mirror of https://github.com/mpv-player/mpv
626 lines
22 KiB
C
626 lines
22 KiB
C
/*
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* video frame reading
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libavutil/mem.h>
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#include "core/mp_msg.h"
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#include "stream/stream.h"
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#include "demux.h"
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#include "stheader.h"
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#include "parse_es.h"
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#include "mpeg_hdr.h"
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/* sub_cc (closed captions)*/
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//#include "sub/sub_cc.h"
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/* biCompression constant */
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#define BI_RGB 0L
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static mp_mpeg_header_t picture;
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static int telecine=0;
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static float telecine_cnt=-2.5;
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typedef enum {
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VIDEO_MPEG12,
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VIDEO_MPEG4,
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VIDEO_H264,
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VIDEO_VC1,
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VIDEO_OTHER
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} video_codec_t;
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static video_codec_t find_video_codec(sh_video_t *sh_video)
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{
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demux_stream_t *d_video=sh_video->ds;
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int fmt = d_video->demuxer->file_format;
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if(
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(fmt == DEMUXER_TYPE_MPEG_ES) ||
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(fmt == DEMUXER_TYPE_MPEG_GXF) ||
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(fmt == DEMUXER_TYPE_MPEG_PES) ||
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(
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(fmt == DEMUXER_TYPE_MPEG_PS || fmt == DEMUXER_TYPE_MPEG_TS) &&
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((! sh_video->format) || (sh_video->format==0x10000001) || (sh_video->format==0x10000002))
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)
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)
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return VIDEO_MPEG12;
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else if((fmt == DEMUXER_TYPE_MPEG4_ES) ||
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((fmt == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000004)) ||
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((fmt == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000004))
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)
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return VIDEO_MPEG4;
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else if((fmt == DEMUXER_TYPE_H264_ES) ||
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((fmt == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000005)) ||
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((fmt == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000005))
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)
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return VIDEO_H264;
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else if((fmt == DEMUXER_TYPE_MPEG_PS || fmt == DEMUXER_TYPE_MPEG_TS) &&
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(sh_video->format==mmioFOURCC('W', 'V', 'C', '1')))
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return VIDEO_VC1;
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else if (fmt == DEMUXER_TYPE_ASF && sh_video->bih && sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' '))
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return VIDEO_MPEG12;
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else
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return VIDEO_OTHER;
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}
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int video_read_properties(sh_video_t *sh_video){
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demux_stream_t *d_video=sh_video->ds;
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video_codec_t video_codec = find_video_codec(sh_video);
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// Determine image properties:
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switch(video_codec){
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case VIDEO_OTHER: {
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if((d_video->demuxer->file_format == DEMUXER_TYPE_ASF) || (d_video->demuxer->file_format == DEMUXER_TYPE_AVI)) {
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// display info:
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// in case no strf chunk has been seen in avi, we have no bitmap header
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if(!sh_video->bih) return 0;
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sh_video->format=sh_video->bih->biCompression;
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mp_set_video_codec_from_tag(sh_video);
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sh_video->disp_w=sh_video->bih->biWidth;
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sh_video->disp_h=abs(sh_video->bih->biHeight);
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}
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break;
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}
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case VIDEO_MPEG4: {
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int pos = 0, vop_cnt=0, units[3];
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videobuf_len=0; videobuf_code_len=0;
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mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Start code... ");
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while(1){
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int i=sync_video_packet(d_video);
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if(i<=0x11F) break; // found it!
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if(!i || !skip_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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return 0;
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}
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
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if(!videobuffer) {
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videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
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if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
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else {
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
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return 0;
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}
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Layer Start code... ");
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while(1){
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int i=sync_video_packet(d_video);
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mp_msg(MSGT_DECVIDEO,MSGL_V,"M4V: 0x%X\n",i);
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if(i>=0x120 && i<=0x12F) break; // found it!
