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mpv/libmpdemux/video.c
wm4 c323592c3a libmpdemux: add back demux_mpg 
Apparently this was needed for good DVD playback.

This demuxer has been removed in 1fde09db6f. All code added comes
from the revision before that. Some other bits have been removed in
later commits, and are added back as well.

Usage of memalign() is replaced by av_malloc(). As far as I can tell,
this memory is never free'd or reallocated, so no calls to av_free()
have been added.

The code re-added to video.c is plain horrible, full of code
duplication, full of demuxer/codecs specifics, but apparently needed.

Unrelated to re-adding the demuxer, re-add one codepath for
DEMUXER_TYPE_TV, which was accidentally removed in the same commit
demux_mpg was removed.

The closed captions decoder is not re-added.
2012-09-18 21:07:30 +02:00

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/*
* video frame reading
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libavutil/mem.h>
#include "mp_msg.h"
#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "parse_es.h"
#include "mpeg_hdr.h"
/* sub_cc (closed captions)*/
//#include "sub/sub_cc.h"
/* biCompression constant */
#define BI_RGB 0L
static mp_mpeg_header_t picture;
static int telecine=0;
static float telecine_cnt=-2.5;
typedef enum {
VIDEO_MPEG12,
VIDEO_MPEG4,
VIDEO_H264,
VIDEO_VC1,
VIDEO_OTHER
} video_codec_t;
static video_codec_t find_video_codec(sh_video_t *sh_video)
{
demux_stream_t *d_video=sh_video->ds;
int fmt = d_video->demuxer->file_format;
if(
(fmt == DEMUXER_TYPE_MPEG_ES) ||
(fmt == DEMUXER_TYPE_MPEG_GXF) ||
(fmt == DEMUXER_TYPE_MPEG_PES) ||
(
(fmt == DEMUXER_TYPE_MPEG_PS || fmt == DEMUXER_TYPE_MPEG_TS) &&
((! sh_video->format) || (sh_video->format==0x10000001) || (sh_video->format==0x10000002))
)
)
return VIDEO_MPEG12;
else if((fmt == DEMUXER_TYPE_MPEG4_ES) ||
((fmt == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000004)) ||
((fmt == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000004))
)
return VIDEO_MPEG4;
else if((fmt == DEMUXER_TYPE_H264_ES) ||
((fmt == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000005)) ||
((fmt == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000005))
)
return VIDEO_H264;
else if((fmt == DEMUXER_TYPE_MPEG_PS || fmt == DEMUXER_TYPE_MPEG_TS) &&
(sh_video->format==mmioFOURCC('W', 'V', 'C', '1')))
return VIDEO_VC1;
else if (fmt == DEMUXER_TYPE_ASF && sh_video->bih && sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' '))
return VIDEO_MPEG12;
else
return VIDEO_OTHER;
}
int video_read_properties(sh_video_t *sh_video){
demux_stream_t *d_video=sh_video->ds;
video_codec_t video_codec = find_video_codec(sh_video);
// Determine image properties:
switch(video_codec){
case VIDEO_OTHER: {
if((d_video->demuxer->file_format == DEMUXER_TYPE_ASF) || (d_video->demuxer->file_format == DEMUXER_TYPE_AVI)) {
// display info:
// in case no strf chunk has been seen in avi, we have no bitmap header
if(!sh_video->bih) return 0;
sh_video->format=sh_video->bih->biCompression;
sh_video->disp_w=sh_video->bih->biWidth;
sh_video->disp_h=abs(sh_video->bih->biHeight);
}
break;
}
case VIDEO_MPEG4: {
int pos = 0, vop_cnt=0, units[3];
videobuf_len=0; videobuf_code_len=0;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Start code... ");
while(1){
int i=sync_video_packet(d_video);
if(i<=0x11F) break; // found it!
if(!i || !skip_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
if(!videobuffer) {
videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Layer Start code... ");
while(1){
int i=sync_video_packet(d_video);
mp_msg(MSGT_DECVIDEO,MSGL_V,"M4V: 0x%X\n",i);
if(i>=0x120 && i<=0x12F) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
pos = videobuf_len+4;
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Layer Header\n");
return 0;
}
mp4_header_process_vol(&picture, &(videobuffer[pos]));
