avcodec/dvbsubdec: support returning exact end times
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/colorspace.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avcodec.h"
52 # include "libavfilter/avfilter.h"
53 # include "libavfilter/buffersink.h"
54 # include "libavfilter/buffersrc.h"
55 #endif
56
57 #include <SDL.h>
58 #include <SDL_thread.h>
59
60 #include "cmdutils.h"
61
62 #include <assert.h>
63
64 const char program_name[] = "ffplay";
65 const int program_birth_year = 2003;
66
67 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
68 #define MIN_FRAMES 5
69
70 /* SDL audio buffer size, in samples. Should be small to have precise
71    A/V sync as SDL does not have hardware buffer fullness info. */
72 #define SDL_AUDIO_BUFFER_SIZE 1024
73
74 /* no AV sync correction is done if below the minimum AV sync threshold */
75 #define AV_SYNC_THRESHOLD_MIN 0.04
76 /* AV sync correction is done if above the maximum AV sync threshold */
77 #define AV_SYNC_THRESHOLD_MAX 0.1
78 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
79 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
80 /* no AV correction is done if too big error */
81 #define AV_NOSYNC_THRESHOLD 10.0
82
83 /* maximum audio speed change to get correct sync */
84 #define SAMPLE_CORRECTION_PERCENT_MAX 10
85
86 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
87 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
88 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
89 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
90
91 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
92 #define AUDIO_DIFF_AVG_NB   20
93
94 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
95 #define REFRESH_RATE 0.01
96
97 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
98 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
99 #define SAMPLE_ARRAY_SIZE (8 * 65536)
100
101 #define CURSOR_HIDE_DELAY 1000000
102
103 static int64_t sws_flags = SWS_BICUBIC;
104
105 typedef struct MyAVPacketList {
106     AVPacket pkt;
107     struct MyAVPacketList *next;
108     int serial;
109 } MyAVPacketList;
110
111 typedef struct PacketQueue {
112     MyAVPacketList *first_pkt, *last_pkt;
113     int nb_packets;
114     int size;
115     int abort_request;
116     int serial;
117     SDL_mutex *mutex;
118     SDL_cond *cond;
119 } PacketQueue;
120
121 #define VIDEO_PICTURE_QUEUE_SIZE 3
122 #define SUBPICTURE_QUEUE_SIZE 4
123
124 typedef struct VideoPicture {
125     double pts;             // presentation timestamp for this picture
126     double duration;        // estimated duration based on frame rate
127     int64_t pos;            // byte position in file
128     SDL_Overlay *bmp;
129     int width, height; /* source height & width */
130     int allocated;
131     int reallocate;
132     int serial;
133
134     AVRational sar;
135 } VideoPicture;
136
137 typedef struct SubPicture {
138     double pts; /* presentation time stamp for this picture */
139     AVSubtitle sub;
140     int serial;
141 } SubPicture;
142
143 typedef struct AudioParams {
144     int freq;
145     int channels;
146     int64_t channel_layout;
147     enum AVSampleFormat fmt;
148     int frame_size;
149     int bytes_per_sec;
150 } AudioParams;
151
152 typedef struct Clock {
153     double pts;           /* clock base */
154     double pts_drift;     /* clock base minus time at which we updated the clock */
155     double last_updated;
156     double speed;
157     int serial;           /* clock is based on a packet with this serial */
158     int paused;
159     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
160 } Clock;
161
162 enum {
163     AV_SYNC_AUDIO_MASTER, /* default choice */
164     AV_SYNC_VIDEO_MASTER,
165     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
166 };
167
168 typedef struct VideoState {
169     SDL_Thread *read_tid;
170     SDL_Thread *video_tid;
171     AVInputFormat *iformat;
172     int no_background;
173     int abort_request;
174     int force_refresh;
175     int paused;
176     int last_paused;
177     int queue_attachments_req;
178     int seek_req;
179     int seek_flags;
180     int64_t seek_pos;
181     int64_t seek_rel;
182     int read_pause_return;
183     AVFormatContext *ic;
184     int realtime;
185     int audio_finished;
186     int video_finished;
187
188     Clock audclk;
189     Clock vidclk;
190     Clock extclk;
191
192     int audio_stream;
193
194     int av_sync_type;
195
196     double audio_clock;
197     int audio_clock_serial;
198     double audio_diff_cum; /* used for AV difference average computation */
199     double audio_diff_avg_coef;
200     double audio_diff_threshold;
201     int audio_diff_avg_count;
202     AVStream *audio_st;
203     PacketQueue audioq;
204     int audio_hw_buf_size;
205     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
206     uint8_t *audio_buf;
207     uint8_t *audio_buf1;
208     unsigned int audio_buf_size; /* in bytes */
209     unsigned int audio_buf1_size;
210     int audio_buf_index; /* in bytes */
211     int audio_write_buf_size;
212     int audio_buf_frames_pending;
213     AVPacket audio_pkt_temp;
214     AVPacket audio_pkt;
215     int audio_pkt_temp_serial;
216     int audio_last_serial;
217     struct AudioParams audio_src;
218 #if CONFIG_AVFILTER
219     struct AudioParams audio_filter_src;
220 #endif
221     struct AudioParams audio_tgt;
222     struct SwrContext *swr_ctx;
223     int frame_drops_early;
224     int frame_drops_late;
225     AVFrame *frame;
226     int64_t audio_frame_next_pts;
227
228     enum ShowMode {
229         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
230     } show_mode;
231     int16_t sample_array[SAMPLE_ARRAY_SIZE];
232     int sample_array_index;
233     int last_i_start;
234     RDFTContext *rdft;
235     int rdft_bits;
236     FFTSample *rdft_data;
237     int xpos;
238     double last_vis_time;
239
240     SDL_Thread *subtitle_tid;
241     int subtitle_stream;
242     AVStream *subtitle_st;
243     PacketQueue subtitleq;
244     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
245     int subpq_size, subpq_rindex, subpq_windex;
246     SDL_mutex *subpq_mutex;
247     SDL_cond *subpq_cond;
248
249     double frame_timer;
250     double frame_last_returned_time;
251     double frame_last_filter_delay;
252     int video_stream;
253     AVStream *video_st;
254     PacketQueue videoq;
255     int64_t video_current_pos;      // current displayed file pos
256     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
257     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
258     int pictq_size, pictq_rindex, pictq_windex;
259     SDL_mutex *pictq_mutex;
260     SDL_cond *pictq_cond;
261 #if !CONFIG_AVFILTER
262     struct SwsContext *img_convert_ctx;
263 #endif
264     SDL_Rect last_display_rect;
265
266     char filename[1024];
267     int width, height, xleft, ytop;
268     int step;
269
270 #if CONFIG_AVFILTER
271     int vfilter_idx;
272     AVFilterContext *in_video_filter;   // the first filter in the video chain
273     AVFilterContext *out_video_filter;  // the last filter in the video chain
274     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
275     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
276     AVFilterGraph *agraph;              // audio filter graph
277 #endif
278
279     int last_video_stream, last_audio_stream, last_subtitle_stream;
280
281     SDL_cond *continue_read_thread;
282 } VideoState;
283
284 /* options specified by the user */
285 static AVInputFormat *file_iformat;
286 static const char *input_filename;
287 static const char *window_title;
288 static int fs_screen_width;
289 static int fs_screen_height;
290 static int default_width  = 640;
291 static int default_height = 480;
292 static int screen_width  = 0;
293 static int screen_height = 0;
294 static int audio_disable;
295 static int video_disable;
296 static int subtitle_disable;
297 static int wanted_stream[AVMEDIA_TYPE_NB] = {
298     [AVMEDIA_TYPE_AUDIO]    = -1,
299     [AVMEDIA_TYPE_VIDEO]    = -1,
300     [AVMEDIA_TYPE_SUBTITLE] = -1,
301 };
302 static int seek_by_bytes = -1;
303 static int display_disable;
304 static int show_status = 1;
305 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
306 static int64_t start_time = AV_NOPTS_VALUE;
307 static int64_t duration = AV_NOPTS_VALUE;
308 static int workaround_bugs = 1;
309 static int fast = 0;
310 static int genpts = 0;
311 static int lowres = 0;
312 static int decoder_reorder_pts = -1;
313 static int autoexit;
314 static int exit_on_keydown;
315 static int exit_on_mousedown;
316 static int loop = 1;
317 static int framedrop = -1;
318 static int infinite_buffer = -1;
319 static enum ShowMode show_mode = SHOW_MODE_NONE;
320 static const char *audio_codec_name;
321 static const char *subtitle_codec_name;
322 static const char *video_codec_name;
323 double rdftspeed = 0.02;
324 static int64_t cursor_last_shown;
325 static int cursor_hidden = 0;
326 #if CONFIG_AVFILTER
327 static const char **vfilters_list = NULL;
328 static int nb_vfilters = 0;
329 static char *afilters = NULL;
330 #endif
331 static int autorotate = 1;
332
333 /* current context */
334 static int is_full_screen;
335 static int64_t audio_callback_time;
336
337 static AVPacket flush_pkt;
338
339 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
340 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
341
342 static SDL_Surface *screen;
343
344 #if CONFIG_AVFILTER
345 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
346 {
347     GROW_ARRAY(vfilters_list, nb_vfilters);
348     vfilters_list[nb_vfilters - 1] = arg;
349     return 0;
350 }
351 #endif
352
353 static inline
354 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
355                    enum AVSampleFormat fmt2, int64_t channel_count2)
356 {
357     /* If channel count == 1, planar and non-planar formats are the same */
358     if (channel_count1 == 1 && channel_count2 == 1)
359         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
360     else
361         return channel_count1 != channel_count2 || fmt1 != fmt2;
362 }
363
364 static inline
365 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
366 {
367     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
368         return channel_layout;
369     else
370         return 0;
371 }
372
373 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
374 {
375     MyAVPacketList *pkt1;
376
377     if (q->abort_request)
378        return -1;
379
380     pkt1 = av_malloc(sizeof(MyAVPacketList));
381     if (!pkt1)
382         return -1;
383     pkt1->pkt = *pkt;
384     pkt1->next = NULL;
385     if (pkt == &flush_pkt)
386         q->serial++;
387     pkt1->serial = q->serial;
388
389     if (!q->last_pkt)
390         q->first_pkt = pkt1;
391     else
392         q->last_pkt->next = pkt1;
393     q->last_pkt = pkt1;
394     q->nb_packets++;
395     q->size += pkt1->pkt.size + sizeof(*pkt1);
396     /* XXX: should duplicate packet data in DV case */
397     SDL_CondSignal(q->cond);
398     return 0;
399 }
400
401 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
402 {
403     int ret;
404
405     /* duplicate the packet */
406     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
407         return -1;
408
409     SDL_LockMutex(q->mutex);
410     ret = packet_queue_put_private(q, pkt);
411     SDL_UnlockMutex(q->mutex);
412
413     if (pkt != &flush_pkt && ret < 0)
414         av_free_packet(pkt);
415
416     return ret;
417 }
418
419 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
420 {
421     AVPacket pkt1, *pkt = &pkt1;
422     av_init_packet(pkt);
423     pkt->data = NULL;
424     pkt->size = 0;
425     pkt->stream_index = stream_index;
426     return packet_queue_put(q, pkt);
427 }
428
429 /* packet queue handling */
430 static void packet_queue_init(PacketQueue *q)
431 {
432     memset(q, 0, sizeof(PacketQueue));
433     q->mutex = SDL_CreateMutex();
434     q->cond = SDL_CreateCond();
435     q->abort_request = 1;
436 }
437
438 static void packet_queue_flush(PacketQueue *q)
439 {
440     MyAVPacketList *pkt, *pkt1;
441
442     SDL_LockMutex(q->mutex);
443     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
444         pkt1 = pkt->next;
445         av_free_packet(&pkt->pkt);
446         av_freep(&pkt);
447     }
448     q->last_pkt = NULL;
449     q->first_pkt = NULL;
450     q->nb_packets = 0;
451     q->size = 0;
452     SDL_UnlockMutex(q->mutex);
453 }
454
455 static void packet_queue_destroy(PacketQueue *q)
456 {
457     packet_queue_flush(q);
458     SDL_DestroyMutex(q->mutex);
459     SDL_DestroyCond(q->cond);
460 }
461
462 static void packet_queue_abort(PacketQueue *q)
463 {
464     SDL_LockMutex(q->mutex);
465
466     q->abort_request = 1;
467
468     SDL_CondSignal(q->cond);
469
470     SDL_UnlockMutex(q->mutex);
471 }
472
473 static void packet_queue_start(PacketQueue *q)
474 {
475     SDL_LockMutex(q->mutex);
476     q->abort_request = 0;
477     packet_queue_put_private(q, &flush_pkt);
478     SDL_UnlockMutex(q->mutex);
479 }
480
481 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
482 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
483 {
484     MyAVPacketList *pkt1;
485     int ret;
486
487     SDL_LockMutex(q->mutex);
488
489     for (;;) {
490         if (q->abort_request) {
491             ret = -1;
492             break;
493         }
494
495         pkt1 = q->first_pkt;
496         if (pkt1) {
497             q->first_pkt = pkt1->next;
498             if (!q->first_pkt)
499                 q->last_pkt = NULL;
500             q->nb_packets--;
501             q->size -= pkt1->pkt.size + sizeof(*pkt1);
502             *pkt = pkt1->pkt;
503             if (serial)
504                 *serial = pkt1->serial;
505             av_free(pkt1);
506             ret = 1;
507             break;
508         } else if (!block) {
509             ret = 0;
510             break;
511         } else {
512             SDL_CondWait(q->cond, q->mutex);
513         }
514     }
515     SDL_UnlockMutex(q->mutex);
516     return ret;
517 }
518
519 static inline void fill_rectangle(SDL_Surface *screen,
520                                   int x, int y, int w, int h, int color, int update)
521 {
522     SDL_Rect rect;
523     rect.x = x;
524     rect.y = y;
525     rect.w = w;
526     rect.h = h;
527     SDL_FillRect(screen, &rect, color);
528     if (update && w > 0 && h > 0)
529         SDL_UpdateRect(screen, x, y, w, h);
530 }
531
532 /* draw only the border of a rectangle */
533 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
534 {
535     int w1, w2, h1, h2;
536
537     /* fill the background */
538     w1 = x;
539     if (w1 < 0)
540         w1 = 0;
541     w2 = width - (x + w);
542     if (w2 < 0)
543         w2 = 0;
544     h1 = y;
545     if (h1 < 0)
546         h1 = 0;
547     h2 = height - (y + h);
548     if (h2 < 0)
549         h2 = 0;
550     fill_rectangle(screen,
551                    xleft, ytop,
552                    w1, height,
553                    color, update);
