2 * FFplay : Simple Media Player based on the ffmpeg libraries
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
32 #include <SDL_thread.h>
35 #undef main /* We don't want SDL to override our main() */
42 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
43 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
44 #define MAX_SUBTITLEQ_SIZE (5 * 16 * 1024)
46 /* SDL audio buffer size, in samples. Should be small to have precise
47 A/V sync as SDL does not have hardware buffer fullness info. */
48 #define SDL_AUDIO_BUFFER_SIZE 1024
50 /* no AV sync correction is done if below the AV sync threshold */
51 #define AV_SYNC_THRESHOLD 0.01
52 /* no AV correction is done if too big error */
53 #define AV_NOSYNC_THRESHOLD 10.0
55 /* maximum audio speed change to get correct sync */
56 #define SAMPLE_CORRECTION_PERCENT_MAX 10
58 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
59 #define AUDIO_DIFF_AVG_NB 20
61 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
62 #define SAMPLE_ARRAY_SIZE (2*65536)
64 static int sws_flags = SWS_BICUBIC;
66 typedef struct PacketQueue {
67 AVPacketList *first_pkt, *last_pkt;
75 #define VIDEO_PICTURE_QUEUE_SIZE 1
76 #define SUBPICTURE_QUEUE_SIZE 4
78 typedef struct VideoPicture {
79 double pts; ///<presentation time stamp for this picture
81 int width, height; /* source height & width */
85 typedef struct SubPicture {
86 double pts; /* presentation time stamp for this picture */
91 AV_SYNC_AUDIO_MASTER, /* default choice */
93 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
96 typedef struct VideoState {
97 SDL_Thread *parse_tid;
98 SDL_Thread *video_tid;
99 AVInputFormat *iformat;
108 int dtg_active_format;
113 double external_clock; /* external clock base */
114 int64_t external_clock_time;
117 double audio_diff_cum; /* used for AV difference average computation */
118 double audio_diff_avg_coef;
119 double audio_diff_threshold;
120 int audio_diff_avg_count;
123 int audio_hw_buf_size;
124 /* samples output by the codec. we reserve more space for avsync
126 DECLARE_ALIGNED(16,uint8_t,audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
127 unsigned int audio_buf_size; /* in bytes */
128 int audio_buf_index; /* in bytes */
130 uint8_t *audio_pkt_data;
133 int show_audio; /* if true, display audio samples */
134 int16_t sample_array[SAMPLE_ARRAY_SIZE];
135 int sample_array_index;
138 SDL_Thread *subtitle_tid;
140 int subtitle_stream_changed;
141 AVStream *subtitle_st;
142 PacketQueue subtitleq;
143 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
144 int subpq_size, subpq_rindex, subpq_windex;
145 SDL_mutex *subpq_mutex;
146 SDL_cond *subpq_cond;
149 double frame_last_pts;
150 double frame_last_delay;
151 double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
155 double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used)
156 int64_t video_current_pts_time; ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
157 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
158 int pictq_size, pictq_rindex, pictq_windex;
159 SDL_mutex *pictq_mutex;
160 SDL_cond *pictq_cond;
162 // QETimer *video_timer;
164 int width, height, xleft, ytop;
167 void show_help(void);
168 static int audio_write_get_buf_size(VideoState *is);
170 /* options specified by the user */
171 static AVInputFormat *file_iformat;
172 static const char *input_filename;
173 static int fs_screen_width;
174 static int fs_screen_height;
175 static int screen_width = 0;
176 static int screen_height = 0;
177 static int frame_width = 0;
178 static int frame_height = 0;
179 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
180 static int audio_disable;
181 static int video_disable;
182 static int wanted_audio_stream= 0;
183 static int seek_by_bytes;
184 static int display_disable;
185 static int show_status;
186 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
187 static int64_t start_time = AV_NOPTS_VALUE;
188 static int debug = 0;
189 static int debug_mv = 0;
191 static int thread_count = 1;
192 static int workaround_bugs = 1;
194 static int genpts = 0;
195 static int lowres = 0;
196 static int idct = FF_IDCT_AUTO;
197 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
198 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
199 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
200 static int error_resilience = FF_ER_CAREFUL;
201 static int error_concealment = 3;
202 static int decoder_reorder_pts= 0;
204 /* current context */
205 static int is_full_screen;
206 static VideoState *cur_stream;
207 static int64_t audio_callback_time;
211 #define FF_ALLOC_EVENT (SDL_USEREVENT)
212 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
213 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
217 /* packet queue handling */
218 static void packet_queue_init(PacketQueue *q)
220 memset(q, 0, sizeof(PacketQueue));
221 q->mutex = SDL_CreateMutex();
222 q->cond = SDL_CreateCond();
225 static void packet_queue_flush(PacketQueue *q)
227 AVPacketList *pkt, *pkt1;
229 SDL_LockMutex(q->mutex);
230 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
232 av_free_packet(&pkt->pkt);
239 SDL_UnlockMutex(q->mutex);
242 static void packet_queue_end(PacketQueue *q)
244 packet_queue_flush(q);
245 SDL_DestroyMutex(q->mutex);
246 SDL_DestroyCond(q->cond);
249 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
253 /* duplicate the packet */
254 if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
257 pkt1 = av_malloc(sizeof(AVPacketList));
264 SDL_LockMutex(q->mutex);
270 q->last_pkt->next = pkt1;
273 q->size += pkt1->pkt.size;
274 /* XXX: should duplicate packet data in DV case */
275 SDL_CondSignal(q->cond);
277 SDL_UnlockMutex(q->mutex);
281 static void packet_queue_abort(PacketQueue *q)
283 SDL_LockMutex(q->mutex);
285 q->abort_request = 1;
287 SDL_CondSignal(q->cond);
289 SDL_UnlockMutex(q->mutex);
292 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
293 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
298 SDL_LockMutex(q->mutex);
301 if (q->abort_request) {
308 q->first_pkt = pkt1->next;
312 q->size -= pkt1->pkt.size;
321 SDL_CondWait(q->cond, q->mutex);
324 SDL_UnlockMutex(q->mutex);
328 static inline void fill_rectangle(SDL_Surface *screen,
329 int x, int y, int w, int h, int color)
336 SDL_FillRect(screen, &rect, color);
340 /* draw only the border of a rectangle */
341 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
345 /* fill the background */
349 w2 = s->width - (x + w);
355 h2 = s->height - (y + h);
358 fill_rectangle(screen,
362 fill_rectangle(screen,
363 s->xleft + s->width - w2, s->ytop,
366 fill_rectangle(screen,
367 s->xleft + w1, s->ytop,
368 s->width - w1 - w2, h1,
370 fill_rectangle(screen,
371 s->xleft + w1, s->ytop + s->height - h2,
372 s->width - w1 - w2, h2,
380 #define ONE_HALF (1 << (SCALEBITS - 1))
381 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
