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
34 #include <SDL_thread.h>
37 #undef main /* We don't want SDL to override our main() */
42 static const char program_name[] = "FFplay";
43 static const int program_birth_year = 2003;
47 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
48 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
49 #define MAX_SUBTITLEQ_SIZE (5 * 16 * 1024)
51 /* SDL audio buffer size, in samples. Should be small to have precise
52 A/V sync as SDL does not have hardware buffer fullness info. */
53 #define SDL_AUDIO_BUFFER_SIZE 1024
55 /* no AV sync correction is done if below the AV sync threshold */
56 #define AV_SYNC_THRESHOLD 0.01
57 /* no AV correction is done if too big error */
58 #define AV_NOSYNC_THRESHOLD 10.0
60 /* maximum audio speed change to get correct sync */
61 #define SAMPLE_CORRECTION_PERCENT_MAX 10
63 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
64 #define AUDIO_DIFF_AVG_NB 20
66 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
67 #define SAMPLE_ARRAY_SIZE (2*65536)
69 static int sws_flags = SWS_BICUBIC;
71 typedef struct PacketQueue {
72 AVPacketList *first_pkt, *last_pkt;
80 #define VIDEO_PICTURE_QUEUE_SIZE 1
81 #define SUBPICTURE_QUEUE_SIZE 4
83 typedef struct VideoPicture {
84 double pts; ///<presentation time stamp for this picture
86 int width, height; /* source height & width */
90 typedef struct SubPicture {
91 double pts; /* presentation time stamp for this picture */
96 AV_SYNC_AUDIO_MASTER, /* default choice */
98 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
101 typedef struct VideoState {
102 SDL_Thread *parse_tid;
103 SDL_Thread *video_tid;
104 AVInputFormat *iformat;
113 int dtg_active_format;
118 double external_clock; /* external clock base */
119 int64_t external_clock_time;
122 double audio_diff_cum; /* used for AV difference average computation */
123 double audio_diff_avg_coef;
124 double audio_diff_threshold;
125 int audio_diff_avg_count;
128 int audio_hw_buf_size;
129 /* samples output by the codec. we reserve more space for avsync
131 DECLARE_ALIGNED(16,uint8_t,audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
132 unsigned int audio_buf_size; /* in bytes */
133 int audio_buf_index; /* in bytes */
135 uint8_t *audio_pkt_data;
138 int show_audio; /* if true, display audio samples */
139 int16_t sample_array[SAMPLE_ARRAY_SIZE];
140 int sample_array_index;
143 SDL_Thread *subtitle_tid;
145 int subtitle_stream_changed;
146 AVStream *subtitle_st;
147 PacketQueue subtitleq;
148 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
149 int subpq_size, subpq_rindex, subpq_windex;
150 SDL_mutex *subpq_mutex;
151 SDL_cond *subpq_cond;
154 double frame_last_pts;
155 double frame_last_delay;
156 double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
160 double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used)
161 int64_t video_current_pts_time; ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
162 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
163 int pictq_size, pictq_rindex, pictq_windex;
164 SDL_mutex *pictq_mutex;
165 SDL_cond *pictq_cond;
167 // QETimer *video_timer;
169 int width, height, xleft, ytop;
172 void show_help(void);
173 static int audio_write_get_buf_size(VideoState *is);
175 /* options specified by the user */
176 static AVInputFormat *file_iformat;
177 static const char *input_filename;
178 static int fs_screen_width;
179 static int fs_screen_height;
180 static int screen_width = 0;
181 static int screen_height = 0;
182 static int frame_width = 0;
183 static int frame_height = 0;
184 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
185 static int audio_disable;
186 static int video_disable;
187 static int wanted_audio_stream= 0;
188 static int wanted_video_stream= 0;
189 static int seek_by_bytes;
190 static int display_disable;
191 static int show_status;
192 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
193 static int64_t start_time = AV_NOPTS_VALUE;
194 static int debug = 0;
195 static int debug_mv = 0;
197 static int thread_count = 1;
198 static int workaround_bugs = 1;
200 static int genpts = 0;
201 static int lowres = 0;
202 static int idct = FF_IDCT_AUTO;
203 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
204 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
205 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
206 static int error_resilience = FF_ER_CAREFUL;
207 static int error_concealment = 3;
208 static int decoder_reorder_pts= 0;
210 /* current context */
211 static int is_full_screen;
212 static VideoState *cur_stream;
213 static int64_t audio_callback_time;
217 #define FF_ALLOC_EVENT (SDL_USEREVENT)
218 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
219 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
223 /* packet queue handling */
224 static void packet_queue_init(PacketQueue *q)
226 memset(q, 0, sizeof(PacketQueue));
227 q->mutex = SDL_CreateMutex();
228 q->cond = SDL_CreateCond();
231 static void packet_queue_flush(PacketQueue *q)
233 AVPacketList *pkt, *pkt1;
235 SDL_LockMutex(q->mutex);
236 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
238 av_free_packet(&pkt->pkt);
245 SDL_UnlockMutex(q->mutex);
248 static void packet_queue_end(PacketQueue *q)
250 packet_queue_flush(q);
251 SDL_DestroyMutex(q->mutex);
252 SDL_DestroyCond(q->cond);
255 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
259 /* duplicate the packet */
260 if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
263 pkt1 = av_malloc(sizeof(AVPacketList));
270 SDL_LockMutex(q->mutex);
276 q->last_pkt->next = pkt1;
279 q->size += pkt1->pkt.size;
280 /* XXX: should duplicate packet data in DV case */
281 SDL_CondSignal(q->cond);
283 SDL_UnlockMutex(q->mutex);
287 static void packet_queue_abort(PacketQueue *q)
289 SDL_LockMutex(q->mutex);
291 q->abort_request = 1;
293 SDL_CondSignal(q->cond);
295 SDL_UnlockMutex(q->mutex);
298 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