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if(!i || !read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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return 0;
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}
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}
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pos = videobuf_len+4;
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if(!read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Layer Header\n");
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return 0;
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}
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mp4_header_process_vol(&picture, &(videobuffer[pos]));
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mp_msg(MSGT_DECVIDEO,MSGL_V,"OK! FPS SEEMS TO BE %.3f\nSearching for Video Object Plane Start code... ", sh_video->fps);
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mp4_init:
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while(1){
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int i=sync_video_packet(d_video);
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if(i==0x1B6) break; // found it!
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if(!i || !read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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return 0;
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}
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}
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pos = videobuf_len+4;
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if(!read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Plane Header\n");
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return 0;
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}
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mp4_header_process_vop(&picture, &(videobuffer[pos]));
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sh_video->disp_w = picture.display_picture_width;
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sh_video->disp_h = picture.display_picture_height;
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units[vop_cnt] = picture.timeinc_unit;
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vop_cnt++;
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//mp_msg(MSGT_DECVIDEO,MSGL_V, "TYPE: %d, unit: %d\n", picture.picture_type, picture.timeinc_unit);
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if(!picture.fps) {
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int i, mn, md, mx, diff;
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if(vop_cnt < 3)
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goto mp4_init;
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i=0;
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mn = mx = units[0];
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for(i=0; i<3; i++) {
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if(units[i] < mn)
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mn = units[i];
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if(units[i] > mx)
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mx = units[i];
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}
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md = mn;
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for(i=0; i<3; i++) {
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if((units[i] > mn) && (units[i] < mx))
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md = units[i];
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V, "MIN: %d, mid: %d, max: %d\n", mn, md, mx);
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if(mx - md > md - mn)
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diff = md - mn;
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else
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diff = mx - md;
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if(diff > 0){
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picture.fps = ((float)picture.timeinc_resolution) / diff;
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mp_msg(MSGT_DECVIDEO,MSGL_V, "FPS seems to be: %f, resolution: %d, delta_units: %d\n", picture.fps, picture.timeinc_resolution, diff);
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}
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}
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if(picture.fps) {
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sh_video->fps=picture.fps;
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sh_video->frametime=1.0/picture.fps;
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mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
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sh_video->format=0x10000004;
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break;
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}
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case VIDEO_H264: {
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int pos = 0;
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videobuf_len=0; videobuf_code_len=0;
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mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence parameter set... ");
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while(1){
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int i=sync_video_packet(d_video);
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if((i&~0x60) == 0x107 && i != 0x107) break; // found it!
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if(!i || !skip_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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return 0;
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}
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
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if(!videobuffer) {
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videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
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if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
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else {
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
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return 0;
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}
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}
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pos = videobuf_len+4;
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if(!read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read sequence parameter set\n");
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return 0;
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}
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h264_parse_sps(&picture, &(videobuffer[pos]), videobuf_len - pos);
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sh_video->disp_w=picture.display_picture_width;
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sh_video->disp_h=picture.display_picture_height;
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mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for picture parameter set... ");
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while(1){
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int i=sync_video_packet(d_video);
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mp_msg(MSGT_DECVIDEO,MSGL_V,"H264: 0x%X\n",i);
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if((i&~0x60) == 0x108 && i != 0x108) break; // found it!
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if(!i || !read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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return 0;
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}
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\nSearching for Slice... ");
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while(1){
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int i=sync_video_packet(d_video);
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if((i&~0x60) == 0x101 || (i&~0x60) == 0x102 || (i&~0x60) == 0x105) break; // found it!
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if(!i || !read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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return 0;
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}
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
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sh_video->format=0x10000005;
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if(picture.fps) {
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sh_video->fps=picture.fps;
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sh_video->frametime=1.0/picture.fps;
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mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
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}
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break;
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}
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case VIDEO_MPEG12: {
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if (d_video->demuxer->file_format == DEMUXER_TYPE_ASF) { // DVR-MS
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if(!sh_video->bih) return 0;
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sh_video->format=sh_video->bih->biCompression;
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}
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mpeg_header_parser:
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// Find sequence_header first:
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videobuf_len=0; videobuf_code_len=0;
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telecine=0; telecine_cnt=-2.5;
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mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence header... ");
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while(1){
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int i=sync_video_packet(d_video);
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if(i==0x1B3) break; // found it!
