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
21 #define HAVE_AV_CONFIG_H
29 #include <SDL_thread.h>
32 #undef main /* We don't want SDL to override our main() */
45 DosGetInfoBlocks(&tib, &pib);
47 // Change flag from VIO to PM:
48 if (pib->pib_ultype==2) pib->pib_ultype = 3;
56 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
57 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
58 #define MAX_SUBTITLEQ_SIZE (5 * 16 * 1024)
60 /* SDL audio buffer size, in samples. Should be small to have precise
61 A/V sync as SDL does not have hardware buffer fullness info. */
62 #define SDL_AUDIO_BUFFER_SIZE 1024
64 /* no AV sync correction is done if below the AV sync threshold */
65 #define AV_SYNC_THRESHOLD 0.01
66 /* no AV correction is done if too big error */
67 #define AV_NOSYNC_THRESHOLD 10.0
69 /* maximum audio speed change to get correct sync */
70 #define SAMPLE_CORRECTION_PERCENT_MAX 10
72 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
73 #define AUDIO_DIFF_AVG_NB 20
75 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
76 #define SAMPLE_ARRAY_SIZE (2*65536)
78 static int sws_flags = SWS_BICUBIC;
80 typedef struct PacketQueue {
81 AVPacketList *first_pkt, *last_pkt;
89 #define VIDEO_PICTURE_QUEUE_SIZE 1
90 #define SUBPICTURE_QUEUE_SIZE 4
92 typedef struct VideoPicture {
93 double pts; ///<presentation time stamp for this picture
95 int width, height; /* source height & width */
99 typedef struct SubPicture {
100 double pts; /* presentation time stamp for this picture */
105 AV_SYNC_AUDIO_MASTER, /* default choice */
106 AV_SYNC_VIDEO_MASTER,
107 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
110 typedef struct VideoState {
111 SDL_Thread *parse_tid;
112 SDL_Thread *video_tid;
113 AVInputFormat *iformat;
122 int dtg_active_format;
127 double external_clock; /* external clock base */
128 int64_t external_clock_time;
131 double audio_diff_cum; /* used for AV difference average computation */
132 double audio_diff_avg_coef;
133 double audio_diff_threshold;
134 int audio_diff_avg_count;
137 int audio_hw_buf_size;
138 /* samples output by the codec. we reserve more space for avsync
140 DECLARE_ALIGNED(16,uint8_t,audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
141 unsigned int audio_buf_size; /* in bytes */
142 int audio_buf_index; /* in bytes */
144 uint8_t *audio_pkt_data;
147 int show_audio; /* if true, display audio samples */
148 int16_t sample_array[SAMPLE_ARRAY_SIZE];
149 int sample_array_index;
152 SDL_Thread *subtitle_tid;
154 int subtitle_stream_changed;
155 AVStream *subtitle_st;
156 PacketQueue subtitleq;
157 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
158 int subpq_size, subpq_rindex, subpq_windex;
159 SDL_mutex *subpq_mutex;
160 SDL_cond *subpq_cond;
163 double frame_last_pts;
164 double frame_last_delay;
165 double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
169 double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used)
170 int64_t video_current_pts_time; ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
171 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
172 int pictq_size, pictq_rindex, pictq_windex;
173 SDL_mutex *pictq_mutex;
174 SDL_cond *pictq_cond;
176 // QETimer *video_timer;
178 int width, height, xleft, ytop;
181 void show_help(void);
182 static int audio_write_get_buf_size(VideoState *is);
184 /* options specified by the user */
185 static AVInputFormat *file_iformat;
186 static const char *input_filename;
187 static int fs_screen_width;
188 static int fs_screen_height;
189 static int screen_width = 0;
190 static int screen_height = 0;
191 static int frame_width = 0;
192 static int frame_height = 0;
193 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
194 static int audio_disable;
195 static int video_disable;
196 static int wanted_audio_stream= 0;
197 static int seek_by_bytes;
198 static int display_disable;
199 static int show_status;
200 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
201 static int64_t start_time = AV_NOPTS_VALUE;
202 static int debug = 0;
203 static int debug_mv = 0;
205 static int thread_count = 1;
206 static int workaround_bugs = 1;
208 static int genpts = 0;
209 static int lowres = 0;
210 static int idct = FF_IDCT_AUTO;
211 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
212 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
213 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
214 static int error_resilience = FF_ER_CAREFUL;
215 static int error_concealment = 3;
216 static int decoder_reorder_pts= 0;
218 /* current context */
219 static int is_full_screen;
220 static VideoState *cur_stream;
221 static int64_t audio_callback_time;
225 #define FF_ALLOC_EVENT (SDL_USEREVENT)
226 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
227 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
231 /* packet queue handling */
232 static void packet_queue_init(PacketQueue *q)
234 memset(q, 0, sizeof(PacketQueue));
235 q->mutex = SDL_CreateMutex();
236 q->cond = SDL_CreateCond();
239 static void packet_queue_flush(PacketQueue *q)
241 AVPacketList *pkt, *pkt1;
243 SDL_LockMutex(q->mutex);
244 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
246 av_free_packet(&pkt->pkt);
253 SDL_UnlockMutex(q->mutex);
256 static void packet_queue_end(PacketQueue *q)
258 packet_queue_flush(q);
259 SDL_DestroyMutex(q->mutex);
260 SDL_DestroyCond(q->cond);
263 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
267 /* duplicate the packet */
268 if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
271 pkt1 = av_malloc(sizeof(AVPacketList));
278 SDL_LockMutex(q->mutex);
284 q->last_pkt->next = pkt1;
287 q->size += pkt1->pkt.size;
288 /* XXX: should duplicate packet data in DV case */
289 SDL_CondSignal(q->cond);
291 SDL_UnlockMutex(q->mutex);
295 static void packet_queue_abort(PacketQueue *q)
297 SDL_LockMutex(q->mutex);
299 q->abort_request = 1;
301 SDL_CondSignal(q->cond);
303 SDL_UnlockMutex(q->mutex);
306 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
307 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
312 SDL_LockMutex(q->mutex);
315 if (q->abort_request) {
322 q->first_pkt = pkt1->next;
326 q->size -= pkt1->pkt.size;
335 SDL_CondWait(q->cond, q->mutex);
338 SDL_UnlockMutex(q->mutex);
342 static inline void fill_rectangle(SDL_Surface *screen,
343 int x, int y, int w, int h, int color)
350 SDL_FillRect(screen, &rect, color);
354 /* draw only the border of a rectangle */
355 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
359 /* fill the background */
363 w2 = s->width - (x + w);
369 h2 = s->height - (y + h);
372 fill_rectangle(screen,
376 fill_rectangle(screen,
377 s->xleft + s->width - w2, s->ytop,
380 fill_rectangle(screen,
381 s->xleft + w1, s->ytop,
382 s->width - w1 - w2, h1,
384 fill_rectangle(screen,
385 s->xleft + w1, s->ytop + s->height - h2,
386 s->width - w1 - w2, h2,
394 #define ONE_HALF (1 << (SCALEBITS - 1))
