2 * avplay : Simple Media Player based on the Libav libraries
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/avstring.h"
27 #include "libavutil/colorspace.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/parseutils.h"
33 #include "libavutil/samplefmt.h"
34 #include "libavutil/time.h"
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavresample/avresample.h"
39 #include "libavutil/opt.h"
40 #include "libavcodec/avfft.h"
43 # include "libavfilter/avfilter.h"
44 # include "libavfilter/avfiltergraph.h"
45 # include "libavfilter/buffersink.h"
46 # include "libavfilter/buffersrc.h"
52 #include <SDL_thread.h>
55 #undef main /* We don't want SDL to override our main() */
60 const char program_name[] = "avplay";
61 const int program_birth_year = 2003;
63 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
64 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
67 /* SDL audio buffer size, in samples. Should be small to have precise
68 A/V sync as SDL does not have hardware buffer fullness info. */
69 #define SDL_AUDIO_BUFFER_SIZE 1024
71 /* no AV sync correction is done if below the AV sync threshold */
72 #define AV_SYNC_THRESHOLD 0.01
73 /* no AV correction is done if too big error */
74 #define AV_NOSYNC_THRESHOLD 10.0
76 #define FRAME_SKIP_FACTOR 0.05
78 /* maximum audio speed change to get correct sync */
79 #define SAMPLE_CORRECTION_PERCENT_MAX 10
81 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
82 #define AUDIO_DIFF_AVG_NB 20
84 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
85 #define SAMPLE_ARRAY_SIZE (2 * 65536)
87 static int sws_flags = SWS_BICUBIC;
89 typedef struct PacketQueue {
90 AVPacketList *first_pkt, *last_pkt;
98 #define VIDEO_PICTURE_QUEUE_SIZE 2
99 #define SUBPICTURE_QUEUE_SIZE 4
101 typedef struct VideoPicture {
102 double pts; ///< presentation time stamp for this picture
103 double target_clock; ///< av_gettime() time at which this should be displayed ideally
104 int64_t pos; ///< byte position in file
106 int width, height; /* source height & width */
109 enum PixelFormat pix_fmt;
112 AVFilterBufferRef *picref;
116 typedef struct SubPicture {
117 double pts; /* presentation time stamp for this picture */
122 AV_SYNC_AUDIO_MASTER, /* default choice */
123 AV_SYNC_VIDEO_MASTER,
124 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
127 typedef struct VideoState {
128 SDL_Thread *parse_tid;
129 SDL_Thread *video_tid;
130 SDL_Thread *refresh_tid;
131 AVInputFormat *iformat;
140 int read_pause_return;
146 double external_clock; /* external clock base */
147 int64_t external_clock_time;
150 double audio_diff_cum; /* used for AV difference average computation */
151 double audio_diff_avg_coef;
152 double audio_diff_threshold;
153 int audio_diff_avg_count;
156 int audio_hw_buf_size;
157 uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
160 unsigned int audio_buf_size; /* in bytes */
161 int audio_buf_index; /* in bytes */
162 AVPacket audio_pkt_temp;
164 enum AVSampleFormat sdl_sample_fmt;
165 uint64_t sdl_channel_layout;
167 enum AVSampleFormat resample_sample_fmt;
168 uint64_t resample_channel_layout;
169 AVAudioResampleContext *avr;
172 int show_audio; /* if true, display audio samples */
173 int16_t sample_array[SAMPLE_ARRAY_SIZE];
174 int sample_array_index;
178 FFTSample *rdft_data;
181 SDL_Thread *subtitle_tid;
183 int subtitle_stream_changed;
184 AVStream *subtitle_st;
185 PacketQueue subtitleq;
186 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
187 int subpq_size, subpq_rindex, subpq_windex;
188 SDL_mutex *subpq_mutex;
189 SDL_cond *subpq_cond;
192 double frame_last_pts;
193 double frame_last_delay;
194 double video_clock; ///< pts of last decoded frame / predicted pts of next decoded frame
198 double video_current_pts; ///< current displayed pts (different from video_clock if frame fifos are used)
199 double video_current_pts_drift; ///< video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
200 int64_t video_current_pos; ///< current displayed file pos
201 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
202 int pictq_size, pictq_rindex, pictq_windex;
203 SDL_mutex *pictq_mutex;
204 SDL_cond *pictq_cond;
206 struct SwsContext *img_convert_ctx;
209 // QETimer *video_timer;
211 int width, height, xleft, ytop;
213 PtsCorrectionContext pts_ctx;
216 AVFilterContext *in_video_filter; ///< the first filter in the video chain
217 AVFilterContext *out_video_filter; ///< the last filter in the video chain
219 FrameBuffer *buffer_pool;
223 float skip_frames_index;
227 static void show_help(void);
229 /* options specified by the user */
230 static AVInputFormat *file_iformat;
231 static const char *input_filename;
232 static const char *window_title;
233 static int fs_screen_width;
234 static int fs_screen_height;
235 static int screen_width = 0;
236 static int screen_height = 0;
237 static int audio_disable;
238 static int video_disable;
239 static int wanted_stream[AVMEDIA_TYPE_NB] = {
240 [AVMEDIA_TYPE_AUDIO] = -1,
241 [AVMEDIA_TYPE_VIDEO] = -1,
242 [AVMEDIA_TYPE_SUBTITLE] = -1,
244 static int seek_by_bytes = -1;
245 static int display_disable;
246 static int show_status = 1;
247 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
248 static int64_t start_time = AV_NOPTS_VALUE;
249 static int64_t duration = AV_NOPTS_VALUE;
250 static int debug = 0;
251 static int debug_mv = 0;
253 static int workaround_bugs = 1;
255 static int genpts = 0;
256 static int idct = FF_IDCT_AUTO;
257 static enum AVDiscard skip_frame = AVDISCARD_DEFAULT;
258 static enum AVDiscard skip_idct = AVDISCARD_DEFAULT;
259 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
260 static int error_concealment = 3;
261 static int decoder_reorder_pts = -1;
263 static int exit_on_keydown;
264 static int exit_on_mousedown;
266 static int framedrop = 1;
267 static int infinite_buffer = 0;
269 static int rdftspeed = 20;
271 static char *vfilters = NULL;
274 /* current context */
275 static int is_full_screen;
276 static VideoState *cur_stream;
277 static int64_t audio_callback_time;
279 static AVPacket flush_pkt;
281 #define FF_ALLOC_EVENT (SDL_USEREVENT)
282 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
283 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
285 static SDL_Surface *screen;
287 void exit_program(int ret)
292 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
294 /* packet queue handling */
295 static void packet_queue_init(PacketQueue *q)
297 memset(q, 0, sizeof(PacketQueue));
298 q->mutex = SDL_CreateMutex();
299 q->cond = SDL_CreateCond();
300 packet_queue_put(q, &flush_pkt);
303 static void packet_queue_flush(PacketQueue *q)
305 AVPacketList *pkt, *pkt1;
307 SDL_LockMutex(q->mutex);
308 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
310 av_free_packet(&pkt->pkt);
317 SDL_UnlockMutex(q->mutex);
320 static void packet_queue_end(PacketQueue *q)
322 packet_queue_flush(q);
323 SDL_DestroyMutex(q->mutex);
324 SDL_DestroyCond(q->cond);
327 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
331 /* duplicate the packet */
332 if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
335 pkt1 = av_malloc(sizeof(AVPacketList));
342 SDL_LockMutex(q->mutex);
348 q->last_pkt->next = pkt1;
351 q->size += pkt1->pkt.size + sizeof(*pkt1);
352 /* XXX: should duplicate packet data in DV case */
353 SDL_CondSignal(q->cond);
355 SDL_UnlockMutex(q->mutex);
359 static void packet_queue_abort(PacketQueue *q)
361 SDL_LockMutex(q->mutex);
363 q->abort_request = 1;
365 SDL_CondSignal(q->cond);
367 SDL_UnlockMutex(q->mutex);
370 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
371 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
376 SDL_LockMutex(q->mutex);
379 if (q->abort_request) {
386 q->first_pkt = pkt1->next;
390 q->size -= pkt1->pkt.size + sizeof(*pkt1);
399 SDL_CondWait(q->cond, q->mutex);
402 SDL_UnlockMutex(q->mutex);
406 static inline void fill_rectangle(SDL_Surface *screen,
407 int x, int y, int w, int h, int color)
414 SDL_FillRect(screen, &rect, color);
417 #define ALPHA_BLEND(a, oldp, newp, s)\
418 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
420 #define RGBA_IN(r, g, b, a, s)\
422 unsigned int v = ((const uint32_t *)(s))[0];\
423 a = (v >> 24) & 0xff;\
424 r = (v >> 16) & 0xff;\
425 g = (v >> 8) & 0xff;\
429 #define YUVA_IN(y, u, v, a, s, pal)\
431 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
432 a = (val >> 24) & 0xff;\
433 y = (val >> 16) & 0xff;\
434 u = (val >> 8) & 0xff;\
438 #define YUVA_OUT(d, y, u, v, a)\
440 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
446 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
448 int wrap, wrap3, width2, skip2;
