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opencv/modules/core/src/va_intel.cpp

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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.
// Copyright (C) 2015, Itseez, Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
#include "precomp.hpp"
#ifdef HAVE_VA
# include <va/va.h>
#else // HAVE_VA
# define NO_VA_SUPPORT_ERROR CV_Error(cv::Error::StsBadFunc, "OpenCV was build without VA support (libva)")
#endif // HAVE_VA
using namespace cv;
////////////////////////////////////////////////////////////////////////
// CL-VA Interoperability
#ifdef HAVE_OPENCL
# include "opencv2/core/opencl/runtime/opencl_core.hpp"
# include "opencv2/core.hpp"
# include "opencv2/core/ocl.hpp"
# include "opencl_kernels_core.hpp"
#endif // HAVE_OPENCL
#if defined(HAVE_VA_INTEL) && defined(HAVE_OPENCL)
# include <CL/va_ext.h>
#endif // HAVE_VA_INTEL && HAVE_OPENCL
namespace cv { namespace va_intel {
#if defined(HAVE_VA_INTEL) && defined(HAVE_OPENCL)
static clGetDeviceIDsFromVA_APIMediaAdapterINTEL_fn clGetDeviceIDsFromVA_APIMediaAdapterINTEL = NULL;
static clCreateFromVA_APIMediaSurfaceINTEL_fn clCreateFromVA_APIMediaSurfaceINTEL = NULL;
static clEnqueueAcquireVA_APIMediaSurfacesINTEL_fn clEnqueueAcquireVA_APIMediaSurfacesINTEL = NULL;
static clEnqueueReleaseVA_APIMediaSurfacesINTEL_fn clEnqueueReleaseVA_APIMediaSurfacesINTEL = NULL;
static bool contextInitialized = false;
#endif // HAVE_VA_INTEL && HAVE_OPENCL
namespace ocl {
Context& initializeContextFromVA(VADisplay display, bool tryInterop)
{
(void)display; (void)tryInterop;
#if !defined(HAVE_VA)
NO_VA_SUPPORT_ERROR;
#else // !HAVE_VA
# if (defined(HAVE_VA_INTEL) && defined(HAVE_OPENCL))
contextInitialized = false;
if (tryInterop)
{
cl_uint numPlatforms;
cl_int status = clGetPlatformIDs(0, NULL, &numPlatforms);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Can't get number of platforms");
if (numPlatforms == 0)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: No available platforms");
std::vector<cl_platform_id> platforms(numPlatforms);
status = clGetPlatformIDs(numPlatforms, &platforms[0], NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Can't get platform Id list");
// For CL-VA interop, we must find platform/device with "cl_intel_va_api_media_sharing" extension.
// With standard initialization procedure, we should examine platform extension string for that.
// But in practice, the platform ext string doesn't contain it, while device ext string does.
// Follow Intel procedure (see tutorial), we should obtain device IDs by extension call.
// Note that we must obtain function pointers using specific platform ID, and can't provide pointers in advance.
// So, we iterate and select the first platform, for which we got non-NULL pointers, device, and CL context.
