5e5518eeaccf812dcc5ef95743f3559349a5b284
[ffmpeg.git] / avplay.c
1 /*
2  * avplay : Simple Media Player based on the Libav libraries
3  * Copyright (c) 2003 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <inttypes.h>
24 #include <math.h>
25 #include <limits.h>
26 #include <stdint.h>
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/colorspace.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/dict.h"
34 #include "libavutil/parseutils.h"
35 #include "libavutil/samplefmt.h"
36 #include "libavutil/time.h"
37 #include "libavformat/avformat.h"
38 #include "libavdevice/avdevice.h"
39 #include "libswscale/swscale.h"
40 #include "libavresample/avresample.h"
41 #include "libavutil/opt.h"
42 #include "libavcodec/avfft.h"
43
44 #if CONFIG_AVFILTER
45 # include "libavfilter/avfilter.h"
46 # include "libavfilter/buffersink.h"
47 # include "libavfilter/buffersrc.h"
48 #endif
49
50 #include "cmdutils.h"
51
52 #include <SDL.h>
53 #include <SDL_thread.h>
54
55 #ifdef __MINGW32__
56 #undef main /* We don't want SDL to override our main() */
57 #endif
58
59 #include <assert.h>
60
61 const char program_name[] = "avplay";
62 const int program_birth_year = 2003;
63
64 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
65 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
66 #define MIN_FRAMES 5
67
68 /* SDL audio buffer size, in samples. Should be small to have precise
69    A/V sync as SDL does not have hardware buffer fullness info. */
70 #define SDL_AUDIO_BUFFER_SIZE 1024
71
72 /* no AV sync correction is done if below the AV sync threshold */
73 #define AV_SYNC_THRESHOLD 0.01
74 /* no AV correction is done if too big error */
75 #define AV_NOSYNC_THRESHOLD 10.0
76
77 #define FRAME_SKIP_FACTOR 0.05
78
79 /* maximum audio speed change to get correct sync */
80 #define SAMPLE_CORRECTION_PERCENT_MAX 10
81
82 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
83 #define AUDIO_DIFF_AVG_NB   20
84
85 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
86 #define SAMPLE_ARRAY_SIZE (2 * 65536)
87
88 static int64_t sws_flags = SWS_BICUBIC;
89
90 typedef struct PacketQueue {
91     AVPacketList *first_pkt, *last_pkt;
92     int nb_packets;
93     int size;
94     int abort_request;
95     SDL_mutex *mutex;
96     SDL_cond *cond;
97 } PacketQueue;
98
99 #define VIDEO_PICTURE_QUEUE_SIZE 2
100 #define SUBPICTURE_QUEUE_SIZE 4
101
102 typedef struct VideoPicture {
103     double pts;             // presentation timestamp for this picture
104     double target_clock;    // av_gettime_relative() time at which this should be displayed ideally
105     int64_t pos;            // byte position in file
106     SDL_Overlay *bmp;
107     int width, height; /* source height & width */
108     int allocated;
109     int reallocate;
110     enum AVPixelFormat pix_fmt;
111
112     AVRational sar;
113 } VideoPicture;
114
115 typedef struct SubPicture {
116     double pts; /* presentation time stamp for this picture */
117     AVSubtitle sub;
118 } SubPicture;
119
120 enum {
121     AV_SYNC_AUDIO_MASTER, /* default choice */
122     AV_SYNC_VIDEO_MASTER,
123     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
124 };
125
126 typedef struct VideoState {
127     SDL_Thread *parse_tid;
128     SDL_Thread *video_tid;
129     SDL_Thread *refresh_tid;
130     AVInputFormat *iformat;
131     int no_background;
132     int abort_request;
133     int paused;
134     int last_paused;
135     int seek_req;
136     int seek_flags;
137     int64_t seek_pos;
138     int64_t seek_rel;
139     int read_pause_return;
140     AVFormatContext *ic;
141
142     int audio_stream;
143
144     int av_sync_type;
145     double external_clock; /* external clock base */
146     int64_t external_clock_time;
147
148     double audio_clock;
149     double audio_diff_cum; /* used for AV difference average computation */
150     double audio_diff_avg_coef;
151     double audio_diff_threshold;
152     int audio_diff_avg_count;
153     AVStream *audio_st;
154     PacketQueue audioq;
155     int audio_hw_buf_size;
156     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
157     uint8_t *audio_buf;
158     uint8_t *audio_buf1;
159     unsigned int audio_buf_size; /* in bytes */
160     int audio_buf_index; /* in bytes */
161     AVPacket audio_pkt_temp;
162     AVPacket audio_pkt;
163     enum AVSampleFormat sdl_sample_fmt;
164     uint64_t sdl_channel_layout;
165     int sdl_channels;
166     int sdl_sample_rate;
167     enum AVSampleFormat resample_sample_fmt;
168     uint64_t resample_channel_layout;
169     int resample_sample_rate;
170     AVAudioResampleContext *avr;
171     AVFrame *frame;
172
173     int show_audio; /* if true, display audio samples */
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_relative) 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     //    QETimer *video_timer;
211     char filename[1024];
212     int width, height, xleft, ytop;
213
214     PtsCorrectionContext pts_ctx;
215
216 #if CONFIG_AVFILTER
217     AVFilterContext *in_video_filter;   // the first filter in the video chain
218     AVFilterContext *out_video_filter;  // the last filter in the video chain
219 #endif
220
221     float skip_frames;
222     float skip_frames_index;
223     int refresh;
224 } VideoState;
225
226 /* options specified by the user */
227 static AVInputFormat *file_iformat;
228 static const char *input_filename;
229 static const char *window_title;
230 static int fs_screen_width;
231 static int fs_screen_height;
232 static int screen_width  = 0;
233 static int screen_height = 0;
234 static int audio_disable;
235 static int video_disable;
236 static int wanted_stream[AVMEDIA_TYPE_NB] = {
237     [AVMEDIA_TYPE_AUDIO]    = -1,
238     [AVMEDIA_TYPE_VIDEO]    = -1,
239     [AVMEDIA_TYPE_SUBTITLE] = -1,
240 };
241 static int seek_by_bytes = -1;
242 static int display_disable;
243 static int show_status = 1;
244 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
245 static int64_t start_time = AV_NOPTS_VALUE;
246 static int64_t duration = AV_NOPTS_VALUE;
247 static int step = 0;
248 static int workaround_bugs = 1;
249 static int fast = 0;
250 static int genpts = 0;
251 static int idct = FF_IDCT_AUTO;
252 static enum AVDiscard skip_frame       = AVDISCARD_DEFAULT;
253 static enum AVDiscard skip_idct        = AVDISCARD_DEFAULT;
254 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
255 static int error_concealment = 3;
256 static int decoder_reorder_pts = -1;
257 static int noautoexit;
258 static int exit_on_keydown;
259 static int exit_on_mousedown;
260 static int loop = 1;
261 static int framedrop = 1;
262 static int infinite_buffer = 0;
263
264 static int rdftspeed = 20;
265 #if CONFIG_AVFILTER
266 static char *vfilters = NULL;
267 #endif
268
269 /* current context */
270 static int is_full_screen;
271 static VideoState *cur_stream;
272 static int64_t audio_callback_time;
273
274 static AVPacket flush_pkt;
275
276 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
277 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
278 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
279
280 static SDL_Surface *screen;
281
282 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
283
284 /* packet queue handling */
285 static void packet_queue_init(PacketQueue *q)
286 {
287     memset(q, 0, sizeof(PacketQueue));
288     q->mutex = SDL_CreateMutex();
289     q->cond = SDL_CreateCond();
290     packet_queue_put(q, &flush_pkt);
291 }
292
293 static void packet_queue_flush(PacketQueue *q)
294 {
295     AVPacketList *pkt, *pkt1;
296
297     SDL_LockMutex(q->mutex);
298     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
299         pkt1 = pkt->next;
300         av_free_packet(&pkt->pkt);
301         av_freep(&pkt);
302     }
303     q->last_pkt = NULL;
304     q->first_pkt = NULL;
305     q->nb_packets = 0;
306     q->size = 0;
307     SDL_UnlockMutex(q->mutex);
308 }
309
310 static void packet_queue_end(PacketQueue *q)
311 {
312     packet_queue_flush(q);
313     SDL_DestroyMutex(q->mutex);
314     SDL_DestroyCond(q->cond);
315 }
316
317 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
318 {
319     AVPacketList *pkt1;
320
321     /* duplicate the packet */
322     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
323         return -1;
324
325     pkt1 = av_malloc(sizeof(AVPacketList));
326     if (!pkt1)
327         return -1;
328     pkt1->pkt = *pkt;
329     pkt1->next = NULL;
330
331
332     SDL_LockMutex(q->mutex);
333
334     if (!q->last_pkt)
335
336         q->first_pkt = pkt1;
337     else
338         q->last_pkt->next = pkt1;
339     q->last_pkt = pkt1;
340     q->nb_packets++;
341     q->size += pkt1->pkt.size + sizeof(*pkt1);
342     /* XXX: should duplicate packet data in DV case */
343     SDL_CondSignal(q->cond);
344
345     SDL_UnlockMutex(q->mutex);
346     return 0;
347 }
348
349 static void packet_queue_abort(PacketQueue *q)
350 {
351     SDL_LockMutex(q->mutex);
352
353     q->abort_request = 1;
354
355     SDL_CondSignal(q->cond);
356
357     SDL_UnlockMutex(q->mutex);
358 }
359
360 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
361 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
362 {
363     AVPacketList *pkt1;
364     int ret;
365
366     SDL_LockMutex(q->mutex);
367
368     for (;;) {
369         if (q->abort_request) {
370             ret = -1;
371             break;
372         }
373
374         pkt1 = q->first_pkt;
375         if (pkt1) {
376             q->first_pkt = pkt1->next;
377             if (!q->first_pkt)
378                 q->last_pkt = NULL;
379             q->nb_packets--;
380             q->size -= pkt1->pkt.size + sizeof(*pkt1);
381             *pkt = pkt1->pkt;
382             av_free(pkt1);
383             ret = 1;
384             break;
385         } else if (!block) {
386             ret = 0;
387             break;
388         } else {
389             SDL_CondWait(q->cond, q->mutex);
390         }
391     }
392     SDL_UnlockMutex(q->mutex);
393     return ret;
394 }
395
396 static inline void fill_rectangle(SDL_Surface *screen,
397                                   int x, int y, int w, int h, int color)
398 {
399     SDL_Rect rect;
400     rect.x = x;
401     rect.y = y;
402     rect.w = w;
403     rect.h = h;
404     SDL_FillRect(screen, &rect, color);
405 }
406
407 #define ALPHA_BLEND(a, oldp, newp, s)\
408 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
409
410 #define RGBA_IN(r, g, b, a, s)\
411 {\
412     unsigned int v = ((const uint32_t *)(s))[0];\
413     a = (v >> 24) & 0xff;\
414     r = (v >> 16) & 0xff;\
415     g = (v >> 8) & 0xff;\
416     b = v & 0xff;\
417 }
418
419 #define YUVA_IN(y, u, v, a, s, pal)\
420 {\
421     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
422     a = (val >> 24) & 0xff;\
423     y = (val >> 16) & 0xff;\
424     u = (val >> 8) & 0xff;\
425     v = val & 0xff;\
426 }
427
428 #define YUVA_OUT(d, y, u, v, a)\
429 {\
430     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
431 }
432
433
434 #define BPP 1
435
436 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
437 {
438     int wrap, wrap3, width2, skip2;
439     int y, u, v, a, u1, v1, a1, w, h;
440     uint8_t *lum, *cb, *cr;
441     const uint8_t *p;
442     const uint32_t *pal;
443     int dstx, dsty, dstw, dsth;
444
445     dstw = av_clip(rect->w, 0, imgw);
446     dsth = av_clip(rect->h, 0, imgh);
447     dstx = av_clip(rect->x, 0, imgw - dstw);
448     dsty = av_clip(rect->y, 0, imgh - dsth);
449     lum = dst->data[0] + dsty * dst->linesize[0];
450     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
451     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
452
453     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
454     skip2 = dstx >> 1;
455     wrap = dst->linesize[0];
456     wrap3 = rect->pict.linesize[0];
457     p = rect->pict.data[0];
458     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
459
460     if (dsty & 1) {
461         lum += dstx;
462         cb += skip2;
463         cr += skip2;
464
465         if (dstx & 1) {
466             YUVA_IN(y, u, v, a, p, pal);
467             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
468             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
469             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
470             cb++;
471             cr++;
472             lum++;
473             p += BPP;
474         }
475         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
476             YUVA_IN(y, u, v, a, p, pal);
477             u1 = u;
478             v1 = v;
479             a1 = a;
480             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
481
482             YUVA_IN(y, u, v, a, p + BPP, pal);
483             u1 += u;
484             v1 += v;
485             a1 += a;
486             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
487             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
488             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
489             cb++;
490             cr++;
491             p += 2 * BPP;
492             lum += 2;
493         }
494         if (w) {
495             YUVA_IN(y, u, v, a, p, pal);
496             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
497             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
498             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
499             p++;
500             lum++;
501         }