383 #define RGB_TO_Y_CCIR(r, g, b) \
384 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
385 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
387 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
388 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
389 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
391 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
392 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
393 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
395 #define ALPHA_BLEND(a, oldp, newp, s)\
396 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
398 #define RGBA_IN(r, g, b, a, s)\
400 unsigned int v = ((const uint32_t *)(s))[0];\
401 a = (v >> 24) & 0xff;\
402 r = (v >> 16) & 0xff;\
403 g = (v >> 8) & 0xff;\
407 #define YUVA_IN(y, u, v, a, s, pal)\
409 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)s];\
410 a = (val >> 24) & 0xff;\
411 y = (val >> 16) & 0xff;\
412 u = (val >> 8) & 0xff;\
416 #define YUVA_OUT(d, y, u, v, a)\
418 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
424 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect)
426 int wrap, wrap3, width2, skip2;
427 int y, u, v, a, u1, v1, a1, w, h;
428 uint8_t *lum, *cb, *cr;
432 lum = dst->data[0] + rect->y * dst->linesize[0];
433 cb = dst->data[1] + (rect->y >> 1) * dst->linesize[1];
434 cr = dst->data[2] + (rect->y >> 1) * dst->linesize[2];
436 width2 = (rect->w + 1) >> 1;
437 skip2 = rect->x >> 1;
438 wrap = dst->linesize[0];
439 wrap3 = rect->linesize;
441 pal = rect->rgba_palette; /* Now in YCrCb! */
449 YUVA_IN(y, u, v, a, p, pal);
450 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
451 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
452 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
458 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
459 YUVA_IN(y, u, v, a, p, pal);
463 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
465 YUVA_IN(y, u, v, a, p + BPP, pal);
469 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
470 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
471 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
478 YUVA_IN(y, u, v, a, p, pal);
479 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
480 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
481 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
483 p += wrap3 + (wrap3 - rect->w * BPP);
484 lum += wrap + (wrap - rect->w - rect->x);
485 cb += dst->linesize[1] - width2 - skip2;
486 cr += dst->linesize[2] - width2 - skip2;
488 for(h = rect->h - (rect->y & 1); h >= 2; h -= 2) {
494 YUVA_IN(y, u, v, a, p, pal);
498 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
501 YUVA_IN(y, u, v, a, p, pal);
505 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
506 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
507 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
513 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
514 YUVA_IN(y, u, v, a, p, pal);
518 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
520 YUVA_IN(y, u, v, a, p, pal);
524 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
528 YUVA_IN(y, u, v, a, p, pal);
532 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
534 YUVA_IN(y, u, v, a, p, pal);
538 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
540 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
541 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
545 p += -wrap3 + 2 * BPP;
549 YUVA_IN(y, u, v, a, p, pal);
553 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
556 YUVA_IN(y, u, v, a, p, pal);
560 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
561 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
562 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
568 p += wrap3 + (wrap3 - rect->w * BPP);
569 lum += wrap + (wrap - rect->w - rect->x);
570 cb += dst->linesize[1] - width2 - skip2;
571 cr += dst->linesize[2] - width2 - skip2;
573 /* handle odd height */
580 YUVA_IN(y, u, v, a, p, pal);
581 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
582 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
583 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
589 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
590 YUVA_IN(y, u, v, a, p, pal);
594 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
596 YUVA_IN(y, u, v, a, p + BPP, pal);
600 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
601 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
602 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
609 YUVA_IN(y, u, v, a, p, pal);
610 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
611 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
612 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
617 static void free_subpicture(SubPicture *sp)
621 for (i = 0; i < sp->sub.num_rects; i++)
623 av_free(sp->sub.rects[i].bitmap);
624 av_free(sp->sub.rects[i].rgba_palette);
627 av_free(sp->sub.rects);
629 memset(&sp->sub, 0, sizeof(AVSubtitle));
632 static void video_image_display(VideoState *is)
638 int width, height, x, y;
642 vp = &is->pictq[is->pictq_rindex];
644 /* XXX: use variable in the frame */
645 if (is->video_st->codec->sample_aspect_ratio.num == 0)
648 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio)
649 * is->video_st->codec->width / is->video_st->codec->height;;
650 if (aspect_ratio <= 0.0)
651 aspect_ratio = (float)is->video_st->codec->width /
652 (float)is->video_st->codec->height;
653 /* if an active format is indicated, then it overrides the
656 if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
657 is->dtg_active_format = is->video_st->codec->dtg_active_format;
658 printf("dtg_active_format=%d\n", is->dtg_active_format);
662 switch(is->video_st->codec->dtg_active_format) {
663 case FF_DTG_AFD_SAME:
668 aspect_ratio = 4.0 / 3.0;
670 case FF_DTG_AFD_16_9:
671 aspect_ratio = 16.0 / 9.0;
673 case FF_DTG_AFD_14_9:
674 aspect_ratio = 14.0 / 9.0;
676 case FF_DTG_AFD_4_3_SP_14_9:
677 aspect_ratio = 14.0 / 9.0;
679 case FF_DTG_AFD_16_9_SP_14_9:
680 aspect_ratio = 14.0 / 9.0;
682 case FF_DTG_AFD_SP_4_3:
683 aspect_ratio = 4.0 / 3.0;
690 if (is->subpq_size > 0)
692 sp = &is->subpq[is->subpq_rindex];
694 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
696 SDL_LockYUVOverlay (vp->bmp);
698 pict.data[0] = vp->bmp->pixels[0];
699 pict.data[1] = vp->bmp->pixels[2];
700 pict.data[2] = vp->bmp->pixels[1];
702 pict.linesize[0] = vp->bmp->pitches[0];
703 pict.linesize[1] = vp->bmp->pitches[2];
704 pict.linesize[2] = vp->bmp->pitches[1];
706 for (i = 0; i < sp->sub.num_rects; i++)
707 blend_subrect(&pict, &sp->sub.rects[i]);
709 SDL_UnlockYUVOverlay (vp->bmp);
715 /* XXX: we suppose the screen has a 1.0 pixel ratio */
717 width = ((int)rint(height * aspect_ratio)) & -3;
718 if (width > is->width) {
720 height = ((int)rint(width / aspect_ratio)) & -3;
722 x = (is->width - width) / 2;
723 y = (is->height - height) / 2;
