ac3: Remove ff_ac3_critical_band_size_tab.
[ffmpeg.git] / ffplay.c
1 /*
2  * FFplay : Simple Media Player based on the FFmpeg libraries
3  * Copyright (c) 2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #define _XOPEN_SOURCE 600
23
24 #include "config.h"
25 #include <inttypes.h>
26 #include <math.h>
27 #include <limits.h>
28 #include "libavutil/avstring.h"
29 #include "libavutil/colorspace.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavcore/imgutils.h"
32 #include "libavcore/parseutils.h"
33 #include "libavcore/samplefmt.h"
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/audioconvert.h"
38 #include "libavcodec/opt.h"
39 #include "libavcodec/avfft.h"
40
41 #if CONFIG_AVFILTER
42 # include "libavfilter/avfilter.h"
43 # include "libavfilter/avfiltergraph.h"
44 #endif
45
46 #include "cmdutils.h"
47
48 #include <SDL.h>
49 #include <SDL_thread.h>
50
51 #ifdef __MINGW32__
52 #undef main /* We don't want SDL to override our main() */
53 #endif
54
55 #include <unistd.h>
56 #include <assert.h>
57
58 const char program_name[] = "FFplay";
59 const int program_birth_year = 2003;
60
61 //#define DEBUG_SYNC
62
63 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
64 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
65 #define MIN_FRAMES 5
66
67 /* SDL audio buffer size, in samples. Should be small to have precise
68    A/V sync as SDL does not have hardware buffer fullness info. */
69 #define SDL_AUDIO_BUFFER_SIZE 1024
70
71 /* no AV sync correction is done if below the AV sync threshold */
72 #define AV_SYNC_THRESHOLD 0.01
73 /* no AV correction is done if too big error */
74 #define AV_NOSYNC_THRESHOLD 10.0
75
76 #define FRAME_SKIP_FACTOR 0.05
77
78 /* maximum audio speed change to get correct sync */
79 #define SAMPLE_CORRECTION_PERCENT_MAX 10
80
81 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
82 #define AUDIO_DIFF_AVG_NB   20
83
84 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
85 #define SAMPLE_ARRAY_SIZE (2*65536)
86
87 static int sws_flags = SWS_BICUBIC;
88
89 typedef struct PacketQueue {
90     AVPacketList *first_pkt, *last_pkt;
91     int nb_packets;
92     int size;
93     int abort_request;
94     SDL_mutex *mutex;
95     SDL_cond *cond;
96 } PacketQueue;
97
98 #define VIDEO_PICTURE_QUEUE_SIZE 2
99 #define SUBPICTURE_QUEUE_SIZE 4
100
101 typedef struct VideoPicture {
102     double pts;                                  ///<presentation time stamp for this picture
103     double target_clock;                         ///<av_gettime() time at which this should be displayed ideally
104     int64_t pos;                                 ///<byte position in file
105     SDL_Overlay *bmp;
106     int width, height; /* source height & width */
107     int allocated;
108     enum PixelFormat pix_fmt;
109
110 #if CONFIG_AVFILTER
111     AVFilterBufferRef *picref;
112 #endif
113 } VideoPicture;
114
115 typedef struct SubPicture {
116     double pts; /* presentation time stamp for this picture */
117     AVSubtitle sub;
118 } SubPicture;
119
120 enum {
121     AV_SYNC_AUDIO_MASTER, /* default choice */
122     AV_SYNC_VIDEO_MASTER,
123     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
124 };
125
126 typedef struct VideoState {
127     SDL_Thread *parse_tid;
128     SDL_Thread *video_tid;
129     SDL_Thread *refresh_tid;
130     AVInputFormat *iformat;
131     int no_background;
132     int abort_request;
133     int paused;
134     int last_paused;
135     int seek_req;
136     int seek_flags;
137     int64_t seek_pos;
138     int64_t seek_rel;
139     int read_pause_return;
140     AVFormatContext *ic;
141     int dtg_active_format;
142
143     int audio_stream;
144
145     int av_sync_type;
146     double external_clock; /* external clock base */
147     int64_t external_clock_time;
148
149     double audio_clock;
150     double audio_diff_cum; /* used for AV difference average computation */
151     double audio_diff_avg_coef;
152     double audio_diff_threshold;
153     int audio_diff_avg_count;
154     AVStream *audio_st;
155     PacketQueue audioq;
156     int audio_hw_buf_size;
157     /* samples output by the codec. we reserve more space for avsync
158        compensation */
159     DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
160     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
161     uint8_t *audio_buf;
162     unsigned int audio_buf_size; /* in bytes */
163     int audio_buf_index; /* in bytes */
164     AVPacket audio_pkt_temp;
165     AVPacket audio_pkt;
166     enum AVSampleFormat audio_src_fmt;
167     AVAudioConvert *reformat_ctx;
168
169     int show_audio; /* if true, display audio samples */
170     int16_t sample_array[SAMPLE_ARRAY_SIZE];
171     int sample_array_index;
172     int last_i_start;
173     RDFTContext *rdft;
174     int rdft_bits;
175     FFTSample *rdft_data;
176     int xpos;
177
178     SDL_Thread *subtitle_tid;
179     int subtitle_stream;
180     int subtitle_stream_changed;
181     AVStream *subtitle_st;
182     PacketQueue subtitleq;
183     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
184     int subpq_size, subpq_rindex, subpq_windex;
185     SDL_mutex *subpq_mutex;
186     SDL_cond *subpq_cond;
187
188     double frame_timer;
189     double frame_last_pts;
190     double frame_last_delay;
191     double video_clock;                          ///<pts of last decoded frame / predicted pts of next decoded frame
192     int video_stream;
193     AVStream *video_st;
194     PacketQueue videoq;
195     double video_current_pts;                    ///<current displayed pts (different from video_clock if frame fifos are used)
196     double video_current_pts_drift;              ///<video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
197     int64_t video_current_pos;                   ///<current displayed file pos
198     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
199     int pictq_size, pictq_rindex, pictq_windex;
200     SDL_mutex *pictq_mutex;
201     SDL_cond *pictq_cond;
202 #if !CONFIG_AVFILTER
203     struct SwsContext *img_convert_ctx;
204 #endif
205
206     //    QETimer *video_timer;
207     char filename[1024];
208     int width, height, xleft, ytop;
209
210     PtsCorrectionContext pts_ctx;
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             if (!display_disable)
1246                 video_display(is);
1247
1248             /* update queue size and signal for next picture */
1249             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1250                 is->pictq_rindex = 0;
1251
1252             SDL_LockMutex(is->pictq_mutex);
1253             is->pictq_size--;
1254             SDL_CondSignal(is->pictq_cond);
1255             SDL_UnlockMutex(is->pictq_mutex);
1256         }
1257     } else if (is->audio_st) {
1258         /* draw the next audio frame */
1259
1260         /* if only audio stream, then display the audio bars (better
1261            than nothing, just to test the implementation */
1262
1263         /* display picture */
1264         if (!display_disable)
1265             video_display(is);
1266     }
1267     if (show_status) {
1268         static int64_t last_time;
1269         int64_t cur_time;
1270         int aqsize, vqsize, sqsize;
1271         double av_diff;
1272
1273         cur_time = av_gettime();
1274         if (!last_time || (cur_time - last_time) >= 30000) {
1275             aqsize = 0;
1276             vqsize = 0;
1277             sqsize = 0;
1278             if (is->audio_st)
1279                 aqsize = is->audioq.size;
1280             if (is->video_st)
1281                 vqsize = is->videoq.size;
1282             if (is->subtitle_st)
1283                 sqsize = is->subtitleq.size;
1284             av_diff = 0;
1285             if (is->audio_st && is->video_st)
1286                 av_diff = get_audio_clock(is) - get_video_clock(is);
1287             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1288                    get_master_clock(is), av_diff, FFMAX(is->skip_frames-1, 0), aqsize / 1024, vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1289             fflush(stdout);
1290             last_time = cur_time;
1291         }
1292     }
1293 }
1294
1295 static void stream_close(VideoState *is)
1296 {
1297     VideoPicture *vp;
1298     int i;
1299     /* XXX: use a special url_shutdown call to abort parse cleanly */
1300     is->abort_request = 1;
1301     SDL_WaitThread(is->parse_tid, NULL);
1302     SDL_WaitThread(is->refresh_tid, NULL);
1303
1304     /* free all pictures */
1305     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1306         vp = &is->pictq[i];
1307 #if CONFIG_AVFILTER
1308         if (vp->picref) {
1309             avfilter_unref_buffer(vp->picref);
1310             vp->picref = NULL;
1311         }
1312 #endif
1313         if (vp->bmp) {
1314             SDL_FreeYUVOverlay(vp->bmp);
1315             vp->bmp = NULL;
1316         }
1317     }
1318     SDL_DestroyMutex(is->pictq_mutex);
1319     SDL_DestroyCond(is->pictq_cond);
1320     SDL_DestroyMutex(is->subpq_mutex);
1321     SDL_DestroyCond(is->subpq_cond);
1322 #if !CONFIG_AVFILTER
1323     if (is->img_convert_ctx)
1324         sws_freeContext(is->img_convert_ctx);
1325 #endif
1326     av_free(is);
1327 }
1328
1329 static void do_exit(void)
1330 {
1331     if (cur_stream) {
1332         stream_close(cur_stream);
1333         cur_stream = NULL;
1334     }
1335     uninit_opts();
1336 #if CONFIG_AVFILTER
