ffplay: remove unused field VideoState.dtg_active_format
[ffmpeg.git] / ffplay.c
1 /*
2  * FFplay : Simple Media Player based on the FFmpeg libraries
3  * Copyright (c) 2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #define _XOPEN_SOURCE 600
23
24 #include "config.h"
25 #include <inttypes.h>
26 #include <math.h>
27 #include <limits.h>
28 #include "libavutil/avstring.h"
29 #include "libavutil/colorspace.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/parseutils.h"
33 #include "libavutil/samplefmt.h"
34 #include "libavutil/avassert.h"
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavcodec/audioconvert.h"
39 #include "libavcodec/opt.h"
40 #include "libavcodec/avfft.h"
41
42 #if CONFIG_AVFILTER
43 # include "libavfilter/avfilter.h"
44 # include "libavfilter/avfiltergraph.h"
45 #endif
46
47 #include "cmdutils.h"
48
49 #include <SDL.h>
50 #include <SDL_thread.h>
51
52 #ifdef __MINGW32__
53 #undef main /* We don't want SDL to override our main() */
54 #endif
55
56 #include <unistd.h>
57 #include <assert.h>
58
59 const char program_name[] = "FFplay";
60 const int program_birth_year = 2003;
61
62 //#define DEBUG
63 //#define DEBUG_SYNC
64
65 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
66 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
67 #define MIN_FRAMES 5
68
69 /* SDL audio buffer size, in samples. Should be small to have precise
70    A/V sync as SDL does not have hardware buffer fullness info. */
71 #define SDL_AUDIO_BUFFER_SIZE 1024
72
73 /* no AV sync correction is done if below the AV sync threshold */
74 #define AV_SYNC_THRESHOLD 0.01
75 /* no AV correction is done if too big error */
76 #define AV_NOSYNC_THRESHOLD 10.0
77
78 #define FRAME_SKIP_FACTOR 0.05
79
80 /* maximum audio speed change to get correct sync */
81 #define SAMPLE_CORRECTION_PERCENT_MAX 10
82
83 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
84 #define AUDIO_DIFF_AVG_NB   20
85
86 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
87 #define SAMPLE_ARRAY_SIZE (2*65536)
88
89 static int sws_flags = SWS_BICUBIC;
90
91 typedef struct PacketQueue {
92     AVPacketList *first_pkt, *last_pkt;
93     int nb_packets;
94     int size;
95     int abort_request;
96     SDL_mutex *mutex;
97     SDL_cond *cond;
98 } PacketQueue;
99
100 #define VIDEO_PICTURE_QUEUE_SIZE 2
101 #define SUBPICTURE_QUEUE_SIZE 4
102
103 typedef struct VideoPicture {
104     double pts;                                  ///<presentation time stamp for this picture
105     double target_clock;                         ///<av_gettime() time at which this should be displayed ideally
106     int64_t pos;                                 ///<byte position in file
107     SDL_Overlay *bmp;
108     int width, height; /* source height & width */
109     int allocated;
110     enum PixelFormat pix_fmt;
111
112 #if CONFIG_AVFILTER
113     AVFilterBufferRef *picref;
114 #endif
115 } VideoPicture;
116
117 typedef struct SubPicture {
118     double pts; /* presentation time stamp for this picture */
119     AVSubtitle sub;
120 } SubPicture;
121
122 enum {
123     AV_SYNC_AUDIO_MASTER, /* default choice */
124     AV_SYNC_VIDEO_MASTER,
125     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
126 };
127
128 typedef struct VideoState {
129     SDL_Thread *parse_tid;
130     SDL_Thread *video_tid;
131     SDL_Thread *refresh_tid;
132     AVInputFormat *iformat;
133     int no_background;
134     int abort_request;
135     int paused;
136     int last_paused;
137     int seek_req;
138     int seek_flags;
139     int64_t seek_pos;
140     int64_t seek_rel;
141     int read_pause_return;
142     AVFormatContext *ic;
143
144     int audio_stream;
145
146     int av_sync_type;
147     double external_clock; /* external clock base */
148     int64_t external_clock_time;
149
150     double audio_clock;
151     double audio_diff_cum; /* used for AV difference average computation */
152     double audio_diff_avg_coef;
153     double audio_diff_threshold;
154     int audio_diff_avg_count;
155     AVStream *audio_st;
156     PacketQueue audioq;
157     int audio_hw_buf_size;
158     /* samples output by the codec. we reserve more space for avsync
159        compensation */
160     DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
161     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
162     uint8_t *audio_buf;
163     unsigned int audio_buf_size; /* in bytes */
164     int audio_buf_index; /* in bytes */
165     AVPacket audio_pkt_temp;
166     AVPacket audio_pkt;
167     enum AVSampleFormat audio_src_fmt;
168     AVAudioConvert *reformat_ctx;
169
170     int show_audio; /* if true, display audio samples */
171     int16_t sample_array[SAMPLE_ARRAY_SIZE];
172     int sample_array_index;
173     int last_i_start;
174     RDFTContext *rdft;
175     int rdft_bits;
176     FFTSample *rdft_data;
177     int xpos;
178
179     SDL_Thread *subtitle_tid;
180     int subtitle_stream;
181     int subtitle_stream_changed;
182     AVStream *subtitle_st;
183     PacketQueue subtitleq;
184     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
185     int subpq_size, subpq_rindex, subpq_windex;
186     SDL_mutex *subpq_mutex;
187     SDL_cond *subpq_cond;
188
189     double frame_timer;
190     double frame_last_pts;
191     double frame_last_delay;
192     double video_clock;                          ///<pts of last decoded frame / predicted pts of next decoded frame
193     int video_stream;
194     AVStream *video_st;
195     PacketQueue videoq;
196     double video_current_pts;                    ///<current displayed pts (different from video_clock if frame fifos are used)
197     double video_current_pts_drift;              ///<video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
198     int64_t video_current_pos;                   ///<current displayed file pos
199     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
200     int pictq_size, pictq_rindex, pictq_windex;
201     SDL_mutex *pictq_mutex;
202     SDL_cond *pictq_cond;
203 #if !CONFIG_AVFILTER
204     struct SwsContext *img_convert_ctx;
205 #endif
206
207     //    QETimer *video_timer;
208     char filename[1024];
209     int width, height, xleft, ytop;
210
211 #if CONFIG_AVFILTER
212     AVFilterContext *out_video_filter;          ///<the last filter in the video chain
213 #endif
214
215     float skip_frames;
216     float skip_frames_index;
217     int refresh;
218 } VideoState;
219
220 static void show_help(void);
221 static int audio_write_get_buf_size(VideoState *is);
222
223 /* options specified by the user */
224 static AVInputFormat *file_iformat;
225 static const char *input_filename;
226 static const char *window_title;
227 static int fs_screen_width;
228 static int fs_screen_height;
229 static int screen_width = 0;
230 static int screen_height = 0;
231 static int frame_width = 0;
232 static int frame_height = 0;
233 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
234 static int audio_disable;
235 static int video_disable;
236 static int wanted_stream[AVMEDIA_TYPE_NB]={
237     [AVMEDIA_TYPE_AUDIO]=-1,
238     [AVMEDIA_TYPE_VIDEO]=-1,
239     [AVMEDIA_TYPE_SUBTITLE]=-1,
240 };
241 static int seek_by_bytes=-1;
242 static int display_disable;
243 static int show_status = 1;
244 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
245 static int64_t start_time = AV_NOPTS_VALUE;
246 static int64_t duration = AV_NOPTS_VALUE;
247 static int debug = 0;
248 static int debug_mv = 0;
249 static int step = 0;
250 static int thread_count = 1;
251 static int workaround_bugs = 1;
252 static int fast = 0;
253 static int genpts = 0;
254 static int lowres = 0;
255 static int idct = FF_IDCT_AUTO;
256 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
257 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
258 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
259 static int error_recognition = FF_ER_CAREFUL;
260 static int error_concealment = 3;
261 static int decoder_reorder_pts= -1;
262 static int autoexit;
263 static int exit_on_keydown;
264 static int exit_on_mousedown;
265 static int loop=1;
266 static int framedrop=1;
267
268 static int rdftspeed=20;
269 #if CONFIG_AVFILTER
270 static char *vfilters = NULL;
271 #endif
272
273 /* current context */
274 static int is_full_screen;
275 static VideoState *cur_stream;
276 static int64_t audio_callback_time;
277
278 static AVPacket flush_pkt;
279
280 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
281 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
282 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
283
284 static SDL_Surface *screen;
285
286 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
287 {
288     AVPacketList *pkt1;
289
290     /* duplicate the packet */
291     if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
292         return -1;
293
294     pkt1 = av_malloc(sizeof(AVPacketList));
295     if (!pkt1)
296         return -1;
297     pkt1->pkt = *pkt;
298     pkt1->next = NULL;
299
300
301     SDL_LockMutex(q->mutex);
302
303     if (!q->last_pkt)
304
305         q->first_pkt = pkt1;
306     else
307         q->last_pkt->next = pkt1;
308     q->last_pkt = pkt1;
309     q->nb_packets++;
310     q->size += pkt1->pkt.size + sizeof(*pkt1);
311     /* XXX: should duplicate packet data in DV case */
312     SDL_CondSignal(q->cond);
313
314     SDL_UnlockMutex(q->mutex);
315     return 0;
316 }
317
318 /* packet queue handling */
319 static void packet_queue_init(PacketQueue *q)
320 {
321     memset(q, 0, sizeof(PacketQueue));
322     q->mutex = SDL_CreateMutex();
323     q->cond = SDL_CreateCond();
324     packet_queue_put(q, &flush_pkt);
325 }
326
327 static void packet_queue_flush(PacketQueue *q)
328 {
329     AVPacketList *pkt, *pkt1;
330
331     SDL_LockMutex(q->mutex);
332     for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
333         pkt1 = pkt->next;
334         av_free_packet(&pkt->pkt);
335         av_freep(&pkt);
336     }
337     q->last_pkt = NULL;
338     q->first_pkt = NULL;
339     q->nb_packets = 0;
340     q->size = 0;
341     SDL_UnlockMutex(q->mutex);
342 }
343
344 static void packet_queue_end(PacketQueue *q)
345 {
346     packet_queue_flush(q);
347     SDL_DestroyMutex(q->mutex);
348     SDL_DestroyCond(q->cond);
349 }
350
351 static void packet_queue_abort(PacketQueue *q)
352 {
353     SDL_LockMutex(q->mutex);
354
355     q->abort_request = 1;
356
357     SDL_CondSignal(q->cond);
358
359     SDL_UnlockMutex(q->mutex);
360 }
361
362 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
363 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
364 {
365     AVPacketList *pkt1;
366     int ret;
367
368     SDL_LockMutex(q->mutex);
369
370     for(;;) {
371         if (q->abort_request) {
372             ret = -1;
373             break;
374         }
375
376         pkt1 = q->first_pkt;
377         if (pkt1) {
378             q->first_pkt = pkt1->next;
379             if (!q->first_pkt)
380                 q->last_pkt = NULL;
381             q->nb_packets--;
382             q->size -= pkt1->pkt.size + sizeof(*pkt1);
383             *pkt = pkt1->pkt;
384             av_free(pkt1);
385             ret = 1;
386             break;
387         } else if (!block) {
388             ret = 0;
389             break;
390         } else {
391             SDL_CondWait(q->cond, q->mutex);
392         }
393     }
394     SDL_UnlockMutex(q->mutex);
395     return ret;
396 }
397
398 static inline void fill_rectangle(SDL_Surface *screen,
399                                   int x, int y, int w, int h, int color)
400 {
401     SDL_Rect rect;
402     rect.x = x;
403     rect.y = y;
404     rect.w = w;
405     rect.h = h;
406     SDL_FillRect(screen, &rect, color);
407 }
408
409 #if 0
410 /* draw only the border of a rectangle */
411 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
412 {
413     int w1, w2, h1, h2;
414
415     /* fill the background */
416     w1 = x;
417     if (w1 < 0)
418         w1 = 0;
419     w2 = s->width - (x + w);
420     if (w2 < 0)
421         w2 = 0;
422     h1 = y;
423     if (h1 < 0)
424         h1 = 0;
425     h2 = s->height - (y + h);
426     if (h2 < 0)
427         h2 = 0;
428     fill_rectangle(screen,
429                    s->xleft, s->ytop,
430                    w1, s->height,
431                    color);
432     fill_rectangle(screen,
433                    s->xleft + s->width - w2, s->ytop,
434                    w2, s->height,
435                    color);
436     fill_rectangle(screen,
437                    s->xleft + w1, s->ytop,
438                    s->width - w1 - w2, h1,
439                    color);
440     fill_rectangle(screen,
441                    s->xleft + w1, s->ytop + s->height - h2,
442                    s->width - w1 - w2, h2,
443                    color);
444 }
445 #endif
446
447 #define ALPHA_BLEND(a, oldp, newp, s)\
448 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
449
450 #define RGBA_IN(r, g, b, a, s)\
451 {\
452     unsigned int v = ((const uint32_t *)(s))[0];\
453     a = (v >> 24) & 0xff;\
454     r = (v >> 16) & 0xff;\
455     g = (v >> 8) & 0xff;\
456     b = v & 0xff;\
457 }
458
459 #define YUVA_IN(y, u, v, a, s, pal)\
460 {\
461     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
462     a = (val >> 24) & 0xff;\
463     y = (val >> 16) & 0xff;\
464     u = (val >> 8) & 0xff;\
465     v = val & 0xff;\
466 }
467
468 #define YUVA_OUT(d, y, u, v, a)\
469 {\
470     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
471 }
472
473
474 #define BPP 1
475
476 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
477 {
478     int wrap, wrap3, width2, skip2;
479     int y, u, v, a, u1, v1, a1, w, h;
480     uint8_t *lum, *cb, *cr;
481     const uint8_t *p;
482     const uint32_t *pal;
