FFplay : Avoid manipulating NULL data pointers so that future checks
[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 i, 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(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         if (ref->data[i]) {
1595         ref->data[i]    += (edge >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1596         }
1597         pic->data[i]     = ref->data[i];
1598         pic->linesize[i] = ref->linesize[i];
1599     }
1600     pic->opaque = ref;
1601     pic->age    = INT_MAX;
1602     pic->type   = FF_BUFFER_TYPE_USER;
1603     return 0;
1604 }
1605
1606 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1607 {
1608     memset(pic->data, 0, sizeof(pic->data));
1609     avfilter_unref_pic(pic->opaque);
1610 }
1611
1612 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1613 {
1614     FilterPriv *priv = ctx->priv;
1615     AVCodecContext *codec;
1616     if(!opaque) return -1;
1617
1618     priv->is = opaque;
1619     codec    = priv->is->video_st->codec;
1620     codec->opaque = ctx;
1621     if(codec->codec->capabilities & CODEC_CAP_DR1) {
1622         priv->use_dr1 = 1;
1623         codec->get_buffer     = input_get_buffer;
1624         codec->release_buffer = input_release_buffer;
1625     }
1626
1627     priv->frame = avcodec_alloc_frame();
1628
1629     return 0;
1630 }
1631
1632 static void input_uninit(AVFilterContext *ctx)
1633 {
1634     FilterPriv *priv = ctx->priv;
1635     av_free(priv->frame);
1636 }
1637
1638 static int input_request_frame(AVFilterLink *link)
1639 {
1640     FilterPriv *priv = link->src->priv;
1641     AVFilterPicRef *picref;
1642     int64_t pts = 0;
1643     AVPacket pkt;
1644     int ret;
1645
1646     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1647         av_free_packet(&pkt);
1648     if (ret < 0)
1649         return -1;
1650
1651     if(priv->use_dr1) {
1652         picref = avfilter_ref_pic(priv->frame->opaque, ~0);
1653     } else {
1654         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1655         av_picture_copy((AVPicture *)&picref->data, (AVPicture *)priv->frame,
1656                         picref->pic->format, link->w, link->h);
1657     }
1658     av_free_packet(&pkt);
1659
1660     picref->pts = pts;
1661     picref->pos = pkt.pos;
1662     picref->pixel_aspect = priv->is->video_st->codec->sample_aspect_ratio;
1663     avfilter_start_frame(link, picref);
1664     avfilter_draw_slice(link, 0, link->h, 1);
1665     avfilter_end_frame(link);
1666
1667     return 0;
1668 }
1669
1670 static int input_query_formats(AVFilterContext *ctx)
1671 {
1672     FilterPriv *priv = ctx->priv;
1673     enum PixelFormat pix_fmts[] = {
1674         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1675     };
1676
1677     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1678     return 0;
1679 }
1680
1681 static int input_config_props(AVFilterLink *link)
1682 {
1683     FilterPriv *priv  = link->src->priv;
1684     AVCodecContext *c = priv->is->video_st->codec;
1685
1686     link->w = c->width;
1687     link->h = c->height;
1688
1689     return 0;
1690 }
1691
1692 static AVFilter input_filter =
1693 {
1694     .name      = "ffplay_input",
1695
1696     .priv_size = sizeof(FilterPriv),
1697
1698     .init      = input_init,
1699     .uninit    = input_uninit,
1700
1701     .query_formats = input_query_formats,
1702
1703     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1704     .outputs   = (AVFilterPad[]) {{ .name = "default",
1705                                     .type = AVMEDIA_TYPE_VIDEO,
1706                                     .request_frame = input_request_frame,
1707                                     .config_props  = input_config_props, },
1708                                   { .name = NULL }},
1709 };
1710
1711 static void output_end_frame(AVFilterLink *link)
1712 {
1713 }
1714
1715 static int output_query_formats(AVFilterContext *ctx)
1716 {
1717     enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1718
1719     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1720     return 0;
1721 }
1722
1723 static int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
1724                                     int64_t *pts, int64_t *pos)
1725 {
1726     AVFilterPicRef *pic;
1727
1728     if(avfilter_request_frame(ctx->inputs[0]))
1729         return -1;
1730     if(!(pic = ctx->inputs[0]->cur_pic))
1731         return -1;
1732     ctx->inputs[0]->cur_pic = NULL;
1733
1734     frame->opaque = pic;
1735     *pts          = pic->pts;
1736     *pos          = pic->pos;
1737
1738     memcpy(frame->data,     pic->data,     sizeof(frame->data));
1739     memcpy(frame->linesize, pic->linesize, sizeof(frame->linesize));
1740
1741     return 1;
1742 }
1743
1744 static AVFilter output_filter =
1745 {
1746     .name      = "ffplay_output",
1747
1748     .query_formats = output_query_formats,
1749
1750     .inputs    = (AVFilterPad[]) {{ .name          = "default",
1751                                     .type          = AVMEDIA_TYPE_VIDEO,
1752                                     .end_frame     = output_end_frame,
1753                                     .min_perms     = AV_PERM_READ, },
1754                                   { .name = NULL }},
1755     .outputs   = (AVFilterPad[]) {{ .name = NULL }},
1756 };
1757 #endif  /* CONFIG_AVFILTER */
1758
1759 static int video_thread(void *arg)
1760 {
1761     VideoState *is = arg;
1762     AVFrame *frame= avcodec_alloc_frame();
1763     int64_t pts_int;
1764     double pts;
1765     int ret;
1766
1767 #if CONFIG_AVFILTER
1768     int64_t pos;
1769     char sws_flags_str[128];
1770     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1771     AVFilterGraph *graph = av_mallocz(sizeof(AVFilterGraph));
1772     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1773     graph->scale_sws_opts = av_strdup(sws_flags_str);
1774
1775     if(!(filt_src = avfilter_open(&input_filter,  "src")))   goto the_end;
1776     if(!(filt_out = avfilter_open(&output_filter, "out")))   goto the_end;
1777
1778     if(avfilter_init_filter(filt_src, NULL, is))             goto the_end;
1779     if(avfilter_init_filter(filt_out, NULL, frame))          goto the_end;
1780
1781
1782     if(vfilters) {
1783         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
1784         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
1785
1786         outputs->name    = av_strdup("in");
1787         outputs->filter  = filt_src;
1788         outputs->pad_idx = 0;
1789         outputs->next    = NULL;
1790
1791         inputs->name    = av_strdup("out");
1792         inputs->filter  = filt_out;
1793         inputs->pad_idx = 0;
1794         inputs->next    = NULL;
1795
1796         if (avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL) < 0)
1797             goto the_end;
1798         av_freep(&vfilters);
1799     } else {
1800         if(avfilter_link(filt_src, 0, filt_out, 0) < 0)          goto the_end;
1801     }
1802     avfilter_graph_add_filter(graph, filt_src);