1337     avfilter_uninit();
1338 #endif
1339     if (show_status)
1340         printf("\n");
1341     SDL_Quit();
1342     av_log(NULL, AV_LOG_QUIET, "");
1343     exit(0);
1344 }
1345
1346 /* allocate a picture (needs to do that in main thread to avoid
1347    potential locking problems */
1348 static void alloc_picture(void *opaque)
1349 {
1350     VideoState *is = opaque;
1351     VideoPicture *vp;
1352
1353     vp = &is->pictq[is->pictq_windex];
1354
1355     if (vp->bmp)
1356         SDL_FreeYUVOverlay(vp->bmp);
1357
1358 #if CONFIG_AVFILTER
1359     if (vp->picref)
1360         avfilter_unref_buffer(vp->picref);
1361     vp->picref = NULL;
1362
1363     vp->width   = is->out_video_filter->inputs[0]->w;
1364     vp->height  = is->out_video_filter->inputs[0]->h;
1365     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1366 #else
1367     vp->width   = is->video_st->codec->width;
1368     vp->height  = is->video_st->codec->height;
1369     vp->pix_fmt = is->video_st->codec->pix_fmt;
1370 #endif
1371
1372     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1373                                    SDL_YV12_OVERLAY,
1374                                    screen);
1375     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1376         /* SDL allocates a buffer smaller than requested if the video
1377          * overlay hardware is unable to support the requested size. */
1378         fprintf(stderr, "Error: the video system does not support an image\n"
1379                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1380                         "to reduce the image size.\n", vp->width, vp->height );
1381         do_exit();
1382     }
1383
1384     SDL_LockMutex(is->pictq_mutex);
1385     vp->allocated = 1;
1386     SDL_CondSignal(is->pictq_cond);
1387     SDL_UnlockMutex(is->pictq_mutex);
1388 }
1389
1390 /**
1391  *
1392  * @param pts the dts of the pkt / pts of the frame and guessed if not known
1393  */
1394 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1395 {
1396     VideoPicture *vp;
1397     int dst_pix_fmt;
1398 #if CONFIG_AVFILTER
1399     AVPicture pict_src;
1400 #endif
1401     /* wait until we have space to put a new picture */
1402     SDL_LockMutex(is->pictq_mutex);
1403
1404     if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1405         is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
1406
1407     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1408            !is->videoq.abort_request) {
1409         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1410     }
1411     SDL_UnlockMutex(is->pictq_mutex);
1412
1413     if (is->videoq.abort_request)
1414         return -1;
1415
1416     vp = &is->pictq[is->pictq_windex];
1417
1418     /* alloc or resize hardware picture buffer */
1419     if (!vp->bmp ||
1420 #if CONFIG_AVFILTER
1421         vp->width  != is->out_video_filter->inputs[0]->w ||
1422         vp->height != is->out_video_filter->inputs[0]->h) {
1423 #else
1424         vp->width != is->video_st->codec->width ||
1425         vp->height != is->video_st->codec->height) {
1426 #endif
1427         SDL_Event event;
1428
1429         vp->allocated = 0;
1430
1431         /* the allocation must be done in the main thread to avoid
1432            locking problems */
1433         event.type = FF_ALLOC_EVENT;
1434         event.user.data1 = is;
1435         SDL_PushEvent(&event);
1436
1437         /* wait until the picture is allocated */
1438         SDL_LockMutex(is->pictq_mutex);
1439         while (!vp->allocated && !is->videoq.abort_request) {
1440             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1441         }
1442         SDL_UnlockMutex(is->pictq_mutex);
1443
1444         if (is->videoq.abort_request)
1445             return -1;
1446     }
1447
1448     /* if the frame is not skipped, then display it */
1449     if (vp->bmp) {
1450         AVPicture pict;
1451 #if CONFIG_AVFILTER
1452         if(vp->picref)
1453             avfilter_unref_buffer(vp->picref);
1454         vp->picref = src_frame->opaque;
1455 #endif
1456
1457         /* get a pointer on the bitmap */
1458         SDL_LockYUVOverlay (vp->bmp);
1459
1460         dst_pix_fmt = PIX_FMT_YUV420P;
1461         memset(&pict,0,sizeof(AVPicture));
1462         pict.data[0] = vp->bmp->pixels[0];
1463         pict.data[1] = vp->bmp->pixels[2];
1464         pict.data[2] = vp->bmp->pixels[1];
1465
1466         pict.linesize[0] = vp->bmp->pitches[0];
1467         pict.linesize[1] = vp->bmp->pitches[2];
1468         pict.linesize[2] = vp->bmp->pitches[1];
1469
1470 #if CONFIG_AVFILTER
1471         pict_src.data[0] = src_frame->data[0];
1472         pict_src.data[1] = src_frame->data[1];
1473         pict_src.data[2] = src_frame->data[2];
1474
1475         pict_src.linesize[0] = src_frame->linesize[0];
1476         pict_src.linesize[1] = src_frame->linesize[1];
1477         pict_src.linesize[2] = src_frame->linesize[2];
1478
1479         //FIXME use direct rendering
1480         av_picture_copy(&pict, &pict_src,
1481                         vp->pix_fmt, vp->width, vp->height);
1482 #else
1483         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1484         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1485             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1486             dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1487         if (is->img_convert_ctx == NULL) {
1488             fprintf(stderr, "Cannot initialize the conversion context\n");
1489             exit(1);
1490         }
1491         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1492                   0, vp->height, pict.data, pict.linesize);
1493 #endif
1494         /* update the bitmap content */
1495         SDL_UnlockYUVOverlay(vp->bmp);
1496
1497         vp->pts = pts;
1498         vp->pos = pos;
1499
1500         /* now we can update the picture count */
1501         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1502             is->pictq_windex = 0;
1503         SDL_LockMutex(is->pictq_mutex);
1504         vp->target_clock= compute_target_time(vp->pts, is);
1505
1506         is->pictq_size++;
1507         SDL_UnlockMutex(is->pictq_mutex);
1508     }
1509     return 0;
1510 }
1511
1512 /**
1513  * compute the exact PTS for the picture if it is omitted in the stream
1514  * @param pts1 the dts of the pkt / pts of the frame
1515  */
1516 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1517 {
1518     double frame_delay, pts;
1519
1520     pts = pts1;
1521
1522     if (pts != 0) {
1523         /* update video clock with pts, if present */
1524         is->video_clock = pts;
1525     } else {
1526         pts = is->video_clock;
1527     }
1528     /* update video clock for next frame */
1529     frame_delay = av_q2d(is->video_st->codec->time_base);
1530     /* for MPEG2, the frame can be repeated, so we update the
1531        clock accordingly */
1532     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1533     is->video_clock += frame_delay;
1534
1535 #if defined(DEBUG_SYNC) && 0
1536     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1537            av_get_pict_type_char(src_frame->pict_type), pts, pts1);
1538 #endif
1539     return queue_picture(is, src_frame, pts, pos);
1540 }
1541
1542 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1543 {
1544     int len1, got_picture, i;
1545
1546     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1547         return -1;
1548
1549     if (pkt->data == flush_pkt.data) {
1550         avcodec_flush_buffers(is->video_st->codec);
1551
1552         SDL_LockMutex(is->pictq_mutex);
1553         //Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1554         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1555             is->pictq[i].target_clock= 0;
1556         }
1557         while (is->pictq_size && !is->videoq.abort_request) {
1558             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1559         }
1560         is->video_current_pos = -1;
1561         SDL_UnlockMutex(is->pictq_mutex);
1562
1563         init_pts_correction(&is->pts_ctx);
1564         is->frame_last_pts = AV_NOPTS_VALUE;
1565         is->frame_last_delay = 0;
1566         is->frame_timer = (double)av_gettime() / 1000000.0;
1567         is->skip_frames = 1;
1568         is->skip_frames_index = 0;
1569         return 0;
1570     }
1571
1572     is->video_st->codec->reordered_opaque = pkt->pts;
1573     len1 = avcodec_decode_video2(is->video_st->codec,
1574                                  frame, &got_picture,
1575                                  pkt);
1576
1577     if (got_picture) {
1578         if (decoder_reorder_pts == -1) {
1579             *pts = guess_correct_pts(&is->pts_ctx, frame->reordered_opaque, pkt->dts);
1580         } else if (decoder_reorder_pts) {
1581             *pts = frame->reordered_opaque;
1582         } else {
1583             *pts = pkt->dts;
1584         }
1585
1586         if (*pts == AV_NOPTS_VALUE) {
1587             *pts = 0;
1588         }
1589
1590         is->skip_frames_index += 1;
1591         if(is->skip_frames_index >= is->skip_frames){
1592             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1593             return 1;
1594         }
1595
1596     }
1597     return 0;
1598 }
1599
1600 #if CONFIG_AVFILTER
1601 typedef struct {
1602     VideoState *is;
1603     AVFrame *frame;
1604     int use_dr1;
1605 } FilterPriv;
1606