395 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
397 #define RGB_TO_Y_CCIR(r, g, b) \
398 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
399 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
401 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
402 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
403 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
405 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
406 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
407 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
409 #define ALPHA_BLEND(a, oldp, newp, s)\
410 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
412 #define RGBA_IN(r, g, b, a, s)\
414 unsigned int v = ((const uint32_t *)(s))[0];\
415 a = (v >> 24) & 0xff;\
416 r = (v >> 16) & 0xff;\
417 g = (v >> 8) & 0xff;\
421 #define YUVA_IN(y, u, v, a, s, pal)\
423 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)s];\
424 a = (val >> 24) & 0xff;\
425 y = (val >> 16) & 0xff;\
426 u = (val >> 8) & 0xff;\
430 #define YUVA_OUT(d, y, u, v, a)\
432 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
438 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect)
440 int wrap, wrap3, width2, skip2;
441 int y, u, v, a, u1, v1, a1, w, h;
442 uint8_t *lum, *cb, *cr;
446 lum = dst->data[0] + rect->y * dst->linesize[0];
447 cb = dst->data[1] + (rect->y >> 1) * dst->linesize[1];
448 cr = dst->data[2] + (rect->y >> 1) * dst->linesize[2];
450 width2 = (rect->w + 1) >> 1;
451 skip2 = rect->x >> 1;
452 wrap = dst->linesize[0];
453 wrap3 = rect->linesize;
455 pal = rect->rgba_palette; /* Now in YCrCb! */
463 YUVA_IN(y, u, v, a, p, pal);
464 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
465 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
466 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
472 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
473 YUVA_IN(y, u, v, a, p, pal);
477 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
479 YUVA_IN(y, u, v, a, p + BPP, pal);
483 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
484 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
485 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
492 YUVA_IN(y, u, v, a, p, pal);
493 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
494 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
495 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
497 p += wrap3 + (wrap3 - rect->w * BPP);
498 lum += wrap + (wrap - rect->w - rect->x);
499 cb += dst->linesize[1] - width2 - skip2;
500 cr += dst->linesize[2] - width2 - skip2;
502 for(h = rect->h - (rect->y & 1); h >= 2; h -= 2) {
508 YUVA_IN(y, u, v, a, p, pal);
512 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
515 YUVA_IN(y, u, v, a, p, pal);
519 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
520 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
521 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
527 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
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);
542 YUVA_IN(y, u, v, a, p, pal);
546 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
548 YUVA_IN(y, u, v, a, p, pal);
552 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
554 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
555 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
559 p += -wrap3 + 2 * BPP;
563 YUVA_IN(y, u, v, a, p, pal);
567 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
570 YUVA_IN(y, u, v, a, p, pal);
574 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
575 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
576 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
582 p += wrap3 + (wrap3 - rect->w * BPP);
583 lum += wrap + (wrap - rect->w - rect->x);
584 cb += dst->linesize[1] - width2 - skip2;
585 cr += dst->linesize[2] - width2 - skip2;
587 /* handle odd height */
594 YUVA_IN(y, u, v, a, p, pal);
595 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
596 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
597 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
603 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
604 YUVA_IN(y, u, v, a, p, pal);
608 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
610 YUVA_IN(y, u, v, a, p + BPP, pal);
614 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
615 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
616 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
623 YUVA_IN(y, u, v, a, p, pal);
624 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
625 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
626 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
631 static void free_subpicture(SubPicture *sp)
635 for (i = 0; i < sp->sub.num_rects; i++)
637 av_free(sp->sub.rects[i].bitmap);
638 av_free(sp->sub.rects[i].rgba_palette);
641 av_free(sp->sub.rects);
643 memset(&sp->sub, 0, sizeof(AVSubtitle));
646 static void video_image_display(VideoState *is)
652 int width, height, x, y;
656 vp = &is->pictq[is->pictq_rindex];
658 /* XXX: use variable in the frame */
659 if (is->video_st->codec->sample_aspect_ratio.num == 0)
662 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio)
663 * is->video_st->codec->width / is->video_st->codec->height;;
664 if (aspect_ratio <= 0.0)
665 aspect_ratio = (float)is->video_st->codec->width /
666 (float)is->video_st->codec->height;
667 /* if an active format is indicated, then it overrides the
670 if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
671 is->dtg_active_format = is->video_st->codec->dtg_active_format;
672 printf("dtg_active_format=%d\n", is->dtg_active_format);
676 switch(is->video_st->codec->dtg_active_format) {
677 case FF_DTG_AFD_SAME:
682 aspect_ratio = 4.0 / 3.0;
684 case FF_DTG_AFD_16_9:
685 aspect_ratio = 16.0 / 9.0;
687 case FF_DTG_AFD_14_9:
688 aspect_ratio = 14.0 / 9.0;
690 case FF_DTG_AFD_4_3_SP_14_9:
691 aspect_ratio = 14.0 / 9.0;
693 case FF_DTG_AFD_16_9_SP_14_9:
694 aspect_ratio = 14.0 / 9.0;
696 case FF_DTG_AFD_SP_4_3:
697 aspect_ratio = 4.0 / 3.0;
704 if (is->subpq_size > 0)
706 sp = &is->subpq[is->subpq_rindex];
708 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
710 SDL_LockYUVOverlay (vp->bmp);
712 pict.data[0] = vp->bmp->pixels[0];
713 pict.data[1] = vp->bmp->pixels[2];
714 pict.data[2] = vp->bmp->pixels[1];
716 pict.linesize[0] = vp->bmp->pitches[0];
717 pict.linesize[1] = vp->bmp->pitches[2];
718 pict.linesize[2] = vp->bmp->pitches[1];
720 for (i = 0; i < sp->sub.num_rects; i++)
721 blend_subrect(&pict, &sp->sub.rects[i]);
723 SDL_UnlockYUVOverlay (vp->bmp);
729 /* XXX: we suppose the screen has a 1.0 pixel ratio */
731 width = ((int)rint(height * aspect_ratio)) & -3;
732 if (width > is->width) {
734 height = ((int)rint(width / aspect_ratio)) & -3;
736 x = (is->width - width) / 2;
737 y = (is->height - height) / 2;
738 if (!is->no_background) {
739 /* fill the background */
