Fix auto-scaling.
[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 #include "config.h"
23 #include <inttypes.h>
24 #include <math.h>
25 #include <limits.h>
26 #include "libavutil/avstring.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavformat/avformat.h"
29 #include "libavdevice/avdevice.h"
30 #include "libswscale/swscale.h"
31 #include "libavcodec/audioconvert.h"
32 #include "libavcodec/colorspace.h"
33 #include "libavcodec/opt.h"
34 #include "libavcodec/avfft.h"
35
36 #if CONFIG_AVFILTER
37 # include "libavfilter/avfilter.h"
38 # include "libavfilter/avfiltergraph.h"
39 # include "libavfilter/graphparser.h"
40 #endif
41
42 #include "cmdutils.h"
43
44 #include <SDL.h>
45 #include <SDL_thread.h>
46
47 #ifdef __MINGW32__
48 #undef main /* We don't want SDL to override our main() */
49 #endif
50
51 #include <unistd.h>
52 #include <assert.h>
53
54 const char program_name[] = "FFplay";
55 const int program_birth_year = 2003;
56
57 //#define DEBUG_SYNC
58
59 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
60 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
61 #define MIN_FRAMES 5
62
63 /* SDL audio buffer size, in samples. Should be small to have precise
64    A/V sync as SDL does not have hardware buffer fullness info. */
65 #define SDL_AUDIO_BUFFER_SIZE 1024
66
67 /* no AV sync correction is done if below the AV sync threshold */
68 #define AV_SYNC_THRESHOLD 0.01
69 /* no AV correction is done if too big error */
70 #define AV_NOSYNC_THRESHOLD 10.0
71
72 #define FRAME_SKIP_FACTOR 0.05
73
74 /* maximum audio speed change to get correct sync */
75 #define SAMPLE_CORRECTION_PERCENT_MAX 10
76
77 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
78 #define AUDIO_DIFF_AVG_NB   20
79
80 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
81 #define SAMPLE_ARRAY_SIZE (2*65536)
82
83 static int sws_flags = SWS_BICUBIC;
84
85 typedef struct PacketQueue {
86     AVPacketList *first_pkt, *last_pkt;
87     int nb_packets;
88     int size;
89     int abort_request;
90     SDL_mutex *mutex;
91     SDL_cond *cond;
92 } PacketQueue;
93
94 #define VIDEO_PICTURE_QUEUE_SIZE 2
95 #define SUBPICTURE_QUEUE_SIZE 4
96
97 typedef struct VideoPicture {
98     double pts;                                  ///<presentation time stamp for this picture
99     double target_clock;                         ///<av_gettime() time at which this should be displayed ideally
100     int64_t pos;                                 ///<byte position in file
101     SDL_Overlay *bmp;
102     int width, height; /* source height & width */
103     int allocated;
104     enum PixelFormat pix_fmt;
105
106 #if CONFIG_AVFILTER
107     AVFilterPicRef *picref;
108 #endif
109 } VideoPicture;
110
111 typedef struct SubPicture {
112     double pts; /* presentation time stamp for this picture */
113     AVSubtitle sub;
114 } SubPicture;
115
116 enum {
117     AV_SYNC_AUDIO_MASTER, /* default choice */
118     AV_SYNC_VIDEO_MASTER,
119     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
120 };
121
122 typedef struct VideoState {
123     SDL_Thread *parse_tid;
124     SDL_Thread *video_tid;
125     SDL_Thread *refresh_tid;
126     AVInputFormat *iformat;
127     int no_background;
128     int abort_request;
129     int paused;
130     int last_paused;
131     int seek_req;
132     int seek_flags;
133     int64_t seek_pos;
134     int64_t seek_rel;
135     int read_pause_return;
136     AVFormatContext *ic;
137     int dtg_active_format;
138
139     int audio_stream;
140
141     int av_sync_type;
142     double external_clock; /* external clock base */
143     int64_t external_clock_time;
144
145     double audio_clock;
146     double audio_diff_cum; /* used for AV difference average computation */
147     double audio_diff_avg_coef;
148     double audio_diff_threshold;
149     int audio_diff_avg_count;
150     AVStream *audio_st;
151     PacketQueue audioq;
152     int audio_hw_buf_size;
153     /* samples output by the codec. we reserve more space for avsync
154        compensation */
155     DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
156     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
157     uint8_t *audio_buf;
158     unsigned int audio_buf_size; /* in bytes */
159     int audio_buf_index; /* in bytes */
160     AVPacket audio_pkt_temp;
161     AVPacket audio_pkt;
162     enum SampleFormat audio_src_fmt;
163     AVAudioConvert *reformat_ctx;
164
165     int show_audio; /* if true, display audio samples */
166     int16_t sample_array[SAMPLE_ARRAY_SIZE];
167     int sample_array_index;
168     int last_i_start;
169     RDFTContext *rdft;
170     int rdft_bits;
171     int xpos;
172
173     SDL_Thread *subtitle_tid;
174     int subtitle_stream;
175     int subtitle_stream_changed;
176     AVStream *subtitle_st;
177     PacketQueue subtitleq;
178     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
179     int subpq_size, subpq_rindex, subpq_windex;
180     SDL_mutex *subpq_mutex;
181     SDL_cond *subpq_cond;
182
183     double frame_timer;
184     double frame_last_pts;
185     double frame_last_delay;
186     double video_clock;                          ///<pts of last decoded frame / predicted pts of next decoded frame
187     int video_stream;
188     AVStream *video_st;
189     PacketQueue videoq;
190     double video_current_pts;                    ///<current displayed pts (different from video_clock if frame fifos are used)
191     double video_current_pts_drift;              ///<video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
192     int64_t video_current_pos;                   ///<current displayed file pos
193     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
194     int pictq_size, pictq_rindex, pictq_windex;
195     SDL_mutex *pictq_mutex;
196     SDL_cond *pictq_cond;
197 #if !CONFIG_AVFILTER
198     struct SwsContext *img_convert_ctx;
199 #endif
200
201     //    QETimer *video_timer;
202     char filename[1024];
203     int width, height, xleft, ytop;
204
205     int64_t faulty_pts;
206     int64_t faulty_dts;
207     int64_t last_dts_for_fault_detection;
208     int64_t last_pts_for_fault_detection;
209
210 #if CONFIG_AVFILTER
211     AVFilterContext *out_video_filter;          ///<the last filter in the video chain
212 #endif
213
214     float skip_frames;
215     float skip_frames_index;
216     int refresh;
217 } VideoState;
218
219 static void show_help(void);
220 static int audio_write_get_buf_size(VideoState *is);
221
222 /* options specified by the user */
223 static AVInputFormat *file_iformat;
224 static const char *input_filename;
225 static const char *window_title;
226 static int fs_screen_width;
227 static int fs_screen_height;
228 static int screen_width = 0;
229 static int screen_height = 0;
230 static int frame_width = 0;
231 static int frame_height = 0;
232 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
233 static int audio_disable;
234 static int video_disable;
235 static int wanted_stream[AVMEDIA_TYPE_NB]={
236     [AVMEDIA_TYPE_AUDIO]=-1,
237     [AVMEDIA_TYPE_VIDEO]=-1,
238     [AVMEDIA_TYPE_SUBTITLE]=-1,
239 };
240 static int seek_by_bytes=-1;
241 static int display_disable;
242 static int show_status = 1;
243 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
244 static int64_t start_time = AV_NOPTS_VALUE;
245 static int64_t duration = AV_NOPTS_VALUE;
246 static int debug = 0;
247 static int debug_mv = 0;
248 static int step = 0;
249 static int thread_count = 1;
250 static int workaround_bugs = 1;
251 static int fast = 0;
252 static int genpts = 0;
253 static int lowres = 0;
254 static int idct = FF_IDCT_AUTO;
255 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
256 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
257 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
258 static int error_recognition = FF_ER_CAREFUL;
259 static int error_concealment = 3;
260 static int decoder_reorder_pts= -1;
261 static int autoexit;
262 static int loop=1;
263 static int framedrop=1;
264
265 static int rdftspeed=20;
266 #if CONFIG_AVFILTER
267 static char *vfilters = NULL;
268 #endif
269
270 /* current context */
271 static int is_full_screen;
272 static VideoState *cur_stream;
273 static int64_t audio_callback_time;
274
275 static AVPacket flush_pkt;
276
277 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
278 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
279 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
280
281 static SDL_Surface *screen;
282
283 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
284
285 /* packet queue handling */
286 static void packet_queue_init(PacketQueue *q)
287 {
288     memset(q, 0, sizeof(PacketQueue));
289     q->mutex = SDL_CreateMutex();
290     q->cond = SDL_CreateCond();
291     packet_queue_put(q, &flush_pkt);
292 }
293
294 static void packet_queue_flush(PacketQueue *q)
295 {
296     AVPacketList *pkt, *pkt1;
297
298     SDL_LockMutex(q->mutex);
299     for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
300         pkt1 = pkt->next;
301         av_free_packet(&pkt->pkt);
302         av_freep(&pkt);
303     }
304     q->last_pkt = NULL;
305     q->first_pkt = NULL;
306     q->nb_packets = 0;
307     q->size = 0;
308     SDL_UnlockMutex(q->mutex);
309 }
310
311 static void packet_queue_end(PacketQueue *q)
312 {
313     packet_queue_flush(q);
314     SDL_DestroyMutex(q->mutex);
315     SDL_DestroyCond(q->cond);
316 }
317
318 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
319 {
320     AVPacketList *pkt1;
321
322     /* duplicate the packet */
323     if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
324         return -1;
325
326     pkt1 = av_malloc(sizeof(AVPacketList));
327     if (!pkt1)
328         return -1;
329     pkt1->pkt = *pkt;
330     pkt1->next = NULL;
331
332
333     SDL_LockMutex(q->mutex);
334
335     if (!q->last_pkt)
336
337         q->first_pkt = pkt1;
338     else
339         q->last_pkt->next = pkt1;
340     q->last_pkt = pkt1;
341     q->nb_packets++;
342     q->size += pkt1->pkt.size + sizeof(*pkt1);
343     /* XXX: should duplicate packet data in DV case */
344     SDL_CondSignal(q->cond);
345
346     SDL_UnlockMutex(q->mutex);
347     return 0;
348 }
349
350 static void packet_queue_abort(PacketQueue *q)
351 {
352     SDL_LockMutex(q->mutex);
353
354     q->abort_request = 1;
355
356     SDL_CondSignal(q->cond);
357
358     SDL_UnlockMutex(q->mutex);
359 }
360
361 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
362 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
363 {
364     AVPacketList *pkt1;
365     int ret;
366
367     SDL_LockMutex(q->mutex);
368
369     for(;;) {
370         if (q->abort_request) {
371             ret = -1;
372             break;
373         }
374
375         pkt1 = q->first_pkt;
376         if (pkt1) {
377             q->first_pkt = pkt1->next;
378             if (!q->first_pkt)
379                 q->last_pkt = NULL;
380             q->nb_packets--;
381             q->size -= pkt1->pkt.size + sizeof(*pkt1);
382             *pkt = pkt1->pkt;
383             av_free(pkt1);
384             ret = 1;
385             break;
386         } else if (!block) {
387             ret = 0;
388             break;
389         } else {
390             SDL_CondWait(q->cond, q->mutex);
391         }
392     }
393     SDL_UnlockMutex(q->mutex);
394     return ret;
395 }
396
397 static inline void fill_rectangle(SDL_Surface *screen,
398                                   int x, int y, int w, int h, int color)
399 {
400     SDL_Rect rect;
401     rect.x = x;
402     rect.y = y;
403     rect.w = w;
404     rect.h = h;
405     SDL_FillRect(screen, &rect, color);
406 }
407
408 #if 0
409 /* draw only the border of a rectangle */
410 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
411 {
412     int w1, w2, h1, h2;
413
414     /* fill the background */
415     w1 = x;
416     if (w1 < 0)
417         w1 = 0;
418     w2 = s->width - (x + w);
419     if (w2 < 0)
420         w2 = 0;
421     h1 = y;
422     if (h1 < 0)
423         h1 = 0;
424     h2 = s->height - (y + h);
425     if (h2 < 0)
426         h2 = 0;
427     fill_rectangle(screen,
428                    s->xleft, s->ytop,
429                    w1, s->height,
430                    color);
431     fill_rectangle(screen,
432                    s->xleft + s->width - w2, s->ytop,
433                    w2, s->height,
434                    color);
435     fill_rectangle(screen,
436                    s->xleft + w1, s->ytop,
437                    s->width - w1 - w2, h1,
438                    color);
439     fill_rectangle(screen,
440                    s->xleft + w1, s->ytop + s->height - h2,
441                    s->width - w1 - w2, h2,
442                    color);
443 }
444 #endif
445
446 #define ALPHA_BLEND(a, oldp, newp, s)\
447 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
448
449 #define RGBA_IN(r, g, b, a, s)\
450 {\
451     unsigned int v = ((const uint32_t *)(s))[0];\
452     a = (v >> 24) & 0xff;\
453     r = (v >> 16) & 0xff;\
454     g = (v >> 8) & 0xff;\
455     b = v & 0xff;\
456 }
457
458 #define YUVA_IN(y, u, v, a, s, pal)\
459 {\
460     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
461     a = (val >> 24) & 0xff;\
462     y = (val >> 16) & 0xff;\
463     u = (val >> 8) & 0xff;\
464     v = val & 0xff;\
465 }
466
467 #define YUVA_OUT(d, y, u, v, a)\
468 {\
469     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
470 }
471
472
473 #define BPP 1
474
475 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
476 {
477     int wrap, wrap3, width2, skip2;
478     int y, u, v, a, u1, v1, a1, w, h;
479     uint8_t *lum, *cb, *cr;
480     const uint8_t *p;
481     const uint32_t *pal;
482     int dstx, dsty, dstw, dsth;
483
484     dstw = av_clip(rect->w, 0, imgw);
