40f6e142388f565e781f2325abbf3fa113a1e8c7
[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/colorspace.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavcore/parseutils.h"
30 #include "libavformat/avformat.h"
31 #include "libavdevice/avdevice.h"
32 #include "libswscale/swscale.h"
33 #include "libavcodec/audioconvert.h"
34 #include "libavcodec/opt.h"
35 #include "libavcodec/avfft.h"
36
37 #if CONFIG_AVFILTER
38 # include "libavfilter/avfilter.h"
39 # include "libavfilter/avfiltergraph.h"
40 # include "libavfilter/graphparser.h"
41 #endif
42
43 #include "cmdutils.h"
44
45 #include <SDL.h>
46 #include <SDL_thread.h>
47
48 #ifdef __MINGW32__
49 #undef main /* We don't want SDL to override our main() */
50 #endif
51
52 #include <unistd.h>
53 #include <assert.h>
54
55 const char program_name[] = "FFplay";
56 const int program_birth_year = 2003;
57
58 //#define DEBUG_SYNC
59
60 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
61 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
62 #define MIN_FRAMES 5
63
64 /* SDL audio buffer size, in samples. Should be small to have precise
65    A/V sync as SDL does not have hardware buffer fullness info. */
66 #define SDL_AUDIO_BUFFER_SIZE 1024
67
68 /* no AV sync correction is done if below the AV sync threshold */
69 #define AV_SYNC_THRESHOLD 0.01
70 /* no AV correction is done if too big error */
71 #define AV_NOSYNC_THRESHOLD 10.0
72
73 #define FRAME_SKIP_FACTOR 0.05
74
75 /* maximum audio speed change to get correct sync */
76 #define SAMPLE_CORRECTION_PERCENT_MAX 10
77
78 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
79 #define AUDIO_DIFF_AVG_NB   20
80
81 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
82 #define SAMPLE_ARRAY_SIZE (2*65536)
83
84 static int sws_flags = SWS_BICUBIC;
85
86 typedef struct PacketQueue {
87     AVPacketList *first_pkt, *last_pkt;
88     int nb_packets;
89     int size;
90     int abort_request;
91     SDL_mutex *mutex;
92     SDL_cond *cond;
93 } PacketQueue;
94
95 #define VIDEO_PICTURE_QUEUE_SIZE 2
96 #define SUBPICTURE_QUEUE_SIZE 4
97
98 typedef struct VideoPicture {
99     double pts;                                  ///<presentation time stamp for this picture
100     double target_clock;                         ///<av_gettime() time at which this should be displayed ideally
101     int64_t pos;                                 ///<byte position in file
102     SDL_Overlay *bmp;
103     int width, height; /* source height & width */
104     int allocated;
105     enum PixelFormat pix_fmt;
106
107 #if CONFIG_AVFILTER
108     AVFilterBufferRef *picref;
109 #endif
110 } VideoPicture;
111
112 typedef struct SubPicture {
113     double pts; /* presentation time stamp for this picture */
114     AVSubtitle sub;
115 } SubPicture;
116
117 enum {
118     AV_SYNC_AUDIO_MASTER, /* default choice */
119     AV_SYNC_VIDEO_MASTER,
120     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
121 };
122
123 typedef struct VideoState {
124     SDL_Thread *parse_tid;
125     SDL_Thread *video_tid;
126     SDL_Thread *refresh_tid;
127     AVInputFormat *iformat;
128     int no_background;
129     int abort_request;
130     int paused;
131     int last_paused;
132     int seek_req;
133     int seek_flags;
134     int64_t seek_pos;
135     int64_t seek_rel;
136     int read_pause_return;
137     AVFormatContext *ic;
138     int dtg_active_format;
139
140     int audio_stream;
141
142     int av_sync_type;
143     double external_clock; /* external clock base */
144     int64_t external_clock_time;
145
146     double audio_clock;
147     double audio_diff_cum; /* used for AV difference average computation */
148     double audio_diff_avg_coef;
149     double audio_diff_threshold;
150     int audio_diff_avg_count;
151     AVStream *audio_st;
152     PacketQueue audioq;
153     int audio_hw_buf_size;
154     /* samples output by the codec. we reserve more space for avsync
155        compensation */
156     DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
157     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
158     uint8_t *audio_buf;
159     unsigned int audio_buf_size; /* in bytes */
160     int audio_buf_index; /* in bytes */
161     AVPacket audio_pkt_temp;
162     AVPacket audio_pkt;
163     enum SampleFormat audio_src_fmt;
164     AVAudioConvert *reformat_ctx;
165
166     int show_audio; /* if true, display audio samples */
167     int16_t sample_array[SAMPLE_ARRAY_SIZE];
168     int sample_array_index;
169     int last_i_start;
170     RDFTContext *rdft;
171     int rdft_bits;
172     FFTSample *rdft_data;
173     int xpos;
174
175     SDL_Thread *subtitle_tid;
176     int subtitle_stream;
177     int subtitle_stream_changed;
178     AVStream *subtitle_st;
179     PacketQueue subtitleq;
180     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
181     int subpq_size, subpq_rindex, subpq_windex;
182     SDL_mutex *subpq_mutex;
183     SDL_cond *subpq_cond;
184
185     double frame_timer;
186     double frame_last_pts;
187     double frame_last_delay;
188     double video_clock;                          ///<pts of last decoded frame / predicted pts of next decoded frame
189     int video_stream;
190     AVStream *video_st;
191     PacketQueue videoq;
192     double video_current_pts;                    ///<current displayed pts (different from video_clock if frame fifos are used)
193     double video_current_pts_drift;              ///<video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
194     int64_t video_current_pos;                   ///<current displayed file pos
195     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
196     int pictq_size, pictq_rindex, pictq_windex;
197     SDL_mutex *pictq_mutex;
198     SDL_cond *pictq_cond;
199 #if !CONFIG_AVFILTER
200     struct SwsContext *img_convert_ctx;
201 #endif
202
203     //    QETimer *video_timer;
204     char filename[1024];
205     int width, height, xleft, ytop;
206
207     int64_t faulty_pts;
208     int64_t faulty_dts;
209     int64_t last_dts_for_fault_detection;
210     int64_t last_pts_for_fault_detection;
211
212 #if CONFIG_AVFILTER
213     AVFilterContext *out_video_filter;          ///<the last filter in the video chain
214 #endif
215
216     float skip_frames;
217     float skip_frames_index;
218     int refresh;
219 } VideoState;
220
221 static void show_help(void);
222 static int audio_write_get_buf_size(VideoState *is);
223
224 /* options specified by the user */
225 static AVInputFormat *file_iformat;
226 static const char *input_filename;
227 static const char *window_title;
228 static int fs_screen_width;
229 static int fs_screen_height;
230 static int screen_width = 0;
231 static int screen_height = 0;
232 static int frame_width = 0;
233 static int frame_height = 0;
234 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
235 static int audio_disable;
236 static int video_disable;
237 static int wanted_stream[AVMEDIA_TYPE_NB]={
238     [AVMEDIA_TYPE_AUDIO]=-1,
239     [AVMEDIA_TYPE_VIDEO]=-1,
240     [AVMEDIA_TYPE_SUBTITLE]=-1,
241 };
242 static int seek_by_bytes=-1;
243 static int display_disable;
244 static int show_status = 1;
245 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
246 static int64_t start_time = AV_NOPTS_VALUE;
247 static int64_t duration = AV_NOPTS_VALUE;
248 static int debug = 0;
249 static int debug_mv = 0;
250 static int step = 0;
251 static int thread_count = 1;
252 static int workaround_bugs = 1;
253 static int fast = 0;
254 static int genpts = 0;
255 static int lowres = 0;
256 static int idct = FF_IDCT_AUTO;
257 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
258 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
259 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
260 static int error_recognition = FF_ER_CAREFUL;
261 static int error_concealment = 3;
262 static int decoder_reorder_pts= -1;
263 static int autoexit;
264 static int exit_on_keydown;
265 static int exit_on_mousedown;
266 static int loop=1;
267 static int framedrop=1;
268
269 static int rdftspeed=20;
270 #if CONFIG_AVFILTER
271 static char *vfilters = NULL;
272 #endif
273
274 /* current context */
275 static int is_full_screen;
276 static VideoState *cur_stream;
277 static int64_t audio_callback_time;
278
279 static AVPacket flush_pkt;
280
281 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
282 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
283 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
284
285 static SDL_Surface *screen;
286
287 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
288
289 /* packet queue handling */
290 static void packet_queue_init(PacketQueue *q)
291 {
292     memset(q, 0, sizeof(PacketQueue));
293     q->mutex = SDL_CreateMutex();
294     q->cond = SDL_CreateCond();
295     packet_queue_put(q, &flush_pkt);
296 }
297
298 static void packet_queue_flush(PacketQueue *q)
299 {
300     AVPacketList *pkt, *pkt1;
301
302     SDL_LockMutex(q->mutex);
303     for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
304         pkt1 = pkt->next;
305         av_free_packet(&pkt->pkt);
306         av_freep(&pkt);
307     }
308     q->last_pkt = NULL;
309     q->first_pkt = NULL;
310     q->nb_packets = 0;
311     q->size = 0;
312     SDL_UnlockMutex(q->mutex);
313 }
314
315 static void packet_queue_end(PacketQueue *q)
316 {
317     packet_queue_flush(q);
318     SDL_DestroyMutex(q->mutex);
319     SDL_DestroyCond(q->cond);
320 }
321
322 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
323 {
324     AVPacketList *pkt1;
325
326     /* duplicate the packet */
327     if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
328         return -1;
329
330     pkt1 = av_malloc(sizeof(AVPacketList));
331     if (!pkt1)
332         return -1;
333     pkt1->pkt = *pkt;
334     pkt1->next = NULL;
335
336
337     SDL_LockMutex(q->mutex);
338
339     if (!q->last_pkt)
340
341         q->first_pkt = pkt1;
342     else
343         q->last_pkt->next = pkt1;
344     q->last_pkt = pkt1;
345     q->nb_packets++;
346     q->size += pkt1->pkt.size + sizeof(*pkt1);
347     /* XXX: should duplicate packet data in DV case */
348     SDL_CondSignal(q->cond);
349
350     SDL_UnlockMutex(q->mutex);
351     return 0;
352 }
353
354 static void packet_queue_abort(PacketQueue *q)
355 {
356     SDL_LockMutex(q->mutex);
357
358     q->abort_request = 1;
359
360     SDL_CondSignal(q->cond);
361
362     SDL_UnlockMutex(q->mutex);
363 }
364
365 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
366 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
367 {
368     AVPacketList *pkt1;
369     int ret;
370
371     SDL_LockMutex(q->mutex);
372
373     for(;;) {
374         if (q->abort_request) {
375             ret = -1;
376             break;
377         }
378
379         pkt1 = q->first_pkt;
380         if (pkt1) {
381             q->first_pkt = pkt1->next;
382             if (!q->first_pkt)
383                 q->last_pkt = NULL;
384             q->nb_packets--;
385             q->size -= pkt1->pkt.size + sizeof(*pkt1);
386             *pkt = pkt1->pkt;
387             av_free(pkt1);
388             ret = 1;
389             break;
390         } else if (!block) {
391             ret = 0;
392             break;
393         } else {
394             SDL_CondWait(q->cond, q->mutex);
395         }
396     }
397     SDL_UnlockMutex(q->mutex);
398     return ret;
399 }
400
401 static inline void fill_rectangle(SDL_Surface *screen,
402                                   int x, int y, int w, int h, int color)
403 {
404     SDL_Rect rect;
405     rect.x = x;
406     rect.y = y;
407     rect.w = w;
408     rect.h = h;
409     SDL_FillRect(screen, &rect, color);
410 }
411
412 #if 0
413 /* draw only the border of a rectangle */
414 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
415 {
416     int w1, w2, h1, h2;
417
418     /* fill the background */
419     w1 = x;
420     if (w1 < 0)
421         w1 = 0;
422     w2 = s->width - (x + w);
423     if (w2 < 0)
424         w2 = 0;
425     h1 = y;
426     if (h1 < 0)
427         h1 = 0;
428     h2 = s->height - (y + h);
429     if (h2 < 0)
430         h2 = 0;
431     fill_rectangle(screen,
432                    s->xleft, s->ytop,
433                    w1, s->height,
434                    color);
435     fill_rectangle(screen,
436                    s->xleft + s->width - w2, s->ytop,
437                    w2, s->height,
438                    color);
439     fill_rectangle(screen,
440                    s->xleft + w1, s->ytop,
441                    s->width - w1 - w2, h1,
442                    color);
443     fill_rectangle(screen,
444                    s->xleft + w1, s->ytop + s->height - h2,
445                    s->width - w1 - w2, h2,
446                    color);
447 }
448 #endif
449
450 #define ALPHA_BLEND(a, oldp, newp, s)\
451 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
452
453 #define RGBA_IN(r, g, b, a, s)\
454 {\
455     unsigned int v = ((const uint32_t *)(s))[0];\
456     a = (v >> 24) & 0xff;\
457     r = (v >> 16) & 0xff;\
458     g = (v >> 8) & 0xff;\
459     b = v & 0xff;\
460 }
461
462 #define YUVA_IN(y, u, v, a, s, pal)\
463 {\
464     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
465     a = (val >> 24) & 0xff;\
466     y = (val >> 16) & 0xff;\
467     u = (val >> 8) & 0xff;\
468     v = val & 0xff;\
469 }
470
471 #define YUVA_OUT(d, y, u, v, a)\
472 {\
473     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
474 }
475
476
477 #define BPP 1
478
479 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
480 {
481     int wrap, wrap3, width2, skip2;
482     int y, u, v, a, u1, v1, a1, w, h;
483     uint8_t *lum, *cb, *cr;
484     const uint8_t *p;
485     const uint32_t *pal;
486     int dstx, dsty, dstw, dsth;
487
488     dstw = av_clip(rect->w, 0, imgw);
489     dsth = av_clip(rect->h, 0, imgh);
490     dstx = av_clip(rect->x, 0, imgw - dstw);
491     dsty = av_clip(rect->y, 0, imgh - dsth);