740 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
742 is->no_background = 0;
744 rect.x = is->xleft + x;
745 rect.y = is->ytop + y;
748 SDL_DisplayYUVOverlay(vp->bmp, &rect);
751 fill_rectangle(screen,
752 is->xleft, is->ytop, is->width, is->height,
753 QERGB(0x00, 0x00, 0x00));
758 static inline int compute_mod(int a, int b)
767 static void video_audio_display(VideoState *s)
769 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
770 int ch, channels, h, h2, bgcolor, fgcolor;
773 /* compute display index : center on currently output samples */
774 channels = s->audio_st->codec->channels;
775 nb_display_channels = channels;
778 delay = audio_write_get_buf_size(s);
781 /* to be more precise, we take into account the time spent since
782 the last buffer computation */
783 if (audio_callback_time) {
784 time_diff = av_gettime() - audio_callback_time;
785 delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
788 delay -= s->width / 2;
789 if (delay < s->width)
792 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
795 for(i=0; i<1000; i+=channels){
796 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
797 int a= s->sample_array[idx];
798 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
799 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
800 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
802 if(h<score && (b^c)<0){
808 s->last_i_start = i_start;
810 i_start = s->last_i_start;
813 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
814 fill_rectangle(screen,
815 s->xleft, s->ytop, s->width, s->height,
818 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
820 /* total height for one channel */
821 h = s->height / nb_display_channels;
822 /* graph height / 2 */
824 for(ch = 0;ch < nb_display_channels; ch++) {
826 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
827 for(x = 0; x < s->width; x++) {
828 y = (s->sample_array[i] * h2) >> 15;
835 fill_rectangle(screen,
836 s->xleft + x, ys, 1, y,
839 if (i >= SAMPLE_ARRAY_SIZE)
840 i -= SAMPLE_ARRAY_SIZE;
844 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
846 for(ch = 1;ch < nb_display_channels; ch++) {
847 y = s->ytop + ch * h;
848 fill_rectangle(screen,
849 s->xleft, y, s->width, 1,
852 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
855 static int video_open(VideoState *is){
856 int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
859 if(is_full_screen) flags |= SDL_FULLSCREEN;
860 else flags |= SDL_RESIZABLE;
862 if (is_full_screen && fs_screen_width) {
864 h = fs_screen_height;
865 } else if(!is_full_screen && screen_width){
868 }else if (is->video_st && is->video_st->codec->width){
869 w = is->video_st->codec->width;
870 h = is->video_st->codec->height;
875 #ifndef CONFIG_DARWIN
876 screen = SDL_SetVideoMode(w, h, 0, flags);
878 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
879 screen = SDL_SetVideoMode(w, h, 24, flags);
882 fprintf(stderr, "SDL: could not set video mode - exiting\n");
885 SDL_WM_SetCaption("FFplay", "FFplay");
887 is->width = screen->w;
888 is->height = screen->h;
893 /* display the current picture, if any */
894 static void video_display(VideoState *is)
897 video_open(cur_stream);
898 if (is->audio_st && is->show_audio)
899 video_audio_display(is);
900 else if (is->video_st)
901 video_image_display(is);
904 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
907 event.type = FF_REFRESH_EVENT;
908 event.user.data1 = opaque;
909 SDL_PushEvent(&event);
910 return 0; /* 0 means stop timer */
913 /* schedule a video refresh in 'delay' ms */
914 static void schedule_refresh(VideoState *is, int delay)
916 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
919 /* get the current audio clock value */
920 static double get_audio_clock(VideoState *is)
923 int hw_buf_size, bytes_per_sec;
924 pts = is->audio_clock;
925 hw_buf_size = audio_write_get_buf_size(is);
928 bytes_per_sec = is->audio_st->codec->sample_rate *
929 2 * is->audio_st->codec->channels;
932 pts -= (double)hw_buf_size / bytes_per_sec;
936 /* get the current video clock value */
937 static double get_video_clock(VideoState *is)
943 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
945 return is->video_current_pts + delta;
948 /* get the current external clock value */
949 static double get_external_clock(VideoState *is)
953 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
956 /* get the current master clock value */
957 static double get_master_clock(VideoState *is)
961 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
963 val = get_video_clock(is);
965 val = get_audio_clock(is);
966 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
968 val = get_audio_clock(is);
970 val = get_video_clock(is);
972 val = get_external_clock(is);
977 /* seek in the stream */
978 static void stream_seek(VideoState *is, int64_t pos, int rel)
982 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
984 is->seek_flags |= AVSEEK_FLAG_BYTE;
989 /* pause or resume the video */
990 static void stream_pause(VideoState *is)
992 is->paused = !is->paused;
994 is->video_current_pts = get_video_clock(is);
995 is->frame_timer += (av_gettime() - is->video_current_pts_time) / 1000000.0;
999 /* called to display each frame */
1000 static void video_refresh_timer(void *opaque)
1002 VideoState *is = opaque;
1004 double actual_delay, delay, sync_threshold, ref_clock, diff;
1006 SubPicture *sp, *sp2;
1009 if (is->pictq_size == 0) {
1010 /* if no picture, need to wait */
1011 schedule_refresh(is, 1);
1013 /* dequeue the picture */
1014 vp = &is->pictq[is->pictq_rindex];
1016 /* update current video pts */
1017 is->video_current_pts = vp->pts;
1018 is->video_current_pts_time = av_gettime();
1020 /* compute nominal delay */
1021 delay = vp->pts - is->frame_last_pts;
1022 if (delay <= 0 || delay >= 1.0) {
1023 /* if incorrect delay, use previous one */
1024 delay = is->frame_last_delay;
1026 is->frame_last_delay = delay;
1027 is->frame_last_pts = vp->pts;
1029 /* update delay to follow master synchronisation source */
1030 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1031 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1032 /* if video is slave, we try to correct big delays by
1033 duplicating or deleting a frame */
1034 ref_clock = get_master_clock(is);
1035 diff = vp->pts - ref_clock;
1037 /* skip or repeat frame. We take into account the
1038 delay to compute the threshold. I still don't know
1039 if it is the best guess */
1040 sync_threshold = AV_SYNC_THRESHOLD;
1041 if (delay > sync_threshold)
1042 sync_threshold = delay;
1043 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1044 if (diff <= -sync_threshold)
1046 else if (diff >= sync_threshold)
1051 is->frame_timer += delay;
1052 /* compute the REAL delay (we need to do that to avoid
1054 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
1055 if (actual_delay < 0.010) {
1056 /* XXX: should skip picture */