299 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
304 SDL_LockMutex(q->mutex);
307 if (q->abort_request) {
314 q->first_pkt = pkt1->next;
318 q->size -= pkt1->pkt.size;
327 SDL_CondWait(q->cond, q->mutex);
330 SDL_UnlockMutex(q->mutex);
334 static inline void fill_rectangle(SDL_Surface *screen,
335 int x, int y, int w, int h, int color)
342 SDL_FillRect(screen, &rect, color);
346 /* draw only the border of a rectangle */
347 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
351 /* fill the background */
355 w2 = s->width - (x + w);
361 h2 = s->height - (y + h);
364 fill_rectangle(screen,
368 fill_rectangle(screen,
369 s->xleft + s->width - w2, s->ytop,
372 fill_rectangle(screen,
373 s->xleft + w1, s->ytop,
374 s->width - w1 - w2, h1,
376 fill_rectangle(screen,
377 s->xleft + w1, s->ytop + s->height - h2,
378 s->width - w1 - w2, h2,
386 #define ONE_HALF (1 << (SCALEBITS - 1))
387 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
389 #define RGB_TO_Y_CCIR(r, g, b) \
390 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
391 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
393 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
394 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
395 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
397 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
398 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
399 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
401 #define ALPHA_BLEND(a, oldp, newp, s)\
402 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
404 #define RGBA_IN(r, g, b, a, s)\
406 unsigned int v = ((const uint32_t *)(s))[0];\
407 a = (v >> 24) & 0xff;\
408 r = (v >> 16) & 0xff;\
409 g = (v >> 8) & 0xff;\
413 #define YUVA_IN(y, u, v, a, s, pal)\
415 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
416 a = (val >> 24) & 0xff;\
417 y = (val >> 16) & 0xff;\
418 u = (val >> 8) & 0xff;\
422 #define YUVA_OUT(d, y, u, v, a)\
424 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
430 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
432 int wrap, wrap3, width2, skip2;
433 int y, u, v, a, u1, v1, a1, w, h;
434 uint8_t *lum, *cb, *cr;
437 int dstx, dsty, dstw, dsth;
439 dstx = FFMIN(FFMAX(rect->x, 0), imgw);
440 dstw = FFMIN(FFMAX(rect->w, 0), imgw - dstx);
441 dsty = FFMIN(FFMAX(rect->y, 0), imgh);
442 dsth = FFMIN(FFMAX(rect->h, 0), imgh - dsty);
443 lum = dst->data[0] + dsty * dst->linesize[0];
444 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
445 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
447 width2 = (dstw + 1) >> 1;
449 wrap = dst->linesize[0];
450 wrap3 = rect->linesize;
452 pal = rect->rgba_palette; /* Now in YCrCb! */
460 YUVA_IN(y, u, v, a, p, pal);
461 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
462 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
463 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
469 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
470 YUVA_IN(y, u, v, a, p, pal);
474 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
476 YUVA_IN(y, u, v, a, p + BPP, pal);
480 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
481 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
482 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
489 YUVA_IN(y, u, v, a, p, pal);
490 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
491 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
492 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
494 p += wrap3 + (wrap3 - dstw * BPP);
495 lum += wrap + (wrap - dstw - dstx);
496 cb += dst->linesize[1] - width2 - skip2;
497 cr += dst->linesize[2] - width2 - skip2;
499 for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
505 YUVA_IN(y, u, v, a, p, pal);
509 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
512 YUVA_IN(y, u, v, a, p, pal);
516 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
517 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
518 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
524 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
525 YUVA_IN(y, u, v, a, p, pal);
529 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
531 YUVA_IN(y, u, v, a, p, pal);
535 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
539 YUVA_IN(y, u, v, a, p, pal);
543 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
545 YUVA_IN(y, u, v, a, p, pal);
549 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
551 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
552 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
556 p += -wrap3 + 2 * BPP;
560 YUVA_IN(y, u, v, a, p, pal);
564 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
567 YUVA_IN(y, u, v, a, p, pal);
571 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
572 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
573 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
579 p += wrap3 + (wrap3 - dstw * BPP);
580 lum += wrap + (wrap - dstw - dstx);
581 cb += dst->linesize[1] - width2 - skip2;
582 cr += dst->linesize[2] - width2 - skip2;
584 /* handle odd height */
591 YUVA_IN(y, u, v, a, p, pal);
592 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
593 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
594 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
600 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
601 YUVA_IN(y, u, v, a, p, pal);
605 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
607 YUVA_IN(y, u, v, a, p + BPP, pal);
611 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
612 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
613 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
620 YUVA_IN(y, u, v, a, p, pal);
621 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
622 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
623 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
628 static void free_subpicture(SubPicture *sp)
632 for (i = 0; i < sp->sub.num_rects; i++)
634 av_free(sp->sub.rects[i].bitmap);
635 av_free(sp->sub.rects[i].rgba_palette);