1803     avfilter_graph_add_filter(graph, filt_out);
1804
1805     if(avfilter_graph_check_validity(graph, NULL))           goto the_end;
1806     if(avfilter_graph_config_formats(graph, NULL))           goto the_end;
1807     if(avfilter_graph_config_links(graph, NULL))             goto the_end;
1808
1809     is->out_video_filter = filt_out;
1810 #endif
1811
1812     for(;;) {
1813 #if !CONFIG_AVFILTER
1814         AVPacket pkt;
1815 #endif
1816         while (is->paused && !is->videoq.abort_request)
1817             SDL_Delay(10);
1818 #if CONFIG_AVFILTER
1819         ret = get_filtered_video_frame(filt_out, frame, &pts_int, &pos);
1820 #else
1821         ret = get_video_frame(is, frame, &pts_int, &pkt);
1822 #endif
1823
1824         if (ret < 0) goto the_end;
1825
1826         if (!ret)
1827             continue;
1828
1829         pts = pts_int*av_q2d(is->video_st->time_base);
1830
1831 #if CONFIG_AVFILTER
1832         ret = output_picture2(is, frame, pts, pos);
1833 #else
1834         ret = output_picture2(is, frame, pts,  pkt.pos);
1835         av_free_packet(&pkt);
1836 #endif
1837         if (ret < 0)
1838             goto the_end;
1839
1840         if (step)
1841             if (cur_stream)
1842                 stream_pause(cur_stream);
1843     }
1844  the_end:
1845 #if CONFIG_AVFILTER
1846     avfilter_graph_destroy(graph);
1847     av_freep(&graph);
1848 #endif
1849     av_free(frame);
1850     return 0;
1851 }
1852
1853 static int subtitle_thread(void *arg)
1854 {
1855     VideoState *is = arg;
1856     SubPicture *sp;
1857     AVPacket pkt1, *pkt = &pkt1;
1858     int len1, got_subtitle;
1859     double pts;
1860     int i, j;
1861     int r, g, b, y, u, v, a;
1862
1863     for(;;) {
1864         while (is->paused && !is->subtitleq.abort_request) {
1865             SDL_Delay(10);
1866         }
1867         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1868             break;
1869
1870         if(pkt->data == flush_pkt.data){
1871             avcodec_flush_buffers(is->subtitle_st->codec);
1872             continue;
1873         }
1874         SDL_LockMutex(is->subpq_mutex);
1875         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1876                !is->subtitleq.abort_request) {
1877             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1878         }
1879         SDL_UnlockMutex(is->subpq_mutex);
1880
1881         if (is->subtitleq.abort_request)
1882             goto the_end;
1883
1884         sp = &is->subpq[is->subpq_windex];
1885
1886        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1887            this packet, if any */
1888         pts = 0;
1889         if (pkt->pts != AV_NOPTS_VALUE)
1890             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1891
1892         len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1893                                     &sp->sub, &got_subtitle,
1894                                     pkt);
1895 //            if (len1 < 0)
1896 //                break;
1897         if (got_subtitle && sp->sub.format == 0) {
1898             sp->pts = pts;
1899
1900             for (i = 0; i < sp->sub.num_rects; i++)
1901             {
1902                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1903                 {
1904                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1905                     y = RGB_TO_Y_CCIR(r, g, b);
1906                     u = RGB_TO_U_CCIR(r, g, b, 0);
1907                     v = RGB_TO_V_CCIR(r, g, b, 0);
1908                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1909                 }
1910             }
1911
1912             /* now we can update the picture count */
1913             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1914                 is->subpq_windex = 0;
1915             SDL_LockMutex(is->subpq_mutex);
1916             is->subpq_size++;
1917             SDL_UnlockMutex(is->subpq_mutex);
1918         }
1919         av_free_packet(pkt);
1920 //        if (step)
1921 //            if (cur_stream)
1922 //                stream_pause(cur_stream);
1923     }
1924  the_end:
1925     return 0;
1926 }
1927
1928 /* copy samples for viewing in editor window */
1929 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1930 {
1931     int size, len, channels;
1932
1933     channels = is->audio_st->codec->channels;
1934
1935     size = samples_size / sizeof(short);
1936     while (size > 0) {
1937         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1938         if (len > size)
1939             len = size;
1940         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1941         samples += len;
1942         is->sample_array_index += len;
1943         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1944             is->sample_array_index = 0;
1945         size -= len;
1946     }
1947 }
1948
1949 /* return the new audio buffer size (samples can be added or deleted
1950    to get better sync if video or external master clock) */
1951 static int synchronize_audio(VideoState *is, short *samples,
1952                              int samples_size1, double pts)
1953 {
1954     int n, samples_size;
1955     double ref_clock;
1956
1957     n = 2 * is->audio_st->codec->channels;
1958     samples_size = samples_size1;
1959
1960     /* if not master, then we try to remove or add samples to correct the clock */
1961     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1962          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1963         double diff, avg_diff;
1964         int wanted_size, min_size, max_size, nb_samples;
1965
1966         ref_clock = get_master_clock(is);
1967         diff = get_audio_clock(is) - ref_clock;
1968
1969         if (diff < AV_NOSYNC_THRESHOLD) {
1970             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1971             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1972                 /* not enough measures to have a correct estimate */
1973                 is->audio_diff_avg_count++;
1974             } else {
1975                 /* estimate the A-V difference */
1976                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1977
1978                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1979                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1980                     nb_samples = samples_size / n;
1981
1982                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1983                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1984                     if (wanted_size < min_size)
1985                         wanted_size = min_size;
1986                     else if (wanted_size > max_size)
1987                         wanted_size = max_size;
1988
1989                     /* add or remove samples to correction the synchro */
1990                     if (wanted_size < samples_size) {
1991                         /* remove samples */
1992                         samples_size = wanted_size;
1993                     } else if (wanted_size > samples_size) {
