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//
// Copyright (c) 2016 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// StreamProducerNV12.cpp: Implements the stream producer for NV12 textures
#include "libANGLE/renderer/d3d/d3d11/StreamProducerNV12.h"
#include "common/utilities.h"
#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
namespace rx
{
StreamProducerNV12::StreamProducerNV12(Renderer11 *renderer)
: mRenderer(renderer), mTexture(nullptr), mArraySlice(0), mTextureWidth(0), mTextureHeight(0)
{
}
StreamProducerNV12::~StreamProducerNV12()
{
SafeRelease(mTexture);
}
egl::Error StreamProducerNV12::validateD3DNV12Texture(void *pointer) const
{
ID3D11Texture2D *textureD3D = static_cast<ID3D11Texture2D *>(pointer);
// Check that the texture originated from our device
ID3D11Device *device;
textureD3D->GetDevice(&device);
if (device != mRenderer->getDevice())
{
return egl::EglBadParameter() << "Texture not created on ANGLE D3D device";
}
// Get the description and validate it
D3D11_TEXTURE2D_DESC desc;
textureD3D->GetDesc(&desc);
if (desc.Format != DXGI_FORMAT_NV12)
{
return egl::EglBadParameter() << "Texture format not DXGI_FORMAT_NV12";
}
if (desc.Width < 1 || desc.Height < 1)
{
return egl::EglBadParameter() << "Texture is of size 0";
}
if ((desc.Width % 2) != 0 || (desc.Height % 2) != 0)
{
return egl::EglBadParameter() << "Texture dimensions are not even";
}
return egl::NoError();
}
void StreamProducerNV12::postD3DNV12Texture(void *pointer, const egl::AttributeMap &attributes)
{
ASSERT(pointer != nullptr);
ID3D11Texture2D *textureD3D = static_cast<ID3D11Texture2D *>(pointer);
// Check that the texture originated from our device
ID3D11Device *device;
textureD3D->GetDevice(&device);
// Get the description
D3D11_TEXTURE2D_DESC desc;
textureD3D->GetDesc(&desc);
// Release the previous texture if there is one
SafeRelease(mTexture);
mTexture = textureD3D;
mTexture->AddRef();
mTextureWidth = desc.Width;
mTextureHeight = desc.Height;
mArraySlice = static_cast<UINT>(attributes.get(EGL_D3D_TEXTURE_SUBRESOURCE_ID_ANGLE, 0));
}
egl::Stream::GLTextureDescription StreamProducerNV12::getGLFrameDescription(int planeIndex)
{
// The UV plane of NV12 textures has half the width/height of the Y plane
egl::Stream::GLTextureDescription desc;
desc.width = (planeIndex == 0) ? mTextureWidth : (mTextureWidth / 2);
desc.height = (planeIndex == 0) ? mTextureHeight : (mTextureHeight / 2);
desc.internalFormat = (planeIndex == 0) ? GL_R8 : GL_RG8;
desc.mipLevels = 0;
return desc;
}
ID3D11Texture2D *StreamProducerNV12::getD3DTexture()
{
return mTexture;
}
UINT StreamProducerNV12::getArraySlice()
{
return mArraySlice;
}
} // namespace rx
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