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if(!i || !skip_video_packet(d_video)){
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if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) ) mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"MPEG: FATAL: EOF while searching for sequence header.\n");
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return 0;
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}
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
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// ========= Read & process sequence header & extension ============
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if(!videobuffer) {
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videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
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if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
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else {
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
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return 0;
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}
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}
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if(!read_video_packet(d_video)){
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"FATAL: Cannot read sequence header.\n");
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return 0;
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}
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if(mp_header_process_sequence_header (&picture, &videobuffer[4])) {
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"MPEG: bad sequence header\n");
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goto mpeg_header_parser;
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}
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if(sync_video_packet(d_video)==0x1B5){ // next packet is seq. ext.
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int pos=videobuf_len;
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if(!read_video_packet(d_video)){
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"FATAL: Cannot read sequence header extension.\n");
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return 0;
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}
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if(mp_header_process_extension (&picture, &videobuffer[pos+4])) {
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"MPEG: bad sequence header extension\n");
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return 0;
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}
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}
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// display info:
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sh_video->format=picture.mpeg1?0x10000001:0x10000002; // mpeg video
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sh_video->fps=picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
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if(!sh_video->fps){
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sh_video->frametime=0;
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} else {
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sh_video->frametime=1.0/sh_video->fps;
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}
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sh_video->disp_w=picture.display_picture_width;
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sh_video->disp_h=picture.display_picture_height;
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// bitrate:
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if(picture.bitrate!=0x3FFFF) // unspecified/VBR ?
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sh_video->i_bps=picture.bitrate * 400 / 8;
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// info:
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mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"mpeg bitrate: %d (%X)\n",picture.bitrate,picture.bitrate);
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mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO: %s %dx%d (aspect %d) %5.3f fps %5.1f kbps (%4.1f kbyte/s)\n",
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picture.mpeg1?"MPEG1":"MPEG2",
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sh_video->disp_w,sh_video->disp_h,
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picture.aspect_ratio_information,
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sh_video->fps,
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sh_video->i_bps * 8 / 1000.0,
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sh_video->i_bps / 1000.0 );
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break;
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}
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case VIDEO_VC1: {
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// Find sequence_header:
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videobuf_len=0;
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videobuf_code_len=0;
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mp_msg(MSGT_DECVIDEO,MSGL_INFO,"Searching for VC1 sequence header... ");
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while(1){
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int i=sync_video_packet(d_video);
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if(i==0x10F) break; // found it!
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if(!i || !skip_video_packet(d_video)){
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if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) ) mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
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mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't find VC-1 sequence header\n");
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return 0;
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}
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}
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mp_msg(MSGT_DECVIDEO,MSGL_INFO,"found\n");
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if(!videobuffer) {
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videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
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if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
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else {
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mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
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return 0;
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}
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}
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if(!read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't read VC-1 sequence header!\n");
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return 0;
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}
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while(1) {
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int i=sync_video_packet(d_video);
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if(i==0x10E) break; // found it!