1607 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1608 {
1609     AVFilterContext *ctx = codec->opaque;
1610     AVFilterBufferRef  *ref;
1611     int perms = AV_PERM_WRITE;
1612     int i, w, h, stride[4];
1613     unsigned edge;
1614
1615     if (codec->codec->capabilities & CODEC_CAP_NEG_LINESIZES)
1616         perms |= AV_PERM_NEG_LINESIZES;
1617
1618     if(pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1619         if(pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1620         if(pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1621         if(pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1622     }
1623     if(pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1624
1625     w = codec->width;
1626     h = codec->height;
1627     avcodec_align_dimensions2(codec, &w, &h, stride);
1628     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1629     w += edge << 1;
1630     h += edge << 1;
1631
1632     if(!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1633         return -1;
1634
1635     ref->video->w = codec->width;
1636     ref->video->h = codec->height;
1637     for(i = 0; i < 4; i ++) {
1638         unsigned hshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_w : 0;
1639         unsigned vshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_h : 0;
1640
1641         if (ref->data[i]) {
1642             ref->data[i]    += (edge >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1643         }
1644         pic->data[i]     = ref->data[i];
1645         pic->linesize[i] = ref->linesize[i];
1646     }
1647     pic->opaque = ref;
1648     pic->age    = INT_MAX;
1649     pic->type   = FF_BUFFER_TYPE_USER;
1650     pic->reordered_opaque = codec->reordered_opaque;
1651     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1652     else           pic->pkt_pts = AV_NOPTS_VALUE;
1653     return 0;
1654 }
1655
1656 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1657 {
1658     memset(pic->data, 0, sizeof(pic->data));
1659     avfilter_unref_buffer(pic->opaque);
1660 }
1661
1662 static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
1663 {
1664     AVFilterBufferRef *ref = pic->opaque;
1665
1666     if (pic->data[0] == NULL) {
1667         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
1668         return codec->get_buffer(codec, pic);
1669     }
1670
1671     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||
1672         (codec->pix_fmt != ref->format)) {
1673         av_log(codec, AV_LOG_ERROR, "Picture properties changed.\n");
1674         return -1;
1675     }
1676
1677     pic->reordered_opaque = codec->reordered_opaque;
1678     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1679     else           pic->pkt_pts = AV_NOPTS_VALUE;
1680     return 0;
1681 }
1682
1683 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1684 {
1685     FilterPriv *priv = ctx->priv;
1686     AVCodecContext *codec;
1687     if(!opaque) return -1;
1688
1689     priv->is = opaque;
1690     codec    = priv->is->video_st->codec;
1691     codec->opaque = ctx;
1692     if(codec->codec->capabilities & CODEC_CAP_DR1) {
1693         priv->use_dr1 = 1;
1694         codec->get_buffer     = input_get_buffer;
1695         codec->release_buffer = input_release_buffer;
1696         codec->reget_buffer   = input_reget_buffer;
1697     }
1698
1699     priv->frame = avcodec_alloc_frame();
1700
1701     return 0;
1702 }
1703
1704 static void input_uninit(AVFilterContext *ctx)
1705 {
1706     FilterPriv *priv = ctx->priv;
1707     av_free(priv->frame);
1708 }
1709
1710 static int input_request_frame(AVFilterLink *link)
1711 {
1712     FilterPriv *priv = link->src->priv;
1713     AVFilterBufferRef *picref;
1714     int64_t pts = 0;
1715     AVPacket pkt;
1716     int ret;
1717
1718     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1719         av_free_packet(&pkt);
1720     if (ret < 0)
1721         return -1;
1722
1723     if(priv->use_dr1) {
1724         picref = avfilter_ref_buffer(priv->frame->opaque, ~0);
1725     } else {
1726         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1727         av_image_copy(picref->data, picref->linesize,
1728                       priv->frame->data, priv->frame->linesize,
1729                       picref->format, link->w, link->h);
1730     }
1731     av_free_packet(&pkt);
1732
1733     picref->pts = pts;
1734     picref->pos = pkt.pos;
1735     picref->video->pixel_aspect = priv->is->video_st->codec->sample_aspect_ratio;
1736     avfilter_start_frame(link, picref);
1737     avfilter_draw_slice(link, 0, link->h, 1);
1738     avfilter_end_frame(link);
1739
1740     return 0;
1741 }
1742
1743 static int input_query_formats(AVFilterContext *ctx)
1744 {
1745     FilterPriv *priv = ctx->priv;
1746     enum PixelFormat pix_fmts[] = {
1747         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1748     };
1749
1750     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1751     return 0;
1752 }
1753
1754 static int input_config_props(AVFilterLink *link)
1755 {
1756     FilterPriv *priv  = link->src->priv;
1757     AVCodecContext *c = priv->is->video_st->codec;
1758
1759     link->w = c->width;
1760     link->h = c->height;
1761     link->time_base = priv->is->video_st->time_base;
1762
1763     return 0;
1764 }
1765
1766 static AVFilter input_filter =
1767 {
1768     .name      = "ffplay_input",
1769
1770     .priv_size = sizeof(FilterPriv),
1771
1772     .init      = input_init,
1773     .uninit    = input_uninit,
1774
1775     .query_formats = input_query_formats,
1776
1777     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1778     .outputs   = (AVFilterPad[]) {{ .name = "default",
1779                                     .type = AVMEDIA_TYPE_VIDEO,
1780                                     .request_frame = input_request_frame,
1781                                     .config_props  = input_config_props, },
1782                                   { .name = NULL }},
1783 };
1784
1785 #endif  /* CONFIG_AVFILTER */
1786
1787 static int video_thread(void *arg)
1788 {
1789     VideoState *is = arg;
1790     AVFrame *frame= avcodec_alloc_frame();
1791     int64_t pts_int;
1792     double pts;
1793     int ret;
1794
1795 #if CONFIG_AVFILTER
1796     int64_t pos;
1797     char sws_flags_str[128];
1798     FFSinkContext ffsink_ctx = { .pix_fmt = PIX_FMT_YUV420P };
1799     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1800     AVFilterGraph *graph = avfilter_graph_alloc();
1801     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1802     graph->scale_sws_opts = av_strdup(sws_flags_str);
1803
1804     if (avfilter_graph_create_filter(&filt_src, &input_filter, "src",
1805                                      NULL, is, graph) < 0)
1806         goto the_end;
1807     if (avfilter_graph_create_filter(&filt_out, &ffsink, "out",
1808                                      NULL, &ffsink_ctx, graph) < 0)
1809         goto the_end;
1810
1811     if(vfilters) {
1812         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
1813         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
1814
1815         outputs->name    = av_strdup("in");
1816         outputs->filter_ctx = filt_src;
1817         outputs->pad_idx = 0;
1818         outputs->next    = NULL;
1819
1820         inputs->name    = av_strdup("out");
1821         inputs->filter_ctx = filt_out;
1822         inputs->pad_idx = 0;
1823         inputs->next    = NULL;
1824
1825         if (avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL) < 0)
1826             goto the_end;
1827         av_freep(&vfilters);
1828     } else {
1829         if(avfilter_link(filt_src, 0, filt_out, 0) < 0)          goto the_end;
1830     }
1831
1832     if (avfilter_graph_config(graph, NULL) < 0)
1833         goto the_end;
1834
1835     is->out_video_filter = filt_out;
1836 #endif
1837
1838     for(;;) {
1839 #if !CONFIG_AVFILTER
1840         AVPacket pkt;
1841 #else
1842         AVFilterBufferRef *picref;
1843         AVRational tb;
1844 #endif
1845         while (is->paused && !is->videoq.abort_request)
1846             SDL_Delay(10);
1847 #if CONFIG_AVFILTER
1848         ret = get_filtered_video_frame(filt_out, frame, &picref, &tb);
1849         if (picref) {
1850             pts_int = picref->pts;
1851             pos     = picref->pos;
1852             frame->opaque = picref;
1853         }
1854
1855         if (av_cmp_q(tb, is->video_st->time_base)) {
1856             int64_t pts1 = pts_int;
1857             pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1858             av_log(NULL, AV_LOG_DEBUG, "video_thread(): "
1859                    "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1860                    tb.num, tb.den, pts1,
1861                    is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1862         }
1863 #else
1864         ret = get_video_frame(is, frame, &pts_int, &pkt);
1865 #endif
1866
1867         if (ret < 0) goto the_end;
1868
1869         if (!ret)
1870             continue;
1871
1872         pts = pts_int*av_q2d(is->video_st->time_base);
1873
1874 #if CONFIG_AVFILTER
1875         ret = output_picture2(is, frame, pts, pos);
1876 #else
1877         ret = output_picture2(is, frame, pts,  pkt.pos);
1878         av_free_packet(&pkt);
1879 #endif
1880         if (ret < 0)
1881             goto the_end;
1882
1883         if (step)
1884             if (cur_stream)
1885                 stream_pause(cur_stream);