483     int dstx, dsty, dstw, dsth;
484
485     dstw = av_clip(rect->w, 0, imgw);
486     dsth = av_clip(rect->h, 0, imgh);
487     dstx = av_clip(rect->x, 0, imgw - dstw);
488     dsty = av_clip(rect->y, 0, imgh - dsth);
489     lum = dst->data[0] + dsty * dst->linesize[0];
490     cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
491     cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
492
493     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
494     skip2 = dstx >> 1;
495     wrap = dst->linesize[0];
496     wrap3 = rect->pict.linesize[0];
497     p = rect->pict.data[0];
498     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
499
500     if (dsty & 1) {
501         lum += dstx;
502         cb += skip2;
503         cr += skip2;
504
505         if (dstx & 1) {
506             YUVA_IN(y, u, v, a, p, pal);
507             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
508             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
509             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
510             cb++;
511             cr++;
512             lum++;
513             p += BPP;
514         }
515         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
516             YUVA_IN(y, u, v, a, p, pal);
517             u1 = u;
518             v1 = v;
519             a1 = a;
520             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
521
522             YUVA_IN(y, u, v, a, p + BPP, pal);
523             u1 += u;
524             v1 += v;
525             a1 += a;
526             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
527             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
528             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
529             cb++;
530             cr++;
531             p += 2 * BPP;
532             lum += 2;
533         }
534         if (w) {
535             YUVA_IN(y, u, v, a, p, pal);
536             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
537             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
538             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
539             p++;
540             lum++;
541         }
542         p += wrap3 - dstw * BPP;
543         lum += wrap - dstw - dstx;
544         cb += dst->linesize[1] - width2 - skip2;
545         cr += dst->linesize[2] - width2 - skip2;
546     }
547     for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
548         lum += dstx;
549         cb += skip2;
550         cr += skip2;
551
552         if (dstx & 1) {
553             YUVA_IN(y, u, v, a, p, pal);
554             u1 = u;
555             v1 = v;
556             a1 = a;
557             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
558             p += wrap3;
559             lum += wrap;
560             YUVA_IN(y, u, v, a, p, pal);
561             u1 += u;
562             v1 += v;
563             a1 += a;
564             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
565             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
566             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
567             cb++;
568             cr++;
569             p += -wrap3 + BPP;
570             lum += -wrap + 1;
571         }
572         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
573             YUVA_IN(y, u, v, a, p, pal);
574             u1 = u;
575             v1 = v;
576             a1 = a;
577             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
578
579             YUVA_IN(y, u, v, a, p + BPP, pal);
580             u1 += u;
581             v1 += v;
582             a1 += a;
583             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
584             p += wrap3;
585             lum += wrap;
586
587             YUVA_IN(y, u, v, a, p, pal);
588             u1 += u;
589             v1 += v;
590             a1 += a;
591             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
592
593             YUVA_IN(y, u, v, a, p + BPP, pal);
594             u1 += u;
595             v1 += v;
596             a1 += a;
597             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
598
599             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
600             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
601
602             cb++;
603             cr++;
604             p += -wrap3 + 2 * BPP;
605             lum += -wrap + 2;
606         }
607         if (w) {
608             YUVA_IN(y, u, v, a, p, pal);
609             u1 = u;
610             v1 = v;
611             a1 = a;
612             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
613             p += wrap3;
614             lum += wrap;
615             YUVA_IN(y, u, v, a, p, pal);
616             u1 += u;
617             v1 += v;
618             a1 += a;
619             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
620             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
621             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
622             cb++;
623             cr++;
624             p += -wrap3 + BPP;
625             lum += -wrap + 1;
626         }
627         p += wrap3 + (wrap3 - dstw * BPP);
628         lum += wrap + (wrap - dstw - dstx);
629         cb += dst->linesize[1] - width2 - skip2;
630         cr += dst->linesize[2] - width2 - skip2;
631     }
632     /* handle odd height */
633     if (h) {
634         lum += dstx;
635         cb += skip2;
636         cr += skip2;
637
638         if (dstx & 1) {
639             YUVA_IN(y, u, v, a, p, pal);
640             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
641             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
642             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
643             cb++;
644             cr++;
645             lum++;
646             p += BPP;
647         }
648         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
649             YUVA_IN(y, u, v, a, p, pal);
650             u1 = u;
651             v1 = v;
652             a1 = a;
653             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
654
655             YUVA_IN(y, u, v, a, p + BPP, pal);
656             u1 += u;
657             v1 += v;
658             a1 += a;
659             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
660             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
661             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
662             cb++;
663             cr++;
664             p += 2 * BPP;
665             lum += 2;
666         }
667         if (w) {
668             YUVA_IN(y, u, v, a, p, pal);
669             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
670             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
671             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
672         }
673     }
674 }
675
676 static void free_subpicture(SubPicture *sp)
677 {
678     avsubtitle_free(&sp->sub);
679 }
680
681 static void video_image_display(VideoState *is)
682 {
683     VideoPicture *vp;
684     SubPicture *sp;
685     AVPicture pict;
686     float aspect_ratio;
687     int width, height, x, y;
688     SDL_Rect rect;
689     int i;
690
691     vp = &is->pictq[is->pictq_rindex];
692     if (vp->bmp) {
693 #if CONFIG_AVFILTER
694          if (vp->picref->video->pixel_aspect.num == 0)
695              aspect_ratio = 0;
696          else
697              aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
698 #else
699
700         /* XXX: use variable in the frame */
701         if (is->video_st->sample_aspect_ratio.num)
702             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
703         else if (is->video_st->codec->sample_aspect_ratio.num)
704             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
705         else
706             aspect_ratio = 0;
707 #endif
708         if (aspect_ratio <= 0.0)
709             aspect_ratio = 1.0;
710         aspect_ratio *= (float)vp->width / (float)vp->height;
711
712         if (is->subtitle_st) {
713             if (is->subpq_size > 0) {
714                 sp = &is->subpq[is->subpq_rindex];
715
716                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
717                     SDL_LockYUVOverlay (vp->bmp);
718
719                     pict.data[0] = vp->bmp->pixels[0];
720                     pict.data[1] = vp->bmp->pixels[2];
721                     pict.data[2] = vp->bmp->pixels[1];
722
723                     pict.linesize[0] = vp->bmp->pitches[0];
724                     pict.linesize[1] = vp->bmp->pitches[2];
725                     pict.linesize[2] = vp->bmp->pitches[1];
726
727                     for (i = 0; i < sp->sub.num_rects; i++)
728                         blend_subrect(&pict, sp->sub.rects[i],
729                                       vp->bmp->w, vp->bmp->h);
730
731                     SDL_UnlockYUVOverlay (vp->bmp);
732                 }
733             }
734         }
735
736
737         /* XXX: we suppose the screen has a 1.0 pixel ratio */
738         height = is->height;
739         width = ((int)rint(height * aspect_ratio)) & ~1;
740         if (width > is->width) {
741             width = is->width;
742             height = ((int)rint(width / aspect_ratio)) & ~1;
743         }
744         x = (is->width - width) / 2;
745         y = (is->height - height) / 2;
746         if (!is->no_background) {
747             /* fill the background */
748             //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
749         } else {
750             is->no_background = 0;
751         }
752         rect.x = is->xleft + x;
753         rect.y = is->ytop  + y;
754         rect.w = width;
755         rect.h = height;
756         SDL_DisplayYUVOverlay(vp->bmp, &rect);
757     } else {
758 #if 0
759         fill_rectangle(screen,
760                        is->xleft, is->ytop, is->width, is->height,
761                        QERGB(0x00, 0x00, 0x00));
762 #endif
763     }
764 }
765
766 static inline int compute_mod(int a, int b)
767 {
768     return a < 0 ? a%b + b : a%b;
769 }
770
771 static void video_audio_display(VideoState *s)
772 {
773     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
774     int ch, channels, h, h2, bgcolor, fgcolor;
775     int16_t time_diff;
776     int rdft_bits, nb_freq;
777
778     for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
779         ;
780     nb_freq= 1<<(rdft_bits-1);
781
782     /* compute display index : center on currently output samples */
783     channels = s->audio_st->codec->channels;
784     nb_display_channels = channels;
785     if (!s->paused) {
786         int data_used= s->show_audio==1 ? s->width : (2*nb_freq);
787         n = 2 * channels;
788         delay = audio_write_get_buf_size(s);
789         delay /= n;
790
791         /* to be more precise, we take into account the time spent since
792            the last buffer computation */
793         if (audio_callback_time) {
794             time_diff = av_gettime() - audio_callback_time;
795             delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
796         }
797
798         delay += 2*data_used;
799         if (delay < data_used)
800             delay = data_used;
801
802         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
803         if(s->show_audio==1){
804             h= INT_MIN;
805             for(i=0; i<1000; i+=channels){
806                 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
807                 int a= s->sample_array[idx];
808                 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
809                 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
810                 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
811                 int score= a-d;
812                 if(h<score && (b^c)<0){
813                     h= score;
814                     i_start= idx;
815                 }
816             }
817         }
818
819         s->last_i_start = i_start;
820     } else {
821         i_start = s->last_i_start;
822     }
823
824     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
825     if(s->show_audio==1){
826         fill_rectangle(screen,
827                        s->xleft, s->ytop, s->width, s->height,
828                        bgcolor);
829
830         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
831
832         /* total height for one channel */
833         h = s->height / nb_display_channels;
834         /* graph height / 2 */
835         h2 = (h * 9) / 20;
836         for(ch = 0;ch < nb_display_channels; ch++) {
837             i = i_start + ch;
838             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
839             for(x = 0; x < s->width; x++) {
840                 y = (s->sample_array[i] * h2) >> 15;
841                 if (y < 0) {
842                     y = -y;
843                     ys = y1 - y;
844                 } else {
845                     ys = y1;
846                 }
847                 fill_rectangle(screen,
848                                s->xleft + x, ys, 1, y,
849                                fgcolor);
850                 i += channels;
851                 if (i >= SAMPLE_ARRAY_SIZE)
852                     i -= SAMPLE_ARRAY_SIZE;
853             }
854         }
855
856         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
857
858         for(ch = 1;ch < nb_display_channels; ch++) {
859             y = s->ytop + ch * h;
860             fill_rectangle(screen,
861                            s->xleft, y, s->width, 1,
862                            fgcolor);
863         }
864         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
865     }else{
866         nb_display_channels= FFMIN(nb_display_channels, 2);