502         p += wrap3 - dstw * BPP;
503         lum += wrap - dstw - dstx;
504         cb += dst->linesize[1] - width2 - skip2;
505         cr += dst->linesize[2] - width2 - skip2;
506     }
507     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
508         lum += dstx;
509         cb += skip2;
510         cr += skip2;
511
512         if (dstx & 1) {
513             YUVA_IN(y, u, v, a, p, pal);
514             u1 = u;
515             v1 = v;
516             a1 = a;
517             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
518             p += wrap3;
519             lum += wrap;
520             YUVA_IN(y, u, v, a, p, pal);
521             u1 += u;
522             v1 += v;
523             a1 += a;
524             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
525             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
526             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
527             cb++;
528             cr++;
529             p += -wrap3 + BPP;
530             lum += -wrap + 1;
531         }
532         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
533             YUVA_IN(y, u, v, a, p, pal);
534             u1 = u;
535             v1 = v;
536             a1 = a;
537             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
538
539             YUVA_IN(y, u, v, a, p + BPP, pal);
540             u1 += u;
541             v1 += v;
542             a1 += a;
543             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
544             p += wrap3;
545             lum += wrap;
546
547             YUVA_IN(y, u, v, a, p, pal);
548             u1 += u;
549             v1 += v;
550             a1 += a;
551             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
552
553             YUVA_IN(y, u, v, a, p + BPP, pal);
554             u1 += u;
555             v1 += v;
556             a1 += a;
557             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
558
559             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
560             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
561
562             cb++;
563             cr++;
564             p += -wrap3 + 2 * BPP;
565             lum += -wrap + 2;
566         }
567         if (w) {
568             YUVA_IN(y, u, v, a, p, pal);
569             u1 = u;
570             v1 = v;
571             a1 = a;
572             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
573             p += wrap3;
574             lum += wrap;
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             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
581             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
582             cb++;
583             cr++;
584             p += -wrap3 + BPP;
585             lum += -wrap + 1;
586         }
587         p += wrap3 + (wrap3 - dstw * BPP);
588         lum += wrap + (wrap - dstw - dstx);
589         cb += dst->linesize[1] - width2 - skip2;
590         cr += dst->linesize[2] - width2 - skip2;
591     }
592     /* handle odd height */
593     if (h) {
594         lum += dstx;
595         cb += skip2;
596         cr += skip2;
597
598         if (dstx & 1) {
599             YUVA_IN(y, u, v, a, p, pal);
600             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
601             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
602             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
603             cb++;
604             cr++;
605             lum++;
606             p += BPP;
607         }
608         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
609             YUVA_IN(y, u, v, a, p, pal);
610             u1 = u;
611             v1 = v;
612             a1 = a;
613             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
614
615             YUVA_IN(y, u, v, a, p + BPP, pal);
616             u1 += u;
617             v1 += v;
618             a1 += a;
619             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
620             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
621             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
622             cb++;
623             cr++;
624             p += 2 * BPP;
625             lum += 2;
626         }
627         if (w) {
628             YUVA_IN(y, u, v, a, p, pal);
629             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
630             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
631             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
632         }
633     }
634 }
635
636 static void free_subpicture(SubPicture *sp)
637 {
638     avsubtitle_free(&sp->sub);
639 }
640
641 static void video_image_display(VideoState *is)
642 {
643     VideoPicture *vp;
644     SubPicture *sp;
645     AVPicture pict;
646     float aspect_ratio;
647     int width, height, x, y;
648     SDL_Rect rect;
649     int i;
650
651     vp = &is->pictq[is->pictq_rindex];
652     if (vp->bmp) {
653 #if CONFIG_AVFILTER
654          if (!vp->sar.num)
655              aspect_ratio = 0;
656          else
657              aspect_ratio = av_q2d(vp->sar);
658 #else
659
660         /* XXX: use variable in the frame */
661         if (is->video_st->sample_aspect_ratio.num)
662             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
663         else if (is->video_st->codec->sample_aspect_ratio.num)
664             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
665         else
666             aspect_ratio = 0;
667 #endif
668         if (aspect_ratio <= 0.0)
669             aspect_ratio = 1.0;
670         aspect_ratio *= (float)vp->width / (float)vp->height;
671
672         if (is->subtitle_st)
673         {
674             if (is->subpq_size > 0)
675             {
676                 sp = &is->subpq[is->subpq_rindex];
677
678                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
679                 {
680                     SDL_LockYUVOverlay (vp->bmp);
681
682                     pict.data[0] = vp->bmp->pixels[0];
683                     pict.data[1] = vp->bmp->pixels[2];
684                     pict.data[2] = vp->bmp->pixels[1];
685
686                     pict.linesize[0] = vp->bmp->pitches[0];
687                     pict.linesize[1] = vp->bmp->pitches[2];
688                     pict.linesize[2] = vp->bmp->pitches[1];
689
690                     for (i = 0; i < sp->sub.num_rects; i++)
691                         blend_subrect(&pict, sp->sub.rects[i],
692                                       vp->bmp->w, vp->bmp->h);
693
694                     SDL_UnlockYUVOverlay (vp->bmp);
695                 }
696             }
697         }
698
699
700         /* XXX: we suppose the screen has a 1.0 pixel ratio */
701         height = is->height;
702         width = ((int)rint(height * aspect_ratio)) & ~1;
703         if (width > is->width) {
704             width = is->width;
705             height = ((int)rint(width / aspect_ratio)) & ~1;
706         }
707         x = (is->width - width) / 2;
708         y = (is->height - height) / 2;
709         is->no_background = 0;
710         rect.x = is->xleft + x;
711         rect.y = is->ytop  + y;
712         rect.w = width;
713         rect.h = height;
714         SDL_DisplayYUVOverlay(vp->bmp, &rect);
715     }
716 }
717
718 /* get the current audio output buffer size, in samples. With SDL, we
719    cannot have a precise information */
720 static int audio_write_get_buf_size(VideoState *is)
721 {
722     return is->audio_buf_size - is->audio_buf_index;
723 }
724
725 static inline int compute_mod(int a, int b)
726 {
727     a = a % b;
728     if (a >= 0)
729         return a;
730     else
731         return a + b;
732 }
733
734 static void video_audio_display(VideoState *s)
735 {
736     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
737     int ch, channels, h, h2, bgcolor, fgcolor;
738     int16_t time_diff;
739     int rdft_bits, nb_freq;
740
741     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
742         ;
743     nb_freq = 1 << (rdft_bits - 1);
744
745     /* compute display index : center on currently output samples */
746     channels = s->sdl_channels;
747     nb_display_channels = channels;
748     if (!s->paused) {
749         int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
750         n = 2 * channels;
751         delay = audio_write_get_buf_size(s);
752         delay /= n;
753
754         /* to be more precise, we take into account the time spent since
755            the last buffer computation */
756         if (audio_callback_time) {
757             time_diff = av_gettime_relative() - audio_callback_time;
758             delay -= (time_diff * s->sdl_sample_rate) / 1000000;
759         }
760
761         delay += 2 * data_used;
762         if (delay < data_used)
763             delay = data_used;
764
765         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
766         if (s->show_audio == 1) {
767             h = INT_MIN;
768             for (i = 0; i < 1000; i += channels) {
769                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
770                 int a = s->sample_array[idx];
771                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
772                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
773                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
774                 int score = a - d;
775                 if (h < score && (b ^ c) < 0) {
776                     h = score;
777                     i_start = idx;
778                 }
779             }
780         }
781
782         s->last_i_start = i_start;
783     } else {
784         i_start = s->last_i_start;
785     }
786
787     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
788     if (s->show_audio == 1) {
789         fill_rectangle(screen,
790                        s->xleft, s->ytop, s->width, s->height,
791                        bgcolor);
792
793         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
794
795         /* total height for one channel */
796         h = s->height / nb_display_channels;
797         /* graph height / 2 */
798         h2 = (h * 9) / 20;
799         for (ch = 0; ch < nb_display_channels; ch++) {
800             i = i_start + ch;
801             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
802             for (x = 0; x < s->width; x++) {
803                 y = (s->sample_array[i] * h2) >> 15;
804                 if (y < 0) {
805                     y = -y;
806                     ys = y1 - y;
807                 } else {
808                     ys = y1;
809                 }
810                 fill_rectangle(screen,
811                                s->xleft + x, ys, 1, y,
812                                fgcolor);
813                 i += channels;
814                 if (i >= SAMPLE_ARRAY_SIZE)
815                     i -= SAMPLE_ARRAY_SIZE;
816             }
817         }
818
819         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
820
821         for (ch = 1; ch < nb_display_channels; ch++) {
822             y = s->ytop + ch * h;
823             fill_rectangle(screen,
824                            s->xleft, y, s->width, 1,
825                            fgcolor);
826         }
827         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
828     } else {
829         nb_display_channels= FFMIN(nb_display_channels, 2);
830         if (rdft_bits != s->rdft_bits) {
831             av_rdft_end(s->rdft);
832             av_free(s->rdft_data);
833             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
834             s->rdft_bits = rdft_bits;
835             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
836         }
837         {
838             FFTSample *data[2];
839             for (ch = 0; ch < nb_display_channels; ch++) {
840                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
841                 i = i_start + ch;
842                 for (x = 0; x < 2 * nb_freq; x++) {
843                     double w = (x-nb_freq) * (1.0 / nb_freq);
844                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
845                     i += channels;
846                     if (i >= SAMPLE_ARRAY_SIZE)
847                         i -= SAMPLE_ARRAY_SIZE;
848                 }
849                 av_rdft_calc(s->rdft, data[ch]);
850             }
851             /* Least efficient way to do this, we should of course
852              * directly access it but it is more than fast enough. */
853             for (y = 0; y < s->height; y++) {
854                 double w = 1 / sqrt(nb_freq);
855                 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]));
856                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
857                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
858                 a = FFMIN(a, 255);
859                 b = FFMIN(b, 255);
860                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
861
862                 fill_rectangle(screen,
863                             s->xpos, s->height-y, 1, 1,
864                             fgcolor);
865             }
866         }
867         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
868         s->xpos++;
869         if (s->xpos >= s->width)
870             s->xpos= s->xleft;
871     }
872 }
873
874 static int video_open(VideoState *is)
875 {
876     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