1057 actual_delay = 0.010;
1059 /* launch timer for next picture */
1060 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
1062 #if defined(DEBUG_SYNC)
1063 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1064 delay, actual_delay, vp->pts, -diff);
1067 if(is->subtitle_st) {
1068 if (is->subtitle_stream_changed) {
1069 SDL_LockMutex(is->subpq_mutex);
1071 while (is->subpq_size) {
1072 free_subpicture(&is->subpq[is->subpq_rindex]);
1074 /* update queue size and signal for next picture */
1075 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1076 is->subpq_rindex = 0;
1080 is->subtitle_stream_changed = 0;
1082 SDL_CondSignal(is->subpq_cond);
1083 SDL_UnlockMutex(is->subpq_mutex);
1085 if (is->subpq_size > 0) {
1086 sp = &is->subpq[is->subpq_rindex];
1088 if (is->subpq_size > 1)
1089 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1093 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1094 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1096 free_subpicture(sp);
1098 /* update queue size and signal for next picture */
1099 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1100 is->subpq_rindex = 0;
1102 SDL_LockMutex(is->subpq_mutex);
1104 SDL_CondSignal(is->subpq_cond);
1105 SDL_UnlockMutex(is->subpq_mutex);
1111 /* display picture */
1114 /* update queue size and signal for next picture */
1115 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1116 is->pictq_rindex = 0;
1118 SDL_LockMutex(is->pictq_mutex);
1120 SDL_CondSignal(is->pictq_cond);
1121 SDL_UnlockMutex(is->pictq_mutex);
1123 } else if (is->audio_st) {
1124 /* draw the next audio frame */
1126 schedule_refresh(is, 40);
1128 /* if only audio stream, then display the audio bars (better
1129 than nothing, just to test the implementation */
1131 /* display picture */
1134 schedule_refresh(is, 100);
1137 static int64_t last_time;
1139 int aqsize, vqsize, sqsize;
1142 cur_time = av_gettime();
1143 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
1148 aqsize = is->audioq.size;
1150 vqsize = is->videoq.size;
1151 if (is->subtitle_st)
1152 sqsize = is->subtitleq.size;
1154 if (is->audio_st && is->video_st)
1155 av_diff = get_audio_clock(is) - get_video_clock(is);
1156 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB \r",
1157 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize);
1159 last_time = cur_time;
1164 /* allocate a picture (needs to do that in main thread to avoid
1165 potential locking problems */
1166 static void alloc_picture(void *opaque)
1168 VideoState *is = opaque;
1171 vp = &is->pictq[is->pictq_windex];
1174 SDL_FreeYUVOverlay(vp->bmp);
1177 /* XXX: use generic function */
1178 /* XXX: disable overlay if no hardware acceleration or if RGB format */
1179 switch(is->video_st->codec->pix_fmt) {
1180 case PIX_FMT_YUV420P:
1181 case PIX_FMT_YUV422P:
1182 case PIX_FMT_YUV444P:
1183 case PIX_FMT_YUYV422:
1184 case PIX_FMT_YUV410P:
1185 case PIX_FMT_YUV411P:
1193 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
1194 is->video_st->codec->height,
1197 vp->width = is->video_st->codec->width;
1198 vp->height = is->video_st->codec->height;
1200 SDL_LockMutex(is->pictq_mutex);
1202 SDL_CondSignal(is->pictq_cond);
1203 SDL_UnlockMutex(is->pictq_mutex);
1208 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1210 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
1215 static struct SwsContext *img_convert_ctx;
1217 /* wait until we have space to put a new picture */
1218 SDL_LockMutex(is->pictq_mutex);
1219 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1220 !is->videoq.abort_request) {
1221 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1223 SDL_UnlockMutex(is->pictq_mutex);
1225 if (is->videoq.abort_request)
1228 vp = &is->pictq[is->pictq_windex];
1230 /* alloc or resize hardware picture buffer */
1232 vp->width != is->video_st->codec->width ||
1233 vp->height != is->video_st->codec->height) {
1238 /* the allocation must be done in the main thread to avoid
1240 event.type = FF_ALLOC_EVENT;
1241 event.user.data1 = is;
1242 SDL_PushEvent(&event);
1244 /* wait until the picture is allocated */
1245 SDL_LockMutex(is->pictq_mutex);
1246 while (!vp->allocated && !is->videoq.abort_request) {
1247 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1249 SDL_UnlockMutex(is->pictq_mutex);
1251 if (is->videoq.abort_request)
1255 /* if the frame is not skipped, then display it */
1257 /* get a pointer on the bitmap */
1258 SDL_LockYUVOverlay (vp->bmp);
1260 dst_pix_fmt = PIX_FMT_YUV420P;
1261 pict.data[0] = vp->bmp->pixels[0];
1262 pict.data[1] = vp->bmp->pixels[2];
1263 pict.data[2] = vp->bmp->pixels[1];
1265 pict.linesize[0] = vp->bmp->pitches[0];
1266 pict.linesize[1] = vp->bmp->pitches[2];
1267 pict.linesize[2] = vp->bmp->pitches[1];
1268 if (img_convert_ctx == NULL) {
1269 img_convert_ctx = sws_getContext(is->video_st->codec->width,
1270 is->video_st->codec->height, is->video_st->codec->pix_fmt,
1271 is->video_st->codec->width, is->video_st->codec->height,
1272 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1273 if (img_convert_ctx == NULL) {
1274 fprintf(stderr, "Cannot initialize the conversion context\n");
1278 sws_scale(img_convert_ctx, src_frame->data, src_frame->linesize,
1279 0, is->video_st->codec->height, pict.data, pict.linesize);
1280 /* update the bitmap content */
1281 SDL_UnlockYUVOverlay(vp->bmp);
1285 /* now we can update the picture count */
1286 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1287 is->pictq_windex = 0;
1288 SDL_LockMutex(is->pictq_mutex);
1290 SDL_UnlockMutex(is->pictq_mutex);
1296 * compute the exact PTS for the picture if it is omitted in the stream
1297 * @param pts1 the dts of the pkt / pts of the frame
1299 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
1301 double frame_delay, pts;
1306 /* update video clock with pts, if present */
1307 is->video_clock = pts;
1309 pts = is->video_clock;
1311 /* update video clock for next frame */
1312 frame_delay = av_q2d(is->video_st->codec->time_base);
1313 /* for MPEG2, the frame can be repeated, so we update the
1314 clock accordingly */
1315 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1316 is->video_clock += frame_delay;
1318 #if defined(DEBUG_SYNC) && 0
1321 if (src_frame->pict_type == FF_B_TYPE)
1323 else if (src_frame->pict_type == FF_I_TYPE)
1327 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1331 return queue_picture(is, src_frame, pts);
1334 static uint64_t global_video_pkt_pts= AV_NOPTS_VALUE;
1336 static int my_get_buffer(struct AVCodecContext *c, AVFrame *pic){
1337 int ret= avcodec_default_get_buffer(c, pic);
1338 uint64_t *pts= av_malloc(sizeof(uint64_t));
1339 *pts= global_video_pkt_pts;
1344 static void my_release_buffer(struct AVCodecContext *c, AVFrame *pic){
1345 if(pic) av_freep(&pic->opaque);
1346 avcodec_default_release_buffer(c, pic);
1349 static int video_thread(void *arg)
1351 VideoState *is = arg;
