             // nothing to do, no picture to display in the queue
1596         } else {
1597             double last_duration, duration, delay;
1598             Frame *vp, *lastvp;
1599
1600             /* dequeue the picture */
1601             lastvp = frame_queue_peek_last(&is->pictq);
1602             vp = frame_queue_peek(&is->pictq);
1603
1604             if (vp->serial != is->videoq.serial) {
1605                 frame_queue_next(&is->pictq);
1606                 redisplay = 0;
1607                 goto retry;
1608             }
1609
1610             if (lastvp->serial != vp->serial && !redisplay)
1611                 is->frame_timer = av_gettime_relative() / 1000000.0;
1612
1613             if (is->paused)
1614                 goto display;
1615
1616             /* compute nominal last_duration */
1617             last_duration = vp_duration(is, lastvp, vp);
1618             if (redisplay)
1619                 delay = 0.0;
1620             else
1621                 delay = compute_target_delay(last_duration, is);
1622
1623             time= av_gettime_relative()/1000000.0;
1624             if (time < is->frame_timer + delay && !redisplay) {
1625                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1626                 return;
1627             }
1628
1629             is->frame_timer += delay;
1630             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1631                 is->frame_timer = time;
1632
1633             SDL_LockMutex(is->pictq.mutex);
1634             if (!redisplay && !isnan(vp->pts))
1635                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1636             SDL_UnlockMutex(is->pictq.mutex);
1637
1638             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1639                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1640                 duration = vp_duration(is, vp, nextvp);
1641                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1642                     if (!redisplay)
1643                         is->frame_drops_late++;
1644                     frame_queue_next(&is->pictq);
1645                     redisplay = 0;
1646                     goto retry;
1647                 }
1648             }
1649
1650             if (is->subtitle_st) {
1651                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1652                         sp = frame_queue_peek(&is->subpq);
1653
1654                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1655                             sp2 = frame_queue_peek_next(&is->subpq);
1656                         else
1657                             sp2 = NULL;
1658
1659                         if (sp->serial != is->subtitleq.serial
1660                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1661                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1662                         {
1663                             frame_queue_next(&is->subpq);
1664                         } else {
1665                             break;
1666                         }
1667                     }
1668             }
1669
1670 display:
1671             /* display picture */
1672             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1673                 video_display(is);
1674
1675             frame_queue_next(&is->pictq);
1676
1677             if (is->step && !is->paused)
1678                 stream_toggle_pause(is);
1679         }
1680     }
1681     is->force_refresh = 0;
1682     if (show_status) {
1683         static int64_t last_time;
1684         int64_t cur_time;
1685         int aqsize, vqsize, sqsize;
1686         double av_diff;
1687
1688         cur_time = av_gettime_relative();
1689         if (!last_time || (cur_time - last_time) >= 30000) {
1690             aqsize = 0;
1691             vqsize = 0;
1692             sqsize = 0;
1693             if (is->audio_st)
1694                 aqsize = is->audioq.size;
1695             if (is->video_st)
1696                 vqsize = is->videoq.size;
1697             if (is->subtitle_st)
1698                 sqsize = is->subtitleq.size;
1699             av_diff = 0;
1700             if (is->audio_st && is->video_st)
1701                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1702             else if (is->video_st)
1703                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1704             else if (is->audio_st)
1705                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1706             av_log(NULL, AV_LOG_INFO,
1707                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1708                    get_master_clock(is),
1709                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1710                    av_diff,
1711                    is->frame_drops_early + is->frame_drops_late,
1712                    aqsize / 1024,
1713                    vqsize / 1024,
1714                    sqsize,
1715                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1716                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1717             fflush(stdout);
1718             last_time = cur_time;
1719         }
1720     }
1721 }
1722
1723 /* allocate a picture (needs to do that in main thread to avoid
1724    potential locking problems */
1725 static void alloc_picture(VideoState *is)
1726 {
1727     Frame *vp;
1728     int64_t bufferdiff;
1729
1730     vp = &is->pictq.queue[is->pictq.windex];
1731
1732     free_picture(vp);
1733
1734     video_open(is, 0, vp);
1735
1736     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1737                                    SDL_YV12_OVERLAY,
1738                                    screen);
1739     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1740     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1741         /* SDL allocates a buffer smaller than requested if the video
1742          * overlay hardware is unable to support the requested size. */
1743         av_log(NULL, AV_LOG_FATAL,
1744                "Error: the video system does not support an image\n"
1745                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1746                         "to reduce the image size.\n", vp->width, vp->height );
1747         do_exit(is);
1748     }
1749
1750     SDL_LockMutex(is->pictq.mutex);
1751     vp->allocated = 1;
1752     SDL_CondSignal(is->pictq.cond);
1753     SDL_UnlockMutex(is->pictq.mutex);
1754 }
1755
1756 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1757     int i, width, height;
1758     Uint8 *p, *maxp;
1759     for (i = 0; i < 3; i++) {
1760         width  = bmp->w;
1761         height = bmp->h;
1762         if (i > 0) {
1763             width  >>= 1;
1764             height >>= 1;
1765         }
1766         if (bmp->pitches[i] > width) {
1767             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1768             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1769                 *(p+1) = *p;
1770         }
1771     }
1772 }
1773
1774 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1775 {
1776     Frame *vp;
1777
1778 #if defined(DEBUG_SYNC) && 0
1779     printf("frame_type=%c pts=%0.3f\n",
1780            av_get_picture_type_char(src_frame->pict_type), pts);
1781 #endif
1782
1783     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1784         return -1;
1785
1786     vp->sar = src_frame->sample_aspect_ratio;
1787
1788     /* alloc or resize hardware picture buffer */
1789     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1790         vp->width  != src_frame->width ||
1791         vp->height != src_frame->height) {
1792         SDL_Event event;
1793
1794         vp->allocated  = 0;
1795         vp->reallocate = 0;
1796         vp->width = src_frame->width;
1797         vp->height = src_frame->height;
1798
1799         /* the allocation must be done in the main thread to avoid
1800            locking problems. */
1801         event.type = FF_ALLOC_EVENT;
1802         event.user.data1 = is;
1803         SDL_PushEvent(&event);
1804
1805         /* wait until the picture is allocated */
1806         SDL_LockMutex(is->pictq.mutex);
1807         while (!vp->allocated && !is->videoq.abort_request) {
1808             SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1809         }
1810         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1811         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1812             while (!vp->allocated && !is->abort_request) {
1813                 SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1814             }
1815         }
1816         SDL_UnlockMutex(is->pictq.mutex);
1817
1818         if (is->videoq.abort_request)
1819             return -1;
1820     }
1821
1822     /* if the frame is not skipped, then display it */
1823     if (vp->bmp) {
1824         AVPicture pict = { { 0 } };
1825
1826         /* get a pointer on the bitmap */
1827         SDL_LockYUVOverlay (vp->bmp);
1828
1829         pict.data[0] = vp->bmp->pixels[0];
1830         pict.data[1] = vp->bmp->pixels[2];
1831         pict.data[2] = vp->bmp->pixels[1];
1832
1833         pict.linesize[0] = vp->bmp->pitches[0];
1834         pict.linesize[1] = vp->bmp->pitches[2];
1835         pict.linesize[2] = vp->bmp->pitches[1];
1836
1837 #if CONFIG_AVFILTER
1838         // FIXME use direct rendering
1839         av_picture_copy(&pict, (AVPicture *)src_frame,
1840                         src_frame->format, vp->width, vp->height);
1841 #else
1842         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1843         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1844             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1845             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1846         if (!is->img_convert_ctx) {
1847             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1848             exit(1);
1849         }
1850         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1851                   0, vp->height, pict.data, pict.linesize);
1852 #endif
1853         /* workaround SDL PITCH_WORKAROUND */
1854         duplicate_right_border_pixels(vp->bmp);
1855         /* update the bitmap content */
1856         SDL_UnlockYUVOverlay(vp->bmp);
1857
1858         vp->pts = pts;
1859         vp->duration = duration;
1860         vp->pos = pos;
1861         vp->serial = serial;
1862
1863         /* now we can update the picture count */
1864         frame_queue_push(&is->pictq);
1865     }
1866     return 0;
1867 }
1868
1869 static int get_video_frame(VideoState *is, AVFrame *frame)
1870 {
1871     int got_picture;
1872