554     fill_rectangle(screen,
555                    xleft + width - w2, ytop,
556                    w2, height,
557                    color, update);
558     fill_rectangle(screen,
559                    xleft + w1, ytop,
560                    width - w1 - w2, h1,
561                    color, update);
562     fill_rectangle(screen,
563                    xleft + w1, ytop + height - h2,
564                    width - w1 - w2, h2,
565                    color, update);
566 }
567
568 #define ALPHA_BLEND(a, oldp, newp, s)\
569 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
570
571 #define RGBA_IN(r, g, b, a, s)\
572 {\
573     unsigned int v = ((const uint32_t *)(s))[0];\
574     a = (v >> 24) & 0xff;\
575     r = (v >> 16) & 0xff;\
576     g = (v >> 8) & 0xff;\
577     b = v & 0xff;\
578 }
579
580 #define YUVA_IN(y, u, v, a, s, pal)\
581 {\
582     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
583     a = (val >> 24) & 0xff;\
584     y = (val >> 16) & 0xff;\
585     u = (val >> 8) & 0xff;\
586     v = val & 0xff;\
587 }
588
589 #define YUVA_OUT(d, y, u, v, a)\
590 {\
591     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
592 }
593
594
595 #define BPP 1
596
597 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
598 {
599     int wrap, wrap3, width2, skip2;
600     int y, u, v, a, u1, v1, a1, w, h;
601     uint8_t *lum, *cb, *cr;
602     const uint8_t *p;
603     const uint32_t *pal;
604     int dstx, dsty, dstw, dsth;
605
606     dstw = av_clip(rect->w, 0, imgw);
607     dsth = av_clip(rect->h, 0, imgh);
608     dstx = av_clip(rect->x, 0, imgw - dstw);
609     dsty = av_clip(rect->y, 0, imgh - dsth);
610     lum = dst->data[0] + dsty * dst->linesize[0];
611     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
612     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
613
614     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
615     skip2 = dstx >> 1;
616     wrap = dst->linesize[0];
617     wrap3 = rect->pict.linesize[0];
618     p = rect->pict.data[0];
619     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
620
621     if (dsty & 1) {
622         lum += dstx;
623         cb += skip2;
624         cr += skip2;
625
626         if (dstx & 1) {
627             YUVA_IN(y, u, v, a, p, pal);
628             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
629             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
630             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
631             cb++;
632             cr++;
633             lum++;
634             p += BPP;
635         }
636         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
637             YUVA_IN(y, u, v, a, p, pal);
638             u1 = u;
639             v1 = v;
640             a1 = a;
641             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
642
643             YUVA_IN(y, u, v, a, p + BPP, pal);
644             u1 += u;
645             v1 += v;
646             a1 += a;
647             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
648             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
649             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
650             cb++;
651             cr++;
652             p += 2 * BPP;
653             lum += 2;
654         }
655         if (w) {
656             YUVA_IN(y, u, v, a, p, pal);
657             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
658             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
659             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
660             p++;
661             lum++;
662         }
663         p += wrap3 - dstw * BPP;
664         lum += wrap - dstw - dstx;
665         cb += dst->linesize[1] - width2 - skip2;
666         cr += dst->linesize[2] - width2 - skip2;
667     }
668     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
669         lum += dstx;
670         cb += skip2;
671         cr += skip2;
672
673         if (dstx & 1) {
674             YUVA_IN(y, u, v, a, p, pal);
675             u1 = u;
676             v1 = v;
677             a1 = a;
678             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
679             p += wrap3;
680             lum += wrap;
681             YUVA_IN(y, u, v, a, p, pal);
682             u1 += u;
683             v1 += v;
684             a1 += a;
685             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
686             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
687             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
688             cb++;
689             cr++;
690             p += -wrap3 + BPP;
691             lum += -wrap + 1;
692         }
693         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
694             YUVA_IN(y, u, v, a, p, pal);
695             u1 = u;
696             v1 = v;
697             a1 = a;
698             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
699
700             YUVA_IN(y, u, v, a, p + BPP, pal);
701             u1 += u;
702             v1 += v;
703             a1 += a;
704             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
705             p += wrap3;
706             lum += wrap;
707
708             YUVA_IN(y, u, v, a, p, pal);
709             u1 += u;
710             v1 += v;
711             a1 += a;
712             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
713
714             YUVA_IN(y, u, v, a, p + BPP, pal);
715             u1 += u;
716             v1 += v;
717             a1 += a;
718             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
719
720             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
721             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
722
723             cb++;
724             cr++;
725             p += -wrap3 + 2 * BPP;
726             lum += -wrap + 2;
727         }
728         if (w) {
729             YUVA_IN(y, u, v, a, p, pal);
730             u1 = u;
731             v1 = v;
732             a1 = a;
733             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
734             p += wrap3;
735             lum += wrap;
736             YUVA_IN(y, u, v, a, p, pal);
737             u1 += u;
738             v1 += v;
739             a1 += a;
740             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
741             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
742             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
743             cb++;
744             cr++;
745             p += -wrap3 + BPP;
746             lum += -wrap + 1;
747         }
748         p += wrap3 + (wrap3 - dstw * BPP);
749         lum += wrap + (wrap - dstw - dstx);
750         cb += dst->linesize[1] - width2 - skip2;
751         cr += dst->linesize[2] - width2 - skip2;
752     }
753     /* handle odd height */
754     if (h) {
755         lum += dstx;
756         cb += skip2;
757         cr += skip2;
758
759         if (dstx & 1) {
760             YUVA_IN(y, u, v, a, p, pal);
761             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
762             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
763             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
764             cb++;
765             cr++;
766             lum++;
767             p += BPP;
768         }
769         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
770             YUVA_IN(y, u, v, a, p, pal);
771             u1 = u;
772             v1 = v;
773             a1 = a;
774             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
775
776             YUVA_IN(y, u, v, a, p + BPP, pal);
777             u1 += u;
778             v1 += v;
779             a1 += a;
780             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
781             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
782             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
783             cb++;
784             cr++;
785             p += 2 * BPP;
786             lum += 2;
787         }
788         if (w) {
789             YUVA_IN(y, u, v, a, p, pal);
790             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
791             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
792             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
793         }
794     }
795 }
796
797 static void free_picture(VideoPicture *vp)
798 {
799      if (vp->bmp) {
800          SDL_FreeYUVOverlay(vp->bmp);
801          vp->bmp = NULL;
802      }
803 }
804
805 static void free_subpicture(SubPicture *sp)
806 {
807     avsubtitle_free(&sp->sub);
808 }
809
810 static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
811 {
812     float aspect_ratio;
813     int width, height, x, y;
814
815     if (vp->sar.num == 0)
816         aspect_ratio = 0;
817     else
818         aspect_ratio = av_q2d(vp->sar);
819
820     if (aspect_ratio <= 0.0)
821         aspect_ratio = 1.0;
822     aspect_ratio *= (float)vp->width / (float)vp->height;
823
824     /* XXX: we suppose the screen has a 1.0 pixel ratio */
825     height = scr_height;
826     width = ((int)rint(height * aspect_ratio)) & ~1;
827     if (width > scr_width) {
828         width = scr_width;
829         height = ((int)rint(width / aspect_ratio)) & ~1;
830     }
831     x = (scr_width - width) / 2;
832     y = (scr_height - height) / 2;
833     rect->x = scr_xleft + x;
834     rect->y = scr_ytop  + y;
835     rect->w = FFMAX(width,  1);
836     rect->h = FFMAX(height, 1);
837 }
838
839 static void video_image_display(VideoState *is)
840 {
841     VideoPicture *vp;
842     SubPicture *sp;
843     AVPicture pict;
844     SDL_Rect rect;
845     int i;
846
847     vp = &is->pictq[is->pictq_rindex];
848     if (vp->bmp) {
849         if (is->subtitle_st) {
850             if (is->subpq_size > 0) {
851                 sp = &is->subpq[is->subpq_rindex];
852
853                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
854                     SDL_LockYUVOverlay (vp->bmp);
855
856                     pict.data[0] = vp->bmp->pixels[0];
857                     pict.data[1] = vp->bmp->pixels[2];
858                     pict.data[2] = vp->bmp->pixels[1];
859
860                     pict.linesize[0] = vp->bmp->pitches[0];
861                     pict.linesize[1] = vp->bmp->pitches[2];
862                     pict.linesize[2] = vp->bmp->pitches[1];
863
864                     for (i = 0; i < sp->sub.num_rects; i++)
865                         blend_subrect(&pict, sp->sub.rects[i],
866                                       vp->bmp->w, vp->bmp->h);
867
868                     SDL_UnlockYUVOverlay (vp->bmp);
869                 }
870             }
871         }
872
873         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
874
875         SDL_DisplayYUVOverlay(vp->bmp, &rect);
876
877         if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
878             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
879             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
880             is->last_display_rect = rect;
881         }
882     }
883 }
884
885 static inline int compute_mod(int a, int b)
886 {
887     return a < 0 ? a%b + b : a%b;
888 }
889
890 static void video_audio_display(VideoState *s)
891 {
892     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
893     int ch, channels, h, h2, bgcolor, fgcolor;
894     int64_t time_diff;
895     int rdft_bits, nb_freq;
896
897     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
898         ;
899     nb_freq = 1 << (rdft_bits - 1);
900
901     /* compute display index : center on currently output samples */
902     channels = s->audio_tgt.channels;
903     nb_display_channels = channels;
904     if (!s->paused) {
905         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
906         n = 2 * channels;
907         delay = s->audio_write_buf_size;
908         delay /= n;
909
910         /* to be more precise, we take into account the time spent since
911            the last buffer computation */
912         if (audio_callback_time) {
913             time_diff = av_gettime_relative() - audio_callback_time;
914             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
915         }
916
917         delay += 2 * data_used;
918         if (delay < data_used)
919             delay = data_used;
920
921         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
922         if (s->show_mode == SHOW_MODE_WAVES) {
923             h = INT_MIN;
924             for (i = 0; i < 1000; i += channels) {
925                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
926                 int a = s->sample_array[idx];
927                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
928                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
929                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
930                 int score = a - d;
931                 if (h < score && (b ^ c) < 0) {
932                     h = score;
933                     i_start = idx;
934                 }
935             }
936         }
937
938         s->last_i_start = i_start;
939     } else {
940         i_start = s->last_i_start;
941     }
942
943     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
944     if (s->show_mode == SHOW_MODE_WAVES) {
945         fill_rectangle(screen,
946                        s->xleft, s->ytop, s->width, s->height,
947                        bgcolor, 0);
948
949         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
950
951         /* total height for one channel */
952         h = s->height / nb_display_channels;
953         /* graph height / 2 */
954         h2 = (h * 9) / 20;
955         for (ch = 0; ch < nb_display_channels; ch++) {
956             i = i_start + ch;
957             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
958             for (x = 0; x < s->width; x++) {
959                 y = (s->sample_array[i] * h2) >> 15;
960                 if (y < 0) {
961                     y = -y;
962                     ys = y1 - y;
963                 } else {
964                     ys = y1;
965                 }
966                 fill_rectangle(screen,
967                                s->xleft + x, ys, 1, y,
968                                fgcolor, 0);
969                 i += channels;
970                 if (i >= SAMPLE_ARRAY_SIZE)
971                     i -= SAMPLE_ARRAY_SIZE;
972             }
973         }
974
975         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
976
977         for (ch = 1; ch < nb_display_channels; ch++) {
978             y = s->ytop + ch * h;
979             fill_rectangle(screen,
980                            s->xleft, y, s->width, 1,
981                            fgcolor, 0);
982         }
983         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
984     } else {
985         nb_display_channels= FFMIN(nb_display_channels, 2);
986         if (rdft_bits != s->rdft_bits) {
987             av_rdft_end(s->rdft);
988             av_free(s->rdft_data);