492     lum = dst->data[0] + dsty * dst->linesize[0];
493     cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
494     cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
495
496     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
497     skip2 = dstx >> 1;
498     wrap = dst->linesize[0];
499     wrap3 = rect->pict.linesize[0];
500     p = rect->pict.data[0];
501     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
502
503     if (dsty & 1) {
504         lum += dstx;
505         cb += skip2;
506         cr += skip2;
507
508         if (dstx & 1) {
509             YUVA_IN(y, u, v, a, p, pal);
510             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
511             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
512             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
513             cb++;
514             cr++;
515             lum++;
516             p += BPP;
517         }
518         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
519             YUVA_IN(y, u, v, a, p, pal);
520             u1 = u;
521             v1 = v;
522             a1 = a;
523             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
524
525             YUVA_IN(y, u, v, a, p + BPP, pal);
526             u1 += u;
527             v1 += v;
528             a1 += a;
529             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
530             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
531             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
532             cb++;
533             cr++;
534             p += 2 * BPP;
535             lum += 2;
536         }
537         if (w) {
538             YUVA_IN(y, u, v, a, p, pal);
539             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
540             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
541             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
542             p++;
543             lum++;
544         }
545         p += wrap3 - dstw * BPP;
546         lum += wrap - dstw - dstx;
547         cb += dst->linesize[1] - width2 - skip2;
548         cr += dst->linesize[2] - width2 - skip2;
549     }
550     for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
551         lum += dstx;
552         cb += skip2;
553         cr += skip2;
554
555         if (dstx & 1) {
556             YUVA_IN(y, u, v, a, p, pal);
557             u1 = u;
558             v1 = v;
559             a1 = a;
560             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
561             p += wrap3;
562             lum += wrap;
563             YUVA_IN(y, u, v, a, p, pal);
564             u1 += u;
565             v1 += v;
566             a1 += a;
567             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
568             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
569             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
570             cb++;
571             cr++;
572             p += -wrap3 + BPP;
573             lum += -wrap + 1;
574         }
575         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
576             YUVA_IN(y, u, v, a, p, pal);
577             u1 = u;
578             v1 = v;
579             a1 = a;
580             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
581
582             YUVA_IN(y, u, v, a, p + BPP, pal);
583             u1 += u;
584             v1 += v;
585             a1 += a;
586             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
587             p += wrap3;
588             lum += wrap;
589
590             YUVA_IN(y, u, v, a, p, pal);
591             u1 += u;
592             v1 += v;
593             a1 += a;
594             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
595
596             YUVA_IN(y, u, v, a, p + BPP, pal);
597             u1 += u;
598             v1 += v;
599             a1 += a;
600             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
601
602             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
603             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
604
605             cb++;
606             cr++;
607             p += -wrap3 + 2 * BPP;
608             lum += -wrap + 2;
609         }
610         if (w) {
611             YUVA_IN(y, u, v, a, p, pal);
612             u1 = u;
613             v1 = v;
614             a1 = a;
615             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
616             p += wrap3;
617             lum += wrap;
618             YUVA_IN(y, u, v, a, p, pal);
619             u1 += u;
620             v1 += v;
621             a1 += a;
622             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
623             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
624             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
625             cb++;
626             cr++;
627             p += -wrap3 + BPP;
628             lum += -wrap + 1;
629         }
630         p += wrap3 + (wrap3 - dstw * BPP);
631         lum += wrap + (wrap - dstw - dstx);
632         cb += dst->linesize[1] - width2 - skip2;
633         cr += dst->linesize[2] - width2 - skip2;
634     }
635     /* handle odd height */
636     if (h) {
637         lum += dstx;
638         cb += skip2;
639         cr += skip2;
640
641         if (dstx & 1) {
642             YUVA_IN(y, u, v, a, p, pal);
643             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
644             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
645             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
646             cb++;
647             cr++;
648             lum++;
649             p += BPP;
650         }
651         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
652             YUVA_IN(y, u, v, a, p, pal);
653             u1 = u;
654             v1 = v;
655             a1 = a;
656             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
657
658             YUVA_IN(y, u, v, a, p + BPP, pal);
659             u1 += u;
660             v1 += v;
661             a1 += a;
662             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
663             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
664             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
665             cb++;
666             cr++;
667             p += 2 * BPP;
668             lum += 2;
669         }
670         if (w) {
671             YUVA_IN(y, u, v, a, p, pal);
672             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
673             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
674             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
675         }
676     }
677 }
678
679 static void free_subpicture(SubPicture *sp)
680 {
681     avsubtitle_free(&sp->sub);
682 }
683
684 static void video_image_display(VideoState *is)
685 {
686     VideoPicture *vp;
687     SubPicture *sp;
688     AVPicture pict;
689     float aspect_ratio;
690     int width, height, x, y;
691     SDL_Rect rect;
692     int i;
693
694     vp = &is->pictq[is->pictq_rindex];
695     if (vp->bmp) {
696 #if CONFIG_AVFILTER
697          if (vp->picref->video->pixel_aspect.num == 0)
698              aspect_ratio = 0;
699          else
700              aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
701 #else
702
703         /* XXX: use variable in the frame */
704         if (is->video_st->sample_aspect_ratio.num)
705             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
706         else if (is->video_st->codec->sample_aspect_ratio.num)
707             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
708         else
709             aspect_ratio = 0;
710 #endif
711         if (aspect_ratio <= 0.0)
712             aspect_ratio = 1.0;
713         aspect_ratio *= (float)vp->width / (float)vp->height;
714         /* if an active format is indicated, then it overrides the
715            mpeg format */
716 #if 0
717         if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
718             is->dtg_active_format = is->video_st->codec->dtg_active_format;
719             printf("dtg_active_format=%d\n", is->dtg_active_format);
720         }
721 #endif
722 #if 0
723         switch(is->video_st->codec->dtg_active_format) {
724         case FF_DTG_AFD_SAME:
725         default:
726             /* nothing to do */
727             break;
728         case FF_DTG_AFD_4_3:
729             aspect_ratio = 4.0 / 3.0;
730             break;
731         case FF_DTG_AFD_16_9:
732             aspect_ratio = 16.0 / 9.0;
733             break;
734         case FF_DTG_AFD_14_9:
735             aspect_ratio = 14.0 / 9.0;
736             break;
737         case FF_DTG_AFD_4_3_SP_14_9:
738             aspect_ratio = 14.0 / 9.0;
739             break;
740         case FF_DTG_AFD_16_9_SP_14_9:
741             aspect_ratio = 14.0 / 9.0;
742             break;
743         case FF_DTG_AFD_SP_4_3:
744             aspect_ratio = 4.0 / 3.0;
745             break;
746         }
747 #endif
748
749         if (is->subtitle_st)
750         {
751             if (is->subpq_size > 0)
752             {
753                 sp = &is->subpq[is->subpq_rindex];
754
755                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
756                 {
757                     SDL_LockYUVOverlay (vp->bmp);
758
759                     pict.data[0] = vp->bmp->pixels[0];
760                     pict.data[1] = vp->bmp->pixels[2];
761                     pict.data[2] = vp->bmp->pixels[1];
762
763                     pict.linesize[0] = vp->bmp->pitches[0];
764                     pict.linesize[1] = vp->bmp->pitches[2];
765                     pict.linesize[2] = vp->bmp->pitches[1];
766
767                     for (i = 0; i < sp->sub.num_rects; i++)
768                         blend_subrect(&pict, sp->sub.rects[i],
769                                       vp->bmp->w, vp->bmp->h);
770
771                     SDL_UnlockYUVOverlay (vp->bmp);
772                 }
773             }
774         }
775
776
777         /* XXX: we suppose the screen has a 1.0 pixel ratio */
778         height = is->height;
779         width = ((int)rint(height * aspect_ratio)) & ~1;
780         if (width > is->width) {
781             width = is->width;
782             height = ((int)rint(width / aspect_ratio)) & ~1;
783         }
784         x = (is->width - width) / 2;
785         y = (is->height - height) / 2;
786         if (!is->no_background) {
787             /* fill the background */
788             //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
789         } else {
790             is->no_background = 0;
791         }
792         rect.x = is->xleft + x;
793         rect.y = is->ytop  + y;
794         rect.w = width;
795         rect.h = height;
796         SDL_DisplayYUVOverlay(vp->bmp, &rect);
797     } else {
798 #if 0
799         fill_rectangle(screen,
800                        is->xleft, is->ytop, is->width, is->height,
801                        QERGB(0x00, 0x00, 0x00));
802 #endif
803     }
804 }
805
806 static inline int compute_mod(int a, int b)
807 {
808     a = a % b;
809     if (a >= 0)
810         return a;
811     else
812         return a + b;
813 }
814
815 static void video_audio_display(VideoState *s)
816 {
817     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
818     int ch, channels, h, h2, bgcolor, fgcolor;
819     int16_t time_diff;
820     int rdft_bits, nb_freq;
821
822     for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
823         ;
824     nb_freq= 1<<(rdft_bits-1);
825
826     /* compute display index : center on currently output samples */
827     channels = s->audio_st->codec->channels;
828     nb_display_channels = channels;
829     if (!s->paused) {
830         int data_used= s->show_audio==1 ? s->width : (2*nb_freq);
831         n = 2 * channels;
832         delay = audio_write_get_buf_size(s);
833         delay /= n;
834
835         /* to be more precise, we take into account the time spent since
836            the last buffer computation */
837         if (audio_callback_time) {
838             time_diff = av_gettime() - audio_callback_time;
839             delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
840         }
841
842         delay += 2*data_used;
843         if (delay < data_used)
844             delay = data_used;
845
846         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
847         if(s->show_audio==1){
848             h= INT_MIN;
849             for(i=0; i<1000; i+=channels){
850                 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
851                 int a= s->sample_array[idx];
852                 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
853                 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
854                 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
855                 int score= a-d;
856                 if(h<score && (b^c)<0){
857                     h= score;
858                     i_start= idx;
859                 }
860             }
861         }
862
863         s->last_i_start = i_start;
864     } else {
865         i_start = s->last_i_start;
866     }
867
868     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
869     if(s->show_audio==1){
870         fill_rectangle(screen,
871                        s->xleft, s->ytop, s->width, s->height,
872                        bgcolor);
873
874         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
875
876         /* total height for one channel */
877         h = s->height / nb_display_channels;
878         /* graph height / 2 */
879         h2 = (h * 9) / 20;
880         for(ch = 0;ch < nb_display_channels; ch++) {
881             i = i_start + ch;
882             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
883             for(x = 0; x < s->width; x++) {
884                 y = (s->sample_array[i] * h2) >> 15;
