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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html
#include "cap_mfx_writer.hpp"
#include "opencv2/core/base.hpp"
#include "cap_mfx_common.hpp"
using namespace std;
using namespace cv;
inline mfxU32 codecIdByFourCC(int fourcc)
{
if (fourcc == CC_X264 || fourcc == CC_H264 || fourcc == CC_AVC)
return MFX_CODEC_AVC;
else if (fourcc == CC_H265 || fourcc == CC_HEVC)
return MFX_CODEC_HEVC;
else if (fourcc == CC_MPG2)
return MFX_CODEC_MPEG2;
else
return (mfxU32)-1;
}
VideoWriter_IntelMFX::VideoWriter_IntelMFX(const String &filename, int _fourcc, double fps, Size frameSize_, bool)
: session(0), plugin(0), deviceHandler(0), bs(0), encoder(0), pool(0), frameSize(frameSize_), good(false)
{
mfxStatus res = MFX_ERR_NONE;
if (frameSize.width % 2 || frameSize.height % 2)
{
MSG(cerr << "MFX: Invalid frame size passed to encoder" << endl);
return;
}
// Init device and session
deviceHandler = new VAHandle();
session = new MFXVideoSession();
if (!deviceHandler->init(*session))
{
MSG(cerr << "MFX: Can't initialize session" << endl);
return;
}
// Load appropriate plugin
mfxU32 codecId = codecIdByFourCC(_fourcc);
if (codecId == (mfxU32)-1)
{
MSG(cerr << "MFX: Unsupported FourCC: " << FourCC(_fourcc) << endl);
return;
}
plugin = Plugin::loadEncoderPlugin(*session, codecId);
if (plugin && !plugin->isGood())
{
MSG(cerr << "MFX: LoadPlugin failed for codec: " << codecId << " (" << FourCC(_fourcc) << ")" << endl);
return;
}
// Init encoder
encoder = new MFXVideoENCODE(*session);
mfxVideoParam params;
memset(¶ms, 0, sizeof(params));
params.mfx.CodecId = codecId;
params.mfx.TargetUsage = MFX_TARGETUSAGE_BALANCED;
params.mfx.TargetKbps = frameSize.area() * fps / 500; // TODO: set in options
params.mfx.RateControlMethod = MFX_RATECONTROL_VBR;
params.mfx.FrameInfo.FrameRateExtN = cvRound(fps * 1000);
params.mfx.FrameInfo.FrameRateExtD = 1000;
params.mfx.FrameInfo.FourCC = MFX_FOURCC_NV12;
params.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
params.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
params.mfx.FrameInfo.CropX = 0;
params.mfx.FrameInfo.CropY = 0;
params.mfx.FrameInfo.CropW = frameSize.width;
params.mfx.FrameInfo.CropH = frameSize.height;
params.mfx.FrameInfo.Width = alignSize(frameSize.width, 32);
params.mfx.FrameInfo.Height = alignSize(frameSize.height, 32);
params.IOPattern = MFX_IOPATTERN_IN_SYSTEM_MEMORY;
res = encoder->Query(¶ms, ¶ms);
DBG(cout << "MFX Query: " << res << endl << params.mfx << params.mfx.FrameInfo);
if (res < MFX_ERR_NONE)
{
MSG(cerr << "MFX: Query failed: " << res << endl);
return;
}
// Init surface pool
pool = SurfacePool::create(encoder, params);
if (!pool)
{
MSG(cerr << "MFX: Failed to create surface pool" << endl);
return;
}
// Init encoder
res = encoder->Init(¶ms);
DBG(cout << "MFX Init: " << res << endl << params.mfx.FrameInfo);
if (res < MFX_ERR_NONE)
{
MSG(cerr << "MFX: Failed to init encoder: " << res << endl);
return;
}
// Open output bitstream
{
mfxVideoParam par;
memset(&par, 0, sizeof(par));
res = encoder->GetVideoParam(&par);
DBG(cout << "MFX GetVideoParam: " << res << endl << "requested " << par.mfx.BufferSizeInKB << " kB" << endl);
CV_Assert(res >= MFX_ERR_NONE);
bs = new WriteBitstream(filename.c_str(), par.mfx.BufferSizeInKB * 1024 * 2);
if (!bs->isOpened())
{
MSG(cerr << "MFX: Failed to open output file: " << filename << endl);
return;
}
}