449 int y, u, v, a, u1, v1, a1, w, h;
450 uint8_t *lum, *cb, *cr;
453 int dstx, dsty, dstw, dsth;
455 dstw = av_clip(rect->w, 0, imgw);
456 dsth = av_clip(rect->h, 0, imgh);
457 dstx = av_clip(rect->x, 0, imgw - dstw);
458 dsty = av_clip(rect->y, 0, imgh - dsth);
459 lum = dst->data[0] + dsty * dst->linesize[0];
460 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
461 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
463 width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
465 wrap = dst->linesize[0];
466 wrap3 = rect->pict.linesize[0];
467 p = rect->pict.data[0];
468 pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
476 YUVA_IN(y, u, v, a, p, pal);
477 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
478 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
479 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
485 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
486 YUVA_IN(y, u, v, a, p, pal);
490 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
492 YUVA_IN(y, u, v, a, p + BPP, pal);
496 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
497 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
498 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
505 YUVA_IN(y, u, v, a, p, pal);
506 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
507 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
508 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
512 p += wrap3 - dstw * BPP;
513 lum += wrap - dstw - dstx;
514 cb += dst->linesize[1] - width2 - skip2;
515 cr += dst->linesize[2] - width2 - skip2;
517 for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
523 YUVA_IN(y, u, v, a, p, pal);
527 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
530 YUVA_IN(y, u, v, a, p, pal);
534 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
535 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
536 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
542 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
543 YUVA_IN(y, u, v, a, p, pal);
547 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
549 YUVA_IN(y, u, v, a, p + BPP, pal);
553 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
557 YUVA_IN(y, u, v, a, p, pal);
561 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
563 YUVA_IN(y, u, v, a, p + BPP, pal);
567 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
569 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
570 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
574 p += -wrap3 + 2 * BPP;
578 YUVA_IN(y, u, v, a, p, pal);
582 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
585 YUVA_IN(y, u, v, a, p, pal);
589 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
590 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
591 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
597 p += wrap3 + (wrap3 - dstw * BPP);
598 lum += wrap + (wrap - dstw - dstx);
599 cb += dst->linesize[1] - width2 - skip2;
600 cr += dst->linesize[2] - width2 - skip2;
602 /* handle odd height */
609 YUVA_IN(y, u, v, a, p, pal);
610 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
611 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
612 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
618 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
619 YUVA_IN(y, u, v, a, p, pal);
623 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
625 YUVA_IN(y, u, v, a, p + BPP, pal);
629 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
630 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
631 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
638 YUVA_IN(y, u, v, a, p, pal);
639 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
640 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
641 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
646 static void free_subpicture(SubPicture *sp)
648 avsubtitle_free(&sp->sub);
651 static void video_image_display(VideoState *is)
657 int width, height, x, y;
661 vp = &is->pictq[is->pictq_rindex];
664 if (vp->picref->video->pixel_aspect.num == 0)
667 aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
670 /* XXX: use variable in the frame */
671 if (is->video_st->sample_aspect_ratio.num)
672 aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
673 else if (is->video_st->codec->sample_aspect_ratio.num)
674 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
678 if (aspect_ratio <= 0.0)
680 aspect_ratio *= (float)vp->width / (float)vp->height;
684 if (is->subpq_size > 0)
686 sp = &is->subpq[is->subpq_rindex];
688 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
690 SDL_LockYUVOverlay (vp->bmp);
692 pict.data[0] = vp->bmp->pixels[0];
693 pict.data[1] = vp->bmp->pixels[2];
694 pict.data[2] = vp->bmp->pixels[1];
696 pict.linesize[0] = vp->bmp->pitches[0];
697 pict.linesize[1] = vp->bmp->pitches[2];
698 pict.linesize[2] = vp->bmp->pitches[1];
700 for (i = 0; i < sp->sub.num_rects; i++)
701 blend_subrect(&pict, sp->sub.rects[i],
702 vp->bmp->w, vp->bmp->h);
704 SDL_UnlockYUVOverlay (vp->bmp);
710 /* XXX: we suppose the screen has a 1.0 pixel ratio */
712 width = ((int)rint(height * aspect_ratio)) & ~1;
713 if (width > is->width) {
715 height = ((int)rint(width / aspect_ratio)) & ~1;
717 x = (is->width - width) / 2;
718 y = (is->height - height) / 2;
719 is->no_background = 0;
720 rect.x = is->xleft + x;
721 rect.y = is->ytop + y;
724 SDL_DisplayYUVOverlay(vp->bmp, &rect);
728 /* get the current audio output buffer size, in samples. With SDL, we
729 cannot have a precise information */
730 static int audio_write_get_buf_size(VideoState *is)
732 return is->audio_buf_size - is->audio_buf_index;
735 static inline int compute_mod(int a, int b)
744 static void video_audio_display(VideoState *s)
746 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
747 int ch, channels, h, h2, bgcolor, fgcolor;
749 int rdft_bits, nb_freq;
751 for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
753 nb_freq = 1 << (rdft_bits - 1);
755 /* compute display index : center on currently output samples */
756 channels = s->sdl_channels;
757 nb_display_channels = channels;
759 int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
761 delay = audio_write_get_buf_size(s);
764 /* to be more precise, we take into account the time spent since
765 the last buffer computation */
766 if (audio_callback_time) {
767 time_diff = av_gettime() - audio_callback_time;
768 delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
771 delay += 2 * data_used;
772 if (delay < data_used)
775 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
776 if (s->show_audio == 1) {
778 for (i = 0; i < 1000; i += channels) {
779 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
780 int a = s->sample_array[idx];
781 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
782 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
783 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
785 if (h < score && (b ^ c) < 0) {
792 s->last_i_start = i_start;
794 i_start = s->last_i_start;
797 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
798 if (s->show_audio == 1) {
799 fill_rectangle(screen,
800 s->xleft, s->ytop, s->width, s->height,
803 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
805 /* total height for one channel */
806 h = s->height / nb_display_channels;
807 /* graph height / 2 */
809 for (ch = 0; ch < nb_display_channels; ch++) {
811 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
812 for (x = 0; x < s->width; x++) {
813 y = (s->sample_array[i] * h2) >> 15;
820 fill_rectangle(screen,
821 s->xleft + x, ys, 1, y,
824 if (i >= SAMPLE_ARRAY_SIZE)
825 i -= SAMPLE_ARRAY_SIZE;
829 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
831 for (ch = 1; ch < nb_display_channels; ch++) {
832 y = s->ytop + ch * h;
833 fill_rectangle(screen,
834 s->xleft, y, s->width, 1,
837 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
839 nb_display_channels= FFMIN(nb_display_channels, 2);
840 if (rdft_bits != s->rdft_bits) {
841 av_rdft_end(s->rdft);
842 av_free(s->rdft_data);
843 s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
844 s->rdft_bits = rdft_bits;
845 s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
849 for (ch = 0; ch < nb_display_channels; ch++) {
850 data[ch] = s->rdft_data + 2 * nb_freq * ch;
852 for (x = 0; x < 2 * nb_freq; x++) {
853 double w = (x-nb_freq) * (1.0 / nb_freq);
854 data[ch][x] = s->sample_array[i] * (1.0 - w * w);
856 if (i >= SAMPLE_ARRAY_SIZE)
857 i -= SAMPLE_ARRAY_SIZE;
859 av_rdft_calc(s->rdft, data[ch]);
861 // least efficient way to do this, we should of course directly access it but its more than fast enough
