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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "VideoDecoderThread.h"
#include "FFMpegFrameDecoder.h"
#include "../base/Logger.h"
#include "../base/Exception.h"
#include "../base/ScopeTimer.h"
#include "../base/TimeSource.h"
#include "../avgconfigwrapper.h"
struct vdpau_render_state;
using namespace std;
namespace avg {
VideoDecoderThread::VideoDecoderThread(CQueue& cmdQ, VideoMsgQueue& msgQ,
VideoMsgQueue& packetQ, AVStream* pStream, const IntPoint& size, PixelFormat pf,
bool bUseVDPAU)
: WorkerThread<VideoDecoderThread>(string("Video Decoder"), cmdQ,
Logger::category::PROFILE_VIDEO),
m_MsgQ(msgQ),
m_PacketQ(packetQ),
m_pBmpQ(new BitmapQueue()),
m_pHalfBmpQ(new BitmapQueue()),
m_Size(size),
m_PF(pf),
m_bUseVDPAU(bUseVDPAU),
m_bSeekDone(false),
m_bProcessingLastFrames(false)
{
m_pFrameDecoder = FFMpegFrameDecoderPtr(new FFMpegFrameDecoder(pStream));
}
VideoDecoderThread::~VideoDecoderThread()
{
}
bool VideoDecoderThread::init()
{
#if LIBAVCODEC_VERSION_INT > AV_VERSION_INT(54, 28, 0)
m_pFrame = avcodec_alloc_frame();
#else
m_pFrame = new AVFrame;
#endif
return true;
}
void VideoDecoderThread::deinit()
{
#if LIBAVCODEC_VERSION_INT > AV_VERSION_INT(54, 28, 0)
avcodec_free_frame(&m_pFrame);
#else
delete m_pFrame;
#endif
}
static ProfilingZoneID DecoderProfilingZone("Video Decoder Thread", true);
static ProfilingZoneID PacketWaitProfilingZone("Video wait for packet", true);
bool VideoDecoderThread::work()
{
ScopeTimer timer(DecoderProfilingZone);
if (m_bProcessingLastFrames) {
// EOF received, but last frames still need to be decoded.
handleEOF();
} else {
// Standard decoding.
VideoMsgPtr pMsg;
{
ScopeTimer timer(PacketWaitProfilingZone);
pMsg = m_PacketQ.pop(true);
}
switch (pMsg->getType()) {
case VideoMsg::PACKET:
decodePacket(pMsg->getPacket());
break;
case VideoMsg::END_OF_FILE:
handleEOF();
m_bProcessingLastFrames = true;
break;
case VideoMsg::SEEK_DONE:
handleSeekDone(pMsg);
break;
case VideoMsg::CLOSED:
close();
break;
default:
pMsg->dump();
AVG_ASSERT(false);
}
}
ThreadProfiler::get()->reset();
return true;
}
void VideoDecoderThread::setFPS(float fps)
{
m_pFrameDecoder->setFPS(fps);
}
void VideoDecoderThread::returnFrame(VideoMsgPtr pMsg)
{
m_pBmpQ->push(pMsg->getFrameBitmap(0));
if (pixelFormatIsPlanar(m_PF)) {
m_pHalfBmpQ->push(pMsg->getFrameBitmap(1));
m_pHalfBmpQ->push(pMsg->getFrameBitmap(2));
if (m_PF == YCbCrA420p) {
m_pBmpQ->push(pMsg->getFrameBitmap(3));
}
}
}
void VideoDecoderThread::decodePacket(AVPacket* pPacket)
{
bool bGotPicture = m_pFrameDecoder->decodePacket(pPacket, m_pFrame, m_bSeekDone);
if (bGotPicture) {
m_bSeekDone = false;
sendFrame(m_pFrame);
}
}
void VideoDecoderThread::handleEOF()
{
bool bGotPicture = m_pFrameDecoder->decodeLastFrame(m_pFrame);
if (bGotPicture) {
sendFrame(m_pFrame);
} else {
m_bProcessingLastFrames = false;
VideoMsgPtr pMsg(new VideoMsg());
pMsg->setEOF();
pushMsg(pMsg);
}
}
void VideoDecoderThread::handleSeekDone(VideoMsgPtr pMsg)
{
m_pFrameDecoder->handleSeek();
m_bSeekDone = true;
m_MsgQ.clear();
pushMsg(pMsg);
}
static ProfilingZoneID CopyImageProfilingZone("Copy image", true);
void VideoDecoderThread::sendFrame(AVFrame* pFrame)
{
VideoMsgPtr pMsg(new VideoMsg());
if (m_bUseVDPAU) {
vdpau_render_state *pRenderState = (vdpau_render_state *)pFrame->data[0];
pMsg->setVDPAUFrame(pRenderState, m_pFrameDecoder->getCurTime());
} else {
vector<BitmapPtr> pBmps;
if (pixelFormatIsPlanar(m_PF)) {
ScopeTimer timer(CopyImageProfilingZone);
IntPoint halfSize(m_Size.x/2, m_Size.y/2);
pBmps.push_back(getBmp(m_pBmpQ, m_Size, I8));
pBmps.push_back(getBmp(m_pHalfBmpQ, halfSize, I8));
pBmps.push_back(getBmp(m_pHalfBmpQ, halfSize, I8));
if (m_PF == YCbCrA420p) {
pBmps.push_back(getBmp(m_pBmpQ, m_Size, I8));
}
for (unsigned i = 0; i < pBmps.size(); ++i) {
m_pFrameDecoder->copyPlaneToBmp(pBmps[i], pFrame->data[i],
pFrame->linesize[i]);
}
} else {
pBmps.push_back(getBmp(m_pBmpQ, m_Size, m_PF));
m_pFrameDecoder->convertFrameToBmp(pFrame, pBmps[0]);
}
pMsg->setFrame(pBmps, m_pFrameDecoder->getCurTime());
}
pushMsg(pMsg);
}
void VideoDecoderThread::close()
{
m_MsgQ.clear();
stop();
}
BitmapPtr VideoDecoderThread::getBmp(BitmapQueuePtr pBmpQ, const IntPoint& size,
PixelFormat pf)
{
BitmapPtr pBmp = pBmpQ->pop(false);
if (pBmp) {
AVG_ASSERT (pBmp->getSize() == size && pBmp->getPixelFormat() == pf);
return pBmp;
} else {
return BitmapPtr(new Bitmap(size, pf));
}
}
static ProfilingZoneID PushMsgProfilingZone("Push message", true);
void VideoDecoderThread::pushMsg(VideoMsgPtr pMsg)
{
ScopeTimer timer(PushMsgProfilingZone);
m_MsgQ.push(pMsg);
}
}
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