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if(!i || !skip_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't find VC-1 entry point sync-code:(\n");
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return 0;
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}
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}
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if(!read_video_packet(d_video)){
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mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't read VC-1 entry point sync-code:(\n");
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return 0;
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}
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if(mp_vc1_decode_sequence_header(&picture, &videobuffer[4], videobuf_len-4)) {
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sh_video->bih = calloc(1, sizeof(*sh_video->bih) + videobuf_len);
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if(sh_video->bih == NULL) {
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Couldn't alloc %zu bytes for VC-1 extradata!\n", sizeof(*sh_video->bih) + videobuf_len);
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return 0;
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}
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sh_video->bih->biSize= sizeof(*sh_video->bih) + videobuf_len;
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memcpy(sh_video->bih + 1, videobuffer, videobuf_len);
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sh_video->bih->biCompression = sh_video->format;
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sh_video->bih->biWidth = sh_video->disp_w = picture.display_picture_width;
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sh_video->bih->biHeight = sh_video->disp_h = picture.display_picture_height;
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if(picture.fps > 0) {
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sh_video->frametime=1.0/picture.fps;
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sh_video->fps = picture.fps;
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}
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mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO: VC-1 %dx%d, %5.3f fps, header len: %d\n",
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sh_video->disp_w, sh_video->disp_h, sh_video->fps, videobuf_len);
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}
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break;
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}
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} // switch(file_format)
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if (d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_PS ||
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d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_TS)
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mp_set_video_codec_from_tag(sh_video);
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return 1;
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}
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static void process_userdata(const unsigned char* buf,int len){
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int i;
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/* if the user data starts with "CC", assume it is a CC info packet */
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if(len>2 && buf[0]=='C' && buf[1]=='C'){
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// mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"video.c: process_userdata() detected Closed Captions!\n");
|
|
//subcc_process_data(buf+2,len-2);
|
|
}
|
|
if(verbose<2) return;
|
|
fprintf(stderr, "user_data: len=%3d %02X %02X %02X %02X '",
|
|
len, buf[0], buf[1], buf[2], buf[3]);
|
|
for(i=0;i<len;i++)
|
|
// if(buf[i]>=32 && buf[i]<127) fputc(buf[i], stderr);
|
|
if(buf[i]&0x60) fputc(buf[i]&0x7F, stderr);
|
|
fprintf(stderr, "'\n");
|
|
}
|
|
|
|
int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps){
|
|
demux_stream_t *d_video=sh_video->ds;
|
|
demuxer_t *demuxer=d_video->demuxer;