638 av_free(sp->sub.rects);
640 memset(&sp->sub, 0, sizeof(AVSubtitle));
643 static void video_image_display(VideoState *is)
649 int width, height, x, y;
653 vp = &is->pictq[is->pictq_rindex];
655 /* XXX: use variable in the frame */
656 if (is->video_st->codec->sample_aspect_ratio.num == 0)
659 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio)
660 * is->video_st->codec->width / is->video_st->codec->height;;
661 if (aspect_ratio <= 0.0)
662 aspect_ratio = (float)is->video_st->codec->width /
663 (float)is->video_st->codec->height;
664 /* if an active format is indicated, then it overrides the
667 if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
668 is->dtg_active_format = is->video_st->codec->dtg_active_format;
669 printf("dtg_active_format=%d\n", is->dtg_active_format);
673 switch(is->video_st->codec->dtg_active_format) {
674 case FF_DTG_AFD_SAME:
679 aspect_ratio = 4.0 / 3.0;
681 case FF_DTG_AFD_16_9:
682 aspect_ratio = 16.0 / 9.0;
684 case FF_DTG_AFD_14_9:
685 aspect_ratio = 14.0 / 9.0;
687 case FF_DTG_AFD_4_3_SP_14_9:
688 aspect_ratio = 14.0 / 9.0;
690 case FF_DTG_AFD_16_9_SP_14_9:
691 aspect_ratio = 14.0 / 9.0;
693 case FF_DTG_AFD_SP_4_3:
694 aspect_ratio = 4.0 / 3.0;
701 if (is->subpq_size > 0)
703 sp = &is->subpq[is->subpq_rindex];
705 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
707 SDL_LockYUVOverlay (vp->bmp);
709 pict.data[0] = vp->bmp->pixels[0];
710 pict.data[1] = vp->bmp->pixels[2];
711 pict.data[2] = vp->bmp->pixels[1];
713 pict.linesize[0] = vp->bmp->pitches[0];
714 pict.linesize[1] = vp->bmp->pitches[2];
715 pict.linesize[2] = vp->bmp->pitches[1];
717 for (i = 0; i < sp->sub.num_rects; i++)
718 blend_subrect(&pict, &sp->sub.rects[i],
719 vp->bmp->w, vp->bmp->h);
721 SDL_UnlockYUVOverlay (vp->bmp);
727 /* XXX: we suppose the screen has a 1.0 pixel ratio */
729 width = ((int)rint(height * aspect_ratio)) & -3;
730 if (width > is->width) {
732 height = ((int)rint(width / aspect_ratio)) & -3;
734 x = (is->width - width) / 2;
735 y = (is->height - height) / 2;
736 if (!is->no_background) {
737 /* fill the background */
738 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
740 is->no_background = 0;
742 rect.x = is->xleft + x;
743 rect.y = is->ytop + y;
746 SDL_DisplayYUVOverlay(vp->bmp, &rect);
749 fill_rectangle(screen,
750 is->xleft, is->ytop, is->width, is->height,
751 QERGB(0x00, 0x00, 0x00));
756 static inline int compute_mod(int a, int b)
765 static void video_audio_display(VideoState *s)
767 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
768 int ch, channels, h, h2, bgcolor, fgcolor;
771 /* compute display index : center on currently output samples */
772 channels = s->audio_st->codec->channels;
773 nb_display_channels = channels;
776 delay = audio_write_get_buf_size(s);
779 /* to be more precise, we take into account the time spent since
780 the last buffer computation */
781 if (audio_callback_time) {
782 time_diff = av_gettime() - audio_callback_time;
783 delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
786 delay -= s->width / 2;
787 if (delay < s->width)
790 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
793 for(i=0; i<1000; i+=channels){
794 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
795 int a= s->sample_array[idx];
796 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
797 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
798 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
800 if(h<score && (b^c)<0){
806 s->last_i_start = i_start;
808 i_start = s->last_i_start;
811 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
812 fill_rectangle(screen,
813 s->xleft, s->ytop, s->width, s->height,
816 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
818 /* total height for one channel */
819 h = s->height / nb_display_channels;
820 /* graph height / 2 */
822 for(ch = 0;ch < nb_display_channels; ch++) {
824 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
825 for(x = 0; x < s->width; x++) {
826 y = (s->sample_array[i] * h2) >> 15;
833 fill_rectangle(screen,
834 s->xleft + x, ys, 1, y,
837 if (i >= SAMPLE_ARRAY_SIZE)
838 i -= SAMPLE_ARRAY_SIZE;
842 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
844 for(ch = 1;ch < nb_display_channels; ch++) {
845 y = s->ytop + ch * h;
846 fill_rectangle(screen,
847 s->xleft, y, s->width, 1,
850 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
853 static int video_open(VideoState *is){
854 int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
857 if(is_full_screen) flags |= SDL_FULLSCREEN;
858 else flags |= SDL_RESIZABLE;
860 if (is_full_screen && fs_screen_width) {
862 h = fs_screen_height;
863 } else if(!is_full_screen && screen_width){
866 }else if (is->video_st && is->video_st->codec->width){
867 w = is->video_st->codec->width;
868 h = is->video_st->codec->height;
874 screen = SDL_SetVideoMode(w, h, 0, flags);
876 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
877 screen = SDL_SetVideoMode(w, h, 24, flags);
880 fprintf(stderr, "SDL: could not set video mode - exiting\n");
883 SDL_WM_SetCaption("FFplay", "FFplay");
885 is->width = screen->w;
886 is->height = screen->h;
891 /* display the current picture, if any */
892 static void video_display(VideoState *is)
895 video_open(cur_stream);
896 if (is->audio_st && is->show_audio)
897 video_audio_display(is);
898 else if (is->video_st)
899 video_image_display(is);
902 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
905 event.type = FF_REFRESH_EVENT;
906 event.user.data1 = opaque;
907 SDL_PushEvent(&event);
908 return 0; /* 0 means stop timer */
911 /* schedule a video refresh in 'delay' ms */
912 static void schedule_refresh(VideoState *is, int delay)
914 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
917 /* get the current audio clock value */
918 static double get_audio_clock(VideoState *is)
921 int hw_buf_size, bytes_per_sec;
922 pts = is->audio_clock;
923 hw_buf_size = audio_write_get_buf_size(is);
926 bytes_per_sec = is->audio_st->codec->sample_rate *