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK! FPS SEEMS TO BE %.3f\nSearching for Video Object Plane Start code... ", sh_video->fps);
mp4_init:
while(1){
int i=sync_video_packet(d_video);
if(i==0x1B6) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
pos = videobuf_len+4;
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Plane Header\n");
return 0;
}
mp4_header_process_vop(&picture, &(videobuffer[pos]));
sh_video->disp_w = picture.display_picture_width;
sh_video->disp_h = picture.display_picture_height;
units[vop_cnt] = picture.timeinc_unit;
vop_cnt++;
//mp_msg(MSGT_DECVIDEO,MSGL_V, "TYPE: %d, unit: %d\n", picture.picture_type, picture.timeinc_unit);
if(!picture.fps) {
int i, mn, md, mx, diff;
if(vop_cnt < 3)
goto mp4_init;
i=0;
mn = mx = units[0];
for(i=0; i<3; i++) {
if(units[i] < mn)
mn = units[i];
if(units[i] > mx)
mx = units[i];
}
md = mn;
for(i=0; i<3; i++) {
if((units[i] > mn) && (units[i] < mx))
md = units[i];
}
mp_msg(MSGT_DECVIDEO,MSGL_V, "MIN: %d, mid: %d, max: %d\n", mn, md, mx);
if(mx - md > md - mn)
diff = md - mn;
else
diff = mx - md;
if(diff > 0){
picture.fps = ((float)picture.timeinc_resolution) / diff;
mp_msg(MSGT_DECVIDEO,MSGL_V, "FPS seems to be: %f, resolution: %d, delta_units: %d\n", picture.fps, picture.timeinc_resolution, diff);
}
}
if(picture.fps) {
sh_video->fps=picture.fps;
sh_video->frametime=1.0/picture.fps;
mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
sh_video->format=0x10000004;
break;
}
case VIDEO_H264: {
int pos = 0;
videobuf_len=0; videobuf_code_len=0;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence parameter set... ");
while(1){
int i=sync_video_packet(d_video);
if((i&~0x60) == 0x107 && i != 0x107) break; // found it!
if(!i || !skip_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
if(!videobuffer) {
videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
return 0;
}
}
pos = videobuf_len+4;
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read sequence parameter set\n");
return 0;
}
h264_parse_sps(&picture, &(videobuffer[pos]), videobuf_len - pos);
sh_video->disp_w=picture.display_picture_width;
sh_video->disp_h=picture.display_picture_height;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for picture parameter set... ");
while(1){
int i=sync_video_packet(d_video);
mp_msg(MSGT_DECVIDEO,MSGL_V,"H264: 0x%X\n",i);
if((i&~0x60) == 0x108 && i != 0x108) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\nSearching for Slice... ");
while(1){
int i=sync_video_packet(d_video);
if((i&~0x60) == 0x101 || (i&~0x60) == 0x102 || (i&~0x60) == 0x105) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
sh_video->format=0x10000005;
if(picture.fps) {
sh_video->fps=picture.fps;
sh_video->frametime=1.0/picture.fps;
mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
}
break;
}
case VIDEO_MPEG12: {
if (d_video->demuxer->file_format == DEMUXER_TYPE_ASF) { // DVR-MS
if(!sh_video->bih) return 0;
sh_video->format=sh_video->bih->biCompression;
}
mpeg_header_parser:
// Find sequence_header first:
videobuf_len=0; videobuf_code_len=0;
telecine=0; telecine_cnt=-2.5;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence header... ");
while(1){
int i=sync_video_packet(d_video);
if(i==0x1B3) break; // found it!
if(!i || !skip_video_packet(d_video)){
if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) ) mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"MPEG: FATAL: EOF while searching for sequence header.\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
// ========= Read & process sequence header & extension ============
if(!videobuffer) {
videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
return 0;
}
}
if(!read_video_packet(d_video)){
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"FATAL: Cannot read sequence header.\n");
return 0;
}
if(mp_header_process_sequence_header (&picture, &videobuffer[4])) {