724 if (!is->no_background) {
725 /* fill the background */
726 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
728 is->no_background = 0;
730 rect.x = is->xleft + x;
731 rect.y = is->ytop + y;
734 SDL_DisplayYUVOverlay(vp->bmp, &rect);
737 fill_rectangle(screen,
738 is->xleft, is->ytop, is->width, is->height,
739 QERGB(0x00, 0x00, 0x00));
744 static inline int compute_mod(int a, int b)
753 static void video_audio_display(VideoState *s)
755 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
756 int ch, channels, h, h2, bgcolor, fgcolor;
759 /* compute display index : center on currently output samples */
760 channels = s->audio_st->codec->channels;
761 nb_display_channels = channels;
764 delay = audio_write_get_buf_size(s);
767 /* to be more precise, we take into account the time spent since
768 the last buffer computation */
769 if (audio_callback_time) {
770 time_diff = av_gettime() - audio_callback_time;
771 delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
774 delay -= s->width / 2;
775 if (delay < s->width)
778 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
781 for(i=0; i<1000; i+=channels){
782 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
783 int a= s->sample_array[idx];
784 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
785 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
786 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
788 if(h<score && (b^c)<0){
794 s->last_i_start = i_start;
796 i_start = s->last_i_start;
799 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
800 fill_rectangle(screen,
801 s->xleft, s->ytop, s->width, s->height,
804 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
806 /* total height for one channel */
807 h = s->height / nb_display_channels;
808 /* graph height / 2 */
810 for(ch = 0;ch < nb_display_channels; ch++) {
812 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
813 for(x = 0; x < s->width; x++) {
814 y = (s->sample_array[i] * h2) >> 15;
821 fill_rectangle(screen,
822 s->xleft + x, ys, 1, y,
825 if (i >= SAMPLE_ARRAY_SIZE)
826 i -= SAMPLE_ARRAY_SIZE;
830 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
832 for(ch = 1;ch < nb_display_channels; ch++) {
833 y = s->ytop + ch * h;
834 fill_rectangle(screen,
835 s->xleft, y, s->width, 1,
838 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
841 static int video_open(VideoState *is){
842 int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
845 if(is_full_screen) flags |= SDL_FULLSCREEN;
846 else flags |= SDL_RESIZABLE;
848 if (is_full_screen && fs_screen_width) {
850 h = fs_screen_height;
851 } else if(!is_full_screen && screen_width){
854 }else if (is->video_st && is->video_st->codec->width){
855 w = is->video_st->codec->width;
856 h = is->video_st->codec->height;
861 #ifndef CONFIG_DARWIN
862 screen = SDL_SetVideoMode(w, h, 0, flags);
864 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
865 screen = SDL_SetVideoMode(w, h, 24, flags);
868 fprintf(stderr, "SDL: could not set video mode - exiting\n");
871 SDL_WM_SetCaption("FFplay", "FFplay");
873 is->width = screen->w;
874 is->height = screen->h;
879 /* display the current picture, if any */
880 static void video_display(VideoState *is)
883 video_open(cur_stream);
884 if (is->audio_st && is->show_audio)
885 video_audio_display(is);
886 else if (is->video_st)
887 video_image_display(is);
890 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
893 event.type = FF_REFRESH_EVENT;
894 event.user.data1 = opaque;
895 SDL_PushEvent(&event);
896 return 0; /* 0 means stop timer */
899 /* schedule a video refresh in 'delay' ms */
900 static void schedule_refresh(VideoState *is, int delay)
902 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
905 /* get the current audio clock value */
906 static double get_audio_clock(VideoState *is)
909 int hw_buf_size, bytes_per_sec;
910 pts = is->audio_clock;
911 hw_buf_size = audio_write_get_buf_size(is);
914 bytes_per_sec = is->audio_st->codec->sample_rate *
915 2 * is->audio_st->codec->channels;
918 pts -= (double)hw_buf_size / bytes_per_sec;
922 /* get the current video clock value */
923 static double get_video_clock(VideoState *is)
929 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
931 return is->video_current_pts + delta;
934 /* get the current external clock value */
935 static double get_external_clock(VideoState *is)
939 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
942 /* get the current master clock value */
943 static double get_master_clock(VideoState *is)
947 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
949 val = get_video_clock(is);
951 val = get_audio_clock(is);
952 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
954 val = get_audio_clock(is);
956 val = get_video_clock(is);
958 val = get_external_clock(is);
963 /* seek in the stream */
964 static void stream_seek(VideoState *is, int64_t pos, int rel)
968 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
970 is->seek_flags |= AVSEEK_FLAG_BYTE;
975 /* pause or resume the video */
976 static void stream_pause(VideoState *is)
978 is->paused = !is->paused;
980 is->video_current_pts = get_video_clock(is);
981 is->frame_timer += (av_gettime() - is->video_current_pts_time) / 1000000.0;
985 /* called to display each frame */
986 static void video_refresh_timer(void *opaque)
988 VideoState *is = opaque;
990 double actual_delay, delay, sync_threshold, ref_clock, diff;
992 SubPicture *sp, *sp2;
995 if (is->pictq_size == 0) {
996 /* if no picture, need to wait */
997 schedule_refresh(is, 1);
999 /* dequeue the picture */
1000 vp = &is->pictq[is->pictq_rindex];
1002 /* update current video pts */
1003 is->video_current_pts = vp->pts;
1004 is->video_current_pts_time = av_gettime();
1006 /* compute nominal delay */
1007 delay = vp->pts - is->frame_last_pts;
1008 if (delay <= 0 || delay >= 1.0) {
1009 /* if incorrect delay, use previous one */
1010 delay = is->frame_last_delay;
1012 is->frame_last_delay = delay;
1013 is->frame_last_pts = vp->pts;
1015 /* update delay to follow master synchronisation source */
1016 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1017 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1018 /* if video is slave, we try to correct big delays by
1019 duplicating or deleting a frame */
1020 ref_clock = get_master_clock(is);
1021 diff = vp->pts - ref_clock;
1023 /* skip or repeat frame. We take into account the
1024 delay to compute the threshold. I still don't know
1025 if it is the best guess */
1026 sync_threshold = AV_SYNC_THRESHOLD;
1027 if (delay > sync_threshold)
1028 sync_threshold = delay;
1029 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1030 if (diff <= -sync_threshold)
1032 else if (diff >= sync_threshold)
1037 is->frame_timer += delay;
1038 /* compute the REAL delay (we need to do that to avoid
1040 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