485     dsth = av_clip(rect->h, 0, imgh);
486     dstx = av_clip(rect->x, 0, imgw - dstw);
487     dsty = av_clip(rect->y, 0, imgh - dsth);
488     lum = dst->data[0] + dsty * dst->linesize[0];
489     cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
490     cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
491
492     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
493     skip2 = dstx >> 1;
494     wrap = dst->linesize[0];
495     wrap3 = rect->pict.linesize[0];
496     p = rect->pict.data[0];
497     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
498
499     if (dsty & 1) {
500         lum += dstx;
501         cb += skip2;
502         cr += skip2;
503
504         if (dstx & 1) {
505             YUVA_IN(y, u, v, a, p, pal);
506             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
507             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
508             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
509             cb++;
510             cr++;
511             lum++;
512             p += BPP;
513         }
514         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
515             YUVA_IN(y, u, v, a, p, pal);
516             u1 = u;
517             v1 = v;
518             a1 = a;
519             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
520
521             YUVA_IN(y, u, v, a, p + BPP, pal);
522             u1 += u;
523             v1 += v;
524             a1 += a;
525             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
526             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
527             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
528             cb++;
529             cr++;
530             p += 2 * BPP;
531             lum += 2;
532         }
533         if (w) {
534             YUVA_IN(y, u, v, a, p, pal);
535             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
536             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
537             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
538             p++;
539             lum++;
540         }
541         p += wrap3 - dstw * BPP;
542         lum += wrap - dstw - dstx;
543         cb += dst->linesize[1] - width2 - skip2;
544         cr += dst->linesize[2] - width2 - skip2;
545     }
546     for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
547         lum += dstx;
548         cb += skip2;
549         cr += skip2;
550
551         if (dstx & 1) {
552             YUVA_IN(y, u, v, a, p, pal);
553             u1 = u;
554             v1 = v;
555             a1 = a;
556             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
557             p += wrap3;
558             lum += wrap;
559             YUVA_IN(y, u, v, a, p, pal);
560             u1 += u;
561             v1 += v;
562             a1 += a;
563             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
564             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
565             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
566             cb++;
567             cr++;
568             p += -wrap3 + BPP;
569             lum += -wrap + 1;
570         }
571         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
572             YUVA_IN(y, u, v, a, p, pal);
573             u1 = u;
574             v1 = v;
575             a1 = a;
576             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
577
578             YUVA_IN(y, u, v, a, p + BPP, pal);
579             u1 += u;
580             v1 += v;
581             a1 += a;
582             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
583             p += wrap3;
584             lum += wrap;
585
586             YUVA_IN(y, u, v, a, p, pal);
587             u1 += u;
588             v1 += v;
589             a1 += a;
590             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
591
592             YUVA_IN(y, u, v, a, p + BPP, pal);
593             u1 += u;
594             v1 += v;
595             a1 += a;
596             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
597
598             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
599             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
600
601             cb++;
602             cr++;
603             p += -wrap3 + 2 * BPP;
604             lum += -wrap + 2;
605         }
606         if (w) {
607             YUVA_IN(y, u, v, a, p, pal);
608             u1 = u;
609             v1 = v;
610             a1 = a;
611             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
612             p += wrap3;
613             lum += wrap;
614             YUVA_IN(y, u, v, a, p, pal);
615             u1 += u;
616             v1 += v;
617             a1 += a;
618             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
619             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
620             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
621             cb++;
622             cr++;
623             p += -wrap3 + BPP;
624             lum += -wrap + 1;
625         }
626         p += wrap3 + (wrap3 - dstw * BPP);
627         lum += wrap + (wrap - dstw - dstx);
628         cb += dst->linesize[1] - width2 - skip2;
629         cr += dst->linesize[2] - width2 - skip2;
630     }
631     /* handle odd height */
632     if (h) {
633         lum += dstx;
634         cb += skip2;
635         cr += skip2;
636
637         if (dstx & 1) {
638             YUVA_IN(y, u, v, a, p, pal);
639             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
640             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
641             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
642             cb++;
643             cr++;
644             lum++;
645             p += BPP;
646         }
647         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
648             YUVA_IN(y, u, v, a, p, pal);
649             u1 = u;
650             v1 = v;
651             a1 = a;
652             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
653
654             YUVA_IN(y, u, v, a, p + BPP, pal);
655             u1 += u;
656             v1 += v;
657             a1 += a;
658             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
659             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
660             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
661             cb++;
662             cr++;
663             p += 2 * BPP;
664             lum += 2;
665         }
666         if (w) {
667             YUVA_IN(y, u, v, a, p, pal);
668             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
669             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
670             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
671         }
672     }
673 }
674
675 static void free_subpicture(SubPicture *sp)
676 {
677     int i;
678
679     for (i = 0; i < sp->sub.num_rects; i++)
680     {
681         av_freep(&sp->sub.rects[i]->pict.data[0]);
682         av_freep(&sp->sub.rects[i]->pict.data[1]);
683         av_freep(&sp->sub.rects[i]);
684     }
685
686     av_free(sp->sub.rects);
687
688     memset(&sp->sub, 0, sizeof(AVSubtitle));
689 }
690
691 static void video_image_display(VideoState *is)
692 {
693     VideoPicture *vp;
694     SubPicture *sp;
695     AVPicture pict;
696     float aspect_ratio;
697     int width, height, x, y;
698     SDL_Rect rect;
699     int i;
700
701     vp = &is->pictq[is->pictq_rindex];
702     if (vp->bmp) {
703 #if CONFIG_AVFILTER
704          if (vp->picref->pixel_aspect.num == 0)
705              aspect_ratio = 0;
706          else
707              aspect_ratio = av_q2d(vp->picref->pixel_aspect);
708 #else
709
710         /* XXX: use variable in the frame */
711         if (is->video_st->sample_aspect_ratio.num)
712             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
713         else if (is->video_st->codec->sample_aspect_ratio.num)
714             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
715         else
716             aspect_ratio = 0;
717 #endif
718         if (aspect_ratio <= 0.0)
719             aspect_ratio = 1.0;
720         aspect_ratio *= (float)vp->width / (float)vp->height;
721         /* if an active format is indicated, then it overrides the
722            mpeg format */
723 #if 0
724         if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
725             is->dtg_active_format = is->video_st->codec->dtg_active_format;
726             printf("dtg_active_format=%d\n", is->dtg_active_format);
727         }
728 #endif
729 #if 0
730         switch(is->video_st->codec->dtg_active_format) {
731         case FF_DTG_AFD_SAME:
732         default:
733             /* nothing to do */
734             break;
735         case FF_DTG_AFD_4_3:
736             aspect_ratio = 4.0 / 3.0;
737             break;
738         case FF_DTG_AFD_16_9:
739             aspect_ratio = 16.0 / 9.0;
740             break;
741         case FF_DTG_AFD_14_9:
742             aspect_ratio = 14.0 / 9.0;
743             break;
744         case FF_DTG_AFD_4_3_SP_14_9:
745             aspect_ratio = 14.0 / 9.0;
746             break;
747         case FF_DTG_AFD_16_9_SP_14_9:
748             aspect_ratio = 14.0 / 9.0;
749             break;
750         case FF_DTG_AFD_SP_4_3:
751             aspect_ratio = 4.0 / 3.0;
752             break;
753         }
754 #endif
755
756         if (is->subtitle_st)
757         {
758             if (is->subpq_size > 0)
759             {
760                 sp = &is->subpq[is->subpq_rindex];
761
762                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
763                 {
764                     SDL_LockYUVOverlay (vp->bmp);
765
766                     pict.data[0] = vp->bmp->pixels[0];
767                     pict.data[1] = vp->bmp->pixels[2];
768                     pict.data[2] = vp->bmp->pixels[1];
769
770                     pict.linesize[0] = vp->bmp->pitches[0];
771                     pict.linesize[1] = vp->bmp->pitches[2];
772                     pict.linesize[2] = vp->bmp->pitches[1];
773
774                     for (i = 0; i < sp->sub.num_rects; i++)
775                         blend_subrect(&pict, sp->sub.rects[i],
776                                       vp->bmp->w, vp->bmp->h);
777
778                     SDL_UnlockYUVOverlay (vp->bmp);
779                 }
780             }
781         }
782
783
784         /* XXX: we suppose the screen has a 1.0 pixel ratio */
785         height = is->height;
786         width = ((int)rint(height * aspect_ratio)) & ~1;
787         if (width > is->width) {
788             width = is->width;
789             height = ((int)rint(width / aspect_ratio)) & ~1;
790         }
791         x = (is->width - width) / 2;
792         y = (is->height - height) / 2;
793         if (!is->no_background) {
794             /* fill the background */
795             //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
796         } else {
797             is->no_background = 0;
798         }
799         rect.x = is->xleft + x;
800         rect.y = is->ytop  + y;
801         rect.w = width;
802         rect.h = height;
803         SDL_DisplayYUVOverlay(vp->bmp, &rect);
804     } else {
805 #if 0
806         fill_rectangle(screen,
807                        is->xleft, is->ytop, is->width, is->height,
808                        QERGB(0x00, 0x00, 0x00));
809 #endif
810     }
811 }
812
813 static inline int compute_mod(int a, int b)
814 {
815     a = a % b;
816     if (a >= 0)
817         return a;
818     else
819         return a + b;
820 }
821
822 static void video_audio_display(VideoState *s)
823 {
824     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
825     int ch, channels, h, h2, bgcolor, fgcolor;
826     int16_t time_diff;
827     int rdft_bits, nb_freq;
828
829     for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
830         ;
831     nb_freq= 1<<(rdft_bits-1);
832
833     /* compute display index : center on currently output samples */
834     channels = s->audio_st->codec->channels;
835     nb_display_channels = channels;
836     if (!s->paused) {
837         int data_used= s->show_audio==1 ? s->width : (2*nb_freq);
838         n = 2 * channels;
839         delay = audio_write_get_buf_size(s);
840         delay /= n;
841
842         /* to be more precise, we take into account the time spent since
843            the last buffer computation */
844         if (audio_callback_time) {
845             time_diff = av_gettime() - audio_callback_time;
846             delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
847         }
848
849         delay += 2*data_used;
850         if (delay < data_used)
851             delay = data_used;
852
853         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
854         if(s->show_audio==1){
855             h= INT_MIN;
856             for(i=0; i<1000; i+=channels){
857                 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
858                 int a= s->sample_array[idx];
859                 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
860                 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
861                 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
862                 int score= a-d;
863                 if(h<score && (b^c)<0){
864                     h= score;
865                     i_start= idx;
866                 }
867             }
868         }
869
870         s->last_i_start = i_start;
871     } else {
872         i_start = s->last_i_start;
873     }
874
875     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
876     if(s->show_audio==1){
877         fill_rectangle(screen,
878                        s->xleft, s->ytop, s->width, s->height,