1352 AVPacket pkt1, *pkt = &pkt1;
1353 int len1, got_picture;
1354 AVFrame *frame= avcodec_alloc_frame();
1358 while (is->paused && !is->videoq.abort_request) {
1361 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1364 if(pkt->data == flush_pkt.data){
1365 avcodec_flush_buffers(is->video_st->codec);
1369 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1370 this packet, if any */
1371 global_video_pkt_pts= pkt->pts;
1372 len1 = avcodec_decode_video(is->video_st->codec,
1373 frame, &got_picture,
1374 pkt->data, pkt->size);
1376 if( (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
1377 && frame->opaque && *(uint64_t*)frame->opaque != AV_NOPTS_VALUE)
1378 pts= *(uint64_t*)frame->opaque;
1379 else if(pkt->dts != AV_NOPTS_VALUE)
1383 pts *= av_q2d(is->video_st->time_base);
1388 if (output_picture2(is, frame, pts) < 0)
1391 av_free_packet(pkt);
1394 stream_pause(cur_stream);
1401 static int subtitle_thread(void *arg)
1403 VideoState *is = arg;
1405 AVPacket pkt1, *pkt = &pkt1;
1406 int len1, got_subtitle;
1409 int r, g, b, y, u, v, a;
1412 while (is->paused && !is->subtitleq.abort_request) {
1415 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1418 if(pkt->data == flush_pkt.data){
1419 avcodec_flush_buffers(is->subtitle_st->codec);
1422 SDL_LockMutex(is->subpq_mutex);
1423 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1424 !is->subtitleq.abort_request) {
1425 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1427 SDL_UnlockMutex(is->subpq_mutex);
1429 if (is->subtitleq.abort_request)
1432 sp = &is->subpq[is->subpq_windex];
1434 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1435 this packet, if any */
1437 if (pkt->pts != AV_NOPTS_VALUE)
1438 pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1440 len1 = avcodec_decode_subtitle(is->subtitle_st->codec,
1441 &sp->sub, &got_subtitle,
1442 pkt->data, pkt->size);
1445 if (got_subtitle && sp->sub.format == 0) {
1448 for (i = 0; i < sp->sub.num_rects; i++)
1450 for (j = 0; j < sp->sub.rects[i].nb_colors; j++)
1452 RGBA_IN(r, g, b, a, sp->sub.rects[i].rgba_palette + j);
1453 y = RGB_TO_Y_CCIR(r, g, b);
1454 u = RGB_TO_U_CCIR(r, g, b, 0);
1455 v = RGB_TO_V_CCIR(r, g, b, 0);
1456 YUVA_OUT(sp->sub.rects[i].rgba_palette + j, y, u, v, a);
1460 /* now we can update the picture count */
1461 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1462 is->subpq_windex = 0;
1463 SDL_LockMutex(is->subpq_mutex);
1465 SDL_UnlockMutex(is->subpq_mutex);
1467 av_free_packet(pkt);
1470 // stream_pause(cur_stream);
1476 /* copy samples for viewing in editor window */
1477 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1479 int size, len, channels;
1481 channels = is->audio_st->codec->channels;
1483 size = samples_size / sizeof(short);
1485 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1488 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1490 is->sample_array_index += len;
1491 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1492 is->sample_array_index = 0;
1497 /* return the new audio buffer size (samples can be added or deleted
1498 to get better sync if video or external master clock) */
1499 static int synchronize_audio(VideoState *is, short *samples,
1500 int samples_size1, double pts)
1502 int n, samples_size;
1505 n = 2 * is->audio_st->codec->channels;
1506 samples_size = samples_size1;
1508 /* if not master, then we try to remove or add samples to correct the clock */
1509 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1510 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1511 double diff, avg_diff;
1512 int wanted_size, min_size, max_size, nb_samples;
1514 ref_clock = get_master_clock(is);
1515 diff = get_audio_clock(is) - ref_clock;
1517 if (diff < AV_NOSYNC_THRESHOLD) {
1518 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1519 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1520 /* not enough measures to have a correct estimate */
1521 is->audio_diff_avg_count++;
1523 /* estimate the A-V difference */
1524 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1526 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1527 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1528 nb_samples = samples_size / n;
1530 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1531 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1532 if (wanted_size < min_size)
1533 wanted_size = min_size;
1534 else if (wanted_size > max_size)
1535 wanted_size = max_size;
1537 /* add or remove samples to correction the synchro */
1538 if (wanted_size < samples_size) {
1539 /* remove samples */
1540 samples_size = wanted_size;
1541 } else if (wanted_size > samples_size) {
1542 uint8_t *samples_end, *q;
1546 nb = (samples_size - wanted_size);
1547 samples_end = (uint8_t *)samples + samples_size - n;
1548 q = samples_end + n;
1550 memcpy(q, samples_end, n);
1554 samples_size = wanted_size;
1558 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1559 diff, avg_diff, samples_size - samples_size1,
1560 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1564 /* too big difference : may be initial PTS errors, so
1566 is->audio_diff_avg_count = 0;
1567 is->audio_diff_cum = 0;
1571 return samples_size;
1574 /* decode one audio frame and returns its uncompressed size */
1575 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, int buf_size, double *pts_ptr)
1577 AVPacket *pkt = &is->audio_pkt;
1578 int n, len1, data_size;
1582 /* NOTE: the audio packet can contain several frames */
1583 while (is->audio_pkt_size > 0) {
1584 data_size = buf_size;
1585 len1 = avcodec_decode_audio2(is->audio_st->codec,
1586 (int16_t *)audio_buf, &data_size,
1587 is->audio_pkt_data, is->audio_pkt_size);
1589 /* if error, we skip the frame */
1590 is->audio_pkt_size = 0;
1594 is->audio_pkt_data += len1;
1595 is->audio_pkt_size -= len1;
1598 /* if no pts, then compute it */
1599 pts = is->audio_clock;
1601 n = 2 * is->audio_st->codec->channels;
1602 is->audio_clock += (double)data_size /
1603 (double)(n * is->audio_st->codec->sample_rate);
1604 #if defined(DEBUG_SYNC)
1606 static double last_clock;
1607 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1608 is->audio_clock - last_clock,
1609 is->audio_clock, pts);
1610 last_clock = is->audio_clock;
1616 /* free the current packet */
1618 av_free_packet(pkt);
1620 if (is->paused || is->audioq.abort_request) {
1624 /* read next packet */
1625 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1627 if(pkt->data == flush_pkt.data){
1628 avcodec_flush_buffers(is->audio_st->codec);
1632 is->audio_pkt_data = pkt->data;
1633 is->audio_pkt_size = pkt->size;
1635 /* if update the audio clock with the pts */
1636 if (pkt->pts != AV_NOPTS_VALUE) {
1637 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1642 /* get the current audio output buffer size, in samples. With SDL, we
1643 cannot have a precise information */