1873     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1874         return -1;
1875
1876     if (got_picture) {
1877         double dpts = NAN;
1878
1879         if (frame->pts != AV_NOPTS_VALUE)
1880             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1881
1882         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1883
1884         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1885             if (frame->pts != AV_NOPTS_VALUE) {
1886                 double diff = dpts - get_master_clock(is);
1887                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1888                     diff - is->frame_last_filter_delay < 0 &&
1889                     is->viddec.pkt_serial == is->vidclk.serial &&
1890                     is->videoq.nb_packets) {
1891                     is->frame_drops_early++;
1892                     av_frame_unref(frame);
1893                     got_picture = 0;
1894                 }
1895             }
1896         }
1897     }
1898
1899     return got_picture;
1900 }
1901
1902 #if CONFIG_AVFILTER
1903 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1904                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1905 {
1906     int ret, i;
1907     int nb_filters = graph->nb_filters;
1908     AVFilterInOut *outputs = NULL, *inputs = NULL;
1909
1910     if (filtergraph) {
1911         outputs = avfilter_inout_alloc();
1912         inputs  = avfilter_inout_alloc();
1913         if (!outputs || !inputs) {
1914             ret = AVERROR(ENOMEM);
1915             goto fail;
1916         }
1917
1918         outputs->name       = av_strdup("in");
1919         outputs->filter_ctx = source_ctx;
1920         outputs->pad_idx    = 0;
1921         outputs->next       = NULL;
1922
1923         inputs->name        = av_strdup("out");
1924         inputs->filter_ctx  = sink_ctx;
1925         inputs->pad_idx     = 0;
1926         inputs->next        = NULL;
1927
1928         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1929             goto fail;
1930     } else {
1931         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1932             goto fail;
1933     }
1934
1935     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1936     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1937         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1938
1939     ret = avfilter_graph_config(graph, NULL);
1940 fail:
1941     avfilter_inout_free(&outputs);
1942     avfilter_inout_free(&inputs);
1943     return ret;
1944 }
1945
1946 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1947 {
1948     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1949     char sws_flags_str[128];
1950     char buffersrc_args[256];
1951     int ret;
1952     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1953     AVCodecContext *codec = is->video_st->codec;
1954     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1955
1956     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1957     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1958     graph->scale_sws_opts = av_strdup(sws_flags_str);
1959
1960     snprintf(buffersrc_args, sizeof(buffersrc_args),
1961              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1962              frame->width, frame->height, frame->format,
1963              is->video_st->time_base.num, is->video_st->time_base.den,
1964              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1965     if (fr.num && fr.den)
1966         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1967
1968     if ((ret = avfilter_graph_create_filter(&filt_src,
1969                                             avfilter_get_by_name("buffer"),
1970                                             "ffplay_buffer", buffersrc_args, NULL,
1971                                             graph)) < 0)
1972         goto fail;
1973
1974     ret = avfilter_graph_create_filter(&filt_out,
1975                                        avfilter_get_by_name("buffersink"),
1976                                        "ffplay_buffersink", NULL, NULL, graph);
1977     if (ret < 0)
1978         goto fail;
1979
1980     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1981         goto fail;
1982
1983     last_filter = filt_out;
1984
1985 /* Note: this macro adds a filter before the lastly added filter, so the
1986  * processing order of the filters is in reverse */
1987 #define INSERT_FILT(name, arg) do {                                         \
1988     AVFilterContext *filt_ctx;                                              \
1989                                                                             \
1990     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1991                                        avfilter_get_by_name(name),          \
1992                                        "ffplay_" name, arg, NULL, graph);   \
1993     if (ret < 0)                                                            \
1994         goto fail;                                                          \
1995                                                                             \
1996     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                       \
1997     if (ret < 0)                                                            \
1998         goto fail;                                                          \
1999                                                                             \
2000     last_filter = filt_ctx;                                                 \
2001 } while (0)
2002
2003     /* SDL YUV code is not handling odd width/height for some driver
2004      * combinations, therefore we crop the picture to an even width/height. */
2005     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
2006
2007     if (autorotate) {
2008         AVDictionaryEntry *rotate_tag = av_dict_get(is->video_st->metadata, "rotate", NULL, 0);
2009         if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2010             if (!strcmp(rotate_tag->value, "90")) {
2011                 INSERT_FILT("transpose", "clock");
2012             } else if (!strcmp(rotate_tag->value, "180")) {
2013                 INSERT_FILT("hflip", NULL);
2014                 INSERT_FILT("vflip", NULL);
2015             } else if (!strcmp(rotate_tag->value, "270")) {
2016                 INSERT_FILT("transpose", "cclock");
2017             } else {
2018                 char rotate_buf[64];
2019                 snprintf(rotate_buf, sizeof(rotate_buf), "%s*PI/180", rotate_tag->value);
2020                 INSERT_FILT("rotate", rotate_buf);
2021             }
2022         }
2023     }
2024
2025     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
2026         goto fail;
2027
2028     is->in_video_filter  = filt_src;
2029     is->out_video_filter = filt_out;
2030
2031 fail:
2032     return ret;
2033 }
2034
2035 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
2036 {
2037     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
2038     int sample_rates[2] = { 0, -1 };
2039     int64_t channel_layouts[2] = { 0, -1 };
2040     int channels[2] = { 0, -1 };
2041     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
2042     char aresample_swr_opts[512] = "";
2043     AVDictionaryEntry *e = NULL;
2044     char asrc_args[256];
2045     int ret;
2046
2047     avfilter_graph_free(&is->agraph);
2048     if (!(is->agraph = avfilter_graph_alloc()))
2049         return AVERROR(ENOMEM);
2050
2051     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
2052         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
2053     if (strlen(aresample_swr_opts))
2054         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
2055     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
2056
2057     ret = snprintf(asrc_args, sizeof(asrc_args),
2058                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
2059                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
2060                    is->audio_filter_src.channels,
2061                    1, is->audio_filter_src.freq);
2062     if (is->audio_filter_src.channel_layout)
2063         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
2064                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
2065
2066     ret = avfilter_graph_create_filter(&filt_asrc,
2067                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
2068                                        asrc_args, NULL, is->agraph);
2069     if (ret < 0)
2070         goto end;
2071
2072
2073     ret = avfilter_graph_create_filter(&filt_asink,
2074                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2075                                        NULL, NULL, is->agraph);
2076     if (ret < 0)
2077         goto end;
2078
2079     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2080         goto end;
2081     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2082         goto end;
2083
2084     if (force_output_format) {
2085         channel_layouts[0] = is->audio_tgt.channel_layout;
2086         channels       [0] = is->audio_tgt.channels;
2087         sample_rates   [0] = is->audio_tgt.freq;
2088         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2089             goto end;
2090         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2091             goto end;
2092         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2093             goto end;
2094         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2095             goto end;
2096     }
2097
2098
2099     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2100         goto end;
2101
2102     is->in_audio_filter  = filt_asrc;
2103     is->out_audio_filter = filt_asink;
2104
2105 end:
2106     if (ret < 0)
2107         avfilter_graph_free(&is->agraph);
2108     return ret;
2109 }
2110 #endif  /* CONFIG_AVFILTER */
2111
2112 static int audio_thread(void *arg)
2113 {
2114     VideoState *is = arg;
2115     AVFrame *frame = av_frame_alloc();
2116     Frame *af;
2117 #if CONFIG_AVFILTER
2118     int last_serial = -1;
2119     int64_t dec_channel_layout;
2120     int reconfigure;
2121 #endif
2122     int got_frame = 0;
2123     AVRational tb;
2124     int ret = 0;
2125
2126     if (!frame)
2127         return AVERROR(ENOMEM);
2128
2129     do {
2130         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2131             goto the_end;
2132
2133         if (got_frame) {
2134                 tb = (AVRational){1, frame->sample_rate};
2135
2136 #if CONFIG_AVFILTER
2137                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, av_frame_get_channels(frame));