879                        bgcolor);
880
881         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
882
883         /* total height for one channel */
884         h = s->height / nb_display_channels;
885         /* graph height / 2 */
886         h2 = (h * 9) / 20;
887         for(ch = 0;ch < nb_display_channels; ch++) {
888             i = i_start + ch;
889             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
890             for(x = 0; x < s->width; x++) {
891                 y = (s->sample_array[i] * h2) >> 15;
892                 if (y < 0) {
893                     y = -y;
894                     ys = y1 - y;
895                 } else {
896                     ys = y1;
897                 }
898                 fill_rectangle(screen,
899                                s->xleft + x, ys, 1, y,
900                                fgcolor);
901                 i += channels;
902                 if (i >= SAMPLE_ARRAY_SIZE)
903                     i -= SAMPLE_ARRAY_SIZE;
904             }
905         }
906
907         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
908
909         for(ch = 1;ch < nb_display_channels; ch++) {
910             y = s->ytop + ch * h;
911             fill_rectangle(screen,
912                            s->xleft, y, s->width, 1,
913                            fgcolor);
914         }
915         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
916     }else{
917         nb_display_channels= FFMIN(nb_display_channels, 2);
918         if(rdft_bits != s->rdft_bits){
919             av_rdft_end(s->rdft);
920             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
921             s->rdft_bits= rdft_bits;
922         }
923         {
924             FFTSample data[2][2*nb_freq];
925             for(ch = 0;ch < nb_display_channels; ch++) {
926                 i = i_start + ch;
927                 for(x = 0; x < 2*nb_freq; x++) {
928                     double w= (x-nb_freq)*(1.0/nb_freq);
929                     data[ch][x]= s->sample_array[i]*(1.0-w*w);
930                     i += channels;
931                     if (i >= SAMPLE_ARRAY_SIZE)
932                         i -= SAMPLE_ARRAY_SIZE;
933                 }
934                 av_rdft_calc(s->rdft, data[ch]);
935             }
936             //least efficient way to do this, we should of course directly access it but its more than fast enough
937             for(y=0; y<s->height; y++){
938                 double w= 1/sqrt(nb_freq);
939                 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]));
940                 int b= sqrt(w*sqrt(data[1][2*y+0]*data[1][2*y+0] + data[1][2*y+1]*data[1][2*y+1]));
941                 a= FFMIN(a,255);
942                 b= FFMIN(b,255);
943                 fgcolor = SDL_MapRGB(screen->format, a, b, (a+b)/2);
944
945                 fill_rectangle(screen,
946                             s->xpos, s->height-y, 1, 1,
947                             fgcolor);
948             }
949         }
950         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
951         s->xpos++;
952         if(s->xpos >= s->width)
953             s->xpos= s->xleft;
954     }
955 }
956
957 static int video_open(VideoState *is){
958     int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
959     int w,h;
960
961     if(is_full_screen) flags |= SDL_FULLSCREEN;
962     else               flags |= SDL_RESIZABLE;
963
964     if (is_full_screen && fs_screen_width) {
965         w = fs_screen_width;
966         h = fs_screen_height;
967     } else if(!is_full_screen && screen_width){
968         w = screen_width;
969         h = screen_height;
970 #if CONFIG_AVFILTER
971     }else if (is->out_video_filter && is->out_video_filter->inputs[0]){
972         w = is->out_video_filter->inputs[0]->w;
973         h = is->out_video_filter->inputs[0]->h;
974 #else
975     }else if (is->video_st && is->video_st->codec->width){
976         w = is->video_st->codec->width;
977         h = is->video_st->codec->height;
978 #endif
979     } else {
980         w = 640;
981         h = 480;
982     }
983     if(screen && is->width == screen->w && screen->w == w
984        && is->height== screen->h && screen->h == h)
985         return 0;
986
987 #ifndef __APPLE__
988     screen = SDL_SetVideoMode(w, h, 0, flags);
989 #else
990     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
991     screen = SDL_SetVideoMode(w, h, 24, flags);
992 #endif
993     if (!screen) {
994         fprintf(stderr, "SDL: could not set video mode - exiting\n");
995         return -1;
996     }
997     if (!window_title)
998         window_title = input_filename;
999     SDL_WM_SetCaption(window_title, window_title);
1000
1001     is->width = screen->w;
1002     is->height = screen->h;
1003
1004     return 0;
1005 }
1006
1007 /* display the current picture, if any */
1008 static void video_display(VideoState *is)
1009 {
1010     if(!screen)
1011         video_open(cur_stream);
1012     if (is->audio_st && is->show_audio)
1013         video_audio_display(is);
1014     else if (is->video_st)
1015         video_image_display(is);
1016 }
1017
1018 static int refresh_thread(void *opaque)
1019 {
1020     VideoState *is= opaque;
1021     while(!is->abort_request){
1022     SDL_Event event;
1023     event.type = FF_REFRESH_EVENT;
1024     event.user.data1 = opaque;
1025         if(!is->refresh){
1026             is->refresh=1;
1027     SDL_PushEvent(&event);
1028         }
1029         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
1030     }
1031     return 0;
1032 }
1033
1034 /* get the current audio clock value */
1035 static double get_audio_clock(VideoState *is)
1036 {
1037     double pts;
1038     int hw_buf_size, bytes_per_sec;
1039     pts = is->audio_clock;
1040     hw_buf_size = audio_write_get_buf_size(is);
1041     bytes_per_sec = 0;
1042     if (is->audio_st) {
1043         bytes_per_sec = is->audio_st->codec->sample_rate *
1044             2 * is->audio_st->codec->channels;
1045     }
1046     if (bytes_per_sec)
1047         pts -= (double)hw_buf_size / bytes_per_sec;
1048     return pts;
1049 }
1050
1051 /* get the current video clock value */
1052 static double get_video_clock(VideoState *is)
1053 {
1054     if (is->paused) {
1055         return is->video_current_pts;
1056     } else {
1057         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1058     }
1059 }
1060
1061 /* get the current external clock value */
1062 static double get_external_clock(VideoState *is)
1063 {
1064     int64_t ti;
1065     ti = av_gettime();
1066     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1067 }
1068
1069 /* get the current master clock value */
1070 static double get_master_clock(VideoState *is)
1071 {
1072     double val;
1073
1074     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1075         if (is->video_st)
1076             val = get_video_clock(is);
1077         else
1078             val = get_audio_clock(is);
1079     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1080         if (is->audio_st)
1081             val = get_audio_clock(is);
1082         else
1083             val = get_video_clock(is);
1084     } else {
1085         val = get_external_clock(is);
1086     }
1087     return val;
1088 }
1089
1090 /* seek in the stream */
1091 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1092 {
1093     if (!is->seek_req) {
1094         is->seek_pos = pos;
1095         is->seek_rel = rel;
1096         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1097         if (seek_by_bytes)
1098             is->seek_flags |= AVSEEK_FLAG_BYTE;
1099         is->seek_req = 1;
1100     }
1101 }
1102
1103 /* pause or resume the video */
1104 static void stream_pause(VideoState *is)
1105 {
1106     if (is->paused) {
1107         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1108         if(is->read_pause_return != AVERROR(ENOSYS)){
1109             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1110         }
1111         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1112     }
1113     is->paused = !is->paused;
1114 }
1115
1116 static double compute_target_time(double frame_current_pts, VideoState *is)
1117 {
1118     double delay, sync_threshold, diff;
1119
1120     /* compute nominal delay */
1121     delay = frame_current_pts - is->frame_last_pts;
1122     if (delay <= 0 || delay >= 10.0) {
1123         /* if incorrect delay, use previous one */
1124         delay = is->frame_last_delay;
1125     } else {
1126         is->frame_last_delay = delay;
1127     }
1128     is->frame_last_pts = frame_current_pts;
1129
1130     /* update delay to follow master synchronisation source */
1131     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1132          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1133         /* if video is slave, we try to correct big delays by
1134            duplicating or deleting a frame */
1135         diff = get_video_clock(is) - get_master_clock(is);
1136
1137         /* skip or repeat frame. We take into account the
1138            delay to compute the threshold. I still don't know
1139            if it is the best guess */
1140         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1141         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1142             if (diff <= -sync_threshold)
1143                 delay = 0;
1144             else if (diff >= sync_threshold)
1145                 delay = 2 * delay;
1146         }
1147     }
1148     is->frame_timer += delay;
1149 #if defined(DEBUG_SYNC)
1150     printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1151             delay, actual_delay, frame_current_pts, -diff);
1152 #endif
1153
1154     return is->frame_timer;
1155 }
1156
1157 /* called to display each frame */
1158 static void video_refresh_timer(void *opaque)
1159 {
1160     VideoState *is = opaque;
1161     VideoPicture *vp;
1162
1163     SubPicture *sp, *sp2;
1164
1165     if (is->video_st) {
1166 retry:
1167         if (is->pictq_size == 0) {
1168             //nothing to do, no picture to display in the que
1169         } else {
1170             double time= av_gettime()/1000000.0;
1171             double next_target;
1172             /* dequeue the picture */
1173             vp = &is->pictq[is->pictq_rindex];
1174
1175             if(time < vp->target_clock)
1176                 return;
1177             /* update current video pts */
1178             is->video_current_pts = vp->pts;
1179             is->video_current_pts_drift = is->video_current_pts - time;
1180             is->video_current_pos = vp->pos;
1181             if(is->pictq_size > 1){
1182                 VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
1183                 assert(nextvp->target_clock >= vp->target_clock);
1184                 next_target= nextvp->target_clock;
1185             }else{
1186                 next_target= vp->target_clock + is->video_clock - vp->pts; //FIXME pass durations cleanly
1187             }
1188             if(framedrop && time > next_target){
1189                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1190                 if(is->pictq_size > 1 || time > next_target + 0.5){
1191                     /* update queue size and signal for next picture */
1192                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1193                         is->pictq_rindex = 0;
1194
1195                     SDL_LockMutex(is->pictq_mutex);
1196                     is->pictq_size--;
1197                     SDL_CondSignal(is->pictq_cond);
1198                     SDL_UnlockMutex(is->pictq_mutex);
1199                     goto retry;
1200                 }
1201             }
1202
1203             if(is->subtitle_st) {
1204                 if (is->subtitle_stream_changed) {
1205                     SDL_LockMutex(is->subpq_mutex);
1206
1207                     while (is->subpq_size) {
1208                         free_subpicture(&is->subpq[is->subpq_rindex]);
1209
1210                         /* update queue size and signal for next picture */
1211                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1212                             is->subpq_rindex = 0;
1213
1214                         is->subpq_size--;
1215                     }
1216                     is->subtitle_stream_changed = 0;
1217
1218                     SDL_CondSignal(is->subpq_cond);
1219                     SDL_UnlockMutex(is->subpq_mutex);
1220                 } else {
1221                     if (is->subpq_size > 0) {
1222                         sp = &is->subpq[is->subpq_rindex];
1223
1224                         if (is->subpq_size > 1)
1225                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1226                         else
1227                             sp2 = NULL;
1228
1229                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1230                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1231                         {
1232                             free_subpicture(sp);
1233
1234                             /* update queue size and signal for next picture */
1235                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1236                                 is->subpq_rindex = 0;
1237
1238                             SDL_LockMutex(is->subpq_mutex);
1239                             is->subpq_size--;
1240                             SDL_CondSignal(is->subpq_cond);
1241                             SDL_UnlockMutex(is->subpq_mutex);
1242                         }
1243                     }
1244                 }
1245             }
1246
1247             /* display picture */
1248             video_display(is);
1249
1250             /* update queue size and signal for next picture */