989             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
990             s->rdft_bits = rdft_bits;
991             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
992         }
993         {
994             FFTSample *data[2];
995             for (ch = 0; ch < nb_display_channels; ch++) {
996                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
997                 i = i_start + ch;
998                 for (x = 0; x < 2 * nb_freq; x++) {
999                     double w = (x-nb_freq) * (1.0 / nb_freq);
1000                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1001                     i += channels;
1002                     if (i >= SAMPLE_ARRAY_SIZE)
1003                         i -= SAMPLE_ARRAY_SIZE;
1004                 }
1005                 av_rdft_calc(s->rdft, data[ch]);
1006             }
1007             /* Least efficient way to do this, we should of course
1008              * directly access it but it is more than fast enough. */
1009             for (y = 0; y < s->height; y++) {
1010                 double w = 1 / sqrt(nb_freq);
1011                 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]));
1012                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1013                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1014                 a = FFMIN(a, 255);
1015                 b = FFMIN(b, 255);
1016                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1017
1018                 fill_rectangle(screen,
1019                             s->xpos, s->height-y, 1, 1,
1020                             fgcolor, 0);
1021             }
1022         }
1023         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1024         if (!s->paused)
1025             s->xpos++;
1026         if (s->xpos >= s->width)
1027             s->xpos= s->xleft;
1028     }
1029 }
1030
1031 static void stream_close(VideoState *is)
1032 {
1033     int i;
1034     /* XXX: use a special url_shutdown call to abort parse cleanly */
1035     is->abort_request = 1;
1036     SDL_WaitThread(is->read_tid, NULL);
1037     packet_queue_destroy(&is->videoq);
1038     packet_queue_destroy(&is->audioq);
1039     packet_queue_destroy(&is->subtitleq);
1040
1041     /* free all pictures */
1042     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
1043         free_picture(&is->pictq[i]);
1044     for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
1045         free_subpicture(&is->subpq[i]);
1046     SDL_DestroyMutex(is->pictq_mutex);
1047     SDL_DestroyCond(is->pictq_cond);
1048     SDL_DestroyMutex(is->subpq_mutex);
1049     SDL_DestroyCond(is->subpq_cond);
1050     SDL_DestroyCond(is->continue_read_thread);
1051 #if !CONFIG_AVFILTER
1052     sws_freeContext(is->img_convert_ctx);
1053 #endif
1054     av_free(is);
1055 }
1056
1057 static void do_exit(VideoState *is)
1058 {
1059     if (is) {
1060         stream_close(is);
1061     }
1062     av_lockmgr_register(NULL);
1063     uninit_opts();
1064 #if CONFIG_AVFILTER
1065     av_freep(&vfilters_list);
1066 #endif
1067     avformat_network_deinit();
1068     if (show_status)
1069         printf("\n");
1070     SDL_Quit();
1071     av_log(NULL, AV_LOG_QUIET, "%s", "");
1072     exit(0);
1073 }
1074
1075 static void sigterm_handler(int sig)
1076 {
1077     exit(123);
1078 }
1079
1080 static void set_default_window_size(VideoPicture *vp)
1081 {
1082     SDL_Rect rect;
1083     calculate_display_rect(&rect, 0, 0, INT_MAX, vp->height, vp);
1084     default_width  = rect.w;
1085     default_height = rect.h;
1086 }
1087
1088 static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
1089 {
1090     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1091     int w,h;
1092
1093     if (is_full_screen) flags |= SDL_FULLSCREEN;
1094     else                flags |= SDL_RESIZABLE;
1095
1096     if (vp && vp->width)
1097         set_default_window_size(vp);
1098
1099     if (is_full_screen && fs_screen_width) {
1100         w = fs_screen_width;
1101         h = fs_screen_height;
1102     } else if (!is_full_screen && screen_width) {
1103         w = screen_width;
1104         h = screen_height;
1105     } else {
1106         w = default_width;
1107         h = default_height;
1108     }
1109     w = FFMIN(16383, w);
1110     if (screen && is->width == screen->w && screen->w == w
1111        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1112         return 0;
1113     screen = SDL_SetVideoMode(w, h, 0, flags);
1114     if (!screen) {
1115         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1116         do_exit(is);
1117     }
1118     if (!window_title)
1119         window_title = input_filename;
1120     SDL_WM_SetCaption(window_title, window_title);
1121
1122     is->width  = screen->w;
1123     is->height = screen->h;
1124
1125     return 0;
1126 }
1127
1128 /* display the current picture, if any */
1129 static void video_display(VideoState *is)
1130 {
1131     if (!screen)
1132         video_open(is, 0, NULL);
1133     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1134         video_audio_display(is);
1135     else if (is->video_st)
1136         video_image_display(is);
1137 }
1138
1139 static double get_clock(Clock *c)
1140 {
1141     if (*c->queue_serial != c->serial)
1142         return NAN;
1143     if (c->paused) {
1144         return c->pts;
1145     } else {
1146         double time = av_gettime_relative() / 1000000.0;
1147         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1148     }
1149 }
1150
1151 static void set_clock_at(Clock *c, double pts, int serial, double time)
1152 {
1153     c->pts = pts;
1154     c->last_updated = time;
1155     c->pts_drift = c->pts - time;
1156     c->serial = serial;
1157 }
1158
1159 static void set_clock(Clock *c, double pts, int serial)
1160 {
1161     double time = av_gettime_relative() / 1000000.0;
1162     set_clock_at(c, pts, serial, time);
1163 }
1164
1165 static void set_clock_speed(Clock *c, double speed)
1166 {
1167     set_clock(c, get_clock(c), c->serial);
1168     c->speed = speed;
1169 }
1170
1171 static void init_clock(Clock *c, int *queue_serial)
1172 {
1173     c->speed = 1.0;
1174     c->paused = 0;
1175     c->queue_serial = queue_serial;
1176     set_clock(c, NAN, -1);
1177 }
1178
1179 static void sync_clock_to_slave(Clock *c, Clock *slave)
1180 {
1181     double clock = get_clock(c);
1182     double slave_clock = get_clock(slave);
1183     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1184         set_clock(c, slave_clock, slave->serial);
1185 }
1186
1187 static int get_master_sync_type(VideoState *is) {
1188     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1189         if (is->video_st)
1190             return AV_SYNC_VIDEO_MASTER;
1191         else
1192             return AV_SYNC_AUDIO_MASTER;
1193     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1194         if (is->audio_st)
1195             return AV_SYNC_AUDIO_MASTER;
1196         else
1197             return AV_SYNC_EXTERNAL_CLOCK;
1198     } else {
1199         return AV_SYNC_EXTERNAL_CLOCK;
1200     }
1201 }
1202
1203 /* get the current master clock value */
1204 static double get_master_clock(VideoState *is)
1205 {
1206     double val;
1207
1208     switch (get_master_sync_type(is)) {
1209         case AV_SYNC_VIDEO_MASTER:
1210             val = get_clock(&is->vidclk);
1211             break;
1212         case AV_SYNC_AUDIO_MASTER:
1213             val = get_clock(&is->audclk);
1214             break;
1215         default:
1216             val = get_clock(&is->extclk);
1217             break;
1218     }
1219     return val;
1220 }
1221
1222 static void check_external_clock_speed(VideoState *is) {
1223    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1224        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1225        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1226    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1227               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1228        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1229    } else {
1230        double speed = is->extclk.speed;
1231        if (speed != 1.0)
1232            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1233    }
1234 }
1235
1236 /* seek in the stream */
1237 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1238 {
1239     if (!is->seek_req) {
1240         is->seek_pos = pos;
1241         is->seek_rel = rel;
1242         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1243         if (seek_by_bytes)
1244             is->seek_flags |= AVSEEK_FLAG_BYTE;
1245         is->seek_req = 1;
1246         SDL_CondSignal(is->continue_read_thread);
1247     }
1248 }
1249
1250 /* pause or resume the video */
1251 static void stream_toggle_pause(VideoState *is)
1252 {
1253     if (is->paused) {
1254         is->frame_timer += av_gettime_relative() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
1255         if (is->read_pause_return != AVERROR(ENOSYS)) {
1256             is->vidclk.paused = 0;
1257         }
1258         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1259     }
1260     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1261     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1262 }
1263
1264 static void toggle_pause(VideoState *is)
1265 {
1266     stream_toggle_pause(is);
1267     is->step = 0;
1268 }
1269
1270 static void step_to_next_frame(VideoState *is)
1271 {
1272     /* if the stream is paused unpause it, then step */
1273     if (is->paused)
1274         stream_toggle_pause(is);
1275     is->step = 1;
1276 }
1277
1278 static double compute_target_delay(double delay, VideoState *is)
1279 {
1280     double sync_threshold, diff;
1281
1282     /* update delay to follow master synchronisation source */
1283     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1284         /* if video is slave, we try to correct big delays by
1285            duplicating or deleting a frame */
1286         diff = get_clock(&is->vidclk) - get_master_clock(is);
1287
1288         /* skip or repeat frame. We take into account the
1289            delay to compute the threshold. I still don't know
1290            if it is the best guess */
1291         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1292         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1293             if (diff <= -sync_threshold)
1294                 delay = FFMAX(0, delay + diff);
1295             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1296                 delay = delay + diff;
1297             else if (diff >= sync_threshold)
1298                 delay = 2 * delay;
1299         }
1300     }
1301
1302     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1303             delay, -diff);
1304
1305     return delay;
1306 }
1307
1308 static double vp_duration(VideoState *is, VideoPicture *vp, VideoPicture *nextvp) {
1309     if (vp->serial == nextvp->serial) {
1310         double duration = nextvp->pts - vp->pts;
1311         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1312             return vp->duration;
1313         else
1314             return duration;
1315     } else {
1316         return 0.0;
1317     }
1318 }
1319
1320 static void pictq_next_picture(VideoState *is) {
1321     /* update queue size and signal for next picture */
1322     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1323         is->pictq_rindex = 0;
1324
1325     SDL_LockMutex(is->pictq_mutex);
1326     is->pictq_size--;
1327     SDL_CondSignal(is->pictq_cond);
1328     SDL_UnlockMutex(is->pictq_mutex);
1329 }
1330
1331 static int pictq_prev_picture(VideoState *is) {
1332     VideoPicture *prevvp;
1333     int ret = 0;
1334     /* update queue size and signal for the previous picture */
1335     prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1336     if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
1337         SDL_LockMutex(is->pictq_mutex);
1338         if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
1339             if (--is->pictq_rindex == -1)
1340                 is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
1341             is->pictq_size++;
1342             ret = 1;
1343         }
1344         SDL_CondSignal(is->pictq_cond);
1345         SDL_UnlockMutex(is->pictq_mutex);
1346     }
1347     return ret;
1348 }
1349
1350 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1351     /* update current video pts */
1352     set_clock(&is->vidclk, pts, serial);
1353     sync_clock_to_slave(&is->extclk, &is->vidclk);
1354     is->video_current_pos = pos;
1355 }
1356
1357 /* called to display each frame */
1358 static void video_refresh(void *opaque, double *remaining_time)
1359 {
1360     VideoState *is = opaque;
1361     double time;
1362
1363     SubPicture *sp, *sp2;
1364
1365     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1366         check_external_clock_speed(is);
1367
1368     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1369         time = av_gettime_relative() / 1000000.0;
1370         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1371             video_display(is);
1372             is->last_vis_time = time;
1373         }
1374         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1375     }
1376
1377     if (is->video_st) {
1378         int redisplay = 0;
1379         if (is->force_refresh)
1380             redisplay = pictq_prev_picture(is);
1381 retry:
1382         if (is->pictq_size == 0) {
1383             // nothing to do, no picture to display in the queue
1384         } else {
1385             double last_duration, duration, delay;
1386             VideoPicture *vp, *lastvp;
1387
1388             /* dequeue the picture */
1389             vp = &is->pictq[is->pictq_rindex];
1390             lastvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1391
1392             if (vp->serial != is->videoq.serial) {
1393                 pictq_next_picture(is);
1394                 is->video_current_pos = -1;
1395                 redisplay = 0;
1396                 goto retry;
1397             }
1398
1399             if (lastvp->serial != vp->serial && !redisplay)
1400                 is->frame_timer = av_gettime_relative() / 1000000.0;
1401
1402             if (is->paused)
1403                 goto display;
1404
1405             /* compute nominal last_duration */
1406             last_duration = vp_duration(is, lastvp, vp);
1407             if (redisplay)
1408                 delay = 0.0;
1409             else
1410                 delay = compute_target_delay(last_duration, is);
1411
1412             time= av_gettime_relative()/1000000.0;
1413             if (time < is->frame_timer + delay && !redisplay) {
1414                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1415                 return;
1416             }
1417
1418             is->frame_timer += delay;
1419             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1420                 is->frame_timer = time;
1421