862 for (y = 0; y < s->height; y++) {
863 double w = 1 / sqrt(nb_freq);
864 int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
865 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
866 + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
869 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
871 fill_rectangle(screen,
872 s->xpos, s->height-y, 1, 1,
876 SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
878 if (s->xpos >= s->width)
883 static int video_open(VideoState *is)
885 int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
888 if (is_full_screen) flags |= SDL_FULLSCREEN;
889 else flags |= SDL_RESIZABLE;
891 if (is_full_screen && fs_screen_width) {
893 h = fs_screen_height;
894 } else if (!is_full_screen && screen_width) {
898 } else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
899 w = is->out_video_filter->inputs[0]->w;
900 h = is->out_video_filter->inputs[0]->h;
902 } else if (is->video_st && is->video_st->codec->width) {
903 w = is->video_st->codec->width;
904 h = is->video_st->codec->height;
910 if (screen && is->width == screen->w && screen->w == w
911 && is->height== screen->h && screen->h == h)
914 #if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
915 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
916 screen = SDL_SetVideoMode(w, h, 24, flags);
918 screen = SDL_SetVideoMode(w, h, 0, flags);
921 fprintf(stderr, "SDL: could not set video mode - exiting\n");
925 window_title = input_filename;
926 SDL_WM_SetCaption(window_title, window_title);
928 is->width = screen->w;
929 is->height = screen->h;
934 /* display the current picture, if any */
935 static void video_display(VideoState *is)
938 video_open(cur_stream);
939 if (is->audio_st && is->show_audio)
940 video_audio_display(is);
941 else if (is->video_st)
942 video_image_display(is);
945 static int refresh_thread(void *opaque)
947 VideoState *is= opaque;
948 while (!is->abort_request) {
950 event.type = FF_REFRESH_EVENT;
951 event.user.data1 = opaque;
954 SDL_PushEvent(&event);
956 av_usleep(is->audio_st && is->show_audio ? rdftspeed * 1000 : 5000); // FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
961 /* get the current audio clock value */
962 static double get_audio_clock(VideoState *is)
965 int hw_buf_size, bytes_per_sec;
966 pts = is->audio_clock;
967 hw_buf_size = audio_write_get_buf_size(is);
970 bytes_per_sec = is->audio_st->codec->sample_rate * is->sdl_channels *
971 av_get_bytes_per_sample(is->sdl_sample_fmt);
974 pts -= (double)hw_buf_size / bytes_per_sec;
978 /* get the current video clock value */
979 static double get_video_clock(VideoState *is)
982 return is->video_current_pts;
984 return is->video_current_pts_drift + av_gettime() / 1000000.0;
988 /* get the current external clock value */
989 static double get_external_clock(VideoState *is)
993 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
996 /* get the current master clock value */
997 static double get_master_clock(VideoState *is)
1001 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1003 val = get_video_clock(is);
1005 val = get_audio_clock(is);
1006 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1008 val = get_audio_clock(is);
1010 val = get_video_clock(is);
1012 val = get_external_clock(is);
1017 /* seek in the stream */
1018 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1020 if (!is->seek_req) {
1023 is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1025 is->seek_flags |= AVSEEK_FLAG_BYTE;
1030 /* pause or resume the video */
1031 static void stream_pause(VideoState *is)
1034 is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1035 if (is->read_pause_return != AVERROR(ENOSYS)) {
1036 is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1038 is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1040 is->paused = !is->paused;
1043 static double compute_target_time(double frame_current_pts, VideoState *is)
1045 double delay, sync_threshold, diff;
1047 /* compute nominal delay */
1048 delay = frame_current_pts - is->frame_last_pts;
1049 if (delay <= 0 || delay >= 10.0) {
1050 /* if incorrect delay, use previous one */
1051 delay = is->frame_last_delay;
1053 is->frame_last_delay = delay;
1055 is->frame_last_pts = frame_current_pts;
1057 /* update delay to follow master synchronisation source */
1058 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1059 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1060 /* if video is slave, we try to correct big delays by
1061 duplicating or deleting a frame */
1062 diff = get_video_clock(is) - get_master_clock(is);
1064 /* skip or repeat frame. We take into account the
1065 delay to compute the threshold. I still don't know
1066 if it is the best guess */
1067 sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1068 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1069 if (diff <= -sync_threshold)
1071 else if (diff >= sync_threshold)
1075 is->frame_timer += delay;
1077 av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1078 delay, frame_current_pts, -diff);
1080 return is->frame_timer;
1083 /* called to display each frame */
1084 static void video_refresh_timer(void *opaque)
1086 VideoState *is = opaque;
1089 SubPicture *sp, *sp2;
1093 if (is->pictq_size == 0) {
1094 // nothing to do, no picture to display in the que
1096 double time = av_gettime() / 1000000.0;
1098 /* dequeue the picture */
1099 vp = &is->pictq[is->pictq_rindex];
1101 if (time < vp->target_clock)
1103 /* update current video pts */
1104 is->video_current_pts = vp->pts;
1105 is->video_current_pts_drift = is->video_current_pts - time;
1106 is->video_current_pos = vp->pos;
1107 if (is->pictq_size > 1) {
1108 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1109 assert(nextvp->target_clock >= vp->target_clock);
1110 next_target= nextvp->target_clock;
1112 next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
1114 if (framedrop && time > next_target) {
1115 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1116 if (is->pictq_size > 1 || time > next_target + 0.5) {
1117 /* update queue size and signal for next picture */
1118 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1119 is->pictq_rindex = 0;
1121 SDL_LockMutex(is->pictq_mutex);
1123 SDL_CondSignal(is->pictq_cond);
1124 SDL_UnlockMutex(is->pictq_mutex);
1129 if (is->subtitle_st) {
1130 if (is->subtitle_stream_changed) {
1131 SDL_LockMutex(is->subpq_mutex);
1133 while (is->subpq_size) {
1134 free_subpicture(&is->subpq[is->subpq_rindex]);
1136 /* update queue size and signal for next picture */
1137 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1138 is->subpq_rindex = 0;
1142 is->subtitle_stream_changed = 0;
1144 SDL_CondSignal(is->subpq_cond);
1145 SDL_UnlockMutex(is->subpq_mutex);
1147 if (is->subpq_size > 0) {
1148 sp = &is->subpq[is->subpq_rindex];
1150 if (is->subpq_size > 1)
1151 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1155 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1156 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1158 free_subpicture(sp);
1160 /* update queue size and signal for next picture */
1161 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1162 is->subpq_rindex = 0;
1164 SDL_LockMutex(is->subpq_mutex);
1166 SDL_CondSignal(is->subpq_cond);
1167 SDL_UnlockMutex(is->subpq_mutex);
1173 /* display picture */
1174 if (!display_disable)
1177 /* update queue size and signal for next picture */
1178 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1179 is->pictq_rindex = 0;
1181 SDL_LockMutex(is->pictq_mutex);
1183 SDL_CondSignal(is->pictq_cond);
1184 SDL_UnlockMutex(is->pictq_mutex);
1186 } else if (is->audio_st) {
1187 /* draw the next audio frame */
1189 /* if only audio stream, then display the audio bars (better
1190 than nothing, just to test the implementation */
1192 /* display picture */
1193 if (!display_disable)
1197 static int64_t last_time;
1199 int aqsize, vqsize, sqsize;
1202 cur_time = av_gettime();
1203 if (!last_time || (cur_time - last_time) >= 30000) {
1208 aqsize = is->audioq.size;
1210 vqsize = is->videoq.size;
1211 if (is->subtitle_st)
1212 sqsize = is->subtitleq.size;
1214 if (is->audio_st && is->video_st)
1215 av_diff = get_audio_clock(is) - get_video_clock(is);
1216 printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
1217 get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
1218 vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1220 last_time = cur_time;
1225 static void stream_close(VideoState *is)
1229 /* XXX: use a special url_shutdown call to abort parse cleanly */
1230 is->abort_request = 1;
1231 SDL_WaitThread(is->parse_tid, NULL);