1644 static int audio_write_get_buf_size(VideoState *is)
1646 return is->audio_buf_size - is->audio_buf_index;
1650 /* prepare a new audio buffer */
1651 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1653 VideoState *is = opaque;
1654 int audio_size, len1;
1657 audio_callback_time = av_gettime();
1660 if (is->audio_buf_index >= is->audio_buf_size) {
1661 audio_size = audio_decode_frame(is, is->audio_buf, sizeof(is->audio_buf), &pts);
1662 if (audio_size < 0) {
1663 /* if error, just output silence */
1664 is->audio_buf_size = 1024;
1665 memset(is->audio_buf, 0, is->audio_buf_size);
1668 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1669 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1671 is->audio_buf_size = audio_size;
1673 is->audio_buf_index = 0;
1675 len1 = is->audio_buf_size - is->audio_buf_index;
1678 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1681 is->audio_buf_index += len1;
1685 /* open a given stream. Return 0 if OK */
1686 static int stream_component_open(VideoState *is, int stream_index)
1688 AVFormatContext *ic = is->ic;
1689 AVCodecContext *enc;
1691 SDL_AudioSpec wanted_spec, spec;
1693 if (stream_index < 0 || stream_index >= ic->nb_streams)
1695 enc = ic->streams[stream_index]->codec;
1697 /* prepare audio output */
1698 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1699 wanted_spec.freq = enc->sample_rate;
1700 wanted_spec.format = AUDIO_S16SYS;
1701 /* hack for AC3. XXX: suppress that */
1702 if (enc->channels > 2)
1704 wanted_spec.channels = enc->channels;
1705 wanted_spec.silence = 0;
1706 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1707 wanted_spec.callback = sdl_audio_callback;
1708 wanted_spec.userdata = is;
1709 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1710 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1713 is->audio_hw_buf_size = spec.size;
1716 codec = avcodec_find_decoder(enc->codec_id);
1717 enc->debug_mv = debug_mv;
1719 enc->workaround_bugs = workaround_bugs;
1720 enc->lowres = lowres;
1721 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1722 enc->idct_algo= idct;
1723 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1724 enc->skip_frame= skip_frame;
1725 enc->skip_idct= skip_idct;
1726 enc->skip_loop_filter= skip_loop_filter;
1727 enc->error_resilience= error_resilience;
1728 enc->error_concealment= error_concealment;
1730 avcodec_open(enc, codec) < 0)
1733 avcodec_thread_init(enc, thread_count);
1734 enc->thread_count= thread_count;
1735 switch(enc->codec_type) {
1736 case CODEC_TYPE_AUDIO:
1737 is->audio_stream = stream_index;
1738 is->audio_st = ic->streams[stream_index];
1739 is->audio_buf_size = 0;
1740 is->audio_buf_index = 0;
1742 /* init averaging filter */
1743 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1744 is->audio_diff_avg_count = 0;
1745 /* since we do not have a precise anough audio fifo fullness,
1746 we correct audio sync only if larger than this threshold */
1747 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1749 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1750 packet_queue_init(&is->audioq);
1753 case CODEC_TYPE_VIDEO:
1754 is->video_stream = stream_index;
1755 is->video_st = ic->streams[stream_index];
1757 is->frame_last_delay = 40e-3;
1758 is->frame_timer = (double)av_gettime() / 1000000.0;
1759 is->video_current_pts_time = av_gettime();
1761 packet_queue_init(&is->videoq);
1762 is->video_tid = SDL_CreateThread(video_thread, is);
1764 enc-> get_buffer= my_get_buffer;
1765 enc->release_buffer= my_release_buffer;
1767 case CODEC_TYPE_SUBTITLE:
1768 is->subtitle_stream = stream_index;
1769 is->subtitle_st = ic->streams[stream_index];
1770 packet_queue_init(&is->subtitleq);
1772 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
1780 static void stream_component_close(VideoState *is, int stream_index)
1782 AVFormatContext *ic = is->ic;
1783 AVCodecContext *enc;
1785 if (stream_index < 0 || stream_index >= ic->nb_streams)
1787 enc = ic->streams[stream_index]->codec;
1789 switch(enc->codec_type) {
1790 case CODEC_TYPE_AUDIO:
1791 packet_queue_abort(&is->audioq);
1795 packet_queue_end(&is->audioq);
1797 case CODEC_TYPE_VIDEO:
1798 packet_queue_abort(&is->videoq);
1800 /* note: we also signal this mutex to make sure we deblock the
1801 video thread in all cases */
1802 SDL_LockMutex(is->pictq_mutex);
1803 SDL_CondSignal(is->pictq_cond);
1804 SDL_UnlockMutex(is->pictq_mutex);
1806 SDL_WaitThread(is->video_tid, NULL);
1808 packet_queue_end(&is->videoq);
1810 case CODEC_TYPE_SUBTITLE:
1811 packet_queue_abort(&is->subtitleq);
1813 /* note: we also signal this mutex to make sure we deblock the
1814 video thread in all cases */
1815 SDL_LockMutex(is->subpq_mutex);
1816 is->subtitle_stream_changed = 1;
1818 SDL_CondSignal(is->subpq_cond);
1819 SDL_UnlockMutex(is->subpq_mutex);
1821 SDL_WaitThread(is->subtitle_tid, NULL);
1823 packet_queue_end(&is->subtitleq);
1830 switch(enc->codec_type) {
1831 case CODEC_TYPE_AUDIO:
1832 is->audio_st = NULL;
1833 is->audio_stream = -1;
1835 case CODEC_TYPE_VIDEO:
1836 is->video_st = NULL;
1837 is->video_stream = -1;
1839 case CODEC_TYPE_SUBTITLE:
1840 is->subtitle_st = NULL;
1841 is->subtitle_stream = -1;
1848 static void dump_stream_info(const AVFormatContext *s)
1851 fprintf(stderr, "Track: %d\n", s->track);
1852 if (s->title[0] != '\0')
1853 fprintf(stderr, "Title: %s\n", s->title);
1854 if (s->author[0] != '\0')
1855 fprintf(stderr, "Author: %s\n", s->author);
1856 if (s->copyright[0] != '\0')
1857 fprintf(stderr, "Copyright: %s\n", s->copyright);
1858 if (s->comment[0] != '\0')
1859 fprintf(stderr, "Comment: %s\n", s->comment);
1860 if (s->album[0] != '\0')
1861 fprintf(stderr, "Album: %s\n", s->album);
1863 fprintf(stderr, "Year: %d\n", s->year);
1864 if (s->genre[0] != '\0')
1865 fprintf(stderr, "Genre: %s\n", s->genre);
1868 /* since we have only one decoding thread, we can use a global
1869 variable instead of a thread local variable */
1870 static VideoState *global_video_state;
1872 static int decode_interrupt_cb(void)
1874 return (global_video_state && global_video_state->abort_request);
1877 /* this thread gets the stream from the disk or the network */
1878 static int decode_thread(void *arg)
1880 VideoState *is = arg;
1881 AVFormatContext *ic;
1882 int err, i, ret, video_index, audio_index, use_play;
1883 AVPacket pkt1, *pkt = &pkt1;
1884 AVFormatParameters params, *ap = ¶ms;
1888 is->video_stream = -1;
1889 is->audio_stream = -1;
1890 is->subtitle_stream = -1;
1892 global_video_state = is;
1893 url_set_interrupt_cb(decode_interrupt_cb);
1895 memset(ap, 0, sizeof(*ap));
1896 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1899 ap->width = frame_width;
1900 ap->height= frame_height;
1901 ap->time_base= (AVRational){1, 25};
1902 ap->pix_fmt = frame_pix_fmt;
1904 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1906 print_error(is->filename, err);
1911 #ifdef CONFIG_NETWORK