int found = -1;
cl_context context = 0;
cl_device_id device = 0;
for (int i = 0; i < (int)numPlatforms; ++i)
{
// Get extension function pointers
clGetDeviceIDsFromVA_APIMediaAdapterINTEL = (clGetDeviceIDsFromVA_APIMediaAdapterINTEL_fn)
clGetExtensionFunctionAddressForPlatform(platforms[i], "clGetDeviceIDsFromVA_APIMediaAdapterINTEL");
clCreateFromVA_APIMediaSurfaceINTEL = (clCreateFromVA_APIMediaSurfaceINTEL_fn)
clGetExtensionFunctionAddressForPlatform(platforms[i], "clCreateFromVA_APIMediaSurfaceINTEL");
clEnqueueAcquireVA_APIMediaSurfacesINTEL = (clEnqueueAcquireVA_APIMediaSurfacesINTEL_fn)
clGetExtensionFunctionAddressForPlatform(platforms[i], "clEnqueueAcquireVA_APIMediaSurfacesINTEL");
clEnqueueReleaseVA_APIMediaSurfacesINTEL = (clEnqueueReleaseVA_APIMediaSurfacesINTEL_fn)
clGetExtensionFunctionAddressForPlatform(platforms[i], "clEnqueueReleaseVA_APIMediaSurfacesINTEL");
if (((void*)clGetDeviceIDsFromVA_APIMediaAdapterINTEL == NULL) ||
((void*)clCreateFromVA_APIMediaSurfaceINTEL == NULL) ||
((void*)clEnqueueAcquireVA_APIMediaSurfacesINTEL == NULL) ||
((void*)clEnqueueReleaseVA_APIMediaSurfacesINTEL == NULL))
{
continue;
}
// Query device list
cl_uint numDevices = 0;
status = clGetDeviceIDsFromVA_APIMediaAdapterINTEL(platforms[i], CL_VA_API_DISPLAY_INTEL, display,
CL_PREFERRED_DEVICES_FOR_VA_API_INTEL, 0, NULL, &numDevices);
if ((status != CL_SUCCESS) || !(numDevices > 0))
continue;
numDevices = 1; // initializeContextFromHandle() expects only 1 device
status = clGetDeviceIDsFromVA_APIMediaAdapterINTEL(platforms[i], CL_VA_API_DISPLAY_INTEL, display,
CL_PREFERRED_DEVICES_FOR_VA_API_INTEL, numDevices, &device, NULL);
if (status != CL_SUCCESS)
continue;
// Creating CL-VA media sharing OpenCL context
cl_context_properties props[] = {
CL_CONTEXT_VA_API_DISPLAY_INTEL, (cl_context_properties) display,
CL_CONTEXT_INTEROP_USER_SYNC, CL_FALSE, // no explicit sync required
0
};
context = clCreateContext(props, numDevices, &device, NULL, NULL, &status);
if (status != CL_SUCCESS)
{
clReleaseDevice(device);
}
else
{
found = i;
break;
}
}
if (found >= 0)
{
contextInitialized = true;
Context& ctx = Context::getDefault(false);
initializeContextFromHandle(ctx, platforms[found], context, device);
return ctx;
}
}
# endif // HAVE_VA_INTEL && HAVE_OPENCL
{
Context& ctx = Context::getDefault(true);
return ctx;
}
#endif // !HAVE_VA
}
#if defined(HAVE_VA_INTEL) && defined(HAVE_OPENCL)
static bool ocl_convert_nv12_to_bgr(cl_mem clImageY, cl_mem clImageUV, cl_mem clBuffer, int step, int cols, int rows)
{
ocl::Kernel k;
k.create("YUV2BGR_NV12_8u", cv::ocl::core::cvtclr_dx_oclsrc, "");
if (k.empty())
return false;
k.args(clImageY, clImageUV, clBuffer, step, cols, rows);
size_t globalsize[] = { (size_t)cols, (size_t)rows };
return k.run(2, globalsize, 0, false);
}
static bool ocl_convert_bgr_to_nv12(cl_mem clBuffer, int step, int cols, int rows, cl_mem clImageY, cl_mem clImageUV)
{
ocl::Kernel k;
k.create("BGR2YUV_NV12_8u", cv::ocl::core::cvtclr_dx_oclsrc, "");
if (k.empty())
return false;
k.args(clBuffer, step, cols, rows, clImageY, clImageUV);
size_t globalsize[] = { (size_t)cols, (size_t)rows };
return k.run(2, globalsize, 0, false);
}
#endif // HAVE_VA_INTEL && HAVE_OPENCL
} // namespace cv::va_intel::ocl
#if defined(HAVE_VA)
const int NCHANNELS = 3;
static void copy_convert_nv12_to_bgr(const VAImage& image, const unsigned char* buffer, Mat& bgr)
{
const float d1 = 16.0f;
const float d2 = 128.0f;
static const float coeffs[5] =
{
1.163999557f,
2.017999649f,
-0.390999794f,
-0.812999725f,
1.5959997177f
};
const size_t srcOffsetY = image.offsets[0];
const size_t srcOffsetUV = image.offsets[1];