1232 SDL_WaitThread(is->refresh_tid, NULL);
1234 /* free all pictures */
1235 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1238 avfilter_unref_bufferp(&vp->picref);
1241 SDL_FreeYUVOverlay(vp->bmp);
1245 SDL_DestroyMutex(is->pictq_mutex);
1246 SDL_DestroyCond(is->pictq_cond);
1247 SDL_DestroyMutex(is->subpq_mutex);
1248 SDL_DestroyCond(is->subpq_cond);
1249 #if !CONFIG_AVFILTER
1250 if (is->img_convert_ctx)
1251 sws_freeContext(is->img_convert_ctx);
1256 static void do_exit(void)
1259 stream_close(cur_stream);
1266 avformat_network_deinit();
1270 av_log(NULL, AV_LOG_QUIET, "");
1274 /* allocate a picture (needs to do that in main thread to avoid
1275 potential locking problems */
1276 static void alloc_picture(void *opaque)
1278 VideoState *is = opaque;
1281 vp = &is->pictq[is->pictq_windex];
1284 SDL_FreeYUVOverlay(vp->bmp);
1287 avfilter_unref_bufferp(&vp->picref);
1289 vp->width = is->out_video_filter->inputs[0]->w;
1290 vp->height = is->out_video_filter->inputs[0]->h;
1291 vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1293 vp->width = is->video_st->codec->width;
1294 vp->height = is->video_st->codec->height;
1295 vp->pix_fmt = is->video_st->codec->pix_fmt;
1298 vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1301 if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1302 /* SDL allocates a buffer smaller than requested if the video
1303 * overlay hardware is unable to support the requested size. */
1304 fprintf(stderr, "Error: the video system does not support an image\n"
1305 "size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
1306 "to reduce the image size.\n", vp->width, vp->height );
1310 SDL_LockMutex(is->pictq_mutex);
1312 SDL_CondSignal(is->pictq_cond);
1313 SDL_UnlockMutex(is->pictq_mutex);
1318 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1320 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1326 int dst_pix_fmt = PIX_FMT_YUV420P;
1328 /* wait until we have space to put a new picture */
1329 SDL_LockMutex(is->pictq_mutex);
1331 if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1332 is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1334 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1335 !is->videoq.abort_request) {
1336 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1338 SDL_UnlockMutex(is->pictq_mutex);
1340 if (is->videoq.abort_request)
1343 vp = &is->pictq[is->pictq_windex];
1345 /* alloc or resize hardware picture buffer */
1346 if (!vp->bmp || vp->reallocate ||
1348 vp->width != is->out_video_filter->inputs[0]->w ||
1349 vp->height != is->out_video_filter->inputs[0]->h) {
1351 vp->width != is->video_st->codec->width ||
1352 vp->height != is->video_st->codec->height) {
1359 /* the allocation must be done in the main thread to avoid
1361 event.type = FF_ALLOC_EVENT;
1362 event.user.data1 = is;
1363 SDL_PushEvent(&event);
1365 /* wait until the picture is allocated */
1366 SDL_LockMutex(is->pictq_mutex);
1367 while (!vp->allocated && !is->videoq.abort_request) {
1368 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1370 SDL_UnlockMutex(is->pictq_mutex);
1372 if (is->videoq.abort_request)
1376 /* if the frame is not skipped, then display it */
1378 AVPicture pict = { { 0 } };
1380 avfilter_unref_bufferp(&vp->picref);
1381 vp->picref = src_frame->opaque;
1384 /* get a pointer on the bitmap */
1385 SDL_LockYUVOverlay (vp->bmp);
1387 pict.data[0] = vp->bmp->pixels[0];
1388 pict.data[1] = vp->bmp->pixels[2];
1389 pict.data[2] = vp->bmp->pixels[1];
1391 pict.linesize[0] = vp->bmp->pitches[0];
1392 pict.linesize[1] = vp->bmp->pitches[2];
1393 pict.linesize[2] = vp->bmp->pitches[1];
1396 pict_src.data[0] = src_frame->data[0];
1397 pict_src.data[1] = src_frame->data[1];
1398 pict_src.data[2] = src_frame->data[2];
1400 pict_src.linesize[0] = src_frame->linesize[0];
1401 pict_src.linesize[1] = src_frame->linesize[1];
1402 pict_src.linesize[2] = src_frame->linesize[2];
1404 // FIXME use direct rendering
1405 av_picture_copy(&pict, &pict_src,
1406 vp->pix_fmt, vp->width, vp->height);
1408 sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1409 is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1410 vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1411 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1412 if (is->img_convert_ctx == NULL) {
1413 fprintf(stderr, "Cannot initialize the conversion context\n");
1416 sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1417 0, vp->height, pict.data, pict.linesize);
1419 /* update the bitmap content */
1420 SDL_UnlockYUVOverlay(vp->bmp);
1425 /* now we can update the picture count */
1426 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1427 is->pictq_windex = 0;
1428 SDL_LockMutex(is->pictq_mutex);
1429 vp->target_clock = compute_target_time(vp->pts, is);
1432 SDL_UnlockMutex(is->pictq_mutex);
1438 * compute the exact PTS for the picture if it is omitted in the stream
1439 * @param pts1 the dts of the pkt / pts of the frame
1441 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1443 double frame_delay, pts;
1448 /* update video clock with pts, if present */
1449 is->video_clock = pts;
1451 pts = is->video_clock;
1453 /* update video clock for next frame */
1454 frame_delay = av_q2d(is->video_st->codec->time_base);
1455 /* for MPEG2, the frame can be repeated, so we update the
1456 clock accordingly */
1457 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1458 is->video_clock += frame_delay;
1460 return queue_picture(is, src_frame, pts, pos);
1463 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1467 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1470 if (pkt->data == flush_pkt.data) {
1471 avcodec_flush_buffers(is->video_st->codec);
1473 SDL_LockMutex(is->pictq_mutex);
1474 // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1475 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1476 is->pictq[i].target_clock= 0;
1478 while (is->pictq_size && !is->videoq.abort_request) {
1479 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1481 is->video_current_pos = -1;
1482 SDL_UnlockMutex(is->pictq_mutex);
1484 init_pts_correction(&is->pts_ctx);
1485 is->frame_last_pts = AV_NOPTS_VALUE;
1486 is->frame_last_delay = 0;
1487 is->frame_timer = (double)av_gettime() / 1000000.0;
1488 is->skip_frames = 1;
1489 is->skip_frames_index = 0;
1493 avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1496 if (decoder_reorder_pts == -1) {
1497 *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1498 } else if (decoder_reorder_pts) {
1499 *pts = frame->pkt_pts;
1501 *pts = frame->pkt_dts;
1504 if (*pts == AV_NOPTS_VALUE) {
1508 is->skip_frames_index += 1;
1509 if (is->skip_frames_index >= is->skip_frames) {
1510 is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1519 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1521 char sws_flags_str[128];
1522 char buffersrc_args[256];
1524 AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1525 AVCodecContext *codec = is->video_st->codec;
1527 snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1528 graph->scale_sws_opts = av_strdup(sws_flags_str);
1530 snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1531 codec->width, codec->height, codec->pix_fmt,
1532 is->video_st->time_base.num, is->video_st->time_base.den,
1533 codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1536 if ((ret = avfilter_graph_create_filter(&filt_src,
1537 avfilter_get_by_name("buffer"),
1538 "src", buffersrc_args, NULL,
1541 if ((ret = avfilter_graph_create_filter(&filt_out,
1542 avfilter_get_by_name("buffersink"),
1543 "out", NULL, NULL, graph)) < 0)
1546 if ((ret = avfilter_graph_create_filter(&filt_format,
1547 avfilter_get_by_name("format"),
1548 "format", "yuv420p", NULL, graph)) < 0)
1550 if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1555 AVFilterInOut *outputs = avfilter_inout_alloc();
1556 AVFilterInOut *inputs = avfilter_inout_alloc();
1558 outputs->name = av_strdup("in");
1559 outputs->filter_ctx = filt_src;
1560 outputs->pad_idx = 0;
1561 outputs->next = NULL;
1563 inputs->name = av_strdup("out");
1564 inputs->filter_ctx = filt_format;
1565 inputs->pad_idx = 0;
1566 inputs->next = NULL;
1568 if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1571 if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1575 if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1578 is->in_video_filter = filt_src;
1579 is->out_video_filter = filt_out;
1581 if (codec->codec->capabilities & CODEC_CAP_DR1) {
1583 codec->get_buffer = codec_get_buffer;
1584 codec->release_buffer = codec_release_buffer;
1585 codec->opaque = &is->buffer_pool;
1591 #endif /* CONFIG_AVFILTER */