1886     }
1887  the_end:
1888 #if CONFIG_AVFILTER
1889     avfilter_graph_free(graph);
1890     av_freep(&graph);
1891 #endif
1892     av_free(frame);
1893     return 0;
1894 }
1895
1896 static int subtitle_thread(void *arg)
1897 {
1898     VideoState *is = arg;
1899     SubPicture *sp;
1900     AVPacket pkt1, *pkt = &pkt1;
1901     int len1, got_subtitle;
1902     double pts;
1903     int i, j;
1904     int r, g, b, y, u, v, a;
1905
1906     for(;;) {
1907         while (is->paused && !is->subtitleq.abort_request) {
1908             SDL_Delay(10);
1909         }
1910         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1911             break;
1912
1913         if(pkt->data == flush_pkt.data){
1914             avcodec_flush_buffers(is->subtitle_st->codec);
1915             continue;
1916         }
1917         SDL_LockMutex(is->subpq_mutex);
1918         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1919                !is->subtitleq.abort_request) {
1920             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1921         }
1922         SDL_UnlockMutex(is->subpq_mutex);
1923
1924         if (is->subtitleq.abort_request)
1925             goto the_end;
1926
1927         sp = &is->subpq[is->subpq_windex];
1928
1929        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1930            this packet, if any */
1931         pts = 0;
1932         if (pkt->pts != AV_NOPTS_VALUE)
1933             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1934
1935         len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1936                                     &sp->sub, &got_subtitle,
1937                                     pkt);
1938 //            if (len1 < 0)
1939 //                break;
1940         if (got_subtitle && sp->sub.format == 0) {
1941             sp->pts = pts;
1942
1943             for (i = 0; i < sp->sub.num_rects; i++)
1944             {
1945                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1946                 {
1947                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1948                     y = RGB_TO_Y_CCIR(r, g, b);
1949                     u = RGB_TO_U_CCIR(r, g, b, 0);
1950                     v = RGB_TO_V_CCIR(r, g, b, 0);
1951                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1952                 }
1953             }
1954
1955             /* now we can update the picture count */
1956             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1957                 is->subpq_windex = 0;
1958             SDL_LockMutex(is->subpq_mutex);
1959             is->subpq_size++;
1960             SDL_UnlockMutex(is->subpq_mutex);
1961         }
1962         av_free_packet(pkt);
1963 //        if (step)
1964 //            if (cur_stream)
1965 //                stream_pause(cur_stream);
1966     }
1967  the_end:
1968     return 0;
1969 }
1970
1971 /* copy samples for viewing in editor window */
1972 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1973 {
1974     int size, len, channels;
1975
1976     channels = is->audio_st->codec->channels;
1977
1978     size = samples_size / sizeof(short);
1979     while (size > 0) {
1980         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1981         if (len > size)
1982             len = size;
1983         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1984         samples += len;
1985         is->sample_array_index += len;
1986         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1987             is->sample_array_index = 0;
1988         size -= len;
1989     }
1990 }
1991
1992 /* return the new audio buffer size (samples can be added or deleted
1993    to get better sync if video or external master clock) */
1994 static int synchronize_audio(VideoState *is, short *samples,
1995                              int samples_size1, double pts)
1996 {
1997     int n, samples_size;
1998     double ref_clock;
1999
2000     n = 2 * is->audio_st->codec->channels;
2001     samples_size = samples_size1;
2002
2003     /* if not master, then we try to remove or add samples to correct the clock */
2004     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
2005          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
2006         double diff, avg_diff;
2007         int wanted_size, min_size, max_size, nb_samples;
2008
2009         ref_clock = get_master_clock(is);
2010         diff = get_audio_clock(is) - ref_clock;
2011
2012         if (diff < AV_NOSYNC_THRESHOLD) {
2013             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2014             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2015                 /* not enough measures to have a correct estimate */
2016                 is->audio_diff_avg_count++;
2017             } else {
2018                 /* estimate the A-V difference */
2019                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2020
2021                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2022                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
2023                     nb_samples = samples_size / n;
2024
2025                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2026                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2027                     if (wanted_size < min_size)
2028                         wanted_size = min_size;
2029                     else if (wanted_size > max_size)
2030                         wanted_size = max_size;
2031
2032                     /* add or remove samples to correction the synchro */
2033                     if (wanted_size < samples_size) {
2034                         /* remove samples */
2035                         samples_size = wanted_size;
2036                     } else if (wanted_size > samples_size) {
2037                         uint8_t *samples_end, *q;
2038                         int nb;
2039
2040                         /* add samples */
2041                         nb = (samples_size - wanted_size);
2042                         samples_end = (uint8_t *)samples + samples_size - n;
2043                         q = samples_end + n;
2044                         while (nb > 0) {
2045                             memcpy(q, samples_end, n);
2046                             q += n;
2047                             nb -= n;
2048                         }
2049                         samples_size = wanted_size;
2050                     }
2051                 }
2052 #if 0
2053                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
2054                        diff, avg_diff, samples_size - samples_size1,
2055                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
2056 #endif
2057             }
2058         } else {
2059             /* too big difference : may be initial PTS errors, so
2060                reset A-V filter */
2061             is->audio_diff_avg_count = 0;
2062             is->audio_diff_cum = 0;
2063         }
2064     }
2065
2066     return samples_size;
2067 }
2068
2069 /* decode one audio frame and returns its uncompressed size */
2070 static int audio_decode_frame(VideoState *is, double *pts_ptr)
2071 {
2072     AVPacket *pkt_temp = &is->audio_pkt_temp;
2073     AVPacket *pkt = &is->audio_pkt;
2074     AVCodecContext *dec= is->audio_st->codec;
2075     int n, len1, data_size;
2076     double pts;
2077
2078     for(;;) {
2079         /* NOTE: the audio packet can contain several frames */
2080         while (pkt_temp->size > 0) {
2081             data_size = sizeof(is->audio_buf1);
2082             len1 = avcodec_decode_audio3(dec,
2083                                         (int16_t *)is->audio_buf1, &data_size,
2084                                         pkt_temp);
2085             if (len1 < 0) {
2086                 /* if error, we skip the frame */
2087                 pkt_temp->size = 0;
2088                 break;
2089             }
2090
2091             pkt_temp->data += len1;
2092             pkt_temp->size -= len1;
2093             if (data_size <= 0)
2094                 continue;
2095
2096             if (dec->sample_fmt != is->audio_src_fmt) {
2097                 if (is->reformat_ctx)
2098                     av_audio_convert_free(is->reformat_ctx);
2099                 is->reformat_ctx= av_audio_convert_alloc(AV_SAMPLE_FMT_S16, 1,
2100                                                          dec->sample_fmt, 1, NULL, 0);
2101                 if (!is->reformat_ctx) {
2102                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2103                         av_get_sample_fmt_name(dec->sample_fmt),
2104                         av_get_sample_fmt_name(AV_SAMPLE_FMT_S16));
2105                         break;
2106                 }
2107                 is->audio_src_fmt= dec->sample_fmt;
2108             }
2109
2110             if (is->reformat_ctx) {
2111                 const void *ibuf[6]= {is->audio_buf1};
2112                 void *obuf[6]= {is->audio_buf2};
2113                 int istride[6]= {av_get_bits_per_sample_fmt(dec->sample_fmt)/8};
2114                 int ostride[6]= {2};
2115                 int len= data_size/istride[0];
2116                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2117                     printf("av_audio_convert() failed\n");
2118                     break;
2119                 }
2120                 is->audio_buf= is->audio_buf2;