927 2 * is->audio_st->codec->channels;
930 pts -= (double)hw_buf_size / bytes_per_sec;
934 /* get the current video clock value */
935 static double get_video_clock(VideoState *is)
941 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
943 return is->video_current_pts + delta;
946 /* get the current external clock value */
947 static double get_external_clock(VideoState *is)
951 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
954 /* get the current master clock value */
955 static double get_master_clock(VideoState *is)
959 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
961 val = get_video_clock(is);
963 val = get_audio_clock(is);
964 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
966 val = get_audio_clock(is);
968 val = get_video_clock(is);
970 val = get_external_clock(is);
975 /* seek in the stream */
976 static void stream_seek(VideoState *is, int64_t pos, int rel)
980 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
982 is->seek_flags |= AVSEEK_FLAG_BYTE;
987 /* pause or resume the video */
988 static void stream_pause(VideoState *is)
990 is->paused = !is->paused;
992 is->video_current_pts = get_video_clock(is);
993 is->frame_timer += (av_gettime() - is->video_current_pts_time) / 1000000.0;
997 /* called to display each frame */
998 static void video_refresh_timer(void *opaque)
1000 VideoState *is = opaque;
1002 double actual_delay, delay, sync_threshold, ref_clock, diff;
1004 SubPicture *sp, *sp2;
1007 if (is->pictq_size == 0) {
1008 /* if no picture, need to wait */
1009 schedule_refresh(is, 1);
1011 /* dequeue the picture */
1012 vp = &is->pictq[is->pictq_rindex];
1014 /* update current video pts */
1015 is->video_current_pts = vp->pts;
1016 is->video_current_pts_time = av_gettime();
1018 /* compute nominal delay */
1019 delay = vp->pts - is->frame_last_pts;
1020 if (delay <= 0 || delay >= 2.0) {
1021 /* if incorrect delay, use previous one */
1022 delay = is->frame_last_delay;
1024 is->frame_last_delay = delay;
1025 is->frame_last_pts = vp->pts;
1027 /* update delay to follow master synchronisation source */
1028 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1029 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1030 /* if video is slave, we try to correct big delays by
1031 duplicating or deleting a frame */
1032 ref_clock = get_master_clock(is);
1033 diff = vp->pts - ref_clock;
1035 /* skip or repeat frame. We take into account the
1036 delay to compute the threshold. I still don't know
1037 if it is the best guess */
1038 sync_threshold = AV_SYNC_THRESHOLD;
1039 if (delay > sync_threshold)
1040 sync_threshold = delay;
1041 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1042 if (diff <= -sync_threshold)
1044 else if (diff >= sync_threshold)
1049 is->frame_timer += delay;
1050 /* compute the REAL delay (we need to do that to avoid
1052 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
1053 if (actual_delay < 0.010) {
1054 /* XXX: should skip picture */
1055 actual_delay = 0.010;
1057 /* launch timer for next picture */
1058 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
1060 #if defined(DEBUG_SYNC)
1061 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1062 delay, actual_delay, vp->pts, -diff);
1065 if(is->subtitle_st) {
1066 if (is->subtitle_stream_changed) {
1067 SDL_LockMutex(is->subpq_mutex);
1069 while (is->subpq_size) {
1070 free_subpicture(&is->subpq[is->subpq_rindex]);
1072 /* update queue size and signal for next picture */
1073 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1074 is->subpq_rindex = 0;
1078 is->subtitle_stream_changed = 0;
1080 SDL_CondSignal(is->subpq_cond);
1081 SDL_UnlockMutex(is->subpq_mutex);
1083 if (is->subpq_size > 0) {
1084 sp = &is->subpq[is->subpq_rindex];
1086 if (is->subpq_size > 1)
1087 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1091 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1092 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1094 free_subpicture(sp);
1096 /* update queue size and signal for next picture */
1097 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1098 is->subpq_rindex = 0;
1100 SDL_LockMutex(is->subpq_mutex);
1102 SDL_CondSignal(is->subpq_cond);
1103 SDL_UnlockMutex(is->subpq_mutex);
1109 /* display picture */
1112 /* update queue size and signal for next picture */
1113 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1114 is->pictq_rindex = 0;
1116 SDL_LockMutex(is->pictq_mutex);
1118 SDL_CondSignal(is->pictq_cond);
1119 SDL_UnlockMutex(is->pictq_mutex);
1121 } else if (is->audio_st) {
1122 /* draw the next audio frame */
1124 schedule_refresh(is, 40);
1126 /* if only audio stream, then display the audio bars (better
1127 than nothing, just to test the implementation */
1129 /* display picture */
1132 schedule_refresh(is, 100);
1135 static int64_t last_time;
1137 int aqsize, vqsize, sqsize;
1140 cur_time = av_gettime();
1141 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
1146 aqsize = is->audioq.size;
1148 vqsize = is->videoq.size;
1149 if (is->subtitle_st)
1150 sqsize = is->subtitleq.size;
1152 if (is->audio_st && is->video_st)
1153 av_diff = get_audio_clock(is) - get_video_clock(is);
1154 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB \r",
1155 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize);
1157 last_time = cur_time;
1162 /* allocate a picture (needs to do that in main thread to avoid
1163 potential locking problems */
1164 static void alloc_picture(void *opaque)
1166 VideoState *is = opaque;
1169 vp = &is->pictq[is->pictq_windex];
1172 SDL_FreeYUVOverlay(vp->bmp);
1175 /* XXX: use generic function */
1176 /* XXX: disable overlay if no hardware acceleration or if RGB format */
1177 switch(is->video_st->codec->pix_fmt) {
1178 case PIX_FMT_YUV420P:
1179 case PIX_FMT_YUV422P:
1180 case PIX_FMT_YUV444P:
1181 case PIX_FMT_YUYV422:
1182 case PIX_FMT_YUV410P:
1183 case PIX_FMT_YUV411P:
1191 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
1192 is->video_st->codec->height,
1195 vp->width = is->video_st->codec->width;