1593 static int video_thread(void *arg)
1595 AVPacket pkt = { 0 };
1596 VideoState *is = arg;
1597 AVFrame *frame = avcodec_alloc_frame();
1603 AVFilterGraph *graph = avfilter_graph_alloc();
1604 AVFilterContext *filt_out = NULL, *filt_in = NULL;
1606 int last_w = is->video_st->codec->width;
1607 int last_h = is->video_st->codec->height;
1609 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1611 filt_in = is->in_video_filter;
1612 filt_out = is->out_video_filter;
1617 AVFilterBufferRef *picref;
1620 while (is->paused && !is->videoq.abort_request)
1623 av_free_packet(&pkt);
1625 ret = get_video_frame(is, frame, &pts_int, &pkt);
1633 if ( last_w != is->video_st->codec->width
1634 || last_h != is->video_st->codec->height) {
1635 av_dlog(NULL, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1636 is->video_st->codec->width, is->video_st->codec->height);
1637 avfilter_graph_free(&graph);
1638 graph = avfilter_graph_alloc();
1639 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1641 filt_in = is->in_video_filter;
1642 filt_out = is->out_video_filter;
1643 last_w = is->video_st->codec->width;
1644 last_h = is->video_st->codec->height;
1647 frame->pts = pts_int;
1649 FrameBuffer *buf = frame->opaque;
1650 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1651 frame->data, frame->linesize,
1652 AV_PERM_READ | AV_PERM_PRESERVE,
1653 frame->width, frame->height,
1656 avfilter_copy_frame_props(fb, frame);
1657 fb->buf->priv = buf;
1658 fb->buf->free = filter_release_buffer;
1661 av_buffersrc_buffer(filt_in, fb);
1664 av_buffersrc_write_frame(filt_in, frame);
1667 ret = av_buffersink_read(filt_out, &picref);
1673 avfilter_copy_buf_props(frame, picref);
1675 pts_int = picref->pts;
1676 tb = filt_out->inputs[0]->time_base;
1678 frame->opaque = picref;
1680 if (av_cmp_q(tb, is->video_st->time_base)) {
1681 av_unused int64_t pts1 = pts_int;
1682 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1683 av_dlog(NULL, "video_thread(): "
1684 "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1685 tb.num, tb.den, pts1,
1686 is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1688 pts = pts_int * av_q2d(is->video_st->time_base);
1689 ret = output_picture2(is, frame, pts, pos);
1692 pts = pts_int * av_q2d(is->video_st->time_base);
1693 ret = output_picture2(is, frame, pts, pkt.pos);
1701 stream_pause(cur_stream);
1705 av_freep(&vfilters);
1706 avfilter_graph_free(&graph);
1708 av_free_packet(&pkt);
1713 static int subtitle_thread(void *arg)
1715 VideoState *is = arg;
1717 AVPacket pkt1, *pkt = &pkt1;
1721 int r, g, b, y, u, v, a;
1724 while (is->paused && !is->subtitleq.abort_request) {
1727 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1730 if (pkt->data == flush_pkt.data) {
1731 avcodec_flush_buffers(is->subtitle_st->codec);
1734 SDL_LockMutex(is->subpq_mutex);
1735 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1736 !is->subtitleq.abort_request) {
1737 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1739 SDL_UnlockMutex(is->subpq_mutex);
1741 if (is->subtitleq.abort_request)
1744 sp = &is->subpq[is->subpq_windex];
1746 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1747 this packet, if any */
1749 if (pkt->pts != AV_NOPTS_VALUE)
1750 pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1752 avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1753 &got_subtitle, pkt);
1755 if (got_subtitle && sp->sub.format == 0) {
1758 for (i = 0; i < sp->sub.num_rects; i++)
1760 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1762 RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1763 y = RGB_TO_Y_CCIR(r, g, b);
1764 u = RGB_TO_U_CCIR(r, g, b, 0);
1765 v = RGB_TO_V_CCIR(r, g, b, 0);
1766 YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1770 /* now we can update the picture count */
1771 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1772 is->subpq_windex = 0;
1773 SDL_LockMutex(is->subpq_mutex);
1775 SDL_UnlockMutex(is->subpq_mutex);
1777 av_free_packet(pkt);
1782 /* copy samples for viewing in editor window */
1783 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1787 size = samples_size / sizeof(short);
1789 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1792 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1794 is->sample_array_index += len;
1795 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1796 is->sample_array_index = 0;
1801 /* return the new audio buffer size (samples can be added or deleted
1802 to get better sync if video or external master clock) */
1803 static int synchronize_audio(VideoState *is, short *samples,
1804 int samples_size1, double pts)
1806 int n, samples_size;
1809 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1810 samples_size = samples_size1;
1812 /* if not master, then we try to remove or add samples to correct the clock */
1813 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1814 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1815 double diff, avg_diff;
1816 int wanted_size, min_size, max_size, nb_samples;
1818 ref_clock = get_master_clock(is);
1819 diff = get_audio_clock(is) - ref_clock;
1821 if (diff < AV_NOSYNC_THRESHOLD) {
1822 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1823 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1824 /* not enough measures to have a correct estimate */
1825 is->audio_diff_avg_count++;
1827 /* estimate the A-V difference */
1828 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1830 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1831 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1832 nb_samples = samples_size / n;
1834 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1835 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1836 if (wanted_size < min_size)
1837 wanted_size = min_size;
1838 else if (wanted_size > max_size)
1839 wanted_size = max_size;
1841 /* add or remove samples to correction the synchro */
1842 if (wanted_size < samples_size) {
1843 /* remove samples */
1844 samples_size = wanted_size;
1845 } else if (wanted_size > samples_size) {
1846 uint8_t *samples_end, *q;
1850 nb = (samples_size - wanted_size);
1851 samples_end = (uint8_t *)samples + samples_size - n;
1852 q = samples_end + n;
1854 memcpy(q, samples_end, n);
1858 samples_size = wanted_size;
1861 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1862 diff, avg_diff, samples_size - samples_size1,
1863 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1866 /* too big difference : may be initial PTS errors, so
1868 is->audio_diff_avg_count = 0;
1869 is->audio_diff_cum = 0;
1873 return samples_size;
1876 /* decode one audio frame and returns its uncompressed size */
1877 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1879 AVPacket *pkt_temp = &is->audio_pkt_temp;
1880 AVPacket *pkt = &is->audio_pkt;
1881 AVCodecContext *dec = is->audio_st->codec;
1882 int n, len1, data_size, got_frame;
1885 int flush_complete = 0;
1888 /* NOTE: the audio packet can contain several frames */
1889 while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1890 int resample_changed, audio_resample;
1893 if (!(is->frame = avcodec_alloc_frame()))
1894 return AVERROR(ENOMEM);
1896 avcodec_get_frame_defaults(is->frame);
1901 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1903 /* if error, we skip the frame */
1908 pkt_temp->data += len1;
1909 pkt_temp->size -= len1;
1912 /* stop sending empty packets if the decoder is finished */
1913 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1917 data_size = av_samples_get_buffer_size(NULL, dec->channels,
1918 is->frame->nb_samples,
1919 dec->sample_fmt, 1);
1921 audio_resample = dec->sample_fmt != is->sdl_sample_fmt ||
1922 dec->channel_layout != is->sdl_channel_layout;
1924 resample_changed = dec->sample_fmt != is->resample_sample_fmt ||
1925 dec->channel_layout != is->resample_channel_layout;
1927 if ((!is->avr && audio_resample) || resample_changed) {
1930 avresample_close(is->avr);
1931 else if (audio_resample) {
1932 is->avr = avresample_alloc_context();
1934 fprintf(stderr, "error allocating AVAudioResampleContext\n");
1938 if (audio_resample) {
1939 av_opt_set_int(is->avr, "in_channel_layout", dec->channel_layout, 0);
1940 av_opt_set_int(is->avr, "in_sample_fmt", dec->sample_fmt, 0);
1941 av_opt_set_int(is->avr, "in_sample_rate", dec->sample_rate, 0);
1942 av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout, 0);
1943 av_opt_set_int(is->avr, "out_sample_fmt", is->sdl_sample_fmt, 0);
1944 av_opt_set_int(is->avr, "out_sample_rate", dec->sample_rate, 0);
1946 if ((ret = avresample_open(is->avr)) < 0) {
1947 fprintf(stderr, "error initializing libavresample\n");