1041 if (actual_delay < 0.010) {
1042 /* XXX: should skip picture */
1043 actual_delay = 0.010;
1045 /* launch timer for next picture */
1046 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
1048 #if defined(DEBUG_SYNC)
1049 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1050 delay, actual_delay, vp->pts, -diff);
1053 if(is->subtitle_st) {
1054 if (is->subtitle_stream_changed) {
1055 SDL_LockMutex(is->subpq_mutex);
1057 while (is->subpq_size) {
1058 free_subpicture(&is->subpq[is->subpq_rindex]);
1060 /* update queue size and signal for next picture */
1061 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1062 is->subpq_rindex = 0;
1066 is->subtitle_stream_changed = 0;
1068 SDL_CondSignal(is->subpq_cond);
1069 SDL_UnlockMutex(is->subpq_mutex);
1071 if (is->subpq_size > 0) {
1072 sp = &is->subpq[is->subpq_rindex];
1074 if (is->subpq_size > 1)
1075 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1079 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1080 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1082 free_subpicture(sp);
1084 /* update queue size and signal for next picture */
1085 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1086 is->subpq_rindex = 0;
1088 SDL_LockMutex(is->subpq_mutex);
1090 SDL_CondSignal(is->subpq_cond);
1091 SDL_UnlockMutex(is->subpq_mutex);
1097 /* display picture */
1100 /* update queue size and signal for next picture */
1101 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1102 is->pictq_rindex = 0;
1104 SDL_LockMutex(is->pictq_mutex);
1106 SDL_CondSignal(is->pictq_cond);
1107 SDL_UnlockMutex(is->pictq_mutex);
1109 } else if (is->audio_st) {
1110 /* draw the next audio frame */
1112 schedule_refresh(is, 40);
1114 /* if only audio stream, then display the audio bars (better
1115 than nothing, just to test the implementation */
1117 /* display picture */
1120 schedule_refresh(is, 100);
1123 static int64_t last_time;
1125 int aqsize, vqsize, sqsize;
1128 cur_time = av_gettime();
1129 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
1134 aqsize = is->audioq.size;
1136 vqsize = is->videoq.size;
1137 if (is->subtitle_st)
1138 sqsize = is->subtitleq.size;
1140 if (is->audio_st && is->video_st)
1141 av_diff = get_audio_clock(is) - get_video_clock(is);
1142 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB \r",
1143 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize);
1145 last_time = cur_time;
1150 /* allocate a picture (needs to do that in main thread to avoid
1151 potential locking problems */
1152 static void alloc_picture(void *opaque)
1154 VideoState *is = opaque;
1157 vp = &is->pictq[is->pictq_windex];
1160 SDL_FreeYUVOverlay(vp->bmp);
1163 /* XXX: use generic function */
1164 /* XXX: disable overlay if no hardware acceleration or if RGB format */
1165 switch(is->video_st->codec->pix_fmt) {
1166 case PIX_FMT_YUV420P:
1167 case PIX_FMT_YUV422P:
1168 case PIX_FMT_YUV444P:
1169 case PIX_FMT_YUYV422:
1170 case PIX_FMT_YUV410P:
1171 case PIX_FMT_YUV411P:
1179 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
1180 is->video_st->codec->height,
1183 vp->width = is->video_st->codec->width;
1184 vp->height = is->video_st->codec->height;
1186 SDL_LockMutex(is->pictq_mutex);
1188 SDL_CondSignal(is->pictq_cond);
1189 SDL_UnlockMutex(is->pictq_mutex);
1194 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1196 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
1201 static struct SwsContext *img_convert_ctx;
1203 /* wait until we have space to put a new picture */
1204 SDL_LockMutex(is->pictq_mutex);
1205 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1206 !is->videoq.abort_request) {
1207 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1209 SDL_UnlockMutex(is->pictq_mutex);
1211 if (is->videoq.abort_request)
1214 vp = &is->pictq[is->pictq_windex];
1216 /* alloc or resize hardware picture buffer */
1218 vp->width != is->video_st->codec->width ||
1219 vp->height != is->video_st->codec->height) {
1224 /* the allocation must be done in the main thread to avoid
1226 event.type = FF_ALLOC_EVENT;
1227 event.user.data1 = is;
1228 SDL_PushEvent(&event);
1230 /* wait until the picture is allocated */
1231 SDL_LockMutex(is->pictq_mutex);
1232 while (!vp->allocated && !is->videoq.abort_request) {
1233 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1235 SDL_UnlockMutex(is->pictq_mutex);
1237 if (is->videoq.abort_request)
1241 /* if the frame is not skipped, then display it */
1243 /* get a pointer on the bitmap */
1244 SDL_LockYUVOverlay (vp->bmp);
1246 dst_pix_fmt = PIX_FMT_YUV420P;
1247 pict.data[0] = vp->bmp->pixels[0];
1248 pict.data[1] = vp->bmp->pixels[2];
1249 pict.data[2] = vp->bmp->pixels[1];
1251 pict.linesize[0] = vp->bmp->pitches[0];
1252 pict.linesize[1] = vp->bmp->pitches[2];
1253 pict.linesize[2] = vp->bmp->pitches[1];
1254 if (img_convert_ctx == NULL) {
1255 img_convert_ctx = sws_getContext(is->video_st->codec->width,
1256 is->video_st->codec->height, is->video_st->codec->pix_fmt,
1257 is->video_st->codec->width, is->video_st->codec->height,
1258 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1259 if (img_convert_ctx == NULL) {
1260 fprintf(stderr, "Cannot initialize the conversion context\n");
1264 sws_scale(img_convert_ctx, src_frame->data, src_frame->linesize,
1265 0, is->video_st->codec->height, pict.data, pict.linesize);
1266 /* update the bitmap content */
1267 SDL_UnlockYUVOverlay(vp->bmp);
1271 /* now we can update the picture count */
1272 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1273 is->pictq_windex = 0;
1274 SDL_LockMutex(is->pictq_mutex);
1276 SDL_UnlockMutex(is->pictq_mutex);
1282 * compute the exact PTS for the picture if it is omitted in the stream
1283 * @param pts1 the dts of the pkt / pts of the frame
1285 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
1287 double frame_delay, pts;
1292 /* update video clock with pts, if present */
1293 is->video_clock = pts;
1295 pts = is->video_clock;
1297 /* update video clock for next frame */
1298 frame_delay = av_q2d(is->video_st->codec->time_base);
1299 /* for MPEG2, the frame can be repeated, so we update the
1300 clock accordingly */
1301 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1302 is->video_clock += frame_delay;
1304 #if defined(DEBUG_SYNC) && 0
1307 if (src_frame->pict_type == FF_B_TYPE)
1309 else if (src_frame->pict_type == FF_I_TYPE)
1313 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1317 return queue_picture(is, src_frame, pts);
1320 static uint64_t global_video_pkt_pts= AV_NOPTS_VALUE;
1322 static int my_get_buffer(struct AVCodecContext *c, AVFrame *pic){
1323 int ret= avcodec_default_get_buffer(c, pic);
1324 uint64_t *pts= av_malloc(sizeof(uint64_t));
1325 *pts= global_video_pkt_pts;
1330 static void my_release_buffer(struct AVCodecContext *c, AVFrame *pic){
1331 if(pic) av_freep(&pic->opaque);