867         if(rdft_bits != s->rdft_bits){
868             av_rdft_end(s->rdft);
869             av_free(s->rdft_data);
870             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
871             s->rdft_bits= rdft_bits;
872             s->rdft_data= av_malloc(4*nb_freq*sizeof(*s->rdft_data));
873         }
874         {
875             FFTSample *data[2];
876             for(ch = 0;ch < nb_display_channels; ch++) {
877                 data[ch] = s->rdft_data + 2*nb_freq*ch;
878                 i = i_start + ch;
879                 for(x = 0; x < 2*nb_freq; x++) {
880                     double w= (x-nb_freq)*(1.0/nb_freq);
881                     data[ch][x]= s->sample_array[i]*(1.0-w*w);
882                     i += channels;
883                     if (i >= SAMPLE_ARRAY_SIZE)
884                         i -= SAMPLE_ARRAY_SIZE;
885                 }
886                 av_rdft_calc(s->rdft, data[ch]);
887             }
888             //least efficient way to do this, we should of course directly access it but its more than fast enough
889             for(y=0; y<s->height; y++){
890                 double w= 1/sqrt(nb_freq);
891                 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]));
892                 int b= (nb_display_channels == 2 ) ? sqrt(w*sqrt(data[1][2*y+0]*data[1][2*y+0]
893                        + data[1][2*y+1]*data[1][2*y+1])) : a;
894                 a= FFMIN(a,255);
895                 b= FFMIN(b,255);
896                 fgcolor = SDL_MapRGB(screen->format, a, b, (a+b)/2);
897
898                 fill_rectangle(screen,
899                             s->xpos, s->height-y, 1, 1,
900                             fgcolor);
901             }
902         }
903         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
904         s->xpos++;
905         if(s->xpos >= s->width)
906             s->xpos= s->xleft;
907     }
908 }
909
910 static int video_open(VideoState *is){
911     int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
912     int w,h;
913
914     if(is_full_screen) flags |= SDL_FULLSCREEN;
915     else               flags |= SDL_RESIZABLE;
916
917     if (is_full_screen && fs_screen_width) {
918         w = fs_screen_width;
919         h = fs_screen_height;
920     } else if(!is_full_screen && screen_width){
921         w = screen_width;
922         h = screen_height;
923 #if CONFIG_AVFILTER
924     }else if (is->out_video_filter && is->out_video_filter->inputs[0]){
925         w = is->out_video_filter->inputs[0]->w;
926         h = is->out_video_filter->inputs[0]->h;
927 #else
928     }else if (is->video_st && is->video_st->codec->width){
929         w = is->video_st->codec->width;
930         h = is->video_st->codec->height;
931 #endif
932     } else {
933         w = 640;
934         h = 480;
935     }
936     if(screen && is->width == screen->w && screen->w == w
937        && is->height== screen->h && screen->h == h)
938         return 0;
939
940 #ifndef __APPLE__
941     screen = SDL_SetVideoMode(w, h, 0, flags);
942 #else
943     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
944     screen = SDL_SetVideoMode(w, h, 24, flags);
945 #endif
946     if (!screen) {
947         fprintf(stderr, "SDL: could not set video mode - exiting\n");
948         return -1;
949     }
950     if (!window_title)
951         window_title = input_filename;
952     SDL_WM_SetCaption(window_title, window_title);
953
954     is->width = screen->w;
955     is->height = screen->h;
956
957     return 0;
958 }
959
960 /* display the current picture, if any */
961 static void video_display(VideoState *is)
962 {
963     if(!screen)
964         video_open(cur_stream);
965     if (is->audio_st && is->show_audio)
966         video_audio_display(is);
967     else if (is->video_st)
968         video_image_display(is);
969 }
970
971 static int refresh_thread(void *opaque)
972 {
973     VideoState *is= opaque;
974     while(!is->abort_request){
975         SDL_Event event;
976         event.type = FF_REFRESH_EVENT;
977         event.user.data1 = opaque;
978         if(!is->refresh){
979             is->refresh=1;
980             SDL_PushEvent(&event);
981         }
982         usleep(is->audio_st && is->show_audio ? rdftspeed*1000 : 5000); //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
983     }
984     return 0;
985 }
986
987 /* get the current audio clock value */
988 static double get_audio_clock(VideoState *is)
989 {
990     double pts;
991     int hw_buf_size, bytes_per_sec;
992     pts = is->audio_clock;
993     hw_buf_size = audio_write_get_buf_size(is);
994     bytes_per_sec = 0;
995     if (is->audio_st) {
996         bytes_per_sec = is->audio_st->codec->sample_rate *
997             2 * is->audio_st->codec->channels;
998     }
999     if (bytes_per_sec)
1000         pts -= (double)hw_buf_size / bytes_per_sec;
1001     return pts;
1002 }
1003
1004 /* get the current video clock value */
1005 static double get_video_clock(VideoState *is)
1006 {
1007     if (is->paused) {
1008         return is->video_current_pts;
1009     } else {
1010         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1011     }
1012 }
1013
1014 /* get the current external clock value */
1015 static double get_external_clock(VideoState *is)
1016 {
1017     int64_t ti;
1018     ti = av_gettime();
1019     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1020 }
1021
1022 /* get the current master clock value */
1023 static double get_master_clock(VideoState *is)
1024 {
1025     double val;
1026
1027     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1028         if (is->video_st)
1029             val = get_video_clock(is);
1030         else
1031             val = get_audio_clock(is);
1032     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1033         if (is->audio_st)
1034             val = get_audio_clock(is);
1035         else
1036             val = get_video_clock(is);
1037     } else {
1038         val = get_external_clock(is);
1039     }
1040     return val;
1041 }
1042
1043 /* seek in the stream */
1044 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1045 {
1046     if (!is->seek_req) {
1047         is->seek_pos = pos;
1048         is->seek_rel = rel;
1049         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1050         if (seek_by_bytes)
1051             is->seek_flags |= AVSEEK_FLAG_BYTE;
1052         is->seek_req = 1;
1053     }
1054 }
1055
1056 /* pause or resume the video */
1057 static void stream_pause(VideoState *is)
1058 {
1059     if (is->paused) {
1060         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1061         if(is->read_pause_return != AVERROR(ENOSYS)){
1062             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1063         }
1064         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1065     }
1066     is->paused = !is->paused;
1067 }
1068
1069 static double compute_target_time(double frame_current_pts, VideoState *is)
1070 {
1071     double delay, sync_threshold, diff;
1072
1073     /* compute nominal delay */
1074     delay = frame_current_pts - is->frame_last_pts;
1075     if (delay <= 0 || delay >= 10.0) {
1076         /* if incorrect delay, use previous one */
1077         delay = is->frame_last_delay;
1078     } else {
1079         is->frame_last_delay = delay;
1080     }
1081     is->frame_last_pts = frame_current_pts;
1082
1083     /* update delay to follow master synchronisation source */
1084     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1085          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1086         /* if video is slave, we try to correct big delays by
1087            duplicating or deleting a frame */
1088         diff = get_video_clock(is) - get_master_clock(is);
1089
1090         /* skip or repeat frame. We take into account the
1091            delay to compute the threshold. I still don't know
1092            if it is the best guess */
1093         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1094         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1095             if (diff <= -sync_threshold)
1096                 delay = 0;
1097             else if (diff >= sync_threshold)
1098                 delay = 2 * delay;
1099         }
1100     }
1101     is->frame_timer += delay;
1102 #if defined(DEBUG_SYNC)
1103     printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1104             delay, actual_delay, frame_current_pts, -diff);
1105 #endif
1106
1107     return is->frame_timer;
1108 }
1109
1110 /* called to display each frame */
1111 static void video_refresh_timer(void *opaque)
1112 {
1113     VideoState *is = opaque;
1114     VideoPicture *vp;
1115
1116     SubPicture *sp, *sp2;
1117
1118     if (is->video_st) {
1119 retry:
1120         if (is->pictq_size == 0) {
1121             //nothing to do, no picture to display in the que
1122         } else {
1123             double time= av_gettime()/1000000.0;
1124             double next_target;
1125             /* dequeue the picture */
1126             vp = &is->pictq[is->pictq_rindex];
1127
1128             if(time < vp->target_clock)
1129                 return;
1130             /* update current video pts */
1131             is->video_current_pts = vp->pts;
1132             is->video_current_pts_drift = is->video_current_pts - time;
1133             is->video_current_pos = vp->pos;
1134             if(is->pictq_size > 1){
1135                 VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
1136                 assert(nextvp->target_clock >= vp->target_clock);
1137                 next_target= nextvp->target_clock;
1138             }else{
1139                 next_target= vp->target_clock + is->video_clock - vp->pts; //FIXME pass durations cleanly
1140             }
1141             if(framedrop && time > next_target){
1142                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1143                 if(is->pictq_size > 1 || time > next_target + 0.5){
1144                     /* update queue size and signal for next picture */
1145                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1146                         is->pictq_rindex = 0;
1147
1148                     SDL_LockMutex(is->pictq_mutex);
1149                     is->pictq_size--;
1150                     SDL_CondSignal(is->pictq_cond);
1151                     SDL_UnlockMutex(is->pictq_mutex);
1152                     goto retry;
1153                 }
1154             }
1155
1156             if(is->subtitle_st) {
1157                 if (is->subtitle_stream_changed) {
1158                     SDL_LockMutex(is->subpq_mutex);
1159
1160                     while (is->subpq_size) {
1161                         free_subpicture(&is->subpq[is->subpq_rindex]);
1162
1163                         /* update queue size and signal for next picture */
1164                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1165                             is->subpq_rindex = 0;
1166
1167                         is->subpq_size--;
1168                     }
1169                     is->subtitle_stream_changed = 0;
1170
1171                     SDL_CondSignal(is->subpq_cond);
1172                     SDL_UnlockMutex(is->subpq_mutex);
1173                 } else {
1174                     if (is->subpq_size > 0) {
1175                         sp = &is->subpq[is->subpq_rindex];
1176
1177                         if (is->subpq_size > 1)
1178                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1179                         else
1180                             sp2 = NULL;
1181
1182                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1183                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1184                         {
1185                             free_subpicture(sp);
1186
1187                             /* update queue size and signal for next picture */
1188                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1189                                 is->subpq_rindex = 0;
1190
1191                             SDL_LockMutex(is->subpq_mutex);
1192                             is->subpq_size--;
1193                             SDL_CondSignal(is->subpq_cond);
1194                             SDL_UnlockMutex(is->subpq_mutex);
1195                         }
1196                     }
1197                 }
1198             }
1199
1200             /* display picture */
1201             if (!display_disable)
1202                 video_display(is);
1203
1204             /* update queue size and signal for next picture */
1205             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1206                 is->pictq_rindex = 0;
1207
1208             SDL_LockMutex(is->pictq_mutex);
1209             is->pictq_size--;
1210             SDL_CondSignal(is->pictq_cond);
1211             SDL_UnlockMutex(is->pictq_mutex);
1212         }
1213     } else if (is->audio_st) {
1214         /* draw the next audio frame */
1215
1216         /* if only audio stream, then display the audio bars (better
1217            than nothing, just to test the implementation */
1218
1219         /* display picture */
1220         if (!display_disable)
1221             video_display(is);
1222     }
1223     if (show_status) {
1224         static int64_t last_time;
1225         int64_t cur_time;
1226         int aqsize, vqsize, sqsize;
1227         double av_diff;
1228
1229         cur_time = av_gettime();
1230         if (!last_time || (cur_time - last_time) >= 30000) {
1231             aqsize = 0;
1232             vqsize = 0;
1233             sqsize = 0;
1234             if (is->audio_st)
1235                 aqsize = is->audioq.size;
1236             if (is->video_st)