1951 is->resample_sample_fmt = dec->sample_fmt;
1952 is->resample_channel_layout = dec->channel_layout;
1955 if (audio_resample) {
1957 int out_samples, out_size, out_linesize;
1958 int osize = av_get_bytes_per_sample(is->sdl_sample_fmt);
1959 int nb_samples = is->frame->nb_samples;
1961 out_size = av_samples_get_buffer_size(&out_linesize,
1964 is->sdl_sample_fmt, 0);
1965 tmp_out = av_realloc(is->audio_buf1, out_size);
1967 return AVERROR(ENOMEM);
1968 is->audio_buf1 = tmp_out;
1970 out_samples = avresample_convert(is->avr,
1971 (void **)&is->audio_buf1,
1972 out_linesize, nb_samples,
1973 (void **)is->frame->data,
1974 is->frame->linesize[0],
1975 is->frame->nb_samples);
1976 if (out_samples < 0) {
1977 fprintf(stderr, "avresample_convert() failed\n");
1980 is->audio_buf = is->audio_buf1;
1981 data_size = out_samples * osize * is->sdl_channels;
1983 is->audio_buf = is->frame->data[0];
1986 /* if no pts, then compute it */
1987 pts = is->audio_clock;
1989 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1990 is->audio_clock += (double)data_size /
1991 (double)(n * dec->sample_rate);
1994 static double last_clock;
1995 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1996 is->audio_clock - last_clock,
1997 is->audio_clock, pts);
1998 last_clock = is->audio_clock;
2004 /* free the current packet */
2006 av_free_packet(pkt);
2007 memset(pkt_temp, 0, sizeof(*pkt_temp));
2009 if (is->paused || is->audioq.abort_request) {
2013 /* read next packet */
2014 if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2017 if (pkt->data == flush_pkt.data) {
2018 avcodec_flush_buffers(dec);
2024 /* if update the audio clock with the pts */
2025 if (pkt->pts != AV_NOPTS_VALUE) {
2026 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2031 /* prepare a new audio buffer */
2032 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2034 VideoState *is = opaque;
2035 int audio_size, len1;
2038 audio_callback_time = av_gettime();
2041 if (is->audio_buf_index >= is->audio_buf_size) {
2042 audio_size = audio_decode_frame(is, &pts);
2043 if (audio_size < 0) {
2044 /* if error, just output silence */
2045 is->audio_buf = is->silence_buf;
2046 is->audio_buf_size = sizeof(is->silence_buf);
2049 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2050 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2052 is->audio_buf_size = audio_size;
2054 is->audio_buf_index = 0;
2056 len1 = is->audio_buf_size - is->audio_buf_index;
2059 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2062 is->audio_buf_index += len1;
2066 /* open a given stream. Return 0 if OK */
2067 static int stream_component_open(VideoState *is, int stream_index)
2069 AVFormatContext *ic = is->ic;
2070 AVCodecContext *avctx;
2072 SDL_AudioSpec wanted_spec, spec;
2074 AVDictionaryEntry *t = NULL;
2076 if (stream_index < 0 || stream_index >= ic->nb_streams)
2078 avctx = ic->streams[stream_index]->codec;
2080 opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
2082 codec = avcodec_find_decoder(avctx->codec_id);
2083 avctx->debug_mv = debug_mv;
2084 avctx->debug = debug;
2085 avctx->workaround_bugs = workaround_bugs;
2086 avctx->idct_algo = idct;
2087 avctx->skip_frame = skip_frame;
2088 avctx->skip_idct = skip_idct;
2089 avctx->skip_loop_filter = skip_loop_filter;
2090 avctx->error_concealment = error_concealment;
2092 if (fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2094 if (!av_dict_get(opts, "threads", NULL, 0))
2095 av_dict_set(&opts, "threads", "auto", 0);
2097 avcodec_open2(avctx, codec, &opts) < 0)
2099 if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2100 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2101 return AVERROR_OPTION_NOT_FOUND;
2104 /* prepare audio output */
2105 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2106 wanted_spec.freq = avctx->sample_rate;
2107 wanted_spec.format = AUDIO_S16SYS;
2109 if (!avctx->channel_layout)
2110 avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
2111 if (!avctx->channel_layout) {
2112 fprintf(stderr, "unable to guess channel layout\n");
2115 if (avctx->channels == 1)
2116 is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
2118 is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
2119 is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
2121 wanted_spec.channels = is->sdl_channels;
2122 wanted_spec.silence = 0;
2123 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2124 wanted_spec.callback = sdl_audio_callback;
2125 wanted_spec.userdata = is;
2126 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2127 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2130 is->audio_hw_buf_size = spec.size;
2131 is->sdl_sample_fmt = AV_SAMPLE_FMT_S16;
2132 is->resample_sample_fmt = is->sdl_sample_fmt;
2133 is->resample_channel_layout = is->sdl_channel_layout;
2136 ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2137 switch (avctx->codec_type) {
2138 case AVMEDIA_TYPE_AUDIO:
2139 is->audio_stream = stream_index;
2140 is->audio_st = ic->streams[stream_index];
2141 is->audio_buf_size = 0;
2142 is->audio_buf_index = 0;
2144 /* init averaging filter */
2145 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2146 is->audio_diff_avg_count = 0;
2147 /* since we do not have a precise anough audio fifo fullness,
2148 we correct audio sync only if larger than this threshold */
2149 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2151 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2152 packet_queue_init(&is->audioq);
2155 case AVMEDIA_TYPE_VIDEO:
2156 is->video_stream = stream_index;
2157 is->video_st = ic->streams[stream_index];
2159 packet_queue_init(&is->videoq);
2160 is->video_tid = SDL_CreateThread(video_thread, is);
2162 case AVMEDIA_TYPE_SUBTITLE:
2163 is->subtitle_stream = stream_index;
2164 is->subtitle_st = ic->streams[stream_index];
2165 packet_queue_init(&is->subtitleq);
2167 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2175 static void stream_component_close(VideoState *is, int stream_index)
2177 AVFormatContext *ic = is->ic;
2178 AVCodecContext *avctx;
2180 if (stream_index < 0 || stream_index >= ic->nb_streams)
2182 avctx = ic->streams[stream_index]->codec;
2184 switch (avctx->codec_type) {
2185 case AVMEDIA_TYPE_AUDIO:
2186 packet_queue_abort(&is->audioq);
2190 packet_queue_end(&is->audioq);
2191 av_free_packet(&is->audio_pkt);
2193 avresample_free(&is->avr);
2194 av_freep(&is->audio_buf1);
2195 is->audio_buf = NULL;
2196 av_freep(&is->frame);
2199 av_rdft_end(is->rdft);
2200 av_freep(&is->rdft_data);
2205 case AVMEDIA_TYPE_VIDEO:
2206 packet_queue_abort(&is->videoq);
2208 /* note: we also signal this mutex to make sure we deblock the
2209 video thread in all cases */
2210 SDL_LockMutex(is->pictq_mutex);
2211 SDL_CondSignal(is->pictq_cond);
2212 SDL_UnlockMutex(is->pictq_mutex);
2214 SDL_WaitThread(is->video_tid, NULL);
2216 packet_queue_end(&is->videoq);
2218 case AVMEDIA_TYPE_SUBTITLE:
2219 packet_queue_abort(&is->subtitleq);
2221 /* note: we also signal this mutex to make sure we deblock the
2222 video thread in all cases */
2223 SDL_LockMutex(is->subpq_mutex);
2224 is->subtitle_stream_changed = 1;
2226 SDL_CondSignal(is->subpq_cond);
2227 SDL_UnlockMutex(is->subpq_mutex);
2229 SDL_WaitThread(is->subtitle_tid, NULL);
2231 packet_queue_end(&is->subtitleq);
2237 ic->streams[stream_index]->discard = AVDISCARD_ALL;
2238 avcodec_close(avctx);
2240 free_buffer_pool(&is->buffer_pool);
2242 switch (avctx->codec_type) {
2243 case AVMEDIA_TYPE_AUDIO:
2244 is->audio_st = NULL;
2245 is->audio_stream = -1;
2247 case AVMEDIA_TYPE_VIDEO:
2248 is->video_st = NULL;
2249 is->video_stream = -1;
2251 case AVMEDIA_TYPE_SUBTITLE:
2252 is->subtitle_st = NULL;
2253 is->subtitle_stream = -1;
2260 /* since we have only one decoding thread, we can use a global
2261 variable instead of a thread local variable */
2262 static VideoState *global_video_state;
2264 static int decode_interrupt_cb(void *ctx)
2266 return global_video_state && global_video_state->abort_request;
2269 /* this thread gets the stream from the disk or the network */
2270 static int decode_thread(void *arg)
2272 VideoState *is = arg;
2273 AVFormatContext *ic = NULL;
2275 int st_index[AVMEDIA_TYPE_NB];
2276 AVPacket pkt1, *pkt = &pkt1;
2278 int pkt_in_play_range = 0;
2279 AVDictionaryEntry *t;
2280 AVDictionary **opts;
2281 int orig_nb_streams;
2283 memset(st_index, -1, sizeof(st_index));
2284 is->video_stream = -1;
2285 is->audio_stream = -1;
2286 is->subtitle_stream = -1;
2288 global_video_state = is;
2290 ic = avformat_alloc_context();
2291 ic->interrupt_callback.callback = decode_interrupt_cb;
