gecko-dev/gfx/webrender_bindings/RenderMacIOSurfaceTextureHo...

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3.9 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "RenderMacIOSurfaceTextureHostOGL.h"
#include "GLContextCGL.h"
#include "mozilla/gfx/Logging.h"
#include "ScopedGLHelpers.h"
namespace mozilla {
namespace wr {
static CGLError
CreateTextureForPlane(uint8_t aPlaneID, gl::GLContext* aGL, MacIOSurface* aSurface, GLuint* aTexture)
{
MOZ_ASSERT(aGL && aSurface && aTexture);
aGL->fGenTextures(1, aTexture);
aGL->fActiveTexture(LOCAL_GL_TEXTURE0);
aGL->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, *aTexture);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
CGLError result = kCGLNoError;
gfx::SurfaceFormat readFormat = gfx::SurfaceFormat::UNKNOWN;
result = aSurface->CGLTexImageIOSurface2D(aGL,
gl::GLContextCGL::Cast(aGL)->GetCGLContext(),
aPlaneID,
&readFormat);
// If this is a yuv format, the Webrender only supports YUV422 interleaving format.
MOZ_ASSERT(aSurface->GetFormat() != gfx::SurfaceFormat::YUV422 || readFormat == gfx::SurfaceFormat::YUV422);
return result;
}
RenderMacIOSurfaceTextureHostOGL::RenderMacIOSurfaceTextureHostOGL(MacIOSurface* aSurface)
: mSurface(aSurface)
, mTextureHandles{ 0, 0, 0 }
{
MOZ_COUNT_CTOR_INHERITED(RenderMacIOSurfaceTextureHostOGL, RenderTextureHostOGL);
}
RenderMacIOSurfaceTextureHostOGL::~RenderMacIOSurfaceTextureHostOGL()
{
MOZ_COUNT_DTOR_INHERITED(RenderMacIOSurfaceTextureHostOGL, RenderTextureHostOGL);
DeleteTextureHandle();
}
GLuint
RenderMacIOSurfaceTextureHostOGL::GetGLHandle(uint8_t aChannelIndex) const
{
MOZ_ASSERT(mSurface);
MOZ_ASSERT((mSurface->GetPlaneCount() == 0) ? (aChannelIndex == mSurface->GetPlaneCount())
: (aChannelIndex < mSurface->GetPlaneCount()));
return mTextureHandles[aChannelIndex];
}
gfx::IntSize
RenderMacIOSurfaceTextureHostOGL::GetSize(uint8_t aChannelIndex) const
{
MOZ_ASSERT(mSurface);
MOZ_ASSERT((mSurface->GetPlaneCount() == 0) ? (aChannelIndex == mSurface->GetPlaneCount())
: (aChannelIndex < mSurface->GetPlaneCount()));
if (!mSurface) {
return gfx::IntSize();
}
return gfx::IntSize(mSurface->GetDevicePixelWidth(aChannelIndex),
mSurface->GetDevicePixelHeight(aChannelIndex));
}
bool
RenderMacIOSurfaceTextureHostOGL::Lock()
{
if (!mSurface || !mGL || !mGL->MakeCurrent()) {
return false;
}
if (!mTextureHandles[0]) {
MOZ_ASSERT(gl::GLContextCGL::Cast(mGL.get())->GetCGLContext());
// The result of GetPlaneCount() is 0 for single plane format, but it will
// be 2 if the format has 2 planar data.
CreateTextureForPlane(0, mGL, mSurface, &(mTextureHandles[0]));
for (size_t i = 1; i < mSurface->GetPlaneCount(); ++i) {
CreateTextureForPlane(i, mGL, mSurface, &(mTextureHandles[i]));
}
}
return true;
}
void
RenderMacIOSurfaceTextureHostOGL::Unlock()
{
}
void
RenderMacIOSurfaceTextureHostOGL::SetGLContext(gl::GLContext* aContext)
{
if (mGL.get() != aContext) {
// release the texture handle in the previous gl context
DeleteTextureHandle();
mGL = aContext;
}
}
void
RenderMacIOSurfaceTextureHostOGL::DeleteTextureHandle()
{
if (mTextureHandles[0] != 0 && mGL && mGL->MakeCurrent()) {
// Calling glDeleteTextures on 0 isn't an error. So, just make them a single
// call.
mGL->fDeleteTextures(3, mTextureHandles);
for (size_t i = 0; i < 3; ++i) {
mTextureHandles[i] = 0;
}
}
}
} // namespace wr
} // namespace mozilla