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