1994                         uint8_t *samples_end, *q;
1995                         int nb;
1996
1997                         /* add samples */
1998                         nb = (samples_size - wanted_size);
1999                         samples_end = (uint8_t *)samples + samples_size - n;
2000                         q = samples_end + n;
2001                         while (nb > 0) {
2002                             memcpy(q, samples_end, n);
2003                             q += n;
2004                             nb -= n;
2005                         }
2006                         samples_size = wanted_size;
2007                     }
2008                 }
2009 #if 0
2010                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
2011                        diff, avg_diff, samples_size - samples_size1,
2012                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
2013 #endif
2014             }
2015         } else {
2016             /* too big difference : may be initial PTS errors, so
2017                reset A-V filter */
2018             is->audio_diff_avg_count = 0;
2019             is->audio_diff_cum = 0;
2020         }
2021     }
2022
2023     return samples_size;
2024 }
2025
2026 /* decode one audio frame and returns its uncompressed size */
2027 static int audio_decode_frame(VideoState *is, double *pts_ptr)
2028 {
2029     AVPacket *pkt_temp = &is->audio_pkt_temp;
2030     AVPacket *pkt = &is->audio_pkt;
2031     AVCodecContext *dec= is->audio_st->codec;
2032     int n, len1, data_size;
2033     double pts;
2034
2035     for(;;) {
2036         /* NOTE: the audio packet can contain several frames */
2037         while (pkt_temp->size > 0) {
2038             data_size = sizeof(is->audio_buf1);
2039             len1 = avcodec_decode_audio3(dec,
2040                                         (int16_t *)is->audio_buf1, &data_size,
2041                                         pkt_temp);
2042             if (len1 < 0) {
2043                 /* if error, we skip the frame */
2044                 pkt_temp->size = 0;
2045                 break;
2046             }
2047
2048             pkt_temp->data += len1;
2049             pkt_temp->size -= len1;
2050             if (data_size <= 0)
2051                 continue;
2052
2053             if (dec->sample_fmt != is->audio_src_fmt) {
2054                 if (is->reformat_ctx)
2055                     av_audio_convert_free(is->reformat_ctx);
2056                 is->reformat_ctx= av_audio_convert_alloc(SAMPLE_FMT_S16, 1,
2057                                                          dec->sample_fmt, 1, NULL, 0);
2058                 if (!is->reformat_ctx) {
2059                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2060                         avcodec_get_sample_fmt_name(dec->sample_fmt),
2061                         avcodec_get_sample_fmt_name(SAMPLE_FMT_S16));
2062                         break;
2063                 }
2064                 is->audio_src_fmt= dec->sample_fmt;
2065             }
2066
2067             if (is->reformat_ctx) {
2068                 const void *ibuf[6]= {is->audio_buf1};
2069                 void *obuf[6]= {is->audio_buf2};
2070                 int istride[6]= {av_get_bits_per_sample_format(dec->sample_fmt)/8};
2071                 int ostride[6]= {2};
2072                 int len= data_size/istride[0];
2073                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2074                     printf("av_audio_convert() failed\n");
2075                     break;
2076                 }
2077                 is->audio_buf= is->audio_buf2;
2078                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2079                           remove this legacy cruft */
2080                 data_size= len*2;
2081             }else{
2082                 is->audio_buf= is->audio_buf1;
2083             }
2084
2085             /* if no pts, then compute it */
2086             pts = is->audio_clock;
2087             *pts_ptr = pts;
2088             n = 2 * dec->channels;
2089             is->audio_clock += (double)data_size /
2090                 (double)(n * dec->sample_rate);
2091 #if defined(DEBUG_SYNC)
2092             {
2093                 static double last_clock;
2094                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2095                        is->audio_clock - last_clock,
2096                        is->audio_clock, pts);
2097                 last_clock = is->audio_clock;
2098             }
2099 #endif
2100             return data_size;
2101         }
2102
2103         /* free the current packet */
2104         if (pkt->data)
2105             av_free_packet(pkt);
2106
2107         if (is->paused || is->audioq.abort_request) {
2108             return -1;
2109         }
2110
2111         /* read next packet */
2112         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2113             return -1;
2114         if(pkt->data == flush_pkt.data){
2115             avcodec_flush_buffers(dec);
2116             continue;
2117         }
2118
2119         pkt_temp->data = pkt->data;
2120         pkt_temp->size = pkt->size;
2121
2122         /* if update the audio clock with the pts */
2123         if (pkt->pts != AV_NOPTS_VALUE) {
2124             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2125         }
2126     }
2127 }
2128
2129 /* get the current audio output buffer size, in samples. With SDL, we
2130    cannot have a precise information */
2131 static int audio_write_get_buf_size(VideoState *is)
2132 {
2133     return is->audio_buf_size - is->audio_buf_index;
2134 }
2135
2136
2137 /* prepare a new audio buffer */
2138 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2139 {
2140     VideoState *is = opaque;
2141     int audio_size, len1;
2142     double pts;
2143
2144     audio_callback_time = av_gettime();
2145
2146     while (len > 0) {
2147         if (is->audio_buf_index >= is->audio_buf_size) {
2148            audio_size = audio_decode_frame(is, &pts);
2149            if (audio_size < 0) {
2150                 /* if error, just output silence */
2151                is->audio_buf = is->audio_buf1;
2152                is->audio_buf_size = 1024;
2153                memset(is->audio_buf, 0, is->audio_buf_size);
2154            } else {
2155                if (is->show_audio)
2156                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2157                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2158                                               pts);
2159                is->audio_buf_size = audio_size;
2160            }
2161            is->audio_buf_index = 0;
2162         }
2163         len1 = is->audio_buf_size - is->audio_buf_index;
2164         if (len1 > len)
2165             len1 = len;
2166         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2167         len -= len1;
2168         stream += len1;
2169         is->audio_buf_index += len1;
2170     }
2171 }
2172
2173 /* open a given stream. Return 0 if OK */
2174 static int stream_component_open(VideoState *is, int stream_index)