good = true;
}
VideoWriter_IntelMFX::~VideoWriter_IntelMFX()
{
if (isOpened())
{
DBG(cout << "====== Drain bitstream..." << endl);
Mat dummy;
while (write_one(dummy)) {}
DBG(cout << "====== Drain Finished" << endl);
}
cleanup(bs);
cleanup(pool);
cleanup(encoder);
cleanup(plugin);
cleanup(session);
cleanup(deviceHandler);
}
double VideoWriter_IntelMFX::getProperty(int) const
{
MSG(cerr << "MFX: getProperty() is not implemented" << endl);
return 0;
}
bool VideoWriter_IntelMFX::setProperty(int, double)
{
MSG(cerr << "MFX: setProperty() is not implemented" << endl);
return false;
}
bool VideoWriter_IntelMFX::isOpened() const
{
return good;
}
void VideoWriter_IntelMFX::write(cv::InputArray input)
{
write_one(input);
}
inline static void to_nv12(cv::InputArray bgr, cv::Mat & Y, cv::Mat & UV)
{
const int height = bgr.rows();
const int width = bgr.cols();
Mat yuv;
cvtColor(bgr, yuv, CV_BGR2YUV_I420);
CV_Assert(yuv.isContinuous());
Mat Y_(Y, Rect(0, 0, width, height));
yuv.rowRange(0, height).copyTo(Y_);
Mat UV_planar(height, width / 2, CV_8UC1, yuv.ptr(height));
Mat u_and_v[2] = {
UV_planar.rowRange(0, height / 2),
UV_planar.rowRange(height / 2, height),
};
Mat uv;
cv::merge(u_and_v, 2, uv);
Mat UV_(UV, Rect(0, 0, width, height / 2));
uv.reshape(1).copyTo(UV_);
}
bool VideoWriter_IntelMFX::write_one(cv::InputArray bgr)
{
mfxStatus res;
mfxFrameSurface1 *workSurface = 0;
mfxSyncPoint sync;
if (!bgr.empty() && (bgr.dims() != 2 || bgr.type() != CV_8UC3 || bgr.size() != frameSize))
{
MSG(cerr << "MFX: invalid frame passed to encoder: "
<< "dims/depth/cn=" << bgr.dims() << "/" << bgr.depth() << "/" << bgr.channels()
<< ", size=" << bgr.size() << endl);
return false;
}
if (!bgr.empty())
{
workSurface = pool->getFreeSurface();
if (!workSurface)
{
// not enough surfaces
MSG(cerr << "MFX: Failed to get free surface" << endl);
return false;
}
const int rows = workSurface->Info.Height;
const int cols = workSurface->Info.Width;
Mat Y(rows, cols, CV_8UC1, workSurface->Data.Y, workSurface->Data.Pitch);
Mat UV(rows / 2, cols, CV_8UC1, workSurface->Data.UV, workSurface->Data.Pitch);
to_nv12(bgr, Y, UV);
CV_Assert(Y.ptr() == workSurface->Data.Y);
CV_Assert(UV.ptr() == workSurface->Data.UV);
}
while (true)
{
outSurface = 0;
DBG(cout << "Calling with surface: " << workSurface << endl);
res = encoder->EncodeFrameAsync(NULL, workSurface, &bs->stream, &sync);
if (res == MFX_ERR_NONE)
{
res = session->SyncOperation(sync, 1000); // 1 sec, TODO: provide interface to modify timeout
if (res == MFX_ERR_NONE)
{
// ready to write
if (!bs->write())
{
MSG(cerr << "MFX: Failed to write bitstream" << endl);
return false;
}
else
{
DBG(cout << "Write bitstream" << endl);
return true;
}
}
else
{
MSG(cerr << "MFX: Sync error: " << res << endl);
return false;
}
}
else if (res == MFX_ERR_MORE_DATA)
{
DBG(cout << "ERR_MORE_DATA" << endl);
return false;
}
else if (res == MFX_WRN_DEVICE_BUSY)
{
DBG(cout << "Waiting for device" << endl);
sleep(1);
continue;
}
else
{
MSG(cerr << "MFX: Bad status: " << res << endl);
return false;
}
return true;
}
}
Ptr<VideoWriter_IntelMFX> VideoWriter_IntelMFX::create(const String &filename, int _fourcc, double fps, Size frameSize, bool isColor)
{
if (codecIdByFourCC(_fourcc) > 0)
{
Ptr<VideoWriter_IntelMFX> a = makePtr<VideoWriter_IntelMFX>(filename, _fourcc, fps, frameSize, isColor);
if (a->isOpened())
return a;
}
return Ptr<VideoWriter_IntelMFX>();
}