1332 avcodec_default_release_buffer(c, pic);
1335 static int video_thread(void *arg)
1337 VideoState *is = arg;
1338 AVPacket pkt1, *pkt = &pkt1;
1339 int len1, got_picture;
1340 AVFrame *frame= avcodec_alloc_frame();
1344 while (is->paused && !is->videoq.abort_request) {
1347 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1350 if(pkt->data == flush_pkt.data){
1351 avcodec_flush_buffers(is->video_st->codec);
1355 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1356 this packet, if any */
1357 global_video_pkt_pts= pkt->pts;
1358 len1 = avcodec_decode_video(is->video_st->codec,
1359 frame, &got_picture,
1360 pkt->data, pkt->size);
1362 if( (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
1363 && frame->opaque && *(uint64_t*)frame->opaque != AV_NOPTS_VALUE)
1364 pts= *(uint64_t*)frame->opaque;
1365 else if(pkt->dts != AV_NOPTS_VALUE)
1369 pts *= av_q2d(is->video_st->time_base);
1374 if (output_picture2(is, frame, pts) < 0)
1377 av_free_packet(pkt);
1380 stream_pause(cur_stream);
1387 static int subtitle_thread(void *arg)
1389 VideoState *is = arg;
1391 AVPacket pkt1, *pkt = &pkt1;
1392 int len1, got_subtitle;
1395 int r, g, b, y, u, v, a;
1398 while (is->paused && !is->subtitleq.abort_request) {
1401 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1404 if(pkt->data == flush_pkt.data){
1405 avcodec_flush_buffers(is->subtitle_st->codec);
1408 SDL_LockMutex(is->subpq_mutex);
1409 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1410 !is->subtitleq.abort_request) {
1411 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1413 SDL_UnlockMutex(is->subpq_mutex);
1415 if (is->subtitleq.abort_request)
1418 sp = &is->subpq[is->subpq_windex];
1420 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1421 this packet, if any */
1423 if (pkt->pts != AV_NOPTS_VALUE)
1424 pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1426 len1 = avcodec_decode_subtitle(is->subtitle_st->codec,
1427 &sp->sub, &got_subtitle,
1428 pkt->data, pkt->size);
1431 if (got_subtitle && sp->sub.format == 0) {
1434 for (i = 0; i < sp->sub.num_rects; i++)
1436 for (j = 0; j < sp->sub.rects[i].nb_colors; j++)
1438 RGBA_IN(r, g, b, a, sp->sub.rects[i].rgba_palette + j);
1439 y = RGB_TO_Y_CCIR(r, g, b);
1440 u = RGB_TO_U_CCIR(r, g, b, 0);
1441 v = RGB_TO_V_CCIR(r, g, b, 0);
1442 YUVA_OUT(sp->sub.rects[i].rgba_palette + j, y, u, v, a);
1446 /* now we can update the picture count */
1447 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1448 is->subpq_windex = 0;
1449 SDL_LockMutex(is->subpq_mutex);
1451 SDL_UnlockMutex(is->subpq_mutex);
1453 av_free_packet(pkt);
1456 // stream_pause(cur_stream);
1462 /* copy samples for viewing in editor window */
1463 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1465 int size, len, channels;
1467 channels = is->audio_st->codec->channels;
1469 size = samples_size / sizeof(short);
1471 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1474 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1476 is->sample_array_index += len;
1477 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1478 is->sample_array_index = 0;
1483 /* return the new audio buffer size (samples can be added or deleted
1484 to get better sync if video or external master clock) */
1485 static int synchronize_audio(VideoState *is, short *samples,
1486 int samples_size1, double pts)
1488 int n, samples_size;
1491 n = 2 * is->audio_st->codec->channels;
1492 samples_size = samples_size1;
1494 /* if not master, then we try to remove or add samples to correct the clock */
1495 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1496 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1497 double diff, avg_diff;
1498 int wanted_size, min_size, max_size, nb_samples;
1500 ref_clock = get_master_clock(is);
1501 diff = get_audio_clock(is) - ref_clock;
1503 if (diff < AV_NOSYNC_THRESHOLD) {
1504 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1505 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1506 /* not enough measures to have a correct estimate */
1507 is->audio_diff_avg_count++;
1509 /* estimate the A-V difference */
1510 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1512 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1513 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1514 nb_samples = samples_size / n;
1516 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1517 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1518 if (wanted_size < min_size)
1519 wanted_size = min_size;
1520 else if (wanted_size > max_size)
1521 wanted_size = max_size;
1523 /* add or remove samples to correction the synchro */
1524 if (wanted_size < samples_size) {
1525 /* remove samples */
1526 samples_size = wanted_size;
1527 } else if (wanted_size > samples_size) {
1528 uint8_t *samples_end, *q;
1532 nb = (samples_size - wanted_size);
1533 samples_end = (uint8_t *)samples + samples_size - n;
1534 q = samples_end + n;
1536 memcpy(q, samples_end, n);
1540 samples_size = wanted_size;
1544 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1545 diff, avg_diff, samples_size - samples_size1,
1546 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1550 /* too big difference : may be initial PTS errors, so
1552 is->audio_diff_avg_count = 0;
1553 is->audio_diff_cum = 0;
1557 return samples_size;
1560 /* decode one audio frame and returns its uncompressed size */
1561 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, int buf_size, double *pts_ptr)
1563 AVPacket *pkt = &is->audio_pkt;
1564 int n, len1, data_size;
1568 /* NOTE: the audio packet can contain several frames */
1569 while (is->audio_pkt_size > 0) {
1570 data_size = buf_size;
1571 len1 = avcodec_decode_audio2(is->audio_st->codec,
1572 (int16_t *)audio_buf, &data_size,
1573 is->audio_pkt_data, is->audio_pkt_size);
1575 /* if error, we skip the frame */
1576 is->audio_pkt_size = 0;
1580 is->audio_pkt_data += len1;
1581 is->audio_pkt_size -= len1;
1584 /* if no pts, then compute it */
1585 pts = is->audio_clock;
1587 n = 2 * is->audio_st->codec->channels;
1588 is->audio_clock += (double)data_size /
1589 (double)(n * is->audio_st->codec->sample_rate);
1590 #if defined(DEBUG_SYNC)
1592 static double last_clock;
1593 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1594 is->audio_clock - last_clock,
1595 is->audio_clock, pts);
1596 last_clock = is->audio_clock;
1602 /* free the current packet */
1604 av_free_packet(pkt);
1606 if (is->paused || is->audioq.abort_request) {
1610 /* read next packet */
1611 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1613 if(pkt->data == flush_pkt.data){
1614 avcodec_flush_buffers(is->audio_st->codec);
1618 is->audio_pkt_data = pkt->data;
1619 is->audio_pkt_size = pkt->size;
1621 /* if update the audio clock with the pts */
1622 if (pkt->pts != AV_NOPTS_VALUE) {