2175 {
2176     AVFormatContext *ic = is->ic;
2177     AVCodecContext *avctx;
2178     AVCodec *codec;
2179     SDL_AudioSpec wanted_spec, spec;
2180
2181     if (stream_index < 0 || stream_index >= ic->nb_streams)
2182         return -1;
2183     avctx = ic->streams[stream_index]->codec;
2184
2185     /* prepare audio output */
2186     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2187         if (avctx->channels > 0) {
2188             avctx->request_channels = FFMIN(2, avctx->channels);
2189         } else {
2190             avctx->request_channels = 2;
2191         }
2192     }
2193
2194     codec = avcodec_find_decoder(avctx->codec_id);
2195     avctx->debug_mv = debug_mv;
2196     avctx->debug = debug;
2197     avctx->workaround_bugs = workaround_bugs;
2198     avctx->lowres = lowres;
2199     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2200     avctx->idct_algo= idct;
2201     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2202     avctx->skip_frame= skip_frame;
2203     avctx->skip_idct= skip_idct;
2204     avctx->skip_loop_filter= skip_loop_filter;
2205     avctx->error_recognition= error_recognition;
2206     avctx->error_concealment= error_concealment;
2207     avcodec_thread_init(avctx, thread_count);
2208
2209     set_context_opts(avctx, avcodec_opts[avctx->codec_type], 0);
2210
2211     if (!codec ||
2212         avcodec_open(avctx, codec) < 0)
2213         return -1;
2214
2215     /* prepare audio output */
2216     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2217         wanted_spec.freq = avctx->sample_rate;
2218         wanted_spec.format = AUDIO_S16SYS;
2219         wanted_spec.channels = avctx->channels;
2220         wanted_spec.silence = 0;
2221         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2222         wanted_spec.callback = sdl_audio_callback;
2223         wanted_spec.userdata = is;
2224         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2225             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2226             return -1;
2227         }
2228         is->audio_hw_buf_size = spec.size;
2229         is->audio_src_fmt= SAMPLE_FMT_S16;
2230     }
2231
2232     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2233     switch(avctx->codec_type) {
2234     case AVMEDIA_TYPE_AUDIO:
2235         is->audio_stream = stream_index;
2236         is->audio_st = ic->streams[stream_index];
2237         is->audio_buf_size = 0;
2238         is->audio_buf_index = 0;
2239
2240         /* init averaging filter */
2241         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2242         is->audio_diff_avg_count = 0;
2243         /* since we do not have a precise anough audio fifo fullness,
2244            we correct audio sync only if larger than this threshold */
2245         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2246
2247         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2248         packet_queue_init(&is->audioq);
2249         SDL_PauseAudio(0);
2250         break;
2251     case AVMEDIA_TYPE_VIDEO:
2252         is->video_stream = stream_index;
2253         is->video_st = ic->streams[stream_index];
2254
2255 //        is->video_current_pts_time = av_gettime();
2256
2257         packet_queue_init(&is->videoq);
2258         is->video_tid = SDL_CreateThread(video_thread, is);
2259         break;
2260     case AVMEDIA_TYPE_SUBTITLE:
2261         is->subtitle_stream = stream_index;
2262         is->subtitle_st = ic->streams[stream_index];
2263         packet_queue_init(&is->subtitleq);
2264
2265         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2266         break;
2267     default:
2268         break;
2269     }
2270     return 0;
2271 }
2272
2273 static void stream_component_close(VideoState *is, int stream_index)
2274 {
2275     AVFormatContext *ic = is->ic;
2276     AVCodecContext *avctx;
2277
2278     if (stream_index < 0 || stream_index >= ic->nb_streams)
2279         return;
2280     avctx = ic->streams[stream_index]->codec;
2281
2282     switch(avctx->codec_type) {
2283     case AVMEDIA_TYPE_AUDIO:
2284         packet_queue_abort(&is->audioq);
2285
2286         SDL_CloseAudio();
2287
2288         packet_queue_end(&is->audioq);
2289         if (is->reformat_ctx)
2290             av_audio_convert_free(is->reformat_ctx);
2291         is->reformat_ctx = NULL;
2292         break;
2293     case AVMEDIA_TYPE_VIDEO:
2294         packet_queue_abort(&is->videoq);
2295
2296         /* note: we also signal this mutex to make sure we deblock the
2297            video thread in all cases */
2298         SDL_LockMutex(is->pictq_mutex);
2299         SDL_CondSignal(is->pictq_cond);
2300         SDL_UnlockMutex(is->pictq_mutex);
2301
2302         SDL_WaitThread(is->video_tid, NULL);
2303
2304         packet_queue_end(&is->videoq);
2305         break;
2306     case AVMEDIA_TYPE_SUBTITLE:
2307         packet_queue_abort(&is->subtitleq);
2308
2309         /* note: we also signal this mutex to make sure we deblock the
2310            video thread in all cases */
2311         SDL_LockMutex(is->subpq_mutex);
2312         is->subtitle_stream_changed = 1;
2313
2314         SDL_CondSignal(is->subpq_cond);
2315         SDL_UnlockMutex(is->subpq_mutex);
2316
2317         SDL_WaitThread(is->subtitle_tid, NULL);
2318
2319         packet_queue_end(&is->subtitleq);
2320         break;
2321     default:
2322         break;
2323     }
2324
2325     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2326     avcodec_close(avctx);
2327     switch(avctx->codec_type) {
2328     case AVMEDIA_TYPE_AUDIO:
2329         is->audio_st = NULL;
2330         is->audio_stream = -1;
2331         break;
2332     case AVMEDIA_TYPE_VIDEO:
2333         is->video_st = NULL;
2334         is->video_stream = -1;
2335         break;
2336     case AVMEDIA_TYPE_SUBTITLE:
2337         is->subtitle_st = NULL;
2338         is->subtitle_stream = -1;
2339         break;
2340     default:
2341         break;
2342     }
2343 }
2344
2345 /* since we have only one decoding thread, we can use a global
2346    variable instead of a thread local variable */
2347 static VideoState *global_video_state;
2348
2349 static int decode_interrupt_cb(void)
2350 {
2351     return (global_video_state && global_video_state->abort_request);
2352 }
2353
2354 /* this thread gets the stream from the disk or the network */
2355 static int decode_thread(void *arg)
2356 {
2357     VideoState *is = arg;
2358     AVFormatContext *ic;
2359     int err, i, ret;
2360     int st_index[AVMEDIA_TYPE_NB];
2361     int st_count[AVMEDIA_TYPE_NB]={0};
2362     int st_best_packet_count[AVMEDIA_TYPE_NB];
2363     AVPacket pkt1, *pkt = &pkt1;
2364     AVFormatParameters params, *ap = &params;
2365     int eof=0;
2366     int pkt_in_play_range = 0;
2367
2368     ic = avformat_alloc_context();
2369
2370     memset(st_index, -1, sizeof(st_index));
2371     memset(st_best_packet_count, -1, sizeof(st_best_packet_count));
2372     is->video_stream = -1;
2373     is->audio_stream = -1;
2374     is->subtitle_stream = -1;
2375
