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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
/* 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 "SharedSurfaceIO.h"
#include "GLContextCGL.h"
#include "MozFramebuffer.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/gfx/MacIOSurface.h"
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "mozilla/layers/LayersTypes.h"
#include "ScopedGLHelpers.h"
namespace mozilla {
namespace gl {
// -
// Factory
SurfaceFactory_IOSurface::SurfaceFactory_IOSurface(GLContext& gl)
: SurfaceFactory({&gl, SharedSurfaceType::IOSurface,
layers::TextureType::MacIOSurface, true}),
mMaxDims(gfx::IntSize::Truncate(MacIOSurface::GetMaxWidth(),
MacIOSurface::GetMaxHeight())) {}
// -
// Surface
static void BackTextureWithIOSurf(GLContext* const gl, const GLuint tex,
MacIOSurface* const ioSurf) {
MOZ_ASSERT(gl->IsCurrent());
ScopedBindTexture texture(gl, tex, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_S,
LOCAL_GL_CLAMP_TO_EDGE);
gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_T,
LOCAL_GL_CLAMP_TO_EDGE);
CGLContextObj cgl = GLContextCGL::Cast(gl)->GetCGLContext();
MOZ_ASSERT(cgl);
ioSurf->CGLTexImageIOSurface2D(gl, cgl, 0);
}
/*static*/
UniquePtr<SharedSurface_IOSurface> SharedSurface_IOSurface::Create(
const SharedSurfaceDesc& desc) {
const auto& size = desc.size;
const RefPtr<MacIOSurface> ioSurf =
MacIOSurface::CreateIOSurface(size.width, size.height, true);
if (!ioSurf) {
NS_WARNING("Failed to create MacIOSurface.");
return nullptr;
}
ioSurf->SetColorSpace(desc.colorSpace);
// -
auto tex = MakeUnique<Texture>(*desc.gl);
BackTextureWithIOSurf(desc.gl, tex->name, ioSurf);
const GLenum target = LOCAL_GL_TEXTURE_RECTANGLE;
auto fb = MozFramebuffer::CreateForBacking(desc.gl, desc.size, 0, false,
target, tex->name);
if (!fb) return nullptr;
return AsUnique(
new SharedSurface_IOSurface(desc, std::move(fb), std::move(tex), ioSurf));
}
SharedSurface_IOSurface::SharedSurface_IOSurface(
const SharedSurfaceDesc& desc, UniquePtr<MozFramebuffer> fb,
UniquePtr<Texture> tex, const RefPtr<MacIOSurface>& ioSurf)
: SharedSurface(desc, std::move(fb)),
mTex(std::move(tex)),
mIOSurf(ioSurf) {}
SharedSurface_IOSurface::~SharedSurface_IOSurface() = default;
void SharedSurface_IOSurface::ProducerReleaseImpl() {
const auto& gl = mDesc.gl;
if (!gl) return;
gl->MakeCurrent();
gl->fFlush();
}
Maybe<layers::SurfaceDescriptor>
SharedSurface_IOSurface::ToSurfaceDescriptor() {
const bool isOpaque = false; // RGBA
return Some(layers::SurfaceDescriptorMacIOSurface(
mIOSurf->GetIOSurfaceID(), isOpaque, mIOSurf->GetYUVColorSpace()));
}
} // namespace gl
} // namespace mozilla
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