1912 use_play = (ic->iformat == &rtsp_demuxer);
1918 ic->flags |= AVFMT_FLAG_GENPTS;
1921 err = av_find_stream_info(ic);
1923 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1927 ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe shouldnt use url_feof() to test for the end
1930 /* if seeking requested, we execute it */
1931 if (start_time != AV_NOPTS_VALUE) {
1934 timestamp = start_time;
1935 /* add the stream start time */
1936 if (ic->start_time != AV_NOPTS_VALUE)
1937 timestamp += ic->start_time;
1938 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1940 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1941 is->filename, (double)timestamp / AV_TIME_BASE);
1945 /* now we can begin to play (RTSP stream only) */
1949 err = av_find_stream_info(ic);
1951 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1957 for(i = 0; i < ic->nb_streams; i++) {
1958 AVCodecContext *enc = ic->streams[i]->codec;
1959 switch(enc->codec_type) {
1960 case CODEC_TYPE_AUDIO:
1961 if ((audio_index < 0 || wanted_audio_stream-- > 0) && !audio_disable)
1964 case CODEC_TYPE_VIDEO:
1965 if (video_index < 0 && !video_disable)
1973 dump_format(ic, 0, is->filename, 0);
1974 dump_stream_info(ic);
1977 /* open the streams */
1978 if (audio_index >= 0) {
1979 stream_component_open(is, audio_index);
1982 if (video_index >= 0) {
1983 stream_component_open(is, video_index);
1985 if (!display_disable)
1989 if (is->video_stream < 0 && is->audio_stream < 0) {
1990 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1996 if (is->abort_request)
1998 #ifdef CONFIG_NETWORK
1999 if (is->paused != is->last_paused) {
2000 is->last_paused = is->paused;
2006 if (is->paused && ic->iformat == &rtsp_demuxer) {
2007 /* wait 10 ms to avoid trying to get another packet */
2014 int stream_index= -1;
2015 int64_t seek_target= is->seek_pos;
2017 if (is-> video_stream >= 0) stream_index= is-> video_stream;
2018 else if(is-> audio_stream >= 0) stream_index= is-> audio_stream;
2019 else if(is->subtitle_stream >= 0) stream_index= is->subtitle_stream;
2021 if(stream_index>=0){
2022 seek_target= av_rescale_q(seek_target, AV_TIME_BASE_Q, ic->streams[stream_index]->time_base);
2025 ret = av_seek_frame(is->ic, stream_index, seek_target, is->seek_flags);
2027 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2029 if (is->audio_stream >= 0) {
2030 packet_queue_flush(&is->audioq);
2031 packet_queue_put(&is->audioq, &flush_pkt);
2033 if (is->subtitle_stream >= 0) {
2034 packet_queue_flush(&is->subtitleq);
2035 packet_queue_put(&is->subtitleq, &flush_pkt);
2037 if (is->video_stream >= 0) {
2038 packet_queue_flush(&is->videoq);
2039 packet_queue_put(&is->videoq, &flush_pkt);
2045 /* if the queue are full, no need to read more */
2046 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
2047 is->videoq.size > MAX_VIDEOQ_SIZE ||
2048 is->subtitleq.size > MAX_SUBTITLEQ_SIZE ||
2049 url_feof(&ic->pb)) {
2054 ret = av_read_frame(ic, pkt);
2056 if (url_ferror(&ic->pb) == 0) {
2057 SDL_Delay(100); /* wait for user event */
2062 if (pkt->stream_index == is->audio_stream) {
2063 packet_queue_put(&is->audioq, pkt);
2064 } else if (pkt->stream_index == is->video_stream) {
2065 packet_queue_put(&is->videoq, pkt);
2066 } else if (pkt->stream_index == is->subtitle_stream) {
2067 packet_queue_put(&is->subtitleq, pkt);
2069 av_free_packet(pkt);
2072 /* wait until the end */
2073 while (!is->abort_request) {
2079 /* disable interrupting */
2080 global_video_state = NULL;
2082 /* close each stream */
2083 if (is->audio_stream >= 0)
2084 stream_component_close(is, is->audio_stream);
2085 if (is->video_stream >= 0)
2086 stream_component_close(is, is->video_stream);
2087 if (is->subtitle_stream >= 0)
2088 stream_component_close(is, is->subtitle_stream);
2090 av_close_input_file(is->ic);
2091 is->ic = NULL; /* safety */
2093 url_set_interrupt_cb(NULL);
2098 event.type = FF_QUIT_EVENT;
2099 event.user.data1 = is;
2100 SDL_PushEvent(&event);
2105 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2109 is = av_mallocz(sizeof(VideoState));
2112 pstrcpy(is->filename, sizeof(is->filename), filename);
2113 is->iformat = iformat;
2117 /* start video display */
2118 is->pictq_mutex = SDL_CreateMutex();
2119 is->pictq_cond = SDL_CreateCond();
2121 is->subpq_mutex = SDL_CreateMutex();
2122 is->subpq_cond = SDL_CreateCond();
2124 /* add the refresh timer to draw the picture */
2125 schedule_refresh(is, 40);
2127 is->av_sync_type = av_sync_type;
2128 is->parse_tid = SDL_CreateThread(decode_thread, is);
2129 if (!is->parse_tid) {
2136 static void stream_close(VideoState *is)
2140 /* XXX: use a special url_shutdown call to abort parse cleanly */
2141 is->abort_request = 1;
2142 SDL_WaitThread(is->parse_tid, NULL);
2144 /* free all pictures */
2145 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2148 SDL_FreeYUVOverlay(vp->bmp);
2152 SDL_DestroyMutex(is->pictq_mutex);
2153 SDL_DestroyCond(is->pictq_cond);
2154 SDL_DestroyMutex(is->subpq_mutex);
2155 SDL_DestroyCond(is->subpq_cond);
2158 static void stream_cycle_channel(VideoState *is, int codec_type)
2160 AVFormatContext *ic = is->ic;
2161 int start_index, stream_index;
2164 if (codec_type == CODEC_TYPE_VIDEO)
2165 start_index = is->video_stream;
2166 else if (codec_type == CODEC_TYPE_AUDIO)
2167 start_index = is->audio_stream;
2169 start_index = is->subtitle_stream;
2170 if (start_index < (codec_type == CODEC_TYPE_SUBTITLE ? -1 : 0))
2172 stream_index = start_index;
2174 if (++stream_index >= is->ic->nb_streams)
2176 if (codec_type == CODEC_TYPE_SUBTITLE)
2183 if (stream_index == start_index)
2185 st = ic->streams[stream_index];
2186 if (st->codec->codec_type == codec_type) {
2187 /* check that parameters are OK */
2188 switch(codec_type) {
2189 case CODEC_TYPE_AUDIO:
2190 if (st->codec->sample_rate != 0 &&
2191 st->codec->channels != 0)
2194 case CODEC_TYPE_VIDEO:
2195 case CODEC_TYPE_SUBTITLE:
2203 stream_component_close(is, start_index);
2204 stream_component_open(is, stream_index);
2208 static void toggle_full_screen(void)
2210 is_full_screen = !is_full_screen;
2211 if (!fs_screen_width) {
2212 /* use default SDL method */
2213 // SDL_WM_ToggleFullScreen(screen);
2215 video_open(cur_stream);
2218 static void toggle_pause(void)
2221 stream_pause(cur_stream);
2225 static void step_to_next_frame(void)
2228 if (cur_stream->paused)
2229 cur_stream->paused=0;
2230 cur_stream->video_current_pts = get_video_clock(cur_stream);
2235 static void do_exit(void)
2238 stream_close(cur_stream);
2247 static void toggle_audio_display(void)
2250 cur_stream->show_audio = !cur_stream->show_audio;
2254 /* handle an event sent by the GUI */
2255 static void event_loop(void)
2258 double incr, pos, frac;
2261 SDL_WaitEvent(&event);
2262 switch(event.type) {
2264 switch(event.key.keysym.sym) {
2270 toggle_full_screen();
2276 case SDLK_s: //S: Step to next frame
2277 step_to_next_frame();