1196 vp->height = is->video_st->codec->height;
1198 SDL_LockMutex(is->pictq_mutex);
1200 SDL_CondSignal(is->pictq_cond);
1201 SDL_UnlockMutex(is->pictq_mutex);
1206 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1208 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
1213 static struct SwsContext *img_convert_ctx;
1215 /* wait until we have space to put a new picture */
1216 SDL_LockMutex(is->pictq_mutex);
1217 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1218 !is->videoq.abort_request) {
1219 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1221 SDL_UnlockMutex(is->pictq_mutex);
1223 if (is->videoq.abort_request)
1226 vp = &is->pictq[is->pictq_windex];
1228 /* alloc or resize hardware picture buffer */
1230 vp->width != is->video_st->codec->width ||
1231 vp->height != is->video_st->codec->height) {
1236 /* the allocation must be done in the main thread to avoid
1238 event.type = FF_ALLOC_EVENT;
1239 event.user.data1 = is;
1240 SDL_PushEvent(&event);
1242 /* wait until the picture is allocated */
1243 SDL_LockMutex(is->pictq_mutex);
1244 while (!vp->allocated && !is->videoq.abort_request) {
1245 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1247 SDL_UnlockMutex(is->pictq_mutex);
1249 if (is->videoq.abort_request)
1253 /* if the frame is not skipped, then display it */
1255 /* get a pointer on the bitmap */
1256 SDL_LockYUVOverlay (vp->bmp);
1258 dst_pix_fmt = PIX_FMT_YUV420P;
1259 pict.data[0] = vp->bmp->pixels[0];
1260 pict.data[1] = vp->bmp->pixels[2];
1261 pict.data[2] = vp->bmp->pixels[1];
1263 pict.linesize[0] = vp->bmp->pitches[0];
1264 pict.linesize[1] = vp->bmp->pitches[2];
1265 pict.linesize[2] = vp->bmp->pitches[1];
1266 img_convert_ctx = sws_getCachedContext(img_convert_ctx,
1267 is->video_st->codec->width, is->video_st->codec->height,
1268 is->video_st->codec->pix_fmt,
1269 is->video_st->codec->width, is->video_st->codec->height,
1270 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1271 if (img_convert_ctx == NULL) {
1272 fprintf(stderr, "Cannot initialize the conversion context\n");
1275 sws_scale(img_convert_ctx, src_frame->data, src_frame->linesize,
1276 0, is->video_st->codec->height, pict.data, pict.linesize);
1277 /* update the bitmap content */
1278 SDL_UnlockYUVOverlay(vp->bmp);
1282 /* now we can update the picture count */
1283 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1284 is->pictq_windex = 0;
1285 SDL_LockMutex(is->pictq_mutex);
1287 SDL_UnlockMutex(is->pictq_mutex);
1293 * compute the exact PTS for the picture if it is omitted in the stream
1294 * @param pts1 the dts of the pkt / pts of the frame
1296 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
1298 double frame_delay, pts;
1303 /* update video clock with pts, if present */
1304 is->video_clock = pts;
1306 pts = is->video_clock;
1308 /* update video clock for next frame */
1309 frame_delay = av_q2d(is->video_st->codec->time_base);
1310 /* for MPEG2, the frame can be repeated, so we update the
1311 clock accordingly */
1312 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1313 is->video_clock += frame_delay;
1315 #if defined(DEBUG_SYNC) && 0
1318 if (src_frame->pict_type == FF_B_TYPE)
1320 else if (src_frame->pict_type == FF_I_TYPE)
1324 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1328 return queue_picture(is, src_frame, pts);
1331 static uint64_t global_video_pkt_pts= AV_NOPTS_VALUE;
1333 static int my_get_buffer(struct AVCodecContext *c, AVFrame *pic){
1334 int ret= avcodec_default_get_buffer(c, pic);
1335 uint64_t *pts= av_malloc(sizeof(uint64_t));
1336 *pts= global_video_pkt_pts;
1341 static void my_release_buffer(struct AVCodecContext *c, AVFrame *pic){
1342 if(pic) av_freep(&pic->opaque);
1343 avcodec_default_release_buffer(c, pic);
1346 static int video_thread(void *arg)
1348 VideoState *is = arg;
1349 AVPacket pkt1, *pkt = &pkt1;
1350 int len1, got_picture;
1351 AVFrame *frame= avcodec_alloc_frame();
1355 while (is->paused && !is->videoq.abort_request) {
1358 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1361 if(pkt->data == flush_pkt.data){
1362 avcodec_flush_buffers(is->video_st->codec);
1366 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1367 this packet, if any */
1368 global_video_pkt_pts= pkt->pts;
1369 len1 = avcodec_decode_video(is->video_st->codec,
1370 frame, &got_picture,
1371 pkt->data, pkt->size);
1373 if( (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
1374 && frame->opaque && *(uint64_t*)frame->opaque != AV_NOPTS_VALUE)
1375 pts= *(uint64_t*)frame->opaque;
1376 else if(pkt->dts != AV_NOPTS_VALUE)
1380 pts *= av_q2d(is->video_st->time_base);
1385 if (output_picture2(is, frame, pts) < 0)
1388 av_free_packet(pkt);
1391 stream_pause(cur_stream);
1398 static int subtitle_thread(void *arg)
1400 VideoState *is = arg;
1402 AVPacket pkt1, *pkt = &pkt1;
1403 int len1, got_subtitle;
1406 int r, g, b, y, u, v, a;
1409 while (is->paused && !is->subtitleq.abort_request) {
1412 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1415 if(pkt->data == flush_pkt.data){
1416 avcodec_flush_buffers(is->subtitle_st->codec);
1419 SDL_LockMutex(is->subpq_mutex);
1420 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1421 !is->subtitleq.abort_request) {
1422 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1424 SDL_UnlockMutex(is->subpq_mutex);
1426 if (is->subtitleq.abort_request)
1429 sp = &is->subpq[is->subpq_windex];
1431 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1432 this packet, if any */
1434 if (pkt->pts != AV_NOPTS_VALUE)
1435 pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1437 len1 = avcodec_decode_subtitle(is->subtitle_st->codec,
1438 &sp->sub, &got_subtitle,
1439 pkt->data, pkt->size);
1442 if (got_subtitle && sp->sub.format == 0) {
1445 for (i = 0; i < sp->sub.num_rects; i++)
1447 for (j = 0; j < sp->sub.rects[i].nb_colors; j++)
1449 RGBA_IN(r, g, b, a, sp->sub.rects[i].rgba_palette + j);
1450 y = RGB_TO_Y_CCIR(r, g, b);
1451 u = RGB_TO_U_CCIR(r, g, b, 0);