1422             SDL_LockMutex(is->pictq_mutex);
1423             if (!redisplay && !isnan(vp->pts))
1424                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1425             SDL_UnlockMutex(is->pictq_mutex);
1426
1427             if (is->pictq_size > 1) {
1428                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1429                 duration = vp_duration(is, vp, nextvp);
1430                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1431                     if (!redisplay)
1432                         is->frame_drops_late++;
1433                     pictq_next_picture(is);
1434                     redisplay = 0;
1435                     goto retry;
1436                 }
1437             }
1438
1439             if (is->subtitle_st) {
1440                     while (is->subpq_size > 0) {
1441                         sp = &is->subpq[is->subpq_rindex];
1442
1443                         if (is->subpq_size > 1)
1444                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1445                         else
1446                             sp2 = NULL;
1447
1448                         if (sp->serial != is->subtitleq.serial
1449                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1450                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1451                         {
1452                             free_subpicture(sp);
1453
1454                             /* update queue size and signal for next picture */
1455                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1456                                 is->subpq_rindex = 0;
1457
1458                             SDL_LockMutex(is->subpq_mutex);
1459                             is->subpq_size--;
1460                             SDL_CondSignal(is->subpq_cond);
1461                             SDL_UnlockMutex(is->subpq_mutex);
1462                         } else {
1463                             break;
1464                         }
1465                     }
1466             }
1467
1468 display:
1469             /* display picture */
1470             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1471                 video_display(is);
1472
1473             pictq_next_picture(is);
1474
1475             if (is->step && !is->paused)
1476                 stream_toggle_pause(is);
1477         }
1478     }
1479     is->force_refresh = 0;
1480     if (show_status) {
1481         static int64_t last_time;
1482         int64_t cur_time;
1483         int aqsize, vqsize, sqsize;
1484         double av_diff;
1485
1486         cur_time = av_gettime_relative();
1487         if (!last_time || (cur_time - last_time) >= 30000) {
1488             aqsize = 0;
1489             vqsize = 0;
1490             sqsize = 0;
1491             if (is->audio_st)
1492                 aqsize = is->audioq.size;
1493             if (is->video_st)
1494                 vqsize = is->videoq.size;
1495             if (is->subtitle_st)
1496                 sqsize = is->subtitleq.size;
1497             av_diff = 0;
1498             if (is->audio_st && is->video_st)
1499                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1500             else if (is->video_st)
1501                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1502             else if (is->audio_st)
1503                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1504             av_log(NULL, AV_LOG_INFO,
1505                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1506                    get_master_clock(is),
1507                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1508                    av_diff,
1509                    is->frame_drops_early + is->frame_drops_late,
1510                    aqsize / 1024,
1511                    vqsize / 1024,
1512                    sqsize,
1513                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1514                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1515             fflush(stdout);
1516             last_time = cur_time;
1517         }
1518     }
1519 }
1520
1521 /* allocate a picture (needs to do that in main thread to avoid
1522    potential locking problems */
1523 static void alloc_picture(VideoState *is)
1524 {
1525     VideoPicture *vp;
1526     int64_t bufferdiff;
1527
1528     vp = &is->pictq[is->pictq_windex];
1529
1530     free_picture(vp);
1531
1532     video_open(is, 0, vp);
1533
1534     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1535                                    SDL_YV12_OVERLAY,
1536                                    screen);
1537     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1538     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1539         /* SDL allocates a buffer smaller than requested if the video
1540          * overlay hardware is unable to support the requested size. */
1541         av_log(NULL, AV_LOG_FATAL,
1542                "Error: the video system does not support an image\n"
1543                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1544                         "to reduce the image size.\n", vp->width, vp->height );
1545         do_exit(is);
1546     }
1547
1548     SDL_LockMutex(is->pictq_mutex);
1549     vp->allocated = 1;
1550     SDL_CondSignal(is->pictq_cond);
1551     SDL_UnlockMutex(is->pictq_mutex);
1552 }
1553
1554 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1555     int i, width, height;
1556     Uint8 *p, *maxp;
1557     for (i = 0; i < 3; i++) {
1558         width  = bmp->w;
1559         height = bmp->h;
1560         if (i > 0) {
1561             width  >>= 1;
1562             height >>= 1;
1563         }
1564         if (bmp->pitches[i] > width) {
1565             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1566             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1567                 *(p+1) = *p;
1568         }
1569     }
1570 }
1571
1572 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1573 {
1574     VideoPicture *vp;
1575
1576 #if defined(DEBUG_SYNC) && 0
1577     printf("frame_type=%c pts=%0.3f\n",
1578            av_get_picture_type_char(src_frame->pict_type), pts);
1579 #endif
1580
1581     /* wait until we have space to put a new picture */
1582     SDL_LockMutex(is->pictq_mutex);
1583
1584     /* keep the last already displayed picture in the queue */
1585     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
1586            !is->videoq.abort_request) {
1587         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1588     }
1589     SDL_UnlockMutex(is->pictq_mutex);
1590
1591     if (is->videoq.abort_request)
1592         return -1;
1593
1594     vp = &is->pictq[is->pictq_windex];
1595
1596     vp->sar = src_frame->sample_aspect_ratio;
1597
1598     /* alloc or resize hardware picture buffer */
1599     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1600         vp->width  != src_frame->width ||
1601         vp->height != src_frame->height) {
1602         SDL_Event event;
1603
1604         vp->allocated  = 0;
1605         vp->reallocate = 0;
1606         vp->width = src_frame->width;
1607         vp->height = src_frame->height;
1608
1609         /* the allocation must be done in the main thread to avoid
1610            locking problems. */
1611         event.type = FF_ALLOC_EVENT;
1612         event.user.data1 = is;
1613         SDL_PushEvent(&event);
1614
1615         /* wait until the picture is allocated */
1616         SDL_LockMutex(is->pictq_mutex);
1617         while (!vp->allocated && !is->videoq.abort_request) {
1618             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1619         }
1620         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1621         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1622             while (!vp->allocated && !is->abort_request) {
1623                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1624             }
1625         }
1626         SDL_UnlockMutex(is->pictq_mutex);
1627
1628         if (is->videoq.abort_request)
1629             return -1;
1630     }
1631
1632     /* if the frame is not skipped, then display it */
1633     if (vp->bmp) {
1634         AVPicture pict = { { 0 } };
1635
1636         /* get a pointer on the bitmap */
1637         SDL_LockYUVOverlay (vp->bmp);
1638
1639         pict.data[0] = vp->bmp->pixels[0];
1640         pict.data[1] = vp->bmp->pixels[2];
1641         pict.data[2] = vp->bmp->pixels[1];
1642
1643         pict.linesize[0] = vp->bmp->pitches[0];
1644         pict.linesize[1] = vp->bmp->pitches[2];
1645         pict.linesize[2] = vp->bmp->pitches[1];
1646
1647 #if CONFIG_AVFILTER
1648         // FIXME use direct rendering
1649         av_picture_copy(&pict, (AVPicture *)src_frame,
1650                         src_frame->format, vp->width, vp->height);
1651 #else
1652         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1653         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1654             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1655             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1656         if (is->img_convert_ctx == NULL) {
1657             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1658             exit(1);
1659         }
1660         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1661                   0, vp->height, pict.data, pict.linesize);
1662 #endif
1663         /* workaround SDL PITCH_WORKAROUND */
1664         duplicate_right_border_pixels(vp->bmp);
1665         /* update the bitmap content */
1666         SDL_UnlockYUVOverlay(vp->bmp);
1667
1668         vp->pts = pts;
1669         vp->duration = duration;
1670         vp->pos = pos;
1671         vp->serial = serial;
1672
1673         /* now we can update the picture count */
1674         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1675             is->pictq_windex = 0;
1676         SDL_LockMutex(is->pictq_mutex);
1677         is->pictq_size++;
1678         SDL_UnlockMutex(is->pictq_mutex);
1679     }
1680     return 0;
1681 }
1682
1683 static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *serial)
1684 {
1685     int got_picture;
1686
1687     if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
1688         return -1;
1689
1690     if (pkt->data == flush_pkt.data) {
1691         avcodec_flush_buffers(is->video_st->codec);
1692         return 0;
1693     }
1694
1695     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1696         return 0;
1697
1698     if (!got_picture && !pkt->data)
1699         is->video_finished = *serial;
1700
1701     if (got_picture) {
1702         int ret = 1;
1703         double dpts = NAN;
1704
1705         if (decoder_reorder_pts == -1) {
1706             frame->pts = av_frame_get_best_effort_timestamp(frame);
1707         } else if (decoder_reorder_pts) {
1708             frame->pts = frame->pkt_pts;
1709         } else {
1710             frame->pts = frame->pkt_dts;
1711         }
1712
1713         if (frame->pts != AV_NOPTS_VALUE)
1714             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1715
1716         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1717
1718         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1719             if (frame->pts != AV_NOPTS_VALUE) {
1720                 double diff = dpts - get_master_clock(is);
1721                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1722                     diff - is->frame_last_filter_delay < 0 &&
1723                     *serial == is->vidclk.serial &&
1724                     is->videoq.nb_packets) {
1725                     is->frame_drops_early++;
1726                     av_frame_unref(frame);
1727                     ret = 0;
1728                 }
1729             }
1730         }
1731
1732         return ret;
1733     }
1734     return 0;
1735 }
1736
1737 #if CONFIG_AVFILTER
1738 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1739                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1740 {
1741     int ret, i;
1742     int nb_filters = graph->nb_filters;
1743     AVFilterInOut *outputs = NULL, *inputs = NULL;
1744
1745     if (filtergraph) {
1746         outputs = avfilter_inout_alloc();
1747         inputs  = avfilter_inout_alloc();
1748         if (!outputs || !inputs) {
1749             ret = AVERROR(ENOMEM);
1750             goto fail;
1751         }
1752
1753         outputs->name       = av_strdup("in");
1754         outputs->filter_ctx = source_ctx;
1755         outputs->pad_idx    = 0;
1756         outputs->next       = NULL;
1757
1758         inputs->name        = av_strdup("out");
1759         inputs->filter_ctx  = sink_ctx;
1760         inputs->pad_idx     = 0;
1761         inputs->next        = NULL;
1762
1763         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1764             goto fail;
1765     } else {
1766         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1767             goto fail;
1768     }
1769
1770     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1771     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1772         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1773
1774     ret = avfilter_graph_config(graph, NULL);
1775 fail:
1776     avfilter_inout_free(&outputs);
1777     avfilter_inout_free(&inputs);
1778     return ret;
1779 }
1780
1781 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1782 {
1783     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1784     char sws_flags_str[128];
1785     char buffersrc_args[256];
1786     int ret;
1787     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1788     AVCodecContext *codec = is->video_st->codec;
1789     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1790
1791     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1792     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1793     graph->scale_sws_opts = av_strdup(sws_flags_str);
1794
1795     snprintf(buffersrc_args, sizeof(buffersrc_args),
1796              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1797              frame->width, frame->height, frame->format,
1798              is->video_st->time_base.num, is->video_st->time_base.den,
1799              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1800     if (fr.num && fr.den)
1801         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1802
1803     if ((ret = avfilter_graph_create_filter(&filt_src,
1804                                             avfilter_get_by_name("buffer"),
1805                                             "ffplay_buffer", buffersrc_args, NULL,
1806                                             graph)) < 0)
1807         goto fail;
1808
1809     ret = avfilter_graph_create_filter(&filt_out,
1810                                        avfilter_get_by_name("buffersink"),
1811                                        "ffplay_buffersink", NULL, NULL, graph);
1812     if (ret < 0)
1813         goto fail;
1814
1815     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1816         goto fail;
