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cap_mfx_common.cpp
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200 lines (168 loc) · 5.74 KB
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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_common.hpp"
// Linux specific
#ifdef __linux__
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#endif
using namespace std;
using namespace cv;
bool DeviceHandler::init(MFXVideoSession &session)
{
mfxStatus res = MFX_ERR_NONE;
mfxIMPL impl = MFX_IMPL_AUTO;
mfxVersion ver = { {19, 1} };
res = session.Init(impl, &ver);
DBG(cout << "MFX SessionInit: " << res << endl);
res = session.QueryIMPL(&impl);
DBG(cout << "MFX QueryIMPL: " << res << " => " << asHex(impl) << endl);
res = session.QueryVersion(&ver);
DBG(cout << "MFX QueryVersion: " << res << " => " << ver.Major << "." << ver.Minor << endl);
if (res != MFX_ERR_NONE)
return false;
return initDeviceSession(session);
}
//==================================================================================================
#ifdef __linux__
VAHandle::VAHandle() {
// TODO: provide a way of modifying this path
const string filename = "/dev/dri/renderD128";
file = open(filename.c_str(), O_RDWR);
if (file < 0)
CV_Error(Error::StsError, "Can't open file: " + filename);
display = vaGetDisplayDRM(file);
}
VAHandle::~VAHandle() {
if (display) {
vaTerminate(display);
}
if (file >= 0) {
close(file);
}
}
bool VAHandle::initDeviceSession(MFXVideoSession &session) {
int majorVer = 0, minorVer = 0;
VAStatus va_res = vaInitialize(display, &majorVer, &minorVer);
DBG(cout << "vaInitialize: " << va_res << endl << majorVer << '.' << minorVer << endl);
if (va_res == VA_STATUS_SUCCESS) {
mfxStatus mfx_res = session.SetHandle(static_cast<mfxHandleType>(MFX_HANDLE_VA_DISPLAY), display);
DBG(cout << "MFX SetHandle: " << mfx_res << endl);
if (mfx_res == MFX_ERR_NONE) {
return true;
}
}
return false;
}
#endif // __linux__
DeviceHandler * createDeviceHandler()
{
#if defined __linux__
return new VAHandle();
#elif defined _WIN32
return new DXHandle();
#else
return 0;
#endif
}
//==================================================================================================
SurfacePool::SurfacePool(ushort width_, ushort height_, ushort count, const mfxFrameInfo &frameInfo, uchar bpp)
: width(alignSize(width_, 32)),
height(alignSize(height_, 32)),
oneSize(width * height * bpp / 8),
buffers(count * oneSize),
surfaces(count)
{
for(int i = 0; i < count; ++i)
{
mfxFrameSurface1 &surface = surfaces[i];
uint8_t * dataPtr = buffers + oneSize * i;
memset(&surface, 0, sizeof(mfxFrameSurface1));
surface.Info = frameInfo;
surface.Data.Y = dataPtr;
surface.Data.UV = dataPtr + width * height;
surface.Data.PitchLow = width & 0xFFFF;
surface.Data.PitchHigh = (width >> 16) & 0xFFFF;
DBG(cout << "allocate surface " << (void*)&surface << ", Y = " << (void*)dataPtr << " (" << width << "x" << height << ")" << endl);
}
DBG(cout << "Allocated: " << endl
<< "- surface data: " << buffers.size() << " bytes" << endl
<< "- surface headers: " << surfaces.size() * sizeof(mfxFrameSurface1) << " bytes" << endl);
}
SurfacePool::~SurfacePool()
{
}
mfxFrameSurface1 *SurfacePool::getFreeSurface()
{
for(std::vector<mfxFrameSurface1>::iterator i = surfaces.begin(); i != surfaces.end(); ++i)
if (!i->Data.Locked)
return &(*i);
return 0;
}
//==================================================================================================
ReadBitstream::ReadBitstream(const char *filename, size_t maxSize) : drain(false)
{
input.open(filename, std::ios::in | std::ios::binary);
DBG(cout << "Open " << filename << " -> " << input.is_open() << std::endl);
memset(&stream, 0, sizeof(stream));
stream.MaxLength = (mfxU32)maxSize;
stream.Data = new mfxU8[stream.MaxLength];
CV_Assert(stream.Data);
}
ReadBitstream::~ReadBitstream()
{
delete[] stream.Data;
}
bool ReadBitstream::isOpened() const
{
return input.is_open();
}
bool ReadBitstream::isDone() const
{
return input.eof();
}
bool ReadBitstream::read()
{
memmove(stream.Data, stream.Data + stream.DataOffset, stream.DataLength);
stream.DataOffset = 0;
input.read((char*)(stream.Data + stream.DataLength), stream.MaxLength - stream.DataLength);
if (input.eof() || input.good())
{
mfxU32 bytesRead = (mfxU32)input.gcount();
if (bytesRead > 0)
{
stream.DataLength += bytesRead;
DBG(cout << "read " << bytesRead << " bytes" << endl);
return true;
}
}
return false;
}
//==================================================================================================
WriteBitstream::WriteBitstream(const char * filename, size_t maxSize)
{
output.open(filename, std::ios::out | std::ios::binary);
DBG(cout << "BS Open " << filename << " -> " << output.is_open() << std::endl);
memset(&stream, 0, sizeof(stream));
stream.MaxLength = (mfxU32)maxSize;
stream.Data = new mfxU8[stream.MaxLength];
DBG(cout << "BS Allocate " << maxSize << " bytes (" << ((float)maxSize / (1 << 20)) << " Mb)" << endl);
CV_Assert(stream.Data);
}
WriteBitstream::~WriteBitstream()
{
delete[] stream.Data;
}
bool WriteBitstream::write()
{
output.write((char*)(stream.Data + stream.DataOffset), stream.DataLength);
stream.DataLength = 0;
return output.good();
}
bool WriteBitstream::isOpened() const
{
return output.is_open();
}
//==================================================================================================