2376     global_video_state = is;
2377     url_set_interrupt_cb(decode_interrupt_cb);
2378
2379     memset(ap, 0, sizeof(*ap));
2380
2381     ap->prealloced_context = 1;
2382     ap->width = frame_width;
2383     ap->height= frame_height;
2384     ap->time_base= (AVRational){1, 25};
2385     ap->pix_fmt = frame_pix_fmt;
2386
2387     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);
2388
2389     err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
2390     if (err < 0) {
2391         print_error(is->filename, err);
2392         ret = -1;
2393         goto fail;
2394     }
2395     is->ic = ic;
2396
2397     if(genpts)
2398         ic->flags |= AVFMT_FLAG_GENPTS;
2399
2400     err = av_find_stream_info(ic);
2401     if (err < 0) {
2402         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2403         ret = -1;
2404         goto fail;
2405     }
2406     if(ic->pb)
2407         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2408
2409     if(seek_by_bytes<0)
2410         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2411
2412     /* if seeking requested, we execute it */
2413     if (start_time != AV_NOPTS_VALUE) {
2414         int64_t timestamp;
2415
2416         timestamp = start_time;
2417         /* add the stream start time */
2418         if (ic->start_time != AV_NOPTS_VALUE)
2419             timestamp += ic->start_time;
2420         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2421         if (ret < 0) {
2422             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2423                     is->filename, (double)timestamp / AV_TIME_BASE);
2424         }
2425     }
2426
2427     for(i = 0; i < ic->nb_streams; i++) {
2428         AVStream *st= ic->streams[i];
2429         AVCodecContext *avctx = st->codec;
2430         ic->streams[i]->discard = AVDISCARD_ALL;
2431         if(avctx->codec_type >= (unsigned)AVMEDIA_TYPE_NB)
2432             continue;
2433         if(st_count[avctx->codec_type]++ != wanted_stream[avctx->codec_type] && wanted_stream[avctx->codec_type] >= 0)
2434             continue;
2435
2436         if(st_best_packet_count[avctx->codec_type] >= st->codec_info_nb_frames)
2437             continue;
2438         st_best_packet_count[avctx->codec_type]= st->codec_info_nb_frames;
2439
2440         switch(avctx->codec_type) {
2441         case AVMEDIA_TYPE_AUDIO:
2442             if (!audio_disable)
2443                 st_index[AVMEDIA_TYPE_AUDIO] = i;
2444             break;
2445         case AVMEDIA_TYPE_VIDEO:
2446         case AVMEDIA_TYPE_SUBTITLE:
2447             if (!video_disable)
2448                 st_index[avctx->codec_type] = i;
2449             break;
2450         default:
2451             break;
2452         }
2453     }
2454     if (show_status) {
2455         dump_format(ic, 0, is->filename, 0);
2456     }
2457
2458     /* open the streams */
2459     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2460         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2461     }
2462
2463     ret=-1;
2464     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2465         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2466     }
2467     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2468     if(ret<0) {
2469         if (!display_disable)
2470             is->show_audio = 2;
2471     }
2472
2473     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2474         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2475     }
2476
2477     if (is->video_stream < 0 && is->audio_stream < 0) {
2478         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2479         ret = -1;
2480         goto fail;
2481     }
2482
2483     for(;;) {
2484         if (is->abort_request)
2485             break;
2486         if (is->paused != is->last_paused) {
2487             is->last_paused = is->paused;
2488             if (is->paused)
2489                 is->read_pause_return= av_read_pause(ic);
2490             else
2491                 av_read_play(ic);
2492         }
2493 #if CONFIG_RTSP_DEMUXER
2494         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2495             /* wait 10 ms to avoid trying to get another packet */
2496             /* XXX: horrible */
2497             SDL_Delay(10);
2498             continue;
2499         }
2500 #endif
2501         if (is->seek_req) {
2502             int64_t seek_target= is->seek_pos;
2503             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2504             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2505 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2506 //      of the seek_pos/seek_rel variables
2507
2508             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2509             if (ret < 0) {
2510                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2511             }else{
2512                 if (is->audio_stream >= 0) {
2513                     packet_queue_flush(&is->audioq);
2514                     packet_queue_put(&is->audioq, &flush_pkt);
2515                 }
2516                 if (is->subtitle_stream >= 0) {
2517                     packet_queue_flush(&is->subtitleq);
2518                     packet_queue_put(&is->subtitleq, &flush_pkt);
2519                 }
2520                 if (is->video_stream >= 0) {
2521                     packet_queue_flush(&is->videoq);
2522                     packet_queue_put(&is->videoq, &flush_pkt);
2523                 }
2524             }
2525             is->seek_req = 0;
2526             eof= 0;
2527         }
2528
2529         /* if the queue are full, no need to read more */
2530         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2531             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2532                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2533                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2534             /* wait 10 ms */
2535             SDL_Delay(10);
2536             continue;
2537         }
2538         if(url_feof(ic->pb) || eof) {
2539             if(is->video_stream >= 0){
2540                 av_init_packet(pkt);
2541                 pkt->data=NULL;
2542                 pkt->size=0;
2543                 pkt->stream_index= is->video_stream;
2544                 packet_queue_put(&is->videoq, pkt);
2545             }
2546             SDL_Delay(10);
2547             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2548                 if(loop!=1 && (!loop || --loop)){
2549                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2550                 }else if(autoexit){
2551                     ret=AVERROR_EOF;
2552                     goto fail;
2553                 }
2554             }
2555             continue;
2556         }
2557         ret = av_read_frame(ic, pkt);
2558         if (ret < 0) {
2559             if (ret == AVERROR_EOF)
2560                 eof=1;
2561             if (url_ferror(ic->pb))
2562                 break;
2563             SDL_Delay(100); /* wait for user event */
2564             continue;
2565         }