2138
2139                 reconfigure =
2140                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2141                                    frame->format, av_frame_get_channels(frame))    ||
2142                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2143                     is->audio_filter_src.freq           != frame->sample_rate ||
2144                     is->auddec.pkt_serial               != last_serial;
2145
2146                 if (reconfigure) {
2147                     char buf1[1024], buf2[1024];
2148                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2149                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2150                     av_log(NULL, AV_LOG_DEBUG,
2151                            "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",
2152                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2153                            frame->sample_rate, av_frame_get_channels(frame), av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2154
2155                     is->audio_filter_src.fmt            = frame->format;
2156                     is->audio_filter_src.channels       = av_frame_get_channels(frame);
2157                     is->audio_filter_src.channel_layout = dec_channel_layout;
2158                     is->audio_filter_src.freq           = frame->sample_rate;
2159                     last_serial                         = is->auddec.pkt_serial;
2160
2161                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2162                         goto the_end;
2163                 }
2164
2165             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2166                 goto the_end;
2167
2168             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2169                 tb = is->out_audio_filter->inputs[0]->time_base;
2170 #endif
2171                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2172                     goto the_end;
2173
2174                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2175                 af->pos = av_frame_get_pkt_pos(frame);
2176                 af->serial = is->auddec.pkt_serial;
2177                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2178
2179                 av_frame_move_ref(af->frame, frame);
2180                 frame_queue_push(&is->sampq);
2181
2182 #if CONFIG_AVFILTER
2183                 if (is->audioq.serial != is->auddec.pkt_serial)
2184                     break;
2185             }
2186             if (ret == AVERROR_EOF)
2187                 is->auddec.finished = is->auddec.pkt_serial;
2188 #endif
2189         }
2190     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2191  the_end:
2192 #if CONFIG_AVFILTER
2193     avfilter_graph_free(&is->agraph);
2194 #endif
2195     av_frame_free(&frame);
2196     return ret;
2197 }
2198
2199 static int video_thread(void *arg)
2200 {
2201     VideoState *is = arg;
2202     AVFrame *frame = av_frame_alloc();
2203     double pts;
2204     double duration;
2205     int ret;
2206     AVRational tb = is->video_st->time_base;
2207     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2208
2209 #if CONFIG_AVFILTER
2210     AVFilterGraph *graph = avfilter_graph_alloc();
2211     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2212     int last_w = 0;
2213     int last_h = 0;
2214     enum AVPixelFormat last_format = -2;
2215     int last_serial = -1;
2216     int last_vfilter_idx = 0;
2217 #endif
2218
2219     for (;;) {
2220         ret = get_video_frame(is, frame);
2221         if (ret < 0)
2222             goto the_end;
2223         if (!ret)
2224             continue;
2225
2226 #if CONFIG_AVFILTER
2227         if (   last_w != frame->width
2228             || last_h != frame->height
2229             || last_format != frame->format
2230             || last_serial != is->viddec.pkt_serial
2231             || last_vfilter_idx != is->vfilter_idx) {
2232             av_log(NULL, AV_LOG_DEBUG,
2233                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2234                    last_w, last_h,
2235                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2236                    frame->width, frame->height,
2237                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2238             avfilter_graph_free(&graph);
2239             graph = avfilter_graph_alloc();
2240             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2241                 SDL_Event event;
2242                 event.type = FF_QUIT_EVENT;
2243                 event.user.data1 = is;
2244                 SDL_PushEvent(&event);
2245                 goto the_end;
2246             }
2247             filt_in  = is->in_video_filter;
2248             filt_out = is->out_video_filter;
2249             last_w = frame->width;
2250             last_h = frame->height;
2251             last_format = frame->format;
2252             last_serial = is->viddec.pkt_serial;
2253             last_vfilter_idx = is->vfilter_idx;
2254             frame_rate = filt_out->inputs[0]->frame_rate;
2255         }
2256
2257         ret = av_buffersrc_add_frame(filt_in, frame);
2258         if (ret < 0)
2259             goto the_end;
2260
2261         while (ret >= 0) {
2262             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2263
2264             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2265             if (ret < 0) {
2266                 if (ret == AVERROR_EOF)
2267                     is->viddec.finished = is->viddec.pkt_serial;
2268                 ret = 0;
2269                 break;
2270             }
2271
2272             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2273             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2274                 is->frame_last_filter_delay = 0;
2275             tb = filt_out->inputs[0]->time_base;
2276 #endif
2277             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2278             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2279             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), is->viddec.pkt_serial);
2280             av_frame_unref(frame);
2281 #if CONFIG_AVFILTER
2282         }
2283 #endif
2284
2285         if (ret < 0)
2286             goto the_end;
2287     }
2288  the_end:
2289 #if CONFIG_AVFILTER
2290     avfilter_graph_free(&graph);
2291 #endif
2292     av_frame_free(&frame);
2293     return 0;
2294 }
2295
2296 static int subtitle_thread(void *arg)
2297 {
2298     VideoState *is = arg;
2299     Frame *sp;
2300     int got_subtitle;
2301     double pts;
2302     int i, j;
2303     int r, g, b, y, u, v, a;
2304
2305     for (;;) {
2306         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2307             return 0;
2308
2309         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2310             break;
2311
2312         pts = 0;
2313
2314         if (got_subtitle && sp->sub.format == 0) {
2315             if (sp->sub.pts != AV_NOPTS_VALUE)
2316                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2317             sp->pts = pts;
2318             sp->serial = is->subdec.pkt_serial;
2319
2320             for (i = 0; i < sp->sub.num_rects; i++)
2321             {
2322                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2323                 {
2324                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2325                     y = RGB_TO_Y_CCIR(r, g, b);
2326                     u = RGB_TO_U_CCIR(r, g, b, 0);
2327                     v = RGB_TO_V_CCIR(r, g, b, 0);
2328                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2329                 }
2330             }
2331
2332             /* now we can update the picture count */
2333             frame_queue_push(&is->subpq);
2334         } else if (got_subtitle) {
2335             avsubtitle_free(&sp->sub);
2336         }
2337     }
2338     return 0;
2339 }
2340
2341 /* copy samples for viewing in editor window */
2342 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2343 {
2344     int size, len;
2345
2346     size = samples_size / sizeof(short);
2347     while (size > 0) {
2348         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2349         if (len > size)
2350             len = size;
2351         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2352         samples += len;
2353         is->sample_array_index += len;
2354         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2355             is->sample_array_index = 0;
2356         size -= len;
2357     }
2358 }
2359
2360 /* return the wanted number of samples to get better sync if sync_type is video
2361  * or external master clock */
2362 static int synchronize_audio(VideoState *is, int nb_samples)
2363 {
2364     int wanted_nb_samples = nb_samples;
2365
2366     /* if not master, then we try to remove or add samples to correct the clock */
2367     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2368         double diff, avg_diff;
2369         int min_nb_samples, max_nb_samples;
2370
2371         diff = get_clock(&is->audclk) - get_master_clock(is);
2372
2373         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2374             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2375             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2376                 /* not enough measures to have a correct estimate */
2377                 is->audio_diff_avg_count++;
2378             } else {
2379                 /* estimate the A-V difference */
2380                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2381
2382                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2383                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2384                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2385                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2386                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2387                 }
2388                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2389                         diff, avg_diff, wanted_nb_samples - nb_samples,
2390                         is->audio_clock, is->audio_diff_threshold);
2391             }
2392         } else {
2393             /* too big difference : may be initial PTS errors, so
2394                reset A-V filter */
2395             is->audio_diff_avg_count = 0;
2396             is->audio_diff_cum       = 0;
2397         }
2398     }
2399
2400     return wanted_nb_samples;
2401 }
2402
2403 /**
2404  * Decode one audio frame and return its uncompressed size.