877     int w,h;
878
879     if (is_full_screen) flags |= SDL_FULLSCREEN;
880     else                flags |= SDL_RESIZABLE;
881
882     if (is_full_screen && fs_screen_width) {
883         w = fs_screen_width;
884         h = fs_screen_height;
885     } else if (!is_full_screen && screen_width) {
886         w = screen_width;
887         h = screen_height;
888 #if CONFIG_AVFILTER
889     } else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
890         w = is->out_video_filter->inputs[0]->w;
891         h = is->out_video_filter->inputs[0]->h;
892 #else
893     } else if (is->video_st && is->video_st->codec->width) {
894         w = is->video_st->codec->width;
895         h = is->video_st->codec->height;
896 #endif
897     } else {
898         w = 640;
899         h = 480;
900     }
901     if (screen && is->width == screen->w && screen->w == w
902        && is->height== screen->h && screen->h == h)
903         return 0;
904
905 #if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
906     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
907     screen = SDL_SetVideoMode(w, h, 24, flags);
908 #else
909     screen = SDL_SetVideoMode(w, h, 0, flags);
910 #endif
911     if (!screen) {
912         fprintf(stderr, "SDL: could not set video mode - exiting\n");
913         return -1;
914     }
915     if (!window_title)
916         window_title = input_filename;
917     SDL_WM_SetCaption(window_title, window_title);
918
919     is->width  = screen->w;
920     is->height = screen->h;
921
922     return 0;
923 }
924
925 /* display the current picture, if any */
926 static void video_display(VideoState *is)
927 {
928     if (!screen)
929         video_open(cur_stream);
930     if (is->audio_st && is->show_audio)
931         video_audio_display(is);
932     else if (is->video_st)
933         video_image_display(is);
934 }
935
936 static int refresh_thread(void *opaque)
937 {
938     VideoState *is= opaque;
939     while (!is->abort_request) {
940         SDL_Event event;
941         event.type = FF_REFRESH_EVENT;
942         event.user.data1 = opaque;
943         if (!is->refresh) {
944             is->refresh = 1;
945             SDL_PushEvent(&event);
946         }
947         av_usleep(is->audio_st && is->show_audio ? rdftspeed * 1000 : 5000); // FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
948     }
949     return 0;
950 }
951
952 /* get the current audio clock value */
953 static double get_audio_clock(VideoState *is)
954 {
955     double pts;
956     int hw_buf_size, bytes_per_sec;
957     pts = is->audio_clock;
958     hw_buf_size = audio_write_get_buf_size(is);
959     bytes_per_sec = 0;
960     if (is->audio_st) {
961         bytes_per_sec = is->sdl_sample_rate * is->sdl_channels *
962                         av_get_bytes_per_sample(is->sdl_sample_fmt);
963     }
964     if (bytes_per_sec)
965         pts -= (double)hw_buf_size / bytes_per_sec;
966     return pts;
967 }
968
969 /* get the current video clock value */
970 static double get_video_clock(VideoState *is)
971 {
972     if (is->paused) {
973         return is->video_current_pts;
974     } else {
975         return is->video_current_pts_drift + av_gettime_relative() / 1000000.0;
976     }
977 }
978
979 /* get the current external clock value */
980 static double get_external_clock(VideoState *is)
981 {
982     int64_t ti;
983     ti = av_gettime_relative();
984     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
985 }
986
987 /* get the current master clock value */
988 static double get_master_clock(VideoState *is)
989 {
990     double val;
991
992     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
993         if (is->video_st)
994             val = get_video_clock(is);
995         else
996             val = get_audio_clock(is);
997     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
998         if (is->audio_st)
999             val = get_audio_clock(is);
1000         else
1001             val = get_video_clock(is);
1002     } else {
1003         val = get_external_clock(is);
1004     }
1005     return val;
1006 }
1007
1008 /* seek in the stream */
1009 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1010 {
1011     if (!is->seek_req) {
1012         is->seek_pos = pos;
1013         is->seek_rel = rel;
1014         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1015         if (seek_by_bytes)
1016             is->seek_flags |= AVSEEK_FLAG_BYTE;
1017         is->seek_req = 1;
1018     }
1019 }
1020
1021 /* pause or resume the video */
1022 static void stream_pause(VideoState *is)
1023 {
1024     if (is->paused) {
1025         is->frame_timer += av_gettime_relative() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1026         if (is->read_pause_return != AVERROR(ENOSYS)) {
1027             is->video_current_pts = is->video_current_pts_drift + av_gettime_relative() / 1000000.0;
1028         }
1029         is->video_current_pts_drift = is->video_current_pts - av_gettime_relative() / 1000000.0;
1030     }
1031     is->paused = !is->paused;
1032 }
1033
1034 static double compute_target_time(double frame_current_pts, VideoState *is)
1035 {
1036     double delay, sync_threshold, diff = 0;
1037
1038     /* compute nominal delay */
1039     delay = frame_current_pts - is->frame_last_pts;
1040     if (delay <= 0 || delay >= 10.0) {
1041         /* if incorrect delay, use previous one */
1042         delay = is->frame_last_delay;
1043     } else {
1044         is->frame_last_delay = delay;
1045     }
1046     is->frame_last_pts = frame_current_pts;
1047
1048     /* update delay to follow master synchronisation source */
1049     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1050          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1051         /* if video is slave, we try to correct big delays by
1052            duplicating or deleting a frame */
1053         diff = get_video_clock(is) - get_master_clock(is);
1054
1055         /* skip or repeat frame. We take into account the
1056            delay to compute the threshold. I still don't know
1057            if it is the best guess */
1058         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1059         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1060             if (diff <= -sync_threshold)
1061                 delay = 0;
1062             else if (diff >= sync_threshold)
1063                 delay = 2 * delay;
1064         }
1065     }
1066     is->frame_timer += delay;
1067
1068     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1069             delay, frame_current_pts, -diff);
1070
1071     return is->frame_timer;
1072 }
1073
1074 /* called to display each frame */
1075 static void video_refresh_timer(void *opaque)
1076 {
1077     VideoState *is = opaque;
1078     VideoPicture *vp;
1079
1080     SubPicture *sp, *sp2;
1081
1082     if (is->video_st) {
1083 retry:
1084         if (is->pictq_size == 0) {
1085             // nothing to do, no picture to display in the que
1086         } else {
1087             double time = av_gettime_relative() / 1000000.0;
1088             double next_target;
1089             /* dequeue the picture */
1090             vp = &is->pictq[is->pictq_rindex];
1091
1092             if (time < vp->target_clock)
1093                 return;
1094             /* update current video pts */
1095             is->video_current_pts = vp->pts;
1096             is->video_current_pts_drift = is->video_current_pts - time;
1097             is->video_current_pos = vp->pos;
1098             if (is->pictq_size > 1) {
1099                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1100                 assert(nextvp->target_clock >= vp->target_clock);
1101                 next_target= nextvp->target_clock;
1102             } else {
1103                 next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
1104             }
1105             if (framedrop && time > next_target) {
1106                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1107                 if (is->pictq_size > 1 || time > next_target + 0.5) {
1108                     /* update queue size and signal for next picture */
1109                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1110                         is->pictq_rindex = 0;
1111
1112                     SDL_LockMutex(is->pictq_mutex);
1113                     is->pictq_size--;
1114                     SDL_CondSignal(is->pictq_cond);
1115                     SDL_UnlockMutex(is->pictq_mutex);
1116                     goto retry;
1117                 }
1118             }
1119
1120             if (is->subtitle_st) {
1121                 if (is->subtitle_stream_changed) {
1122                     SDL_LockMutex(is->subpq_mutex);
1123
1124                     while (is->subpq_size) {
1125                         free_subpicture(&is->subpq[is->subpq_rindex]);
1126
1127                         /* update queue size and signal for next picture */
1128                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1129                             is->subpq_rindex = 0;
1130
1131                         is->subpq_size--;
1132                     }
1133                     is->subtitle_stream_changed = 0;
1134
1135                     SDL_CondSignal(is->subpq_cond);
1136                     SDL_UnlockMutex(is->subpq_mutex);
1137                 } else {
1138                     if (is->subpq_size > 0) {
1139                         sp = &is->subpq[is->subpq_rindex];
1140
1141                         if (is->subpq_size > 1)
1142                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1143                         else
1144                             sp2 = NULL;
1145
1146                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1147                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1148                         {
1149                             free_subpicture(sp);
1150
1151                             /* update queue size and signal for next picture */
1152                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1153                                 is->subpq_rindex = 0;
1154
1155                             SDL_LockMutex(is->subpq_mutex);
1156                             is->subpq_size--;
1157                             SDL_CondSignal(is->subpq_cond);
1158                             SDL_UnlockMutex(is->subpq_mutex);
1159                         }
1160                     }
1161                 }
1162             }
1163
1164             /* display picture */
1165             if (!display_disable)
1166                 video_display(is);
1167
1168             /* update queue size and signal for next picture */
1169             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1170                 is->pictq_rindex = 0;
1171
1172             SDL_LockMutex(is->pictq_mutex);
1173             is->pictq_size--;
1174             SDL_CondSignal(is->pictq_cond);
1175             SDL_UnlockMutex(is->pictq_mutex);
1176         }
1177     } else if (is->audio_st) {
1178         /* draw the next audio frame */
1179
1180         /* if only audio stream, then display the audio bars (better
1181            than nothing, just to test the implementation */
1182
1183         /* display picture */
1184         if (!display_disable)
1185             video_display(is);
1186     }
1187     if (show_status) {
1188         static int64_t last_time;
1189         int64_t cur_time;
1190         int aqsize, vqsize, sqsize;
1191         double av_diff;
1192
1193         cur_time = av_gettime_relative();
1194         if (!last_time || (cur_time - last_time) >= 30000) {
1195             aqsize = 0;
1196             vqsize = 0;
1197             sqsize = 0;
1198             if (is->audio_st)
1199                 aqsize = is->audioq.size;
1200             if (is->video_st)
1201                 vqsize = is->videoq.size;
1202             if (is->subtitle_st)
1203                 sqsize = is->subtitleq.size;
1204             av_diff = 0;
1205             if (is->audio_st && is->video_st)
1206                 av_diff = get_audio_clock(is) - get_video_clock(is);
1207             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1208                    get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
1209                    vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1210             fflush(stdout);
1211             last_time = cur_time;
1212         }
1213     }
1214 }
1215
1216 static void stream_close(VideoState *is)
1217 {
1218     VideoPicture *vp;
1219     int i;
1220     /* XXX: use a special url_shutdown call to abort parse cleanly */
1221     is->abort_request = 1;
1222     SDL_WaitThread(is->parse_tid, NULL);
1223     SDL_WaitThread(is->refresh_tid, NULL);
1224
1225     /* free all pictures */
1226     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1227         vp = &is->pictq[i];
1228         if (vp->bmp) {
1229             SDL_FreeYUVOverlay(vp->bmp);
1230             vp->bmp = NULL;
1231         }
1232     }
1233     SDL_DestroyMutex(is->pictq_mutex);
1234     SDL_DestroyCond(is->pictq_cond);
1235     SDL_DestroyMutex(is->subpq_mutex);
1236     SDL_DestroyCond(is->subpq_cond);
1237 #if !CONFIG_AVFILTER
1238     if (is->img_convert_ctx)
1239         sws_freeContext(is->img_convert_ctx);
1240 #endif
1241     av_free(is);
1242 }
1243
1244 static void do_exit(void)
1245 {
1246     if (cur_stream) {