1623 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1628 /* get the current audio output buffer size, in samples. With SDL, we
1629 cannot have a precise information */
1630 static int audio_write_get_buf_size(VideoState *is)
1632 return is->audio_buf_size - is->audio_buf_index;
1636 /* prepare a new audio buffer */
1637 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1639 VideoState *is = opaque;
1640 int audio_size, len1;
1643 audio_callback_time = av_gettime();
1646 if (is->audio_buf_index >= is->audio_buf_size) {
1647 audio_size = audio_decode_frame(is, is->audio_buf, sizeof(is->audio_buf), &pts);
1648 if (audio_size < 0) {
1649 /* if error, just output silence */
1650 is->audio_buf_size = 1024;
1651 memset(is->audio_buf, 0, is->audio_buf_size);
1654 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1655 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1657 is->audio_buf_size = audio_size;
1659 is->audio_buf_index = 0;
1661 len1 = is->audio_buf_size - is->audio_buf_index;
1664 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1667 is->audio_buf_index += len1;
1671 /* open a given stream. Return 0 if OK */
1672 static int stream_component_open(VideoState *is, int stream_index)
1674 AVFormatContext *ic = is->ic;
1675 AVCodecContext *enc;
1677 SDL_AudioSpec wanted_spec, spec;
1679 if (stream_index < 0 || stream_index >= ic->nb_streams)
1681 enc = ic->streams[stream_index]->codec;
1683 /* prepare audio output */
1684 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1685 wanted_spec.freq = enc->sample_rate;
1686 wanted_spec.format = AUDIO_S16SYS;
1687 /* hack for AC3. XXX: suppress that */
1688 if (enc->channels > 2)
1690 wanted_spec.channels = enc->channels;
1691 wanted_spec.silence = 0;
1692 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1693 wanted_spec.callback = sdl_audio_callback;
1694 wanted_spec.userdata = is;
1695 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1696 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1699 is->audio_hw_buf_size = spec.size;
1702 codec = avcodec_find_decoder(enc->codec_id);
1703 enc->debug_mv = debug_mv;
1705 enc->workaround_bugs = workaround_bugs;
1706 enc->lowres = lowres;
1707 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1708 enc->idct_algo= idct;
1709 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1710 enc->skip_frame= skip_frame;
1711 enc->skip_idct= skip_idct;
1712 enc->skip_loop_filter= skip_loop_filter;
1713 enc->error_resilience= error_resilience;
1714 enc->error_concealment= error_concealment;
1716 avcodec_open(enc, codec) < 0)
1719 avcodec_thread_init(enc, thread_count);
1720 enc->thread_count= thread_count;
1721 switch(enc->codec_type) {
1722 case CODEC_TYPE_AUDIO:
1723 is->audio_stream = stream_index;
1724 is->audio_st = ic->streams[stream_index];
1725 is->audio_buf_size = 0;
1726 is->audio_buf_index = 0;
1728 /* init averaging filter */
1729 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1730 is->audio_diff_avg_count = 0;
1731 /* since we do not have a precise anough audio fifo fullness,
1732 we correct audio sync only if larger than this threshold */
1733 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1735 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1736 packet_queue_init(&is->audioq);
1739 case CODEC_TYPE_VIDEO:
1740 is->video_stream = stream_index;
1741 is->video_st = ic->streams[stream_index];
1743 is->frame_last_delay = 40e-3;
1744 is->frame_timer = (double)av_gettime() / 1000000.0;
1745 is->video_current_pts_time = av_gettime();
1747 packet_queue_init(&is->videoq);
1748 is->video_tid = SDL_CreateThread(video_thread, is);
1750 enc-> get_buffer= my_get_buffer;
1751 enc->release_buffer= my_release_buffer;
1753 case CODEC_TYPE_SUBTITLE:
1754 is->subtitle_stream = stream_index;
1755 is->subtitle_st = ic->streams[stream_index];
1756 packet_queue_init(&is->subtitleq);
1758 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
1766 static void stream_component_close(VideoState *is, int stream_index)
1768 AVFormatContext *ic = is->ic;
1769 AVCodecContext *enc;
1771 if (stream_index < 0 || stream_index >= ic->nb_streams)
1773 enc = ic->streams[stream_index]->codec;
1775 switch(enc->codec_type) {
1776 case CODEC_TYPE_AUDIO:
1777 packet_queue_abort(&is->audioq);
1781 packet_queue_end(&is->audioq);
1783 case CODEC_TYPE_VIDEO:
1784 packet_queue_abort(&is->videoq);
1786 /* note: we also signal this mutex to make sure we deblock the
1787 video thread in all cases */
1788 SDL_LockMutex(is->pictq_mutex);
1789 SDL_CondSignal(is->pictq_cond);
1790 SDL_UnlockMutex(is->pictq_mutex);
1792 SDL_WaitThread(is->video_tid, NULL);
1794 packet_queue_end(&is->videoq);
1796 case CODEC_TYPE_SUBTITLE:
1797 packet_queue_abort(&is->subtitleq);
1799 /* note: we also signal this mutex to make sure we deblock the
1800 video thread in all cases */
1801 SDL_LockMutex(is->subpq_mutex);
1802 is->subtitle_stream_changed = 1;
1804 SDL_CondSignal(is->subpq_cond);
1805 SDL_UnlockMutex(is->subpq_mutex);
1807 SDL_WaitThread(is->subtitle_tid, NULL);
1809 packet_queue_end(&is->subtitleq);
1816 switch(enc->codec_type) {
1817 case CODEC_TYPE_AUDIO:
1818 is->audio_st = NULL;
1819 is->audio_stream = -1;
1821 case CODEC_TYPE_VIDEO:
1822 is->video_st = NULL;
1823 is->video_stream = -1;
1825 case CODEC_TYPE_SUBTITLE:
1826 is->subtitle_st = NULL;
1827 is->subtitle_stream = -1;
1834 static void dump_stream_info(const AVFormatContext *s)
1837 fprintf(stderr, "Track: %d\n", s->track);
1838 if (s->title[0] != '\0')
1839 fprintf(stderr, "Title: %s\n", s->title);
1840 if (s->author[0] != '\0')
1841 fprintf(stderr, "Author: %s\n", s->author);
1842 if (s->copyright[0] != '\0')
1843 fprintf(stderr, "Copyright: %s\n", s->copyright);
1844 if (s->comment[0] != '\0')
1845 fprintf(stderr, "Comment: %s\n", s->comment);
1846 if (s->album[0] != '\0')
1847 fprintf(stderr, "Album: %s\n", s->album);
1849 fprintf(stderr, "Year: %d\n", s->year);
1850 if (s->genre[0] != '\0')
1851 fprintf(stderr, "Genre: %s\n", s->genre);
1854 /* since we have only one decoding thread, we can use a global
1855 variable instead of a thread local variable */
1856 static VideoState *global_video_state;
1858 static int decode_interrupt_cb(void)
1860 return (global_video_state && global_video_state->abort_request);
1863 /* this thread gets the stream from the disk or the network */
1864 static int decode_thread(void *arg)
1866 VideoState *is = arg;
1867 AVFormatContext *ic;
1868 int err, i, ret, video_index, audio_index, use_play;
1869 AVPacket pkt1, *pkt = &pkt1;
1870 AVFormatParameters params, *ap = ¶ms;
1874 is->video_stream = -1;
1875 is->audio_stream = -1;
1876 is->subtitle_stream = -1;
1878 global_video_state = is;
1879 url_set_interrupt_cb(decode_interrupt_cb);
1881 memset(ap, 0, sizeof(*ap));
1882 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1885 ap->width = frame_width;
1886 ap->height= frame_height;
1887 ap->time_base= (AVRational){1, 25};