2405  *
2406  * The processed audio frame is decoded, converted if required, and
2407  * stored in is->audio_buf, with size in bytes given by the return
2408  * value.
2409  */
2410 static int audio_decode_frame(VideoState *is)
2411 {
2412     int data_size, resampled_data_size;
2413     int64_t dec_channel_layout;
2414     av_unused double audio_clock0;
2415     int wanted_nb_samples;
2416     Frame *af;
2417
2418     if (is->paused)
2419         return -1;
2420
2421     do {
2422         if (!(af = frame_queue_peek_readable(&is->sampq)))
2423             return -1;
2424         frame_queue_next(&is->sampq);
2425     } while (af->serial != is->audioq.serial);
2426
2427     data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(af->frame),
2428                                            af->frame->nb_samples,
2429                                            af->frame->format, 1);
2430
2431     dec_channel_layout =
2432         (af->frame->channel_layout && av_frame_get_channels(af->frame) == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2433         af->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(af->frame));
2434     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2435
2436     if (af->frame->format        != is->audio_src.fmt            ||
2437         dec_channel_layout       != is->audio_src.channel_layout ||
2438         af->frame->sample_rate   != is->audio_src.freq           ||
2439         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2440         swr_free(&is->swr_ctx);
2441         is->swr_ctx = swr_alloc_set_opts(NULL,
2442                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2443                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2444                                          0, NULL);
2445         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2446             av_log(NULL, AV_LOG_ERROR,
2447                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2448                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), av_frame_get_channels(af->frame),
2449                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2450             swr_free(&is->swr_ctx);
2451             return -1;
2452         }
2453         is->audio_src.channel_layout = dec_channel_layout;
2454         is->audio_src.channels       = av_frame_get_channels(af->frame);
2455         is->audio_src.freq = af->frame->sample_rate;
2456         is->audio_src.fmt = af->frame->format;
2457     }
2458
2459     if (is->swr_ctx) {
2460         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2461         uint8_t **out = &is->audio_buf1;
2462         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2463         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2464         int len2;
2465         if (out_size < 0) {
2466             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2467             return -1;
2468         }
2469         if (wanted_nb_samples != af->frame->nb_samples) {
2470             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2471                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2472                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2473                 return -1;
2474             }
2475         }
2476         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2477         if (!is->audio_buf1)
2478             return AVERROR(ENOMEM);
2479         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2480         if (len2 < 0) {
2481             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2482             return -1;
2483         }
2484         if (len2 == out_count) {
2485             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2486             if (swr_init(is->swr_ctx) < 0)
2487                 swr_free(&is->swr_ctx);
2488         }
2489         is->audio_buf = is->audio_buf1;
2490         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2491     } else {
2492         is->audio_buf = af->frame->data[0];
2493         resampled_data_size = data_size;
2494     }
2495
2496     audio_clock0 = is->audio_clock;
2497     /* update the audio clock with the pts */
2498     if (!isnan(af->pts))
2499         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2500     else
2501         is->audio_clock = NAN;
2502     is->audio_clock_serial = af->serial;
2503 #ifdef DEBUG
2504     {
2505         static double last_clock;
2506         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2507                is->audio_clock - last_clock,
2508                is->audio_clock, audio_clock0);
2509         last_clock = is->audio_clock;
2510     }
2511 #endif
2512     return resampled_data_size;
2513 }
2514
2515 /* prepare a new audio buffer */
2516 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2517 {
2518     VideoState *is = opaque;
2519     int audio_size, len1;
2520
2521     audio_callback_time = av_gettime_relative();
2522
2523     while (len > 0) {
2524         if (is->audio_buf_index >= is->audio_buf_size) {
2525            audio_size = audio_decode_frame(is);
2526            if (audio_size < 0) {
2527                 /* if error, just output silence */
2528                is->audio_buf      = is->silence_buf;
2529                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2530            } else {
2531                if (is->show_mode != SHOW_MODE_VIDEO)
2532                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2533                is->audio_buf_size = audio_size;
2534            }
2535            is->audio_buf_index = 0;
2536         }
2537         len1 = is->audio_buf_size - is->audio_buf_index;
2538         if (len1 > len)
2539             len1 = len;
2540         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2541         len -= len1;
2542         stream += len1;
2543         is->audio_buf_index += len1;
2544     }
2545     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2546     /* Let's assume the audio driver that is used by SDL has two periods. */
2547     if (!isnan(is->audio_clock)) {
2548         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);
2549         sync_clock_to_slave(&is->extclk, &is->audclk);
2550     }
2551 }
2552
2553 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2554 {
2555     SDL_AudioSpec wanted_spec, spec;
2556     const char *env;
2557     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2558     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2559     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2560
2561     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2562     if (env) {
2563         wanted_nb_channels = atoi(env);
2564         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2565     }
2566     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2567         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2568         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2569     }
2570     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2571     wanted_spec.channels = wanted_nb_channels;
2572     wanted_spec.freq = wanted_sample_rate;
2573     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2574         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2575         return -1;
2576     }
2577     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2578         next_sample_rate_idx--;
2579     wanted_spec.format = AUDIO_S16SYS;
2580     wanted_spec.silence = 0;
2581     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2582     wanted_spec.callback = sdl_audio_callback;
2583     wanted_spec.userdata = opaque;
2584     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2585         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2586                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2587         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2588         if (!wanted_spec.channels) {
2589             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2590             wanted_spec.channels = wanted_nb_channels;
2591             if (!wanted_spec.freq) {
2592                 av_log(NULL, AV_LOG_ERROR,
2593                        "No more combinations to try, audio open failed\n");
2594                 return -1;
2595             }
2596         }
2597         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2598     }
2599     if (spec.format != AUDIO_S16SYS) {
2600         av_log(NULL, AV_LOG_ERROR,
2601                "SDL advised audio format %d is not supported!\n", spec.format);
2602         return -1;
2603     }
2604     if (spec.channels != wanted_spec.channels) {
2605         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2606         if (!wanted_channel_layout) {
2607             av_log(NULL, AV_LOG_ERROR,
2608                    "SDL advised channel count %d is not supported!\n", spec.channels);
2609             return -1;
2610         }
2611     }
2612
2613     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2614     audio_hw_params->freq = spec.freq;
2615     audio_hw_params->channel_layout = wanted_channel_layout;
2616     audio_hw_params->channels =  spec.channels;
2617     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2618     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);
2619     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2620         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2621         return -1;
2622     }
2623     return spec.size;
2624 }
2625
2626 /* open a given stream. Return 0 if OK */
2627 static int stream_component_open(VideoState *is, int stream_index)
2628 {
2629     AVFormatContext *ic = is->ic;
2630     AVCodecContext *avctx;
2631     AVCodec *codec;
2632     const char *forced_codec_name = NULL;
2633     AVDictionary *opts;
2634     AVDictionaryEntry *t = NULL;
2635     int sample_rate, nb_channels;
2636     int64_t channel_layout;
2637     int ret = 0;
2638     int stream_lowres = lowres;
2639
2640     if (stream_index < 0 || stream_index >= ic->nb_streams)
2641         return -1;
2642     avctx = ic->streams[stream_index]->codec;
2643
2644     codec = avcodec_find_decoder(avctx->codec_id);
2645
2646     switch(avctx->codec_type){
2647         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2648         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2649         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2650     }
2651     if (forced_codec_name)
2652         codec = avcodec_find_decoder_by_name(forced_codec_name);