2566         /* check if packet is in play range specified by user, then queue, otherwise discard */
2567         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2568                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2569                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2570                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2571                 <= ((double)duration/1000000);
2572         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2573             packet_queue_put(&is->audioq, pkt);
2574         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2575             packet_queue_put(&is->videoq, pkt);
2576         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2577             packet_queue_put(&is->subtitleq, pkt);
2578         } else {
2579             av_free_packet(pkt);
2580         }
2581     }
2582     /* wait until the end */
2583     while (!is->abort_request) {
2584         SDL_Delay(100);
2585     }
2586
2587     ret = 0;
2588  fail:
2589     /* disable interrupting */
2590     global_video_state = NULL;
2591
2592     /* close each stream */
2593     if (is->audio_stream >= 0)
2594         stream_component_close(is, is->audio_stream);
2595     if (is->video_stream >= 0)
2596         stream_component_close(is, is->video_stream);
2597     if (is->subtitle_stream >= 0)
2598         stream_component_close(is, is->subtitle_stream);
2599     if (is->ic) {
2600         av_close_input_file(is->ic);
2601         is->ic = NULL; /* safety */
2602     }
2603     url_set_interrupt_cb(NULL);
2604
2605     if (ret != 0) {
2606         SDL_Event event;
2607
2608         event.type = FF_QUIT_EVENT;
2609         event.user.data1 = is;
2610         SDL_PushEvent(&event);
2611     }
2612     return 0;
2613 }
2614
2615 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2616 {
2617     VideoState *is;
2618
2619     is = av_mallocz(sizeof(VideoState));
2620     if (!is)
2621         return NULL;
2622     av_strlcpy(is->filename, filename, sizeof(is->filename));
2623     is->iformat = iformat;
2624     is->ytop = 0;
2625     is->xleft = 0;
2626
2627     /* start video display */
2628     is->pictq_mutex = SDL_CreateMutex();
2629     is->pictq_cond = SDL_CreateCond();
2630
2631     is->subpq_mutex = SDL_CreateMutex();
2632     is->subpq_cond = SDL_CreateCond();
2633
2634     is->av_sync_type = av_sync_type;
2635     is->parse_tid = SDL_CreateThread(decode_thread, is);
2636     if (!is->parse_tid) {
2637         av_free(is);
2638         return NULL;
2639     }
2640     return is;
2641 }
2642
2643 static void stream_close(VideoState *is)
2644 {
2645     VideoPicture *vp;
2646     int i;
2647     /* XXX: use a special url_shutdown call to abort parse cleanly */
2648     is->abort_request = 1;
2649     SDL_WaitThread(is->parse_tid, NULL);
2650     SDL_WaitThread(is->refresh_tid, NULL);
2651
2652     /* free all pictures */
2653     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2654         vp = &is->pictq[i];
2655 #if CONFIG_AVFILTER
2656         if (vp->picref) {
2657             avfilter_unref_pic(vp->picref);
2658             vp->picref = NULL;
2659         }
2660 #endif
2661         if (vp->bmp) {
2662             SDL_FreeYUVOverlay(vp->bmp);
2663             vp->bmp = NULL;
2664         }
2665     }
2666     SDL_DestroyMutex(is->pictq_mutex);
2667     SDL_DestroyCond(is->pictq_cond);
2668     SDL_DestroyMutex(is->subpq_mutex);
2669     SDL_DestroyCond(is->subpq_cond);
2670 #if !CONFIG_AVFILTER
2671     if (is->img_convert_ctx)
2672         sws_freeContext(is->img_convert_ctx);
2673 #endif
2674     av_free(is);
2675 }
2676
2677 static void stream_cycle_channel(VideoState *is, int codec_type)
2678 {
2679     AVFormatContext *ic = is->ic;
2680     int start_index, stream_index;
2681     AVStream *st;
2682
2683     if (codec_type == AVMEDIA_TYPE_VIDEO)
2684         start_index = is->video_stream;
2685     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2686         start_index = is->audio_stream;
2687     else
2688         start_index = is->subtitle_stream;
2689     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2690         return;
2691     stream_index = start_index;
2692     for(;;) {
2693         if (++stream_index >= is->ic->nb_streams)
2694         {
2695             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2696             {
2697                 stream_index = -1;
2698                 goto the_end;
2699             } else
2700                 stream_index = 0;
2701         }
2702         if (stream_index == start_index)
2703             return;
2704         st = ic->streams[stream_index];
2705         if (st->codec->codec_type == codec_type) {
2706             /* check that parameters are OK */
2707             switch(codec_type) {
2708             case AVMEDIA_TYPE_AUDIO:
2709                 if (st->codec->sample_rate != 0 &&
2710                     st->codec->channels != 0)
2711                     goto the_end;
2712                 break;
2713             case AVMEDIA_TYPE_VIDEO:
2714             case AVMEDIA_TYPE_SUBTITLE:
2715                 goto the_end;
2716             default:
2717                 break;
2718             }
2719         }
2720     }
2721  the_end:
2722     stream_component_close(is, start_index);
2723     stream_component_open(is, stream_index);
2724 }
2725
2726
2727 static void toggle_full_screen(void)
2728 {
2729     is_full_screen = !is_full_screen;
2730     if (!fs_screen_width) {
2731         /* use default SDL method */
2732 //        SDL_WM_ToggleFullScreen(screen);
2733     }
2734     video_open(cur_stream);
2735 }
2736
2737 static void toggle_pause(void)
2738 {
2739     if (cur_stream)
2740         stream_pause(cur_stream);
2741     step = 0;
2742 }
2743
2744 static void step_to_next_frame(void)
2745 {
2746     if (cur_stream) {
2747         /* if the stream is paused unpause it, then step */
2748         if (cur_stream->paused)
2749             stream_pause(cur_stream);
2750     }
2751     step = 1;
2752 }
2753
2754 static void do_exit(void)
2755 {
2756     int i;
2757     if (cur_stream) {
2758         stream_close(cur_stream);
2759         cur_stream = NULL;
2760     }
2761     for (i = 0; i < AVMEDIA_TYPE_NB; i++)
2762         av_free(avcodec_opts[i]);
2763     av_free(avformat_opts);
2764     av_free(sws_opts);
2765 #if CONFIG_AVFILTER
2766     avfilter_uninit();
2767 #endif
2768     if (show_status)
2769         printf("\n");
2770     SDL_Quit();
2771     exit(0);
2772 }
2773
2774 static void toggle_audio_display(void)
2775 {
2776     if (cur_stream) {
2777         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2778         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2779         fill_rectangle(screen,
2780                     cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2781                     bgcolor);
2782         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2783     }
2784 }
2785
2786 /* handle an event sent by the GUI */
2787 static void event_loop(void)
2788 {