1251             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1252                 is->pictq_rindex = 0;
1253
1254             SDL_LockMutex(is->pictq_mutex);
1255             is->pictq_size--;
1256             SDL_CondSignal(is->pictq_cond);
1257             SDL_UnlockMutex(is->pictq_mutex);
1258         }
1259     } else if (is->audio_st) {
1260         /* draw the next audio frame */
1261
1262         /* if only audio stream, then display the audio bars (better
1263            than nothing, just to test the implementation */
1264
1265         /* display picture */
1266         video_display(is);
1267     }
1268     if (show_status) {
1269         static int64_t last_time;
1270         int64_t cur_time;
1271         int aqsize, vqsize, sqsize;
1272         double av_diff;
1273
1274         cur_time = av_gettime();
1275         if (!last_time || (cur_time - last_time) >= 30000) {
1276             aqsize = 0;
1277             vqsize = 0;
1278             sqsize = 0;
1279             if (is->audio_st)
1280                 aqsize = is->audioq.size;
1281             if (is->video_st)
1282                 vqsize = is->videoq.size;
1283             if (is->subtitle_st)
1284                 sqsize = is->subtitleq.size;
1285             av_diff = 0;
1286             if (is->audio_st && is->video_st)
1287                 av_diff = get_audio_clock(is) - get_video_clock(is);
1288             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1289                    get_master_clock(is), av_diff, FFMAX(is->skip_frames-1, 0), aqsize / 1024, vqsize / 1024, sqsize, is->faulty_dts, is->faulty_pts);
1290             fflush(stdout);
1291             last_time = cur_time;
1292         }
1293     }
1294 }
1295
1296 /* allocate a picture (needs to do that in main thread to avoid
1297    potential locking problems */
1298 static void alloc_picture(void *opaque)
1299 {
1300     VideoState *is = opaque;
1301     VideoPicture *vp;
1302
1303     vp = &is->pictq[is->pictq_windex];
1304
1305     if (vp->bmp)
1306         SDL_FreeYUVOverlay(vp->bmp);
1307
1308 #if CONFIG_AVFILTER
1309     if (vp->picref)
1310         avfilter_unref_pic(vp->picref);
1311     vp->picref = NULL;
1312
1313     vp->width   = is->out_video_filter->inputs[0]->w;
1314     vp->height  = is->out_video_filter->inputs[0]->h;
1315     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1316 #else
1317     vp->width   = is->video_st->codec->width;
1318     vp->height  = is->video_st->codec->height;
1319     vp->pix_fmt = is->video_st->codec->pix_fmt;
1320 #endif
1321
1322     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1323                                    SDL_YV12_OVERLAY,
1324                                    screen);
1325
1326     SDL_LockMutex(is->pictq_mutex);
1327     vp->allocated = 1;
1328     SDL_CondSignal(is->pictq_cond);
1329     SDL_UnlockMutex(is->pictq_mutex);
1330 }
1331
1332 /**
1333  *
1334  * @param pts the dts of the pkt / pts of the frame and guessed if not known
1335  */
1336 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1337 {
1338     VideoPicture *vp;
1339     int dst_pix_fmt;
1340 #if CONFIG_AVFILTER
1341     AVPicture pict_src;
1342 #endif
1343     /* wait until we have space to put a new picture */
1344     SDL_LockMutex(is->pictq_mutex);
1345
1346     if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1347         is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
1348
1349     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1350            !is->videoq.abort_request) {
1351         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1352     }
1353     SDL_UnlockMutex(is->pictq_mutex);
1354
1355     if (is->videoq.abort_request)
1356         return -1;
1357
1358     vp = &is->pictq[is->pictq_windex];
1359
1360     /* alloc or resize hardware picture buffer */
1361     if (!vp->bmp ||
1362 #if CONFIG_AVFILTER
1363         vp->width  != is->out_video_filter->inputs[0]->w ||
1364         vp->height != is->out_video_filter->inputs[0]->h) {
1365 #else
1366         vp->width != is->video_st->codec->width ||
1367         vp->height != is->video_st->codec->height) {
1368 #endif
1369         SDL_Event event;
1370
1371         vp->allocated = 0;
1372
1373         /* the allocation must be done in the main thread to avoid
1374            locking problems */
1375         event.type = FF_ALLOC_EVENT;
1376         event.user.data1 = is;
1377         SDL_PushEvent(&event);
1378
1379         /* wait until the picture is allocated */
1380         SDL_LockMutex(is->pictq_mutex);
1381         while (!vp->allocated && !is->videoq.abort_request) {
1382             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1383         }
1384         SDL_UnlockMutex(is->pictq_mutex);
1385
1386         if (is->videoq.abort_request)
1387             return -1;
1388     }
1389
1390     /* if the frame is not skipped, then display it */
1391     if (vp->bmp) {
1392         AVPicture pict;
1393 #if CONFIG_AVFILTER
1394         if(vp->picref)
1395             avfilter_unref_pic(vp->picref);
1396         vp->picref = src_frame->opaque;
1397 #endif
1398
1399         /* get a pointer on the bitmap */
1400         SDL_LockYUVOverlay (vp->bmp);
1401
1402         dst_pix_fmt = PIX_FMT_YUV420P;
1403         memset(&pict,0,sizeof(AVPicture));
1404         pict.data[0] = vp->bmp->pixels[0];
1405         pict.data[1] = vp->bmp->pixels[2];
1406         pict.data[2] = vp->bmp->pixels[1];
1407
1408         pict.linesize[0] = vp->bmp->pitches[0];
1409         pict.linesize[1] = vp->bmp->pitches[2];
1410         pict.linesize[2] = vp->bmp->pitches[1];
1411
1412 #if CONFIG_AVFILTER
1413         pict_src.data[0] = src_frame->data[0];
1414         pict_src.data[1] = src_frame->data[1];
1415         pict_src.data[2] = src_frame->data[2];
1416
1417         pict_src.linesize[0] = src_frame->linesize[0];
1418         pict_src.linesize[1] = src_frame->linesize[1];
1419         pict_src.linesize[2] = src_frame->linesize[2];
1420
1421         //FIXME use direct rendering
1422         av_picture_copy(&pict, &pict_src,
1423                         vp->pix_fmt, vp->width, vp->height);
1424 #else
1425         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1426         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1427             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1428             dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1429         if (is->img_convert_ctx == NULL) {
1430             fprintf(stderr, "Cannot initialize the conversion context\n");
1431             exit(1);
1432         }
1433         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1434                   0, vp->height, pict.data, pict.linesize);
1435 #endif
1436         /* update the bitmap content */
1437         SDL_UnlockYUVOverlay(vp->bmp);
1438
1439         vp->pts = pts;
1440         vp->pos = pos;
1441
1442         /* now we can update the picture count */
1443         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1444             is->pictq_windex = 0;
1445         SDL_LockMutex(is->pictq_mutex);
1446         vp->target_clock= compute_target_time(vp->pts, is);
1447
1448         is->pictq_size++;
1449         SDL_UnlockMutex(is->pictq_mutex);
1450     }
1451     return 0;
1452 }
1453
1454 /**
1455  * compute the exact PTS for the picture if it is omitted in the stream
1456  * @param pts1 the dts of the pkt / pts of the frame
1457  */
1458 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1459 {
1460     double frame_delay, pts;
1461
1462     pts = pts1;
1463
1464     if (pts != 0) {
1465         /* update video clock with pts, if present */
1466         is->video_clock = pts;
1467     } else {
1468         pts = is->video_clock;
1469     }
1470     /* update video clock for next frame */
1471     frame_delay = av_q2d(is->video_st->codec->time_base);
1472     /* for MPEG2, the frame can be repeated, so we update the
1473        clock accordingly */
1474     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1475     is->video_clock += frame_delay;
1476
1477 #if defined(DEBUG_SYNC) && 0
1478     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1479            av_get_pict_type_char(src_frame->pict_type), pts, pts1);
1480 #endif
1481     return queue_picture(is, src_frame, pts, pos);
1482 }
1483
1484 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1485 {
1486     int len1, got_picture, i;
1487
1488         if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1489             return -1;
1490
1491         if(pkt->data == flush_pkt.data){
1492             avcodec_flush_buffers(is->video_st->codec);
1493
1494             SDL_LockMutex(is->pictq_mutex);
1495             //Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1496             for(i=0; i<VIDEO_PICTURE_QUEUE_SIZE; i++){
1497                 is->pictq[i].target_clock= 0;
1498             }
1499             while (is->pictq_size && !is->videoq.abort_request) {
1500                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1501             }
1502             is->video_current_pos= -1;
1503             SDL_UnlockMutex(is->pictq_mutex);
1504
1505             is->last_dts_for_fault_detection=
1506             is->last_pts_for_fault_detection= INT64_MIN;
1507             is->frame_last_pts= AV_NOPTS_VALUE;
1508             is->frame_last_delay = 0;
1509             is->frame_timer = (double)av_gettime() / 1000000.0;
1510             is->skip_frames= 1;
1511             is->skip_frames_index= 0;
1512             return 0;
1513         }
1514
1515         /* NOTE: ipts is the PTS of the _first_ picture beginning in
1516            this packet, if any */
1517         is->video_st->codec->reordered_opaque= pkt->pts;
1518         len1 = avcodec_decode_video2(is->video_st->codec,
1519                                     frame, &got_picture,
1520                                     pkt);
1521
1522         if (got_picture) {
1523             if(pkt->dts != AV_NOPTS_VALUE){
1524                 is->faulty_dts += pkt->dts <= is->last_dts_for_fault_detection;
1525                 is->last_dts_for_fault_detection= pkt->dts;
1526             }
1527             if(frame->reordered_opaque != AV_NOPTS_VALUE){
1528                 is->faulty_pts += frame->reordered_opaque <= is->last_pts_for_fault_detection;
1529                 is->last_pts_for_fault_detection= frame->reordered_opaque;
1530             }
1531         }
1532
1533         if(   (   decoder_reorder_pts==1
1534                || (decoder_reorder_pts && is->faulty_pts<is->faulty_dts)
1535                || pkt->dts == AV_NOPTS_VALUE)
1536            && frame->reordered_opaque != AV_NOPTS_VALUE)
1537             *pts= frame->reordered_opaque;
1538         else if(pkt->dts != AV_NOPTS_VALUE)
1539             *pts= pkt->dts;
1540         else
1541             *pts= 0;
1542
1543 //            if (len1 < 0)
1544 //                break;
1545     if (got_picture){
1546         is->skip_frames_index += 1;
1547         if(is->skip_frames_index >= is->skip_frames){
1548             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1549             return 1;
1550         }
1551
1552     }
1553     return 0;
1554 }
1555
1556 #if CONFIG_AVFILTER
1557 typedef struct {
1558     VideoState *is;
1559     AVFrame *frame;
1560     int use_dr1;
1561 } FilterPriv;
1562
1563 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1564 {
1565     AVFilterContext *ctx = codec->opaque;
1566     AVFilterPicRef  *ref;
1567     int perms = AV_PERM_WRITE;
1568     int w, h, stride[4];
1569     unsigned edge;
1570
1571     if(pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1572         if(pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1573         if(pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1574         if(pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1575     }
1576     if(pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1577
1578     w = codec->width;
1579     h = codec->height;
1580     avcodec_align_dimensions2(codec, &w, &h, stride);
1581     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1582     w += edge << 1;
1583     h += edge << 1;
1584
1585     if(!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1586         return -1;
1587
1588     ref->w = codec->width;
1589     ref->h = codec->height;
1590     for(int i = 0; i < 3; i ++) {
1591         unsigned hshift = i == 0 ? 0 : av_pix_fmt_descriptors[ref->pic->format].log2_chroma_w;
1592         unsigned vshift = i == 0 ? 0 : av_pix_fmt_descriptors[ref->pic->format].log2_chroma_h;
1593
1594         ref->data[i]    += (edge >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1595         pic->data[i]     = ref->data[i];
1596         pic->linesize[i] = ref->linesize[i];
1597     }
1598     pic->opaque = ref;
1599     pic->age    = INT_MAX;
1600     pic->type   = FF_BUFFER_TYPE_USER;
1601     return 0;
1602 }
1603
1604 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1605 {
1606     memset(pic->data, 0, sizeof(pic->data));
1607     avfilter_unref_pic(pic->opaque);
1608 }
1609
1610 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1611 {
1612     FilterPriv *priv = ctx->priv;
1613     AVCodecContext *codec;
1614     if(!opaque) return -1;
1615
1616     priv->is = opaque;
1617     codec    = priv->is->video_st->codec;
1618     codec->opaque = ctx;
1619     if(codec->codec->capabilities & CODEC_CAP_DR1) {
1620         priv->use_dr1 = 1;
1621         codec->get_buffer     = input_get_buffer;
1622         codec->release_buffer = input_release_buffer;
1623     }
1624
1625     priv->frame = avcodec_alloc_frame();
1626
1627     return 0;
1628 }
1629
1630 static void input_uninit(AVFilterContext *ctx)
1631 {