2121                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2122                           remove this legacy cruft */
2123                 data_size= len*2;
2124             }else{
2125                 is->audio_buf= is->audio_buf1;
2126             }
2127
2128             /* if no pts, then compute it */
2129             pts = is->audio_clock;
2130             *pts_ptr = pts;
2131             n = 2 * dec->channels;
2132             is->audio_clock += (double)data_size /
2133                 (double)(n * dec->sample_rate);
2134 #if defined(DEBUG_SYNC)
2135             {
2136                 static double last_clock;
2137                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2138                        is->audio_clock - last_clock,
2139                        is->audio_clock, pts);
2140                 last_clock = is->audio_clock;
2141             }
2142 #endif
2143             return data_size;
2144         }
2145
2146         /* free the current packet */
2147         if (pkt->data)
2148             av_free_packet(pkt);
2149
2150         if (is->paused || is->audioq.abort_request) {
2151             return -1;
2152         }
2153
2154         /* read next packet */
2155         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2156             return -1;
2157         if(pkt->data == flush_pkt.data){
2158             avcodec_flush_buffers(dec);
2159             continue;
2160         }
2161
2162         pkt_temp->data = pkt->data;
2163         pkt_temp->size = pkt->size;
2164
2165         /* if update the audio clock with the pts */
2166         if (pkt->pts != AV_NOPTS_VALUE) {
2167             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2168         }
2169     }
2170 }
2171
2172 /* get the current audio output buffer size, in samples. With SDL, we
2173    cannot have a precise information */
2174 static int audio_write_get_buf_size(VideoState *is)
2175 {
2176     return is->audio_buf_size - is->audio_buf_index;
2177 }
2178
2179
2180 /* prepare a new audio buffer */
2181 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2182 {
2183     VideoState *is = opaque;
2184     int audio_size, len1;
2185     double pts;
2186
2187     audio_callback_time = av_gettime();
2188
2189     while (len > 0) {
2190         if (is->audio_buf_index >= is->audio_buf_size) {
2191            audio_size = audio_decode_frame(is, &pts);
2192            if (audio_size < 0) {
2193                 /* if error, just output silence */
2194                is->audio_buf = is->audio_buf1;
2195                is->audio_buf_size = 1024;
2196                memset(is->audio_buf, 0, is->audio_buf_size);
2197            } else {
2198                if (is->show_audio)
2199                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2200                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2201                                               pts);
2202                is->audio_buf_size = audio_size;
2203            }
2204            is->audio_buf_index = 0;
2205         }
2206         len1 = is->audio_buf_size - is->audio_buf_index;
2207         if (len1 > len)
2208             len1 = len;
2209         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2210         len -= len1;
2211         stream += len1;
2212         is->audio_buf_index += len1;
2213     }
2214 }
2215
2216 /* open a given stream. Return 0 if OK */
2217 static int stream_component_open(VideoState *is, int stream_index)
2218 {
2219     AVFormatContext *ic = is->ic;
2220     AVCodecContext *avctx;
2221     AVCodec *codec;
2222     SDL_AudioSpec wanted_spec, spec;
2223
2224     if (stream_index < 0 || stream_index >= ic->nb_streams)
2225         return -1;
2226     avctx = ic->streams[stream_index]->codec;
2227
2228     /* prepare audio output */
2229     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2230         if (avctx->channels > 0) {
2231             avctx->request_channels = FFMIN(2, avctx->channels);
2232         } else {
2233             avctx->request_channels = 2;
2234         }
2235     }
2236
2237     codec = avcodec_find_decoder(avctx->codec_id);
2238     avctx->debug_mv = debug_mv;
2239     avctx->debug = debug;
2240     avctx->workaround_bugs = workaround_bugs;
2241     avctx->lowres = lowres;
2242     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2243     avctx->idct_algo= idct;
2244     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2245     avctx->skip_frame= skip_frame;
2246     avctx->skip_idct= skip_idct;
2247     avctx->skip_loop_filter= skip_loop_filter;
2248     avctx->error_recognition= error_recognition;
2249     avctx->error_concealment= error_concealment;
2250     avcodec_thread_init(avctx, thread_count);
2251
2252     set_context_opts(avctx, avcodec_opts[avctx->codec_type], 0, codec);
2253
2254     if (!codec ||
2255         avcodec_open(avctx, codec) < 0)
2256         return -1;
2257
2258     /* prepare audio output */
2259     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2260         wanted_spec.freq = avctx->sample_rate;
2261         wanted_spec.format = AUDIO_S16SYS;
2262         wanted_spec.channels = avctx->channels;
2263         wanted_spec.silence = 0;
2264         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2265         wanted_spec.callback = sdl_audio_callback;
2266         wanted_spec.userdata = is;
2267         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2268             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2269             return -1;
2270         }
2271         is->audio_hw_buf_size = spec.size;
2272         is->audio_src_fmt= AV_SAMPLE_FMT_S16;
2273     }
2274
2275     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2276     switch(avctx->codec_type) {
2277     case AVMEDIA_TYPE_AUDIO:
2278         is->audio_stream = stream_index;
2279         is->audio_st = ic->streams[stream_index];
2280         is->audio_buf_size = 0;
2281         is->audio_buf_index = 0;
2282
2283         /* init averaging filter */
2284         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2285         is->audio_diff_avg_count = 0;
2286         /* since we do not have a precise anough audio fifo fullness,
2287            we correct audio sync only if larger than this threshold */
2288         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2289
2290         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2291         packet_queue_init(&is->audioq);
2292         SDL_PauseAudio(0);
2293         break;
2294     case AVMEDIA_TYPE_VIDEO:
2295         is->video_stream = stream_index;
2296         is->video_st = ic->streams[stream_index];
2297
2298 //        is->video_current_pts_time = av_gettime();
2299
2300         packet_queue_init(&is->videoq);
2301         is->video_tid = SDL_CreateThread(video_thread, is);
2302         break;
2303     case AVMEDIA_TYPE_SUBTITLE:
2304         is->subtitle_stream = stream_index;
2305         is->subtitle_st = ic->streams[stream_index];
2306         packet_queue_init(&is->subtitleq);
2307
2308         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2309         break;
2310     default:
2311         break;
2312     }
2313     return 0;
2314 }
2315
2316 static void stream_component_close(VideoState *is, int stream_index)
2317 {
2318     AVFormatContext *ic = is->ic;
2319     AVCodecContext *avctx;
2320
2321     if (stream_index < 0 || stream_index >= ic->nb_streams)
2322         return;
2323     avctx = ic->streams[stream_index]->codec;
2324
2325     switch(avctx->codec_type) {
2326     case AVMEDIA_TYPE_AUDIO:
2327         packet_queue_abort(&is->audioq);
2328
2329         SDL_CloseAudio();
2330
2331         packet_queue_end(&is->audioq);
2332         if (is->reformat_ctx)
2333             av_audio_convert_free(is->reformat_ctx);
2334         is->reformat_ctx = NULL;
2335         break;
2336     case AVMEDIA_TYPE_VIDEO:
2337         packet_queue_abort(&is->videoq);
2338
2339         /* note: we also signal this mutex to make sure we deblock the
2340            video thread in all cases */
2341         SDL_LockMutex(is->pictq_mutex);
2342         SDL_CondSignal(is->pictq_cond);
2343         SDL_UnlockMutex(is->pictq_mutex);
2344
2345         SDL_WaitThread(is->video_tid, NULL);
2346
2347         packet_queue_end(&is->videoq);
2348         break;
2349     case AVMEDIA_TYPE_SUBTITLE:
2350         packet_queue_abort(&is->subtitleq);
2351
2352         /* note: we also signal this mutex to make sure we deblock the
2353            video thread in all cases */
2354         SDL_LockMutex(is->subpq_mutex);
2355         is->subtitle_stream_changed = 1;
2356
2357         SDL_CondSignal(is->subpq_cond);
2358         SDL_UnlockMutex(is->subpq_mutex);
2359
2360         SDL_WaitThread(is->subtitle_tid, NULL);
2361
2362         packet_queue_end(&is->subtitleq);
2363         break;
2364     default:
2365         break;
2366     }
2367
2368     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2369     avcodec_close(avctx);
2370     switch(avctx->codec_type) {
2371     case AVMEDIA_TYPE_AUDIO:
2372         is->audio_st = NULL;
2373         is->audio_stream = -1;
2374         break;
2375     case AVMEDIA_TYPE_VIDEO:
2376         is->video_st = NULL;
2377         is->video_stream = -1;
2378         break;
2379     case AVMEDIA_TYPE_SUBTITLE:
2380         is->subtitle_st = NULL;
2381         is->subtitle_stream = -1;
2382         break;
2383     default:
2384         break;
2385     }
2386 }