1888 ap->pix_fmt = frame_pix_fmt;
1890 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1892 print_error(is->filename, err);
1897 #ifdef CONFIG_RTSP_DEMUXER
1898 use_play = (ic->iformat == &rtsp_demuxer);
1904 ic->flags |= AVFMT_FLAG_GENPTS;
1907 err = av_find_stream_info(ic);
1909 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1913 ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
1916 /* if seeking requested, we execute it */
1917 if (start_time != AV_NOPTS_VALUE) {
1920 timestamp = start_time;
1921 /* add the stream start time */
1922 if (ic->start_time != AV_NOPTS_VALUE)
1923 timestamp += ic->start_time;
1924 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1926 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1927 is->filename, (double)timestamp / AV_TIME_BASE);
1931 /* now we can begin to play (RTSP stream only) */
1935 err = av_find_stream_info(ic);
1937 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1943 for(i = 0; i < ic->nb_streams; i++) {
1944 AVCodecContext *enc = ic->streams[i]->codec;
1945 switch(enc->codec_type) {
1946 case CODEC_TYPE_AUDIO:
1947 if ((audio_index < 0 || wanted_audio_stream-- > 0) && !audio_disable)
1950 case CODEC_TYPE_VIDEO:
1951 if (video_index < 0 && !video_disable)
1959 dump_format(ic, 0, is->filename, 0);
1960 dump_stream_info(ic);
1963 /* open the streams */
1964 if (audio_index >= 0) {
1965 stream_component_open(is, audio_index);
1968 if (video_index >= 0) {
1969 stream_component_open(is, video_index);
1971 if (!display_disable)
1975 if (is->video_stream < 0 && is->audio_stream < 0) {
1976 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1982 if (is->abort_request)
1984 if (is->paused != is->last_paused) {
1985 is->last_paused = is->paused;
1991 #ifdef CONFIG_RTSP_DEMUXER
1992 if (is->paused && ic->iformat == &rtsp_demuxer) {
1993 /* wait 10 ms to avoid trying to get another packet */
2000 int stream_index= -1;
2001 int64_t seek_target= is->seek_pos;
2003 if (is-> video_stream >= 0) stream_index= is-> video_stream;
2004 else if(is-> audio_stream >= 0) stream_index= is-> audio_stream;
2005 else if(is->subtitle_stream >= 0) stream_index= is->subtitle_stream;
2007 if(stream_index>=0){
2008 seek_target= av_rescale_q(seek_target, AV_TIME_BASE_Q, ic->streams[stream_index]->time_base);
2011 ret = av_seek_frame(is->ic, stream_index, seek_target, is->seek_flags);
2013 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2015 if (is->audio_stream >= 0) {
2016 packet_queue_flush(&is->audioq);
2017 packet_queue_put(&is->audioq, &flush_pkt);
2019 if (is->subtitle_stream >= 0) {
2020 packet_queue_flush(&is->subtitleq);
2021 packet_queue_put(&is->subtitleq, &flush_pkt);
2023 if (is->video_stream >= 0) {
2024 packet_queue_flush(&is->videoq);
2025 packet_queue_put(&is->videoq, &flush_pkt);
2031 /* if the queue are full, no need to read more */
2032 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
2033 is->videoq.size > MAX_VIDEOQ_SIZE ||
2034 is->subtitleq.size > MAX_SUBTITLEQ_SIZE ||
2035 url_feof(&ic->pb)) {
2040 ret = av_read_frame(ic, pkt);
2042 if (url_ferror(&ic->pb) == 0) {
2043 SDL_Delay(100); /* wait for user event */
2048 if (pkt->stream_index == is->audio_stream) {
2049 packet_queue_put(&is->audioq, pkt);
2050 } else if (pkt->stream_index == is->video_stream) {
2051 packet_queue_put(&is->videoq, pkt);
2052 } else if (pkt->stream_index == is->subtitle_stream) {
2053 packet_queue_put(&is->subtitleq, pkt);
2055 av_free_packet(pkt);
2058 /* wait until the end */
2059 while (!is->abort_request) {
2065 /* disable interrupting */
2066 global_video_state = NULL;
2068 /* close each stream */
2069 if (is->audio_stream >= 0)
2070 stream_component_close(is, is->audio_stream);
2071 if (is->video_stream >= 0)
2072 stream_component_close(is, is->video_stream);
2073 if (is->subtitle_stream >= 0)
2074 stream_component_close(is, is->subtitle_stream);
2076 av_close_input_file(is->ic);
2077 is->ic = NULL; /* safety */
2079 url_set_interrupt_cb(NULL);
2084 event.type = FF_QUIT_EVENT;
2085 event.user.data1 = is;
2086 SDL_PushEvent(&event);
2091 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2095 is = av_mallocz(sizeof(VideoState));
2098 av_strlcpy(is->filename, filename, sizeof(is->filename));
2099 is->iformat = iformat;
2103 /* start video display */
2104 is->pictq_mutex = SDL_CreateMutex();
2105 is->pictq_cond = SDL_CreateCond();
2107 is->subpq_mutex = SDL_CreateMutex();
2108 is->subpq_cond = SDL_CreateCond();
2110 /* add the refresh timer to draw the picture */
2111 schedule_refresh(is, 40);
2113 is->av_sync_type = av_sync_type;
2114 is->parse_tid = SDL_CreateThread(decode_thread, is);
2115 if (!is->parse_tid) {
2122 static void stream_close(VideoState *is)
2126 /* XXX: use a special url_shutdown call to abort parse cleanly */
2127 is->abort_request = 1;
2128 SDL_WaitThread(is->parse_tid, NULL);
2130 /* free all pictures */
2131 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2134 SDL_FreeYUVOverlay(vp->bmp);
2138 SDL_DestroyMutex(is->pictq_mutex);
2139 SDL_DestroyCond(is->pictq_cond);
2140 SDL_DestroyMutex(is->subpq_mutex);
2141 SDL_DestroyCond(is->subpq_cond);
2144 static void stream_cycle_channel(VideoState *is, int codec_type)
2146 AVFormatContext *ic = is->ic;
2147 int start_index, stream_index;
2150 if (codec_type == CODEC_TYPE_VIDEO)
2151 start_index = is->video_stream;
2152 else if (codec_type == CODEC_TYPE_AUDIO)
2153 start_index = is->audio_stream;
2155 start_index = is->subtitle_stream;
2156 if (start_index < (codec_type == CODEC_TYPE_SUBTITLE ? -1 : 0))
2158 stream_index = start_index;
2160 if (++stream_index >= is->ic->nb_streams)
2162 if (codec_type == CODEC_TYPE_SUBTITLE)
2169 if (stream_index == start_index)
2171 st = ic->streams[stream_index];
2172 if (st->codec->codec_type == codec_type) {
2173 /* check that parameters are OK */
2174 switch(codec_type) {
2175 case CODEC_TYPE_AUDIO:
2176 if (st->codec->sample_rate != 0 &&
2177 st->codec->channels != 0)
2180 case CODEC_TYPE_VIDEO:
2181 case CODEC_TYPE_SUBTITLE:
2189 stream_component_close(is, start_index);
2190 stream_component_open(is, stream_index);
2194 static void toggle_full_screen(void)
2196 is_full_screen = !is_full_screen;
2197 if (!fs_screen_width) {
2198 /* use default SDL method */
2199 // SDL_WM_ToggleFullScreen(screen);
2201 video_open(cur_stream);
2204 static void toggle_pause(void)
2207 stream_pause(cur_stream);
2211 static void step_to_next_frame(void)
2214 if (cur_stream->paused)
2215 cur_stream->paused=0;
2216 cur_stream->video_current_pts = get_video_clock(cur_stream);
2221 static void do_exit(void)
2224 stream_close(cur_stream);
2233 static void toggle_audio_display(void)
2236 cur_stream->show_audio = !cur_stream->show_audio;
2240 /* handle an event sent by the GUI */
2241 static void event_loop(void)
2244 double incr, pos, frac;
2247 SDL_WaitEvent(&event);