1632     FilterPriv *priv = ctx->priv;
1633     av_free(priv->frame);
1634 }
1635
1636 static int input_request_frame(AVFilterLink *link)
1637 {
1638     FilterPriv *priv = link->src->priv;
1639     AVFilterPicRef *picref;
1640     int64_t pts = 0;
1641     AVPacket pkt;
1642     int ret;
1643
1644     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1645         av_free_packet(&pkt);
1646     if (ret < 0)
1647         return -1;
1648
1649     if(priv->use_dr1) {
1650         picref = avfilter_ref_pic(priv->frame->opaque, ~0);
1651     } else {
1652         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1653         av_picture_copy((AVPicture *)&picref->data, (AVPicture *)priv->frame,
1654                         picref->pic->format, link->w, link->h);
1655     }
1656     av_free_packet(&pkt);
1657
1658     picref->pts = pts;
1659     picref->pos = pkt.pos;
1660     picref->pixel_aspect = priv->is->video_st->codec->sample_aspect_ratio;
1661     avfilter_start_frame(link, picref);
1662     avfilter_draw_slice(link, 0, link->h, 1);
1663     avfilter_end_frame(link);
1664
1665     return 0;
1666 }
1667
1668 static int input_query_formats(AVFilterContext *ctx)
1669 {
1670     FilterPriv *priv = ctx->priv;
1671     enum PixelFormat pix_fmts[] = {
1672         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1673     };
1674
1675     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1676     return 0;
1677 }
1678
1679 static int input_config_props(AVFilterLink *link)
1680 {
1681     FilterPriv *priv  = link->src->priv;
1682     AVCodecContext *c = priv->is->video_st->codec;
1683
1684     link->w = c->width;
1685     link->h = c->height;
1686
1687     return 0;
1688 }
1689
1690 static AVFilter input_filter =
1691 {
1692     .name      = "ffplay_input",
1693
1694     .priv_size = sizeof(FilterPriv),
1695
1696     .init      = input_init,
1697     .uninit    = input_uninit,
1698
1699     .query_formats = input_query_formats,
1700
1701     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1702     .outputs   = (AVFilterPad[]) {{ .name = "default",
1703                                     .type = AVMEDIA_TYPE_VIDEO,
1704                                     .request_frame = input_request_frame,
1705                                     .config_props  = input_config_props, },
1706                                   { .name = NULL }},
1707 };
1708
1709 static void output_end_frame(AVFilterLink *link)
1710 {
1711 }
1712
1713 static int output_query_formats(AVFilterContext *ctx)
1714 {
1715     enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1716
1717     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1718     return 0;
1719 }
1720
1721 static int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
1722                                     int64_t *pts, int64_t *pos)
1723 {
1724     AVFilterPicRef *pic;
1725
1726     if(avfilter_request_frame(ctx->inputs[0]))
1727         return -1;
1728     if(!(pic = ctx->inputs[0]->cur_pic))
1729         return -1;
1730     ctx->inputs[0]->cur_pic = NULL;
1731
1732     frame->opaque = pic;
1733     *pts          = pic->pts;
1734     *pos          = pic->pos;
1735
1736     memcpy(frame->data,     pic->data,     sizeof(frame->data));
1737     memcpy(frame->linesize, pic->linesize, sizeof(frame->linesize));
1738
1739     return 1;
1740 }
1741
1742 static AVFilter output_filter =
1743 {
1744     .name      = "ffplay_output",
1745
1746     .query_formats = output_query_formats,
1747
1748     .inputs    = (AVFilterPad[]) {{ .name          = "default",
1749                                     .type          = AVMEDIA_TYPE_VIDEO,
1750                                     .end_frame     = output_end_frame,
1751                                     .min_perms     = AV_PERM_READ, },
1752                                   { .name = NULL }},
1753     .outputs   = (AVFilterPad[]) {{ .name = NULL }},
1754 };
1755 #endif  /* CONFIG_AVFILTER */
1756
1757 static int video_thread(void *arg)
1758 {
1759     VideoState *is = arg;
1760     AVFrame *frame= avcodec_alloc_frame();
1761     int64_t pts_int;
1762     double pts;
1763     int ret;
1764
1765 #if CONFIG_AVFILTER
1766     int64_t pos;
1767     char sws_flags_str[128];
1768     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1769     AVFilterGraph *graph = av_mallocz(sizeof(AVFilterGraph));
1770     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1771     graph->scale_sws_opts = av_strdup(sws_flags_str);
1772
1773     if(!(filt_src = avfilter_open(&input_filter,  "src")))   goto the_end;
1774     if(!(filt_out = avfilter_open(&output_filter, "out")))   goto the_end;
1775
1776     if(avfilter_init_filter(filt_src, NULL, is))             goto the_end;
1777     if(avfilter_init_filter(filt_out, NULL, frame))          goto the_end;
1778
1779
1780     if(vfilters) {
1781         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
1782         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
1783
1784         outputs->name    = av_strdup("in");
1785         outputs->filter  = filt_src;
1786         outputs->pad_idx = 0;
1787         outputs->next    = NULL;
1788
1789         inputs->name    = av_strdup("out");
1790         inputs->filter  = filt_out;
1791         inputs->pad_idx = 0;
1792         inputs->next    = NULL;
1793
1794         if (avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL) < 0)
1795             goto the_end;
1796         av_freep(&vfilters);
1797     } else {
1798         if(avfilter_link(filt_src, 0, filt_out, 0) < 0)          goto the_end;
1799     }
1800     avfilter_graph_add_filter(graph, filt_src);
1801     avfilter_graph_add_filter(graph, filt_out);
1802
1803     if(avfilter_graph_check_validity(graph, NULL))           goto the_end;
1804     if(avfilter_graph_config_formats(graph, NULL))           goto the_end;
1805     if(avfilter_graph_config_links(graph, NULL))             goto the_end;
1806
1807     is->out_video_filter = filt_out;
1808 #endif
1809
1810     for(;;) {
1811 #if !CONFIG_AVFILTER
1812         AVPacket pkt;
1813 #endif
1814         while (is->paused && !is->videoq.abort_request)
1815             SDL_Delay(10);
1816 #if CONFIG_AVFILTER
1817         ret = get_filtered_video_frame(filt_out, frame, &pts_int, &pos);
1818 #else
1819         ret = get_video_frame(is, frame, &pts_int, &pkt);
1820 #endif
1821
1822         if (ret < 0) goto the_end;
1823
1824         if (!ret)
1825             continue;
1826
1827         pts = pts_int*av_q2d(is->video_st->time_base);
1828
1829 #if CONFIG_AVFILTER
1830         ret = output_picture2(is, frame, pts, pos);
1831 #else
1832         ret = output_picture2(is, frame, pts,  pkt.pos);
1833         av_free_packet(&pkt);
1834 #endif
1835         if (ret < 0)
1836             goto the_end;
1837
1838         if (step)
1839             if (cur_stream)
1840                 stream_pause(cur_stream);
1841     }
1842  the_end:
1843 #if CONFIG_AVFILTER
1844     avfilter_graph_destroy(graph);
1845     av_freep(&graph);
1846 #endif
1847     av_free(frame);
1848     return 0;
1849 }
1850
1851 static int subtitle_thread(void *arg)
1852 {
1853     VideoState *is = arg;
1854     SubPicture *sp;
1855     AVPacket pkt1, *pkt = &pkt1;
1856     int len1, got_subtitle;
1857     double pts;
1858     int i, j;
1859     int r, g, b, y, u, v, a;
1860
1861     for(;;) {
1862         while (is->paused && !is->subtitleq.abort_request) {
1863             SDL_Delay(10);
1864         }
1865         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1866             break;
1867
1868         if(pkt->data == flush_pkt.data){
1869             avcodec_flush_buffers(is->subtitle_st->codec);
1870             continue;
1871         }
1872         SDL_LockMutex(is->subpq_mutex);
1873         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1874                !is->subtitleq.abort_request) {
1875             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1876         }
1877         SDL_UnlockMutex(is->subpq_mutex);
1878
1879         if (is->subtitleq.abort_request)
1880             goto the_end;
1881
1882         sp = &is->subpq[is->subpq_windex];
1883
1884        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1885            this packet, if any */
1886         pts = 0;
1887         if (pkt->pts != AV_NOPTS_VALUE)
1888             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1889
1890         len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1891                                     &sp->sub, &got_subtitle,
1892                                     pkt);
1893 //            if (len1 < 0)
1894 //                break;
1895         if (got_subtitle && sp->sub.format == 0) {
1896             sp->pts = pts;
1897
1898             for (i = 0; i < sp->sub.num_rects; i++)
1899             {
1900                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1901                 {
1902                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1903                     y = RGB_TO_Y_CCIR(r, g, b);
1904                     u = RGB_TO_U_CCIR(r, g, b, 0);
1905                     v = RGB_TO_V_CCIR(r, g, b, 0);
1906                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1907                 }
1908             }
1909
1910             /* now we can update the picture count */
1911             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1912                 is->subpq_windex = 0;
1913             SDL_LockMutex(is->subpq_mutex);
1914             is->subpq_size++;
1915             SDL_UnlockMutex(is->subpq_mutex);
1916         }
1917         av_free_packet(pkt);
1918 //        if (step)
1919 //            if (cur_stream)
1920 //                stream_pause(cur_stream);
1921     }
1922  the_end:
1923     return 0;
1924 }
1925
1926 /* copy samples for viewing in editor window */
1927 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1928 {
1929     int size, len, channels;
1930
1931     channels = is->audio_st->codec->channels;
1932
1933     size = samples_size / sizeof(short);
1934     while (size > 0) {
1935         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1936         if (len > size)
1937             len = size;
1938         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1939         samples += len;
1940         is->sample_array_index += len;
1941         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1942             is->sample_array_index = 0;
1943         size -= len;
1944     }
1945 }
1946
1947 /* return the new audio buffer size (samples can be added or deleted
1948    to get better sync if video or external master clock) */
1949 static int synchronize_audio(VideoState *is, short *samples,
1950                              int samples_size1, double pts)
1951 {
1952     int n, samples_size;
1953     double ref_clock;
1954
1955     n = 2 * is->audio_st->codec->channels;
1956     samples_size = samples_size1;
1957
1958     /* if not master, then we try to remove or add samples to correct the clock */
1959     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1960          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1961         double diff, avg_diff;
1962         int wanted_size, min_size, max_size, nb_samples;
1963
1964         ref_clock = get_master_clock(is);
1965         diff = get_audio_clock(is) - ref_clock;
1966
1967         if (diff < AV_NOSYNC_THRESHOLD) {
1968             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1969             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1970                 /* not enough measures to have a correct estimate */
1971                 is->audio_diff_avg_count++;
1972             } else {
1973                 /* estimate the A-V difference */
1974                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1975
1976                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1977                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1978                     nb_samples = samples_size / n;
1979
1980                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1981                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1982                     if (wanted_size < min_size)
1983                         wanted_size = min_size;
1984                     else if (wanted_size > max_size)
1985                         wanted_size = max_size;
1986
1987                     /* add or remove samples to correction the synchro */
1988                     if (wanted_size < samples_size) {
1989                         /* remove samples */
1990                         samples_size = wanted_size;
1991                     } else if (wanted_size > samples_size) {
1992                         uint8_t *samples_end, *q;
1993                         int nb;
1994
1995                         /* add samples */
1996                         nb = (samples_size - wanted_size);
1997                         samples_end = (uint8_t *)samples + samples_size - n;
1998                         q = samples_end + n;
1999                         while (nb > 0) {
2000                             memcpy(q, samples_end, n);
2001                             q += n;
2002                             nb -= n;
2003                         }
2004                         samples_size = wanted_size;
2005                     }
2006                 }
2007 #if 0
2008                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
2009                        diff, avg_diff, samples_size - samples_size1,
2010                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
2011 #endif
2012             }
2013         } else {
2014             /* too big difference : may be initial PTS errors, so
2015                reset A-V filter */
2016             is->audio_diff_avg_count = 0;