1247         stream_close(cur_stream);
1248         cur_stream = NULL;
1249     }
1250     uninit_opts();
1251     avformat_network_deinit();
1252     if (show_status)
1253         printf("\n");
1254     SDL_Quit();
1255     av_log(NULL, AV_LOG_QUIET, "");
1256     exit(0);
1257 }
1258
1259 /* allocate a picture (needs to do that in main thread to avoid
1260    potential locking problems */
1261 static void alloc_picture(void *opaque)
1262 {
1263     VideoState *is = opaque;
1264     VideoPicture *vp;
1265
1266     vp = &is->pictq[is->pictq_windex];
1267
1268     if (vp->bmp)
1269         SDL_FreeYUVOverlay(vp->bmp);
1270
1271 #if CONFIG_AVFILTER
1272     vp->width   = is->out_video_filter->inputs[0]->w;
1273     vp->height  = is->out_video_filter->inputs[0]->h;
1274     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1275 #else
1276     vp->width   = is->video_st->codec->width;
1277     vp->height  = is->video_st->codec->height;
1278     vp->pix_fmt = is->video_st->codec->pix_fmt;
1279 #endif
1280
1281     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1282                                    SDL_YV12_OVERLAY,
1283                                    screen);
1284     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1285         /* SDL allocates a buffer smaller than requested if the video
1286          * overlay hardware is unable to support the requested size. */
1287         fprintf(stderr, "Error: the video system does not support an image\n"
1288                         "size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
1289                         "to reduce the image size.\n", vp->width, vp->height );
1290         do_exit();
1291     }
1292
1293     SDL_LockMutex(is->pictq_mutex);
1294     vp->allocated = 1;
1295     SDL_CondSignal(is->pictq_cond);
1296     SDL_UnlockMutex(is->pictq_mutex);
1297 }
1298
1299 /* The 'pts' parameter is the dts of the packet / pts of the frame and
1300  * guessed if not known. */
1301 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1302 {
1303     VideoPicture *vp;
1304 #if CONFIG_AVFILTER
1305     AVPicture pict_src;
1306 #else
1307     int dst_pix_fmt = AV_PIX_FMT_YUV420P;
1308 #endif
1309     /* wait until we have space to put a new picture */
1310     SDL_LockMutex(is->pictq_mutex);
1311
1312     if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1313         is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1314
1315     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1316            !is->videoq.abort_request) {
1317         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1318     }
1319     SDL_UnlockMutex(is->pictq_mutex);
1320
1321     if (is->videoq.abort_request)
1322         return -1;
1323
1324     vp = &is->pictq[is->pictq_windex];
1325
1326     vp->sar = src_frame->sample_aspect_ratio;
1327
1328     /* alloc or resize hardware picture buffer */
1329     if (!vp->bmp || vp->reallocate ||
1330 #if CONFIG_AVFILTER
1331         vp->width  != is->out_video_filter->inputs[0]->w ||
1332         vp->height != is->out_video_filter->inputs[0]->h) {
1333 #else
1334         vp->width != is->video_st->codec->width ||
1335         vp->height != is->video_st->codec->height) {
1336 #endif
1337         SDL_Event event;
1338
1339         vp->allocated  = 0;
1340         vp->reallocate = 0;
1341
1342         /* the allocation must be done in the main thread to avoid
1343            locking problems */
1344         event.type = FF_ALLOC_EVENT;
1345         event.user.data1 = is;
1346         SDL_PushEvent(&event);
1347
1348         /* wait until the picture is allocated */
1349         SDL_LockMutex(is->pictq_mutex);
1350         while (!vp->allocated && !is->videoq.abort_request) {
1351             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1352         }
1353         SDL_UnlockMutex(is->pictq_mutex);
1354
1355         if (is->videoq.abort_request)
1356             return -1;
1357     }
1358
1359     /* if the frame is not skipped, then display it */
1360     if (vp->bmp) {
1361         AVPicture pict = { { 0 } };
1362
1363         /* get a pointer on the bitmap */
1364         SDL_LockYUVOverlay (vp->bmp);
1365
1366         pict.data[0] = vp->bmp->pixels[0];
1367         pict.data[1] = vp->bmp->pixels[2];
1368         pict.data[2] = vp->bmp->pixels[1];
1369
1370         pict.linesize[0] = vp->bmp->pitches[0];
1371         pict.linesize[1] = vp->bmp->pitches[2];
1372         pict.linesize[2] = vp->bmp->pitches[1];
1373
1374 #if CONFIG_AVFILTER
1375         pict_src.data[0] = src_frame->data[0];
1376         pict_src.data[1] = src_frame->data[1];
1377         pict_src.data[2] = src_frame->data[2];
1378
1379         pict_src.linesize[0] = src_frame->linesize[0];
1380         pict_src.linesize[1] = src_frame->linesize[1];
1381         pict_src.linesize[2] = src_frame->linesize[2];
1382
1383         // FIXME use direct rendering
1384         av_picture_copy(&pict, &pict_src,
1385                         vp->pix_fmt, vp->width, vp->height);
1386 #else
1387         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1388         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1389             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1390             dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1391         if (!is->img_convert_ctx) {
1392             fprintf(stderr, "Cannot initialize the conversion context\n");
1393             exit(1);
1394         }
1395         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1396                   0, vp->height, pict.data, pict.linesize);
1397 #endif
1398         /* update the bitmap content */
1399         SDL_UnlockYUVOverlay(vp->bmp);
1400
1401         vp->pts = pts;
1402         vp->pos = pos;
1403
1404         /* now we can update the picture count */
1405         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1406             is->pictq_windex = 0;
1407         SDL_LockMutex(is->pictq_mutex);
1408         vp->target_clock = compute_target_time(vp->pts, is);
1409
1410         is->pictq_size++;
1411         SDL_UnlockMutex(is->pictq_mutex);
1412     }
1413     return 0;
1414 }
1415
1416 /* Compute the exact PTS for the picture if it is omitted in the stream.
1417  * The 'pts1' parameter is the dts of the packet / pts of the frame. */
1418 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1419 {
1420     double frame_delay, pts;
1421     int ret;
1422
1423     pts = pts1;
1424
1425     if (pts != 0) {
1426         /* update video clock with pts, if present */
1427         is->video_clock = pts;
1428     } else {
1429         pts = is->video_clock;
1430     }
1431     /* update video clock for next frame */
1432     frame_delay = av_q2d(is->video_st->codec->time_base);
1433     /* for MPEG2, the frame can be repeated, so we update the
1434        clock accordingly */
1435     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1436     is->video_clock += frame_delay;
1437
1438     ret = queue_picture(is, src_frame, pts, pos);
1439     av_frame_unref(src_frame);
1440     return ret;
1441 }
1442
1443 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1444 {
1445     int got_picture, i;
1446
1447     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1448         return -1;
1449
1450     if (pkt->data == flush_pkt.data) {
1451         avcodec_flush_buffers(is->video_st->codec);
1452
1453         SDL_LockMutex(is->pictq_mutex);
1454         // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1455         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1456             is->pictq[i].target_clock= 0;
1457         }
1458         while (is->pictq_size && !is->videoq.abort_request) {
1459             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1460         }
1461         is->video_current_pos = -1;
1462         SDL_UnlockMutex(is->pictq_mutex);
1463
1464         init_pts_correction(&is->pts_ctx);
1465         is->frame_last_pts = AV_NOPTS_VALUE;
1466         is->frame_last_delay = 0;
1467         is->frame_timer = (double)av_gettime_relative() / 1000000.0;
1468         is->skip_frames = 1;
1469         is->skip_frames_index = 0;
1470         return 0;
1471     }
1472
1473     avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1474
1475     if (got_picture) {
1476         if (decoder_reorder_pts == -1) {
1477             *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1478         } else if (decoder_reorder_pts) {
1479             *pts = frame->pkt_pts;
1480         } else {
1481             *pts = frame->pkt_dts;
1482         }
1483
1484         if (*pts == AV_NOPTS_VALUE) {
1485             *pts = 0;
1486         }
1487         if (is->video_st->sample_aspect_ratio.num) {
1488             frame->sample_aspect_ratio = is->video_st->sample_aspect_ratio;
1489         }
1490
1491         is->skip_frames_index += 1;
1492         if (is->skip_frames_index >= is->skip_frames) {
1493             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1494             return 1;
1495         }
1496         av_frame_unref(frame);
1497     }
1498     return 0;
1499 }
1500
1501 #if CONFIG_AVFILTER
1502 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1503 {
1504     char sws_flags_str[128];
1505     char buffersrc_args[256];
1506     int ret;
1507     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1508     AVCodecContext *codec = is->video_st->codec;
1509
1510     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1511     graph->scale_sws_opts = av_strdup(sws_flags_str);
1512
1513     snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1514              codec->width, codec->height, codec->pix_fmt,
1515              is->video_st->time_base.num, is->video_st->time_base.den,
1516              codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1517
1518
1519     if ((ret = avfilter_graph_create_filter(&filt_src,
1520                                             avfilter_get_by_name("buffer"),
1521                                             "src", buffersrc_args, NULL,
1522                                             graph)) < 0)
1523         return ret;
1524     if ((ret = avfilter_graph_create_filter(&filt_out,
1525                                             avfilter_get_by_name("buffersink"),
1526                                             "out", NULL, NULL, graph)) < 0)
1527         return ret;
1528
1529     if ((ret = avfilter_graph_create_filter(&filt_format,
1530                                             avfilter_get_by_name("format"),
1531                                             "format", "yuv420p", NULL, graph)) < 0)
1532         return ret;
1533     if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1534         return ret;
1535
1536
1537     if (vfilters) {
1538         AVFilterInOut *outputs = avfilter_inout_alloc();
1539         AVFilterInOut *inputs  = avfilter_inout_alloc();
1540
1541         outputs->name    = av_strdup("in");
1542         outputs->filter_ctx = filt_src;
1543         outputs->pad_idx = 0;
1544         outputs->next    = NULL;
1545
1546         inputs->name    = av_strdup("out");
1547         inputs->filter_ctx = filt_format;
1548         inputs->pad_idx = 0;
1549         inputs->next    = NULL;
1550
1551         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1552             return ret;
1553     } else {
1554         if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1555             return ret;
1556     }
1557
1558     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1559         return ret;
1560
1561     is->in_video_filter  = filt_src;
1562     is->out_video_filter = filt_out;
1563
1564     return ret;
1565 }
1566
1567 #endif  /* CONFIG_AVFILTER */
1568
1569 static int video_thread(void *arg)
1570 {
1571     AVPacket pkt = { 0 };
1572     VideoState *is = arg;
1573     AVFrame *frame = av_frame_alloc();
1574     int64_t pts_int;
1575     double pts;
1576     int ret;
1577
1578 #if CONFIG_AVFILTER
1579     AVFilterGraph *graph = avfilter_graph_alloc();
1580     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1581     int last_w = is->video_st->codec->width;
1582     int last_h = is->video_st->codec->height;
1583     if (!graph) {
1584         av_frame_free(&frame);
1585         return AVERROR(ENOMEM);
1586     }
1587
1588     if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1589         goto the_end;
1590     filt_in  = is->in_video_filter;
1591     filt_out = is->out_video_filter;
1592 #endif
1593
1594     if (!frame) {
1595 #if CONFIG_AVFILTER
1596         avfilter_graph_free(&graph);
1597 #endif
1598         return AVERROR(ENOMEM);
1599     }
1600
1601     for (;;) {
1602 #if CONFIG_AVFILTER
1603         AVRational tb;
1604 #endif
1605         while (is->paused && !is->videoq.abort_request)
1606             SDL_Delay(10);
1607
1608         av_free_packet(&pkt);
1609
1610         ret = get_video_frame(is, frame, &pts_int, &pkt);
1611         if (ret < 0)
1612             goto the_end;
1613
1614         if (!ret)
1615             continue;
1616
1617 #if CONFIG_AVFILTER
1618         if (   last_w != is->video_st->codec->width
1619             || last_h != is->video_st->codec->height) {
1620             av_log(NULL, AV_LOG_TRACE, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1621                     is->video_st->codec->width, is->video_st->codec->height);
1622             avfilter_graph_free(&graph);
1623             graph = avfilter_graph_alloc();