1452 v = RGB_TO_V_CCIR(r, g, b, 0);
1453 YUVA_OUT(sp->sub.rects[i].rgba_palette + j, y, u, v, a);
1457 /* now we can update the picture count */
1458 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1459 is->subpq_windex = 0;
1460 SDL_LockMutex(is->subpq_mutex);
1462 SDL_UnlockMutex(is->subpq_mutex);
1464 av_free_packet(pkt);
1467 // stream_pause(cur_stream);
1473 /* copy samples for viewing in editor window */
1474 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1476 int size, len, channels;
1478 channels = is->audio_st->codec->channels;
1480 size = samples_size / sizeof(short);
1482 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1485 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1487 is->sample_array_index += len;
1488 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1489 is->sample_array_index = 0;
1494 /* return the new audio buffer size (samples can be added or deleted
1495 to get better sync if video or external master clock) */
1496 static int synchronize_audio(VideoState *is, short *samples,
1497 int samples_size1, double pts)
1499 int n, samples_size;
1502 n = 2 * is->audio_st->codec->channels;
1503 samples_size = samples_size1;
1505 /* if not master, then we try to remove or add samples to correct the clock */
1506 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1507 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1508 double diff, avg_diff;
1509 int wanted_size, min_size, max_size, nb_samples;
1511 ref_clock = get_master_clock(is);
1512 diff = get_audio_clock(is) - ref_clock;
1514 if (diff < AV_NOSYNC_THRESHOLD) {
1515 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1516 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1517 /* not enough measures to have a correct estimate */
1518 is->audio_diff_avg_count++;
1520 /* estimate the A-V difference */
1521 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1523 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1524 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1525 nb_samples = samples_size / n;
1527 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1528 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1529 if (wanted_size < min_size)
1530 wanted_size = min_size;
1531 else if (wanted_size > max_size)
1532 wanted_size = max_size;
1534 /* add or remove samples to correction the synchro */
1535 if (wanted_size < samples_size) {
1536 /* remove samples */
1537 samples_size = wanted_size;
1538 } else if (wanted_size > samples_size) {
1539 uint8_t *samples_end, *q;
1543 nb = (samples_size - wanted_size);
1544 samples_end = (uint8_t *)samples + samples_size - n;
1545 q = samples_end + n;
1547 memcpy(q, samples_end, n);
1551 samples_size = wanted_size;
1555 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1556 diff, avg_diff, samples_size - samples_size1,
1557 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1561 /* too big difference : may be initial PTS errors, so
1563 is->audio_diff_avg_count = 0;
1564 is->audio_diff_cum = 0;
1568 return samples_size;
1571 /* decode one audio frame and returns its uncompressed size */
1572 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, int buf_size, double *pts_ptr)
1574 AVPacket *pkt = &is->audio_pkt;
1575 int n, len1, data_size;
1579 /* NOTE: the audio packet can contain several frames */
1580 while (is->audio_pkt_size > 0) {
1581 data_size = buf_size;
1582 len1 = avcodec_decode_audio2(is->audio_st->codec,
1583 (int16_t *)audio_buf, &data_size,
1584 is->audio_pkt_data, is->audio_pkt_size);
1586 /* if error, we skip the frame */
1587 is->audio_pkt_size = 0;
1591 is->audio_pkt_data += len1;
1592 is->audio_pkt_size -= len1;
1595 /* if no pts, then compute it */
1596 pts = is->audio_clock;
1598 n = 2 * is->audio_st->codec->channels;
1599 is->audio_clock += (double)data_size /
1600 (double)(n * is->audio_st->codec->sample_rate);
1601 #if defined(DEBUG_SYNC)
1603 static double last_clock;
1604 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1605 is->audio_clock - last_clock,
1606 is->audio_clock, pts);
1607 last_clock = is->audio_clock;
1613 /* free the current packet */
1615 av_free_packet(pkt);
1617 if (is->paused || is->audioq.abort_request) {
1621 /* read next packet */
1622 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1624 if(pkt->data == flush_pkt.data){
1625 avcodec_flush_buffers(is->audio_st->codec);
1629 is->audio_pkt_data = pkt->data;
1630 is->audio_pkt_size = pkt->size;
1632 /* if update the audio clock with the pts */
1633 if (pkt->pts != AV_NOPTS_VALUE) {
1634 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1639 /* get the current audio output buffer size, in samples. With SDL, we
1640 cannot have a precise information */
1641 static int audio_write_get_buf_size(VideoState *is)
1643 return is->audio_buf_size - is->audio_buf_index;
1647 /* prepare a new audio buffer */
1648 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1650 VideoState *is = opaque;
1651 int audio_size, len1;
1654 audio_callback_time = av_gettime();
1657 if (is->audio_buf_index >= is->audio_buf_size) {
1658 audio_size = audio_decode_frame(is, is->audio_buf, sizeof(is->audio_buf), &pts);
1659 if (audio_size < 0) {
1660 /* if error, just output silence */
1661 is->audio_buf_size = 1024;
1662 memset(is->audio_buf, 0, is->audio_buf_size);
1665 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1666 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1668 is->audio_buf_size = audio_size;
1670 is->audio_buf_index = 0;
1672 len1 = is->audio_buf_size - is->audio_buf_index;
1675 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1678 is->audio_buf_index += len1;
1682 /* open a given stream. Return 0 if OK */
1683 static int stream_component_open(VideoState *is, int stream_index)
1685 AVFormatContext *ic = is->ic;
1686 AVCodecContext *enc;
1688 SDL_AudioSpec wanted_spec, spec;
1690 if (stream_index < 0 || stream_index >= ic->nb_streams)
1692 enc = ic->streams[stream_index]->codec;
1694 /* prepare audio output */