const size_t srcStepY = image.pitches[0];
const size_t srcStepUV = image.pitches[1];
const size_t dstStep = bgr.step;
const unsigned char* srcY0 = buffer + srcOffsetY;
const unsigned char* srcUV = buffer + srcOffsetUV;
unsigned char* dst0 = bgr.data;
for (int y = 0; y < bgr.rows; y += 2)
{
const unsigned char* srcY1 = srcY0 + srcStepY;
unsigned char *dst1 = dst0 + dstStep;
for (int x = 0; x < bgr.cols; x += 2)
{
float Y0 = float(srcY0[x+0]);
float Y1 = float(srcY0[x+1]);
float Y2 = float(srcY1[x+0]);
float Y3 = float(srcY1[x+1]);
float U = float(srcUV[2*(x/2)+0]) - d2;
float V = float(srcUV[2*(x/2)+1]) - d2;
Y0 = std::max(0.0f, Y0 - d1) * coeffs[0];
Y1 = std::max(0.0f, Y1 - d1) * coeffs[0];
Y2 = std::max(0.0f, Y2 - d1) * coeffs[0];
Y3 = std::max(0.0f, Y3 - d1) * coeffs[0];
float ruv = coeffs[4]*V;
float guv = coeffs[3]*V + coeffs[2]*U;
float buv = coeffs[1]*U;
dst0[(x+0)*NCHANNELS+0] = saturate_cast<unsigned char>(Y0 + buv);
dst0[(x+0)*NCHANNELS+1] = saturate_cast<unsigned char>(Y0 + guv);
dst0[(x+0)*NCHANNELS+2] = saturate_cast<unsigned char>(Y0 + ruv);
dst0[(x+1)*NCHANNELS+0] = saturate_cast<unsigned char>(Y1 + buv);
dst0[(x+1)*NCHANNELS+1] = saturate_cast<unsigned char>(Y1 + guv);
dst0[(x+1)*NCHANNELS+2] = saturate_cast<unsigned char>(Y1 + ruv);
dst1[(x+0)*NCHANNELS+0] = saturate_cast<unsigned char>(Y2 + buv);
dst1[(x+0)*NCHANNELS+1] = saturate_cast<unsigned char>(Y2 + guv);
dst1[(x+0)*NCHANNELS+2] = saturate_cast<unsigned char>(Y2 + ruv);
dst1[(x+1)*NCHANNELS+0] = saturate_cast<unsigned char>(Y3 + buv);
dst1[(x+1)*NCHANNELS+1] = saturate_cast<unsigned char>(Y3 + guv);
dst1[(x+1)*NCHANNELS+2] = saturate_cast<unsigned char>(Y3 + ruv);
}
srcY0 = srcY1 + srcStepY;
srcUV += srcStepUV;
dst0 = dst1 + dstStep;
}
}
static void copy_convert_bgr_to_nv12(const VAImage& image, const Mat& bgr, unsigned char* buffer)
{
const float d1 = 16.0f;
const float d2 = 128.0f;
static const float coeffs[8] =
{
0.256999969f, 0.50399971f, 0.09799957f, -0.1479988098f,
-0.2909994125f, 0.438999176f, -0.3679990768f, -0.0709991455f
};
const size_t dstOffsetY = image.offsets[0];
const size_t dstOffsetUV = image.offsets[1];
const size_t dstStepY = image.pitches[0];
const size_t dstStepUV = image.pitches[1];
const size_t srcStep = bgr.step;
const unsigned char* src0 = bgr.data;
unsigned char* dstY0 = buffer + dstOffsetY;
unsigned char* dstUV = buffer + dstOffsetUV;
for (int y = 0; y < bgr.rows; y += 2)
{
const unsigned char *src1 = src0 + srcStep;
unsigned char* dstY1 = dstY0 + dstStepY;
for (int x = 0; x < bgr.cols; x += 2)
{
float B0 = float(src0[(x+0)*NCHANNELS+0]);
float G0 = float(src0[(x+0)*NCHANNELS+1]);
float R0 = float(src0[(x+0)*NCHANNELS+2]);
float B1 = float(src0[(x+1)*NCHANNELS+0]);
float G1 = float(src0[(x+1)*NCHANNELS+1]);
float R1 = float(src0[(x+1)*NCHANNELS+2]);
float B2 = float(src1[(x+0)*NCHANNELS+0]);
float G2 = float(src1[(x+0)*NCHANNELS+1]);
float R2 = float(src1[(x+0)*NCHANNELS+2]);
float B3 = float(src1[(x+1)*NCHANNELS+0]);
float G3 = float(src1[(x+1)*NCHANNELS+1]);
float R3 = float(src1[(x+1)*NCHANNELS+2]);
float Y0 = coeffs[0]*R0 + coeffs[1]*G0 + coeffs[2]*B0 + d1;
float Y1 = coeffs[0]*R1 + coeffs[1]*G1 + coeffs[2]*B1 + d1;
float Y2 = coeffs[0]*R2 + coeffs[1]*G2 + coeffs[2]*B2 + d1;
float Y3 = coeffs[0]*R3 + coeffs[1]*G3 + coeffs[2]*B3 + d1;
float U = coeffs[3]*R0 + coeffs[4]*G0 + coeffs[5]*B0 + d2;
float V = coeffs[5]*R0 + coeffs[6]*G0 + coeffs[7]*B0 + d2;
dstY0[x+0] = saturate_cast<unsigned char>(Y0);
dstY0[x+1] = saturate_cast<unsigned char>(Y1);
dstY1[x+0] = saturate_cast<unsigned char>(Y2);
dstY1[x+1] = saturate_cast<unsigned char>(Y3);