1237                 vqsize = is->videoq.size;
1238             if (is->subtitle_st)
1239                 sqsize = is->subtitleq.size;
1240             av_diff = 0;
1241             if (is->audio_st && is->video_st)
1242                 av_diff = get_audio_clock(is) - get_video_clock(is);
1243             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1244                    get_master_clock(is),
1245                    av_diff,
1246                    FFMAX(is->skip_frames-1, 0),
1247                    aqsize / 1024,
1248                    vqsize / 1024,
1249                    sqsize,
1250                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1251                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1252             fflush(stdout);
1253             last_time = cur_time;
1254         }
1255     }
1256 }
1257
1258 static void stream_close(VideoState *is)
1259 {
1260     VideoPicture *vp;
1261     int i;
1262     /* XXX: use a special url_shutdown call to abort parse cleanly */
1263     is->abort_request = 1;
1264     SDL_WaitThread(is->parse_tid, NULL);
1265     SDL_WaitThread(is->refresh_tid, NULL);
1266
1267     /* free all pictures */
1268     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1269         vp = &is->pictq[i];
1270 #if CONFIG_AVFILTER
1271         if (vp->picref) {
1272             avfilter_unref_buffer(vp->picref);
1273             vp->picref = NULL;
1274         }
1275 #endif
1276         if (vp->bmp) {
1277             SDL_FreeYUVOverlay(vp->bmp);
1278             vp->bmp = NULL;
1279         }
1280     }
1281     SDL_DestroyMutex(is->pictq_mutex);
1282     SDL_DestroyCond(is->pictq_cond);
1283     SDL_DestroyMutex(is->subpq_mutex);
1284     SDL_DestroyCond(is->subpq_cond);
1285 #if !CONFIG_AVFILTER
1286     if (is->img_convert_ctx)
1287         sws_freeContext(is->img_convert_ctx);
1288 #endif
1289     av_free(is);
1290 }
1291
1292 static void do_exit(void)
1293 {
1294     if (cur_stream) {
1295         stream_close(cur_stream);
1296         cur_stream = NULL;
1297     }
1298     uninit_opts();
1299 #if CONFIG_AVFILTER
1300     avfilter_uninit();
1301 #endif
1302     if (show_status)
1303         printf("\n");
1304     SDL_Quit();
1305     av_log(NULL, AV_LOG_QUIET, "");
1306     exit(0);
1307 }
1308
1309 /* allocate a picture (needs to do that in main thread to avoid
1310    potential locking problems */
1311 static void alloc_picture(void *opaque)
1312 {
1313     VideoState *is = opaque;
1314     VideoPicture *vp;
1315
1316     vp = &is->pictq[is->pictq_windex];
1317
1318     if (vp->bmp)
1319         SDL_FreeYUVOverlay(vp->bmp);
1320
1321 #if CONFIG_AVFILTER
1322     if (vp->picref)
1323         avfilter_unref_buffer(vp->picref);
1324     vp->picref = NULL;
1325
1326     vp->width   = is->out_video_filter->inputs[0]->w;
1327     vp->height  = is->out_video_filter->inputs[0]->h;
1328     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1329 #else
1330     vp->width   = is->video_st->codec->width;
1331     vp->height  = is->video_st->codec->height;
1332     vp->pix_fmt = is->video_st->codec->pix_fmt;
1333 #endif
1334
1335     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1336                                    SDL_YV12_OVERLAY,
1337                                    screen);
1338     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1339         /* SDL allocates a buffer smaller than requested if the video
1340          * overlay hardware is unable to support the requested size. */
1341         fprintf(stderr, "Error: the video system does not support an image\n"
1342                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1343                         "to reduce the image size.\n", vp->width, vp->height );
1344         do_exit();
1345     }
1346
1347     SDL_LockMutex(is->pictq_mutex);
1348     vp->allocated = 1;
1349     SDL_CondSignal(is->pictq_cond);
1350     SDL_UnlockMutex(is->pictq_mutex);
1351 }
1352
1353 /**
1354  *
1355  * @param pts the dts of the pkt / pts of the frame and guessed if not known
1356  */
1357 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1358 {
1359     VideoPicture *vp;
1360 #if CONFIG_AVFILTER
1361     AVPicture pict_src;
1362 #endif
1363     /* wait until we have space to put a new picture */
1364     SDL_LockMutex(is->pictq_mutex);
1365
1366     if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1367         is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
1368
1369     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1370            !is->videoq.abort_request) {
1371         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1372     }
1373     SDL_UnlockMutex(is->pictq_mutex);
1374
1375     if (is->videoq.abort_request)
1376         return -1;
1377
1378     vp = &is->pictq[is->pictq_windex];
1379
1380     /* alloc or resize hardware picture buffer */
1381     if (!vp->bmp ||
1382 #if CONFIG_AVFILTER
1383         vp->width  != is->out_video_filter->inputs[0]->w ||
1384         vp->height != is->out_video_filter->inputs[0]->h) {
1385 #else
1386         vp->width != is->video_st->codec->width ||
1387         vp->height != is->video_st->codec->height) {
1388 #endif
1389         SDL_Event event;
1390
1391         vp->allocated = 0;
1392
1393         /* the allocation must be done in the main thread to avoid
1394            locking problems */
1395         event.type = FF_ALLOC_EVENT;
1396         event.user.data1 = is;
1397         SDL_PushEvent(&event);
1398
1399         /* wait until the picture is allocated */
1400         SDL_LockMutex(is->pictq_mutex);
1401         while (!vp->allocated && !is->videoq.abort_request) {
1402             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1403         }
1404         SDL_UnlockMutex(is->pictq_mutex);
1405
1406         if (is->videoq.abort_request)
1407             return -1;
1408     }
1409
1410     /* if the frame is not skipped, then display it */
1411     if (vp->bmp) {
1412         AVPicture pict;
1413 #if CONFIG_AVFILTER
1414         if(vp->picref)
1415             avfilter_unref_buffer(vp->picref);
1416         vp->picref = src_frame->opaque;
1417 #endif
1418
1419         /* get a pointer on the bitmap */
1420         SDL_LockYUVOverlay (vp->bmp);
1421
1422         memset(&pict,0,sizeof(AVPicture));
1423         pict.data[0] = vp->bmp->pixels[0];
1424         pict.data[1] = vp->bmp->pixels[2];
1425         pict.data[2] = vp->bmp->pixels[1];
1426
1427         pict.linesize[0] = vp->bmp->pitches[0];
1428         pict.linesize[1] = vp->bmp->pitches[2];
1429         pict.linesize[2] = vp->bmp->pitches[1];
1430
1431 #if CONFIG_AVFILTER
1432         pict_src.data[0] = src_frame->data[0];
1433         pict_src.data[1] = src_frame->data[1];
1434         pict_src.data[2] = src_frame->data[2];
1435
1436         pict_src.linesize[0] = src_frame->linesize[0];
1437         pict_src.linesize[1] = src_frame->linesize[1];
1438         pict_src.linesize[2] = src_frame->linesize[2];
1439
1440         //FIXME use direct rendering
1441         av_picture_copy(&pict, &pict_src,
1442                         vp->pix_fmt, vp->width, vp->height);
1443 #else
1444         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1445         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1446             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1447             PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1448         if (is->img_convert_ctx == NULL) {
1449             fprintf(stderr, "Cannot initialize the conversion context\n");
1450             exit(1);
1451         }
1452         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1453                   0, vp->height, pict.data, pict.linesize);
1454 #endif
1455         /* update the bitmap content */
1456         SDL_UnlockYUVOverlay(vp->bmp);
1457
1458         vp->pts = pts;
1459         vp->pos = pos;
1460
1461         /* now we can update the picture count */
1462         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1463             is->pictq_windex = 0;
1464         SDL_LockMutex(is->pictq_mutex);
1465         vp->target_clock= compute_target_time(vp->pts, is);
1466
1467         is->pictq_size++;
1468         SDL_UnlockMutex(is->pictq_mutex);
1469     }
1470     return 0;
1471 }
1472
1473 /**
1474  * compute the exact PTS for the picture if it is omitted in the stream
1475  * @param pts1 the dts of the pkt / pts of the frame
1476  */
1477 static int output_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1478 {
1479     double frame_delay, pts;
1480
1481     pts = pts1;
1482
1483     if (pts != 0) {
1484         /* update video clock with pts, if present */
1485         is->video_clock = pts;
1486     } else {
1487         pts = is->video_clock;
1488     }
1489     /* update video clock for next frame */
1490     frame_delay = av_q2d(is->video_st->codec->time_base);
1491     /* for MPEG2, the frame can be repeated, so we update the
1492        clock accordingly */
1493     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1494     is->video_clock += frame_delay;
1495
1496 #if defined(DEBUG_SYNC) && 0
1497     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1498            av_get_pict_type_char(src_frame->pict_type), pts, pts1);
1499 #endif
1500     return queue_picture(is, src_frame, pts, pos);
1501 }
1502
1503 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1504 {
1505     int len1, got_picture, i;
1506
1507     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1508         return -1;
1509
1510     if (pkt->data == flush_pkt.data) {
1511         avcodec_flush_buffers(is->video_st->codec);
1512
1513         SDL_LockMutex(is->pictq_mutex);
1514         //Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1515         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1516             is->pictq[i].target_clock= 0;
1517         }
1518         while (is->pictq_size && !is->videoq.abort_request) {
1519             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1520         }
1521         is->video_current_pos = -1;
1522         SDL_UnlockMutex(is->pictq_mutex);
1523
1524         is->frame_last_pts = AV_NOPTS_VALUE;
1525         is->frame_last_delay = 0;
1526         is->frame_timer = (double)av_gettime() / 1000000.0;
1527         is->skip_frames = 1;
1528         is->skip_frames_index = 0;
1529         return 0;
1530     }
1531
1532     len1 = avcodec_decode_video2(is->video_st->codec,
1533                                  frame, &got_picture,
1534                                  pkt);
1535
1536     if (got_picture) {
1537         if (decoder_reorder_pts == -1) {
1538             *pts = frame->best_effort_timestamp;
1539         } else if (decoder_reorder_pts) {
1540             *pts = frame->pkt_pts;
1541         } else {
1542             *pts = frame->pkt_dts;
1543         }
1544
1545         if (*pts == AV_NOPTS_VALUE) {
1546             *pts = 0;
1547         }
1548
1549         is->skip_frames_index += 1;
1550         if(is->skip_frames_index >= is->skip_frames){
1551             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1552             return 1;
1553         }
1554
1555     }
1556     return 0;
1557 }
1558
1559 #if CONFIG_AVFILTER
1560 typedef struct {
1561     VideoState *is;
1562     AVFrame *frame;
1563     int use_dr1;
1564 } FilterPriv;
1565
1566 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1567 {
1568     AVFilterContext *ctx = codec->opaque;
1569     AVFilterBufferRef  *ref;
1570     int perms = AV_PERM_WRITE;
1571     int i, w, h, stride[4];
1572     unsigned edge;
1573     int pixel_size;
1574
1575     av_assert0(codec->flags & CODEC_FLAG_EMU_EDGE);
1576
1577     if (codec->codec->capabilities & CODEC_CAP_NEG_LINESIZES)
1578         perms |= AV_PERM_NEG_LINESIZES;
1579
1580     if(pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1581         if(pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1582         if(pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1583         if(pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1584     }
1585     if(pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1586
1587     w = codec->width;
1588     h = codec->height;
1589
1590     if(av_image_check_size(w, h, 0, codec))
1591         return -1;
1592
1593     avcodec_align_dimensions2(codec, &w, &h, stride);
1594     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1595     w += edge << 1;
1596     h += edge << 1;
1597
1598     if(!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1599         return -1;
1600
1601     pixel_size = av_pix_fmt_descriptors[ref->format].comp[0].step_minus1+1;
1602     ref->video->w = codec->width;
1603     ref->video->h = codec->height;
1604     for(i = 0; i < 4; i ++) {
1605         unsigned hshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_w : 0;
1606         unsigned vshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_h : 0;
1607
1608         if (ref->data[i]) {
1609             ref->data[i]    += ((edge * pixel_size) >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1610         }
1611         pic->data[i]     = ref->data[i];
1612         pic->linesize[i] = ref->linesize[i];
1613     }
1614     pic->opaque = ref;
1615     pic->age    = INT_MAX;
1616     pic->type   = FF_BUFFER_TYPE_USER;
1617     pic->reordered_opaque = codec->reordered_opaque;
1618     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1619     else           pic->pkt_pts = AV_NOPTS_VALUE;
1620     return 0;
1621 }
1622
1623 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1624 {
1625     memset(pic->data, 0, sizeof(pic->data));
1626     avfilter_unref_buffer(pic->opaque);
1627 }
1628
1629 static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
1630 {