2653     if (!codec) {
2654         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2655                                       "No codec could be found with name '%s'\n", forced_codec_name);
2656         else                   av_log(NULL, AV_LOG_WARNING,
2657                                       "No codec could be found with id %d\n", avctx->codec_id);
2658         return -1;
2659     }
2660
2661     avctx->codec_id = codec->id;
2662     if(stream_lowres > av_codec_get_max_lowres(codec)){
2663         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2664                 av_codec_get_max_lowres(codec));
2665         stream_lowres = av_codec_get_max_lowres(codec);
2666     }
2667     av_codec_set_lowres(avctx, stream_lowres);
2668
2669     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2670     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2671     if(codec->capabilities & CODEC_CAP_DR1)
2672         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2673
2674     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2675     if (!av_dict_get(opts, "threads", NULL, 0))
2676         av_dict_set(&opts, "threads", "auto", 0);
2677     if (stream_lowres)
2678         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2679     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2680         av_dict_set(&opts, "refcounted_frames", "1", 0);
2681     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2682         goto fail;
2683     }
2684     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2685         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2686         ret =  AVERROR_OPTION_NOT_FOUND;
2687         goto fail;
2688     }
2689
2690     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2691     switch (avctx->codec_type) {
2692     case AVMEDIA_TYPE_AUDIO:
2693 #if CONFIG_AVFILTER
2694         {
2695             AVFilterLink *link;
2696
2697             is->audio_filter_src.freq           = avctx->sample_rate;
2698             is->audio_filter_src.channels       = avctx->channels;
2699             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2700             is->audio_filter_src.fmt            = avctx->sample_fmt;
2701             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2702                 goto fail;
2703             link = is->out_audio_filter->inputs[0];
2704             sample_rate    = link->sample_rate;
2705             nb_channels    = link->channels;
2706             channel_layout = link->channel_layout;
2707         }
2708 #else
2709         sample_rate    = avctx->sample_rate;
2710         nb_channels    = avctx->channels;
2711         channel_layout = avctx->channel_layout;
2712 #endif
2713
2714         /* prepare audio output */
2715         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2716             goto fail;
2717         is->audio_hw_buf_size = ret;
2718         is->audio_src = is->audio_tgt;
2719         is->audio_buf_size  = 0;
2720         is->audio_buf_index = 0;
2721
2722         /* init averaging filter */
2723         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2724         is->audio_diff_avg_count = 0;
2725         /* since we do not have a precise anough audio fifo fullness,
2726            we correct audio sync only if larger than this threshold */
2727         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2728
2729         is->audio_stream = stream_index;
2730         is->audio_st = ic->streams[stream_index];
2731
2732         packet_queue_start(&is->audioq);
2733         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2734         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2735             is->auddec.start_pts = is->audio_st->start_time;
2736             is->auddec.start_pts_tb = is->audio_st->time_base;
2737         }
2738         is->audio_tid = SDL_CreateThread(audio_thread, is);
2739         SDL_PauseAudio(0);
2740         break;
2741     case AVMEDIA_TYPE_VIDEO:
2742         is->video_stream = stream_index;
2743         is->video_st = ic->streams[stream_index];
2744
2745         packet_queue_start(&is->videoq);
2746         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2747         is->video_tid = SDL_CreateThread(video_thread, is);
2748         is->queue_attachments_req = 1;
2749         break;
2750     case AVMEDIA_TYPE_SUBTITLE:
2751         is->subtitle_stream = stream_index;
2752         is->subtitle_st = ic->streams[stream_index];
2753
2754         packet_queue_start(&is->subtitleq);
2755         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2756         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2757         break;
2758     default:
2759         break;
2760     }
2761
2762 fail:
2763     av_dict_free(&opts);
2764
2765     return ret;
2766 }
2767
2768 static void stream_component_close(VideoState *is, int stream_index)
2769 {
2770     AVFormatContext *ic = is->ic;
2771     AVCodecContext *avctx;
2772
2773     if (stream_index < 0 || stream_index >= ic->nb_streams)
2774         return;
2775     avctx = ic->streams[stream_index]->codec;
2776
2777     switch (avctx->codec_type) {
2778     case AVMEDIA_TYPE_AUDIO:
2779         packet_queue_abort(&is->audioq);
2780         frame_queue_signal(&is->sampq);
2781         SDL_CloseAudio();
2782         SDL_WaitThread(is->audio_tid, NULL);
2783
2784         decoder_destroy(&is->auddec);
2785         packet_queue_flush(&is->audioq);
2786         swr_free(&is->swr_ctx);
2787         av_freep(&is->audio_buf1);
2788         is->audio_buf1_size = 0;
2789         is->audio_buf = NULL;
2790
2791         if (is->rdft) {
2792             av_rdft_end(is->rdft);
2793             av_freep(&is->rdft_data);
2794             is->rdft = NULL;
2795             is->rdft_bits = 0;
2796         }
2797         break;
2798     case AVMEDIA_TYPE_VIDEO:
2799         packet_queue_abort(&is->videoq);
2800
2801         /* note: we also signal this mutex to make sure we deblock the
2802            video thread in all cases */
2803         frame_queue_signal(&is->pictq);
2804
2805         SDL_WaitThread(is->video_tid, NULL);
2806
2807         decoder_destroy(&is->viddec);
2808         packet_queue_flush(&is->videoq);
2809         break;
2810     case AVMEDIA_TYPE_SUBTITLE:
2811         packet_queue_abort(&is->subtitleq);
2812
2813         /* note: we also signal this mutex to make sure we deblock the
2814            video thread in all cases */
2815         frame_queue_signal(&is->subpq);
2816
2817         SDL_WaitThread(is->subtitle_tid, NULL);
2818
2819         decoder_destroy(&is->subdec);
2820         packet_queue_flush(&is->subtitleq);
2821         break;
2822     default:
2823         break;
2824     }
2825
2826     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2827     avcodec_close(avctx);
2828     switch (avctx->codec_type) {
2829     case AVMEDIA_TYPE_AUDIO:
2830         is->audio_st = NULL;
2831         is->audio_stream = -1;
2832         break;
2833     case AVMEDIA_TYPE_VIDEO:
2834         is->video_st = NULL;
2835         is->video_stream = -1;
2836         break;
2837     case AVMEDIA_TYPE_SUBTITLE:
2838         is->subtitle_st = NULL;
2839         is->subtitle_stream = -1;
2840         break;
2841     default:
2842         break;
2843     }
2844 }
2845
2846 static int decode_interrupt_cb(void *ctx)
2847 {
2848     VideoState *is = ctx;
2849     return is->abort_request;
2850 }
2851
2852 static int is_realtime(AVFormatContext *s)
2853 {
2854     if(   !strcmp(s->iformat->name, "rtp")
2855        || !strcmp(s->iformat->name, "rtsp")
2856        || !strcmp(s->iformat->name, "sdp")
2857     )
2858         return 1;
2859
2860     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2861                  || !strncmp(s->filename, "udp:", 4)
2862                 )
2863     )
2864         return 1;
2865     return 0;
2866 }
2867
2868 /* this thread gets the stream from the disk or the network */
2869 static int read_thread(void *arg)
2870 {
2871     VideoState *is = arg;
2872     AVFormatContext *ic = NULL;
2873     int err, i, ret;
2874     int st_index[AVMEDIA_TYPE_NB];
2875     AVPacket pkt1, *pkt = &pkt1;
2876     int eof = 0;
2877     int64_t stream_start_time;
2878     int pkt_in_play_range = 0;
2879     AVDictionaryEntry *t;
2880     AVDictionary **opts;
2881     int orig_nb_streams;
2882     SDL_mutex *wait_mutex = SDL_CreateMutex();
2883     int scan_all_pmts_set = 0;
2884     int64_t pkt_ts;
2885
2886     memset(st_index, -1, sizeof(st_index));
2887     is->last_video_stream = is->video_stream = -1;
2888     is->last_audio_stream = is->audio_stream = -1;
2889     is->last_subtitle_stream = is->subtitle_stream = -1;
2890
2891     ic = avformat_alloc_context();
2892     ic->interrupt_callback.callback = decode_interrupt_cb;
2893     ic->interrupt_callback.opaque = is;
2894     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2895         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2896         scan_all_pmts_set = 1;
2897     }
2898     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2899     if (err < 0) {
2900         print_error(is->filename, err);
2901         ret = -1;
2902         goto fail;
2903     }
2904     if (scan_all_pmts_set)
2905         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2906
2907     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2908         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2909         ret = AVERROR_OPTION_NOT_FOUND;
2910         goto fail;
2911     }
2912     is->ic = ic;
2913
2914     if (genpts)
2915         ic->flags |= AVFMT_FLAG_GENPTS;
2916
2917     av_format_inject_global_side_data(ic);
2918
2919     opts = setup_find_stream_info_opts(ic, codec_opts);
2920     orig_nb_streams = ic->nb_streams;
2921
2922     err = avformat_find_stream_info(ic, opts);
2923
2924     for (i = 0; i < orig_nb_streams; i++)
2925         av_dict_free(&opts[i]);
2926     av_freep(&opts);
2927
2928     if (err < 0) {
2929         av_log(NULL, AV_LOG_WARNING,
2930                "%s: could not find codec parameters\n", is->filename);
2931         ret = -1;
2932         goto fail;
2933     }
2934
2935     if (ic->pb)
2936         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2937
2938     if (seek_by_bytes < 0)
2939         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2940
2941     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2942
2943     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2944         window_title = av_asprintf("%s - %s", t->value, input_filename);