dstUV[2*(x/2)+0] = saturate_cast<unsigned char>(U);
dstUV[2*(x/2)+1] = saturate_cast<unsigned char>(V);
}
src0 = src1 + srcStep;
dstY0 = dstY1 + dstStepY;
dstUV += dstStepUV;
}
}
#endif // HAVE_VA
void convertToVASurface(VADisplay display, InputArray src, VASurfaceID surface, Size size)
{
(void)display; (void)src; (void)surface; (void)size;
#if !defined(HAVE_VA)
NO_VA_SUPPORT_ERROR;
#else // !HAVE_VA
const int stype = CV_8UC3;
int srcType = src.type();
CV_Assert(srcType == stype);
Size srcSize = src.size();
CV_Assert(srcSize.width == size.width && srcSize.height == size.height);
# if (defined(HAVE_VA_INTEL) && defined(HAVE_OPENCL))
if (contextInitialized)
{
UMat u = src.getUMat();
// TODO Add support for roi
CV_Assert(u.offset == 0);
CV_Assert(u.isContinuous());
cl_mem clBuffer = (cl_mem)u.handle(ACCESS_READ);
using namespace cv::ocl;
Context& ctx = Context::getDefault();
cl_context context = (cl_context)ctx.ptr();
cl_int status = 0;
cl_mem clImageY = clCreateFromVA_APIMediaSurfaceINTEL(context, CL_MEM_WRITE_ONLY, &surface, 0, &status);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clCreateFromVA_APIMediaSurfaceINTEL failed (Y plane)");
cl_mem clImageUV = clCreateFromVA_APIMediaSurfaceINTEL(context, CL_MEM_WRITE_ONLY, &surface, 1, &status);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clCreateFromVA_APIMediaSurfaceINTEL failed (UV plane)");
cl_command_queue q = (cl_command_queue)Queue::getDefault().ptr();
cl_mem images[2] = { clImageY, clImageUV };
status = clEnqueueAcquireVA_APIMediaSurfacesINTEL(q, 2, images, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueAcquireVA_APIMediaSurfacesINTEL failed");
if (!ocl::ocl_convert_bgr_to_nv12(clBuffer, (int)u.step[0], u.cols, u.rows, clImageY, clImageUV))
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: ocl_convert_bgr_to_nv12 failed");
clEnqueueReleaseVA_APIMediaSurfacesINTEL(q, 2, images, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueReleaseVA_APIMediaSurfacesINTEL failed");
status = clFinish(q); // TODO Use events
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clFinish failed");
status = clReleaseMemObject(clImageY); // TODO RAII
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clReleaseMem failed (Y plane)");
status = clReleaseMemObject(clImageUV);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clReleaseMem failed (UV plane)");
}
else
# endif // HAVE_VA_INTEL && HAVE_OPENCL
{
Mat m = src.getMat();
// TODO Add support for roi
CV_Assert(m.data == m.datastart);
CV_Assert(m.isContinuous());
VAStatus status = 0;
status = vaSyncSurface(display, surface);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaSyncSurface failed");
VAImage image;
status = vaDeriveImage(display, surface, &image);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaDeriveImage failed");
unsigned char* buffer = 0;
status = vaMapBuffer(display, image.buf, (void **)&buffer);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaMapBuffer failed");
CV_Assert(image.format.fourcc == VA_FOURCC_NV12);
copy_convert_bgr_to_nv12(image, m, buffer);
status = vaUnmapBuffer(display, image.buf);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaUnmapBuffer failed");
status = vaDestroyImage(display, image.image_id);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaDestroyImage failed");
}
#endif // !HAVE_VA
}
void convertFromVASurface(VADisplay display, VASurfaceID surface, Size size, OutputArray dst)
{
(void)display; (void)surface; (void)dst; (void)size;
#if !defined(HAVE_VA)
NO_VA_SUPPORT_ERROR;
#else // !HAVE_VA
const int dtype = CV_8UC3;
// TODO Need to specify ACCESS_WRITE here somehow to prevent useless data copying!