2017             is->audio_diff_cum = 0;
2018         }
2019     }
2020
2021     return samples_size;
2022 }
2023
2024 /* decode one audio frame and returns its uncompressed size */
2025 static int audio_decode_frame(VideoState *is, double *pts_ptr)
2026 {
2027     AVPacket *pkt_temp = &is->audio_pkt_temp;
2028     AVPacket *pkt = &is->audio_pkt;
2029     AVCodecContext *dec= is->audio_st->codec;
2030     int n, len1, data_size;
2031     double pts;
2032
2033     for(;;) {
2034         /* NOTE: the audio packet can contain several frames */
2035         while (pkt_temp->size > 0) {
2036             data_size = sizeof(is->audio_buf1);
2037             len1 = avcodec_decode_audio3(dec,
2038                                         (int16_t *)is->audio_buf1, &data_size,
2039                                         pkt_temp);
2040             if (len1 < 0) {
2041                 /* if error, we skip the frame */
2042                 pkt_temp->size = 0;
2043                 break;
2044             }
2045
2046             pkt_temp->data += len1;
2047             pkt_temp->size -= len1;
2048             if (data_size <= 0)
2049                 continue;
2050
2051             if (dec->sample_fmt != is->audio_src_fmt) {
2052                 if (is->reformat_ctx)
2053                     av_audio_convert_free(is->reformat_ctx);
2054                 is->reformat_ctx= av_audio_convert_alloc(SAMPLE_FMT_S16, 1,
2055                                                          dec->sample_fmt, 1, NULL, 0);
2056                 if (!is->reformat_ctx) {
2057                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2058                         avcodec_get_sample_fmt_name(dec->sample_fmt),
2059                         avcodec_get_sample_fmt_name(SAMPLE_FMT_S16));
2060                         break;
2061                 }
2062                 is->audio_src_fmt= dec->sample_fmt;
2063             }
2064
2065             if (is->reformat_ctx) {
2066                 const void *ibuf[6]= {is->audio_buf1};
2067                 void *obuf[6]= {is->audio_buf2};
2068                 int istride[6]= {av_get_bits_per_sample_format(dec->sample_fmt)/8};
2069                 int ostride[6]= {2};
2070                 int len= data_size/istride[0];
2071                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2072                     printf("av_audio_convert() failed\n");
2073                     break;
2074                 }
2075                 is->audio_buf= is->audio_buf2;
2076                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2077                           remove this legacy cruft */
2078                 data_size= len*2;
2079             }else{
2080                 is->audio_buf= is->audio_buf1;
2081             }
2082
2083             /* if no pts, then compute it */
2084             pts = is->audio_clock;
2085             *pts_ptr = pts;
2086             n = 2 * dec->channels;
2087             is->audio_clock += (double)data_size /
2088                 (double)(n * dec->sample_rate);
2089 #if defined(DEBUG_SYNC)
2090             {
2091                 static double last_clock;
2092                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2093                        is->audio_clock - last_clock,
2094                        is->audio_clock, pts);
2095                 last_clock = is->audio_clock;
2096             }
2097 #endif
2098             return data_size;
2099         }
2100
2101         /* free the current packet */
2102         if (pkt->data)
2103             av_free_packet(pkt);
2104
2105         if (is->paused || is->audioq.abort_request) {
2106             return -1;
2107         }
2108
2109         /* read next packet */
2110         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2111             return -1;
2112         if(pkt->data == flush_pkt.data){
2113             avcodec_flush_buffers(dec);
2114             continue;
2115         }
2116
2117         pkt_temp->data = pkt->data;
2118         pkt_temp->size = pkt->size;
2119
2120         /* if update the audio clock with the pts */
2121         if (pkt->pts != AV_NOPTS_VALUE) {
2122             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2123         }
2124     }
2125 }
2126
2127 /* get the current audio output buffer size, in samples. With SDL, we
2128    cannot have a precise information */
2129 static int audio_write_get_buf_size(VideoState *is)
2130 {
2131     return is->audio_buf_size - is->audio_buf_index;
2132 }
2133
2134
2135 /* prepare a new audio buffer */
2136 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2137 {
2138     VideoState *is = opaque;
2139     int audio_size, len1;
2140     double pts;
2141
2142     audio_callback_time = av_gettime();
2143
2144     while (len > 0) {
2145         if (is->audio_buf_index >= is->audio_buf_size) {
2146            audio_size = audio_decode_frame(is, &pts);
2147            if (audio_size < 0) {
2148                 /* if error, just output silence */
2149                is->audio_buf = is->audio_buf1;
2150                is->audio_buf_size = 1024;
2151                memset(is->audio_buf, 0, is->audio_buf_size);
2152            } else {
2153                if (is->show_audio)
2154                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2155                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2156                                               pts);
2157                is->audio_buf_size = audio_size;
2158            }
2159            is->audio_buf_index = 0;
2160         }
2161         len1 = is->audio_buf_size - is->audio_buf_index;
2162         if (len1 > len)
2163             len1 = len;
2164         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2165         len -= len1;
2166         stream += len1;
2167         is->audio_buf_index += len1;
2168     }
2169 }
2170
2171 /* open a given stream. Return 0 if OK */
2172 static int stream_component_open(VideoState *is, int stream_index)
2173 {
2174     AVFormatContext *ic = is->ic;
2175     AVCodecContext *avctx;
2176     AVCodec *codec;
2177     SDL_AudioSpec wanted_spec, spec;
2178
2179     if (stream_index < 0 || stream_index >= ic->nb_streams)
2180         return -1;
2181     avctx = ic->streams[stream_index]->codec;
2182
2183     /* prepare audio output */
2184     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2185         if (avctx->channels > 0) {
2186             avctx->request_channels = FFMIN(2, avctx->channels);
2187         } else {
2188             avctx->request_channels = 2;
2189         }
2190     }
2191
2192     codec = avcodec_find_decoder(avctx->codec_id);
2193     avctx->debug_mv = debug_mv;
2194     avctx->debug = debug;
2195     avctx->workaround_bugs = workaround_bugs;
2196     avctx->lowres = lowres;
2197     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2198     avctx->idct_algo= idct;
2199     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2200     avctx->skip_frame= skip_frame;
2201     avctx->skip_idct= skip_idct;
2202     avctx->skip_loop_filter= skip_loop_filter;
2203     avctx->error_recognition= error_recognition;
2204     avctx->error_concealment= error_concealment;
2205     avcodec_thread_init(avctx, thread_count);
2206
2207     set_context_opts(avctx, avcodec_opts[avctx->codec_type], 0);
2208
2209     if (!codec ||
2210         avcodec_open(avctx, codec) < 0)
2211         return -1;
2212
2213     /* prepare audio output */
2214     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2215         wanted_spec.freq = avctx->sample_rate;
2216         wanted_spec.format = AUDIO_S16SYS;
2217         wanted_spec.channels = avctx->channels;
2218         wanted_spec.silence = 0;
2219         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2220         wanted_spec.callback = sdl_audio_callback;
2221         wanted_spec.userdata = is;
2222         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2223             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2224             return -1;
2225         }
2226         is->audio_hw_buf_size = spec.size;
2227         is->audio_src_fmt= SAMPLE_FMT_S16;
2228     }
2229
2230     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2231     switch(avctx->codec_type) {
2232     case AVMEDIA_TYPE_AUDIO:
2233         is->audio_stream = stream_index;
2234         is->audio_st = ic->streams[stream_index];
2235         is->audio_buf_size = 0;
2236         is->audio_buf_index = 0;
2237
2238         /* init averaging filter */
2239         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2240         is->audio_diff_avg_count = 0;
2241         /* since we do not have a precise anough audio fifo fullness,
2242            we correct audio sync only if larger than this threshold */
2243         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2244
2245         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2246         packet_queue_init(&is->audioq);
2247         SDL_PauseAudio(0);
2248         break;
2249     case AVMEDIA_TYPE_VIDEO:
2250         is->video_stream = stream_index;
2251         is->video_st = ic->streams[stream_index];
2252
2253 //        is->video_current_pts_time = av_gettime();
2254
2255         packet_queue_init(&is->videoq);
2256         is->video_tid = SDL_CreateThread(video_thread, is);
2257         break;
2258     case AVMEDIA_TYPE_SUBTITLE:
2259         is->subtitle_stream = stream_index;
2260         is->subtitle_st = ic->streams[stream_index];
2261         packet_queue_init(&is->subtitleq);
2262
2263         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2264         break;
2265     default:
2266         break;
2267     }
2268     return 0;
2269 }
2270
2271 static void stream_component_close(VideoState *is, int stream_index)
2272 {
2273     AVFormatContext *ic = is->ic;
2274     AVCodecContext *avctx;
2275
2276     if (stream_index < 0 || stream_index >= ic->nb_streams)
2277         return;
2278     avctx = ic->streams[stream_index]->codec;
2279
2280     switch(avctx->codec_type) {
2281     case AVMEDIA_TYPE_AUDIO:
2282         packet_queue_abort(&is->audioq);
2283
2284         SDL_CloseAudio();
2285
2286         packet_queue_end(&is->audioq);
2287         if (is->reformat_ctx)
2288             av_audio_convert_free(is->reformat_ctx);
2289         is->reformat_ctx = NULL;
2290         break;
2291     case AVMEDIA_TYPE_VIDEO:
2292         packet_queue_abort(&is->videoq);
2293
2294         /* note: we also signal this mutex to make sure we deblock the
2295            video thread in all cases */
2296         SDL_LockMutex(is->pictq_mutex);
2297         SDL_CondSignal(is->pictq_cond);
2298         SDL_UnlockMutex(is->pictq_mutex);
2299
2300         SDL_WaitThread(is->video_tid, NULL);
2301
2302         packet_queue_end(&is->videoq);
2303         break;
2304     case AVMEDIA_TYPE_SUBTITLE:
2305         packet_queue_abort(&is->subtitleq);
2306
2307         /* note: we also signal this mutex to make sure we deblock the
2308            video thread in all cases */
2309         SDL_LockMutex(is->subpq_mutex);
2310         is->subtitle_stream_changed = 1;
2311
2312         SDL_CondSignal(is->subpq_cond);
2313         SDL_UnlockMutex(is->subpq_mutex);
2314
2315         SDL_WaitThread(is->subtitle_tid, NULL);
2316
2317         packet_queue_end(&is->subtitleq);
2318         break;
2319     default:
2320         break;
2321     }
2322
2323     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2324     avcodec_close(avctx);
2325     switch(avctx->codec_type) {
2326     case AVMEDIA_TYPE_AUDIO:
2327         is->audio_st = NULL;
2328         is->audio_stream = -1;
2329         break;
2330     case AVMEDIA_TYPE_VIDEO:
2331         is->video_st = NULL;
2332         is->video_stream = -1;
2333         break;
2334     case AVMEDIA_TYPE_SUBTITLE:
2335         is->subtitle_st = NULL;
2336         is->subtitle_stream = -1;
2337         break;
2338     default:
2339         break;
2340     }
2341 }
2342
2343 /* since we have only one decoding thread, we can use a global
2344    variable instead of a thread local variable */
2345 static VideoState *global_video_state;
2346
2347 static int decode_interrupt_cb(void)
2348 {
2349     return (global_video_state && global_video_state->abort_request);
2350 }
2351
2352 /* this thread gets the stream from the disk or the network */
2353 static int decode_thread(void *arg)
2354 {
2355     VideoState *is = arg;
2356     AVFormatContext *ic;
2357     int err, i, ret;
2358     int st_index[AVMEDIA_TYPE_NB];
2359     int st_count[AVMEDIA_TYPE_NB]={0};
2360     int st_best_packet_count[AVMEDIA_TYPE_NB];
2361     AVPacket pkt1, *pkt = &pkt1;
2362     AVFormatParameters params, *ap = &params;
2363     int eof=0;
2364     int pkt_in_play_range = 0;
2365
2366     ic = avformat_alloc_context();
2367
2368     memset(st_index, -1, sizeof(st_index));
2369     memset(st_best_packet_count, -1, sizeof(st_best_packet_count));
2370     is->video_stream = -1;
2371     is->audio_stream = -1;
2372     is->subtitle_stream = -1;
2373
2374     global_video_state = is;
2375     url_set_interrupt_cb(decode_interrupt_cb);
2376
2377     memset(ap, 0, sizeof(*ap));
2378
2379     ap->prealloced_context = 1;
2380     ap->width = frame_width;
2381     ap->height= frame_height;
2382     ap->time_base= (AVRational){1, 25};
2383     ap->pix_fmt = frame_pix_fmt;
2384
2385     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);
2386
2387     err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
2388     if (err < 0) {
2389         print_error(is->filename, err);
2390         ret = -1;
2391         goto fail;
2392     }
2393     is->ic = ic;
2394
2395     if(genpts)
2396         ic->flags |= AVFMT_FLAG_GENPTS;
2397
2398     err = av_find_stream_info(ic);