1817
1818     last_filter = filt_out;
1819
1820 /* Note: this macro adds a filter before the lastly added filter, so the
1821  * processing order of the filters is in reverse */
1822 #define INSERT_FILT(name, arg) do {                                         \
1823     AVFilterContext *filt_ctx;                                              \
1824                                                                             \
1825     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1826                                        avfilter_get_by_name(name),          \
1827                                        "ffplay_" name, arg, NULL, graph);   \
1828     if (ret < 0)                                                            \
1829         goto fail;                                                          \
1830                                                                             \
1831     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                       \
1832     if (ret < 0)                                                            \
1833         goto fail;                                                          \
1834                                                                             \
1835     last_filter = filt_ctx;                                                 \
1836 } while (0)
1837
1838     /* SDL YUV code is not handling odd width/height for some driver
1839      * combinations, therefore we crop the picture to an even width/height. */
1840     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
1841
1842     if (autorotate) {
1843         AVDictionaryEntry *rotate_tag = av_dict_get(is->video_st->metadata, "rotate", NULL, 0);
1844         if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
1845             if (!strcmp(rotate_tag->value, "90")) {
1846                 INSERT_FILT("transpose", "clock");
1847             } else if (!strcmp(rotate_tag->value, "180")) {
1848                 INSERT_FILT("hflip", NULL);
1849                 INSERT_FILT("vflip", NULL);
1850             } else if (!strcmp(rotate_tag->value, "270")) {
1851                 INSERT_FILT("transpose", "cclock");
1852             } else {
1853                 char rotate_buf[64];
1854                 snprintf(rotate_buf, sizeof(rotate_buf), "%s*PI/180", rotate_tag->value);
1855                 INSERT_FILT("rotate", rotate_buf);
1856             }
1857         }
1858     }
1859
1860     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1861         goto fail;
1862
1863     is->in_video_filter  = filt_src;
1864     is->out_video_filter = filt_out;
1865
1866 fail:
1867     return ret;
1868 }
1869
1870 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1871 {
1872     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1873     int sample_rates[2] = { 0, -1 };
1874     int64_t channel_layouts[2] = { 0, -1 };
1875     int channels[2] = { 0, -1 };
1876     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1877     char aresample_swr_opts[512] = "";
1878     AVDictionaryEntry *e = NULL;
1879     char asrc_args[256];
1880     int ret;
1881
1882     avfilter_graph_free(&is->agraph);
1883     if (!(is->agraph = avfilter_graph_alloc()))
1884         return AVERROR(ENOMEM);
1885
1886     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1887         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1888     if (strlen(aresample_swr_opts))
1889         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1890     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1891
1892     ret = snprintf(asrc_args, sizeof(asrc_args),
1893                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1894                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1895                    is->audio_filter_src.channels,
1896                    1, is->audio_filter_src.freq);
1897     if (is->audio_filter_src.channel_layout)
1898         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1899                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1900
1901     ret = avfilter_graph_create_filter(&filt_asrc,
1902                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1903                                        asrc_args, NULL, is->agraph);
1904     if (ret < 0)
1905         goto end;
1906
1907
1908     ret = avfilter_graph_create_filter(&filt_asink,
1909                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1910                                        NULL, NULL, is->agraph);
1911     if (ret < 0)
1912         goto end;
1913
1914     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1915         goto end;
1916     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1917         goto end;
1918
1919     if (force_output_format) {
1920         channel_layouts[0] = is->audio_tgt.channel_layout;
1921         channels       [0] = is->audio_tgt.channels;
1922         sample_rates   [0] = is->audio_tgt.freq;
1923         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1924             goto end;
1925         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1926             goto end;
1927         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1928             goto end;
1929         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1930             goto end;
1931     }
1932
1933
1934     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
1935         goto end;
1936
1937     is->in_audio_filter  = filt_asrc;
1938     is->out_audio_filter = filt_asink;
1939
1940 end:
1941     if (ret < 0)
1942         avfilter_graph_free(&is->agraph);
1943     return ret;
1944 }
1945 #endif  /* CONFIG_AVFILTER */
1946
1947 static int video_thread(void *arg)
1948 {
1949     AVPacket pkt = { 0 };
1950     VideoState *is = arg;
1951     AVFrame *frame = av_frame_alloc();
1952     double pts;
1953     double duration;
1954     int ret;
1955     int serial = 0;
1956     AVRational tb = is->video_st->time_base;
1957     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
1958
1959 #if CONFIG_AVFILTER
1960     AVFilterGraph *graph = avfilter_graph_alloc();
1961     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1962     int last_w = 0;
1963     int last_h = 0;
1964     enum AVPixelFormat last_format = -2;
1965     int last_serial = -1;
1966     int last_vfilter_idx = 0;
1967 #endif
1968
1969     for (;;) {
1970         while (is->paused && !is->videoq.abort_request)
1971             SDL_Delay(10);
1972
1973         av_free_packet(&pkt);
1974
1975         ret = get_video_frame(is, frame, &pkt, &serial);
1976         if (ret < 0)
1977             goto the_end;
1978         if (!ret)
1979             continue;
1980
1981 #if CONFIG_AVFILTER
1982         if (   last_w != frame->width
1983             || last_h != frame->height
1984             || last_format != frame->format
1985             || last_serial != serial
1986             || last_vfilter_idx != is->vfilter_idx) {
1987             av_log(NULL, AV_LOG_DEBUG,
1988                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
1989                    last_w, last_h,
1990                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
1991                    frame->width, frame->height,
1992                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
1993             avfilter_graph_free(&graph);
1994             graph = avfilter_graph_alloc();
1995             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
1996                 SDL_Event event;
1997                 event.type = FF_QUIT_EVENT;
1998                 event.user.data1 = is;
1999                 SDL_PushEvent(&event);
2000                 goto the_end;
2001             }
2002             filt_in  = is->in_video_filter;
2003             filt_out = is->out_video_filter;
2004             last_w = frame->width;
2005             last_h = frame->height;
2006             last_format = frame->format;
2007             last_serial = serial;
2008             last_vfilter_idx = is->vfilter_idx;
2009             frame_rate = filt_out->inputs[0]->frame_rate;
2010         }
2011
2012         ret = av_buffersrc_add_frame(filt_in, frame);
2013         if (ret < 0)
2014             goto the_end;
2015
2016         while (ret >= 0) {
2017             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2018
2019             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2020             if (ret < 0) {
2021                 if (ret == AVERROR_EOF)
2022                     is->video_finished = serial;
2023                 ret = 0;
2024                 break;
2025             }
2026
2027             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2028             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2029                 is->frame_last_filter_delay = 0;
2030             tb = filt_out->inputs[0]->time_base;
2031 #endif
2032             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2033             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2034             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), serial);
2035             av_frame_unref(frame);
2036 #if CONFIG_AVFILTER
2037         }
2038 #endif
2039
2040         if (ret < 0)
2041             goto the_end;
2042     }
2043  the_end:
2044 #if CONFIG_AVFILTER
2045     avfilter_graph_free(&graph);
2046 #endif
2047     av_free_packet(&pkt);
2048     av_frame_free(&frame);
2049     return 0;
2050 }
2051
2052 static int subtitle_thread(void *arg)
2053 {
2054     VideoState *is = arg;
2055     SubPicture *sp;
2056     AVPacket pkt1, *pkt = &pkt1;
2057     int got_subtitle;
2058     int serial;
2059     double pts;
2060     int i, j;
2061     int r, g, b, y, u, v, a;
2062
2063     for (;;) {
2064         while (is->paused && !is->subtitleq.abort_request) {
2065             SDL_Delay(10);
2066         }
2067         if (packet_queue_get(&is->subtitleq, pkt, 1, &serial) < 0)
2068             break;
2069
2070         if (pkt->data == flush_pkt.data) {
2071             avcodec_flush_buffers(is->subtitle_st->codec);
2072             continue;
2073         }
2074         SDL_LockMutex(is->subpq_mutex);
2075         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
2076                !is->subtitleq.abort_request) {
2077             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
2078         }
2079         SDL_UnlockMutex(is->subpq_mutex);
2080
2081         if (is->subtitleq.abort_request)
2082             return 0;
2083
2084         sp = &is->subpq[is->subpq_windex];
2085
2086        /* NOTE: ipts is the PTS of the _first_ picture beginning in
2087            this packet, if any */
2088         pts = 0;
2089         if (pkt->pts != AV_NOPTS_VALUE)
2090             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
2091
2092         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
2093                                  &got_subtitle, pkt);
2094         if (got_subtitle && sp->sub.format == 0) {
2095             if (sp->sub.pts != AV_NOPTS_VALUE)
2096                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2097             sp->pts = pts;
2098             sp->serial = serial;
2099
2100             for (i = 0; i < sp->sub.num_rects; i++)
2101             {
2102                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2103                 {
2104                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2105                     y = RGB_TO_Y_CCIR(r, g, b);
2106                     u = RGB_TO_U_CCIR(r, g, b, 0);
2107                     v = RGB_TO_V_CCIR(r, g, b, 0);
2108                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2109                 }
2110             }
2111
2112             /* now we can update the picture count */
2113             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
2114                 is->subpq_windex = 0;
2115             SDL_LockMutex(is->subpq_mutex);
2116             is->subpq_size++;
2117             SDL_UnlockMutex(is->subpq_mutex);
2118         } else if (got_subtitle) {
2119             avsubtitle_free(&sp->sub);
2120         }
2121         av_free_packet(pkt);
2122     }
2123     return 0;
2124 }
2125
2126 /* copy samples for viewing in editor window */
2127 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2128 {
2129     int size, len;
2130
2131     size = samples_size / sizeof(short);
2132     while (size > 0) {
2133         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2134         if (len > size)
2135             len = size;
2136         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2137         samples += len;
2138         is->sample_array_index += len;
2139         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2140             is->sample_array_index = 0;
2141         size -= len;
2142     }
2143 }
2144
2145 /* return the wanted number of samples to get better sync if sync_type is video
2146  * or external master clock */
2147 static int synchronize_audio(VideoState *is, int nb_samples)
2148 {
2149     int wanted_nb_samples = nb_samples;
2150
2151     /* if not master, then we try to remove or add samples to correct the clock */
2152     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2153         double diff, avg_diff;
2154         int min_nb_samples, max_nb_samples;
2155
2156         diff = get_clock(&is->audclk) - get_master_clock(is);
2157
2158         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2159             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2160             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2161                 /* not enough measures to have a correct estimate */
2162                 is->audio_diff_avg_count++;
2163             } else {
2164                 /* estimate the A-V difference */
2165                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2166
2167                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2168                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2169                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2170                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2171                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2172                 }
2173                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2174                         diff, avg_diff, wanted_nb_samples - nb_samples,
2175                         is->audio_clock, is->audio_diff_threshold);
2176             }
2177         } else {
2178             /* too big difference : may be initial PTS errors, so
2179                reset A-V filter */
2180             is->audio_diff_avg_count = 0;
2181             is->audio_diff_cum       = 0;
2182         }
2183     }
2184
2185     return wanted_nb_samples;
2186 }
2187
2188 /**
2189  * Decode one audio frame and return its uncompressed size.
2190  *
2191  * The processed audio frame is decoded, converted if required, and
2192  * stored in is->audio_buf, with size in bytes given by the return
2193  * value.