dst.create(size, dtype);
# if (defined(HAVE_VA_INTEL) && defined(HAVE_OPENCL))
if (contextInitialized)
{
UMat u = dst.getUMat();
// TODO Add support for roi
CV_Assert(u.offset == 0);
CV_Assert(u.isContinuous());
cl_mem clBuffer = (cl_mem)u.handle(ACCESS_WRITE);
using namespace cv::ocl;
Context& ctx = Context::getDefault();
cl_context context = (cl_context)ctx.ptr();
cl_int status = 0;
cl_mem clImageY = clCreateFromVA_APIMediaSurfaceINTEL(context, CL_MEM_READ_ONLY, &surface, 0, &status);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clCreateFromVA_APIMediaSurfaceINTEL failed (Y plane)");
cl_mem clImageUV = clCreateFromVA_APIMediaSurfaceINTEL(context, CL_MEM_READ_ONLY, &surface, 1, &status);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clCreateFromVA_APIMediaSurfaceINTEL failed (UV plane)");
cl_command_queue q = (cl_command_queue)Queue::getDefault().ptr();
cl_mem images[2] = { clImageY, clImageUV };
status = clEnqueueAcquireVA_APIMediaSurfacesINTEL(q, 2, images, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueAcquireVA_APIMediaSurfacesINTEL failed");
if (!ocl::ocl_convert_nv12_to_bgr(clImageY, clImageUV, clBuffer, (int)u.step[0], u.cols, u.rows))
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: ocl_convert_nv12_to_bgr failed");
status = clEnqueueReleaseVA_APIMediaSurfacesINTEL(q, 2, images, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueReleaseVA_APIMediaSurfacesINTEL failed");
status = clFinish(q); // TODO Use events
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clFinish failed");
status = clReleaseMemObject(clImageY); // TODO RAII
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clReleaseMem failed (Y plane)");
status = clReleaseMemObject(clImageUV);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clReleaseMem failed (UV plane)");
}
else
# endif // HAVE_VA_INTEL && HAVE_OPENCL
{
Mat m = dst.getMat();
// TODO Add support for roi
CV_Assert(m.data == m.datastart);
CV_Assert(m.isContinuous());
VAStatus status = 0;
status = vaSyncSurface(display, surface);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaSyncSurface failed");
VAImage image;
status = vaDeriveImage(display, surface, &image);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaDeriveImage failed");
unsigned char* buffer = 0;
status = vaMapBuffer(display, image.buf, (void **)&buffer);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaMapBuffer failed");
CV_Assert(image.format.fourcc == VA_FOURCC_NV12);
copy_convert_nv12_to_bgr(image, buffer, m);
status = vaUnmapBuffer(display, image.buf);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaUnmapBuffer failed");
status = vaDestroyImage(display, image.image_id);
if (status != VA_STATUS_SUCCESS)
CV_Error(cv::Error::StsError, "VA-API: vaDestroyImage failed");
}
#endif // !HAVE_VA
}
}} // namespace cv::va_intel