885                 if (y < 0) {
886                     y = -y;
887                     ys = y1 - y;
888                 } else {
889                     ys = y1;
890                 }
891                 fill_rectangle(screen,
892                                s->xleft + x, ys, 1, y,
893                                fgcolor);
894                 i += channels;
895                 if (i >= SAMPLE_ARRAY_SIZE)
896                     i -= SAMPLE_ARRAY_SIZE;
897             }
898         }
899
900         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
901
902         for(ch = 1;ch < nb_display_channels; ch++) {
903             y = s->ytop + ch * h;
904             fill_rectangle(screen,
905                            s->xleft, y, s->width, 1,
906                            fgcolor);
907         }
908         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
909     }else{
910         nb_display_channels= FFMIN(nb_display_channels, 2);
911         if(rdft_bits != s->rdft_bits){
912             av_rdft_end(s->rdft);
913             av_free(s->rdft_data);
914             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
915             s->rdft_bits= rdft_bits;
916             s->rdft_data= av_malloc(4*nb_freq*sizeof(*s->rdft_data));
917         }
918         {
919             FFTSample *data[2];
920             for(ch = 0;ch < nb_display_channels; ch++) {
921                 data[ch] = s->rdft_data + 2*nb_freq*ch;
922                 i = i_start + ch;
923                 for(x = 0; x < 2*nb_freq; x++) {
924                     double w= (x-nb_freq)*(1.0/nb_freq);
925                     data[ch][x]= s->sample_array[i]*(1.0-w*w);
926                     i += channels;
927                     if (i >= SAMPLE_ARRAY_SIZE)
928                         i -= SAMPLE_ARRAY_SIZE;
929                 }
930                 av_rdft_calc(s->rdft, data[ch]);
931             }
932             //least efficient way to do this, we should of course directly access it but its more than fast enough
933             for(y=0; y<s->height; y++){
934                 double w= 1/sqrt(nb_freq);
935                 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]));
936                 int b= (nb_display_channels == 2 ) ? sqrt(w*sqrt(data[1][2*y+0]*data[1][2*y+0]
937                        + data[1][2*y+1]*data[1][2*y+1])) : a;
938                 a= FFMIN(a,255);
939                 b= FFMIN(b,255);
940                 fgcolor = SDL_MapRGB(screen->format, a, b, (a+b)/2);
941
942                 fill_rectangle(screen,
943                             s->xpos, s->height-y, 1, 1,
944                             fgcolor);
945             }
946         }
947         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
948         s->xpos++;
949         if(s->xpos >= s->width)
950             s->xpos= s->xleft;
951     }
952 }
953
954 static int video_open(VideoState *is){
955     int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
956     int w,h;
957
958     if(is_full_screen) flags |= SDL_FULLSCREEN;
959     else               flags |= SDL_RESIZABLE;
960
961     if (is_full_screen && fs_screen_width) {
962         w = fs_screen_width;
963         h = fs_screen_height;
964     } else if(!is_full_screen && screen_width){
965         w = screen_width;
966         h = screen_height;
967 #if CONFIG_AVFILTER
968     }else if (is->out_video_filter && is->out_video_filter->inputs[0]){
969         w = is->out_video_filter->inputs[0]->w;
970         h = is->out_video_filter->inputs[0]->h;
971 #else
972     }else if (is->video_st && is->video_st->codec->width){
973         w = is->video_st->codec->width;
974         h = is->video_st->codec->height;
975 #endif
976     } else {
977         w = 640;
978         h = 480;
979     }
980     if(screen && is->width == screen->w && screen->w == w
981        && is->height== screen->h && screen->h == h)
982         return 0;
983
984 #ifndef __APPLE__
985     screen = SDL_SetVideoMode(w, h, 0, flags);
986 #else
987     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
988     screen = SDL_SetVideoMode(w, h, 24, flags);
989 #endif
990     if (!screen) {
991         fprintf(stderr, "SDL: could not set video mode - exiting\n");
992         return -1;
993     }
994     if (!window_title)
995         window_title = input_filename;
996     SDL_WM_SetCaption(window_title, window_title);
997
998     is->width = screen->w;
999     is->height = screen->h;
1000
1001     return 0;
1002 }
1003
1004 /* display the current picture, if any */
1005 static void video_display(VideoState *is)
1006 {
1007     if(!screen)
1008         video_open(cur_stream);
1009     if (is->audio_st && is->show_audio)
1010         video_audio_display(is);
1011     else if (is->video_st)
1012         video_image_display(is);
1013 }
1014
1015 static int refresh_thread(void *opaque)
1016 {
1017     VideoState *is= opaque;
1018     while(!is->abort_request){
1019     SDL_Event event;
1020     event.type = FF_REFRESH_EVENT;
1021     event.user.data1 = opaque;
1022         if(!is->refresh){
1023             is->refresh=1;
1024     SDL_PushEvent(&event);
1025         }
1026         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
1027     }
1028     return 0;
1029 }
1030
1031 /* get the current audio clock value */
1032 static double get_audio_clock(VideoState *is)
1033 {
1034     double pts;
1035     int hw_buf_size, bytes_per_sec;
1036     pts = is->audio_clock;
1037     hw_buf_size = audio_write_get_buf_size(is);
1038     bytes_per_sec = 0;
1039     if (is->audio_st) {
1040         bytes_per_sec = is->audio_st->codec->sample_rate *
1041             2 * is->audio_st->codec->channels;
1042     }
1043     if (bytes_per_sec)
1044         pts -= (double)hw_buf_size / bytes_per_sec;
1045     return pts;
1046 }
1047
1048 /* get the current video clock value */
1049 static double get_video_clock(VideoState *is)
1050 {
1051     if (is->paused) {
1052         return is->video_current_pts;
1053     } else {
1054         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1055     }
1056 }
1057
1058 /* get the current external clock value */
1059 static double get_external_clock(VideoState *is)
1060 {
1061     int64_t ti;
1062     ti = av_gettime();
1063     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1064 }
1065
1066 /* get the current master clock value */
1067 static double get_master_clock(VideoState *is)
1068 {
1069     double val;
1070
1071     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1072         if (is->video_st)
1073             val = get_video_clock(is);
1074         else
1075             val = get_audio_clock(is);
1076     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1077         if (is->audio_st)
1078             val = get_audio_clock(is);
1079         else
1080             val = get_video_clock(is);
1081     } else {
1082         val = get_external_clock(is);
1083     }
1084     return val;
1085 }
1086
1087 /* seek in the stream */
1088 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1089 {
1090     if (!is->seek_req) {
1091         is->seek_pos = pos;
1092         is->seek_rel = rel;
1093         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1094         if (seek_by_bytes)
1095             is->seek_flags |= AVSEEK_FLAG_BYTE;
1096         is->seek_req = 1;
1097     }
1098 }
1099
1100 /* pause or resume the video */
1101 static void stream_pause(VideoState *is)
1102 {
1103     if (is->paused) {
1104         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1105         if(is->read_pause_return != AVERROR(ENOSYS)){
1106             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1107         }
1108         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1109     }
1110     is->paused = !is->paused;
1111 }
1112
1113 static double compute_target_time(double frame_current_pts, VideoState *is)
1114 {
1115     double delay, sync_threshold, diff;
1116
1117     /* compute nominal delay */
1118     delay = frame_current_pts - is->frame_last_pts;
1119     if (delay <= 0 || delay >= 10.0) {
1120         /* if incorrect delay, use previous one */
1121         delay = is->frame_last_delay;
1122     } else {
1123         is->frame_last_delay = delay;
1124     }
1125     is->frame_last_pts = frame_current_pts;
1126
1127     /* update delay to follow master synchronisation source */
1128     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1129          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1130         /* if video is slave, we try to correct big delays by
1131            duplicating or deleting a frame */
1132         diff = get_video_clock(is) - get_master_clock(is);
1133
1134         /* skip or repeat frame. We take into account the
1135            delay to compute the threshold. I still don't know
1136            if it is the best guess */
1137         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1138         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1139             if (diff <= -sync_threshold)
1140                 delay = 0;
1141             else if (diff >= sync_threshold)
1142                 delay = 2 * delay;
1143         }
1144     }
1145     is->frame_timer += delay;
1146 #if defined(DEBUG_SYNC)
1147     printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1148             delay, actual_delay, frame_current_pts, -diff);
1149 #endif
1150
1151     return is->frame_timer;
1152 }
1153
1154 /* called to display each frame */
1155 static void video_refresh_timer(void *opaque)
1156 {
1157     VideoState *is = opaque;
1158     VideoPicture *vp;
1159
1160     SubPicture *sp, *sp2;
1161
1162     if (is->video_st) {
1163 retry:
1164         if (is->pictq_size == 0) {
1165             //nothing to do, no picture to display in the que
1166         } else {
1167             double time= av_gettime()/1000000.0;
1168             double next_target;
1169             /* dequeue the picture */
1170             vp = &is->pictq[is->pictq_rindex];
1171
1172             if(time < vp->target_clock)
1173                 return;
1174             /* update current video pts */
1175             is->video_current_pts = vp->pts;
1176             is->video_current_pts_drift = is->video_current_pts - time;
1177             is->video_current_pos = vp->pos;
1178             if(is->pictq_size > 1){
1179                 VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
1180                 assert(nextvp->target_clock >= vp->target_clock);
1181                 next_target= nextvp->target_clock;
1182             }else{
1183                 next_target= vp->target_clock + is->video_clock - vp->pts; //FIXME pass durations cleanly
1184             }
1185             if(framedrop && time > next_target){
1186                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1187                 if(is->pictq_size > 1 || time > next_target + 0.5){
1188                     /* update queue size and signal for next picture */
1189                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1190                         is->pictq_rindex = 0;
1191
1192                     SDL_LockMutex(is->pictq_mutex);
1193                     is->pictq_size--;
1194                     SDL_CondSignal(is->pictq_cond);
1195                     SDL_UnlockMutex(is->pictq_mutex);
1196                     goto retry;
1197                 }
1198             }
1199
1200             if(is->subtitle_st) {
1201                 if (is->subtitle_stream_changed) {
1202                     SDL_LockMutex(is->subpq_mutex);
1203
1204                     while (is->subpq_size) {
1205                         free_subpicture(&is->subpq[is->subpq_rindex]);
1206
1207                         /* update queue size and signal for next picture */
1208                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1209                             is->subpq_rindex = 0;
1210
1211                         is->subpq_size--;
1212                     }
1213                     is->subtitle_stream_changed = 0;
1214
1215                     SDL_CondSignal(is->subpq_cond);
1216                     SDL_UnlockMutex(is->subpq_mutex);
1217                 } else {
1218                     if (is->subpq_size > 0) {
1219                         sp = &is->subpq[is->subpq_rindex];
1220
1221                         if (is->subpq_size > 1)
1222                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1223                         else
1224                             sp2 = NULL;
1225
1226                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1227                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1228                         {
1229                             free_subpicture(sp);
1230
1231                             /* update queue size and signal for next picture */
1232                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1233                                 is->subpq_rindex = 0;
1234
1235                             SDL_LockMutex(is->subpq_mutex);
1236                             is->subpq_size--;
1237                             SDL_CondSignal(is->subpq_cond);
1238                             SDL_UnlockMutex(is->subpq_mutex);
1239                         }
1240                     }
1241                 }
1242             }
1243
1244             /* display picture */
1245             video_display(is);
1246
1247             /* update queue size and signal for next picture */
1248             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1249                 is->pictq_rindex = 0;
1250
1251             SDL_LockMutex(is->pictq_mutex);
1252             is->pictq_size--;
1253             SDL_CondSignal(is->pictq_cond);
1254             SDL_UnlockMutex(is->pictq_mutex);
1255         }
1256     } else if (is->audio_st) {
1257         /* draw the next audio frame */
1258
1259         /* if only audio stream, then display the audio bars (better
