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ADM_videoCopy.cpp
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/
ADM_videoCopy.cpp
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/**
\file ADM_videoCopy
\brief Wrapper
(c) Mean 2008/GPLv2
*/
/***************************************************************************
* *
* This program 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. *
* *
***************************************************************************/
#include "ADM_cpp.h"
using std::string;
#include "ADM_default.h"
#include "ADM_videoCopy.h"
#include "ADM_edit.hxx"
#include "ADM_coreUtils.h"
#include "ADM_vidMisc.h"
#include "prefs.h"
extern ADM_Composer *video_body; // Fixme!
#if 1
#define aprintf ADM_info
#else
#define aprintf(...) {}
#endif
/**
\fn ADM_videoStreamCopy
*/
ADM_videoStreamCopy::ADM_videoStreamCopy(uint64_t startTime,uint64_t endTime)
{
aviInfo info;
uint64_t ptsStart=startTime+1;
uint64_t dtsStart;
ADM_info("Creating copy video stream, start time: %s\n",ADM_us2plain(startTime));
ADM_info("End time: %s\n",ADM_us2plain(endTime));
video_body->getVideoInfo(&info);
width=info.width;
height=info.height;
fourCC=info.fcc;
averageFps1000=info.fps1000;
frameIncrement=video_body->getFrameIncrement();
isCFR=false;
// Estimate start frame
if(false==video_body->getPKFramePTS(&ptsStart))
{
ADM_warning("Cannot find previous keyframe\n");
ptsStart=dtsStart=startTime;
}else
{
uint64_t delta=0;
video_body->getPtsDtsDelta(ptsStart,&delta);
ADM_info("PTS/DTS delta=%" PRIu64" us\n",delta);
// Do we have non droppable b frame ?
uint32_t bframeDelay;
if(true==video_body->getNonClosedGopDelay(ptsStart,&bframeDelay) && bframeDelay)
{
if(bframeDelay+2*frameIncrement>delta) // i.e. delta is wrong
{
bframeDelay+=2*(int)frameIncrement-(int)delta;
ADM_info("Some B-frames are not droppable, increasing delay by %d us\n",bframeDelay);
videoDelay+=bframeDelay;
}else
{
ADM_info("Some B-frames are not droppable, but PTS delay is sufficient\n");
}
}else
{
videoDelay=0;
}
//videoDelay
if(delta>ptsStart)
{
videoDelay+=delta-ptsStart;
dtsStart=0;
ADM_info("Dts is too early, delaying everything by %" PRIu64" us\n",videoDelay);
}else
{
dtsStart=ptsStart-delta;
}
endTime+=videoDelay;
// Now search the DTS associated with it...
}
eofMet=false;
currentFrame=0;
sanitizeDts=false;
prefs->get(FEATURES_COPY_MODE_SANITIZE_DTS, &sanitizeDts);
this->startTimeDts=dtsStart;
this->startTimePts=ptsStart;
this->endTimePts=endTime;
rewindTime=ptsStart;
rewind();
ADM_info(" Fixating start time by %d\n",abs((int)(startTime-startTimeDts)));
ADM_info(" Starting DTS=%" PRIu64", PTS=%" PRIu64" ms\n",startTimeDts/1000,startTimePts/1000);
}
/**
*/
bool ADM_videoStreamCopy::rewind(void)
{
return video_body->GoToIntraTime_noDecoding(rewindTime);
}
/**
\fn ADM_videoStreamCopy
*/
ADM_videoStreamCopy::~ADM_videoStreamCopy()
{
}
/**
\fn getExtraData
*/
bool ADM_videoStreamCopy::getExtraData(uint32_t *extraLen, uint8_t **extraData)
{
return video_body->getExtraHeaderData(extraLen,extraData);
}
/**
\fn rescaleTs
*/
uint64_t ADM_videoStreamCopy::rescaleTs(uint64_t in)
{
if(in==ADM_NO_PTS) return in;
if(in>=startTimeDts) return in-startTimeDts;
ADM_warning("Negative time!\n");
ADM_warning("Current time = %" PRIu64"\n",in);
ADM_warning("start time = %" PRIu64"\n",startTimeDts);
return 0;
}
/**
\fn getStartTime
*/
uint64_t ADM_videoStreamCopy::getStartTime(void)
{
return this->startTimeDts;
}
/**
\fn getPacket
*/
bool ADM_videoStreamCopy::getPacket(ADMBitstream *out)
{
if(true==eofMet) return false;
again:
image.data=out->data;
if(false==video_body->getCompressedPicture(videoDelay,sanitizeDts,&image))
{
ADM_warning("Get packet failed\n");
return false;
}
out->len=image.dataLength;
ADM_assert(out->len<=out->bufferSize);
#if 0
if(image.demuxerPts!=ADM_NO_PTS)
if(image.demuxerPts<startTimePts)
{
if(image.flags & AVI_B_FRAME)
{
ADM_warning("Dropping orphean B frame (PTS=%"PRIu64" ms)\n",image.demuxerPts/1000);
goto again;
}
}
#endif
out->pts=rescaleTs(image.demuxerPts);
out->dts=rescaleTs(image.demuxerDts);
if(image.demuxerPts!=ADM_NO_PTS)
{
if(image.demuxerDts!=ADM_NO_PTS)
{
if(image.demuxerPts<image.demuxerDts)
{
ADM_warning("PTS<DTS : PTS=%" PRIu64" ms , DTS=%" PRIu64"ms\n",image.demuxerPts/1000,image.demuxerDts/1000);
}
}
if(image.demuxerPts>endTimePts )
{
eofMet=true;
return false;
}
}
out->flags=image.flags;
currentFrame++;
return true;
}
/**
\fn getVideoDuration
*/
uint64_t ADM_videoStreamCopy::getVideoDuration(void)
{
//return video_body->getVideoDuration();
return endTimePts-startTimeDts;
}
/**
*/
bool ADM_videoStreamCopy::providePts(void)
{
return true;
}
// EOF