2248 switch(event.type) {
2250 switch(event.key.keysym.sym) {
2256 toggle_full_screen();
2262 case SDLK_s: //S: Step to next frame
2263 step_to_next_frame();
2267 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
2271 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
2275 stream_cycle_channel(cur_stream, CODEC_TYPE_SUBTITLE);
2278 toggle_audio_display();
2293 if (seek_by_bytes) {
2294 pos = url_ftell(&cur_stream->ic->pb);
2295 if (cur_stream->ic->bit_rate)
2296 incr *= cur_stream->ic->bit_rate / 60.0;
2300 stream_seek(cur_stream, pos, incr);
2302 pos = get_master_clock(cur_stream);
2304 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
2312 case SDL_MOUSEBUTTONDOWN:
2315 int tns, thh, tmm, tss;
2316 tns = cur_stream->ic->duration/1000000LL;
2318 tmm = (tns%3600)/60;
2320 frac = (double)event.button.x/(double)cur_stream->width;
2325 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2326 hh, mm, ss, thh, tmm, tss);
2327 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
2330 case SDL_VIDEORESIZE:
2332 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2333 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2334 screen_width = cur_stream->width = event.resize.w;
2335 screen_height= cur_stream->height= event.resize.h;
2342 case FF_ALLOC_EVENT:
2343 video_open(event.user.data1);
2344 alloc_picture(event.user.data1);
2346 case FF_REFRESH_EVENT:
2347 video_refresh_timer(event.user.data1);
2355 static void opt_frame_size(const char *arg)
2357 if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2358 fprintf(stderr, "Incorrect frame size\n");
2361 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2362 fprintf(stderr, "Frame size must be a multiple of 2\n");
2367 static void opt_width(const char *arg)
2369 screen_width = atoi(arg);
2370 if(screen_width<=0){
2371 fprintf(stderr, "invalid width\n");
2376 static void opt_height(const char *arg)
2378 screen_height = atoi(arg);
2379 if(screen_height<=0){
2380 fprintf(stderr, "invalid height\n");
2385 static void opt_format(const char *arg)
2387 file_iformat = av_find_input_format(arg);
2388 if (!file_iformat) {
2389 fprintf(stderr, "Unknown input format: %s\n", arg);
2394 static void opt_frame_pix_fmt(const char *arg)
2396 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2399 #ifdef CONFIG_RTSP_DEMUXER
2400 static void opt_rtp_tcp(void)
2402 /* only tcp protocol */
2403 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
2407 static void opt_sync(const char *arg)
2409 if (!strcmp(arg, "audio"))
2410 av_sync_type = AV_SYNC_AUDIO_MASTER;
2411 else if (!strcmp(arg, "video"))
2412 av_sync_type = AV_SYNC_VIDEO_MASTER;
2413 else if (!strcmp(arg, "ext"))
2414 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2419 static void opt_seek(const char *arg)
2421 start_time = parse_date(arg, 1);
2424 static void opt_debug(const char *arg)
2430 static void opt_vismv(const char *arg)
2432 debug_mv = atoi(arg);
2435 static void opt_thread_count(const char *arg)
2437 thread_count= atoi(arg);
2438 #if !defined(HAVE_THREADS)
2439 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2443 const OptionDef options[] = {
2444 { "h", 0, {(void*)show_help}, "show help" },
2445 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
2446 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
2447 { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2448 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2449 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2450 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2451 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_audio_stream}, "", "" },
2452 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2453 { "bytes", OPT_BOOL, {(void*)&seek_by_bytes}, "seek by bytes" },
2454 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2455 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2456 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2457 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2458 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
2459 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2460 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
2461 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2462 { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2463 { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
2464 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2465 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2466 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2467 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2468 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
2469 { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_resilience}, "set error detection threshold (0-4)", "threshold" },
2470 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
2471 #ifdef CONFIG_RTSP_DEMUXER
2472 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
2474 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2475 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2479 void show_help(void)
2481 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003-2007 Fabrice Bellard, et al.\n"
2482 "usage: ffplay [options] input_file\n"
2483 "Simple media player\n");
2485 show_help_options(options, "Main options:\n",
2487 show_help_options(options, "\nAdvanced options:\n",
2488 OPT_EXPERT, OPT_EXPERT);
2489 printf("\nWhile playing:\n"
2491 "f toggle full screen\n"
2493 "a cycle audio channel\n"
2494 "v cycle video channel\n"
2495 "t cycle subtitle channel\n"
2496 "w show audio waves\n"
2497 "left/right seek backward/forward 10 seconds\n"
2498 "down/up seek backward/forward 1 minute\n"
2499 "mouse click seek to percentage in file corresponding to fraction of width\n"
2504 void parse_arg_file(const char *filename)
2506 if (!strcmp(filename, "-"))
2508 input_filename = filename;
2511 /* Called from the main */
2512 int main(int argc, char **argv)
2516 /* register all codecs, demux and protocols */
2519 parse_options(argc, argv, options);
2521 if (!input_filename)
2524 if (display_disable) {
2527 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2528 #if !defined(__MINGW32__) && !defined(CONFIG_DARWIN)
2529 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 or darwin */
2531 if (SDL_Init (flags)) {
2532 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2536 if (!display_disable) {
2537 #ifdef HAVE_SDL_VIDEO_SIZE
2538 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2539 fs_screen_width = vi->current_w;
2540 fs_screen_height = vi->current_h;
2544 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2545 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
2546 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2547 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2549 av_init_packet(&flush_pkt);
2550 flush_pkt.data= "FLUSH";
2552 cur_stream = stream_open(input_filename, file_iformat);