1260            than nothing, just to test the implementation */
1261
1262         /* display picture */
1263         video_display(is);
1264     }
1265     if (show_status) {
1266         static int64_t last_time;
1267         int64_t cur_time;
1268         int aqsize, vqsize, sqsize;
1269         double av_diff;
1270
1271         cur_time = av_gettime();
1272         if (!last_time || (cur_time - last_time) >= 30000) {
1273             aqsize = 0;
1274             vqsize = 0;
1275             sqsize = 0;
1276             if (is->audio_st)
1277                 aqsize = is->audioq.size;
1278             if (is->video_st)
1279                 vqsize = is->videoq.size;
1280             if (is->subtitle_st)
1281                 sqsize = is->subtitleq.size;
1282             av_diff = 0;
1283             if (is->audio_st && is->video_st)
1284                 av_diff = get_audio_clock(is) - get_video_clock(is);
1285             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1286                    get_master_clock(is), av_diff, FFMAX(is->skip_frames-1, 0), aqsize / 1024, vqsize / 1024, sqsize, is->faulty_dts, is->faulty_pts);
1287             fflush(stdout);
1288             last_time = cur_time;
1289         }
1290     }
1291 }
1292
1293 /* allocate a picture (needs to do that in main thread to avoid
1294    potential locking problems */
1295 static void alloc_picture(void *opaque)
1296 {
1297     VideoState *is = opaque;
1298     VideoPicture *vp;
1299
1300     vp = &is->pictq[is->pictq_windex];
1301
1302     if (vp->bmp)
1303         SDL_FreeYUVOverlay(vp->bmp);
1304
1305 #if CONFIG_AVFILTER
1306     if (vp->picref)
1307         avfilter_unref_buffer(vp->picref);
1308     vp->picref = NULL;
1309
1310     vp->width   = is->out_video_filter->inputs[0]->w;
1311     vp->height  = is->out_video_filter->inputs[0]->h;
1312     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1313 #else
1314     vp->width   = is->video_st->codec->width;
1315     vp->height  = is->video_st->codec->height;
1316     vp->pix_fmt = is->video_st->codec->pix_fmt;
1317 #endif
1318
1319     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1320                                    SDL_YV12_OVERLAY,
1321                                    screen);
1322
1323     SDL_LockMutex(is->pictq_mutex);
1324     vp->allocated = 1;
1325     SDL_CondSignal(is->pictq_cond);
1326     SDL_UnlockMutex(is->pictq_mutex);
1327 }
1328
1329 /**
1330  *
1331  * @param pts the dts of the pkt / pts of the frame and guessed if not known
1332  */
1333 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1334 {
1335     VideoPicture *vp;
1336     int dst_pix_fmt;
1337 #if CONFIG_AVFILTER
1338     AVPicture pict_src;
1339 #endif
1340     /* wait until we have space to put a new picture */
1341     SDL_LockMutex(is->pictq_mutex);
1342
1343     if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1344         is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
1345
1346     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1347            !is->videoq.abort_request) {
1348         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1349     }
1350     SDL_UnlockMutex(is->pictq_mutex);
1351
1352     if (is->videoq.abort_request)
1353         return -1;
1354
1355     vp = &is->pictq[is->pictq_windex];
1356
1357     /* alloc or resize hardware picture buffer */
1358     if (!vp->bmp ||
1359 #if CONFIG_AVFILTER
1360         vp->width  != is->out_video_filter->inputs[0]->w ||
1361         vp->height != is->out_video_filter->inputs[0]->h) {
1362 #else
1363         vp->width != is->video_st->codec->width ||
1364         vp->height != is->video_st->codec->height) {
1365 #endif
1366         SDL_Event event;
1367
1368         vp->allocated = 0;
1369
1370         /* the allocation must be done in the main thread to avoid
1371            locking problems */
1372         event.type = FF_ALLOC_EVENT;
1373         event.user.data1 = is;
1374         SDL_PushEvent(&event);
1375
1376         /* wait until the picture is allocated */
1377         SDL_LockMutex(is->pictq_mutex);
1378         while (!vp->allocated && !is->videoq.abort_request) {
1379             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1380         }
1381         SDL_UnlockMutex(is->pictq_mutex);
1382
1383         if (is->videoq.abort_request)
1384             return -1;
1385     }
1386
1387     /* if the frame is not skipped, then display it */
1388     if (vp->bmp) {
1389         AVPicture pict;
1390 #if CONFIG_AVFILTER
1391         if(vp->picref)
1392             avfilter_unref_buffer(vp->picref);
1393         vp->picref = src_frame->opaque;
1394 #endif
1395
1396         /* get a pointer on the bitmap */
1397         SDL_LockYUVOverlay (vp->bmp);
1398
1399         dst_pix_fmt = PIX_FMT_YUV420P;
1400         memset(&pict,0,sizeof(AVPicture));
1401         pict.data[0] = vp->bmp->pixels[0];
1402         pict.data[1] = vp->bmp->pixels[2];
1403         pict.data[2] = vp->bmp->pixels[1];
1404
1405         pict.linesize[0] = vp->bmp->pitches[0];
1406         pict.linesize[1] = vp->bmp->pitches[2];
1407         pict.linesize[2] = vp->bmp->pitches[1];
1408
1409 #if CONFIG_AVFILTER
1410         pict_src.data[0] = src_frame->data[0];
1411         pict_src.data[1] = src_frame->data[1];
1412         pict_src.data[2] = src_frame->data[2];
1413
1414         pict_src.linesize[0] = src_frame->linesize[0];
1415         pict_src.linesize[1] = src_frame->linesize[1];
1416         pict_src.linesize[2] = src_frame->linesize[2];
1417
1418         //FIXME use direct rendering
1419         av_picture_copy(&pict, &pict_src,
1420                         vp->pix_fmt, vp->width, vp->height);
1421 #else
1422         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1423         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1424             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1425             dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1426         if (is->img_convert_ctx == NULL) {
1427             fprintf(stderr, "Cannot initialize the conversion context\n");
1428             exit(1);
1429         }
1430         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1431                   0, vp->height, pict.data, pict.linesize);
1432 #endif
1433         /* update the bitmap content */
1434         SDL_UnlockYUVOverlay(vp->bmp);
1435
1436         vp->pts = pts;
1437         vp->pos = pos;
1438
1439         /* now we can update the picture count */
1440         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1441             is->pictq_windex = 0;
1442         SDL_LockMutex(is->pictq_mutex);
1443         vp->target_clock= compute_target_time(vp->pts, is);
1444
1445         is->pictq_size++;
1446         SDL_UnlockMutex(is->pictq_mutex);
1447     }
1448     return 0;
1449 }
1450
1451 /**
1452  * compute the exact PTS for the picture if it is omitted in the stream
1453  * @param pts1 the dts of the pkt / pts of the frame
1454  */
1455 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1456 {
1457     double frame_delay, pts;
1458
1459     pts = pts1;
1460
1461     if (pts != 0) {
1462         /* update video clock with pts, if present */
1463         is->video_clock = pts;
1464     } else {
1465         pts = is->video_clock;
1466     }
1467     /* update video clock for next frame */
1468     frame_delay = av_q2d(is->video_st->codec->time_base);
1469     /* for MPEG2, the frame can be repeated, so we update the
1470        clock accordingly */
1471     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1472     is->video_clock += frame_delay;
1473
1474 #if defined(DEBUG_SYNC) && 0
1475     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1476            av_get_pict_type_char(src_frame->pict_type), pts, pts1);
1477 #endif
1478     return queue_picture(is, src_frame, pts, pos);
1479 }
1480
1481 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1482 {
1483     int len1, got_picture, i;
1484
1485         if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1486             return -1;
1487
1488         if(pkt->data == flush_pkt.data){
1489             avcodec_flush_buffers(is->video_st->codec);
1490
1491             SDL_LockMutex(is->pictq_mutex);
1492             //Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1493             for(i=0; i<VIDEO_PICTURE_QUEUE_SIZE; i++){
1494                 is->pictq[i].target_clock= 0;
1495             }
1496             while (is->pictq_size && !is->videoq.abort_request) {
1497                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1498             }
1499             is->video_current_pos= -1;
1500             SDL_UnlockMutex(is->pictq_mutex);
1501
1502             is->last_dts_for_fault_detection=
1503             is->last_pts_for_fault_detection= INT64_MIN;
1504             is->frame_last_pts= AV_NOPTS_VALUE;
1505             is->frame_last_delay = 0;
1506             is->frame_timer = (double)av_gettime() / 1000000.0;
1507             is->skip_frames= 1;
1508             is->skip_frames_index= 0;
1509             return 0;
1510         }
1511
1512         /* NOTE: ipts is the PTS of the _first_ picture beginning in
1513            this packet, if any */
1514         is->video_st->codec->reordered_opaque= pkt->pts;
1515         len1 = avcodec_decode_video2(is->video_st->codec,
1516                                     frame, &got_picture,
1517                                     pkt);
1518
1519         if (got_picture) {
1520             if(pkt->dts != AV_NOPTS_VALUE){
1521                 is->faulty_dts += pkt->dts <= is->last_dts_for_fault_detection;
1522                 is->last_dts_for_fault_detection= pkt->dts;
1523             }
1524             if(frame->reordered_opaque != AV_NOPTS_VALUE){
1525                 is->faulty_pts += frame->reordered_opaque <= is->last_pts_for_fault_detection;
1526                 is->last_pts_for_fault_detection= frame->reordered_opaque;
1527             }
1528         }
1529
1530         if(   (   decoder_reorder_pts==1
1531                || (decoder_reorder_pts && is->faulty_pts<is->faulty_dts)
1532                || pkt->dts == AV_NOPTS_VALUE)
1533            && frame->reordered_opaque != AV_NOPTS_VALUE)
1534             *pts= frame->reordered_opaque;
1535         else if(pkt->dts != AV_NOPTS_VALUE)
1536             *pts= pkt->dts;
1537         else
1538             *pts= 0;
1539
1540 //            if (len1 < 0)
1541 //                break;
1542     if (got_picture){
1543         is->skip_frames_index += 1;
1544         if(is->skip_frames_index >= is->skip_frames){
1545             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1546             return 1;
1547         }
1548
1549     }
1550     return 0;
1551 }
1552
1553 #if CONFIG_AVFILTER
1554 typedef struct {
1555     VideoState *is;
1556     AVFrame *frame;
1557     int use_dr1;
1558 } FilterPriv;
1559
1560 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1561 {
1562     AVFilterContext *ctx = codec->opaque;
1563     AVFilterBufferRef  *ref;
1564     int perms = AV_PERM_WRITE;
1565     int i, w, h, stride[4];
1566     unsigned edge;
1567
1568     if(pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1569         if(pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1570         if(pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1571         if(pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1572     }
1573     if(pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1574
1575     w = codec->width;
1576     h = codec->height;
1577     avcodec_align_dimensions2(codec, &w, &h, stride);
1578     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1579     w += edge << 1;
1580     h += edge << 1;
1581
1582     if(!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1583         return -1;
1584
1585     ref->video->w = codec->width;
1586     ref->video->h = codec->height;
1587     for(i = 0; i < 4; i ++) {
1588         unsigned hshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_w : 0;
1589         unsigned vshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_h : 0;
1590
1591         if (ref->data[i]) {
1592             ref->data[i]    += (edge >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1593         }
1594         pic->data[i]     = ref->data[i];
1595         pic->linesize[i] = ref->linesize[i];
1596     }
1597     pic->opaque = ref;
1598     pic->age    = INT_MAX;
1599     pic->type   = FF_BUFFER_TYPE_USER;
1600     pic->reordered_opaque = codec->reordered_opaque;
1601     return 0;
1602 }
1603
1604 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1605 {
1606     memset(pic->data, 0, sizeof(pic->data));
1607     avfilter_unref_buffer(pic->opaque);
1608 }
1609
1610 static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
1611 {
1612     AVFilterBufferRef *ref = pic->opaque;
1613
1614     if (pic->data[0] == NULL) {
1615         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
1616         return codec->get_buffer(codec, pic);
1617     }
1618
1619     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||
1620         (codec->pix_fmt != ref->format)) {
1621         av_log(codec, AV_LOG_ERROR, "Picture properties changed.\n");
1622         return -1;
1623     }
1624
1625     pic->reordered_opaque = codec->reordered_opaque;
1626     return 0;
1627 }
1628
1629 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1630 {
1631     FilterPriv *priv = ctx->priv;
1632     AVCodecContext *codec;
1633     if(!opaque) return -1;
1634
1635     priv->is = opaque;
1636     codec    = priv->is->video_st->codec;
1637     codec->opaque = ctx;
1638     if(codec->codec->capabilities & CODEC_CAP_DR1) {
1639         priv->use_dr1 = 1;
1640         codec->get_buffer     = input_get_buffer;
1641         codec->release_buffer = input_release_buffer;
1642         codec->reget_buffer   = input_reget_buffer;
1643     }
1644
