1 files changed, 102 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/d3d/d3d11/StreamProducerNV12.cpp b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/StreamProducerNV12.cpp
new file mode 100755
index 000000000..fbbdf552a
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/StreamProducerNV12.cpp
@@ -0,0 +1,102 @@
+//
+// 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::Error(EGL_BAD_PARAMETER, "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::Error(EGL_BAD_PARAMETER, "Texture format not DXGI_FORMAT_NV12");
+    }
+    if (desc.Width < 1 || desc.Height < 1)
+    {
+        return egl::Error(EGL_BAD_PARAMETER, "Texture is of size 0");
+    }
+    if ((desc.Width % 2) != 0 || (desc.Height % 2) != 0)
+    {
+        return egl::Error(EGL_BAD_PARAMETER, "Texture dimensions are not even");
+    }
+    return egl::Error(EGL_SUCCESS);
+}
+
+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