2292 err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2294 print_error(is->filename, err);
2298 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2299 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2300 ret = AVERROR_OPTION_NOT_FOUND;
2306 ic->flags |= AVFMT_FLAG_GENPTS;
2308 opts = setup_find_stream_info_opts(ic, codec_opts);
2309 orig_nb_streams = ic->nb_streams;
2311 err = avformat_find_stream_info(ic, opts);
2313 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2317 for (i = 0; i < orig_nb_streams; i++)
2318 av_dict_free(&opts[i]);
2322 ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2324 if (seek_by_bytes < 0)
2325 seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2327 /* if seeking requested, we execute it */
2328 if (start_time != AV_NOPTS_VALUE) {
2331 timestamp = start_time;
2332 /* add the stream start time */
2333 if (ic->start_time != AV_NOPTS_VALUE)
2334 timestamp += ic->start_time;
2335 ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2337 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2338 is->filename, (double)timestamp / AV_TIME_BASE);
2342 for (i = 0; i < ic->nb_streams; i++)
2343 ic->streams[i]->discard = AVDISCARD_ALL;
2345 st_index[AVMEDIA_TYPE_VIDEO] =
2346 av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2347 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2349 st_index[AVMEDIA_TYPE_AUDIO] =
2350 av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2351 wanted_stream[AVMEDIA_TYPE_AUDIO],
2352 st_index[AVMEDIA_TYPE_VIDEO],
2355 st_index[AVMEDIA_TYPE_SUBTITLE] =
2356 av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2357 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2358 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2359 st_index[AVMEDIA_TYPE_AUDIO] :
2360 st_index[AVMEDIA_TYPE_VIDEO]),
2363 av_dump_format(ic, 0, is->filename, 0);
2366 /* open the streams */
2367 if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2368 stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2372 if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2373 ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2375 is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2377 if (!display_disable)
2381 if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2382 stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2385 if (is->video_stream < 0 && is->audio_stream < 0) {
2386 fprintf(stderr, "%s: could not open codecs\n", is->filename);
2392 if (is->abort_request)
2394 if (is->paused != is->last_paused) {
2395 is->last_paused = is->paused;
2397 is->read_pause_return = av_read_pause(ic);
2401 #if CONFIG_RTSP_DEMUXER
2402 if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2403 /* wait 10 ms to avoid trying to get another packet */
2410 int64_t seek_target = is->seek_pos;
2411 int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2412 int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2413 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2414 // of the seek_pos/seek_rel variables
2416 ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2418 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2420 if (is->audio_stream >= 0) {
2421 packet_queue_flush(&is->audioq);
2422 packet_queue_put(&is->audioq, &flush_pkt);
2424 if (is->subtitle_stream >= 0) {
2425 packet_queue_flush(&is->subtitleq);
2426 packet_queue_put(&is->subtitleq, &flush_pkt);
2428 if (is->video_stream >= 0) {
2429 packet_queue_flush(&is->videoq);
2430 packet_queue_put(&is->videoq, &flush_pkt);
2437 /* if the queue are full, no need to read more */
2438 if (!infinite_buffer &&
2439 (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2440 || ( (is->audioq .size > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2441 && (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0)
2442 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
2448 if (is->video_stream >= 0) {
2449 av_init_packet(pkt);
2452 pkt->stream_index = is->video_stream;
2453 packet_queue_put(&is->videoq, pkt);
2455 if (is->audio_stream >= 0 &&
2456 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2457 av_init_packet(pkt);
2460 pkt->stream_index = is->audio_stream;
2461 packet_queue_put(&is->audioq, pkt);
2464 if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2465 if (loop != 1 && (!loop || --loop)) {
2466 stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2467 } else if (autoexit) {
2474 ret = av_read_frame(ic, pkt);
2476 if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2478 if (ic->pb && ic->pb->error)
2480 SDL_Delay(100); /* wait for user event */
2483 /* check if packet is in play range specified by user, then queue, otherwise discard */
2484 pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2485 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2486 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2487 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2488 <= ((double)duration / 1000000);
2489 if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2490 packet_queue_put(&is->audioq, pkt);
2491 } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2492 packet_queue_put(&is->videoq, pkt);
2493 } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2494 packet_queue_put(&is->subtitleq, pkt);
2496 av_free_packet(pkt);
2499 /* wait until the end */
2500 while (!is->abort_request) {
2506 /* disable interrupting */
2507 global_video_state = NULL;
2509 /* close each stream */
2510 if (is->audio_stream >= 0)
2511 stream_component_close(is, is->audio_stream);
2512 if (is->video_stream >= 0)
2513 stream_component_close(is, is->video_stream);
2514 if (is->subtitle_stream >= 0)
2515 stream_component_close(is, is->subtitle_stream);
2517 avformat_close_input(&is->ic);
2523 event.type = FF_QUIT_EVENT;
2524 event.user.data1 = is;
2525 SDL_PushEvent(&event);
2530 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2534 is = av_mallocz(sizeof(VideoState));
2537 av_strlcpy(is->filename, filename, sizeof(is->filename));
2538 is->iformat = iformat;
2542 /* start video display */
2543 is->pictq_mutex = SDL_CreateMutex();
2544 is->pictq_cond = SDL_CreateCond();
2546 is->subpq_mutex = SDL_CreateMutex();
2547 is->subpq_cond = SDL_CreateCond();
2549 is->av_sync_type = av_sync_type;
2550 is->parse_tid = SDL_CreateThread(decode_thread, is);
2551 if (!is->parse_tid) {
2558 static void stream_cycle_channel(VideoState *is, int codec_type)
2560 AVFormatContext *ic = is->ic;
2561 int start_index, stream_index;
2564 if (codec_type == AVMEDIA_TYPE_VIDEO)
2565 start_index = is->video_stream;
2566 else if (codec_type == AVMEDIA_TYPE_AUDIO)
2567 start_index = is->audio_stream;
2569 start_index = is->subtitle_stream;
2570 if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2572 stream_index = start_index;
2574 if (++stream_index >= is->ic->nb_streams)
2576 if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2583 if (stream_index == start_index)
2585 st = ic->streams[stream_index];
2586 if (st->codec->codec_type == codec_type) {
2587 /* check that parameters are OK */
2588 switch (codec_type) {
2589 case AVMEDIA_TYPE_AUDIO:
2590 if (st->codec->sample_rate != 0 &&
2591 st->codec->channels != 0)
2594 case AVMEDIA_TYPE_VIDEO:
2595 case AVMEDIA_TYPE_SUBTITLE:
2603 stream_component_close(is, start_index);
2604 stream_component_open(is, stream_index);
2608 static void toggle_full_screen(void)
2610 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2611 /* OS X needs to empty the picture_queue */
2613 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2614 cur_stream->pictq[i].reallocate = 1;
2616 is_full_screen = !is_full_screen;
2617 video_open(cur_stream);
2620 static void toggle_pause(void)
2623 stream_pause(cur_stream);
2627 static void step_to_next_frame(void)
2630 /* if the stream is paused unpause it, then step */
2631 if (cur_stream->paused)
2632 stream_pause(cur_stream);
2637 static void toggle_audio_display(void)
2640 int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2641 cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2642 fill_rectangle(screen,
2643 cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2645 SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2649 /* handle an event sent by the GUI */
2650 static void event_loop(void)
2653 double incr, pos, frac;
2657 SDL_WaitEvent(&event);
2658 switch (event.type) {
2660 if (exit_on_keydown) {
2664 switch (event.key.keysym.sym) {
2670 toggle_full_screen();
2676 case SDLK_s: // S: Step to next frame
2677 step_to_next_frame();
2681 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2685 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2689 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2692 toggle_audio_display();