2945
2946     /* if seeking requested, we execute it */
2947     if (start_time != AV_NOPTS_VALUE) {
2948         int64_t timestamp;
2949
2950         timestamp = start_time;
2951         /* add the stream start time */
2952         if (ic->start_time != AV_NOPTS_VALUE)
2953             timestamp += ic->start_time;
2954         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2955         if (ret < 0) {
2956             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2957                     is->filename, (double)timestamp / AV_TIME_BASE);
2958         }
2959     }
2960
2961     is->realtime = is_realtime(ic);
2962
2963     if (show_status)
2964         av_dump_format(ic, 0, is->filename, 0);
2965
2966     for (i = 0; i < ic->nb_streams; i++) {
2967         AVStream *st = ic->streams[i];
2968         enum AVMediaType type = st->codec->codec_type;
2969         st->discard = AVDISCARD_ALL;
2970         if (wanted_stream_spec[type] && st_index[type] == -1)
2971             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2972                 st_index[type] = i;
2973     }
2974     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2975         if (wanted_stream_spec[i] && st_index[i] == -1) {
2976             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));
2977             st_index[i] = INT_MAX;
2978         }
2979     }
2980
2981     if (!video_disable)
2982         st_index[AVMEDIA_TYPE_VIDEO] =
2983             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2984                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2985     if (!audio_disable)
2986         st_index[AVMEDIA_TYPE_AUDIO] =
2987             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2988                                 st_index[AVMEDIA_TYPE_AUDIO],
2989                                 st_index[AVMEDIA_TYPE_VIDEO],
2990                                 NULL, 0);
2991     if (!video_disable && !subtitle_disable)
2992         st_index[AVMEDIA_TYPE_SUBTITLE] =
2993             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2994                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2995                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2996                                  st_index[AVMEDIA_TYPE_AUDIO] :
2997                                  st_index[AVMEDIA_TYPE_VIDEO]),
2998                                 NULL, 0);
2999
3000     is->show_mode = show_mode;
3001     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
3002         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
3003         AVCodecContext *avctx = st->codec;
3004         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
3005         if (avctx->width)
3006             set_default_window_size(avctx->width, avctx->height, sar);
3007     }
3008
3009     /* open the streams */
3010     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
3011         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
3012     }
3013
3014     ret = -1;
3015     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
3016         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
3017     }
3018     if (is->show_mode == SHOW_MODE_NONE)
3019         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
3020
3021     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
3022         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
3023     }
3024
3025     if (is->video_stream < 0 && is->audio_stream < 0) {
3026         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
3027                is->filename);
3028         ret = -1;
3029         goto fail;
3030     }
3031
3032     if (infinite_buffer < 0 && is->realtime)
3033         infinite_buffer = 1;
3034
3035     for (;;) {
3036         if (is->abort_request)
3037             break;
3038         if (is->paused != is->last_paused) {
3039             is->last_paused = is->paused;
3040             if (is->paused)
3041                 is->read_pause_return = av_read_pause(ic);
3042             else
3043                 av_read_play(ic);
3044         }
3045 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
3046         if (is->paused &&
3047                 (!strcmp(ic->iformat->name, "rtsp") ||
3048                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
3049             /* wait 10 ms to avoid trying to get another packet */
3050             /* XXX: horrible */
3051             SDL_Delay(10);
3052             continue;
3053         }
3054 #endif
3055         if (is->seek_req) {
3056             int64_t seek_target = is->seek_pos;
3057             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
3058             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
3059 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
3060 //      of the seek_pos/seek_rel variables
3061
3062             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
3063             if (ret < 0) {
3064                 av_log(NULL, AV_LOG_ERROR,
3065                        "%s: error while seeking\n", is->ic->filename);
3066             } else {
3067                 if (is->audio_stream >= 0) {
3068                     packet_queue_flush(&is->audioq);
3069                     packet_queue_put(&is->audioq, &flush_pkt);
3070                 }
3071                 if (is->subtitle_stream >= 0) {
3072                     packet_queue_flush(&is->subtitleq);
3073                     packet_queue_put(&is->subtitleq, &flush_pkt);
3074                 }
3075                 if (is->video_stream >= 0) {
3076                     packet_queue_flush(&is->videoq);
3077                     packet_queue_put(&is->videoq, &flush_pkt);
3078                 }
3079                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
3080                    set_clock(&is->extclk, NAN, 0);
3081                 } else {
3082                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
3083                 }
3084             }
3085             is->seek_req = 0;
3086             is->queue_attachments_req = 1;
3087             eof = 0;
3088             if (is->paused)
3089                 step_to_next_frame(is);
3090         }
3091         if (is->queue_attachments_req) {
3092             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
3093                 AVPacket copy;
3094                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
3095                     goto fail;
3096                 packet_queue_put(&is->videoq, &copy);
3097                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3098             }
3099             is->queue_attachments_req = 0;
3100         }
3101
3102         /* if the queue are full, no need to read more */
3103         if (infinite_buffer<1 &&
3104               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3105             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
3106                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
3107                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3108                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
3109             /* wait 10 ms */
3110             SDL_LockMutex(wait_mutex);
3111             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3112             SDL_UnlockMutex(wait_mutex);
3113             continue;
3114         }
3115         if (!is->paused &&
3116             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3117             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3118             if (loop != 1 && (!loop || --loop)) {
3119                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3120             } else if (autoexit) {
3121                 ret = AVERROR_EOF;
3122                 goto fail;
3123             }
3124         }
3125         ret = av_read_frame(ic, pkt);
3126         if (ret < 0) {
3127             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !eof) {
3128                 if (is->video_stream >= 0)
3129                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3130                 if (is->audio_stream >= 0)
3131                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3132                 if (is->subtitle_stream >= 0)
3133                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3134                 eof = 1;
3135             }
3136             if (ic->pb && ic->pb->error)
3137                 break;
3138             SDL_LockMutex(wait_mutex);
3139             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3140             SDL_UnlockMutex(wait_mutex);
3141             continue;
3142         } else {
3143             eof = 0;
3144         }
3145         /* check if packet is in play range specified by user, then queue, otherwise discard */
3146         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3147         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3148         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3149                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3150                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3151                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3152                 <= ((double)duration / 1000000);
3153         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3154             packet_queue_put(&is->audioq, pkt);
3155         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3156                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3157             packet_queue_put(&is->videoq, pkt);
3158         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3159             packet_queue_put(&is->subtitleq, pkt);
3160         } else {
3161             av_free_packet(pkt);
3162         }
3163     }
3164     /* wait until the end */
3165     while (!is->abort_request) {
3166         SDL_Delay(100);
3167     }
3168
3169     ret = 0;
3170  fail:
3171     /* close each stream */
3172     if (is->audio_stream >= 0)
3173         stream_component_close(is, is->audio_stream);
3174     if (is->video_stream >= 0)
3175         stream_component_close(is, is->video_stream);
3176     if (is->subtitle_stream >= 0)
3177         stream_component_close(is, is->subtitle_stream);
3178     if (ic) {
3179         avformat_close_input(&ic);
3180         is->ic = NULL;
3181     }
3182
3183     if (ret != 0) {
3184         SDL_Event event;
3185
3186         event.type = FF_QUIT_EVENT;
3187         event.user.data1 = is;