1624             if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1625                 goto the_end;
1626             filt_in  = is->in_video_filter;
1627             filt_out = is->out_video_filter;
1628             last_w = is->video_st->codec->width;
1629             last_h = is->video_st->codec->height;
1630         }
1631
1632         frame->pts = pts_int;
1633         ret = av_buffersrc_add_frame(filt_in, frame);
1634         if (ret < 0)
1635             goto the_end;
1636
1637         while (ret >= 0) {
1638             ret = av_buffersink_get_frame(filt_out, frame);
1639             if (ret < 0) {
1640                 ret = 0;
1641                 break;
1642             }
1643
1644             pts_int = frame->pts;
1645             tb      = filt_out->inputs[0]->time_base;
1646             if (av_cmp_q(tb, is->video_st->time_base)) {
1647                 av_unused int64_t pts1 = pts_int;
1648                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1649                 av_log(NULL, AV_LOG_TRACE, "video_thread(): "
1650                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1651                         tb.num, tb.den, pts1,
1652                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1653             }
1654             pts = pts_int * av_q2d(is->video_st->time_base);
1655             ret = output_picture2(is, frame, pts, 0);
1656         }
1657 #else
1658         pts = pts_int * av_q2d(is->video_st->time_base);
1659         ret = output_picture2(is, frame, pts,  pkt.pos);
1660 #endif
1661
1662         if (ret < 0)
1663             goto the_end;
1664
1665
1666         if (step)
1667             if (cur_stream)
1668                 stream_pause(cur_stream);
1669     }
1670  the_end:
1671 #if CONFIG_AVFILTER
1672     av_freep(&vfilters);
1673     avfilter_graph_free(&graph);
1674 #endif
1675     av_free_packet(&pkt);
1676     av_frame_free(&frame);
1677     return 0;
1678 }
1679
1680 static int subtitle_thread(void *arg)
1681 {
1682     VideoState *is = arg;
1683     SubPicture *sp;
1684     AVPacket pkt1, *pkt = &pkt1;
1685     int got_subtitle;
1686     double pts;
1687     int i, j;
1688     int r, g, b, y, u, v, a;
1689
1690     for (;;) {
1691         while (is->paused && !is->subtitleq.abort_request) {
1692             SDL_Delay(10);
1693         }
1694         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1695             break;
1696
1697         if (pkt->data == flush_pkt.data) {
1698             avcodec_flush_buffers(is->subtitle_st->codec);
1699             continue;
1700         }
1701         SDL_LockMutex(is->subpq_mutex);
1702         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1703                !is->subtitleq.abort_request) {
1704             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1705         }
1706         SDL_UnlockMutex(is->subpq_mutex);
1707
1708         if (is->subtitleq.abort_request)
1709             return 0;
1710
1711         sp = &is->subpq[is->subpq_windex];
1712
1713        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1714            this packet, if any */
1715         pts = 0;
1716         if (pkt->pts != AV_NOPTS_VALUE)
1717             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1718
1719         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1720                                  &got_subtitle, pkt);
1721
1722         if (got_subtitle && sp->sub.format == 0) {
1723             sp->pts = pts;
1724
1725             for (i = 0; i < sp->sub.num_rects; i++)
1726             {
1727                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1728                 {
1729                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1730                     y = RGB_TO_Y_CCIR(r, g, b);
1731                     u = RGB_TO_U_CCIR(r, g, b, 0);
1732                     v = RGB_TO_V_CCIR(r, g, b, 0);
1733                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1734                 }
1735             }
1736
1737             /* now we can update the picture count */
1738             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1739                 is->subpq_windex = 0;
1740             SDL_LockMutex(is->subpq_mutex);
1741             is->subpq_size++;
1742             SDL_UnlockMutex(is->subpq_mutex);
1743         }
1744         av_free_packet(pkt);
1745     }
1746     return 0;
1747 }
1748
1749 /* copy samples for viewing in editor window */
1750 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1751 {
1752     int size, len;
1753
1754     size = samples_size / sizeof(short);
1755     while (size > 0) {
1756         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1757         if (len > size)
1758             len = size;
1759         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1760         samples += len;
1761         is->sample_array_index += len;
1762         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1763             is->sample_array_index = 0;
1764         size -= len;
1765     }
1766 }
1767
1768 /* return the new audio buffer size (samples can be added or deleted
1769    to get better sync if video or external master clock) */
1770 static int synchronize_audio(VideoState *is, short *samples,
1771                              int samples_size1, double pts)
1772 {
1773     int n, samples_size;
1774     double ref_clock;
1775
1776     n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1777     samples_size = samples_size1;
1778
1779     /* if not master, then we try to remove or add samples to correct the clock */
1780     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1781          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1782         double diff, avg_diff;
1783         int wanted_size, min_size, max_size, nb_samples;
1784
1785         ref_clock = get_master_clock(is);
1786         diff = get_audio_clock(is) - ref_clock;
1787
1788         if (diff < AV_NOSYNC_THRESHOLD) {
1789             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1790             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1791                 /* not enough measures to have a correct estimate */
1792                 is->audio_diff_avg_count++;
1793             } else {
1794                 /* estimate the A-V difference */
1795                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1796
1797                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1798                     wanted_size = samples_size + ((int)(diff * is->sdl_sample_rate) * n);
1799                     nb_samples = samples_size / n;
1800
1801                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1802                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1803                     if (wanted_size < min_size)
1804                         wanted_size = min_size;
1805                     else if (wanted_size > max_size)
1806                         wanted_size = max_size;
1807
1808                     /* add or remove samples to correction the synchro */
1809                     if (wanted_size < samples_size) {
1810                         /* remove samples */
1811                         samples_size = wanted_size;
1812                     } else if (wanted_size > samples_size) {
1813                         uint8_t *samples_end, *q;
1814                         int nb;
1815
1816                         /* add samples */
1817                         nb = (samples_size - wanted_size);
1818                         samples_end = (uint8_t *)samples + samples_size - n;
1819                         q = samples_end + n;
1820                         while (nb > 0) {
1821                             memcpy(q, samples_end, n);
1822                             q += n;
1823                             nb -= n;
1824                         }
1825                         samples_size = wanted_size;
1826                     }
1827                 }
1828                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1829                         diff, avg_diff, samples_size - samples_size1,
1830                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1831             }
1832         } else {
1833             /* too big difference : may be initial PTS errors, so
1834                reset A-V filter */
1835             is->audio_diff_avg_count = 0;
1836             is->audio_diff_cum       = 0;
1837         }
1838     }
1839
1840     return samples_size;
1841 }
1842
1843 /* decode one audio frame and returns its uncompressed size */
1844 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1845 {
1846     AVPacket *pkt_temp = &is->audio_pkt_temp;
1847     AVPacket *pkt = &is->audio_pkt;
1848     AVCodecContext *dec = is->audio_st->codec;
1849     int n, len1, data_size, got_frame;
1850     double pts;
1851     int new_packet = 0;
1852     int flush_complete = 0;
1853
1854     for (;;) {
1855         /* NOTE: the audio packet can contain several frames */
1856         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1857             int resample_changed, audio_resample;
1858
1859             if (!is->frame) {
1860                 if (!(is->frame = av_frame_alloc()))
1861                     return AVERROR(ENOMEM);
1862             }
1863
1864             if (flush_complete)
1865                 break;
1866             new_packet = 0;
1867             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1868             if (len1 < 0) {
1869                 /* if error, we skip the frame */
1870                 pkt_temp->size = 0;
1871                 break;
1872             }
1873
1874             pkt_temp->data += len1;
1875             pkt_temp->size -= len1;
1876
1877             if (!got_frame) {
1878                 /* stop sending empty packets if the decoder is finished */
1879                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1880                     flush_complete = 1;
1881                 continue;
1882             }
1883             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1884                                                    is->frame->nb_samples,
1885                                                    is->frame->format, 1);
1886
1887             audio_resample = is->frame->format         != is->sdl_sample_fmt     ||
1888                              is->frame->channel_layout != is->sdl_channel_layout ||
1889                              is->frame->sample_rate    != is->sdl_sample_rate;
1890
1891             resample_changed = is->frame->format         != is->resample_sample_fmt     ||
1892                                is->frame->channel_layout != is->resample_channel_layout ||
1893                                is->frame->sample_rate    != is->resample_sample_rate;
1894
1895             if ((!is->avr && audio_resample) || resample_changed) {
1896                 int ret;
1897                 if (is->avr)
1898                     avresample_close(is->avr);
1899                 else if (audio_resample) {
1900                     is->avr = avresample_alloc_context();
1901                     if (!is->avr) {
1902                         fprintf(stderr, "error allocating AVAudioResampleContext\n");
1903                         break;
1904                     }
1905                 }
1906                 if (audio_resample) {
1907                     av_opt_set_int(is->avr, "in_channel_layout",  is->frame->channel_layout, 0);
1908                     av_opt_set_int(is->avr, "in_sample_fmt",      is->frame->format,         0);
1909                     av_opt_set_int(is->avr, "in_sample_rate",     is->frame->sample_rate,    0);
1910                     av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout,    0);
1911                     av_opt_set_int(is->avr, "out_sample_fmt",     is->sdl_sample_fmt,        0);
1912                     av_opt_set_int(is->avr, "out_sample_rate",    is->sdl_sample_rate,       0);
1913
1914                     if ((ret = avresample_open(is->avr)) < 0) {
1915                         fprintf(stderr, "error initializing libavresample\n");
1916                         break;
1917                     }
1918                 }
1919                 is->resample_sample_fmt     = is->frame->format;
1920                 is->resample_channel_layout = is->frame->channel_layout;
1921                 is->resample_sample_rate    = is->frame->sample_rate;
1922             }
1923
1924             if (audio_resample) {
1925                 void *tmp_out;
1926                 int out_samples, out_size, out_linesize;
1927                 int osize      = av_get_bytes_per_sample(is->sdl_sample_fmt);
1928                 int nb_samples = is->frame->nb_samples;
1929
1930                 out_size = av_samples_get_buffer_size(&out_linesize,
1931                                                       is->sdl_channels,
1932                                                       nb_samples,
1933                                                       is->sdl_sample_fmt, 0);
1934                 tmp_out = av_realloc(is->audio_buf1, out_size);
1935                 if (!tmp_out)
1936                     return AVERROR(ENOMEM);
1937                 is->audio_buf1 = tmp_out;
1938
1939                 out_samples = avresample_convert(is->avr,
1940                                                  &is->audio_buf1,
1941                                                  out_linesize, nb_samples,