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"MPEG: bad sequence header\n");
goto mpeg_header_parser;
}
if(sync_video_packet(d_video)==0x1B5){ // next packet is seq. ext.
int pos=videobuf_len;
if(!read_video_packet(d_video)){
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"FATAL: Cannot read sequence header extension.\n");
return 0;
}
if(mp_header_process_extension (&picture, &videobuffer[pos+4])) {
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"MPEG: bad sequence header extension\n");
return 0;
}
}
// display info:
sh_video->format=picture.mpeg1?0x10000001:0x10000002; // mpeg video
sh_video->fps=picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
if(!sh_video->fps){
sh_video->frametime=0;
} else {
sh_video->frametime=1.0/sh_video->fps;
}
sh_video->disp_w=picture.display_picture_width;
sh_video->disp_h=picture.display_picture_height;
// bitrate:
if(picture.bitrate!=0x3FFFF) // unspecified/VBR ?
sh_video->i_bps=picture.bitrate * 400 / 8;
// info:
mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"mpeg bitrate: %d (%X)\n",picture.bitrate,picture.bitrate);
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO: %s %dx%d (aspect %d) %5.3f fps %5.1f kbps (%4.1f kbyte/s)\n",
picture.mpeg1?"MPEG1":"MPEG2",
sh_video->disp_w,sh_video->disp_h,
picture.aspect_ratio_information,
sh_video->fps,
sh_video->i_bps * 8 / 1000.0,
sh_video->i_bps / 1000.0 );
break;
}
case VIDEO_VC1: {
// Find sequence_header:
videobuf_len=0;
videobuf_code_len=0;
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"Searching for VC1 sequence header... ");
while(1){
int i=sync_video_packet(d_video);
if(i==0x10F) break; // found it!
if(!i || !skip_video_packet(d_video)){
if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) ) mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't find VC-1 sequence header\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"found\n");
if(!videobuffer) {
videobuffer = av_malloc(VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"Cannot allocate shared memory.\n");
return 0;
}
}
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't read VC-1 sequence header!\n");
return 0;
}
while(1) {
int i=sync_video_packet(d_video);
if(i==0x10E) break; // found it!
if(!i || !skip_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't find VC-1 entry point sync-code:(\n");
return 0;
}
}
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't read VC-1 entry point sync-code:(\n");
return 0;
}
if(mp_vc1_decode_sequence_header(&picture, &videobuffer[4], videobuf_len-4)) {
sh_video->bih = calloc(1, sizeof(*sh_video->bih) + videobuf_len);
if(sh_video->bih == NULL) {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Couldn't alloc %zu bytes for VC-1 extradata!\n", sizeof(*sh_video->bih) + videobuf_len);
return 0;
}
sh_video->bih->biSize= sizeof(*sh_video->bih) + videobuf_len;
memcpy(sh_video->bih + 1, videobuffer, videobuf_len);
sh_video->bih->biCompression = sh_video->format;
sh_video->bih->biWidth = sh_video->disp_w = picture.display_picture_width;
sh_video->bih->biHeight = sh_video->disp_h = picture.display_picture_height;
if(picture.fps > 0) {
sh_video->frametime=1.0/picture.fps;
sh_video->fps = picture.fps;
}
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO: VC-1 %dx%d, %5.3f fps, header len: %d\n",
sh_video->disp_w, sh_video->disp_h, sh_video->fps, videobuf_len);
}
break;
}
} // switch(file_format)
return 1;
}
static void process_userdata(const unsigned char* buf,int len){
int i;
/* if the user data starts with "CC", assume it is a CC info packet */
if(len>2 && buf[0]=='C' && buf[1]=='C'){
// 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);
*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:
case DEMUXER_TYPE_LAVF_PREFERRED:
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;
}
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