2194  */
2195 static int audio_decode_frame(VideoState *is)
2196 {
2197     AVPacket *pkt_temp = &is->audio_pkt_temp;
2198     AVPacket *pkt = &is->audio_pkt;
2199     AVCodecContext *dec = is->audio_st->codec;
2200     int len1, data_size, resampled_data_size;
2201     int64_t dec_channel_layout;
2202     int got_frame;
2203     av_unused double audio_clock0;
2204     int wanted_nb_samples;
2205     AVRational tb;
2206     int ret;
2207     int reconfigure;
2208
2209     for (;;) {
2210         /* NOTE: the audio packet can contain several frames */
2211         while (pkt_temp->stream_index != -1 || is->audio_buf_frames_pending) {
2212             if (!is->frame) {
2213                 if (!(is->frame = av_frame_alloc()))
2214                     return AVERROR(ENOMEM);
2215             } else {
2216                 av_frame_unref(is->frame);
2217             }
2218
2219             if (is->audioq.serial != is->audio_pkt_temp_serial)
2220                 break;
2221
2222             if (is->paused)
2223                 return -1;
2224
2225             if (!is->audio_buf_frames_pending) {
2226                 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
2227                 if (len1 < 0) {
2228                     /* if error, we skip the frame */
2229                     pkt_temp->size = 0;
2230                     break;
2231                 }
2232
2233                 pkt_temp->dts =
2234                 pkt_temp->pts = AV_NOPTS_VALUE;
2235                 pkt_temp->data += len1;
2236                 pkt_temp->size -= len1;
2237                 if (pkt_temp->data && pkt_temp->size <= 0 || !pkt_temp->data && !got_frame)
2238                     pkt_temp->stream_index = -1;
2239                 if (!pkt_temp->data && !got_frame)
2240                     is->audio_finished = is->audio_pkt_temp_serial;
2241
2242                 if (!got_frame)
2243                     continue;
2244
2245                 tb = (AVRational){1, is->frame->sample_rate};
2246                 if (is->frame->pts != AV_NOPTS_VALUE)
2247                     is->frame->pts = av_rescale_q(is->frame->pts, dec->time_base, tb);
2248                 else if (is->frame->pkt_pts != AV_NOPTS_VALUE)
2249                     is->frame->pts = av_rescale_q(is->frame->pkt_pts, is->audio_st->time_base, tb);
2250                 else if (is->audio_frame_next_pts != AV_NOPTS_VALUE)
2251 #if CONFIG_AVFILTER
2252                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_filter_src.freq}, tb);
2253 #else
2254                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_src.freq}, tb);
2255 #endif
2256
2257                 if (is->frame->pts != AV_NOPTS_VALUE)
2258                     is->audio_frame_next_pts = is->frame->pts + is->frame->nb_samples;
2259
2260 #if CONFIG_AVFILTER
2261                 dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));
2262
2263                 reconfigure =
2264                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2265                                    is->frame->format, av_frame_get_channels(is->frame))    ||
2266                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2267                     is->audio_filter_src.freq           != is->frame->sample_rate ||
2268                     is->audio_pkt_temp_serial           != is->audio_last_serial;
2269
2270                 if (reconfigure) {
2271                     char buf1[1024], buf2[1024];
2272                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2273                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2274                     av_log(NULL, AV_LOG_DEBUG,
2275                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2276                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, is->audio_last_serial,
2277                            is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->audio_pkt_temp_serial);
2278
2279                     is->audio_filter_src.fmt            = is->frame->format;
2280                     is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
2281                     is->audio_filter_src.channel_layout = dec_channel_layout;
2282                     is->audio_filter_src.freq           = is->frame->sample_rate;
2283                     is->audio_last_serial               = is->audio_pkt_temp_serial;
2284
2285                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2286                         return ret;
2287                 }
2288
2289                 if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
2290                     return ret;
2291 #endif
2292             }
2293 #if CONFIG_AVFILTER
2294             if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
2295                 if (ret == AVERROR(EAGAIN)) {
2296                     is->audio_buf_frames_pending = 0;
2297                     continue;
2298                 }
2299                 if (ret == AVERROR_EOF)
2300                     is->audio_finished = is->audio_pkt_temp_serial;
2301                 return ret;
2302             }
2303             is->audio_buf_frames_pending = 1;
2304             tb = is->out_audio_filter->inputs[0]->time_base;
2305 #endif
2306
2307             data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
2308                                                    is->frame->nb_samples,
2309                                                    is->frame->format, 1);
2310
2311             dec_channel_layout =
2312                 (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
2313                 is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
2314             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
2315
2316             if (is->frame->format        != is->audio_src.fmt            ||
2317                 dec_channel_layout       != is->audio_src.channel_layout ||
2318                 is->frame->sample_rate   != is->audio_src.freq           ||
2319                 (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
2320                 swr_free(&is->swr_ctx);
2321                 is->swr_ctx = swr_alloc_set_opts(NULL,
2322                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2323                                                  dec_channel_layout,           is->frame->format, is->frame->sample_rate,
2324                                                  0, NULL);
2325                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2326                     av_log(NULL, AV_LOG_ERROR,
2327                            "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2328                             is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
2329                             is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2330                     break;
2331                 }
2332                 is->audio_src.channel_layout = dec_channel_layout;
2333                 is->audio_src.channels       = av_frame_get_channels(is->frame);
2334                 is->audio_src.freq = is->frame->sample_rate;
2335                 is->audio_src.fmt = is->frame->format;
2336             }
2337
2338             if (is->swr_ctx) {
2339                 const uint8_t **in = (const uint8_t **)is->frame->extended_data;
2340                 uint8_t **out = &is->audio_buf1;
2341                 int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
2342                 int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2343                 int len2;
2344                 if (out_size < 0) {
2345                     av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2346                     break;
2347                 }
2348                 if (wanted_nb_samples != is->frame->nb_samples) {
2349                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
2350                                                 wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
2351                         av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2352                         break;
2353                     }
2354                 }
2355                 av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2356                 if (!is->audio_buf1)
2357                     return AVERROR(ENOMEM);
2358                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
2359                 if (len2 < 0) {
2360                     av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2361                     break;
2362                 }
2363                 if (len2 == out_count) {
2364                     av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2365                     swr_init(is->swr_ctx);
2366                 }
2367                 is->audio_buf = is->audio_buf1;
2368                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2369             } else {
2370                 is->audio_buf = is->frame->data[0];
2371                 resampled_data_size = data_size;
2372             }
2373
2374             audio_clock0 = is->audio_clock;
2375             /* update the audio clock with the pts */
2376             if (is->frame->pts != AV_NOPTS_VALUE)
2377                 is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
2378             else
2379                 is->audio_clock = NAN;
2380             is->audio_clock_serial = is->audio_pkt_temp_serial;
2381 #ifdef DEBUG
2382             {
2383                 static double last_clock;
2384                 printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2385                        is->audio_clock - last_clock,
2386                        is->audio_clock, audio_clock0);
2387                 last_clock = is->audio_clock;
2388             }
2389 #endif
2390             return resampled_data_size;
2391         }
2392
2393         /* free the current packet */
2394         if (pkt->data)
2395             av_free_packet(pkt);
2396         memset(pkt_temp, 0, sizeof(*pkt_temp));
2397         pkt_temp->stream_index = -1;
2398
2399         if (is->audioq.abort_request) {
2400             return -1;
2401         }
2402
2403         if (is->audioq.nb_packets == 0)
2404             SDL_CondSignal(is->continue_read_thread);
2405
2406         /* read next packet */
2407         if ((packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
2408             return -1;
2409
2410         if (pkt->data == flush_pkt.data) {
2411             avcodec_flush_buffers(dec);
2412             is->audio_buf_frames_pending = 0;
2413             is->audio_frame_next_pts = AV_NOPTS_VALUE;
2414             if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek)
2415                 is->audio_frame_next_pts = is->audio_st->start_time;
2416         }
2417
2418         *pkt_temp = *pkt;
2419     }
2420 }
2421
2422 /* prepare a new audio buffer */
2423 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2424 {
2425     VideoState *is = opaque;
2426     int audio_size, len1;
2427
2428     audio_callback_time = av_gettime_relative();
2429
2430     while (len > 0) {
2431         if (is->audio_buf_index >= is->audio_buf_size) {
2432            audio_size = audio_decode_frame(is);
2433            if (audio_size < 0) {
2434                 /* if error, just output silence */
2435                is->audio_buf      = is->silence_buf;
2436                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2437            } else {
2438                if (is->show_mode != SHOW_MODE_VIDEO)
2439                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2440                is->audio_buf_size = audio_size;
2441            }
2442            is->audio_buf_index = 0;
2443         }
2444         len1 = is->audio_buf_size - is->audio_buf_index;
2445         if (len1 > len)
2446             len1 = len;
2447         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2448         len -= len1;
2449         stream += len1;
2450         is->audio_buf_index += len1;
2451     }
2452     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2453     /* Let's assume the audio driver that is used by SDL has two periods. */
2454     if (!isnan(is->audio_clock)) {
2455         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2456         sync_clock_to_slave(&is->extclk, &is->audclk);
2457     }
2458 }
2459
2460 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2461 {
2462     SDL_AudioSpec wanted_spec, spec;
2463     const char *env;
2464     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2465     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2466     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2467
2468     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2469     if (env) {
2470         wanted_nb_channels = atoi(env);
2471         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2472     }
2473     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2474         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2475         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2476     }
2477     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2478     wanted_spec.channels = wanted_nb_channels;
2479     wanted_spec.freq = wanted_sample_rate;
2480     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2481         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2482         return -1;
2483     }
2484     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2485         next_sample_rate_idx--;
2486     wanted_spec.format = AUDIO_S16SYS;
2487     wanted_spec.silence = 0;
2488     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2489     wanted_spec.callback = sdl_audio_callback;
2490     wanted_spec.userdata = opaque;
2491     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2492         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2493                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2494         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2495         if (!wanted_spec.channels) {
2496             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2497             wanted_spec.channels = wanted_nb_channels;
2498             if (!wanted_spec.freq) {
2499                 av_log(NULL, AV_LOG_ERROR,
2500                        "No more combinations to try, audio open failed\n");
2501                 return -1;
2502             }
2503         }
2504         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2505     }
2506     if (spec.format != AUDIO_S16SYS) {
2507         av_log(NULL, AV_LOG_ERROR,
2508                "SDL advised audio format %d is not supported!\n", spec.format);
2509         return -1;
2510     }
2511     if (spec.channels != wanted_spec.channels) {
2512         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2513         if (!wanted_channel_layout) {
2514             av_log(NULL, AV_LOG_ERROR,
2515                    "SDL advised channel count %d is not supported!\n", spec.channels);
2516             return -1;
2517         }
2518     }
2519
2520     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2521     audio_hw_params->freq = spec.freq;
2522     audio_hw_params->channel_layout = wanted_channel_layout;
2523     audio_hw_params->channels =  spec.channels;
2524     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2525     audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2526     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2527         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2528         return -1;
2529     }
2530     return spec.size;
2531 }
2532
2533 /* open a given stream. Return 0 if OK */
2534 static int stream_component_open(VideoState *is, int stream_index)
2535 {
2536     AVFormatContext *ic = is->ic;
2537     AVCodecContext *avctx;
2538     AVCodec *codec;
2539     const char *forced_codec_name = NULL;
2540     AVDictionary *opts;
2541     AVDictionaryEntry *t = NULL;
2542     int sample_rate, nb_channels;
2543     int64_t channel_layout;
2544     int ret;
2545     int stream_lowres = lowres;
2546
2547     if (stream_index < 0 || stream_index >= ic->nb_streams)
2548         return -1;
2549     avctx = ic->streams[stream_index]->codec;
2550
2551     codec = avcodec_find_decoder(avctx->codec_id);
2552
2553     switch(avctx->codec_type){
2554         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2555         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2556         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2557     }
2558     if (forced_codec_name)
2559         codec = avcodec_find_decoder_by_name(forced_codec_name);
2560     if (!codec) {
2561         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2562                                       "No codec could be found with name '%s'\n", forced_codec_name);
2563         else                   av_log(NULL, AV_LOG_WARNING,
2564                                       "No codec could be found with id %d\n", avctx->codec_id);