2789     SDL_Event event;
2790     double incr, pos, frac;
2791
2792     for(;;) {
2793         double x;
2794         SDL_WaitEvent(&event);
2795         switch(event.type) {
2796         case SDL_KEYDOWN:
2797             switch(event.key.keysym.sym) {
2798             case SDLK_ESCAPE:
2799             case SDLK_q:
2800                 do_exit();
2801                 break;
2802             case SDLK_f:
2803                 toggle_full_screen();
2804                 break;
2805             case SDLK_p:
2806             case SDLK_SPACE:
2807                 toggle_pause();
2808                 break;
2809             case SDLK_s: //S: Step to next frame
2810                 step_to_next_frame();
2811                 break;
2812             case SDLK_a:
2813                 if (cur_stream)
2814                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2815                 break;
2816             case SDLK_v:
2817                 if (cur_stream)
2818                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2819                 break;
2820             case SDLK_t:
2821                 if (cur_stream)
2822                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2823                 break;
2824             case SDLK_w:
2825                 toggle_audio_display();
2826                 break;
2827             case SDLK_LEFT:
2828                 incr = -10.0;
2829                 goto do_seek;
2830             case SDLK_RIGHT:
2831                 incr = 10.0;
2832                 goto do_seek;
2833             case SDLK_UP:
2834                 incr = 60.0;
2835                 goto do_seek;
2836             case SDLK_DOWN:
2837                 incr = -60.0;
2838             do_seek:
2839                 if (cur_stream) {
2840                     if (seek_by_bytes) {
2841                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2842                             pos= cur_stream->video_current_pos;
2843                         }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2844                             pos= cur_stream->audio_pkt.pos;
2845                         }else
2846                             pos = url_ftell(cur_stream->ic->pb);
2847                         if (cur_stream->ic->bit_rate)
2848                             incr *= cur_stream->ic->bit_rate / 8.0;
2849                         else
2850                             incr *= 180000.0;
2851                         pos += incr;
2852                         stream_seek(cur_stream, pos, incr, 1);
2853                     } else {
2854                         pos = get_master_clock(cur_stream);
2855                         pos += incr;
2856                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2857                     }
2858                 }
2859                 break;
2860             default:
2861                 break;
2862             }
2863             break;
2864         case SDL_MOUSEBUTTONDOWN:
2865         case SDL_MOUSEMOTION:
2866             if(event.type ==SDL_MOUSEBUTTONDOWN){
2867                 x= event.button.x;
2868             }else{
2869                 if(event.motion.state != SDL_PRESSED)
2870                     break;
2871                 x= event.motion.x;
2872             }
2873             if (cur_stream) {
2874                 if(seek_by_bytes || cur_stream->ic->duration<=0){
2875                     uint64_t size=  url_fsize(cur_stream->ic->pb);
2876                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2877                 }else{
2878                     int64_t ts;
2879                     int ns, hh, mm, ss;
2880                     int tns, thh, tmm, tss;
2881                     tns = cur_stream->ic->duration/1000000LL;
2882                     thh = tns/3600;
2883                     tmm = (tns%3600)/60;
2884                     tss = (tns%60);
2885                     frac = x/cur_stream->width;
2886                     ns = frac*tns;
2887                     hh = ns/3600;
2888                     mm = (ns%3600)/60;
2889                     ss = (ns%60);
2890                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2891                             hh, mm, ss, thh, tmm, tss);
2892                     ts = frac*cur_stream->ic->duration;
2893                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2894                         ts += cur_stream->ic->start_time;
2895                     stream_seek(cur_stream, ts, 0, 0);
2896                 }
2897             }
2898             break;
2899         case SDL_VIDEORESIZE:
2900             if (cur_stream) {
2901                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2902                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2903                 screen_width = cur_stream->width = event.resize.w;
2904                 screen_height= cur_stream->height= event.resize.h;
2905             }
2906             break;
2907         case SDL_QUIT:
2908         case FF_QUIT_EVENT:
2909             do_exit();
2910             break;
2911         case FF_ALLOC_EVENT:
2912             video_open(event.user.data1);
2913             alloc_picture(event.user.data1);
2914             break;
2915         case FF_REFRESH_EVENT:
2916             video_refresh_timer(event.user.data1);
2917             cur_stream->refresh=0;
2918             break;
2919         default:
2920             break;
2921         }
2922     }
2923 }
2924
2925 static void opt_frame_size(const char *arg)
2926 {
2927     if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2928         fprintf(stderr, "Incorrect frame size\n");
2929         exit(1);
2930     }
2931     if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2932         fprintf(stderr, "Frame size must be a multiple of 2\n");
2933         exit(1);
2934     }
2935 }
2936
2937 static int opt_width(const char *opt, const char *arg)
2938 {
2939     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2940     return 0;
2941 }
2942
2943 static int opt_height(const char *opt, const char *arg)
2944 {
2945     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2946     return 0;
2947 }
2948
2949 static void opt_format(const char *arg)
2950 {
2951     file_iformat = av_find_input_format(arg);
2952     if (!file_iformat) {
2953         fprintf(stderr, "Unknown input format: %s\n", arg);
2954         exit(1);
2955     }
2956 }
2957
2958 static void opt_frame_pix_fmt(const char *arg)
2959 {
2960     frame_pix_fmt = av_get_pix_fmt(arg);
2961 }
2962
2963 static int opt_sync(const char *opt, const char *arg)
2964 {
2965     if (!strcmp(arg, "audio"))
2966         av_sync_type = AV_SYNC_AUDIO_MASTER;
2967     else if (!strcmp(arg, "video"))
2968         av_sync_type = AV_SYNC_VIDEO_MASTER;
2969     else if (!strcmp(arg, "ext"))
2970         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2971     else {
2972         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2973         exit(1);
2974     }
2975     return 0;
2976 }
2977
2978 static int opt_seek(const char *opt, const char *arg)