1645     priv->frame = avcodec_alloc_frame();
1646
1647     return 0;
1648 }
1649
1650 static void input_uninit(AVFilterContext *ctx)
1651 {
1652     FilterPriv *priv = ctx->priv;
1653     av_free(priv->frame);
1654 }
1655
1656 static int input_request_frame(AVFilterLink *link)
1657 {
1658     FilterPriv *priv = link->src->priv;
1659     AVFilterBufferRef *picref;
1660     int64_t pts = 0;
1661     AVPacket pkt;
1662     int ret;
1663
1664     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1665         av_free_packet(&pkt);
1666     if (ret < 0)
1667         return -1;
1668
1669     if(priv->use_dr1) {
1670         picref = avfilter_ref_buffer(priv->frame->opaque, ~0);
1671     } else {
1672         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1673         av_picture_copy((AVPicture *)&picref->data, (AVPicture *)priv->frame,
1674                         picref->format, link->w, link->h);
1675     }
1676     av_free_packet(&pkt);
1677
1678     picref->pts = pts;
1679     picref->pos = pkt.pos;
1680     picref->video->pixel_aspect = priv->is->video_st->codec->sample_aspect_ratio;
1681     avfilter_start_frame(link, picref);
1682     avfilter_draw_slice(link, 0, link->h, 1);
1683     avfilter_end_frame(link);
1684
1685     return 0;
1686 }
1687
1688 static int input_query_formats(AVFilterContext *ctx)
1689 {
1690     FilterPriv *priv = ctx->priv;
1691     enum PixelFormat pix_fmts[] = {
1692         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1693     };
1694
1695     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1696     return 0;
1697 }
1698
1699 static int input_config_props(AVFilterLink *link)
1700 {
1701     FilterPriv *priv  = link->src->priv;
1702     AVCodecContext *c = priv->is->video_st->codec;
1703
1704     link->w = c->width;
1705     link->h = c->height;
1706
1707     return 0;
1708 }
1709
1710 static AVFilter input_filter =
1711 {
1712     .name      = "ffplay_input",
1713
1714     .priv_size = sizeof(FilterPriv),
1715
1716     .init      = input_init,
1717     .uninit    = input_uninit,
1718
1719     .query_formats = input_query_formats,
1720
1721     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1722     .outputs   = (AVFilterPad[]) {{ .name = "default",
1723                                     .type = AVMEDIA_TYPE_VIDEO,
1724                                     .request_frame = input_request_frame,
1725                                     .config_props  = input_config_props, },
1726                                   { .name = NULL }},
1727 };
1728
1729 static void output_end_frame(AVFilterLink *link)
1730 {
1731 }
1732
1733 static int output_query_formats(AVFilterContext *ctx)
1734 {
1735     enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1736
1737     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1738     return 0;
1739 }
1740
1741 static int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
1742                                     int64_t *pts, int64_t *pos)
1743 {
1744     AVFilterBufferRef *pic;
1745
1746     if(avfilter_request_frame(ctx->inputs[0]))
1747         return -1;
1748     if(!(pic = ctx->inputs[0]->cur_buf))
1749         return -1;
1750     ctx->inputs[0]->cur_buf = NULL;
1751
1752     frame->opaque = pic;
1753     *pts          = pic->pts;
1754     *pos          = pic->pos;
1755
1756     memcpy(frame->data,     pic->data,     sizeof(frame->data));
1757     memcpy(frame->linesize, pic->linesize, sizeof(frame->linesize));
1758
1759     return 1;
1760 }
1761
1762 static AVFilter output_filter =
1763 {
1764     .name      = "ffplay_output",
1765
1766     .query_formats = output_query_formats,
1767
1768     .inputs    = (AVFilterPad[]) {{ .name          = "default",
1769                                     .type          = AVMEDIA_TYPE_VIDEO,
1770                                     .end_frame     = output_end_frame,
1771                                     .min_perms     = AV_PERM_READ, },
1772                                   { .name = NULL }},
1773     .outputs   = (AVFilterPad[]) {{ .name = NULL }},
1774 };
1775 #endif  /* CONFIG_AVFILTER */
1776
1777 static int video_thread(void *arg)
1778 {
1779     VideoState *is = arg;
1780     AVFrame *frame= avcodec_alloc_frame();
1781     int64_t pts_int;
1782     double pts;
1783     int ret;
1784
1785 #if CONFIG_AVFILTER
1786     int64_t pos;
1787     char sws_flags_str[128];
1788     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1789     AVFilterGraph *graph = av_mallocz(sizeof(AVFilterGraph));
1790     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1791     graph->scale_sws_opts = av_strdup(sws_flags_str);
1792
1793     if(!(filt_src = avfilter_open(&input_filter,  "src")))   goto the_end;
1794     if(!(filt_out = avfilter_open(&output_filter, "out")))   goto the_end;
1795
1796     if(avfilter_init_filter(filt_src, NULL, is))             goto the_end;
1797     if(avfilter_init_filter(filt_out, NULL, frame))          goto the_end;
1798
1799
1800     if(vfilters) {
1801         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
1802         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
1803
1804         outputs->name    = av_strdup("in");
1805         outputs->filter  = filt_src;
1806         outputs->pad_idx = 0;
1807         outputs->next    = NULL;
1808
1809         inputs->name    = av_strdup("out");
1810         inputs->filter  = filt_out;
1811         inputs->pad_idx = 0;
1812         inputs->next    = NULL;
1813
1814         if (avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL) < 0)
1815             goto the_end;
1816         av_freep(&vfilters);
1817     } else {
1818         if(avfilter_link(filt_src, 0, filt_out, 0) < 0)          goto the_end;
1819     }
1820     avfilter_graph_add_filter(graph, filt_src);
1821     avfilter_graph_add_filter(graph, filt_out);
1822
1823     if(avfilter_graph_check_validity(graph, NULL))           goto the_end;
1824     if(avfilter_graph_config_formats(graph, NULL))           goto the_end;
1825     if(avfilter_graph_config_links(graph, NULL))             goto the_end;
1826
1827     is->out_video_filter = filt_out;
1828 #endif
1829
1830     for(;;) {
1831 #if !CONFIG_AVFILTER
1832         AVPacket pkt;
1833 #endif
1834         while (is->paused && !is->videoq.abort_request)
1835             SDL_Delay(10);
1836 #if CONFIG_AVFILTER
1837         ret = get_filtered_video_frame(filt_out, frame, &pts_int, &pos);
1838 #else
1839         ret = get_video_frame(is, frame, &pts_int, &pkt);
1840 #endif
1841
1842         if (ret < 0) goto the_end;
1843
1844         if (!ret)
1845             continue;
1846
1847         pts = pts_int*av_q2d(is->video_st->time_base);
1848
1849 #if CONFIG_AVFILTER
1850         ret = output_picture2(is, frame, pts, pos);
1851 #else
1852         ret = output_picture2(is, frame, pts,  pkt.pos);
1853         av_free_packet(&pkt);
1854 #endif
1855         if (ret < 0)
1856             goto the_end;
1857
1858         if (step)
1859             if (cur_stream)
1860                 stream_pause(cur_stream);
1861     }
1862  the_end:
1863 #if CONFIG_AVFILTER
1864     avfilter_graph_destroy(graph);
1865     av_freep(&graph);
1866 #endif
1867     av_free(frame);
1868     return 0;
1869 }
1870
1871 static int subtitle_thread(void *arg)
1872 {
1873     VideoState *is = arg;
1874     SubPicture *sp;
1875     AVPacket pkt1, *pkt = &pkt1;
1876     int len1, got_subtitle;
1877     double pts;
1878     int i, j;
1879     int r, g, b, y, u, v, a;
1880
1881     for(;;) {
1882         while (is->paused && !is->subtitleq.abort_request) {
1883             SDL_Delay(10);
1884         }
1885         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1886             break;
1887
1888         if(pkt->data == flush_pkt.data){
1889             avcodec_flush_buffers(is->subtitle_st->codec);
1890             continue;
1891         }
1892         SDL_LockMutex(is->subpq_mutex);
1893         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1894                !is->subtitleq.abort_request) {
1895             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1896         }
1897         SDL_UnlockMutex(is->subpq_mutex);
1898
1899         if (is->subtitleq.abort_request)
1900             goto the_end;
1901
1902         sp = &is->subpq[is->subpq_windex];
1903
1904        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1905            this packet, if any */
1906         pts = 0;
1907         if (pkt->pts != AV_NOPTS_VALUE)
1908             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1909
1910         len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1911                                     &sp->sub, &got_subtitle,
1912                                     pkt);
1913 //            if (len1 < 0)
1914 //                break;
1915         if (got_subtitle && sp->sub.format == 0) {
1916             sp->pts = pts;
1917
1918             for (i = 0; i < sp->sub.num_rects; i++)
1919             {
1920                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1921                 {
1922                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1923                     y = RGB_TO_Y_CCIR(r, g, b);
1924                     u = RGB_TO_U_CCIR(r, g, b, 0);
1925                     v = RGB_TO_V_CCIR(r, g, b, 0);
1926                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1927                 }
1928             }
1929
1930             /* now we can update the picture count */
1931             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1932                 is->subpq_windex = 0;
1933             SDL_LockMutex(is->subpq_mutex);
1934             is->subpq_size++;
1935             SDL_UnlockMutex(is->subpq_mutex);
1936         }
1937         av_free_packet(pkt);
1938 //        if (step)
1939 //            if (cur_stream)
1940 //                stream_pause(cur_stream);
1941     }
1942  the_end:
1943     return 0;
1944 }
1945
1946 /* copy samples for viewing in editor window */
1947 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1948 {
1949     int size, len, channels;
1950
1951     channels = is->audio_st->codec->channels;
1952
1953     size = samples_size / sizeof(short);
1954     while (size > 0) {
1955         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1956         if (len > size)
1957             len = size;
1958         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1959         samples += len;
1960         is->sample_array_index += len;
1961         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1962             is->sample_array_index = 0;
1963         size -= len;
1964     }
1965 }
1966
1967 /* return the new audio buffer size (samples can be added or deleted
1968    to get better sync if video or external master clock) */
1969 static int synchronize_audio(VideoState *is, short *samples,
1970                              int samples_size1, double pts)
1971 {
1972     int n, samples_size;
1973     double ref_clock;
1974
1975     n = 2 * is->audio_st->codec->channels;
1976     samples_size = samples_size1;
1977
1978     /* if not master, then we try to remove or add samples to correct the clock */
1979     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1980          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1981         double diff, avg_diff;
1982         int wanted_size, min_size, max_size, nb_samples;
1983
1984         ref_clock = get_master_clock(is);
1985         diff = get_audio_clock(is) - ref_clock;
1986
1987         if (diff < AV_NOSYNC_THRESHOLD) {
1988             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1989             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1990                 /* not enough measures to have a correct estimate */
1991                 is->audio_diff_avg_count++;
1992             } else {
1993                 /* estimate the A-V difference */
1994                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1995
1996                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1997                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1998                     nb_samples = samples_size / n;
1999
2000                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2001                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2002                     if (wanted_size < min_size)
2003                         wanted_size = min_size;
2004                     else if (wanted_size > max_size)
2005                         wanted_size = max_size;
2006
2007                     /* add or remove samples to correction the synchro */
2008                     if (wanted_size < samples_size) {
2009                         /* remove samples */
2010                         samples_size = wanted_size;
2011                     } else if (wanted_size > samples_size) {
2012                         uint8_t *samples_end, *q;
2013                         int nb;
2014
2015                         /* add samples */
2016                         nb = (samples_size - wanted_size);
2017                         samples_end = (uint8_t *)samples + samples_size - n;
2018                         q = samples_end + n;
2019                         while (nb > 0) {
2020                             memcpy(q, samples_end, n);
2021                             q += n;
2022                             nb -= n;
2023                         }
2024                         samples_size = wanted_size;
2025                     }
2026                 }
2027 #if 0
2028                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
2029                        diff, avg_diff, samples_size - samples_size1,
2030                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
2031 #endif
2032             }
2033         } else {
2034             /* too big difference : may be initial PTS errors, so
2035                reset A-V filter */
2036             is->audio_diff_avg_count = 0;