1695 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1696 if (enc->channels > 0) {
1697 enc->request_channels = FFMIN(2, enc->channels);
1699 enc->request_channels = 2;
1703 codec = avcodec_find_decoder(enc->codec_id);
1704 enc->debug_mv = debug_mv;
1706 enc->workaround_bugs = workaround_bugs;
1707 enc->lowres = lowres;
1708 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1709 enc->idct_algo= idct;
1710 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1711 enc->skip_frame= skip_frame;
1712 enc->skip_idct= skip_idct;
1713 enc->skip_loop_filter= skip_loop_filter;
1714 enc->error_resilience= error_resilience;
1715 enc->error_concealment= error_concealment;
1717 avcodec_open(enc, codec) < 0)
1720 /* prepare audio output */
1721 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1722 wanted_spec.freq = enc->sample_rate;
1723 wanted_spec.format = AUDIO_S16SYS;
1724 wanted_spec.channels = enc->channels;
1725 wanted_spec.silence = 0;
1726 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1727 wanted_spec.callback = sdl_audio_callback;
1728 wanted_spec.userdata = is;
1729 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1730 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1733 is->audio_hw_buf_size = spec.size;
1737 avcodec_thread_init(enc, thread_count);
1738 enc->thread_count= thread_count;
1739 switch(enc->codec_type) {
1740 case CODEC_TYPE_AUDIO:
1741 is->audio_stream = stream_index;
1742 is->audio_st = ic->streams[stream_index];
1743 is->audio_buf_size = 0;
1744 is->audio_buf_index = 0;
1746 /* init averaging filter */
1747 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1748 is->audio_diff_avg_count = 0;
1749 /* since we do not have a precise anough audio fifo fullness,
1750 we correct audio sync only if larger than this threshold */
1751 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1753 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1754 packet_queue_init(&is->audioq);
1757 case CODEC_TYPE_VIDEO:
1758 is->video_stream = stream_index;
1759 is->video_st = ic->streams[stream_index];
1761 is->frame_last_delay = 40e-3;
1762 is->frame_timer = (double)av_gettime() / 1000000.0;
1763 is->video_current_pts_time = av_gettime();
1765 packet_queue_init(&is->videoq);
1766 is->video_tid = SDL_CreateThread(video_thread, is);
1768 enc-> get_buffer= my_get_buffer;
1769 enc->release_buffer= my_release_buffer;
1771 case CODEC_TYPE_SUBTITLE:
1772 is->subtitle_stream = stream_index;
1773 is->subtitle_st = ic->streams[stream_index];
1774 packet_queue_init(&is->subtitleq);
1776 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
1784 static void stream_component_close(VideoState *is, int stream_index)
1786 AVFormatContext *ic = is->ic;
1787 AVCodecContext *enc;
1789 if (stream_index < 0 || stream_index >= ic->nb_streams)
1791 enc = ic->streams[stream_index]->codec;
1793 switch(enc->codec_type) {
1794 case CODEC_TYPE_AUDIO:
1795 packet_queue_abort(&is->audioq);
1799 packet_queue_end(&is->audioq);
1801 case CODEC_TYPE_VIDEO:
1802 packet_queue_abort(&is->videoq);
1804 /* note: we also signal this mutex to make sure we deblock the
1805 video thread in all cases */
1806 SDL_LockMutex(is->pictq_mutex);
1807 SDL_CondSignal(is->pictq_cond);
1808 SDL_UnlockMutex(is->pictq_mutex);
1810 SDL_WaitThread(is->video_tid, NULL);
1812 packet_queue_end(&is->videoq);
1814 case CODEC_TYPE_SUBTITLE:
1815 packet_queue_abort(&is->subtitleq);
1817 /* note: we also signal this mutex to make sure we deblock the
1818 video thread in all cases */
1819 SDL_LockMutex(is->subpq_mutex);
1820 is->subtitle_stream_changed = 1;
1822 SDL_CondSignal(is->subpq_cond);
1823 SDL_UnlockMutex(is->subpq_mutex);
1825 SDL_WaitThread(is->subtitle_tid, NULL);
1827 packet_queue_end(&is->subtitleq);
1834 switch(enc->codec_type) {
1835 case CODEC_TYPE_AUDIO:
1836 is->audio_st = NULL;
1837 is->audio_stream = -1;
1839 case CODEC_TYPE_VIDEO:
1840 is->video_st = NULL;
1841 is->video_stream = -1;
1843 case CODEC_TYPE_SUBTITLE:
1844 is->subtitle_st = NULL;
1845 is->subtitle_stream = -1;
1852 static void dump_stream_info(const AVFormatContext *s)
1855 fprintf(stderr, "Track: %d\n", s->track);
1856 if (s->title[0] != '\0')
1857 fprintf(stderr, "Title: %s\n", s->title);
1858 if (s->author[0] != '\0')
1859 fprintf(stderr, "Author: %s\n", s->author);
1860 if (s->copyright[0] != '\0')
1861 fprintf(stderr, "Copyright: %s\n", s->copyright);
1862 if (s->comment[0] != '\0')
1863 fprintf(stderr, "Comment: %s\n", s->comment);
1864 if (s->album[0] != '\0')
1865 fprintf(stderr, "Album: %s\n", s->album);
1867 fprintf(stderr, "Year: %d\n", s->year);
1868 if (s->genre[0] != '\0')
1869 fprintf(stderr, "Genre: %s\n", s->genre);
1872 /* since we have only one decoding thread, we can use a global
1873 variable instead of a thread local variable */
1874 static VideoState *global_video_state;
1876 static int decode_interrupt_cb(void)
1878 return (global_video_state && global_video_state->abort_request);
1881 /* this thread gets the stream from the disk or the network */
1882 static int decode_thread(void *arg)
1884 VideoState *is = arg;
1885 AVFormatContext *ic;
1886 int err, i, ret, video_index, audio_index;
1887 AVPacket pkt1, *pkt = &pkt1;
1888 AVFormatParameters params, *ap = ¶ms;
1892 is->video_stream = -1;
1893 is->audio_stream = -1;
1894 is->subtitle_stream = -1;
1896 global_video_state = is;
1897 url_set_interrupt_cb(decode_interrupt_cb);
1899 memset(ap, 0, sizeof(*ap));
1901 ap->width = frame_width;
1902 ap->height= frame_height;
1903 ap->time_base= (AVRational){1, 25};
1904 ap->pix_fmt = frame_pix_fmt;
1906 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1908 print_error(is->filename, err);
1915 ic->flags |= AVFMT_FLAG_GENPTS;
1917 err = av_find_stream_info(ic);
1919 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1924 ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
1926 /* if seeking requested, we execute it */
1927 if (start_time != AV_NOPTS_VALUE) {
1930 timestamp = start_time;
1931 /* add the stream start time */