1631     AVFilterBufferRef *ref = pic->opaque;
1632
1633     if (pic->data[0] == NULL) {
1634         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
1635         return codec->get_buffer(codec, pic);
1636     }
1637
1638     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||
1639         (codec->pix_fmt != ref->format)) {
1640         av_log(codec, AV_LOG_ERROR, "Picture properties changed.\n");
1641         return -1;
1642     }
1643
1644     pic->reordered_opaque = codec->reordered_opaque;
1645     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1646     else           pic->pkt_pts = AV_NOPTS_VALUE;
1647     return 0;
1648 }
1649
1650 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1651 {
1652     FilterPriv *priv = ctx->priv;
1653     AVCodecContext *codec;
1654     if(!opaque) return -1;
1655
1656     priv->is = opaque;
1657     codec    = priv->is->video_st->codec;
1658     codec->opaque = ctx;
1659     if((codec->codec->capabilities & CODEC_CAP_DR1)
1660     ) {
1661         codec->flags |= CODEC_FLAG_EMU_EDGE;
1662         priv->use_dr1 = 1;
1663         codec->get_buffer     = input_get_buffer;
1664         codec->release_buffer = input_release_buffer;
1665         codec->reget_buffer   = input_reget_buffer;
1666         codec->thread_safe_callbacks = 1;
1667     }
1668
1669     priv->frame = avcodec_alloc_frame();
1670
1671     return 0;
1672 }
1673
1674 static void input_uninit(AVFilterContext *ctx)
1675 {
1676     FilterPriv *priv = ctx->priv;
1677     av_free(priv->frame);
1678 }
1679
1680 static int input_request_frame(AVFilterLink *link)
1681 {
1682     FilterPriv *priv = link->src->priv;
1683     AVFilterBufferRef *picref;
1684     int64_t pts = 0;
1685     AVPacket pkt;
1686     int ret;
1687
1688     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1689         av_free_packet(&pkt);
1690     if (ret < 0)
1691         return -1;
1692
1693     if(priv->use_dr1) {
1694         picref = avfilter_ref_buffer(priv->frame->opaque, ~0);
1695     } else {
1696         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1697         av_image_copy(picref->data, picref->linesize,
1698                       priv->frame->data, priv->frame->linesize,
1699                       picref->format, link->w, link->h);
1700     }
1701     av_free_packet(&pkt);
1702
1703     picref->pts = pts;
1704     picref->pos = pkt.pos;
1705     picref->video->pixel_aspect = priv->is->video_st->codec->sample_aspect_ratio;
1706     avfilter_start_frame(link, picref);
1707     avfilter_draw_slice(link, 0, link->h, 1);
1708     avfilter_end_frame(link);
1709
1710     return 0;
1711 }
1712
1713 static int input_query_formats(AVFilterContext *ctx)
1714 {
1715     FilterPriv *priv = ctx->priv;
1716     enum PixelFormat pix_fmts[] = {
1717         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1718     };
1719
1720     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1721     return 0;
1722 }
1723
1724 static int input_config_props(AVFilterLink *link)
1725 {
1726     FilterPriv *priv  = link->src->priv;
1727     AVCodecContext *c = priv->is->video_st->codec;
1728
1729     link->w = c->width;
1730     link->h = c->height;
1731     link->time_base = priv->is->video_st->time_base;
1732
1733     return 0;
1734 }
1735
1736 static AVFilter input_filter =
1737 {
1738     .name      = "ffplay_input",
1739
1740     .priv_size = sizeof(FilterPriv),
1741
1742     .init      = input_init,
1743     .uninit    = input_uninit,
1744
1745     .query_formats = input_query_formats,
1746
1747     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1748     .outputs   = (AVFilterPad[]) {{ .name = "default",
1749                                     .type = AVMEDIA_TYPE_VIDEO,
1750                                     .request_frame = input_request_frame,
1751                                     .config_props  = input_config_props, },
1752                                   { .name = NULL }},
1753 };
1754
1755 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1756 {
1757     char sws_flags_str[128];
1758     int ret;
1759     FFSinkContext ffsink_ctx = { .pix_fmt = PIX_FMT_YUV420P };
1760     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1761     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1762     graph->scale_sws_opts = av_strdup(sws_flags_str);
1763
1764     if ((ret = avfilter_graph_create_filter(&filt_src, &input_filter, "src",
1765                                             NULL, is, graph)) < 0)
1766         goto the_end;
1767     if ((ret = avfilter_graph_create_filter(&filt_out, &ffsink, "out",
1768                                             NULL, &ffsink_ctx, graph)) < 0)
1769         goto the_end;
1770
1771     if(vfilters) {
1772         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
1773         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
1774
1775         outputs->name    = av_strdup("in");
1776         outputs->filter_ctx = filt_src;
1777         outputs->pad_idx = 0;
1778         outputs->next    = NULL;
1779
1780         inputs->name    = av_strdup("out");
1781         inputs->filter_ctx = filt_out;
1782         inputs->pad_idx = 0;
1783         inputs->next    = NULL;
1784
1785         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1786             goto the_end;
1787         av_freep(&vfilters);
1788     } else {
1789         if ((ret = avfilter_link(filt_src, 0, filt_out, 0)) < 0)
1790             goto the_end;
1791     }
1792
1793     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1794         goto the_end;
1795
1796     is->out_video_filter = filt_out;
1797 the_end:
1798     return ret;
1799 }
1800
1801 #endif  /* CONFIG_AVFILTER */
1802
1803 static int video_thread(void *arg)
1804 {
1805     VideoState *is = arg;
1806     AVFrame *frame= avcodec_alloc_frame();
1807     int64_t pts_int;
1808     double pts;
1809     int ret;
1810
1811 #if CONFIG_AVFILTER
1812     AVFilterGraph *graph = avfilter_graph_alloc();
1813     AVFilterContext *filt_out = NULL;
1814     int64_t pos;
1815
1816     if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1817         goto the_end;
1818     filt_out = is->out_video_filter;
1819 #endif
1820
1821     for(;;) {
1822 #if !CONFIG_AVFILTER
1823         AVPacket pkt;
1824 #else
1825         AVFilterBufferRef *picref;
1826         AVRational tb;
1827 #endif
1828         while (is->paused && !is->videoq.abort_request)
1829             SDL_Delay(10);
1830 #if CONFIG_AVFILTER
1831         ret = get_filtered_video_frame(filt_out, frame, &picref, &tb);
1832         if (picref) {
1833             pts_int = picref->pts;
1834             pos     = picref->pos;
1835             frame->opaque = picref;
1836         }
1837
1838         if (av_cmp_q(tb, is->video_st->time_base)) {
1839             av_unused int64_t pts1 = pts_int;
1840             pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1841             av_dlog(NULL, "video_thread(): "
1842                     "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1843                     tb.num, tb.den, pts1,
1844                     is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1845         }
1846 #else
1847         ret = get_video_frame(is, frame, &pts_int, &pkt);
1848 #endif
1849
1850         if (ret < 0) goto the_end;
1851
1852         if (!ret)
1853             continue;
1854
1855         pts = pts_int*av_q2d(is->video_st->time_base);
1856
1857 #if CONFIG_AVFILTER
1858         ret = output_picture(is, frame, pts, pos);
1859 #else
1860         ret = output_picture(is, frame, pts,  pkt.pos);
1861         av_free_packet(&pkt);
1862 #endif
1863         if (ret < 0)
1864             goto the_end;
1865
1866         if (step)
1867             if (cur_stream)
1868                 stream_pause(cur_stream);
1869     }
1870  the_end:
1871 #if CONFIG_AVFILTER
1872     avfilter_graph_free(&graph);
1873 #endif
1874     av_free(frame);
1875     return 0;
1876 }
1877
1878 static int subtitle_thread(void *arg)
1879 {
1880     VideoState *is = arg;
1881     SubPicture *sp;
1882     AVPacket pkt1, *pkt = &pkt1;
1883     int len1, got_subtitle;
1884     double pts;
1885     int i, j;
1886     int r, g, b, y, u, v, a;
1887
1888     for(;;) {
1889         while (is->paused && !is->subtitleq.abort_request) {
1890             SDL_Delay(10);
1891         }
1892         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1893             break;
1894
1895         if(pkt->data == flush_pkt.data){
1896             avcodec_flush_buffers(is->subtitle_st->codec);
1897             continue;
1898         }
1899         SDL_LockMutex(is->subpq_mutex);
1900         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1901                !is->subtitleq.abort_request) {
1902             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1903         }
1904         SDL_UnlockMutex(is->subpq_mutex);
1905
1906         if (is->subtitleq.abort_request)
1907             goto the_end;
1908
1909         sp = &is->subpq[is->subpq_windex];
1910
1911        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1912            this packet, if any */
1913         pts = 0;
1914         if (pkt->pts != AV_NOPTS_VALUE)
1915             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1916
1917         len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1918                                     &sp->sub, &got_subtitle,
1919                                     pkt);
1920 //            if (len1 < 0)
1921 //                break;
1922         if (got_subtitle && sp->sub.format == 0) {
1923             sp->pts = pts;
1924
1925             for (i = 0; i < sp->sub.num_rects; i++)
1926             {
1927                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1928                 {
1929                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1930                     y = RGB_TO_Y_CCIR(r, g, b);
1931                     u = RGB_TO_U_CCIR(r, g, b, 0);
1932                     v = RGB_TO_V_CCIR(r, g, b, 0);
1933                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1934                 }
1935             }
1936
1937             /* now we can update the picture count */
1938             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1939                 is->subpq_windex = 0;
1940             SDL_LockMutex(is->subpq_mutex);
1941             is->subpq_size++;
1942             SDL_UnlockMutex(is->subpq_mutex);
1943         }
1944         av_free_packet(pkt);
1945 //        if (step)
1946 //            if (cur_stream)
1947 //                stream_pause(cur_stream);
1948     }
1949  the_end:
1950     return 0;
1951 }
1952
1953 /* copy samples for viewing in editor window */
1954 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1955 {
1956     int size, len, channels;
1957
1958     channels = is->audio_st->codec->channels;
1959
1960     size = samples_size / sizeof(short);
1961     while (size > 0) {
1962         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1963         if (len > size)
1964             len = size;
1965         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1966         samples += len;
1967         is->sample_array_index += len;
1968         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1969             is->sample_array_index = 0;
1970         size -= len;
1971     }
1972 }
1973
1974 /* return the new audio buffer size (samples can be added or deleted
1975    to get better sync if video or external master clock) */
1976 static int synchronize_audio(VideoState *is, short *samples,
1977                              int samples_size1, double pts)
1978 {
1979     int n, samples_size;
1980     double ref_clock;
1981
1982     n = 2 * is->audio_st->codec->channels;
1983     samples_size = samples_size1;
1984
1985     /* if not master, then we try to remove or add samples to correct the clock */
1986     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1987          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1988         double diff, avg_diff;
1989         int wanted_size, min_size, max_size, nb_samples;
1990
1991         ref_clock = get_master_clock(is);
1992         diff = get_audio_clock(is) - ref_clock;
1993
1994         if (diff < AV_NOSYNC_THRESHOLD) {
1995             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1996             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1997                 /* not enough measures to have a correct estimate */
1998                 is->audio_diff_avg_count++;
1999             } else {
2000                 /* estimate the A-V difference */
2001                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2002
2003                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2004                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
2005                     nb_samples = samples_size / n;
2006
2007                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2008                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2009                     if (wanted_size < min_size)
2010                         wanted_size = min_size;
2011                     else if (wanted_size > max_size)
2012                         wanted_size = max_size;
2013
2014                     /* add or remove samples to correction the synchro */
2015                     if (wanted_size < samples_size) {
2016                         /* remove samples */
2017                         samples_size = wanted_size;
2018                     } else if (wanted_size > samples_size) {
2019                         uint8_t *samples_end, *q;
2020                         int nb;
2021
2022                         /* add samples */
2023                         nb = (samples_size - wanted_size);