2399     if (err < 0) {
2400         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2401         ret = -1;
2402         goto fail;
2403     }
2404     if(ic->pb)
2405         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2406
2407     if(seek_by_bytes<0)
2408         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2409
2410     /* if seeking requested, we execute it */
2411     if (start_time != AV_NOPTS_VALUE) {
2412         int64_t timestamp;
2413
2414         timestamp = start_time;
2415         /* add the stream start time */
2416         if (ic->start_time != AV_NOPTS_VALUE)
2417             timestamp += ic->start_time;
2418         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2419         if (ret < 0) {
2420             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2421                     is->filename, (double)timestamp / AV_TIME_BASE);
2422         }
2423     }
2424
2425     for(i = 0; i < ic->nb_streams; i++) {
2426         AVStream *st= ic->streams[i];
2427         AVCodecContext *avctx = st->codec;
2428         ic->streams[i]->discard = AVDISCARD_ALL;
2429         if(avctx->codec_type >= (unsigned)AVMEDIA_TYPE_NB)
2430             continue;
2431         if(st_count[avctx->codec_type]++ != wanted_stream[avctx->codec_type] && wanted_stream[avctx->codec_type] >= 0)
2432             continue;
2433
2434         if(st_best_packet_count[avctx->codec_type] >= st->codec_info_nb_frames)
2435             continue;
2436         st_best_packet_count[avctx->codec_type]= st->codec_info_nb_frames;
2437
2438         switch(avctx->codec_type) {
2439         case AVMEDIA_TYPE_AUDIO:
2440             if (!audio_disable)
2441                 st_index[AVMEDIA_TYPE_AUDIO] = i;
2442             break;
2443         case AVMEDIA_TYPE_VIDEO:
2444         case AVMEDIA_TYPE_SUBTITLE:
2445             if (!video_disable)
2446                 st_index[avctx->codec_type] = i;
2447             break;
2448         default:
2449             break;
2450         }
2451     }
2452     if (show_status) {
2453         dump_format(ic, 0, is->filename, 0);
2454     }
2455
2456     /* open the streams */
2457     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2458         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2459     }
2460
2461     ret=-1;
2462     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2463         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2464     }
2465     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2466     if(ret<0) {
2467         if (!display_disable)
2468             is->show_audio = 2;
2469     }
2470
2471     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2472         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2473     }
2474
2475     if (is->video_stream < 0 && is->audio_stream < 0) {
2476         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2477         ret = -1;
2478         goto fail;
2479     }
2480
2481     for(;;) {
2482         if (is->abort_request)
2483             break;
2484         if (is->paused != is->last_paused) {
2485             is->last_paused = is->paused;
2486             if (is->paused)
2487                 is->read_pause_return= av_read_pause(ic);
2488             else
2489                 av_read_play(ic);
2490         }
2491 #if CONFIG_RTSP_DEMUXER
2492         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2493             /* wait 10 ms to avoid trying to get another packet */
2494             /* XXX: horrible */
2495             SDL_Delay(10);
2496             continue;
2497         }
2498 #endif
2499         if (is->seek_req) {
2500             int64_t seek_target= is->seek_pos;
2501             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2502             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2503 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2504 //      of the seek_pos/seek_rel variables
2505
2506             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2507             if (ret < 0) {
2508                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2509             }else{
2510                 if (is->audio_stream >= 0) {
2511                     packet_queue_flush(&is->audioq);
2512                     packet_queue_put(&is->audioq, &flush_pkt);
2513                 }
2514                 if (is->subtitle_stream >= 0) {
2515                     packet_queue_flush(&is->subtitleq);
2516                     packet_queue_put(&is->subtitleq, &flush_pkt);
2517                 }
2518                 if (is->video_stream >= 0) {
2519                     packet_queue_flush(&is->videoq);
2520                     packet_queue_put(&is->videoq, &flush_pkt);
2521                 }
2522             }
2523             is->seek_req = 0;
2524             eof= 0;
2525         }
2526
2527         /* if the queue are full, no need to read more */
2528         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2529             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2530                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2531                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2532             /* wait 10 ms */
2533             SDL_Delay(10);
2534             continue;
2535         }
2536         if(url_feof(ic->pb) || eof) {
2537             if(is->video_stream >= 0){
2538                 av_init_packet(pkt);
2539                 pkt->data=NULL;
2540                 pkt->size=0;
2541                 pkt->stream_index= is->video_stream;
2542                 packet_queue_put(&is->videoq, pkt);
2543             }
2544             SDL_Delay(10);
2545             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2546                 if(loop!=1 && (!loop || --loop)){
2547                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2548                 }else if(autoexit){
2549                     ret=AVERROR_EOF;
2550                     goto fail;
2551                 }
2552             }
2553             continue;
2554         }
2555         ret = av_read_frame(ic, pkt);
2556         if (ret < 0) {
2557             if (ret == AVERROR_EOF)
2558                 eof=1;
2559             if (url_ferror(ic->pb))
2560                 break;
2561             SDL_Delay(100); /* wait for user event */
2562             continue;
2563         }
2564         /* check if packet is in play range specified by user, then queue, otherwise discard */
2565         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2566                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2567                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2568                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2569                 <= ((double)duration/1000000);
2570         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2571             packet_queue_put(&is->audioq, pkt);
2572         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2573             packet_queue_put(&is->videoq, pkt);
2574         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2575             packet_queue_put(&is->subtitleq, pkt);
2576         } else {
2577             av_free_packet(pkt);
2578         }
2579     }
2580     /* wait until the end */
2581     while (!is->abort_request) {
2582         SDL_Delay(100);
2583     }
2584
2585     ret = 0;
2586  fail:
2587     /* disable interrupting */
2588     global_video_state = NULL;
2589
2590     /* close each stream */
2591     if (is->audio_stream >= 0)
2592         stream_component_close(is, is->audio_stream);
2593     if (is->video_stream >= 0)
2594         stream_component_close(is, is->video_stream);
2595     if (is->subtitle_stream >= 0)
2596         stream_component_close(is, is->subtitle_stream);
2597     if (is->ic) {
2598         av_close_input_file(is->ic);
2599         is->ic = NULL; /* safety */
2600     }
2601     url_set_interrupt_cb(NULL);
2602
2603     if (ret != 0) {
2604         SDL_Event event;
2605
2606         event.type = FF_QUIT_EVENT;
2607         event.user.data1 = is;
2608         SDL_PushEvent(&event);
2609     }
2610     return 0;
2611 }
2612
2613 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2614 {
2615     VideoState *is;
2616
2617     is = av_mallocz(sizeof(VideoState));
2618     if (!is)
2619         return NULL;
2620     av_strlcpy(is->filename, filename, sizeof(is->filename));
2621     is->iformat = iformat;
2622     is->ytop = 0;
2623     is->xleft = 0;
2624
2625     /* start video display */
2626     is->pictq_mutex = SDL_CreateMutex();
2627     is->pictq_cond = SDL_CreateCond();
2628
2629     is->subpq_mutex = SDL_CreateMutex();
2630     is->subpq_cond = SDL_CreateCond();
2631
2632     is->av_sync_type = av_sync_type;
2633     is->parse_tid = SDL_CreateThread(decode_thread, is);
2634     if (!is->parse_tid) {
2635         av_free(is);
2636         return NULL;
2637     }
2638     return is;
2639 }
2640
2641 static void stream_close(VideoState *is)
2642 {
2643     VideoPicture *vp;
2644     int i;
2645     /* XXX: use a special url_shutdown call to abort parse cleanly */
2646     is->abort_request = 1;
2647     SDL_WaitThread(is->parse_tid, NULL);
2648     SDL_WaitThread(is->refresh_tid, NULL);
2649
2650     /* free all pictures */
2651     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2652         vp = &is->pictq[i];
2653 #if CONFIG_AVFILTER
2654         if (vp->picref) {
2655             avfilter_unref_pic(vp->picref);
2656             vp->picref = NULL;
2657         }
2658 #endif
2659         if (vp->bmp) {
2660             SDL_FreeYUVOverlay(vp->bmp);
2661             vp->bmp = NULL;
2662         }
2663     }
2664     SDL_DestroyMutex(is->pictq_mutex);
2665     SDL_DestroyCond(is->pictq_cond);
2666     SDL_DestroyMutex(is->subpq_mutex);
2667     SDL_DestroyCond(is->subpq_cond);
2668 #if !CONFIG_AVFILTER
2669     if (is->img_convert_ctx)
2670         sws_freeContext(is->img_convert_ctx);
2671 #endif
2672     av_free(is);
2673 }
2674
2675 static void stream_cycle_channel(VideoState *is, int codec_type)
2676 {
2677     AVFormatContext *ic = is->ic;
2678     int start_index, stream_index;
2679     AVStream *st;
2680
2681     if (codec_type == AVMEDIA_TYPE_VIDEO)
2682         start_index = is->video_stream;
2683     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2684         start_index = is->audio_stream;
2685     else
2686         start_index = is->subtitle_stream;
2687     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2688         return;
2689     stream_index = start_index;
2690     for(;;) {
2691         if (++stream_index >= is->ic->nb_streams)
2692         {
2693             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2694             {
2695                 stream_index = -1;
2696                 goto the_end;
2697             } else
2698                 stream_index = 0;
2699         }
2700         if (stream_index == start_index)
2701             return;
2702         st = ic->streams[stream_index];
2703         if (st->codec->codec_type == codec_type) {
2704             /* check that parameters are OK */
2705             switch(codec_type) {
2706             case AVMEDIA_TYPE_AUDIO:
2707                 if (st->codec->sample_rate != 0 &&
2708                     st->codec->channels != 0)
2709                     goto the_end;
2710                 break;
2711             case AVMEDIA_TYPE_VIDEO:
2712             case AVMEDIA_TYPE_SUBTITLE:
2713                 goto the_end;
2714             default:
2715                 break;
2716             }
2717         }
2718     }
2719  the_end:
2720     stream_component_close(is, start_index);
2721     stream_component_open(is, stream_index);
2722 }
2723
2724
2725 static void toggle_full_screen(void)
2726 {
2727     is_full_screen = !is_full_screen;
2728     if (!fs_screen_width) {
2729         /* use default SDL method */
2730 //        SDL_WM_ToggleFullScreen(screen);
2731     }
2732     video_open(cur_stream);
2733 }
2734
2735 static void toggle_pause(void)
2736 {
2737     if (cur_stream)
2738         stream_pause(cur_stream);
2739     step = 0;
2740 }
2741
2742 static void step_to_next_frame(void)
2743 {
2744     if (cur_stream) {
2745         /* if the stream is paused unpause it, then step */
2746         if (cur_stream->paused)
2747             stream_pause(cur_stream);
2748     }
2749     step = 1;
2750 }
2751
2752 static void do_exit(void)
2753 {
2754     int i;
2755     if (cur_stream) {
2756         stream_close(cur_stream);
2757         cur_stream = NULL;
2758     }
2759     for (i = 0; i < AVMEDIA_TYPE_NB; i++)
2760         av_free(avcodec_opts[i]);
2761     av_free(avformat_opts);
2762     av_free(sws_opts);
2763 #if CONFIG_AVFILTER
2764     avfilter_uninit();
2765 #endif
2766     if (show_status)
2767         printf("\n");
2768     SDL_Quit();
2769     exit(0);
2770 }
2771
2772 static void toggle_audio_display(void)
2773 {
2774     if (cur_stream) {
2775         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2776         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2777         fill_rectangle(screen,
2778                     cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2779                     bgcolor);
2780         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2781     }
2782 }
2783
2784 /* handle an event sent by the GUI */
2785 static void event_loop(void)
2786 {
2787     SDL_Event event;
2788     double incr, pos, frac;
2789
2790     for(;;) {
2791         double x;
2792         SDL_WaitEvent(&event);
2793         switch(event.type) {
2794         case SDL_KEYDOWN:
2795             switch(event.key.keysym.sym) {
2796             case SDLK_ESCAPE:
2797             case SDLK_q:
2798                 do_exit();
2799                 break;