2037             is->audio_diff_cum = 0;
2038         }
2039     }
2040
2041     return samples_size;
2042 }
2043
2044 /* decode one audio frame and returns its uncompressed size */
2045 static int audio_decode_frame(VideoState *is, double *pts_ptr)
2046 {
2047     AVPacket *pkt_temp = &is->audio_pkt_temp;
2048     AVPacket *pkt = &is->audio_pkt;
2049     AVCodecContext *dec= is->audio_st->codec;
2050     int n, len1, data_size;
2051     double pts;
2052
2053     for(;;) {
2054         /* NOTE: the audio packet can contain several frames */
2055         while (pkt_temp->size > 0) {
2056             data_size = sizeof(is->audio_buf1);
2057             len1 = avcodec_decode_audio3(dec,
2058                                         (int16_t *)is->audio_buf1, &data_size,
2059                                         pkt_temp);
2060             if (len1 < 0) {
2061                 /* if error, we skip the frame */
2062                 pkt_temp->size = 0;
2063                 break;
2064             }
2065
2066             pkt_temp->data += len1;
2067             pkt_temp->size -= len1;
2068             if (data_size <= 0)
2069                 continue;
2070
2071             if (dec->sample_fmt != is->audio_src_fmt) {
2072                 if (is->reformat_ctx)
2073                     av_audio_convert_free(is->reformat_ctx);
2074                 is->reformat_ctx= av_audio_convert_alloc(SAMPLE_FMT_S16, 1,
2075                                                          dec->sample_fmt, 1, NULL, 0);
2076                 if (!is->reformat_ctx) {
2077                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2078                         avcodec_get_sample_fmt_name(dec->sample_fmt),
2079                         avcodec_get_sample_fmt_name(SAMPLE_FMT_S16));
2080                         break;
2081                 }
2082                 is->audio_src_fmt= dec->sample_fmt;
2083             }
2084
2085             if (is->reformat_ctx) {
2086                 const void *ibuf[6]= {is->audio_buf1};
2087                 void *obuf[6]= {is->audio_buf2};
2088                 int istride[6]= {av_get_bits_per_sample_format(dec->sample_fmt)/8};
2089                 int ostride[6]= {2};
2090                 int len= data_size/istride[0];
2091                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2092                     printf("av_audio_convert() failed\n");
2093                     break;
2094                 }
2095                 is->audio_buf= is->audio_buf2;
2096                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2097                           remove this legacy cruft */
2098                 data_size= len*2;
2099             }else{
2100                 is->audio_buf= is->audio_buf1;
2101             }
2102
2103             /* if no pts, then compute it */
2104             pts = is->audio_clock;
2105             *pts_ptr = pts;
2106             n = 2 * dec->channels;
2107             is->audio_clock += (double)data_size /
2108                 (double)(n * dec->sample_rate);
2109 #if defined(DEBUG_SYNC)
2110             {
2111                 static double last_clock;
2112                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2113                        is->audio_clock - last_clock,
2114                        is->audio_clock, pts);
2115                 last_clock = is->audio_clock;
2116             }
2117 #endif
2118             return data_size;
2119         }
2120
2121         /* free the current packet */
2122         if (pkt->data)
2123             av_free_packet(pkt);
2124
2125         if (is->paused || is->audioq.abort_request) {
2126             return -1;
2127         }
2128
2129         /* read next packet */
2130         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2131             return -1;
2132         if(pkt->data == flush_pkt.data){
2133             avcodec_flush_buffers(dec);
2134             continue;
2135         }
2136
2137         pkt_temp->data = pkt->data;
2138         pkt_temp->size = pkt->size;
2139
2140         /* if update the audio clock with the pts */
2141         if (pkt->pts != AV_NOPTS_VALUE) {
2142             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2143         }
2144     }
2145 }
2146
2147 /* get the current audio output buffer size, in samples. With SDL, we
2148    cannot have a precise information */
2149 static int audio_write_get_buf_size(VideoState *is)
2150 {
2151     return is->audio_buf_size - is->audio_buf_index;
2152 }
2153
2154
2155 /* prepare a new audio buffer */
2156 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2157 {
2158     VideoState *is = opaque;
2159     int audio_size, len1;
2160     double pts;
2161
2162     audio_callback_time = av_gettime();
2163
2164     while (len > 0) {
2165         if (is->audio_buf_index >= is->audio_buf_size) {
2166            audio_size = audio_decode_frame(is, &pts);
2167            if (audio_size < 0) {
2168                 /* if error, just output silence */
2169                is->audio_buf = is->audio_buf1;
2170                is->audio_buf_size = 1024;
2171                memset(is->audio_buf, 0, is->audio_buf_size);
2172            } else {
2173                if (is->show_audio)
2174                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2175                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2176                                               pts);
2177                is->audio_buf_size = audio_size;
2178            }
2179            is->audio_buf_index = 0;
2180         }
2181         len1 = is->audio_buf_size - is->audio_buf_index;
2182         if (len1 > len)
2183             len1 = len;
2184         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2185         len -= len1;
2186         stream += len1;
2187         is->audio_buf_index += len1;
2188     }
2189 }
2190
2191 /* open a given stream. Return 0 if OK */
2192 static int stream_component_open(VideoState *is, int stream_index)
2193 {
2194     AVFormatContext *ic = is->ic;
2195     AVCodecContext *avctx;
2196     AVCodec *codec;
2197     SDL_AudioSpec wanted_spec, spec;
2198
2199     if (stream_index < 0 || stream_index >= ic->nb_streams)
2200         return -1;
2201     avctx = ic->streams[stream_index]->codec;
2202
2203     /* prepare audio output */
2204     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2205         if (avctx->channels > 0) {
2206             avctx->request_channels = FFMIN(2, avctx->channels);
2207         } else {
2208             avctx->request_channels = 2;
2209         }
2210     }
2211
2212     codec = avcodec_find_decoder(avctx->codec_id);
2213     avctx->debug_mv = debug_mv;
2214     avctx->debug = debug;
2215     avctx->workaround_bugs = workaround_bugs;
2216     avctx->lowres = lowres;
2217     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2218     avctx->idct_algo= idct;
2219     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2220     avctx->skip_frame= skip_frame;
2221     avctx->skip_idct= skip_idct;
2222     avctx->skip_loop_filter= skip_loop_filter;
2223     avctx->error_recognition= error_recognition;
2224     avctx->error_concealment= error_concealment;
2225     avcodec_thread_init(avctx, thread_count);
2226
2227     set_context_opts(avctx, avcodec_opts[avctx->codec_type], 0);
2228
2229     if (!codec ||
2230         avcodec_open(avctx, codec) < 0)
2231         return -1;
2232
2233     /* prepare audio output */
2234     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2235         wanted_spec.freq = avctx->sample_rate;
2236         wanted_spec.format = AUDIO_S16SYS;
2237         wanted_spec.channels = avctx->channels;
2238         wanted_spec.silence = 0;
2239         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2240         wanted_spec.callback = sdl_audio_callback;
2241         wanted_spec.userdata = is;
2242         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2243             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2244             return -1;
2245         }
2246         is->audio_hw_buf_size = spec.size;
2247         is->audio_src_fmt= SAMPLE_FMT_S16;
2248     }
2249
2250     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2251     switch(avctx->codec_type) {
2252     case AVMEDIA_TYPE_AUDIO:
2253         is->audio_stream = stream_index;
2254         is->audio_st = ic->streams[stream_index];
2255         is->audio_buf_size = 0;
2256         is->audio_buf_index = 0;
2257
2258         /* init averaging filter */
2259         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2260         is->audio_diff_avg_count = 0;
2261         /* since we do not have a precise anough audio fifo fullness,
2262            we correct audio sync only if larger than this threshold */
2263         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2264
2265         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2266         packet_queue_init(&is->audioq);
2267         SDL_PauseAudio(0);
2268         break;
2269     case AVMEDIA_TYPE_VIDEO:
2270         is->video_stream = stream_index;
2271         is->video_st = ic->streams[stream_index];
2272
2273 //        is->video_current_pts_time = av_gettime();
2274
2275         packet_queue_init(&is->videoq);
2276         is->video_tid = SDL_CreateThread(video_thread, is);
2277         break;
2278     case AVMEDIA_TYPE_SUBTITLE:
2279         is->subtitle_stream = stream_index;
2280         is->subtitle_st = ic->streams[stream_index];
2281         packet_queue_init(&is->subtitleq);
2282
2283         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2284         break;
2285     default:
2286         break;
2287     }
2288     return 0;
2289 }
2290
2291 static void stream_component_close(VideoState *is, int stream_index)
2292 {
2293     AVFormatContext *ic = is->ic;
2294     AVCodecContext *avctx;
2295
2296     if (stream_index < 0 || stream_index >= ic->nb_streams)
2297         return;
2298     avctx = ic->streams[stream_index]->codec;
2299
2300     switch(avctx->codec_type) {
2301     case AVMEDIA_TYPE_AUDIO:
2302         packet_queue_abort(&is->audioq);
2303
2304         SDL_CloseAudio();
2305
2306         packet_queue_end(&is->audioq);
2307         if (is->reformat_ctx)
2308             av_audio_convert_free(is->reformat_ctx);
2309         is->reformat_ctx = NULL;
2310         break;
2311     case AVMEDIA_TYPE_VIDEO:
2312         packet_queue_abort(&is->videoq);
2313
2314         /* note: we also signal this mutex to make sure we deblock the
2315            video thread in all cases */
2316         SDL_LockMutex(is->pictq_mutex);
2317         SDL_CondSignal(is->pictq_cond);
2318         SDL_UnlockMutex(is->pictq_mutex);
2319
2320         SDL_WaitThread(is->video_tid, NULL);
2321
2322         packet_queue_end(&is->videoq);
2323         break;
2324     case AVMEDIA_TYPE_SUBTITLE:
2325         packet_queue_abort(&is->subtitleq);
2326
2327         /* note: we also signal this mutex to make sure we deblock the
2328            video thread in all cases */
2329         SDL_LockMutex(is->subpq_mutex);
2330         is->subtitle_stream_changed = 1;
2331
2332         SDL_CondSignal(is->subpq_cond);
2333         SDL_UnlockMutex(is->subpq_mutex);
2334
2335         SDL_WaitThread(is->subtitle_tid, NULL);
2336
2337         packet_queue_end(&is->subtitleq);
2338         break;
2339     default:
2340         break;
2341     }
2342
2343     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2344     avcodec_close(avctx);
2345     switch(avctx->codec_type) {
2346     case AVMEDIA_TYPE_AUDIO:
2347         is->audio_st = NULL;
2348         is->audio_stream = -1;
2349         break;
2350     case AVMEDIA_TYPE_VIDEO:
2351         is->video_st = NULL;
2352         is->video_stream = -1;
2353         break;
2354     case AVMEDIA_TYPE_SUBTITLE:
2355         is->subtitle_st = NULL;
2356         is->subtitle_stream = -1;
2357         break;
2358     default:
2359         break;
2360     }
2361 }
2362
2363 /* since we have only one decoding thread, we can use a global
2364    variable instead of a thread local variable */
2365 static VideoState *global_video_state;
2366
2367 static int decode_interrupt_cb(void)
2368 {
2369     return (global_video_state && global_video_state->abort_request);
2370 }
2371
2372 /* this thread gets the stream from the disk or the network */
2373 static int decode_thread(void *arg)
2374 {
2375     VideoState *is = arg;
2376     AVFormatContext *ic;
2377     int err, i, ret;
2378     int st_index[AVMEDIA_TYPE_NB];
2379     int st_count[AVMEDIA_TYPE_NB]={0};
2380     int st_best_packet_count[AVMEDIA_TYPE_NB];
2381     AVPacket pkt1, *pkt = &pkt1;
2382     AVFormatParameters params, *ap = &params;
2383     int eof=0;
2384     int pkt_in_play_range = 0;
2385
2386     ic = avformat_alloc_context();
2387
2388     memset(st_index, -1, sizeof(st_index));
2389     memset(st_best_packet_count, -1, sizeof(st_best_packet_count));
2390     is->video_stream = -1;
2391     is->audio_stream = -1;
2392     is->subtitle_stream = -1;
2393
2394     global_video_state = is;
2395     url_set_interrupt_cb(decode_interrupt_cb);
2396
2397     memset(ap, 0, sizeof(*ap));
2398
2399     ap->prealloced_context = 1;
2400     ap->width = frame_width;
2401     ap->height= frame_height;
2402     ap->time_base= (AVRational){1, 25};
2403     ap->pix_fmt = frame_pix_fmt;
2404
2405     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);
2406
2407     err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
2408     if (err < 0) {
2409         print_error(is->filename, err);
2410         ret = -1;
2411         goto fail;
2412     }
2413     is->ic = ic;
2414
2415     if(genpts)
2416         ic->flags |= AVFMT_FLAG_GENPTS;
2417
2418     err = av_find_stream_info(ic);
2419     if (err < 0) {
2420         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2421         ret = -1;
2422         goto fail;
2423     }