3188         SDL_PushEvent(&event);
3189     }
3190     SDL_DestroyMutex(wait_mutex);
3191     return 0;
3192 }
3193
3194 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3195 {
3196     VideoState *is;
3197
3198     is = av_mallocz(sizeof(VideoState));
3199     if (!is)
3200         return NULL;
3201     av_strlcpy(is->filename, filename, sizeof(is->filename));
3202     is->iformat = iformat;
3203     is->ytop    = 0;
3204     is->xleft   = 0;
3205
3206     /* start video display */
3207     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3208         goto fail;
3209     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3210         goto fail;
3211     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3212         goto fail;
3213
3214     packet_queue_init(&is->videoq);
3215     packet_queue_init(&is->audioq);
3216     packet_queue_init(&is->subtitleq);
3217
3218     is->continue_read_thread = SDL_CreateCond();
3219
3220     init_clock(&is->vidclk, &is->videoq.serial);
3221     init_clock(&is->audclk, &is->audioq.serial);
3222     init_clock(&is->extclk, &is->extclk.serial);
3223     is->audio_clock_serial = -1;
3224     is->av_sync_type = av_sync_type;
3225     is->read_tid     = SDL_CreateThread(read_thread, is);
3226     if (!is->read_tid) {
3227 fail:
3228         stream_close(is);
3229         return NULL;
3230     }
3231     return is;
3232 }
3233
3234 static void stream_cycle_channel(VideoState *is, int codec_type)
3235 {
3236     AVFormatContext *ic = is->ic;
3237     int start_index, stream_index;
3238     int old_index;
3239     AVStream *st;
3240     AVProgram *p = NULL;
3241     int nb_streams = is->ic->nb_streams;
3242
3243     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3244         start_index = is->last_video_stream;
3245         old_index = is->video_stream;
3246     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3247         start_index = is->last_audio_stream;
3248         old_index = is->audio_stream;
3249     } else {
3250         start_index = is->last_subtitle_stream;
3251         old_index = is->subtitle_stream;
3252     }
3253     stream_index = start_index;
3254
3255     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3256         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3257         if (p) {
3258             nb_streams = p->nb_stream_indexes;
3259             for (start_index = 0; start_index < nb_streams; start_index++)
3260                 if (p->stream_index[start_index] == stream_index)
3261                     break;
3262             if (start_index == nb_streams)
3263                 start_index = -1;
3264             stream_index = start_index;
3265         }
3266     }
3267
3268     for (;;) {
3269         if (++stream_index >= nb_streams)
3270         {
3271             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3272             {
3273                 stream_index = -1;
3274                 is->last_subtitle_stream = -1;
3275                 goto the_end;
3276             }
3277             if (start_index == -1)
3278                 return;
3279             stream_index = 0;
3280         }
3281         if (stream_index == start_index)
3282             return;
3283         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3284         if (st->codec->codec_type == codec_type) {
3285             /* check that parameters are OK */
3286             switch (codec_type) {
3287             case AVMEDIA_TYPE_AUDIO:
3288                 if (st->codec->sample_rate != 0 &&
3289                     st->codec->channels != 0)
3290                     goto the_end;
3291                 break;
3292             case AVMEDIA_TYPE_VIDEO:
3293             case AVMEDIA_TYPE_SUBTITLE:
3294                 goto the_end;
3295             default:
3296                 break;
3297             }
3298         }
3299     }
3300  the_end:
3301     if (p && stream_index != -1)
3302         stream_index = p->stream_index[stream_index];
3303     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3304            av_get_media_type_string(codec_type),
3305            old_index,
3306            stream_index);
3307
3308     stream_component_close(is, old_index);
3309     stream_component_open(is, stream_index);
3310 }
3311
3312
3313 static void toggle_full_screen(VideoState *is)
3314 {
3315 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3316     /* OS X needs to reallocate the SDL overlays */
3317     int i;
3318     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3319         is->pictq.queue[i].reallocate = 1;
3320 #endif
3321     is_full_screen = !is_full_screen;
3322     video_open(is, 1, NULL);
3323 }
3324
3325 static void toggle_audio_display(VideoState *is)
3326 {
3327     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3328     int next = is->show_mode;
3329     do {
3330         next = (next + 1) % SHOW_MODE_NB;
3331     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3332     if (is->show_mode != next) {
3333         fill_rectangle(screen,
3334                     is->xleft, is->ytop, is->width, is->height,
3335                     bgcolor, 1);
3336         is->force_refresh = 1;
3337         is->show_mode = next;
3338     }
3339 }
3340
3341 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3342     double remaining_time = 0.0;
3343     SDL_PumpEvents();
3344     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3345         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3346             SDL_ShowCursor(0);
3347             cursor_hidden = 1;
3348         }
3349         if (remaining_time > 0.0)
3350             av_usleep((int64_t)(remaining_time * 1000000.0));
3351         remaining_time = REFRESH_RATE;
3352         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3353             video_refresh(is, &remaining_time);
3354         SDL_PumpEvents();
3355     }
3356 }
3357
3358 static void seek_chapter(VideoState *is, int incr)
3359 {
3360     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3361     int i;
3362
3363     if (!is->ic->nb_chapters)
3364         return;
3365
3366     /* find the current chapter */
3367     for (i = 0; i < is->ic->nb_chapters; i++) {
3368         AVChapter *ch = is->ic->chapters[i];
3369         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3370             i--;
3371             break;
3372         }
3373     }
3374
3375     i += incr;
3376     i = FFMAX(i, 0);
3377     if (i >= is->ic->nb_chapters)
3378         return;
3379
3380     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3381     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3382                                  AV_TIME_BASE_Q), 0, 0);
3383 }
3384
3385 /* handle an event sent by the GUI */
3386 static void event_loop(VideoState *cur_stream)
3387 {
3388     SDL_Event event;
3389     double incr, pos, frac;
3390
3391     for (;;) {
3392         double x;
3393         refresh_loop_wait_event(cur_stream, &event);
3394         switch (event.type) {
3395         case SDL_KEYDOWN:
3396             if (exit_on_keydown) {
3397                 do_exit(cur_stream);
3398                 break;
3399             }
3400             switch (event.key.keysym.sym) {
3401             case SDLK_ESCAPE:
3402             case SDLK_q:
3403                 do_exit(cur_stream);
3404                 break;
3405             case SDLK_f:
3406                 toggle_full_screen(cur_stream);
3407                 cur_stream->force_refresh = 1;
3408                 break;
3409             case SDLK_p:
3410             case SDLK_SPACE:
3411                 toggle_pause(cur_stream);
3412                 break;
3413             case SDLK_s: // S: Step to next frame
3414                 step_to_next_frame(cur_stream);
3415                 break;
3416             case SDLK_a:
3417                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3418                 break;
3419             case SDLK_v:
3420                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3421                 break;
3422             case SDLK_c:
3423                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3424                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3425                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3426                 break;
3427             case SDLK_t:
3428                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3429                 break;
3430             case SDLK_w:
3431 #if CONFIG_AVFILTER
3432                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3433                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3434                         cur_stream->vfilter_idx = 0;
3435                 } else {
3436                     cur_stream->vfilter_idx = 0;
3437                     toggle_audio_display(cur_stream);
3438                 }
3439 #else
3440                 toggle_audio_display(cur_stream);
3441 #endif
3442                 break;
3443             case SDLK_PAGEUP:
3444                 if (cur_stream->ic->nb_chapters <= 1) {
3445                     incr = 600.0;
3446                     goto do_seek;
3447                 }
3448                 seek_chapter(cur_stream, 1);
3449                 break;
3450             case SDLK_PAGEDOWN:
3451                 if (cur_stream->ic->nb_chapters <= 1) {
3452                     incr = -600.0;
3453                     goto do_seek;
3454                 }
3455                 seek_chapter(cur_stream, -1);
3456                 break;
3457             case SDLK_LEFT:
3458                 incr = -10.0;
3459                 goto do_seek;
3460             case SDLK_RIGHT:
3461                 incr = 10.0;
3462                 goto do_seek;
3463             case SDLK_UP:
3464                 incr = 60.0;
3465                 goto do_seek;
3466             case SDLK_DOWN:
3467                 incr = -60.0;
3468             do_seek:
3469                     if (seek_by_bytes) {
3470                         pos = -1;
3471                         if (pos < 0 && cur_stream->video_stream >= 0)
3472                             pos = frame_queue_last_pos(&cur_stream->pictq);
3473                         if (pos < 0 && cur_stream->audio_stream >= 0)
3474                             pos = frame_queue_last_pos(&cur_stream->sampq);
3475                         if (pos < 0)
3476                             pos = avio_tell(cur_stream->ic->pb);
3477                         if (cur_stream->ic->bit_rate)