2387
2388 /* since we have only one decoding thread, we can use a global
2389    variable instead of a thread local variable */
2390 static VideoState *global_video_state;
2391
2392 static int decode_interrupt_cb(void)
2393 {
2394     return (global_video_state && global_video_state->abort_request);
2395 }
2396
2397 /* this thread gets the stream from the disk or the network */
2398 static int decode_thread(void *arg)
2399 {
2400     VideoState *is = arg;
2401     AVFormatContext *ic;
2402     int err, i, ret;
2403     int st_index[AVMEDIA_TYPE_NB];
2404     AVPacket pkt1, *pkt = &pkt1;
2405     AVFormatParameters params, *ap = &params;
2406     int eof=0;
2407     int pkt_in_play_range = 0;
2408
2409     ic = avformat_alloc_context();
2410
2411     memset(st_index, -1, sizeof(st_index));
2412     is->video_stream = -1;
2413     is->audio_stream = -1;
2414     is->subtitle_stream = -1;
2415
2416     global_video_state = is;
2417     url_set_interrupt_cb(decode_interrupt_cb);
2418
2419     memset(ap, 0, sizeof(*ap));
2420
2421     ap->prealloced_context = 1;
2422     ap->width = frame_width;
2423     ap->height= frame_height;
2424     ap->time_base= (AVRational){1, 25};
2425     ap->pix_fmt = frame_pix_fmt;
2426
2427     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
2428
2429     err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
2430     if (err < 0) {
2431         print_error(is->filename, err);
2432         ret = -1;
2433         goto fail;
2434     }
2435     is->ic = ic;
2436
2437     if(genpts)
2438         ic->flags |= AVFMT_FLAG_GENPTS;
2439
2440     err = av_find_stream_info(ic);
2441     if (err < 0) {
2442         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2443         ret = -1;
2444         goto fail;
2445     }
2446     if(ic->pb)
2447         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2448
2449     if(seek_by_bytes<0)
2450         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2451
2452     /* if seeking requested, we execute it */
2453     if (start_time != AV_NOPTS_VALUE) {
2454         int64_t timestamp;
2455
2456         timestamp = start_time;
2457         /* add the stream start time */
2458         if (ic->start_time != AV_NOPTS_VALUE)
2459             timestamp += ic->start_time;
2460         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2461         if (ret < 0) {
2462             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2463                     is->filename, (double)timestamp / AV_TIME_BASE);
2464         }
2465     }
2466
2467     for (i = 0; i < ic->nb_streams; i++)
2468         ic->streams[i]->discard = AVDISCARD_ALL;
2469     if (!video_disable)
2470         st_index[AVMEDIA_TYPE_VIDEO] =
2471             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2472                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2473     if (!audio_disable)
2474         st_index[AVMEDIA_TYPE_AUDIO] =
2475             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2476                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2477                                 st_index[AVMEDIA_TYPE_VIDEO],
2478                                 NULL, 0);
2479     if (!video_disable)
2480         st_index[AVMEDIA_TYPE_SUBTITLE] =
2481             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2482                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2483                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2484                                  st_index[AVMEDIA_TYPE_AUDIO] :
2485                                  st_index[AVMEDIA_TYPE_VIDEO]),
2486                                 NULL, 0);
2487     if (show_status) {
2488         dump_format(ic, 0, is->filename, 0);
2489     }
2490
2491     /* open the streams */
2492     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2493         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2494     }
2495
2496     ret=-1;
2497     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2498         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2499     }
2500     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2501     if(ret<0) {
2502         if (!display_disable)
2503             is->show_audio = 2;
2504     }
2505
2506     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2507         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2508     }
2509
2510     if (is->video_stream < 0 && is->audio_stream < 0) {
2511         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2512         ret = -1;
2513         goto fail;
2514     }
2515
2516     for(;;) {
2517         if (is->abort_request)
2518             break;
2519         if (is->paused != is->last_paused) {
2520             is->last_paused = is->paused;
2521             if (is->paused)
2522                 is->read_pause_return= av_read_pause(ic);
2523             else
2524                 av_read_play(ic);
2525         }
2526 #if CONFIG_RTSP_DEMUXER
2527         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2528             /* wait 10 ms to avoid trying to get another packet */
2529             /* XXX: horrible */
2530             SDL_Delay(10);
2531             continue;
2532         }
2533 #endif
2534         if (is->seek_req) {
2535             int64_t seek_target= is->seek_pos;
2536             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2537             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2538 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2539 //      of the seek_pos/seek_rel variables
2540
2541             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2542             if (ret < 0) {
2543                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2544             }else{
2545                 if (is->audio_stream >= 0) {
2546                     packet_queue_flush(&is->audioq);
2547                     packet_queue_put(&is->audioq, &flush_pkt);
2548                 }
2549                 if (is->subtitle_stream >= 0) {
2550                     packet_queue_flush(&is->subtitleq);
2551                     packet_queue_put(&is->subtitleq, &flush_pkt);
2552                 }
2553                 if (is->video_stream >= 0) {
2554                     packet_queue_flush(&is->videoq);
2555                     packet_queue_put(&is->videoq, &flush_pkt);
2556                 }
2557             }
2558             is->seek_req = 0;
2559             eof= 0;
2560         }
2561
2562         /* if the queue are full, no need to read more */
2563         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2564             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2565                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2566                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2567             /* wait 10 ms */
2568             SDL_Delay(10);
2569             continue;
2570         }
2571         if(eof) {
2572             if(is->video_stream >= 0){
2573                 av_init_packet(pkt);
2574                 pkt->data=NULL;
2575                 pkt->size=0;
2576                 pkt->stream_index= is->video_stream;
2577                 packet_queue_put(&is->videoq, pkt);
2578             }
2579             SDL_Delay(10);
2580             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2581                 if(loop!=1 && (!loop || --loop)){
2582                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2583                 }else if(autoexit){
2584                     ret=AVERROR_EOF;
2585                     goto fail;
2586                 }
2587             }
2588             continue;
2589         }
2590         ret = av_read_frame(ic, pkt);
2591         if (ret < 0) {
2592             if (ret == AVERROR_EOF || url_feof(ic->pb))
2593                 eof=1;
2594             if (url_ferror(ic->pb))
2595                 break;
2596             SDL_Delay(100); /* wait for user event */
2597             continue;
2598         }
2599         /* check if packet is in play range specified by user, then queue, otherwise discard */
2600         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2601                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2602                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2603                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2604                 <= ((double)duration/1000000);
2605         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2606             packet_queue_put(&is->audioq, pkt);
2607         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2608             packet_queue_put(&is->videoq, pkt);
2609         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2610             packet_queue_put(&is->subtitleq, pkt);
2611         } else {
2612             av_free_packet(pkt);
2613         }
2614     }
2615     /* wait until the end */
2616     while (!is->abort_request) {
2617         SDL_Delay(100);
2618     }
2619
2620     ret = 0;
2621  fail:
2622     /* disable interrupting */
2623     global_video_state = NULL;
2624
2625     /* close each stream */
2626     if (is->audio_stream >= 0)
2627         stream_component_close(is, is->audio_stream);
2628     if (is->video_stream >= 0)
2629         stream_component_close(is, is->video_stream);
2630     if (is->subtitle_stream >= 0)
2631         stream_component_close(is, is->subtitle_stream);
2632     if (is->ic) {