2707 if (seek_by_bytes) {
2708 if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2709 pos = cur_stream->video_current_pos;
2710 } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2711 pos = cur_stream->audio_pkt.pos;
2713 pos = avio_tell(cur_stream->ic->pb);
2714 if (cur_stream->ic->bit_rate)
2715 incr *= cur_stream->ic->bit_rate / 8.0;
2719 stream_seek(cur_stream, pos, incr, 1);
2721 pos = get_master_clock(cur_stream);
2723 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2731 case SDL_MOUSEBUTTONDOWN:
2732 if (exit_on_mousedown) {
2736 case SDL_MOUSEMOTION:
2737 if (event.type == SDL_MOUSEBUTTONDOWN) {
2740 if (event.motion.state != SDL_PRESSED)
2745 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2746 uint64_t size = avio_size(cur_stream->ic->pb);
2747 stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2751 int tns, thh, tmm, tss;
2752 tns = cur_stream->ic->duration / 1000000LL;
2754 tmm = (tns % 3600) / 60;
2756 frac = x / cur_stream->width;
2759 mm = (ns % 3600) / 60;
2761 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2762 hh, mm, ss, thh, tmm, tss);
2763 ts = frac * cur_stream->ic->duration;
2764 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2765 ts += cur_stream->ic->start_time;
2766 stream_seek(cur_stream, ts, 0, 0);
2770 case SDL_VIDEORESIZE:
2772 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2773 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2774 screen_width = cur_stream->width = event.resize.w;
2775 screen_height = cur_stream->height = event.resize.h;
2782 case FF_ALLOC_EVENT:
2783 video_open(event.user.data1);
2784 alloc_picture(event.user.data1);
2786 case FF_REFRESH_EVENT:
2787 video_refresh_timer(event.user.data1);
2788 cur_stream->refresh = 0;
2796 static int opt_frame_size(const char *opt, const char *arg)
2798 av_log(NULL, AV_LOG_ERROR,
2799 "Option '%s' has been removed, use private format options instead\n", opt);
2800 return AVERROR(EINVAL);
2803 static int opt_width(const char *opt, const char *arg)
2805 screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2809 static int opt_height(const char *opt, const char *arg)
2811 screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2815 static int opt_format(const char *opt, const char *arg)
2817 file_iformat = av_find_input_format(arg);
2818 if (!file_iformat) {
2819 fprintf(stderr, "Unknown input format: %s\n", arg);
2820 return AVERROR(EINVAL);
2825 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2827 av_log(NULL, AV_LOG_ERROR,
2828 "Option '%s' has been removed, use private format options instead\n", opt);
2829 return AVERROR(EINVAL);
2832 static int opt_sync(const char *opt, const char *arg)
2834 if (!strcmp(arg, "audio"))
2835 av_sync_type = AV_SYNC_AUDIO_MASTER;
2836 else if (!strcmp(arg, "video"))
2837 av_sync_type = AV_SYNC_VIDEO_MASTER;
2838 else if (!strcmp(arg, "ext"))
2839 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2841 fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2847 static int opt_seek(const char *opt, const char *arg)
2849 start_time = parse_time_or_die(opt, arg, 1);
2853 static int opt_duration(const char *opt, const char *arg)
2855 duration = parse_time_or_die(opt, arg, 1);
2859 static int opt_debug(const char *opt, const char *arg)
2861 av_log_set_level(99);
2862 debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2866 static int opt_vismv(const char *opt, const char *arg)
2868 debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2872 static const OptionDef options[] = {
2873 #include "cmdutils_common_opts.h"
2874 { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2875 { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2876 { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2877 { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2878 { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2879 { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2880 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2881 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2882 { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2883 { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2884 { "t", HAS_ARG, { (void*)&opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
2885 { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2886 { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2887 { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2888 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2889 { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2890 { "debug", HAS_ARG | OPT_EXPERT, { (void*)opt_debug }, "print specific debug info", "" },
2891 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2892 { "vismv", HAS_ARG | OPT_EXPERT, { (void*)opt_vismv }, "visualize motion vectors", "" },
2893 { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2894 { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2895 { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2896 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2897 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2898 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2899 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo", "algo" },
2900 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options", "bit_mask" },
2901 { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2902 { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2903 { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2904 { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
2905 { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
2906 { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
2907 { "infbuf", OPT_BOOL | OPT_EXPERT, { (void*)&infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
2908 { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
2910 { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
2912 { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
2913 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
2914 { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2918 static void show_usage(void)
2920 printf("Simple media player\n");
2921 printf("usage: %s [options] input_file\n", program_name);
2925 static void show_help(void)
2927 av_log_set_callback(log_callback_help);
2929 show_help_options(options, "Main options:\n",
2931 show_help_options(options, "\nAdvanced options:\n",
2932 OPT_EXPERT, OPT_EXPERT);
2934 show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2935 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2936 #if !CONFIG_AVFILTER
2937 show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
2939 printf("\nWhile playing:\n"
2941 "f toggle full screen\n"
2943 "a cycle audio channel\n"
2944 "v cycle video channel\n"
2945 "t cycle subtitle channel\n"
2946 "w show audio waves\n"
2947 "s activate frame-step mode\n"
2948 "left/right seek backward/forward 10 seconds\n"
2949 "down/up seek backward/forward 1 minute\n"
2950 "mouse click seek to percentage in file corresponding to fraction of width\n"
2954 static void opt_input_file(void *optctx, const char *filename)
2956 if (input_filename) {
2957 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2958 filename, input_filename);
2961 if (!strcmp(filename, "-"))
2963 input_filename = filename;
2966 /* Called from the main */
2967 int main(int argc, char **argv)
2971 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2972 parse_loglevel(argc, argv, options);
2974 /* register all codecs, demux and protocols */
2975 avcodec_register_all();
2977 avdevice_register_all();
2980 avfilter_register_all();
2983 avformat_network_init();
2989 parse_options(NULL, argc, argv, options, opt_input_file);
2991 if (!input_filename) {
2993 fprintf(stderr, "An input file must be specified\n");
2994 fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2998 if (display_disable) {
3001 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3002 #if !defined(__MINGW32__) && !defined(__APPLE__)
3003 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3005 if (SDL_Init (flags)) {
3006 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3010 if (!display_disable) {
3011 #if HAVE_SDL_VIDEO_SIZE
3012 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3013 fs_screen_width = vi->current_w;
3014 fs_screen_height = vi->current_h;
3018 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3019 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3020 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3022 av_init_packet(&flush_pkt);
3023 flush_pkt.data = "FLUSH";
3025 cur_stream = stream_open(input_filename, file_iformat);