2024                         samples_end = (uint8_t *)samples + samples_size - n;
2025                         q = samples_end + n;
2026                         while (nb > 0) {
2027                             memcpy(q, samples_end, n);
2028                             q += n;
2029                             nb -= n;
2030                         }
2031                         samples_size = wanted_size;
2032                     }
2033                 }
2034 #if 0
2035                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
2036                        diff, avg_diff, samples_size - samples_size1,
2037                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
2038 #endif
2039             }
2040         } else {
2041             /* too big difference : may be initial PTS errors, so
2042                reset A-V filter */
2043             is->audio_diff_avg_count = 0;
2044             is->audio_diff_cum = 0;
2045         }
2046     }
2047
2048     return samples_size;
2049 }
2050
2051 /* decode one audio frame and returns its uncompressed size */
2052 static int audio_decode_frame(VideoState *is, double *pts_ptr)
2053 {
2054     AVPacket *pkt_temp = &is->audio_pkt_temp;
2055     AVPacket *pkt = &is->audio_pkt;
2056     AVCodecContext *dec= is->audio_st->codec;
2057     int n, len1, data_size;
2058     double pts;
2059
2060     for(;;) {
2061         /* NOTE: the audio packet can contain several frames */
2062         while (pkt_temp->size > 0) {
2063             data_size = sizeof(is->audio_buf1);
2064             len1 = avcodec_decode_audio3(dec,
2065                                         (int16_t *)is->audio_buf1, &data_size,
2066                                         pkt_temp);
2067             if (len1 < 0) {
2068                 /* if error, we skip the frame */
2069                 pkt_temp->size = 0;
2070                 break;
2071             }
2072
2073             pkt_temp->data += len1;
2074             pkt_temp->size -= len1;
2075             if (data_size <= 0)
2076                 continue;
2077
2078             if (dec->sample_fmt != is->audio_src_fmt) {
2079                 if (is->reformat_ctx)
2080                     av_audio_convert_free(is->reformat_ctx);
2081                 is->reformat_ctx= av_audio_convert_alloc(AV_SAMPLE_FMT_S16, 1,
2082                                                          dec->sample_fmt, 1, NULL, 0);
2083                 if (!is->reformat_ctx) {
2084                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2085                         av_get_sample_fmt_name(dec->sample_fmt),
2086                         av_get_sample_fmt_name(AV_SAMPLE_FMT_S16));
2087                         break;
2088                 }
2089                 is->audio_src_fmt= dec->sample_fmt;
2090             }
2091
2092             if (is->reformat_ctx) {
2093                 const void *ibuf[6]= {is->audio_buf1};
2094                 void *obuf[6]= {is->audio_buf2};
2095                 int istride[6]= {av_get_bits_per_sample_fmt(dec->sample_fmt)/8};
2096                 int ostride[6]= {2};
2097                 int len= data_size/istride[0];
2098                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2099                     printf("av_audio_convert() failed\n");
2100                     break;
2101                 }
2102                 is->audio_buf= is->audio_buf2;
2103                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2104                           remove this legacy cruft */
2105                 data_size= len*2;
2106             }else{
2107                 is->audio_buf= is->audio_buf1;
2108             }
2109
2110             /* if no pts, then compute it */
2111             pts = is->audio_clock;
2112             *pts_ptr = pts;
2113             n = 2 * dec->channels;
2114             is->audio_clock += (double)data_size /
2115                 (double)(n * dec->sample_rate);
2116 #if defined(DEBUG_SYNC)
2117             {
2118                 static double last_clock;
2119                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2120                        is->audio_clock - last_clock,
2121                        is->audio_clock, pts);
2122                 last_clock = is->audio_clock;
2123             }
2124 #endif
2125             return data_size;
2126         }
2127
2128         /* free the current packet */
2129         if (pkt->data)
2130             av_free_packet(pkt);
2131
2132         if (is->paused || is->audioq.abort_request) {
2133             return -1;
2134         }
2135
2136         /* read next packet */
2137         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2138             return -1;
2139         if(pkt->data == flush_pkt.data){
2140             avcodec_flush_buffers(dec);
2141             continue;
2142         }
2143
2144         pkt_temp->data = pkt->data;
2145         pkt_temp->size = pkt->size;
2146
2147         /* if update the audio clock with the pts */
2148         if (pkt->pts != AV_NOPTS_VALUE) {
2149             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2150         }
2151     }
2152 }
2153
2154 /* get the current audio output buffer size, in samples. With SDL, we
2155    cannot have a precise information */
2156 static int audio_write_get_buf_size(VideoState *is)
2157 {
2158     return is->audio_buf_size - is->audio_buf_index;
2159 }
2160
2161
2162 /* prepare a new audio buffer */
2163 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2164 {
2165     VideoState *is = opaque;
2166     int audio_size, len1;
2167     double pts;
2168
2169     audio_callback_time = av_gettime();
2170
2171     while (len > 0) {
2172         if (is->audio_buf_index >= is->audio_buf_size) {
2173            audio_size = audio_decode_frame(is, &pts);
2174            if (audio_size < 0) {
2175                 /* if error, just output silence */
2176                is->audio_buf = is->audio_buf1;
2177                is->audio_buf_size = 1024;
2178                memset(is->audio_buf, 0, is->audio_buf_size);
2179            } else {
2180                if (is->show_audio)
2181                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2182                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2183                                               pts);
2184                is->audio_buf_size = audio_size;
2185            }
2186            is->audio_buf_index = 0;
2187         }
2188         len1 = is->audio_buf_size - is->audio_buf_index;
2189         if (len1 > len)
2190             len1 = len;
2191         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2192         len -= len1;
2193         stream += len1;
2194         is->audio_buf_index += len1;
2195     }
2196 }
2197
2198 /* open a given stream. Return 0 if OK */
2199 static int stream_component_open(VideoState *is, int stream_index)
2200 {
2201     AVFormatContext *ic = is->ic;
2202     AVCodecContext *avctx;
2203     AVCodec *codec;
2204     SDL_AudioSpec wanted_spec, spec;
2205
2206     if (stream_index < 0 || stream_index >= ic->nb_streams)
2207         return -1;
2208     avctx = ic->streams[stream_index]->codec;
2209
2210     /* prepare audio output */
2211     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2212         if (avctx->channels > 0) {
2213             avctx->request_channels = FFMIN(2, avctx->channels);
2214         } else {
2215             avctx->request_channels = 2;
2216         }
2217     }
2218
2219     codec = avcodec_find_decoder(avctx->codec_id);
2220     avctx->debug_mv = debug_mv;
2221     avctx->debug = debug;
2222     avctx->workaround_bugs = workaround_bugs;
2223     avctx->lowres = lowres;
2224     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2225     avctx->idct_algo= idct;
2226     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2227     avctx->skip_frame= skip_frame;
2228     avctx->skip_idct= skip_idct;
2229     avctx->skip_loop_filter= skip_loop_filter;
2230     avctx->error_recognition= error_recognition;
2231     avctx->error_concealment= error_concealment;
2232     avctx->thread_count= thread_count;
2233
2234     set_context_opts(avctx, avcodec_opts[avctx->codec_type], 0, codec);
2235
2236     if (!codec ||
2237         avcodec_open(avctx, codec) < 0)
2238         return -1;
2239
2240     /* prepare audio output */
2241     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2242         wanted_spec.freq = avctx->sample_rate;
2243         wanted_spec.format = AUDIO_S16SYS;
2244         wanted_spec.channels = avctx->channels;
2245         wanted_spec.silence = 0;
2246         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2247         wanted_spec.callback = sdl_audio_callback;
2248         wanted_spec.userdata = is;
2249         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2250             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2251             return -1;
2252         }
2253         is->audio_hw_buf_size = spec.size;
2254         is->audio_src_fmt= AV_SAMPLE_FMT_S16;
2255     }
2256
2257     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2258     switch(avctx->codec_type) {
2259     case AVMEDIA_TYPE_AUDIO:
2260         is->audio_stream = stream_index;
2261         is->audio_st = ic->streams[stream_index];
2262         is->audio_buf_size = 0;
2263         is->audio_buf_index = 0;
2264
2265         /* init averaging filter */
2266         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2267         is->audio_diff_avg_count = 0;
2268         /* since we do not have a precise anough audio fifo fullness,
2269            we correct audio sync only if larger than this threshold */
2270         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2271
2272         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2273         packet_queue_init(&is->audioq);
2274         SDL_PauseAudio(0);
2275         break;
2276     case AVMEDIA_TYPE_VIDEO:
2277         is->video_stream = stream_index;
2278         is->video_st = ic->streams[stream_index];
2279
2280 //        is->video_current_pts_time = av_gettime();
2281
2282         packet_queue_init(&is->videoq);
2283         is->video_tid = SDL_CreateThread(video_thread, is);
2284         break;
2285     case AVMEDIA_TYPE_SUBTITLE:
2286         is->subtitle_stream = stream_index;
2287         is->subtitle_st = ic->streams[stream_index];
2288         packet_queue_init(&is->subtitleq);
2289
2290         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2291         break;
2292     default:
2293         break;
2294     }
2295     return 0;
2296 }
2297
2298 static void stream_component_close(VideoState *is, int stream_index)
2299 {
2300     AVFormatContext *ic = is->ic;
2301     AVCodecContext *avctx;
2302
2303     if (stream_index < 0 || stream_index >= ic->nb_streams)
2304         return;
2305     avctx = ic->streams[stream_index]->codec;
2306
2307     switch(avctx->codec_type) {
2308     case AVMEDIA_TYPE_AUDIO:
2309         packet_queue_abort(&is->audioq);
2310
2311         SDL_CloseAudio();
2312
2313         packet_queue_end(&is->audioq);
2314         if (is->reformat_ctx)
2315             av_audio_convert_free(is->reformat_ctx);
2316         is->reformat_ctx = NULL;
2317         break;
2318     case AVMEDIA_TYPE_VIDEO:
2319         packet_queue_abort(&is->videoq);
2320
2321         /* note: we also signal this mutex to make sure we deblock the
2322            video thread in all cases */
2323         SDL_LockMutex(is->pictq_mutex);
2324         SDL_CondSignal(is->pictq_cond);
2325         SDL_UnlockMutex(is->pictq_mutex);
2326
2327         SDL_WaitThread(is->video_tid, NULL);
2328
2329         packet_queue_end(&is->videoq);
2330         break;
2331     case AVMEDIA_TYPE_SUBTITLE:
2332         packet_queue_abort(&is->subtitleq);
2333
2334         /* note: we also signal this mutex to make sure we deblock the
2335            video thread in all cases */
2336         SDL_LockMutex(is->subpq_mutex);
2337         is->subtitle_stream_changed = 1;
2338
2339         SDL_CondSignal(is->subpq_cond);
2340         SDL_UnlockMutex(is->subpq_mutex);
2341
2342         SDL_WaitThread(is->subtitle_tid, NULL);
2343
2344         packet_queue_end(&is->subtitleq);
2345         break;
2346     default:
2347         break;
2348     }
2349
2350     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2351     avcodec_close(avctx);
2352     switch(avctx->codec_type) {
2353     case AVMEDIA_TYPE_AUDIO:
2354         is->audio_st = NULL;
2355         is->audio_stream = -1;
2356         break;
2357     case AVMEDIA_TYPE_VIDEO:
2358         is->video_st = NULL;
2359         is->video_stream = -1;
2360         break;
2361     case AVMEDIA_TYPE_SUBTITLE:
2362         is->subtitle_st = NULL;
2363         is->subtitle_stream = -1;
2364         break;
2365     default:
2366         break;
2367     }
2368 }
2369
2370 /* since we have only one decoding thread, we can use a global
2371    variable instead of a thread local variable */
2372 static VideoState *global_video_state;
2373
2374 static int decode_interrupt_cb(void)
2375 {
2376     return (global_video_state && global_video_state->abort_request);
2377 }
2378
2379 /* this thread gets the stream from the disk or the network */
2380 static int decode_thread(void *arg)
2381 {
2382     VideoState *is = arg;
2383     AVFormatContext *ic;
2384     int err, i, ret;
2385     int st_index[AVMEDIA_TYPE_NB];
2386     AVPacket pkt1, *pkt = &pkt1;
2387     AVFormatParameters params, *ap = &params;
2388     int eof=0;
2389     int pkt_in_play_range = 0;
2390
2391     ic = avformat_alloc_context();
2392
2393     memset(st_index, -1, sizeof(st_index));
2394     is->video_stream = -1;
2395     is->audio_stream = -1;
2396     is->subtitle_stream = -1;
2397