2633         av_close_input_file(is->ic);
2634         is->ic = NULL; /* safety */
2635     }
2636     url_set_interrupt_cb(NULL);
2637
2638     if (ret != 0) {
2639         SDL_Event event;
2640
2641         event.type = FF_QUIT_EVENT;
2642         event.user.data1 = is;
2643         SDL_PushEvent(&event);
2644     }
2645     return 0;
2646 }
2647
2648 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2649 {
2650     VideoState *is;
2651
2652     is = av_mallocz(sizeof(VideoState));
2653     if (!is)
2654         return NULL;
2655     av_strlcpy(is->filename, filename, sizeof(is->filename));
2656     is->iformat = iformat;
2657     is->ytop = 0;
2658     is->xleft = 0;
2659
2660     /* start video display */
2661     is->pictq_mutex = SDL_CreateMutex();
2662     is->pictq_cond = SDL_CreateCond();
2663
2664     is->subpq_mutex = SDL_CreateMutex();
2665     is->subpq_cond = SDL_CreateCond();
2666
2667     is->av_sync_type = av_sync_type;
2668     is->parse_tid = SDL_CreateThread(decode_thread, is);
2669     if (!is->parse_tid) {
2670         av_free(is);
2671         return NULL;
2672     }
2673     return is;
2674 }
2675
2676 static void stream_cycle_channel(VideoState *is, int codec_type)
2677 {
2678     AVFormatContext *ic = is->ic;
2679     int start_index, stream_index;
2680     AVStream *st;
2681
2682     if (codec_type == AVMEDIA_TYPE_VIDEO)
2683         start_index = is->video_stream;
2684     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2685         start_index = is->audio_stream;
2686     else
2687         start_index = is->subtitle_stream;
2688     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2689         return;
2690     stream_index = start_index;
2691     for(;;) {
2692         if (++stream_index >= is->ic->nb_streams)
2693         {
2694             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2695             {
2696                 stream_index = -1;
2697                 goto the_end;
2698             } else
2699                 stream_index = 0;
2700         }
2701         if (stream_index == start_index)
2702             return;
2703         st = ic->streams[stream_index];
2704         if (st->codec->codec_type == codec_type) {
2705             /* check that parameters are OK */
2706             switch(codec_type) {
2707             case AVMEDIA_TYPE_AUDIO:
2708                 if (st->codec->sample_rate != 0 &&
2709                     st->codec->channels != 0)
2710                     goto the_end;
2711                 break;
2712             case AVMEDIA_TYPE_VIDEO:
2713             case AVMEDIA_TYPE_SUBTITLE:
2714                 goto the_end;
2715             default:
2716                 break;
2717             }
2718         }
2719     }
2720  the_end:
2721     stream_component_close(is, start_index);
2722     stream_component_open(is, stream_index);
2723 }
2724
2725
2726 static void toggle_full_screen(void)
2727 {
2728     is_full_screen = !is_full_screen;
2729     if (!fs_screen_width) {
2730         /* use default SDL method */
2731 //        SDL_WM_ToggleFullScreen(screen);
2732     }
2733     video_open(cur_stream);
2734 }
2735
2736 static void toggle_pause(void)
2737 {
2738     if (cur_stream)
2739         stream_pause(cur_stream);
2740     step = 0;
2741 }
2742
2743 static void step_to_next_frame(void)
2744 {
2745     if (cur_stream) {
2746         /* if the stream is paused unpause it, then step */
2747         if (cur_stream->paused)
2748             stream_pause(cur_stream);
2749     }
2750     step = 1;
2751 }
2752
2753 static void toggle_audio_display(void)
2754 {
2755     if (cur_stream) {
2756         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2757         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2758         fill_rectangle(screen,
2759                     cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2760                     bgcolor);
2761         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2762     }
2763 }
2764
2765 /* handle an event sent by the GUI */
2766 static void event_loop(void)
2767 {
2768     SDL_Event event;
2769     double incr, pos, frac;
2770
2771     for(;;) {
2772         double x;
2773         SDL_WaitEvent(&event);
2774         switch(event.type) {
2775         case SDL_KEYDOWN:
2776             if (exit_on_keydown) {
2777                 do_exit();
2778                 break;
2779             }
2780             switch(event.key.keysym.sym) {
2781             case SDLK_ESCAPE:
2782             case SDLK_q:
2783                 do_exit();
2784                 break;
2785             case SDLK_f:
2786                 toggle_full_screen();
2787                 break;
2788             case SDLK_p:
2789             case SDLK_SPACE:
2790                 toggle_pause();
2791                 break;
2792             case SDLK_s: //S: Step to next frame
2793                 step_to_next_frame();
2794                 break;
2795             case SDLK_a:
2796                 if (cur_stream)
2797                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2798                 break;
2799             case SDLK_v:
2800                 if (cur_stream)
2801                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2802                 break;
2803             case SDLK_t:
2804                 if (cur_stream)
2805                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2806                 break;
2807             case SDLK_w:
2808                 toggle_audio_display();
2809                 break;
2810             case SDLK_LEFT:
2811                 incr = -10.0;
2812                 goto do_seek;
2813             case SDLK_RIGHT:
2814                 incr = 10.0;
2815                 goto do_seek;
2816             case SDLK_UP:
2817                 incr = 60.0;
2818                 goto do_seek;
2819             case SDLK_DOWN:
2820                 incr = -60.0;
2821             do_seek:
2822                 if (cur_stream) {
2823                     if (seek_by_bytes) {
2824                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2825                             pos= cur_stream->video_current_pos;
2826                         }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2827                             pos= cur_stream->audio_pkt.pos;
2828                         }else
2829                             pos = url_ftell(cur_stream->ic->pb);
2830                         if (cur_stream->ic->bit_rate)
2831                             incr *= cur_stream->ic->bit_rate / 8.0;
2832                         else
2833                             incr *= 180000.0;
2834                         pos += incr;
2835                         stream_seek(cur_stream, pos, incr, 1);
2836                     } else {
2837                         pos = get_master_clock(cur_stream);
2838                         pos += incr;
2839                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2840                     }
2841                 }
2842                 break;
2843             default:
2844                 break;
2845             }
2846             break;
2847         case SDL_MOUSEBUTTONDOWN:
2848             if (exit_on_mousedown) {
2849                 do_exit();
2850                 break;
2851             }
2852         case SDL_MOUSEMOTION:
2853             if(event.type ==SDL_MOUSEBUTTONDOWN){
2854                 x= event.button.x;
2855             }else{
2856                 if(event.motion.state != SDL_PRESSED)
2857                     break;
2858                 x= event.motion.x;
2859             }
2860             if (cur_stream) {
2861                 if(seek_by_bytes || cur_stream->ic->duration<=0){
2862                     uint64_t size=  url_fsize(cur_stream->ic->pb);
2863                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2864                 }else{
2865                     int64_t ts;
2866                     int ns, hh, mm, ss;
2867                     int tns, thh, tmm, tss;
2868                     tns = cur_stream->ic->duration/1000000LL;
2869                     thh = tns/3600;
2870                     tmm = (tns%3600)/60;
2871                     tss = (tns%60);
2872                     frac = x/cur_stream->width;
2873                     ns = frac*tns;
2874                     hh = ns/3600;
2875                     mm = (ns%3600)/60;
2876                     ss = (ns%60);
2877                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2878                             hh, mm, ss, thh, tmm, tss);
2879                     ts = frac*cur_stream->ic->duration;
2880                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2881                         ts += cur_stream->ic->start_time;
2882                     stream_seek(cur_stream, ts, 0, 0);
2883                 }
2884             }
2885             break;
2886         case SDL_VIDEORESIZE:
2887             if (cur_stream) {
2888                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2889                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2890                 screen_width = cur_stream->width = event.resize.w;
2891                 screen_height= cur_stream->height= event.resize.h;
2892             }
2893             break;
2894         case SDL_QUIT:
2895         case FF_QUIT_EVENT:
2896             do_exit();
2897             break;
2898         case FF_ALLOC_EVENT:
2899             video_open(event.user.data1);