1942                                                  is->frame->data,
1943                                                  is->frame->linesize[0],
1944                                                  is->frame->nb_samples);
1945                 if (out_samples < 0) {
1946                     fprintf(stderr, "avresample_convert() failed\n");
1947                     break;
1948                 }
1949                 is->audio_buf = is->audio_buf1;
1950                 data_size = out_samples * osize * is->sdl_channels;
1951             } else {
1952                 is->audio_buf = is->frame->data[0];
1953             }
1954
1955             /* if no pts, then compute it */
1956             pts = is->audio_clock;
1957             *pts_ptr = pts;
1958             n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1959             is->audio_clock += (double)data_size /
1960                 (double)(n * is->sdl_sample_rate);
1961 #ifdef DEBUG
1962             {
1963                 static double last_clock;
1964                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1965                        is->audio_clock - last_clock,
1966                        is->audio_clock, pts);
1967                 last_clock = is->audio_clock;
1968             }
1969 #endif
1970             return data_size;
1971         }
1972
1973         /* free the current packet */
1974         if (pkt->data)
1975             av_free_packet(pkt);
1976         memset(pkt_temp, 0, sizeof(*pkt_temp));
1977
1978         if (is->paused || is->audioq.abort_request) {
1979             return -1;
1980         }
1981
1982         /* read next packet */
1983         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
1984             return -1;
1985
1986         if (pkt->data == flush_pkt.data) {
1987             avcodec_flush_buffers(dec);
1988             flush_complete = 0;
1989         }
1990
1991         *pkt_temp = *pkt;
1992
1993         /* if update the audio clock with the pts */
1994         if (pkt->pts != AV_NOPTS_VALUE) {
1995             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1996         }
1997     }
1998 }
1999
2000 /* prepare a new audio buffer */
2001 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2002 {
2003     VideoState *is = opaque;
2004     int audio_size, len1;
2005     double pts;
2006
2007     audio_callback_time = av_gettime_relative();
2008
2009     while (len > 0) {
2010         if (is->audio_buf_index >= is->audio_buf_size) {
2011            audio_size = audio_decode_frame(is, &pts);
2012            if (audio_size < 0) {
2013                 /* if error, just output silence */
2014                is->audio_buf      = is->silence_buf;
2015                is->audio_buf_size = sizeof(is->silence_buf);
2016            } else {
2017                if (is->show_audio)
2018                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2019                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2020                                               pts);
2021                is->audio_buf_size = audio_size;
2022            }
2023            is->audio_buf_index = 0;
2024         }
2025         len1 = is->audio_buf_size - is->audio_buf_index;
2026         if (len1 > len)
2027             len1 = len;
2028         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2029         len -= len1;
2030         stream += len1;
2031         is->audio_buf_index += len1;
2032     }
2033 }
2034
2035 /* open a given stream. Return 0 if OK */
2036 static int stream_component_open(VideoState *is, int stream_index)
2037 {
2038     AVFormatContext *ic = is->ic;
2039     AVCodecContext *avctx;
2040     AVCodec *codec;
2041     SDL_AudioSpec wanted_spec, spec;
2042     AVDictionary *opts;
2043     AVDictionaryEntry *t = NULL;
2044     int ret = 0;
2045
2046     if (stream_index < 0 || stream_index >= ic->nb_streams)
2047         return -1;
2048     avctx = ic->streams[stream_index]->codec;
2049
2050     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
2051
2052     codec = avcodec_find_decoder(avctx->codec_id);
2053     avctx->workaround_bugs   = workaround_bugs;
2054     avctx->idct_algo         = idct;
2055     avctx->skip_frame        = skip_frame;
2056     avctx->skip_idct         = skip_idct;
2057     avctx->skip_loop_filter  = skip_loop_filter;
2058     avctx->error_concealment = error_concealment;
2059
2060     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2061
2062     if (!av_dict_get(opts, "threads", NULL, 0))
2063         av_dict_set(&opts, "threads", "auto", 0);
2064     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
2065         av_dict_set(&opts, "refcounted_frames", "1", 0);
2066     if (!codec ||
2067         (ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2068         goto fail;
2069     }
2070     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2071         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2072         ret =  AVERROR_OPTION_NOT_FOUND;
2073         goto fail;
2074     }
2075
2076     /* prepare audio output */
2077     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2078         is->sdl_sample_rate = avctx->sample_rate;
2079
2080         if (!avctx->channel_layout)
2081             avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
2082         if (!avctx->channel_layout) {
2083             fprintf(stderr, "unable to guess channel layout\n");
2084             ret = AVERROR_INVALIDDATA;
2085             goto fail;
2086         }
2087         if (avctx->channels == 1)
2088             is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
2089         else
2090             is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
2091         is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
2092
2093         wanted_spec.format = AUDIO_S16SYS;
2094         wanted_spec.freq = is->sdl_sample_rate;
2095         wanted_spec.channels = is->sdl_channels;
2096         wanted_spec.silence = 0;
2097         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2098         wanted_spec.callback = sdl_audio_callback;
2099         wanted_spec.userdata = is;
2100         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2101             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2102             ret = AVERROR_UNKNOWN;
2103             goto fail;
2104         }
2105         is->audio_hw_buf_size = spec.size;
2106         is->sdl_sample_fmt          = AV_SAMPLE_FMT_S16;
2107         is->resample_sample_fmt     = is->sdl_sample_fmt;
2108         is->resample_channel_layout = avctx->channel_layout;
2109         is->resample_sample_rate    = avctx->sample_rate;
2110     }
2111
2112     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2113     switch (avctx->codec_type) {
2114     case AVMEDIA_TYPE_AUDIO:
2115         is->audio_stream = stream_index;
2116         is->audio_st = ic->streams[stream_index];
2117         is->audio_buf_size  = 0;
2118         is->audio_buf_index = 0;
2119
2120         /* init averaging filter */
2121         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2122         is->audio_diff_avg_count = 0;
2123         /* since we do not have a precise anough audio fifo fullness,
2124            we correct audio sync only if larger than this threshold */
2125         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2126
2127         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2128         packet_queue_init(&is->audioq);
2129         SDL_PauseAudio(0);
2130         break;
2131     case AVMEDIA_TYPE_VIDEO:
2132         is->video_stream = stream_index;
2133         is->video_st = ic->streams[stream_index];
2134
2135         packet_queue_init(&is->videoq);
2136         is->video_tid = SDL_CreateThread(video_thread, is);
2137         break;
2138     case AVMEDIA_TYPE_SUBTITLE:
2139         is->subtitle_stream = stream_index;
2140         is->subtitle_st = ic->streams[stream_index];
2141         packet_queue_init(&is->subtitleq);
2142
2143         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2144         break;
2145     default:
2146         break;
2147     }
2148
2149 fail:
2150     av_dict_free(&opts);
2151
2152     return ret;
2153 }
2154
2155 static void stream_component_close(VideoState *is, int stream_index)
2156 {
2157     AVFormatContext *ic = is->ic;
2158     AVCodecContext *avctx;
2159
2160     if (stream_index < 0 || stream_index >= ic->nb_streams)
2161         return;
2162     avctx = ic->streams[stream_index]->codec;
2163
2164     switch (avctx->codec_type) {
2165     case AVMEDIA_TYPE_AUDIO:
2166         packet_queue_abort(&is->audioq);
2167
2168         SDL_CloseAudio();
2169
2170         packet_queue_end(&is->audioq);
2171         av_free_packet(&is->audio_pkt);
2172         if (is->avr)
2173             avresample_free(&is->avr);
2174         av_freep(&is->audio_buf1);
2175         is->audio_buf = NULL;
2176         av_frame_free(&is->frame);
2177
2178         if (is->rdft) {
2179             av_rdft_end(is->rdft);
2180             av_freep(&is->rdft_data);
2181             is->rdft = NULL;
2182             is->rdft_bits = 0;
2183         }
2184         break;
2185     case AVMEDIA_TYPE_VIDEO:
2186         packet_queue_abort(&is->videoq);
2187
2188         /* note: we also signal this mutex to make sure we deblock the
2189            video thread in all cases */
2190         SDL_LockMutex(is->pictq_mutex);
2191         SDL_CondSignal(is->pictq_cond);
2192         SDL_UnlockMutex(is->pictq_mutex);
2193
2194         SDL_WaitThread(is->video_tid, NULL);
2195
2196         packet_queue_end(&is->videoq);
2197         break;
2198     case AVMEDIA_TYPE_SUBTITLE:
2199         packet_queue_abort(&is->subtitleq);
2200
2201         /* note: we also signal this mutex to make sure we deblock the
2202            video thread in all cases */
2203         SDL_LockMutex(is->subpq_mutex);
2204         is->subtitle_stream_changed = 1;
2205
2206         SDL_CondSignal(is->subpq_cond);
2207         SDL_UnlockMutex(is->subpq_mutex);
2208
2209         SDL_WaitThread(is->subtitle_tid, NULL);
2210
2211         packet_queue_end(&is->subtitleq);
2212         break;
2213     default:
2214         break;
2215     }
2216
2217     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2218     avcodec_close(avctx);
2219     switch (avctx->codec_type) {
2220     case AVMEDIA_TYPE_AUDIO:
2221         is->audio_st = NULL;
2222         is->audio_stream = -1;
2223         break;
2224     case AVMEDIA_TYPE_VIDEO:
2225         is->video_st = NULL;
2226         is->video_stream = -1;
2227         break;
2228     case AVMEDIA_TYPE_SUBTITLE:
2229         is->subtitle_st = NULL;
2230         is->subtitle_stream = -1;
2231         break;
2232     default:
2233         break;
2234     }
2235 }
2236
2237 /* since we have only one decoding thread, we can use a global
2238    variable instead of a thread local variable */
2239 static VideoState *global_video_state;
2240
2241 static int decode_interrupt_cb(void *ctx)
2242 {
2243     return global_video_state && global_video_state->abort_request;
2244 }
2245
2246 /* this thread gets the stream from the disk or the network */
2247 static int decode_thread(void *arg)
2248 {
2249     VideoState *is = arg;
2250     AVFormatContext *ic = NULL;
2251     int err, i, ret;
2252     int st_index[AVMEDIA_TYPE_NB];
2253     AVPacket pkt1, *pkt = &pkt1;
2254     int eof = 0;
2255     int pkt_in_play_range = 0;
2256     AVDictionaryEntry *t;
2257     AVDictionary **opts;
2258     int orig_nb_streams;
2259
2260     memset(st_index, -1, sizeof(st_index));
2261     is->video_stream = -1;
2262     is->audio_stream = -1;
2263     is->subtitle_stream = -1;
2264
2265     global_video_state = is;
2266
2267     ic = avformat_alloc_context();
2268     if (!ic) {
2269         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2270         ret = AVERROR(ENOMEM);
2271         goto fail;
2272     }
2273     ic->interrupt_callback.callback = decode_interrupt_cb;
2274     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2275     if (err < 0) {
2276         print_error(is->filename, err);
2277         ret = -1;
2278         goto fail;
2279     }
2280     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2281         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2282         ret = AVERROR_OPTION_NOT_FOUND;
2283         goto fail;
2284     }
2285     is->ic = ic;
2286
2287     if (genpts)
2288         ic->flags |= AVFMT_FLAG_GENPTS;
2289
2290     opts = setup_find_stream_info_opts(ic, codec_opts);
2291     orig_nb_streams = ic->nb_streams;
2292
2293     err = avformat_find_stream_info(ic, opts);
2294
2295     for (i = 0; i < orig_nb_streams; i++)
2296         av_dict_free(&opts[i]);
2297     av_freep(&opts);
2298
2299     if (err < 0) {
2300         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2301         ret = -1;
2302         goto fail;
2303     }
2304
2305     if (ic->pb)
2306         ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2307
2308     if (seek_by_bytes < 0)
2309         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2310
2311     /* if seeking requested, we execute it */
2312     if (start_time != AV_NOPTS_VALUE) {
2313         int64_t timestamp;
2314
2315         timestamp = start_time;
2316         /* add the stream start time */
2317         if (ic->start_time != AV_NOPTS_VALUE)
2318             timestamp += ic->start_time;