2398     global_video_state = is;
2399     avio_set_interrupt_cb(decode_interrupt_cb);
2400
2401     memset(ap, 0, sizeof(*ap));
2402
2403     ap->prealloced_context = 1;
2404     ap->width = frame_width;
2405     ap->height= frame_height;
2406     ap->time_base= (AVRational){1, 25};
2407     ap->pix_fmt = frame_pix_fmt;
2408
2409     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
2410
2411     err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
2412     if (err < 0) {
2413         print_error(is->filename, err);
2414         ret = -1;
2415         goto fail;
2416     }
2417     is->ic = ic;
2418
2419     if(genpts)
2420         ic->flags |= AVFMT_FLAG_GENPTS;
2421
2422     err = av_find_stream_info(ic);
2423     if (err < 0) {
2424         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2425         ret = -1;
2426         goto fail;
2427     }
2428     if(ic->pb)
2429         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2430
2431     if(seek_by_bytes<0)
2432         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2433
2434     /* if seeking requested, we execute it */
2435     if (start_time != AV_NOPTS_VALUE) {
2436         int64_t timestamp;
2437
2438         timestamp = start_time;
2439         /* add the stream start time */
2440         if (ic->start_time != AV_NOPTS_VALUE)
2441             timestamp += ic->start_time;
2442         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2443         if (ret < 0) {
2444             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2445                     is->filename, (double)timestamp / AV_TIME_BASE);
2446         }
2447     }
2448
2449     for (i = 0; i < ic->nb_streams; i++)
2450         ic->streams[i]->discard = AVDISCARD_ALL;
2451     if (!video_disable)
2452         st_index[AVMEDIA_TYPE_VIDEO] =
2453             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2454                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2455     if (!audio_disable)
2456         st_index[AVMEDIA_TYPE_AUDIO] =
2457             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2458                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2459                                 st_index[AVMEDIA_TYPE_VIDEO],
2460                                 NULL, 0);
2461     if (!video_disable)
2462         st_index[AVMEDIA_TYPE_SUBTITLE] =
2463             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2464                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2465                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2466                                  st_index[AVMEDIA_TYPE_AUDIO] :
2467                                  st_index[AVMEDIA_TYPE_VIDEO]),
2468                                 NULL, 0);
2469     if (show_status) {
2470         av_dump_format(ic, 0, is->filename, 0);
2471     }
2472
2473     /* open the streams */
2474     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2475         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2476     }
2477
2478     ret=-1;
2479     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2480         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2481     }
2482     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2483     if(ret<0) {
2484         if (!display_disable)
2485             is->show_audio = 2;
2486     }
2487
2488     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2489         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2490     }
2491
2492     if (is->video_stream < 0 && is->audio_stream < 0) {
2493         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2494         ret = -1;
2495         goto fail;
2496     }
2497
2498     for(;;) {
2499         if (is->abort_request)
2500             break;
2501         if (is->paused != is->last_paused) {
2502             is->last_paused = is->paused;
2503             if (is->paused)
2504                 is->read_pause_return= av_read_pause(ic);
2505             else
2506                 av_read_play(ic);
2507         }
2508 #if CONFIG_RTSP_DEMUXER
2509         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2510             /* wait 10 ms to avoid trying to get another packet */
2511             /* XXX: horrible */
2512             SDL_Delay(10);
2513             continue;
2514         }
2515 #endif
2516         if (is->seek_req) {
2517             int64_t seek_target= is->seek_pos;
2518             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2519             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2520 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2521 //      of the seek_pos/seek_rel variables
2522
2523             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2524             if (ret < 0) {
2525                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2526             }else{
2527                 if (is->audio_stream >= 0) {
2528                     packet_queue_flush(&is->audioq);
2529                     packet_queue_put(&is->audioq, &flush_pkt);
2530                 }
2531                 if (is->subtitle_stream >= 0) {
2532                     packet_queue_flush(&is->subtitleq);
2533                     packet_queue_put(&is->subtitleq, &flush_pkt);
2534                 }
2535                 if (is->video_stream >= 0) {
2536                     packet_queue_flush(&is->videoq);
2537                     packet_queue_put(&is->videoq, &flush_pkt);
2538                 }
2539             }
2540             is->seek_req = 0;
2541             eof= 0;
2542         }
2543
2544         /* if the queue are full, no need to read more */
2545         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2546             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2547                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2548                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2549             /* wait 10 ms */
2550             SDL_Delay(10);
2551             continue;
2552         }
2553         if(eof) {
2554             if(is->video_stream >= 0){
2555                 av_init_packet(pkt);
2556                 pkt->data=NULL;
2557                 pkt->size=0;
2558                 pkt->stream_index= is->video_stream;
2559                 packet_queue_put(&is->videoq, pkt);
2560             }
2561             SDL_Delay(10);
2562             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2563                 if(loop!=1 && (!loop || --loop)){
2564                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2565                 }else if(autoexit){
2566                     ret=AVERROR_EOF;
2567                     goto fail;
2568                 }
2569             }
2570             eof=0;
2571             continue;
2572         }
2573         ret = av_read_frame(ic, pkt);
2574         if (ret < 0) {
2575             if (ret == AVERROR_EOF || url_feof(ic->pb))
2576                 eof=1;
2577             if (ic->pb && ic->pb->error)
2578                 break;
2579             SDL_Delay(100); /* wait for user event */
2580             continue;
2581         }
2582         /* check if packet is in play range specified by user, then queue, otherwise discard */
2583         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2584                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2585                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2586                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2587                 <= ((double)duration/1000000);
2588         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2589             packet_queue_put(&is->audioq, pkt);
2590         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2591             packet_queue_put(&is->videoq, pkt);
2592         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2593             packet_queue_put(&is->subtitleq, pkt);
2594         } else {
2595             av_free_packet(pkt);
2596         }
2597     }
2598     /* wait until the end */
2599     while (!is->abort_request) {
2600         SDL_Delay(100);
2601     }
2602
2603     ret = 0;
2604  fail:
2605     /* disable interrupting */
2606     global_video_state = NULL;
2607
2608     /* close each stream */
2609     if (is->audio_stream >= 0)
2610         stream_component_close(is, is->audio_stream);
2611     if (is->video_stream >= 0)
2612         stream_component_close(is, is->video_stream);
2613     if (is->subtitle_stream >= 0)
2614         stream_component_close(is, is->subtitle_stream);
2615     if (is->ic) {
2616         av_close_input_file(is->ic);
2617         is->ic = NULL; /* safety */
2618     }
2619     avio_set_interrupt_cb(NULL);
2620
2621     if (ret != 0) {
2622         SDL_Event event;
2623
2624         event.type = FF_QUIT_EVENT;
2625         event.user.data1 = is;
2626         SDL_PushEvent(&event);
2627     }
2628     return 0;
2629 }
2630
2631 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2632 {
2633     VideoState *is;
2634
2635     is = av_mallocz(sizeof(VideoState));
2636     if (!is)
2637         return NULL;
2638     av_strlcpy(is->filename, filename, sizeof(is->filename));
2639     is->iformat = iformat;
2640     is->ytop = 0;
2641     is->xleft = 0;
2642
2643     /* start video display */
2644     is->pictq_mutex = SDL_CreateMutex();
2645     is->pictq_cond = SDL_CreateCond();
2646
2647     is->subpq_mutex = SDL_CreateMutex();
2648     is->subpq_cond = SDL_CreateCond();
2649
2650     is->av_sync_type = av_sync_type;
2651     is->parse_tid = SDL_CreateThread(decode_thread, is);
2652     if (!is->parse_tid) {
2653         av_free(is);
2654         return NULL;
2655     }
2656     return is;
2657 }
2658
2659 static void stream_cycle_channel(VideoState *is, int codec_type)
2660 {
2661     AVFormatContext *ic = is->ic;
2662     int start_index, stream_index;
2663     AVStream *st;
2664
2665     if (codec_type == AVMEDIA_TYPE_VIDEO)
2666         start_index = is->video_stream;
2667     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2668         start_index = is->audio_stream;
2669     else
2670         start_index = is->subtitle_stream;
2671     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2672         return;
2673     stream_index = start_index;
2674     for(;;) {
2675         if (++stream_index >= is->ic->nb_streams)
2676         {
2677             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2678             {
2679                 stream_index = -1;
2680                 goto the_end;
2681             } else
2682                 stream_index = 0;
2683         }
2684         if (stream_index == start_index)
2685             return;
2686         st = ic->streams[stream_index];
2687         if (st->codec->codec_type == codec_type) {
2688             /* check that parameters are OK */
2689             switch(codec_type) {
2690             case AVMEDIA_TYPE_AUDIO:
2691                 if (st->codec->sample_rate != 0 &&
2692                     st->codec->channels != 0)
2693                     goto the_end;
2694                 break;
2695             case AVMEDIA_TYPE_VIDEO:
2696             case AVMEDIA_TYPE_SUBTITLE:
2697                 goto the_end;
2698             default:
2699                 break;
2700             }
2701         }
2702     }
2703  the_end:
2704     stream_component_close(is, start_index);
2705     stream_component_open(is, stream_index);
2706 }
2707
2708
2709 static void toggle_full_screen(void)
2710 {
2711     is_full_screen = !is_full_screen;
2712     if (!fs_screen_width) {
2713         /* use default SDL method */
2714 //        SDL_WM_ToggleFullScreen(screen);
2715     }
2716     video_open(cur_stream);
2717 }
2718
2719 static void toggle_pause(void)
2720 {
2721     if (cur_stream)
2722         stream_pause(cur_stream);
2723     step = 0;
2724 }
2725
2726 static void step_to_next_frame(void)
2727 {
2728     if (cur_stream) {
2729         /* if the stream is paused unpause it, then step */
2730         if (cur_stream->paused)
2731             stream_pause(cur_stream);
2732     }
2733     step = 1;
2734 }
2735
2736 static void toggle_audio_display(void)
2737 {
2738     if (cur_stream) {
2739         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2740         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2741         fill_rectangle(screen,
2742                     cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2743                     bgcolor);
2744         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2745     }
2746 }
2747
2748 /* handle an event sent by the GUI */
2749 static void event_loop(void)
2750 {
2751     SDL_Event event;
2752     double incr, pos, frac;
2753
2754     for(;;) {
2755         double x;
2756         SDL_WaitEvent(&event);
2757         switch(event.type) {
2758         case SDL_KEYDOWN:
2759             if (exit_on_keydown) {
2760                 do_exit();
2761                 break;
2762             }
2763             switch(event.key.keysym.sym) {
2764             case SDLK_ESCAPE:
2765             case SDLK_q:
2766                 do_exit();
2767                 break;
2768             case SDLK_f:
2769                 toggle_full_screen();
2770                 break;
2771             case SDLK_p:
2772             case SDLK_SPACE:
2773                 toggle_pause();
2774                 break;
2775             case SDLK_s: //S: Step to next frame
2776                 step_to_next_frame();
2777                 break;
2778             case SDLK_a:
2779                 if (cur_stream)
2780                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2781                 break;
2782             case SDLK_v:
2783                 if (cur_stream)