2281 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
2285 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
2289 stream_cycle_channel(cur_stream, CODEC_TYPE_SUBTITLE);
2292 toggle_audio_display();
2307 if (seek_by_bytes) {
2308 pos = url_ftell(&cur_stream->ic->pb);
2309 if (cur_stream->ic->bit_rate)
2310 incr *= cur_stream->ic->bit_rate / 60.0;
2314 stream_seek(cur_stream, pos, incr);
2316 pos = get_master_clock(cur_stream);
2318 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
2326 case SDL_MOUSEBUTTONDOWN:
2329 int tns, thh, tmm, tss;
2330 tns = cur_stream->ic->duration/1000000LL;
2332 tmm = (tns%3600)/60;
2334 frac = (double)event.button.x/(double)cur_stream->width;
2339 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2340 hh, mm, ss, thh, tmm, tss);
2341 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
2344 case SDL_VIDEORESIZE:
2346 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2347 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2348 screen_width = cur_stream->width = event.resize.w;
2349 screen_height= cur_stream->height= event.resize.h;
2356 case FF_ALLOC_EVENT:
2357 video_open(event.user.data1);
2358 alloc_picture(event.user.data1);
2360 case FF_REFRESH_EVENT:
2361 video_refresh_timer(event.user.data1);
2369 static void opt_frame_size(const char *arg)
2371 if (parse_image_size(&frame_width, &frame_height, arg) < 0) {
2372 fprintf(stderr, "Incorrect frame size\n");
2375 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2376 fprintf(stderr, "Frame size must be a multiple of 2\n");
2381 static void opt_width(const char *arg)
2383 screen_width = atoi(arg);
2384 if(screen_width<=0){
2385 fprintf(stderr, "invalid width\n");
2390 static void opt_height(const char *arg)
2392 screen_height = atoi(arg);
2393 if(screen_height<=0){
2394 fprintf(stderr, "invalid height\n");
2399 static void opt_format(const char *arg)
2401 file_iformat = av_find_input_format(arg);
2402 if (!file_iformat) {
2403 fprintf(stderr, "Unknown input format: %s\n", arg);
2408 static void opt_frame_pix_fmt(const char *arg)
2410 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2413 #ifdef CONFIG_NETWORK
2414 static void opt_rtp_tcp(void)
2416 /* only tcp protocol */
2417 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
2421 static void opt_sync(const char *arg)
2423 if (!strcmp(arg, "audio"))
2424 av_sync_type = AV_SYNC_AUDIO_MASTER;
2425 else if (!strcmp(arg, "video"))
2426 av_sync_type = AV_SYNC_VIDEO_MASTER;
2427 else if (!strcmp(arg, "ext"))
2428 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2433 static void opt_seek(const char *arg)
2435 start_time = parse_date(arg, 1);
2438 static void opt_debug(const char *arg)
2444 static void opt_vismv(const char *arg)
2446 debug_mv = atoi(arg);
2449 static void opt_thread_count(const char *arg)
2451 thread_count= atoi(arg);
2452 #if !defined(HAVE_THREADS)
2453 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2457 const OptionDef options[] = {
2458 { "h", 0, {(void*)show_help}, "show help" },
2459 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
2460 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
2461 { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2462 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2463 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2464 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2465 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_audio_stream}, "", "" },
2466 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2467 { "bytes", OPT_BOOL, {(void*)&seek_by_bytes}, "seek by bytes" },
2468 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2469 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2470 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2471 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2472 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
2473 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2474 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
2475 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2476 { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2477 { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
2478 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2479 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2480 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2481 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2482 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
2483 { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_resilience}, "set error detection threshold (0-4)", "threshold" },
2484 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
2485 #ifdef CONFIG_NETWORK
2486 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
2488 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2489 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2493 void show_help(void)
2495 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003-2006 Fabrice Bellard, et al.\n"
2496 "usage: ffplay [options] input_file\n"
2497 "Simple media player\n");
2499 show_help_options(options, "Main options:\n",
2501 show_help_options(options, "\nAdvanced options:\n",
2502 OPT_EXPERT, OPT_EXPERT);
2503 printf("\nWhile playing:\n"
2505 "f toggle full screen\n"
2507 "a cycle audio channel\n"
2508 "v cycle video channel\n"
2509 "t cycle subtitle channel\n"
2510 "w show audio waves\n"
2511 "left/right seek backward/forward 10 seconds\n"
2512 "down/up seek backward/forward 1 minute\n"
2513 "mouse click seek to percentage in file corresponding to fraction of width\n"
2518 void parse_arg_file(const char *filename)
2520 if (!strcmp(filename, "-"))
2522 input_filename = filename;
2525 /* Called from the main */
2526 int main(int argc, char **argv)
2530 /* register all codecs, demux and protocols */
2534 MorphToPM(); // Morph the VIO application to a PM one to be able to use Win* functions
2536 // Make stdout and stderr unbuffered
2537 setbuf( stdout, NULL );
2538 setbuf( stderr, NULL );
2541 parse_options(argc, argv, options);
2543 if (!input_filename)
2546 if (display_disable) {
2549 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2550 #if !defined(__MINGW32__) && !defined(CONFIG_DARWIN)
2551 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 or darwin */
2553 if (SDL_Init (flags)) {
2554 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2558 if (!display_disable) {
2559 #ifdef HAVE_SDL_VIDEO_SIZE
2560 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2561 fs_screen_width = vi->current_w;
2562 fs_screen_height = vi->current_h;
2566 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2567 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
2568 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2569 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2571 av_init_packet(&flush_pkt);
2572 flush_pkt.data= "FLUSH";
2574 cur_stream = stream_open(input_filename, file_iformat);