2319         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2320         if (ret < 0) {
2321             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2322                     is->filename, (double)timestamp / AV_TIME_BASE);
2323         }
2324     }
2325
2326     for (i = 0; i < ic->nb_streams; i++)
2327         ic->streams[i]->discard = AVDISCARD_ALL;
2328     if (!video_disable)
2329         st_index[AVMEDIA_TYPE_VIDEO] =
2330             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2331                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2332     if (!audio_disable)
2333         st_index[AVMEDIA_TYPE_AUDIO] =
2334             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2335                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2336                                 st_index[AVMEDIA_TYPE_VIDEO],
2337                                 NULL, 0);
2338     if (!video_disable)
2339         st_index[AVMEDIA_TYPE_SUBTITLE] =
2340             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2341                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2342                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2343                                  st_index[AVMEDIA_TYPE_AUDIO] :
2344                                  st_index[AVMEDIA_TYPE_VIDEO]),
2345                                 NULL, 0);
2346     if (show_status) {
2347         av_dump_format(ic, 0, is->filename, 0);
2348     }
2349
2350     /* open the streams */
2351     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2352         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2353     }
2354
2355     ret = -1;
2356     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2357         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2358     }
2359     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2360     if (ret < 0) {
2361         if (!display_disable)
2362             is->show_audio = 2;
2363     }
2364
2365     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2366         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2367     }
2368
2369     if (is->video_stream < 0 && is->audio_stream < 0) {
2370         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2371         ret = -1;
2372         goto fail;
2373     }
2374
2375     for (;;) {
2376         if (is->abort_request)
2377             break;
2378         if (is->paused != is->last_paused) {
2379             is->last_paused = is->paused;
2380             if (is->paused)
2381                 is->read_pause_return = av_read_pause(ic);
2382             else
2383                 av_read_play(ic);
2384         }
2385 #if CONFIG_RTSP_DEMUXER
2386         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2387             /* wait 10 ms to avoid trying to get another packet */
2388             /* XXX: horrible */
2389             SDL_Delay(10);
2390             continue;
2391         }
2392 #endif
2393         if (is->seek_req) {
2394             int64_t seek_target = is->seek_pos;
2395             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2396             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2397 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2398 //      of the seek_pos/seek_rel variables
2399
2400             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2401             if (ret < 0) {
2402                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2403             } else {
2404                 if (is->audio_stream >= 0) {
2405                     packet_queue_flush(&is->audioq);
2406                     packet_queue_put(&is->audioq, &flush_pkt);
2407                 }
2408                 if (is->subtitle_stream >= 0) {
2409                     packet_queue_flush(&is->subtitleq);
2410                     packet_queue_put(&is->subtitleq, &flush_pkt);
2411                 }
2412                 if (is->video_stream >= 0) {
2413                     packet_queue_flush(&is->videoq);
2414                     packet_queue_put(&is->videoq, &flush_pkt);
2415                 }
2416             }
2417             is->seek_req = 0;
2418             eof = 0;
2419         }
2420
2421         /* if the queue are full, no need to read more */
2422         if (!infinite_buffer &&
2423               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2424             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2425                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0)
2426                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
2427             /* wait 10 ms */
2428             SDL_Delay(10);
2429             continue;
2430         }
2431         if (eof) {
2432             if (is->video_stream >= 0) {
2433                 av_init_packet(pkt);
2434                 pkt->data = NULL;
2435                 pkt->size = 0;
2436                 pkt->stream_index = is->video_stream;
2437                 packet_queue_put(&is->videoq, pkt);
2438             }
2439             if (is->audio_stream >= 0 &&
2440                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2441                 av_init_packet(pkt);
2442                 pkt->data = NULL;
2443                 pkt->size = 0;
2444                 pkt->stream_index = is->audio_stream;
2445                 packet_queue_put(&is->audioq, pkt);
2446             }
2447             SDL_Delay(10);
2448             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2449                 if (loop != 1 && (!loop || --loop)) {
2450                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2451                 } else if (!noautoexit) {
2452                     ret = AVERROR_EOF;
2453                     goto fail;
2454                 }
2455             }
2456             continue;
2457         }
2458         ret = av_read_frame(ic, pkt);
2459         if (ret < 0) {
2460             if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2461                 eof = 1;
2462             if (ic->pb && ic->pb->error)
2463                 break;
2464             SDL_Delay(100); /* wait for user event */
2465             continue;
2466         }
2467         /* check if packet is in play range specified by user, then queue, otherwise discard */
2468         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2469                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2470                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2471                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2472                 <= ((double)duration / 1000000);
2473         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2474             packet_queue_put(&is->audioq, pkt);
2475         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2476             packet_queue_put(&is->videoq, pkt);
2477         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2478             packet_queue_put(&is->subtitleq, pkt);
2479         } else {
2480             av_free_packet(pkt);
2481         }
2482     }
2483     /* wait until the end */
2484     while (!is->abort_request) {
2485         SDL_Delay(100);
2486     }
2487
2488     ret = 0;
2489  fail:
2490     /* disable interrupting */
2491     global_video_state = NULL;
2492
2493     /* close each stream */
2494     if (is->audio_stream >= 0)
2495         stream_component_close(is, is->audio_stream);
2496     if (is->video_stream >= 0)
2497         stream_component_close(is, is->video_stream);
2498     if (is->subtitle_stream >= 0)
2499         stream_component_close(is, is->subtitle_stream);
2500     if (is->ic) {
2501         avformat_close_input(&is->ic);
2502     }
2503
2504     if (ret != 0) {
2505         SDL_Event event;
2506
2507         event.type = FF_QUIT_EVENT;
2508         event.user.data1 = is;
2509         SDL_PushEvent(&event);
2510     }
2511     return 0;
2512 }
2513
2514 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2515 {
2516     VideoState *is;
2517
2518     is = av_mallocz(sizeof(VideoState));
2519     if (!is)
2520         return NULL;
2521     av_strlcpy(is->filename, filename, sizeof(is->filename));
2522     is->iformat = iformat;
2523     is->ytop    = 0;
2524     is->xleft   = 0;
2525
2526     /* start video display */
2527     is->pictq_mutex = SDL_CreateMutex();
2528     is->pictq_cond  = SDL_CreateCond();
2529
2530     is->subpq_mutex = SDL_CreateMutex();
2531     is->subpq_cond  = SDL_CreateCond();
2532
2533     is->av_sync_type = av_sync_type;
2534     is->parse_tid    = SDL_CreateThread(decode_thread, is);
2535     if (!is->parse_tid) {
2536         av_free(is);
2537         return NULL;
2538     }
2539     return is;
2540 }
2541
2542 static void stream_cycle_channel(VideoState *is, int codec_type)
2543 {
2544     AVFormatContext *ic = is->ic;
2545     int start_index, stream_index;
2546     AVStream *st;
2547
2548     if (codec_type == AVMEDIA_TYPE_VIDEO)
2549         start_index = is->video_stream;
2550     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2551         start_index = is->audio_stream;
2552     else
2553         start_index = is->subtitle_stream;
2554     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2555         return;
2556     stream_index = start_index;
2557     for (;;) {
2558         if (++stream_index >= is->ic->nb_streams)
2559         {
2560             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2561             {
2562                 stream_index = -1;
2563                 goto the_end;
2564             } else
2565                 stream_index = 0;
2566         }
2567         if (stream_index == start_index)
2568             return;
2569         st = ic->streams[stream_index];
2570         if (st->codec->codec_type == codec_type) {
2571             /* check that parameters are OK */
2572             switch (codec_type) {
2573             case AVMEDIA_TYPE_AUDIO:
2574                 if (st->codec->sample_rate != 0 &&
2575                     st->codec->channels != 0)
2576                     goto the_end;
2577                 break;
2578             case AVMEDIA_TYPE_VIDEO:
2579             case AVMEDIA_TYPE_SUBTITLE:
2580                 goto the_end;
2581             default:
2582                 break;
2583             }
2584         }
2585     }
2586  the_end:
2587     stream_component_close(is, start_index);
2588     stream_component_open(is, stream_index);
2589 }
2590
2591
2592 static void toggle_full_screen(void)
2593 {
2594 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2595     /* OS X needs to empty the picture_queue */
2596     int i;
2597     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2598         cur_stream->pictq[i].reallocate = 1;
2599 #endif
2600     is_full_screen = !is_full_screen;
2601     video_open(cur_stream);
2602 }
2603
2604 static void toggle_pause(void)
2605 {
2606     if (cur_stream)
2607         stream_pause(cur_stream);
2608     step = 0;
2609 }
2610
2611 static void step_to_next_frame(void)
2612 {
2613     if (cur_stream) {
2614         /* if the stream is paused unpause it, then step */
2615         if (cur_stream->paused)
2616             stream_pause(cur_stream);
2617     }
2618     step = 1;
2619 }
2620
2621 static void toggle_audio_display(void)
2622 {
2623     if (cur_stream) {
2624         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2625         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2626         fill_rectangle(screen,
2627                        cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2628                        bgcolor);
2629         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2630     }
2631 }
2632
2633 static void seek_chapter(VideoState *is, int incr)
2634 {
2635     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
2636     int i;
2637
2638     if (!is->ic->nb_chapters)
2639         return;
2640
2641     /* find the current chapter */
2642     for (i = 0; i < is->ic->nb_chapters; i++) {
2643         AVChapter *ch = is->ic->chapters[i];
2644         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
2645             i--;
2646             break;
2647         }
2648     }
2649
2650     i += incr;
2651     i = FFMAX(i, 0);
2652     if (i >= is->ic->nb_chapters)
2653         return;
2654
2655     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
2656     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
2657                                  AV_TIME_BASE_Q), 0, 0);
2658 }
2659
2660 /* handle an event sent by the GUI */
2661 static void event_loop(void)
2662 {
2663     SDL_Event event;
2664     double incr, pos, frac;
2665
2666     for (;;) {
2667         double x;
2668         SDL_WaitEvent(&event);
2669         switch (event.type) {
2670         case SDL_KEYDOWN:
2671             if (exit_on_keydown) {
2672                 do_exit();
2673                 break;
2674             }
2675             switch (event.key.keysym.sym) {
2676             case SDLK_ESCAPE:
2677             case SDLK_q:
2678                 do_exit();
2679                 break;
2680             case SDLK_f:
2681                 toggle_full_screen();
2682                 break;
2683             case SDLK_p:
2684             case SDLK_SPACE:
2685                 toggle_pause();
2686                 break;
2687             case SDLK_s: // S: Step to next frame
2688                 step_to_next_frame();
2689                 break;