2565         return -1;
2566     }
2567
2568     avctx->codec_id = codec->id;
2569     avctx->workaround_bugs   = workaround_bugs;
2570     if(stream_lowres > av_codec_get_max_lowres(codec)){
2571         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2572                 av_codec_get_max_lowres(codec));
2573         stream_lowres = av_codec_get_max_lowres(codec);
2574     }
2575     av_codec_set_lowres(avctx, stream_lowres);
2576
2577     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2578     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2579     if(codec->capabilities & CODEC_CAP_DR1)
2580         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2581
2582     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2583     if (!av_dict_get(opts, "threads", NULL, 0))
2584         av_dict_set(&opts, "threads", "auto", 0);
2585     if (stream_lowres)
2586         av_dict_set(&opts, "lowres", av_asprintf("%d", stream_lowres), AV_DICT_DONT_STRDUP_VAL);
2587     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2588         av_dict_set(&opts, "refcounted_frames", "1", 0);
2589     if (avcodec_open2(avctx, codec, &opts) < 0)
2590         return -1;
2591     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2592         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2593         return AVERROR_OPTION_NOT_FOUND;
2594     }
2595
2596     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2597     switch (avctx->codec_type) {
2598     case AVMEDIA_TYPE_AUDIO:
2599 #if CONFIG_AVFILTER
2600         {
2601             AVFilterLink *link;
2602
2603             is->audio_filter_src.freq           = avctx->sample_rate;
2604             is->audio_filter_src.channels       = avctx->channels;
2605             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2606             is->audio_filter_src.fmt            = avctx->sample_fmt;
2607             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2608                 return ret;
2609             link = is->out_audio_filter->inputs[0];
2610             sample_rate    = link->sample_rate;
2611             nb_channels    = link->channels;
2612             channel_layout = link->channel_layout;
2613         }
2614 #else
2615         sample_rate    = avctx->sample_rate;
2616         nb_channels    = avctx->channels;
2617         channel_layout = avctx->channel_layout;
2618 #endif
2619
2620         /* prepare audio output */
2621         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2622             return ret;
2623         is->audio_hw_buf_size = ret;
2624         is->audio_src = is->audio_tgt;
2625         is->audio_buf_size  = 0;
2626         is->audio_buf_index = 0;
2627
2628         /* init averaging filter */
2629         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2630         is->audio_diff_avg_count = 0;
2631         /* since we do not have a precise anough audio fifo fullness,
2632            we correct audio sync only if larger than this threshold */
2633         is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec;
2634
2635         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2636         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2637         is->audio_pkt_temp.stream_index = -1;
2638
2639         is->audio_stream = stream_index;
2640         is->audio_st = ic->streams[stream_index];
2641
2642         packet_queue_start(&is->audioq);
2643         SDL_PauseAudio(0);
2644         break;
2645     case AVMEDIA_TYPE_VIDEO:
2646         is->video_stream = stream_index;
2647         is->video_st = ic->streams[stream_index];
2648
2649         packet_queue_start(&is->videoq);
2650         is->video_tid = SDL_CreateThread(video_thread, is);
2651         is->queue_attachments_req = 1;
2652         break;
2653     case AVMEDIA_TYPE_SUBTITLE:
2654         is->subtitle_stream = stream_index;
2655         is->subtitle_st = ic->streams[stream_index];
2656         packet_queue_start(&is->subtitleq);
2657
2658         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2659         break;
2660     default:
2661         break;
2662     }
2663     return 0;
2664 }
2665
2666 static void stream_component_close(VideoState *is, int stream_index)
2667 {
2668     AVFormatContext *ic = is->ic;
2669     AVCodecContext *avctx;
2670
2671     if (stream_index < 0 || stream_index >= ic->nb_streams)
2672         return;
2673     avctx = ic->streams[stream_index]->codec;
2674
2675     switch (avctx->codec_type) {
2676     case AVMEDIA_TYPE_AUDIO:
2677         packet_queue_abort(&is->audioq);
2678
2679         SDL_CloseAudio();
2680
2681         packet_queue_flush(&is->audioq);
2682         av_free_packet(&is->audio_pkt);
2683         swr_free(&is->swr_ctx);
2684         av_freep(&is->audio_buf1);
2685         is->audio_buf1_size = 0;
2686         is->audio_buf = NULL;
2687         av_frame_free(&is->frame);
2688
2689         if (is->rdft) {
2690             av_rdft_end(is->rdft);
2691             av_freep(&is->rdft_data);
2692             is->rdft = NULL;
2693             is->rdft_bits = 0;
2694         }
2695 #if CONFIG_AVFILTER
2696         avfilter_graph_free(&is->agraph);
2697 #endif
2698         break;
2699     case AVMEDIA_TYPE_VIDEO:
2700         packet_queue_abort(&is->videoq);
2701
2702         /* note: we also signal this mutex to make sure we deblock the
2703            video thread in all cases */
2704         SDL_LockMutex(is->pictq_mutex);
2705         SDL_CondSignal(is->pictq_cond);
2706         SDL_UnlockMutex(is->pictq_mutex);
2707
2708         SDL_WaitThread(is->video_tid, NULL);
2709
2710         packet_queue_flush(&is->videoq);
2711         break;
2712     case AVMEDIA_TYPE_SUBTITLE:
2713         packet_queue_abort(&is->subtitleq);
2714
2715         /* note: we also signal this mutex to make sure we deblock the
2716            video thread in all cases */
2717         SDL_LockMutex(is->subpq_mutex);
2718         SDL_CondSignal(is->subpq_cond);
2719         SDL_UnlockMutex(is->subpq_mutex);
2720
2721         SDL_WaitThread(is->subtitle_tid, NULL);
2722
2723         packet_queue_flush(&is->subtitleq);
2724         break;
2725     default:
2726         break;
2727     }
2728
2729     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2730     avcodec_close(avctx);
2731     switch (avctx->codec_type) {
2732     case AVMEDIA_TYPE_AUDIO:
2733         is->audio_st = NULL;
2734         is->audio_stream = -1;
2735         break;
2736     case AVMEDIA_TYPE_VIDEO:
2737         is->video_st = NULL;
2738         is->video_stream = -1;
2739         break;
2740     case AVMEDIA_TYPE_SUBTITLE:
2741         is->subtitle_st = NULL;
2742         is->subtitle_stream = -1;
2743         break;
2744     default:
2745         break;
2746     }
2747 }
2748
2749 static int decode_interrupt_cb(void *ctx)
2750 {
2751     VideoState *is = ctx;
2752     return is->abort_request;
2753 }
2754
2755 static int is_realtime(AVFormatContext *s)
2756 {
2757     if(   !strcmp(s->iformat->name, "rtp")
2758        || !strcmp(s->iformat->name, "rtsp")
2759        || !strcmp(s->iformat->name, "sdp")
2760     )
2761         return 1;
2762
2763     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2764                  || !strncmp(s->filename, "udp:", 4)
2765                 )
2766     )
2767         return 1;
2768     return 0;
2769 }
2770
2771 /* this thread gets the stream from the disk or the network */
2772 static int read_thread(void *arg)
2773 {
2774     VideoState *is = arg;
2775     AVFormatContext *ic = NULL;
2776     int err, i, ret;
2777     int st_index[AVMEDIA_TYPE_NB];
2778     AVPacket pkt1, *pkt = &pkt1;
2779     int eof = 0;
2780     int64_t stream_start_time;
2781     int pkt_in_play_range = 0;
2782     AVDictionaryEntry *t;
2783     AVDictionary **opts;
2784     int orig_nb_streams;
2785     SDL_mutex *wait_mutex = SDL_CreateMutex();
2786
2787     memset(st_index, -1, sizeof(st_index));
2788     is->last_video_stream = is->video_stream = -1;
2789     is->last_audio_stream = is->audio_stream = -1;
2790     is->last_subtitle_stream = is->subtitle_stream = -1;
2791
2792     ic = avformat_alloc_context();
2793     ic->interrupt_callback.callback = decode_interrupt_cb;
2794     ic->interrupt_callback.opaque = is;
2795     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2796     if (err < 0) {
2797         print_error(is->filename, err);
2798         ret = -1;
2799         goto fail;
2800     }
2801     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2802         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2803         ret = AVERROR_OPTION_NOT_FOUND;
2804         goto fail;
2805     }
2806     is->ic = ic;
2807
2808     if (genpts)
2809         ic->flags |= AVFMT_FLAG_GENPTS;
2810
2811     av_format_inject_global_side_data(ic);
2812
2813     opts = setup_find_stream_info_opts(ic, codec_opts);
2814     orig_nb_streams = ic->nb_streams;
2815
2816     err = avformat_find_stream_info(ic, opts);
2817     if (err < 0) {
2818         av_log(NULL, AV_LOG_WARNING,
2819                "%s: could not find codec parameters\n", is->filename);
2820         ret = -1;
2821         goto fail;
2822     }
2823     for (i = 0; i < orig_nb_streams; i++)
2824         av_dict_free(&opts[i]);
2825     av_freep(&opts);
2826
2827     if (ic->pb)
2828         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2829
2830     if (seek_by_bytes < 0)
2831         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2832
2833     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2834
2835     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2836         window_title = av_asprintf("%s - %s", t->value, input_filename);
2837
2838     /* if seeking requested, we execute it */
2839     if (start_time != AV_NOPTS_VALUE) {
2840         int64_t timestamp;
2841
2842         timestamp = start_time;
2843         /* add the stream start time */
2844         if (ic->start_time != AV_NOPTS_VALUE)
2845             timestamp += ic->start_time;
2846         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2847         if (ret < 0) {
2848             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2849                     is->filename, (double)timestamp / AV_TIME_BASE);
2850         }
2851     }
2852
2853     is->realtime = is_realtime(ic);
2854
2855     for (i = 0; i < ic->nb_streams; i++)
2856         ic->streams[i]->discard = AVDISCARD_ALL;
2857     if (!video_disable)
2858         st_index[AVMEDIA_TYPE_VIDEO] =
2859             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2860                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2861     if (!audio_disable)
2862         st_index[AVMEDIA_TYPE_AUDIO] =
2863             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2864                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2865                                 st_index[AVMEDIA_TYPE_VIDEO],
2866                                 NULL, 0);
2867     if (!video_disable && !subtitle_disable)
2868         st_index[AVMEDIA_TYPE_SUBTITLE] =
2869             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2870                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2871                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2872                                  st_index[AVMEDIA_TYPE_AUDIO] :
2873                                  st_index[AVMEDIA_TYPE_VIDEO]),
2874                                 NULL, 0);
2875     if (show_status) {
2876         av_dump_format(ic, 0, is->filename, 0);
2877     }
2878
2879     is->show_mode = show_mode;
2880     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2881         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2882         AVCodecContext *avctx = st->codec;
2883         VideoPicture vp = {0};
2884         vp.width = avctx->width;
2885         vp.height = avctx->height;
2886         vp.sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2887         if (vp.width)
2888             set_default_window_size(&vp);
2889     }
2890
2891     /* open the streams */
2892     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2893         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2894     }
2895
2896     ret = -1;
2897     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2898         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2899     }
2900     if (is->show_mode == SHOW_MODE_NONE)
2901         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2902
2903     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2904         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2905     }
2906
2907     if (is->video_stream < 0 && is->audio_stream < 0) {
2908         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2909                is->filename);
2910         ret = -1;
2911         goto fail;
2912     }
2913
2914     if (infinite_buffer < 0 && is->realtime)
2915         infinite_buffer = 1;
2916
2917     for (;;) {
2918         if (is->abort_request)
2919             break;
2920         if (is->paused != is->last_paused) {
2921             is->last_paused = is->paused;
2922             if (is->paused)
2923                 is->read_pause_return = av_read_pause(ic);
2924             else
2925                 av_read_play(ic);
2926         }
2927 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2928         if (is->paused &&
2929                 (!strcmp(ic->iformat->name, "rtsp") ||
2930                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2931             /* wait 10 ms to avoid trying to get another packet */
2932             /* XXX: horrible */
2933             SDL_Delay(10);
2934             continue;
2935         }
2936 #endif
2937         if (is->seek_req) {
2938             int64_t seek_target = is->seek_pos;
2939             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2940             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2941 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2942 //      of the seek_pos/seek_rel variables
2943
2944             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2945             if (ret < 0) {
2946                 av_log(NULL, AV_LOG_ERROR,
2947                        "%s: error while seeking\n", is->ic->filename);
2948             } else {
2949                 if (is->audio_stream >= 0) {
2950                     packet_queue_flush(&is->audioq);
2951                     packet_queue_put(&is->audioq, &flush_pkt);
2952                 }
2953                 if (is->subtitle_stream >= 0) {
2954                     packet_queue_flush(&is->subtitleq);
2955                     packet_queue_put(&is->subtitleq, &flush_pkt);
2956                 }
2957                 if (is->video_stream >= 0) {
2958                     packet_queue_flush(&is->videoq);
2959                     packet_queue_put(&is->videoq, &flush_pkt);
2960                 }
2961                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2962                    set_clock(&is->extclk, NAN, 0);
2963                 } else {
2964                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2965                 }
2966             }
2967             is->seek_req = 0;
2968             is->queue_attachments_req = 1;
2969             eof = 0;
2970             if (is->paused)
2971                 step_to_next_frame(is);
2972         }
2973         if (is->queue_attachments_req) {
2974             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2975                 AVPacket copy;
2976                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
2977                     goto fail;
2978                 packet_queue_put(&is->videoq, &copy);
2979                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2980             }
2981             is->queue_attachments_req = 0;
2982         }
2983
2984         /* if the queue are full, no need to read more */
2985         if (infinite_buffer<1 &&
2986               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2987             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2988                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
2989                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2990                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
2991             /* wait 10 ms */
2992             SDL_LockMutex(wait_mutex);
2993             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2994             SDL_UnlockMutex(wait_mutex);
2995             continue;
2996         }
2997         if (!is->paused &&
2998             (!is->audio_st || is->audio_finished == is->audioq.serial) &&
2999             (!is->video_st || (is->video_finished == is->videoq.serial && is->pictq_size == 0))) {
3000             if (loop != 1 && (!loop || --loop)) {
3001                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3002             } else if (autoexit) {