1932 if (ic->start_time != AV_NOPTS_VALUE)
1933 timestamp += ic->start_time;
1934 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1936 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1937 is->filename, (double)timestamp / AV_TIME_BASE);
1941 for(i = 0; i < ic->nb_streams; i++) {
1942 AVCodecContext *enc = ic->streams[i]->codec;
1943 switch(enc->codec_type) {
1944 case CODEC_TYPE_AUDIO:
1945 if ((audio_index < 0 || wanted_audio_stream-- > 0) && !audio_disable)
1948 case CODEC_TYPE_VIDEO:
1949 if ((video_index < 0 || wanted_video_stream-- > 0) && !video_disable)
1957 dump_format(ic, 0, is->filename, 0);
1958 dump_stream_info(ic);
1961 /* open the streams */
1962 if (audio_index >= 0) {
1963 stream_component_open(is, audio_index);
1966 if (video_index >= 0) {
1967 stream_component_open(is, video_index);
1969 if (!display_disable)
1973 if (is->video_stream < 0 && is->audio_stream < 0) {
1974 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1980 if (is->abort_request)
1982 if (is->paused != is->last_paused) {
1983 is->last_paused = is->paused;
1989 #if defined(CONFIG_RTSP_DEMUXER) || defined(CONFIG_MMSH_PROTOCOL)
1991 (!strcmp(ic->iformat->name, "rtsp") ||
1992 (ic->pb && !strcmp(url_fileno(ic->pb)->prot->name, "mmsh")))) {
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 ||
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 the stream is paused unpause it, then step */
2215 if (cur_stream->paused)
2216 stream_pause(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 static void opt_sync(const char *arg)
2401 if (!strcmp(arg, "audio"))
2402 av_sync_type = AV_SYNC_AUDIO_MASTER;
2403 else if (!strcmp(arg, "video"))
2404 av_sync_type = AV_SYNC_VIDEO_MASTER;
2405 else if (!strcmp(arg, "ext"))
2406 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2413 static void opt_seek(const char *arg)
2415 start_time = parse_date(arg, 1);
2416 if (start_time == INT64_MIN) {
2417 fprintf(stderr, "Invalid duration specification: %s\n", arg);
2422 static void opt_debug(const char *arg)
2424 av_log_set_level(99);
2428 static void opt_vismv(const char *arg)
2430 debug_mv = atoi(arg);
2433 static void opt_thread_count(const char *arg)
2435 thread_count= atoi(arg);
2436 #if !defined(HAVE_THREADS)
2437 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2441 static void opt_show_help(void)
2447 const OptionDef options[] = {
2448 { "h", 0, {(void*)opt_show_help}, "show help" },
2449 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
2450 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
2451 { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2452 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2453 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2454 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2455 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_audio_stream}, "", "" },
2456 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_video_stream}, "", "" },
2457 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2458 { "bytes", OPT_BOOL, {(void*)&seek_by_bytes}, "seek by bytes" },
2459 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2460 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2461 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2462 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2463 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
2464 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2465 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
2466 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2467 { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2468 { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
2469 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2470 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2471 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2472 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2473 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
2474 { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_resilience}, "set error detection threshold (0-4)", "threshold" },
2475 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
2476 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2477 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2481 void show_help(void)
2483 printf("usage: ffplay [options] input_file\n"
2484 "Simple media player\n");
2486 show_help_options(options, "Main options:\n",
2488 show_help_options(options, "\nAdvanced options:\n",
2489 OPT_EXPERT, OPT_EXPERT);
2490 printf("\nWhile playing:\n"
2492 "f toggle full screen\n"
2494 "a cycle audio channel\n"
2495 "v cycle video channel\n"
2496 "t cycle subtitle channel\n"
2497 "w show audio waves\n"
2498 "left/right seek backward/forward 10 seconds\n"
2499 "down/up seek backward/forward 1 minute\n"
2500 "mouse click seek to percentage in file corresponding to fraction of width\n"
2504 void opt_input_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 */
2517 avcodec_register_all();
2518 avdevice_register_all();
2521 show_banner(program_name, program_birth_year);
2523 parse_options(argc, argv, options, opt_input_file);
2525 if (!input_filename) {
2530 if (display_disable) {
2533 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2534 #if !defined(__MINGW32__) && !defined(__APPLE__)
2535 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
2537 if (SDL_Init (flags)) {
2538 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2542 if (!display_disable) {
2543 #ifdef HAVE_SDL_VIDEO_SIZE
2544 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2545 fs_screen_width = vi->current_w;
2546 fs_screen_height = vi->current_h;
2550 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2551 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
2552 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2553 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2555 av_init_packet(&flush_pkt);
2556 flush_pkt.data= "FLUSH";
2558 cur_stream = stream_open(input_filename, file_iformat);