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