2424     if(ic->pb)
2425         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2426
2427     if(seek_by_bytes<0)
2428         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2429
2430     /* if seeking requested, we execute it */
2431     if (start_time != AV_NOPTS_VALUE) {
2432         int64_t timestamp;
2433
2434         timestamp = start_time;
2435         /* add the stream start time */
2436         if (ic->start_time != AV_NOPTS_VALUE)
2437             timestamp += ic->start_time;
2438         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2439         if (ret < 0) {
2440             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2441                     is->filename, (double)timestamp / AV_TIME_BASE);
2442         }
2443     }
2444
2445     for(i = 0; i < ic->nb_streams; i++) {
2446         AVStream *st= ic->streams[i];
2447         AVCodecContext *avctx = st->codec;
2448         ic->streams[i]->discard = AVDISCARD_ALL;
2449         if(avctx->codec_type >= (unsigned)AVMEDIA_TYPE_NB)
2450             continue;
2451         if(st_count[avctx->codec_type]++ != wanted_stream[avctx->codec_type] && wanted_stream[avctx->codec_type] >= 0)
2452             continue;
2453
2454         if(st_best_packet_count[avctx->codec_type] >= st->codec_info_nb_frames)
2455             continue;
2456         st_best_packet_count[avctx->codec_type]= st->codec_info_nb_frames;
2457
2458         switch(avctx->codec_type) {
2459         case AVMEDIA_TYPE_AUDIO:
2460             if (!audio_disable)
2461                 st_index[AVMEDIA_TYPE_AUDIO] = i;
2462             break;
2463         case AVMEDIA_TYPE_VIDEO:
2464         case AVMEDIA_TYPE_SUBTITLE:
2465             if (!video_disable)
2466                 st_index[avctx->codec_type] = i;
2467             break;
2468         default:
2469             break;
2470         }
2471     }
2472     if (show_status) {
2473         dump_format(ic, 0, is->filename, 0);
2474     }
2475
2476     /* open the streams */
2477     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2478         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2479     }
2480
2481     ret=-1;
2482     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2483         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2484     }
2485     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2486     if(ret<0) {
2487         if (!display_disable)
2488             is->show_audio = 2;
2489     }
2490
2491     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2492         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2493     }
2494
2495     if (is->video_stream < 0 && is->audio_stream < 0) {
2496         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2497         ret = -1;
2498         goto fail;
2499     }
2500
2501     for(;;) {
2502         if (is->abort_request)
2503             break;
2504         if (is->paused != is->last_paused) {
2505             is->last_paused = is->paused;
2506             if (is->paused)
2507                 is->read_pause_return= av_read_pause(ic);
2508             else
2509                 av_read_play(ic);
2510         }
2511 #if CONFIG_RTSP_DEMUXER
2512         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2513             /* wait 10 ms to avoid trying to get another packet */
2514             /* XXX: horrible */
2515             SDL_Delay(10);
2516             continue;
2517         }
2518 #endif
2519         if (is->seek_req) {
2520             int64_t seek_target= is->seek_pos;
2521             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2522             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2523 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2524 //      of the seek_pos/seek_rel variables
2525
2526             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2527             if (ret < 0) {
2528                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2529             }else{
2530                 if (is->audio_stream >= 0) {
2531                     packet_queue_flush(&is->audioq);
2532                     packet_queue_put(&is->audioq, &flush_pkt);
2533                 }
2534                 if (is->subtitle_stream >= 0) {
2535                     packet_queue_flush(&is->subtitleq);
2536                     packet_queue_put(&is->subtitleq, &flush_pkt);
2537                 }
2538                 if (is->video_stream >= 0) {
2539                     packet_queue_flush(&is->videoq);
2540                     packet_queue_put(&is->videoq, &flush_pkt);
2541                 }
2542             }
2543             is->seek_req = 0;
2544             eof= 0;
2545         }
2546
2547         /* if the queue are full, no need to read more */
2548         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2549             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2550                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2551                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2552             /* wait 10 ms */
2553             SDL_Delay(10);
2554             continue;
2555         }
2556         if(url_feof(ic->pb) || eof) {
2557             if(is->video_stream >= 0){
2558                 av_init_packet(pkt);
2559                 pkt->data=NULL;
2560                 pkt->size=0;
2561                 pkt->stream_index= is->video_stream;
2562                 packet_queue_put(&is->videoq, pkt);
2563             }
2564             SDL_Delay(10);
2565             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2566                 if(loop!=1 && (!loop || --loop)){
2567                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2568                 }else if(autoexit){
2569                     ret=AVERROR_EOF;
2570                     goto fail;
2571                 }
2572             }
2573             continue;
2574         }
2575         ret = av_read_frame(ic, pkt);
2576         if (ret < 0) {
2577             if (ret == AVERROR_EOF)
2578                 eof=1;
2579             if (url_ferror(ic->pb))
2580                 break;
2581             SDL_Delay(100); /* wait for user event */
2582             continue;
2583         }
2584         /* check if packet is in play range specified by user, then queue, otherwise discard */
2585         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2586                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2587                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2588                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2589                 <= ((double)duration/1000000);
2590         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2591             packet_queue_put(&is->audioq, pkt);
2592         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2593             packet_queue_put(&is->videoq, pkt);
2594         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2595             packet_queue_put(&is->subtitleq, pkt);
2596         } else {
2597             av_free_packet(pkt);
2598         }
2599     }
2600     /* wait until the end */
2601     while (!is->abort_request) {
2602         SDL_Delay(100);
2603     }
2604
2605     ret = 0;
2606  fail:
2607     /* disable interrupting */
2608     global_video_state = NULL;
2609
2610     /* close each stream */
2611     if (is->audio_stream >= 0)
2612         stream_component_close(is, is->audio_stream);
2613     if (is->video_stream >= 0)
2614         stream_component_close(is, is->video_stream);
2615     if (is->subtitle_stream >= 0)
2616         stream_component_close(is, is->subtitle_stream);
2617     if (is->ic) {
2618         av_close_input_file(is->ic);
2619         is->ic = NULL; /* safety */
2620     }
2621     url_set_interrupt_cb(NULL);
2622
2623     if (ret != 0) {
2624         SDL_Event event;
2625
2626         event.type = FF_QUIT_EVENT;
2627         event.user.data1 = is;
2628         SDL_PushEvent(&event);
2629     }
2630     return 0;
2631 }
2632
2633 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2634 {
2635     VideoState *is;
2636
2637     is = av_mallocz(sizeof(VideoState));
2638     if (!is)
2639         return NULL;
2640     av_strlcpy(is->filename, filename, sizeof(is->filename));
2641     is->iformat = iformat;
2642     is->ytop = 0;
2643     is->xleft = 0;
2644
2645     /* start video display */
2646     is->pictq_mutex = SDL_CreateMutex();
2647     is->pictq_cond = SDL_CreateCond();
2648
2649     is->subpq_mutex = SDL_CreateMutex();
2650     is->subpq_cond = SDL_CreateCond();
2651
2652     is->av_sync_type = av_sync_type;
2653     is->parse_tid = SDL_CreateThread(decode_thread, is);
2654     if (!is->parse_tid) {
2655         av_free(is);
2656         return NULL;
2657     }
2658     return is;
2659 }
2660
2661 static void stream_close(VideoState *is)
2662 {
2663     VideoPicture *vp;
2664     int i;
2665     /* XXX: use a special url_shutdown call to abort parse cleanly */
2666     is->abort_request = 1;
2667     SDL_WaitThread(is->parse_tid, NULL);
2668     SDL_WaitThread(is->refresh_tid, NULL);
2669
2670     /* free all pictures */
2671     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2672         vp = &is->pictq[i];
2673 #if CONFIG_AVFILTER
2674         if (vp->picref) {
2675             avfilter_unref_buffer(vp->picref);
2676             vp->picref = NULL;
2677         }
2678 #endif
2679         if (vp->bmp) {
2680             SDL_FreeYUVOverlay(vp->bmp);
2681             vp->bmp = NULL;
2682         }
2683     }
2684     SDL_DestroyMutex(is->pictq_mutex);
2685     SDL_DestroyCond(is->pictq_cond);
2686     SDL_DestroyMutex(is->subpq_mutex);
2687     SDL_DestroyCond(is->subpq_cond);
2688 #if !CONFIG_AVFILTER
2689     if (is->img_convert_ctx)
2690         sws_freeContext(is->img_convert_ctx);
2691 #endif
2692     av_free(is);
2693 }
2694
2695 static void stream_cycle_channel(VideoState *is, int codec_type)
2696 {
2697     AVFormatContext *ic = is->ic;
2698     int start_index, stream_index;
2699     AVStream *st;
2700
2701     if (codec_type == AVMEDIA_TYPE_VIDEO)
2702         start_index = is->video_stream;
2703     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2704         start_index = is->audio_stream;
2705     else
2706         start_index = is->subtitle_stream;
2707     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2708         return;
2709     stream_index = start_index;
2710     for(;;) {
2711         if (++stream_index >= is->ic->nb_streams)
2712         {
2713             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2714             {
2715                 stream_index = -1;
2716                 goto the_end;
2717             } else
2718                 stream_index = 0;
2719         }
2720         if (stream_index == start_index)
2721             return;
2722         st = ic->streams[stream_index];
2723         if (st->codec->codec_type == codec_type) {
2724             /* check that parameters are OK */
2725             switch(codec_type) {
2726             case AVMEDIA_TYPE_AUDIO:
2727                 if (st->codec->sample_rate != 0 &&
2728                     st->codec->channels != 0)
2729                     goto the_end;
2730                 break;
2731             case AVMEDIA_TYPE_VIDEO:
2732             case AVMEDIA_TYPE_SUBTITLE:
2733                 goto the_end;
2734             default:
2735                 break;
2736             }
2737         }
2738     }
2739  the_end:
2740     stream_component_close(is, start_index);
2741     stream_component_open(is, stream_index);
2742 }
2743
2744
2745 static void toggle_full_screen(void)
2746 {
2747     is_full_screen = !is_full_screen;
2748     if (!fs_screen_width) {
2749         /* use default SDL method */
2750 //        SDL_WM_ToggleFullScreen(screen);
2751     }
2752     video_open(cur_stream);
2753 }
2754
2755 static void toggle_pause(void)
2756 {
2757     if (cur_stream)
2758         stream_pause(cur_stream);
2759     step = 0;
2760 }
2761
2762 static void step_to_next_frame(void)
2763 {
2764     if (cur_stream) {
2765         /* if the stream is paused unpause it, then step */
2766         if (cur_stream->paused)
2767             stream_pause(cur_stream);
2768     }
2769     step = 1;
2770 }
2771
2772 static void do_exit(void)
2773 {
2774     int i;
2775     if (cur_stream) {
2776         stream_close(cur_stream);
2777         cur_stream = NULL;
2778     }
2779     for (i = 0; i < AVMEDIA_TYPE_NB; i++)
2780         av_free(avcodec_opts[i]);
2781     av_free(avformat_opts);
2782     av_free(sws_opts);
2783 #if CONFIG_AVFILTER
2784     avfilter_uninit();
2785 #endif
2786     if (show_status)
2787         printf("\n");
2788     SDL_Quit();
2789     exit(0);
2790 }
2791
2792 static void toggle_audio_display(void)
2793 {
2794     if (cur_stream) {
2795         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2796         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2797         fill_rectangle(screen,
2798                     cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2799                     bgcolor);
2800         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2801     }
2802 }
2803
2804 /* handle an event sent by the GUI */
2805 static void event_loop(void)
2806 {
2807     SDL_Event event;
2808     double incr, pos, frac;
2809
2810     for(;;) {
2811         double x;
2812         SDL_WaitEvent(&event);
2813         switch(event.type) {
2814         case SDL_KEYDOWN:
2815             if (exit_on_keydown) {
2816                 do_exit();
2817                 break;
2818             }
2819             switch(event.key.keysym.sym) {
2820             case SDLK_ESCAPE:
2821             case SDLK_q:
2822                 do_exit();
2823                 break;
2824             case SDLK_f:
2825                 toggle_full_screen();
2826                 break;
2827             case SDLK_p:
2828             case SDLK_SPACE:
2829                 toggle_pause();
2830                 break;
2831             case SDLK_s: //S: Step to next frame
2832                 step_to_next_frame();
2833                 break;
2834             case SDLK_a:
2835                 if (cur_stream)
2836                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2837                 break;
2838             case SDLK_v:
2839                 if (cur_stream)
2840                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2841                 break;
2842             case SDLK_t:
2843                 if (cur_stream)
2844                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2845                 break;
2846             case SDLK_w:
2847                 toggle_audio_display();
2848                 break;
2849             case SDLK_LEFT:
2850                 incr = -10.0;
2851                 goto do_seek;
2852             case SDLK_RIGHT:
2853                 incr = 10.0;
2854                 goto do_seek;
2855             case SDLK_UP:
2856                 incr = 60.0;
2857                 goto do_seek;
2858             case SDLK_DOWN:
2859                 incr = -60.0;
2860             do_seek:
2861                 if (cur_stream) {
2862                     if (seek_by_bytes) {
2863                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2864                             pos= cur_stream->video_current_pos;
2865                         }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2866                             pos= cur_stream->audio_pkt.pos;
2867                         }else
2868                             pos = url_ftell(cur_stream->ic->pb);
2869                         if (cur_stream->ic->bit_rate)
2870                             incr *= cur_stream->ic->bit_rate / 8.0;
2871                         else
2872                             incr *= 180000.0;
2873                         pos += incr;
2874                         stream_seek(cur_stream, pos, incr, 1);
2875                     } else {
2876                         pos = get_master_clock(cur_stream);
2877                         pos += incr;
2878                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2879                     }
2880                 }
2881                 break;
2882             default:
2883                 break;
2884             }
2885             break;
2886         case SDL_MOUSEBUTTONDOWN:
2887             if (exit_on_mousedown) {
2888                 do_exit();
2889                 break;
2890             }
2891         case SDL_MOUSEMOTION:
2892             if(event.type ==SDL_MOUSEBUTTONDOWN){
2893                 x= event.button.x;
2894             }else{
2895                 if(event.motion.state != SDL_PRESSED)
2896                     break;
2897                 x= event.motion.x;
2898             }
2899             if (cur_stream) {
2900                 if(seek_by_bytes || cur_stream->ic->duration<=0){
2901                     uint64_t size=  url_fsize(cur_stream->ic->pb);
2902                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2903                 }else{
2904                     int64_t ts;
2905                     int ns, hh, mm, ss;
2906                     int tns, thh, tmm, tss;
2907                     tns = cur_stream->ic->duration/1000000LL;
2908                     thh = tns/3600;
2909                     tmm = (tns%3600)/60;
2910                     tss = (tns%60);
2911                     frac = x/cur_stream->width;
2912                     ns = frac*tns;
2913                     hh = ns/3600;
2914                     mm = (ns%3600)/60;
2915                     ss = (ns%60);
2916                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2917                             hh, mm, ss, thh, tmm, tss);
2918                     ts = frac*cur_stream->ic->duration;
2919                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2920                         ts += cur_stream->ic->start_time;
2921                     stream_seek(cur_stream, ts, 0, 0);
2922                 }
2923             }
2924             break;
2925         case SDL_VIDEORESIZE:
2926             if (cur_stream) {
2927                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2928                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2929                 screen_width = cur_stream->width = event.resize.w;
2930                 screen_height= cur_stream->height= event.resize.h;
2931             }
2932             break;
2933         case SDL_QUIT:
2934         case FF_QUIT_EVENT:
2935             do_exit();
2936             break;
2937         case FF_ALLOC_EVENT:
2938             video_open(event.user.data1);
2939             alloc_picture(event.user.data1);
2940             break;
2941         case FF_REFRESH_EVENT:
2942             video_refresh_timer(event.user.data1);
2943             cur_stream->refresh=0;
2944             break;
2945         default:
2946             break;
2947         }
2948     }
2949 }
2950
2951 static void opt_frame_size(const char *arg)
2952 {
2953     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2954         fprintf(stderr, "Incorrect frame size\n");
2955         exit(1);
2956     }
2957     if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2958         fprintf(stderr, "Frame size must be a multiple of 2\n");
2959         exit(1);
2960     }
2961 }
2962
2963 static int opt_width(const char *opt, const char *arg)
2964 {
2965     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2966     return 0;
2967 }
2968
2969 static int opt_height(const char *opt, const char *arg)
2970 {
2971     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2972     return 0;
2973 }
2974
2975 static void opt_format(const char *arg)
2976 {
2977     file_iformat = av_find_input_format(arg);
2978     if (!file_iformat) {
2979         fprintf(stderr, "Unknown input format: %s\n", arg);
2980         exit(1);
2981     }
2982 }
2983
2984 static void opt_frame_pix_fmt(const char *arg)
2985 {
2986     frame_pix_fmt = av_get_pix_fmt(arg);
2987 }
2988
2989 static int opt_sync(const char *opt, const char *arg)
2990 {
2991     if (!strcmp(arg, "audio"))
2992         av_sync_type = AV_SYNC_AUDIO_MASTER;
2993     else if (!strcmp(arg, "video"))
2994         av_sync_type = AV_SYNC_VIDEO_MASTER;
2995     else if (!strcmp(arg, "ext"))
2996         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2997     else {
2998         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2999         exit(1);
3000     }
3001     return 0;
3002 }
3003
3004 static int opt_seek(const char *opt, const char *arg)
3005 {
3006     start_time = parse_time_or_die(opt, arg, 1);
3007     return 0;
3008 }
3009
3010 static int opt_duration(const char *opt, const char *arg)
3011 {
3012     duration = parse_time_or_die(opt, arg, 1);
3013     return 0;
3014 }
3015
3016 static int opt_debug(const char *opt, const char *arg)
3017 {
3018     av_log_set_level(99);
3019     debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
3020     return 0;
3021 }
3022
3023 static int opt_vismv(const char *opt, const char *arg)
3024 {
3025     debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
3026     return 0;
3027 }
3028
3029 static int opt_thread_count(const char *opt, const char *arg)
3030 {
3031     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
3032 #if !HAVE_THREADS
3033     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
3034 #endif
3035     return 0;
3036 }
3037
3038 static const OptionDef options[] = {
3039 #include "cmdutils_common_opts.h"
3040     { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
3041     { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
3042     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
3043     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
3044     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
3045     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
3046     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
3047     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
3048     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
3049     { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
3050     { "t", HAS_ARG | OPT_FUNC2, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
3051     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
3052     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
3053     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
3054     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
3055     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
3056     { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
3057     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
3058     { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
3059     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
3060     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
3061     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3062     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
3063     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
3064     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
3065     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
3066     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
3067     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
3068     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
3069     { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
3070     { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
3071     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
3072     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_keydown}, "exit on key down", "" },
3073     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_mousedown}, "exit on mouse down", "" },
3074     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
3075     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
3076     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
3077 #if CONFIG_AVFILTER
3078     { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
3079 #endif
3080     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
3081     { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
3082     { NULL, },
3083 };
3084
3085 static void show_usage(void)
3086 {
3087     printf("Simple media player\n");
3088     printf("usage: ffplay [options] input_file\n");
3089     printf("\n");
3090 }
3091
3092 static void show_help(void)
3093 {
3094     show_usage();
3095     show_help_options(options, "Main options:\n",
3096                       OPT_EXPERT, 0);
3097     show_help_options(options, "\nAdvanced options:\n",
3098                       OPT_EXPERT, OPT_EXPERT);
3099     printf("\nWhile playing:\n"
3100            "q, ESC              quit\n"
3101            "f                   toggle full screen\n"
3102            "p, SPC              pause\n"
3103            "a                   cycle audio channel\n"
3104            "v                   cycle video channel\n"
3105            "t                   cycle subtitle channel\n"
3106            "w                   show audio waves\n"
3107            "s                   activate frame-step mode\n"
3108            "left/right          seek backward/forward 10 seconds\n"
3109            "down/up             seek backward/forward 1 minute\n"
3110            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3111            );
3112 }
3113
3114 static void opt_input_file(const char *filename)
3115 {
3116     if (input_filename) {
3117         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3118                 filename, input_filename);
3119         exit(1);
3120     }
3121     if (!strcmp(filename, "-"))
3122         filename = "pipe:";
3123     input_filename = filename;
3124 }
3125
3126 /* Called from the main */
3127 int main(int argc, char **argv)
3128 {
3129     int flags, i;
3130
3131     /* register all codecs, demux and protocols */
3132     avcodec_register_all();
3133 #if CONFIG_AVDEVICE
3134     avdevice_register_all();
3135 #endif
3136 #if CONFIG_AVFILTER
3137     avfilter_register_all();
3138 #endif
3139     av_register_all();
3140
3141     for(i=0; i<AVMEDIA_TYPE_NB; i++){
3142         avcodec_opts[i]= avcodec_alloc_context2(i);
3143     }
3144     avformat_opts = avformat_alloc_context();
3145 #if !CONFIG_AVFILTER
3146     sws_opts = sws_getContext(16,16,0, 16,16,0, sws_flags, NULL,NULL,NULL);
3147 #endif
3148
3149     show_banner();
3150
3151     parse_options(argc, argv, options, opt_input_file);
3152
3153     if (!input_filename) {
3154         show_usage();
3155         fprintf(stderr, "An input file must be specified\n");
3156         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffplay'\n");
3157         exit(1);
3158     }
3159
3160     if (display_disable) {
3161         video_disable = 1;
3162     }
3163     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3164 #if !defined(__MINGW32__) && !defined(__APPLE__)
3165     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3166 #endif
3167     if (SDL_Init (flags)) {
3168         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3169         exit(1);
3170     }
3171
3172     if (!display_disable) {
3173 #if HAVE_SDL_VIDEO_SIZE
3174         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3175         fs_screen_width = vi->current_w;
3176         fs_screen_height = vi->current_h;
3177 #endif
3178     }
3179
3180     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3181     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3182     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3183
3184     av_init_packet(&flush_pkt);
3185     flush_pkt.data= "FLUSH";
3186
3187     cur_stream = stream_open(input_filename, file_iformat);
3188
3189     event_loop();
3190
3191     /* never returns */
3192
3193     return 0;
3194 }