2979 {
2980     start_time = parse_time_or_die(opt, arg, 1);
2981     return 0;
2982 }
2983
2984 static int opt_duration(const char *opt, const char *arg)
2985 {
2986     duration = parse_time_or_die(opt, arg, 1);
2987     return 0;
2988 }
2989
2990 static int opt_debug(const char *opt, const char *arg)
2991 {
2992     av_log_set_level(99);
2993     debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2994     return 0;
2995 }
2996
2997 static int opt_vismv(const char *opt, const char *arg)
2998 {
2999     debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
3000     return 0;
3001 }
3002
3003 static int opt_thread_count(const char *opt, const char *arg)
3004 {
3005     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
3006 #if !HAVE_THREADS
3007     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
3008 #endif
3009     return 0;
3010 }
3011
3012 static const OptionDef options[] = {
3013 #include "cmdutils_common_opts.h"
3014     { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
3015     { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
3016     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
3017     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
3018     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
3019     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
3020     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
3021     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
3022     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
3023     { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
3024     { "t", HAS_ARG | OPT_FUNC2, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
3025     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
3026     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
3027     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
3028     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
3029     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
3030     { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
3031     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
3032     { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
3033     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
3034     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
3035     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3036     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
3037     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
3038     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
3039     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
3040     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
3041     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
3042     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
3043     { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
3044     { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
3045     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
3046     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
3047     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
3048     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
3049 #if CONFIG_AVFILTER
3050     { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
3051 #endif
3052     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
3053     { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
3054     { NULL, },
3055 };
3056
3057 static void show_usage(void)
3058 {
3059     printf("Simple media player\n");
3060     printf("usage: ffplay [options] input_file\n");
3061     printf("\n");
3062 }
3063
3064 static void show_help(void)
3065 {
3066     show_usage();
3067     show_help_options(options, "Main options:\n",
3068                       OPT_EXPERT, 0);
3069     show_help_options(options, "\nAdvanced options:\n",
3070                       OPT_EXPERT, OPT_EXPERT);
3071     printf("\nWhile playing:\n"
3072            "q, ESC              quit\n"
3073            "f                   toggle full screen\n"
3074            "p, SPC              pause\n"
3075            "a                   cycle audio channel\n"
3076            "v                   cycle video channel\n"
3077            "t                   cycle subtitle channel\n"
3078            "w                   show audio waves\n"
3079            "s                   activate frame-step mode\n"
3080            "left/right          seek backward/forward 10 seconds\n"
3081            "down/up             seek backward/forward 1 minute\n"
3082            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3083            );
3084 }
3085
3086 static void opt_input_file(const char *filename)
3087 {
3088     if (input_filename) {
3089         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3090                 filename, input_filename);
3091         exit(1);
3092     }
3093     if (!strcmp(filename, "-"))
3094         filename = "pipe:";
3095     input_filename = filename;
3096 }
3097
3098 /* Called from the main */
3099 int main(int argc, char **argv)
3100 {
3101     int flags, i;
3102
3103     /* register all codecs, demux and protocols */
3104     avcodec_register_all();
3105 #if CONFIG_AVDEVICE
3106     avdevice_register_all();
3107 #endif
3108 #if CONFIG_AVFILTER
3109     avfilter_register_all();
3110 #endif
3111     av_register_all();
3112
3113     for(i=0; i<AVMEDIA_TYPE_NB; i++){
3114         avcodec_opts[i]= avcodec_alloc_context2(i);
3115     }
3116     avformat_opts = avformat_alloc_context();
3117 #if !CONFIG_AVFILTER
3118     sws_opts = sws_getContext(16,16,0, 16,16,0, sws_flags, NULL,NULL,NULL);
3119 #endif
3120
3121     show_banner();
3122
3123     parse_options(argc, argv, options, opt_input_file);
3124
3125     if (!input_filename) {
3126         show_usage();
3127         fprintf(stderr, "An input file must be specified\n");
3128         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffplay'\n");
3129         exit(1);
3130     }
3131
3132     if (display_disable) {
3133         video_disable = 1;
3134     }
3135     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3136 #if !defined(__MINGW32__) && !defined(__APPLE__)
3137     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3138 #endif
3139     if (SDL_Init (flags)) {
3140         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3141         exit(1);
3142     }
3143
3144     if (!display_disable) {
3145 #if HAVE_SDL_VIDEO_SIZE
3146         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3147         fs_screen_width = vi->current_w;
3148         fs_screen_height = vi->current_h;
3149 #endif
3150     }
3151
3152     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3153     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3154     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3155
3156     av_init_packet(&flush_pkt);
3157     flush_pkt.data= "FLUSH";
3158
3159     cur_stream = stream_open(input_filename, file_iformat);
3160
3161     event_loop();
3162
3163     /* never returns */
3164
3165     return 0;
3166 }