3003                 ret = AVERROR_EOF;
3004                 goto fail;
3005             }
3006         }
3007         if (eof) {
3008             if (is->video_stream >= 0)
3009                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3010             if (is->audio_stream >= 0)
3011                 packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3012             if (is->subtitle_stream >= 0)
3013                 packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3014             SDL_Delay(10);
3015             eof=0;
3016             continue;
3017         }
3018         ret = av_read_frame(ic, pkt);
3019         if (ret < 0) {
3020             if (ret == AVERROR_EOF || url_feof(ic->pb))
3021                 eof = 1;
3022             if (ic->pb && ic->pb->error)
3023                 break;
3024             SDL_LockMutex(wait_mutex);
3025             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3026             SDL_UnlockMutex(wait_mutex);
3027             continue;
3028         }
3029         /* check if packet is in play range specified by user, then queue, otherwise discard */
3030         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3031         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3032                 (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3033                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3034                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3035                 <= ((double)duration / 1000000);
3036         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3037             packet_queue_put(&is->audioq, pkt);
3038         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3039                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3040             packet_queue_put(&is->videoq, pkt);
3041         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3042             packet_queue_put(&is->subtitleq, pkt);
3043         } else {
3044             av_free_packet(pkt);
3045         }
3046     }
3047     /* wait until the end */
3048     while (!is->abort_request) {
3049         SDL_Delay(100);
3050     }
3051
3052     ret = 0;
3053  fail:
3054     /* close each stream */
3055     if (is->audio_stream >= 0)
3056         stream_component_close(is, is->audio_stream);
3057     if (is->video_stream >= 0)
3058         stream_component_close(is, is->video_stream);
3059     if (is->subtitle_stream >= 0)
3060         stream_component_close(is, is->subtitle_stream);
3061     if (is->ic) {
3062         avformat_close_input(&is->ic);
3063     }
3064
3065     if (ret != 0) {
3066         SDL_Event event;
3067
3068         event.type = FF_QUIT_EVENT;
3069         event.user.data1 = is;
3070         SDL_PushEvent(&event);
3071     }
3072     SDL_DestroyMutex(wait_mutex);
3073     return 0;
3074 }
3075
3076 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3077 {
3078     VideoState *is;
3079
3080     is = av_mallocz(sizeof(VideoState));
3081     if (!is)
3082         return NULL;
3083     av_strlcpy(is->filename, filename, sizeof(is->filename));
3084     is->iformat = iformat;
3085     is->ytop    = 0;
3086     is->xleft   = 0;
3087
3088     /* start video display */
3089     is->pictq_mutex = SDL_CreateMutex();
3090     is->pictq_cond  = SDL_CreateCond();
3091
3092     is->subpq_mutex = SDL_CreateMutex();
3093     is->subpq_cond  = SDL_CreateCond();
3094
3095     packet_queue_init(&is->videoq);
3096     packet_queue_init(&is->audioq);
3097     packet_queue_init(&is->subtitleq);
3098
3099     is->continue_read_thread = SDL_CreateCond();
3100
3101     init_clock(&is->vidclk, &is->videoq.serial);
3102     init_clock(&is->audclk, &is->audioq.serial);
3103     init_clock(&is->extclk, &is->extclk.serial);
3104     is->audio_clock_serial = -1;
3105     is->audio_last_serial = -1;
3106     is->av_sync_type = av_sync_type;
3107     is->read_tid     = SDL_CreateThread(read_thread, is);
3108     if (!is->read_tid) {
3109         av_free(is);
3110         return NULL;
3111     }
3112     return is;
3113 }
3114
3115 static void stream_cycle_channel(VideoState *is, int codec_type)
3116 {
3117     AVFormatContext *ic = is->ic;
3118     int start_index, stream_index;
3119     int old_index;
3120     AVStream *st;
3121     AVProgram *p = NULL;
3122     int nb_streams = is->ic->nb_streams;
3123
3124     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3125         start_index = is->last_video_stream;
3126         old_index = is->video_stream;
3127     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3128         start_index = is->last_audio_stream;
3129         old_index = is->audio_stream;
3130     } else {
3131         start_index = is->last_subtitle_stream;
3132         old_index = is->subtitle_stream;
3133     }
3134     stream_index = start_index;
3135
3136     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3137         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3138         if (p) {
3139             nb_streams = p->nb_stream_indexes;
3140             for (start_index = 0; start_index < nb_streams; start_index++)
3141                 if (p->stream_index[start_index] == stream_index)
3142                     break;
3143             if (start_index == nb_streams)
3144                 start_index = -1;
3145             stream_index = start_index;
3146         }
3147     }
3148
3149     for (;;) {
3150         if (++stream_index >= nb_streams)
3151         {
3152             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3153             {
3154                 stream_index = -1;
3155                 is->last_subtitle_stream = -1;
3156                 goto the_end;
3157             }
3158             if (start_index == -1)
3159                 return;
3160             stream_index = 0;
3161         }
3162         if (stream_index == start_index)
3163             return;
3164         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3165         if (st->codec->codec_type == codec_type) {
3166             /* check that parameters are OK */
3167             switch (codec_type) {
3168             case AVMEDIA_TYPE_AUDIO:
3169                 if (st->codec->sample_rate != 0 &&
3170                     st->codec->channels != 0)
3171                     goto the_end;
3172                 break;
3173             case AVMEDIA_TYPE_VIDEO:
3174             case AVMEDIA_TYPE_SUBTITLE:
3175                 goto the_end;
3176             default:
3177                 break;
3178             }
3179         }
3180     }
3181  the_end:
3182     if (p && stream_index != -1)
3183         stream_index = p->stream_index[stream_index];
3184     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3185            av_get_media_type_string(codec_type),
3186            old_index,
3187            stream_index);
3188
3189     stream_component_close(is, old_index);
3190     stream_component_open(is, stream_index);
3191 }
3192
3193
3194 static void toggle_full_screen(VideoState *is)
3195 {
3196 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3197     /* OS X needs to reallocate the SDL overlays */
3198     int i;
3199     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3200         is->pictq[i].reallocate = 1;
3201 #endif
3202     is_full_screen = !is_full_screen;
3203     video_open(is, 1, NULL);
3204 }
3205
3206 static void toggle_audio_display(VideoState *is)
3207 {
3208     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3209     int next = is->show_mode;
3210     do {
3211         next = (next + 1) % SHOW_MODE_NB;
3212     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3213     if (is->show_mode != next) {
3214         fill_rectangle(screen,
3215                     is->xleft, is->ytop, is->width, is->height,
3216                     bgcolor, 1);
3217         is->force_refresh = 1;
3218         is->show_mode = next;
3219     }
3220 }
3221
3222 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3223     double remaining_time = 0.0;
3224     SDL_PumpEvents();
3225     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3226         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3227             SDL_ShowCursor(0);
3228             cursor_hidden = 1;
3229         }
3230         if (remaining_time > 0.0)
3231             av_usleep((int64_t)(remaining_time * 1000000.0));
3232         remaining_time = REFRESH_RATE;
3233         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3234             video_refresh(is, &remaining_time);
3235         SDL_PumpEvents();
3236     }
3237 }
3238
3239 static void seek_chapter(VideoState *is, int incr)
3240 {
3241     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3242     int i;
3243
3244     if (!is->ic->nb_chapters)
3245         return;
3246
3247     /* find the current chapter */
3248     for (i = 0; i < is->ic->nb_chapters; i++) {
3249         AVChapter *ch = is->ic->chapters[i];
3250         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3251             i--;
3252             break;
3253         }
3254     }
3255
3256     i += incr;
3257     i = FFMAX(i, 0);
3258     if (i >= is->ic->nb_chapters)
3259         return;
3260
3261     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3262     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3263                                  AV_TIME_BASE_Q), 0, 0);
3264 }
3265
3266 /* handle an event sent by the GUI */
3267 static void event_loop(VideoState *cur_stream)
3268 {
3269     SDL_Event event;
3270     double incr, pos, frac;
3271
3272     for (;;) {
3273         double x;
3274         refresh_loop_wait_event(cur_stream, &event);
3275         switch (event.type) {
3276         case SDL_KEYDOWN:
3277             if (exit_on_keydown) {
3278                 do_exit(cur_stream);
3279                 break;
3280             }
3281             switch (event.key.keysym.sym) {
3282             case SDLK_ESCAPE:
3283             case SDLK_q:
3284                 do_exit(cur_stream);
3285                 break;
3286             case SDLK_f:
3287                 toggle_full_screen(cur_stream);
3288                 cur_stream->force_refresh = 1;
3289                 break;
3290             case SDLK_p:
3291             case SDLK_SPACE:
3292                 toggle_pause(cur_stream);
3293                 break;
3294             case SDLK_s: // S: Step to next frame
3295                 step_to_next_frame(cur_stream);
3296                 break;
3297             case SDLK_a:
3298                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3299                 break;
3300             case SDLK_v:
3301                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3302                 break;
3303             case SDLK_c:
3304                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3305                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3306                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3307                 break;
3308             case SDLK_t:
3309                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3310                 break;
3311             case SDLK_w:
3312 #if CONFIG_AVFILTER
3313                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3314                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3315                         cur_stream->vfilter_idx = 0;
3316                 } else {
3317                     cur_stream->vfilter_idx = 0;
3318                     toggle_audio_display(cur_stream);
3319                 }
3320 #else
3321                 toggle_audio_display(cur_stream);
3322 #endif
3323                 break;
3324             case SDLK_PAGEUP:
3325                 if (cur_stream->ic->nb_chapters <= 1) {
3326                     incr = 600.0;
3327                     goto do_seek;
3328                 }
3329                 seek_chapter(cur_stream, 1);
3330                 break;
3331             case SDLK_PAGEDOWN:
3332                 if (cur_stream->ic->nb_chapters <= 1) {
3333                     incr = -600.0;
3334                     goto do_seek;
3335                 }
3336                 seek_chapter(cur_stream, -1);
3337                 break;
3338             case SDLK_LEFT:
3339                 incr = -10.0;
3340                 goto do_seek;
3341             case SDLK_RIGHT:
3342                 incr = 10.0;
3343                 goto do_seek;
3344             case SDLK_UP:
3345                 incr = 60.0;
3346                 goto do_seek;
3347             case SDLK_DOWN:
3348                 incr = -60.0;
3349             do_seek:
3350                     if (seek_by_bytes) {
3351                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
3352                             pos = cur_stream->video_current_pos;
3353                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
3354                             pos = cur_stream->audio_pkt.pos;
3355                         } else
3356                             pos = avio_tell(cur_stream->ic->pb);
3357                         if (cur_stream->ic->bit_rate)
3358                             incr *= cur_stream->ic->bit_rate / 8.0;
3359                         else
3360                             incr *= 180000.0;
3361                         pos += incr;
3362                         stream_seek(cur_stream, pos, incr, 1);
3363                     } else {
3364                         pos = get_master_clock(cur_stream);
3365                         if (isnan(pos))
3366                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3367                         pos += incr;
3368                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3369                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3370                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3371                     }
3372                 break;
3373             default:
3374                 break;
3375             }
3376             break;
3377         case SDL_VIDEOEXPOSE:
3378             cur_stream->force_refresh = 1;
3379             break;
3380         case SDL_MOUSEBUTTONDOWN:
3381             if (exit_on_mousedown) {
3382                 do_exit(cur_stream);
3383                 break;
3384             }
3385         case SDL_MOUSEMOTION:
3386             if (cursor_hidden) {
3387                 SDL_ShowCursor(1);
3388                 cursor_hidden = 0;
3389             }
3390             cursor_last_shown = av_gettime_relative();
3391             if (event.type == SDL_MOUSEBUTTONDOWN) {
3392                 x = event.button.x;
3393             } else {
3394                 if (event.motion.state != SDL_PRESSED)
3395                     break;
3396                 x = event.motion.x;
3397             }
3398                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3399                     uint64_t size =  avio_size(cur_stream->ic->pb);
3400                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3401                 } else {
3402                     int64_t ts;
3403                     int ns, hh, mm, ss;
3404                     int tns, thh, tmm, tss;
3405                     tns  = cur_stream->ic->duration / 1000000LL;
3406                     thh  = tns / 3600;
3407                     tmm  = (tns % 3600) / 60;
3408                     tss  = (tns % 60);
3409                     frac = x / cur_stream->width;
3410                     ns   = frac * tns;
3411                     hh   = ns / 3600;
3412                     mm   = (ns % 3600) / 60;
3413                     ss   = (ns % 60);
3414                     av_log(NULL, AV_LOG_INFO,
3415                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3416                             hh, mm, ss, thh, tmm, tss);
3417                     ts = frac * cur_stream->ic->duration;
3418                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3419                         ts += cur_stream->ic->start_time;
3420                     stream_seek(cur_stream, ts, 0, 0);
3421                 }
3422             break;
3423         case SDL_VIDEORESIZE:
3424                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3425                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
3426                 if (!screen) {
3427                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3428                     do_exit(cur_stream);
3429                 }
3430                 screen_width  = cur_stream->width  = screen->w;
3431                 screen_height = cur_stream->height = screen->h;
3432                 cur_stream->force_refresh = 1;
3433             break;
3434         case SDL_QUIT:
3435         case FF_QUIT_EVENT:
3436             do_exit(cur_stream);
3437             break;
3438         case FF_ALLOC_EVENT:
3439             alloc_picture(event.user.data1);