|
|
float frame_time=1;
|
|
float pts1=d_video->pts;
|
|
float pts=0;
|
|
float fps;
|
|
int picture_coding_type=0;
|
|
int in_size=0;
|
|
video_codec_t video_codec = find_video_codec(sh_video);
|
|
sh_video->needs_parsing = video_codec != VIDEO_OTHER;
|
|
|
|
*start=NULL;
|
|
|
|
if(video_codec == VIDEO_MPEG12){
|
|
int in_frame=0;
|
|
//float newfps;
|
|
//videobuf_len=0;
|
|
while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE){
|
|
int i=sync_video_packet(d_video);
|
|
//void* buffer=&videobuffer[videobuf_len+4];
|
|
int start=videobuf_len+4;
|
|
if(in_frame){
|
|
if(i<0x101 || i>=0x1B0){ // not slice code -> end of frame
|
|
if(!i) return -1; // EOF
|
|
break;
|
|
}
|
|
} else {
|
|
if(i==0x100){
|
|
pts=d_video->pts;
|
|
d_video->pts=0;
|
|
}
|
|
if(i>=0x101 && i<0x1B0) in_frame=1; // picture startcode
|
|
else if(!i) return -1; // EOF
|
|
}
|
|
if(!read_video_packet(d_video)) return -1; // EOF
|
|
// process headers:
|
|
switch(i){
|
|
case 0x1B3: mp_header_process_sequence_header (&picture, &videobuffer[start]);break;
|
|
case 0x1B5: mp_header_process_extension (&picture, &videobuffer[start]);break;
|
|
case 0x1B2: process_userdata (&videobuffer[start], videobuf_len-start);break;
|
|
case 0x100: picture_coding_type=(videobuffer[start+1] >> 3) & 7;break;
|
|
}
|
|
}
|
|
fps = picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
|
|
|
|
*start=videobuffer; in_size=videobuf_len;
|
|
|
|
// get mpeg fps:
|
|
if(sh_video->fps!=fps) if(!force_fps && !telecine){
|
|
mp_msg(MSGT_CPLAYER,MSGL_WARN,"Warning! FPS changed %5.3f -> %5.3f (%f) [%d] \n",sh_video->fps,fps,sh_video->fps-fps,picture.frame_rate_code);
|
|
sh_video->fps=fps;
|
|
sh_video->frametime=1.0/fps;
|
|
}
|
|
|
|
// fix mpeg2 frametime:
|
|
frame_time=(picture.display_time)*0.01f;
|
|
picture.display_time=100;
|
|
videobuf_len=0;
|
|
|
|
telecine_cnt*=0.9; // drift out error
|
|
telecine_cnt+=frame_time-5.0/4.0;
|
|
mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"\r telecine = %3.1f %5.3f \n",frame_time,telecine_cnt);
|
|
|
|
if(telecine){
|
|
frame_time=1;
|
|
if(telecine_cnt<-1.5 || telecine_cnt>1.5){
|
|
mp_tmsg(MSGT_DECVIDEO,MSGL_INFO,"\ndemux_mpg: 30000/1001fps NTSC content detected, switching framerate.\n");
|
|
telecine=0;
|
|
}
|
|
} else
|
|
if(telecine_cnt>-0.5 && telecine_cnt<0.5 && !force_fps){
|
|
sh_video->fps=sh_video->fps*4/5;
|
|
sh_video->frametime=sh_video->frametime*5/4;
|
|
mp_tmsg(MSGT_DECVIDEO,MSGL_INFO,"\ndemux_mpg: 24000/1001fps progressive NTSC content detected, switching framerate.\n");
|
|
telecine=1;
|
|
}
|
|
} else if(video_codec == VIDEO_MPEG4){
|
|
while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE){
|
|
int i=sync_video_packet(d_video);
|
|
if(!i) return -1;
|
|
if(!read_video_packet(d_video)) return -1; // EOF
|
|
if(i==0x1B6) break;
|
|
}
|
|
*start=videobuffer; in_size=videobuf_len;
|
|
videobuf_len=0;
|
|
} else if(video_codec == VIDEO_H264){
|
|
int in_picture = 0;
|
|
while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE){
|
|
int i=sync_video_packet(d_video);
|
|
int pos = videobuf_len+4;
|
|
if(!i) return -1;
|
|
if(!read_video_packet(d_video)) return -1; // EOF
|
|
if((i&~0x60) == 0x107 && i != 0x107) {
|
|
h264_parse_sps(&picture, &(videobuffer[pos]), videobuf_len - pos);
|
|
if(picture.fps > 0) {
|
|
sh_video->fps=picture.fps;
|
|
sh_video->frametime=1.0/picture.fps;
|
|
}
|
|
i=sync_video_packet(d_video);
|
|
if(!i) return -1;
|
|
if(!read_video_packet(d_video)) return -1; // EOF
|
|
}
|
|
|
|
// here starts the access unit end detection code
|
|
// see the mail on MPlayer-dev-eng for details:
|
|
// Date: Sat, 17 Sep 2005 11:24:06 +0200
|
|
// Subject: Re: [MPlayer-dev-eng] [RFC] h264 ES parser problems
|
|
// Message-ID: <20050917092406.GA7699@rz.uni-karlsruhe.de>
|
|
if((i&~0x60) == 0x101 || (i&~0x60) == 0x102 || (i&~0x60) == 0x105)
|
|
// found VCL NAL with slice header i.e. start of current primary coded
|
|
// picture, so start scanning for the end now
|
|
in_picture = 1;
|
|
if (in_picture) {
|
|
i = sync_video_packet(d_video) & ~0x60; // code of next packet
|
|
if(i == 0x106 || i == 0x109) break; // SEI or access unit delim.