3478                             incr *= cur_stream->ic->bit_rate / 8.0;
3479                         else
3480                             incr *= 180000.0;
3481                         pos += incr;
3482                         stream_seek(cur_stream, pos, incr, 1);
3483                     } else {
3484                         pos = get_master_clock(cur_stream);
3485                         if (isnan(pos))
3486                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3487                         pos += incr;
3488                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3489                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3490                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3491                     }
3492                 break;
3493             default:
3494                 break;
3495             }
3496             break;
3497         case SDL_VIDEOEXPOSE:
3498             cur_stream->force_refresh = 1;
3499             break;
3500         case SDL_MOUSEBUTTONDOWN:
3501             if (exit_on_mousedown) {
3502                 do_exit(cur_stream);
3503                 break;
3504             }
3505         case SDL_MOUSEMOTION:
3506             if (cursor_hidden) {
3507                 SDL_ShowCursor(1);
3508                 cursor_hidden = 0;
3509             }
3510             cursor_last_shown = av_gettime_relative();
3511             if (event.type == SDL_MOUSEBUTTONDOWN) {
3512                 x = event.button.x;
3513             } else {
3514                 if (event.motion.state != SDL_PRESSED)
3515                     break;
3516                 x = event.motion.x;
3517             }
3518                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3519                     uint64_t size =  avio_size(cur_stream->ic->pb);
3520                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3521                 } else {
3522                     int64_t ts;
3523                     int ns, hh, mm, ss;
3524                     int tns, thh, tmm, tss;
3525                     tns  = cur_stream->ic->duration / 1000000LL;
3526                     thh  = tns / 3600;
3527                     tmm  = (tns % 3600) / 60;
3528                     tss  = (tns % 60);
3529                     frac = x / cur_stream->width;
3530                     ns   = frac * tns;
3531                     hh   = ns / 3600;
3532                     mm   = (ns % 3600) / 60;
3533                     ss   = (ns % 60);
3534                     av_log(NULL, AV_LOG_INFO,
3535                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3536                             hh, mm, ss, thh, tmm, tss);
3537                     ts = frac * cur_stream->ic->duration;
3538                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3539                         ts += cur_stream->ic->start_time;
3540                     stream_seek(cur_stream, ts, 0, 0);
3541                 }
3542             break;
3543         case SDL_VIDEORESIZE:
3544                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3545                                           SDL_HWSURFACE|(is_full_screen?SDL_FULLSCREEN:SDL_RESIZABLE)|SDL_ASYNCBLIT|SDL_HWACCEL);
3546                 if (!screen) {
3547                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3548                     do_exit(cur_stream);
3549                 }
3550                 screen_width  = cur_stream->width  = screen->w;
3551                 screen_height = cur_stream->height = screen->h;
3552                 cur_stream->force_refresh = 1;
3553             break;
3554         case SDL_QUIT:
3555         case FF_QUIT_EVENT:
3556             do_exit(cur_stream);
3557             break;
3558         case FF_ALLOC_EVENT:
3559             alloc_picture(event.user.data1);
3560             break;
3561         default:
3562             break;
3563         }
3564     }
3565 }
3566
3567 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3568 {
3569     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3570     return opt_default(NULL, "video_size", arg);
3571 }
3572
3573 static int opt_width(void *optctx, const char *opt, const char *arg)
3574 {
3575     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3576     return 0;
3577 }
3578
3579 static int opt_height(void *optctx, const char *opt, const char *arg)
3580 {
3581     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3582     return 0;
3583 }
3584
3585 static int opt_format(void *optctx, const char *opt, const char *arg)
3586 {
3587     file_iformat = av_find_input_format(arg);
3588     if (!file_iformat) {
3589         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3590         return AVERROR(EINVAL);
3591     }
3592     return 0;
3593 }
3594
3595 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3596 {
3597     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3598     return opt_default(NULL, "pixel_format", arg);
3599 }
3600
3601 static int opt_sync(void *optctx, const char *opt, const char *arg)
3602 {
3603     if (!strcmp(arg, "audio"))
3604         av_sync_type = AV_SYNC_AUDIO_MASTER;
3605     else if (!strcmp(arg, "video"))
3606         av_sync_type = AV_SYNC_VIDEO_MASTER;
3607     else if (!strcmp(arg, "ext"))
3608         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3609     else {
3610         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3611         exit(1);
3612     }
3613     return 0;
3614 }
3615
3616 static int opt_seek(void *optctx, const char *opt, const char *arg)
3617 {
3618     start_time = parse_time_or_die(opt, arg, 1);
3619     return 0;
3620 }
3621
3622 static int opt_duration(void *optctx, const char *opt, const char *arg)
3623 {
3624     duration = parse_time_or_die(opt, arg, 1);
3625     return 0;
3626 }
3627
3628 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3629 {
3630     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3631                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3632                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3633                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3634     return 0;
3635 }
3636
3637 static void opt_input_file(void *optctx, const char *filename)
3638 {
3639     if (input_filename) {
3640         av_log(NULL, AV_LOG_FATAL,
3641                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3642                 filename, input_filename);
3643         exit(1);
3644     }
3645     if (!strcmp(filename, "-"))
3646         filename = "pipe:";
3647     input_filename = filename;
3648 }
3649
3650 static int opt_codec(void *optctx, const char *opt, const char *arg)
3651 {
3652    const char *spec = strchr(opt, ':');
3653    if (!spec) {
3654        av_log(NULL, AV_LOG_ERROR,
3655               "No media specifier was specified in '%s' in option '%s'\n",
3656                arg, opt);
3657        return AVERROR(EINVAL);
3658    }
3659    spec++;
3660    switch (spec[0]) {
3661    case 'a' :    audio_codec_name = arg; break;
3662    case 's' : subtitle_codec_name = arg; break;
3663    case 'v' :    video_codec_name = arg; break;
3664    default:
3665        av_log(NULL, AV_LOG_ERROR,
3666               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3667        return AVERROR(EINVAL);
3668    }
3669    return 0;
3670 }
3671
3672 static int dummy;
3673
3674 static const OptionDef options[] = {
3675 #include "cmdutils_common_opts.h"
3676     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3677     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3678     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3679     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3680     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3681     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3682     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3683     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3684     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3685     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3686     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3687     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3688     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3689     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3690     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3691     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3692     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3693     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3694     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3695     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3696     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3697     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3698     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3699     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3700     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3701     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3702     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3703     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3704     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3705 #if CONFIG_AVFILTER
3706     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3707     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3708 #endif
3709     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3710     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3711     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3712     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3713     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3714     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3715     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3716     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3717     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3718     { NULL, },
3719 };
3720
3721 static void show_usage(void)
3722 {
3723     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3724     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3725     av_log(NULL, AV_LOG_INFO, "\n");
3726 }
3727
3728 void show_help_default(const char *opt, const char *arg)
3729 {
3730     av_log_set_callback(log_callback_help);
3731     show_usage();
3732     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3733     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3734     printf("