2784                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2785                 break;
2786             case SDLK_t:
2787                 if (cur_stream)
2788                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2789                 break;
2790             case SDLK_w:
2791                 toggle_audio_display();
2792                 break;
2793             case SDLK_LEFT:
2794                 incr = -10.0;
2795                 goto do_seek;
2796             case SDLK_RIGHT:
2797                 incr = 10.0;
2798                 goto do_seek;
2799             case SDLK_UP:
2800                 incr = 60.0;
2801                 goto do_seek;
2802             case SDLK_DOWN:
2803                 incr = -60.0;
2804             do_seek:
2805                 if (cur_stream) {
2806                     if (seek_by_bytes) {
2807                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2808                             pos= cur_stream->video_current_pos;
2809                         }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2810                             pos= cur_stream->audio_pkt.pos;
2811                         }else
2812                             pos = avio_tell(cur_stream->ic->pb);
2813                         if (cur_stream->ic->bit_rate)
2814                             incr *= cur_stream->ic->bit_rate / 8.0;
2815                         else
2816                             incr *= 180000.0;
2817                         pos += incr;
2818                         stream_seek(cur_stream, pos, incr, 1);
2819                     } else {
2820                         pos = get_master_clock(cur_stream);
2821                         pos += incr;
2822                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2823                     }
2824                 }
2825                 break;
2826             default:
2827                 break;
2828             }
2829             break;
2830         case SDL_MOUSEBUTTONDOWN:
2831             if (exit_on_mousedown) {
2832                 do_exit();
2833                 break;
2834             }
2835         case SDL_MOUSEMOTION:
2836             if(event.type ==SDL_MOUSEBUTTONDOWN){
2837                 x= event.button.x;
2838             }else{
2839                 if(event.motion.state != SDL_PRESSED)
2840                     break;
2841                 x= event.motion.x;
2842             }
2843             if (cur_stream) {
2844                 if(seek_by_bytes || cur_stream->ic->duration<=0){
2845                     uint64_t size=  avio_size(cur_stream->ic->pb);
2846                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2847                 }else{
2848                     int64_t ts;
2849                     int ns, hh, mm, ss;
2850                     int tns, thh, tmm, tss;
2851                     tns = cur_stream->ic->duration/1000000LL;
2852                     thh = tns/3600;
2853                     tmm = (tns%3600)/60;
2854                     tss = (tns%60);
2855                     frac = x/cur_stream->width;
2856                     ns = frac*tns;
2857                     hh = ns/3600;
2858                     mm = (ns%3600)/60;
2859                     ss = (ns%60);
2860                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2861                             hh, mm, ss, thh, tmm, tss);
2862                     ts = frac*cur_stream->ic->duration;
2863                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2864                         ts += cur_stream->ic->start_time;
2865                     stream_seek(cur_stream, ts, 0, 0);
2866                 }
2867             }
2868             break;
2869         case SDL_VIDEORESIZE:
2870             if (cur_stream) {
2871                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2872                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2873                 screen_width = cur_stream->width = event.resize.w;
2874                 screen_height= cur_stream->height= event.resize.h;
2875             }
2876             break;
2877         case SDL_QUIT:
2878         case FF_QUIT_EVENT:
2879             do_exit();
2880             break;
2881         case FF_ALLOC_EVENT:
2882             video_open(event.user.data1);
2883             alloc_picture(event.user.data1);
2884             break;
2885         case FF_REFRESH_EVENT:
2886             video_refresh_timer(event.user.data1);
2887             cur_stream->refresh=0;
2888             break;
2889         default:
2890             break;
2891         }
2892     }
2893 }
2894
2895 static void opt_frame_size(const char *arg)
2896 {
2897     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2898         fprintf(stderr, "Incorrect frame size\n");
2899         exit(1);
2900     }
2901     if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2902         fprintf(stderr, "Frame size must be a multiple of 2\n");
2903         exit(1);
2904     }
2905 }
2906
2907 static int opt_width(const char *opt, const char *arg)
2908 {
2909     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2910     return 0;
2911 }
2912
2913 static int opt_height(const char *opt, const char *arg)
2914 {
2915     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2916     return 0;
2917 }
2918
2919 static void opt_format(const char *arg)
2920 {
2921     file_iformat = av_find_input_format(arg);
2922     if (!file_iformat) {
2923         fprintf(stderr, "Unknown input format: %s\n", arg);
2924         exit(1);
2925     }
2926 }
2927
2928 static void opt_frame_pix_fmt(const char *arg)
2929 {
2930     frame_pix_fmt = av_get_pix_fmt(arg);
2931 }
2932
2933 static int opt_sync(const char *opt, const char *arg)
2934 {
2935     if (!strcmp(arg, "audio"))
2936         av_sync_type = AV_SYNC_AUDIO_MASTER;
2937     else if (!strcmp(arg, "video"))
2938         av_sync_type = AV_SYNC_VIDEO_MASTER;
2939     else if (!strcmp(arg, "ext"))
2940         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2941     else {
2942         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2943         exit(1);
2944     }
2945     return 0;
2946 }
2947
2948 static int opt_seek(const char *opt, const char *arg)
2949 {
2950     start_time = parse_time_or_die(opt, arg, 1);
2951     return 0;
2952 }
2953
2954 static int opt_duration(const char *opt, const char *arg)
2955 {
2956     duration = parse_time_or_die(opt, arg, 1);
2957     return 0;
2958 }
2959
2960 static int opt_debug(const char *opt, const char *arg)
2961 {
2962     av_log_set_level(99);
2963     debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2964     return 0;
2965 }
2966
2967 static int opt_vismv(const char *opt, const char *arg)
2968 {
2969     debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2970     return 0;
2971 }
2972
2973 static int opt_thread_count(const char *opt, const char *arg)
2974 {
2975     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2976 #if !HAVE_THREADS
2977     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2978 #endif
2979     return 0;
2980 }
2981
2982 static const OptionDef options[] = {
2983 #include "cmdutils_common_opts.h"
2984     { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
2985     { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
2986     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2987     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2988     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2989     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2990     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
2991     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
2992     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
2993     { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2994     { "t", HAS_ARG | OPT_FUNC2, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
2995     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
2996     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2997     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2998     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2999     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
3000     { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
3001     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
3002     { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
3003     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
3004     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
3005     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3006     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
3007     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
3008     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
3009     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
3010     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
3011     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
3012     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
3013     { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
3014     { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
3015     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
3016     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_keydown}, "exit on key down", "" },
3017     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_mousedown}, "exit on mouse down", "" },
3018     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
3019     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
3020     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
3021 #if CONFIG_AVFILTER
3022     { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
3023 #endif
3024     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
3025     { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
3026     { "i", OPT_DUMMY, {NULL}, "ffmpeg compatibility dummy option", ""},
3027     { NULL, },
3028 };
3029
3030 static void show_usage(void)
3031 {
3032     printf("Simple media player\n");
3033     printf("usage: ffplay [options] input_file\n");
3034     printf("\n");
3035 }
3036
3037 static void show_help(void)
3038 {
3039     av_log_set_callback(log_callback_help);
3040     show_usage();
3041     show_help_options(options, "Main options:\n",
3042                       OPT_EXPERT, 0);
3043     show_help_options(options, "\nAdvanced options:\n",
3044                       OPT_EXPERT, OPT_EXPERT);
3045     printf("\n");
3046     av_opt_show2(avcodec_opts[0], NULL,
3047                  AV_OPT_FLAG_DECODING_PARAM, 0);
3048     printf("\n");
3049     av_opt_show2(avformat_opts, NULL,
3050                  AV_OPT_FLAG_DECODING_PARAM, 0);
3051 #if !CONFIG_AVFILTER
3052     printf("\n");
3053     av_opt_show2(sws_opts, NULL,
3054                  AV_OPT_FLAG_ENCODING_PARAM, 0);
3055 #endif
3056     printf("\nWhile playing:\n"
3057            "q, ESC              quit\n"
3058            "f                   toggle full screen\n"
3059            "p, SPC              pause\n"
3060            "a                   cycle audio channel\n"
3061            "v                   cycle video channel\n"
3062            "t                   cycle subtitle channel\n"
3063            "w                   show audio waves\n"
3064            "s                   activate frame-step mode\n"
3065            "left/right          seek backward/forward 10 seconds\n"
3066            "down/up             seek backward/forward 1 minute\n"
3067            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3068            );
3069 }
3070
3071 static void opt_input_file(const char *filename)
3072 {
3073     if (input_filename) {
3074         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3075                 filename, input_filename);
3076         exit(1);
3077     }
3078     if (!strcmp(filename, "-"))
3079         filename = "pipe:";
3080     input_filename = filename;
3081 }
3082
3083 /* Called from the main */
3084 int main(int argc, char **argv)
3085 {
3086     int flags;
3087
3088     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3089
3090     /* register all codecs, demux and protocols */
3091     avcodec_register_all();
3092 #if CONFIG_AVDEVICE
3093     avdevice_register_all();
3094 #endif
3095 #if CONFIG_AVFILTER
3096     avfilter_register_all();
3097 #endif
3098     av_register_all();
3099
3100     init_opts();
3101
3102     show_banner();
3103
3104     parse_options(argc, argv, options, opt_input_file);
3105
3106     if (!input_filename) {
3107         show_usage();
3108         fprintf(stderr, "An input file must be specified\n");
3109         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffplay'\n");
3110         exit(1);
3111     }
3112
3113     if (display_disable) {
3114         video_disable = 1;
3115     }
3116     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3117 #if !defined(__MINGW32__) && !defined(__APPLE__)
3118     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3119 #endif
3120     if (SDL_Init (flags)) {
3121         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3122         exit(1);
3123     }
3124
3125     if (!display_disable) {
3126 #if HAVE_SDL_VIDEO_SIZE
3127         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3128         fs_screen_width = vi->current_w;
3129         fs_screen_height = vi->current_h;
3130 #endif
3131     }
3132
3133     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3134     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3135     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3136
3137     av_init_packet(&flush_pkt);
3138     flush_pkt.data= "FLUSH";
3139
3140     cur_stream = stream_open(input_filename, file_iformat);
3141
3142     event_loop();
3143
3144     /* never returns */
3145
3146     return 0;
3147 }