2690             case SDLK_a:
2691                 if (cur_stream)
2692                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2693                 break;
2694             case SDLK_v:
2695                 if (cur_stream)
2696                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2697                 break;
2698             case SDLK_t:
2699                 if (cur_stream)
2700                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2701                 break;
2702             case SDLK_w:
2703                 toggle_audio_display();
2704                 break;
2705             case SDLK_PAGEUP:
2706                 seek_chapter(cur_stream, 1);
2707                 break;
2708             case SDLK_PAGEDOWN:
2709                 seek_chapter(cur_stream, -1);
2710                 break;
2711             case SDLK_LEFT:
2712                 incr = -10.0;
2713                 goto do_seek;
2714             case SDLK_RIGHT:
2715                 incr = 10.0;
2716                 goto do_seek;
2717             case SDLK_UP:
2718                 incr = 60.0;
2719                 goto do_seek;
2720             case SDLK_DOWN:
2721                 incr = -60.0;
2722             do_seek:
2723                 if (cur_stream) {
2724                     if (seek_by_bytes) {
2725                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2726                             pos = cur_stream->video_current_pos;
2727                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2728                             pos = cur_stream->audio_pkt.pos;
2729                         } else
2730                             pos = avio_tell(cur_stream->ic->pb);
2731                         if (cur_stream->ic->bit_rate)
2732                             incr *= cur_stream->ic->bit_rate / 8.0;
2733                         else
2734                             incr *= 180000.0;
2735                         pos += incr;
2736                         stream_seek(cur_stream, pos, incr, 1);
2737                     } else {
2738                         pos = get_master_clock(cur_stream);
2739                         pos += incr;
2740                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2741                     }
2742                 }
2743                 break;
2744             default:
2745                 break;
2746             }
2747             break;
2748         case SDL_MOUSEBUTTONDOWN:
2749             if (exit_on_mousedown) {
2750                 do_exit();
2751                 break;
2752             }
2753         case SDL_MOUSEMOTION:
2754             if (event.type == SDL_MOUSEBUTTONDOWN) {
2755                 x = event.button.x;
2756             } else {
2757                 if (event.motion.state != SDL_PRESSED)
2758                     break;
2759                 x = event.motion.x;
2760             }
2761             if (cur_stream) {
2762                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2763                     uint64_t size =  avio_size(cur_stream->ic->pb);
2764                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2765                 } else {
2766                     int64_t ts;
2767                     int ns, hh, mm, ss;
2768                     int tns, thh, tmm, tss;
2769                     tns  = cur_stream->ic->duration / 1000000LL;
2770                     thh  = tns / 3600;
2771                     tmm  = (tns % 3600) / 60;
2772                     tss  = (tns % 60);
2773                     frac = x / cur_stream->width;
2774                     ns   = frac * tns;
2775                     hh   = ns / 3600;
2776                     mm   = (ns % 3600) / 60;
2777                     ss   = (ns % 60);
2778                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2779                             hh, mm, ss, thh, tmm, tss);
2780                     ts = frac * cur_stream->ic->duration;
2781                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2782                         ts += cur_stream->ic->start_time;
2783                     stream_seek(cur_stream, ts, 0, 0);
2784                 }
2785             }
2786             break;
2787         case SDL_VIDEORESIZE:
2788             if (cur_stream) {
2789                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2790                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2791                 screen_width  = cur_stream->width  = event.resize.w;
2792                 screen_height = cur_stream->height = event.resize.h;
2793             }
2794             break;
2795         case SDL_QUIT:
2796         case FF_QUIT_EVENT:
2797             do_exit();
2798             break;
2799         case FF_ALLOC_EVENT:
2800             video_open(event.user.data1);
2801             alloc_picture(event.user.data1);
2802             break;
2803         case FF_REFRESH_EVENT:
2804             video_refresh_timer(event.user.data1);
2805             cur_stream->refresh = 0;
2806             break;
2807         default:
2808             break;
2809         }
2810     }
2811 }
2812
2813 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
2814 {
2815     av_log(NULL, AV_LOG_ERROR,
2816            "Option '%s' has been removed, use private format options instead\n", opt);
2817     return AVERROR(EINVAL);
2818 }
2819
2820 static int opt_width(void *optctx, const char *opt, const char *arg)
2821 {
2822     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2823     return 0;
2824 }
2825
2826 static int opt_height(void *optctx, const char *opt, const char *arg)
2827 {
2828     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2829     return 0;
2830 }
2831
2832 static int opt_format(void *optctx, const char *opt, const char *arg)
2833 {
2834     file_iformat = av_find_input_format(arg);
2835     if (!file_iformat) {
2836         fprintf(stderr, "Unknown input format: %s\n", arg);
2837         return AVERROR(EINVAL);
2838     }
2839     return 0;
2840 }
2841
2842 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
2843 {
2844     av_log(NULL, AV_LOG_ERROR,
2845            "Option '%s' has been removed, use private format options instead\n", opt);
2846     return AVERROR(EINVAL);
2847 }
2848
2849 static int opt_sync(void *optctx, const char *opt, const char *arg)
2850 {
2851     if (!strcmp(arg, "audio"))
2852         av_sync_type = AV_SYNC_AUDIO_MASTER;
2853     else if (!strcmp(arg, "video"))
2854         av_sync_type = AV_SYNC_VIDEO_MASTER;
2855     else if (!strcmp(arg, "ext"))
2856         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2857     else {
2858         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2859         exit(1);
2860     }
2861     return 0;
2862 }
2863
2864 static int opt_seek(void *optctx, const char *opt, const char *arg)
2865 {
2866     start_time = parse_time_or_die(opt, arg, 1);
2867     return 0;
2868 }
2869
2870 static int opt_duration(void *optctx, const char *opt, const char *arg)
2871 {
2872     duration = parse_time_or_die(opt, arg, 1);
2873     return 0;
2874 }
2875
2876 static const OptionDef options[] = {
2877 #include "cmdutils_common_opts.h"
2878     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
2879     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
2880     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2881     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
2882     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
2883     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
2884     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2885     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2886     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2887     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
2888     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2889     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2890     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
2891     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
2892     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
2893     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
2894     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
2895     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
2896     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
2897     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2898     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
2899     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
2900     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
2901     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo",  "algo" },
2902     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options",  "bit_mask" },
2903     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2904     { "noautoexit", OPT_BOOL | OPT_EXPERT, { &noautoexit }, "Do not exit at the end of playback", "" },
2905     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
2906     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
2907     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
2908     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
2909     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
2910     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
2911 #if CONFIG_AVFILTER
2912     { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" },
2913 #endif
2914     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
2915     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { opt_default }, "generic catch all option", "" },
2916     { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2917     { NULL, },
2918 };
2919
2920 static void show_usage(void)
2921 {
2922     printf("Simple media player\n");
2923     printf("usage: %s [options] input_file\n", program_name);
2924     printf("\n");
2925 }
2926
2927 void show_help_default(const char *opt, const char *arg)
2928 {
2929     av_log_set_callback(log_callback_help);
2930     show_usage();
2931     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
2932     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
2933     printf("\n");
2934     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2935     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2936 #if !CONFIG_AVFILTER
2937     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
2938 #endif
2939     printf("\nWhile playing:\n"
2940            "q, ESC              quit\n"
2941            "f                   toggle full screen\n"
2942            "p, SPC              pause\n"
2943            "a                   cycle audio channel\n"
2944            "v                   cycle video channel\n"
2945            "t                   cycle subtitle channel\n"
2946            "w                   show audio waves\n"
2947            "s                   activate frame-step mode\n"
2948            "left/right          seek backward/forward 10 seconds\n"
2949            "down/up             seek backward/forward 1 minute\n"
2950            "mouse click         seek to percentage in file corresponding to fraction of width\n"
2951            );
2952 }
2953
2954 static void opt_input_file(void *optctx, const char *filename)
2955 {
2956     if (input_filename) {
2957         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2958                 filename, input_filename);
2959         exit(1);
2960     }
2961     if (!strcmp(filename, "-"))
2962         filename = "pipe:";
2963     input_filename = filename;
2964 }
2965
2966 /* Called from the main */
2967 int main(int argc, char **argv)
2968 {
2969     int flags;
2970
2971     av_log_set_flags(AV_LOG_SKIP_REPEATED);
2972     parse_loglevel(argc, argv, options);
2973
2974     /* register all codecs, demux and protocols */
2975     avcodec_register_all();
2976 #if CONFIG_AVDEVICE
2977     avdevice_register_all();
2978 #endif
2979 #if CONFIG_AVFILTER
2980     avfilter_register_all();
2981 #endif
2982     av_register_all();
2983     avformat_network_init();
2984
2985     init_opts();
2986
2987     show_banner();
2988
2989     parse_options(NULL, argc, argv, options, opt_input_file);
2990
2991     if (!input_filename) {
2992         show_usage();
2993         fprintf(stderr, "An input file must be specified\n");
2994         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2995         exit(1);
2996     }
2997
2998     if (display_disable) {
2999         video_disable = 1;
3000     }
3001     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3002 #if !defined(__MINGW32__) && !defined(__APPLE__)
3003     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3004 #endif
3005     if (SDL_Init (flags)) {
3006         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3007         exit(1);
3008     }
3009
3010     if (!display_disable) {
3011         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3012         fs_screen_width = vi->current_w;
3013         fs_screen_height = vi->current_h;
3014     }
3015
3016     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3017     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3018     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3019
3020     av_init_packet(&flush_pkt);
3021     flush_pkt.data = (uint8_t *)&flush_pkt;
3022
3023     cur_stream = stream_open(input_filename, file_iformat);
3024
3025     event_loop();
3026
3027     /* never returns */
3028
3029     return 0;
3030 }