2900             alloc_picture(event.user.data1);
2901             break;
2902         case FF_REFRESH_EVENT:
2903             video_refresh_timer(event.user.data1);
2904             cur_stream->refresh=0;
2905             break;
2906         default:
2907             break;
2908         }
2909     }
2910 }
2911
2912 static void opt_frame_size(const char *arg)
2913 {
2914     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2915         fprintf(stderr, "Incorrect frame size\n");
2916         exit(1);
2917     }
2918     if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2919         fprintf(stderr, "Frame size must be a multiple of 2\n");
2920         exit(1);
2921     }
2922 }
2923
2924 static int opt_width(const char *opt, const char *arg)
2925 {
2926     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2927     return 0;
2928 }
2929
2930 static int opt_height(const char *opt, const char *arg)
2931 {
2932     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2933     return 0;
2934 }
2935
2936 static void opt_format(const char *arg)
2937 {
2938     file_iformat = av_find_input_format(arg);
2939     if (!file_iformat) {
2940         fprintf(stderr, "Unknown input format: %s\n", arg);
2941         exit(1);
2942     }
2943 }
2944
2945 static void opt_frame_pix_fmt(const char *arg)
2946 {
2947     frame_pix_fmt = av_get_pix_fmt(arg);
2948 }
2949
2950 static int opt_sync(const char *opt, const char *arg)
2951 {
2952     if (!strcmp(arg, "audio"))
2953         av_sync_type = AV_SYNC_AUDIO_MASTER;
2954     else if (!strcmp(arg, "video"))
2955         av_sync_type = AV_SYNC_VIDEO_MASTER;
2956     else if (!strcmp(arg, "ext"))
2957         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2958     else {
2959         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2960         exit(1);
2961     }
2962     return 0;
2963 }
2964
2965 static int opt_seek(const char *opt, const char *arg)
2966 {
2967     start_time = parse_time_or_die(opt, arg, 1);
2968     return 0;
2969 }
2970
2971 static int opt_duration(const char *opt, const char *arg)
2972 {
2973     duration = parse_time_or_die(opt, arg, 1);
2974     return 0;
2975 }
2976
2977 static int opt_debug(const char *opt, const char *arg)
2978 {
2979     av_log_set_level(99);
2980     debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2981     return 0;
2982 }
2983
2984 static int opt_vismv(const char *opt, const char *arg)
2985 {
2986     debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2987     return 0;
2988 }
2989
2990 static int opt_thread_count(const char *opt, const char *arg)
2991 {
2992     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2993 #if !HAVE_THREADS
2994     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2995 #endif
2996     return 0;
2997 }
2998
2999 static const OptionDef options[] = {
3000 #include "cmdutils_common_opts.h"
3001     { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
3002     { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
3003     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
3004     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
3005     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
3006     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
3007     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
3008     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
3009     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
3010     { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
3011     { "t", HAS_ARG | OPT_FUNC2, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
3012     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
3013     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
3014     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
3015     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
3016     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
3017     { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
3018     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
3019     { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
3020     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
3021     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
3022     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3023     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
3024     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
3025     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
3026     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
3027     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
3028     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
3029     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
3030     { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
3031     { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
3032     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
3033     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_keydown}, "exit on key down", "" },
3034     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_mousedown}, "exit on mouse down", "" },
3035     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
3036     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
3037     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
3038 #if CONFIG_AVFILTER
3039     { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
3040 #endif
3041     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
3042     { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
3043     { NULL, },
3044 };
3045
3046 static void show_usage(void)
3047 {
3048     printf("Simple media player\n");
3049     printf("usage: ffplay [options] input_file\n");
3050     printf("\n");
3051 }
3052
3053 static void show_help(void)
3054 {
3055     av_log_set_callback(log_callback_help);
3056     show_usage();
3057     show_help_options(options, "Main options:\n",
3058                       OPT_EXPERT, 0);
3059     show_help_options(options, "\nAdvanced options:\n",
3060                       OPT_EXPERT, OPT_EXPERT);
3061     printf("\n");
3062     av_opt_show2(avcodec_opts[0], NULL,
3063                  AV_OPT_FLAG_DECODING_PARAM, 0);
3064     printf("\n");
3065     av_opt_show2(avformat_opts, NULL,
3066                  AV_OPT_FLAG_DECODING_PARAM, 0);
3067 #if !CONFIG_AVFILTER
3068     printf("\n");
3069     av_opt_show2(sws_opts, NULL,
3070                  AV_OPT_FLAG_ENCODING_PARAM, 0);
3071 #endif
3072     printf("\nWhile playing:\n"
3073            "q, ESC              quit\n"
3074            "f                   toggle full screen\n"
3075            "p, SPC              pause\n"
3076            "a                   cycle audio channel\n"
3077            "v                   cycle video channel\n"
3078            "t                   cycle subtitle channel\n"
3079            "w                   show audio waves\n"
3080            "s                   activate frame-step mode\n"
3081            "left/right          seek backward/forward 10 seconds\n"
3082            "down/up             seek backward/forward 1 minute\n"
3083            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3084            );
3085 }
3086
3087 static void opt_input_file(const char *filename)
3088 {
3089     if (input_filename) {
3090         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3091                 filename, input_filename);
3092         exit(1);
3093     }
3094     if (!strcmp(filename, "-"))
3095         filename = "pipe:";
3096     input_filename = filename;
3097 }
3098
3099 /* Called from the main */
3100 int main(int argc, char **argv)
3101 {
3102     int flags;
3103
3104     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3105
3106     /* register all codecs, demux and protocols */
3107     avcodec_register_all();
3108 #if CONFIG_AVDEVICE
3109     avdevice_register_all();
3110 #endif
3111 #if CONFIG_AVFILTER
3112     avfilter_register_all();
3113 #endif
3114     av_register_all();
3115
3116     init_opts();
3117
3118     show_banner();
3119
3120     parse_options(argc, argv, options, opt_input_file);
3121
3122     if (!input_filename) {
3123         show_usage();
3124         fprintf(stderr, "An input file must be specified\n");
3125         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffplay'\n");
3126         exit(1);
3127     }
3128
3129     if (display_disable) {
3130         video_disable = 1;
3131     }
3132     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3133 #if !defined(__MINGW32__) && !defined(__APPLE__)
3134     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3135 #endif
3136     if (SDL_Init (flags)) {
3137         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3138         exit(1);
3139     }
3140
3141     if (!display_disable) {
3142 #if HAVE_SDL_VIDEO_SIZE
3143         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3144         fs_screen_width = vi->current_w;
3145         fs_screen_height = vi->current_h;
3146 #endif
3147     }
3148
3149     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3150     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3151     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3152
3153     av_init_packet(&flush_pkt);
3154     flush_pkt.data= "FLUSH";
3155
3156     cur_stream = stream_open(input_filename, file_iformat);
3157
3158     event_loop();
3159
3160     /* never returns */
3161
3162     return 0;
3163 }