|
|
if(i == 0x101 || i == 0x102 || i == 0x105) {
|
|
// assuming arbitrary slice ordering is not allowed, the
|
|
// first_mb_in_slice (golomb encoded) value should be 0 then
|
|
// for the first VCL NAL in a picture
|
|
if (demux_peekc(d_video) & 0x80)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
*start=videobuffer; in_size=videobuf_len;
|
|
videobuf_len=0;
|
|
} else if(video_codec == VIDEO_VC1) {
|
|
while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE) {
|
|
int i=sync_video_packet(d_video);
|
|
if(!i) return -1;
|
|
if(!read_video_packet(d_video)) return -1; // EOF
|
|
if(i==0x10D) break;
|
|
}
|
|
*start=videobuffer;
|
|
in_size=videobuf_len;
|
|
videobuf_len=0;
|
|
} else {
|
|
// frame-based file formats: (AVI,ASF,MOV)
|
|
in_size=ds_get_packet(d_video,start);
|
|
if(in_size<0) return -1; // EOF
|
|
}
|
|
|
|
|
|
//------------------------ frame decoded. --------------------
|
|
|
|
// Increase video timers:
|
|
sh_video->num_frames+=frame_time;
|
|
++sh_video->num_frames_decoded;
|
|
|
|
frame_time*=sh_video->frametime;
|
|
|
|
// override frame_time for variable/unknown FPS formats:
|
|
if(!force_fps) switch(demuxer->file_format){
|
|
case DEMUXER_TYPE_GIF:
|
|
case DEMUXER_TYPE_MATROSKA:
|
|
case DEMUXER_TYPE_MNG:
|
|
if(d_video->pts>0 && pts1>0 && d_video->pts>pts1)
|
|
frame_time=d_video->pts-pts1;
|
|
break;
|
|
case DEMUXER_TYPE_TV:
|
|
case DEMUXER_TYPE_ASF: {
|
|
double next_pts = ds_get_next_pts(d_video);
|
|
double d= (next_pts != MP_NOPTS_VALUE) ? next_pts - d_video->pts : d_video->pts-pts1;
|
|
if(d>=0){
|
|
if(d>0){
|
|
if((int)sh_video->fps==1000)
|
|
mp_msg(MSGT_CPLAYER,MSGL_V,"\navg. framerate: %d fps \n",(int)(1.0f/d));
|
|
sh_video->frametime=d; // 1ms
|
|
sh_video->fps=1.0f/d;
|
|
}
|
|
frame_time = d;
|
|
} else {
|
|
mp_msg(MSGT_CPLAYER,MSGL_WARN,"\nInvalid frame duration value (%5.3f/%5.3f => %5.3f). Defaulting to %5.3f sec.\n",d_video->pts,next_pts,d,frame_time);
|
|
// frame_time = 1/25.0;
|
|
}
|
|
}
|
|
break;
|
|
case DEMUXER_TYPE_LAVF:
|
|
if((int)sh_video->fps==1000 || (int)sh_video->fps<=1){
|
|
double next_pts = ds_get_next_pts(d_video);
|
|
double d= (next_pts != MP_NOPTS_VALUE) ? next_pts - d_video->pts : d_video->pts-pts1;
|
|
if(d>=0){
|
|
frame_time = d;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
if(video_codec == VIDEO_MPEG12){
|
|
sh_video->pts+=frame_time;
|
|
if(picture_coding_type==1)
|
|
d_video->keyframe = true;
|
|
if(picture_coding_type<=2 && sh_video->i_pts){
|
|
sh_video->pts=sh_video->i_pts;
|
|
sh_video->i_pts=pts;
|
|
} else {
|
|
if(pts){
|
|
if(picture_coding_type<=2) sh_video->i_pts=pts;
|
|
else sh_video->pts=pts;
|
|
}
|
|
}
|
|
} else
|
|
sh_video->pts=d_video->pts;
|
|
|
|
if(frame_time_ptr) *frame_time_ptr=frame_time;
|
|
return in_size;
|
|
}
|