2800             case SDLK_f:
2801                 toggle_full_screen();
2802                 break;
2803             case SDLK_p:
2804             case SDLK_SPACE:
2805                 toggle_pause();
2806                 break;
2807             case SDLK_s: //S: Step to next frame
2808                 step_to_next_frame();
2809                 break;
2810             case SDLK_a:
2811                 if (cur_stream)
2812                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2813                 break;
2814             case SDLK_v:
2815                 if (cur_stream)
2816                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2817                 break;
2818             case SDLK_t:
2819                 if (cur_stream)
2820                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2821                 break;
2822             case SDLK_w:
2823                 toggle_audio_display();
2824                 break;
2825             case SDLK_LEFT:
2826                 incr = -10.0;
2827                 goto do_seek;
2828             case SDLK_RIGHT:
2829                 incr = 10.0;
2830                 goto do_seek;
2831             case SDLK_UP:
2832                 incr = 60.0;
2833                 goto do_seek;
2834             case SDLK_DOWN:
2835                 incr = -60.0;
2836             do_seek:
2837                 if (cur_stream) {
2838                     if (seek_by_bytes) {
2839                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2840                             pos= cur_stream->video_current_pos;
2841                         }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2842                             pos= cur_stream->audio_pkt.pos;
2843                         }else
2844                             pos = url_ftell(cur_stream->ic->pb);
2845                         if (cur_stream->ic->bit_rate)
2846                             incr *= cur_stream->ic->bit_rate / 8.0;
2847                         else
2848                             incr *= 180000.0;
2849                         pos += incr;
2850                         stream_seek(cur_stream, pos, incr, 1);
2851                     } else {
2852                         pos = get_master_clock(cur_stream);
2853                         pos += incr;
2854                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2855                     }
2856                 }
2857                 break;
2858             default:
2859                 break;
2860             }
2861             break;
2862         case SDL_MOUSEBUTTONDOWN:
2863         case SDL_MOUSEMOTION:
2864             if(event.type ==SDL_MOUSEBUTTONDOWN){
2865                 x= event.button.x;
2866             }else{
2867                 if(event.motion.state != SDL_PRESSED)
2868                     break;
2869                 x= event.motion.x;
2870             }
2871             if (cur_stream) {
2872                 if(seek_by_bytes || cur_stream->ic->duration<=0){
2873                     uint64_t size=  url_fsize(cur_stream->ic->pb);
2874                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2875                 }else{
2876                     int64_t ts;
2877                     int ns, hh, mm, ss;
2878                     int tns, thh, tmm, tss;
2879                     tns = cur_stream->ic->duration/1000000LL;
2880                     thh = tns/3600;
2881                     tmm = (tns%3600)/60;
2882                     tss = (tns%60);
2883                     frac = x/cur_stream->width;
2884                     ns = frac*tns;
2885                     hh = ns/3600;
2886                     mm = (ns%3600)/60;
2887                     ss = (ns%60);
2888                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2889                             hh, mm, ss, thh, tmm, tss);
2890                     ts = frac*cur_stream->ic->duration;
2891                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2892                         ts += cur_stream->ic->start_time;
2893                     stream_seek(cur_stream, ts, 0, 0);
2894                 }
2895             }
2896             break;
2897         case SDL_VIDEORESIZE:
2898             if (cur_stream) {
2899                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2900                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2901                 screen_width = cur_stream->width = event.resize.w;
2902                 screen_height= cur_stream->height= event.resize.h;
2903             }
2904             break;
2905         case SDL_QUIT:
2906         case FF_QUIT_EVENT:
2907             do_exit();
2908             break;
2909         case FF_ALLOC_EVENT:
2910             video_open(event.user.data1);
2911             alloc_picture(event.user.data1);
2912             break;
2913         case FF_REFRESH_EVENT:
2914             video_refresh_timer(event.user.data1);
2915             cur_stream->refresh=0;
2916             break;
2917         default:
2918             break;
2919         }
2920     }
2921 }
2922
2923 static void opt_frame_size(const char *arg)
2924 {
2925     if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2926         fprintf(stderr, "Incorrect frame size\n");
2927         exit(1);
2928     }
2929     if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2930         fprintf(stderr, "Frame size must be a multiple of 2\n");
2931         exit(1);
2932     }
2933 }
2934
2935 static int opt_width(const char *opt, const char *arg)
2936 {
2937     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2938     return 0;
2939 }
2940
2941 static int opt_height(const char *opt, const char *arg)
2942 {
2943     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2944     return 0;
2945 }
2946
2947 static void opt_format(const char *arg)
2948 {
2949     file_iformat = av_find_input_format(arg);
2950     if (!file_iformat) {
2951         fprintf(stderr, "Unknown input format: %s\n", arg);
2952         exit(1);
2953     }
2954 }
2955
2956 static void opt_frame_pix_fmt(const char *arg)
2957 {
2958     frame_pix_fmt = av_get_pix_fmt(arg);
2959 }
2960
2961 static int opt_sync(const char *opt, const char *arg)
2962 {
2963     if (!strcmp(arg, "audio"))
2964         av_sync_type = AV_SYNC_AUDIO_MASTER;
2965     else if (!strcmp(arg, "video"))
2966         av_sync_type = AV_SYNC_VIDEO_MASTER;
2967     else if (!strcmp(arg, "ext"))
2968         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2969     else {
2970         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2971         exit(1);
2972     }
2973     return 0;
2974 }
2975
2976 static int opt_seek(const char *opt, const char *arg)
2977 {
2978     start_time = parse_time_or_die(opt, arg, 1);
2979     return 0;
2980 }
2981
2982 static int opt_duration(const char *opt, const char *arg)
2983 {
2984     duration = parse_time_or_die(opt, arg, 1);
2985     return 0;
2986 }
2987
2988 static int opt_debug(const char *opt, const char *arg)
2989 {
2990     av_log_set_level(99);
2991     debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2992     return 0;
2993 }
2994
2995 static int opt_vismv(const char *opt, const char *arg)
2996 {
2997     debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2998     return 0;
2999 }
3000
3001 static int opt_thread_count(const char *opt, const char *arg)
3002 {
3003     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
3004 #if !HAVE_THREADS
3005     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
3006 #endif
3007     return 0;
3008 }
3009
3010 static const OptionDef options[] = {
3011 #include "cmdutils_common_opts.h"
3012     { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
3013     { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
3014     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
3015     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
3016     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
3017     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
3018     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
3019     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
3020     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
3021     { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
3022     { "t", HAS_ARG | OPT_FUNC2, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
3023     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
3024     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
3025     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
3026     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
3027     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
3028     { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
3029     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
3030     { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
3031     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
3032     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
3033     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3034     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
3035     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
3036     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
3037     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
3038     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
3039     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
3040     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
3041     { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
3042     { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
3043     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
3044     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
3045     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
3046     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
3047 #if CONFIG_AVFILTER
3048     { "vfilters", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
3049 #endif
3050     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
3051     { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
3052     { NULL, },
3053 };
3054
3055 static void show_usage(void)
3056 {
3057     printf("Simple media player\n");
3058     printf("usage: ffplay [options] input_file\n");
3059     printf("\n");
3060 }
3061
3062 static void show_help(void)
3063 {
3064     show_usage();
3065     show_help_options(options, "Main options:\n",
3066                       OPT_EXPERT, 0);
3067     show_help_options(options, "\nAdvanced options:\n",
3068                       OPT_EXPERT, OPT_EXPERT);
3069     printf("\nWhile playing:\n"
3070            "q, ESC              quit\n"
3071            "f                   toggle full screen\n"
3072            "p, SPC              pause\n"
3073            "a                   cycle audio channel\n"
3074            "v                   cycle video channel\n"
3075            "t                   cycle subtitle channel\n"
3076            "w                   show audio waves\n"
3077            "s                   activate frame-step mode\n"
3078            "left/right          seek backward/forward 10 seconds\n"
3079            "down/up             seek backward/forward 1 minute\n"
3080            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3081            );
3082 }
3083
3084 static void opt_input_file(const char *filename)
3085 {
3086     if (input_filename) {
3087         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3088                 filename, input_filename);
3089         exit(1);
3090     }
3091     if (!strcmp(filename, "-"))
3092         filename = "pipe:";
3093     input_filename = filename;
3094 }
3095
3096 /* Called from the main */
3097 int main(int argc, char **argv)
3098 {
3099     int flags, i;
3100
3101     /* register all codecs, demux and protocols */
3102     avcodec_register_all();
3103 #if CONFIG_AVDEVICE
3104     avdevice_register_all();
3105 #endif
3106 #if CONFIG_AVFILTER
3107     avfilter_register_all();
3108 #endif
3109     av_register_all();
3110
3111     for(i=0; i<AVMEDIA_TYPE_NB; i++){
3112         avcodec_opts[i]= avcodec_alloc_context2(i);
3113     }
3114     avformat_opts = avformat_alloc_context();
3115 #if !CONFIG_AVFILTER
3116     sws_opts = sws_getContext(16,16,0, 16,16,0, sws_flags, NULL,NULL,NULL);
3117 #endif
3118
3119     show_banner();
3120
3121     parse_options(argc, argv, options, opt_input_file);
3122
3123     if (!input_filename) {
3124         show_usage();
3125         fprintf(stderr, "An input file must be specified\n");
3126         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffplay'\n");
3127         exit(1);
3128     }
3129
3130     if (display_disable) {
3131         video_disable = 1;
3132     }
3133     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3134 #if !defined(__MINGW32__) && !defined(__APPLE__)
3135     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3136 #endif
3137     if (SDL_Init (flags)) {
3138         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3139         exit(1);
3140     }
3141
3142     if (!display_disable) {
3143 #if HAVE_SDL_VIDEO_SIZE
3144         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3145         fs_screen_width = vi->current_w;
3146         fs_screen_height = vi->current_h;
3147 #endif
3148     }
3149
3150     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3151     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3152     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3153
3154     av_init_packet(&flush_pkt);
3155     flush_pkt.data= "FLUSH";
3156
3157     cur_stream = stream_open(input_filename, file_iformat);
3158
3159     event_loop();
3160
3161     /* never returns */
3162
3163     return 0;
3164 }