gpu: Compositor management of GpuMemoryBuffer instances.

content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "content/common/android/surface_texture_lookup.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace content {
 
 GpuMemoryBufferImplSurfaceTexture::GpuMemoryBufferImplSurfaceTexture(
     const gfx::Size& size,
-    unsigned internalformat,
+    Format format,
     const DestructionCallback& callback,
     const gfx::SurfaceTextureId& surface_texture_id,
     ANativeWindow* native_window)
-    : GpuMemoryBufferImpl(size, internalformat, callback),
+    : GpuMemoryBufferImpl(size, format, callback),
       surface_texture_id_(surface_texture_id),
       native_window_(native_window),
       stride_(0u) {
 }
 
 GpuMemoryBufferImplSurfaceTexture::~GpuMemoryBufferImplSurfaceTexture() {
   ANativeWindow_release(native_window_);
 }
 
 // static
 scoped_ptr<GpuMemoryBufferImpl>
 GpuMemoryBufferImplSurfaceTexture::CreateFromHandle(
     const gfx::GpuMemoryBufferHandle& handle,
     const gfx::Size& size,
-    unsigned internalformat,
+    Format format,
     const DestructionCallback& callback) {
-  DCHECK(IsFormatSupported(internalformat));
+  DCHECK(IsFormatSupported(format));
 
   ANativeWindow* native_window =
       SurfaceTextureLookup::GetInstance()->AcquireNativeWidget(
           handle.surface_texture_id.primary_id,
           handle.surface_texture_id.secondary_id);
   if (!native_window)
     return scoped_ptr<GpuMemoryBufferImpl>();
 
   ANativeWindow_setBuffersGeometry(
-      native_window, size.width(), size.height(), WindowFormat(internalformat));
+      native_window, size.width(), size.height(), WindowFormat(format));
 
   return make_scoped_ptr<GpuMemoryBufferImpl>(
-      new GpuMemoryBufferImplSurfaceTexture(size,
-                                            internalformat,
-                                            callback,
-                                            handle.surface_texture_id,
-                                            native_window));
+      new GpuMemoryBufferImplSurfaceTexture(
+          size, format, callback, handle.surface_texture_id, native_window));
 }
 
 // static
-bool GpuMemoryBufferImplSurfaceTexture::IsFormatSupported(
-    unsigned internalformat) {
-  switch (internalformat) {
-    case GL_RGBA8_OES:
+bool GpuMemoryBufferImplSurfaceTexture::IsFormatSupported(Format format) {
+  switch (format) {
+    case RGBA_8888:
       return true;
-    default:
+    case RGBX_8888:
+    case BGRA_8888
       return false;
   }
+
+  NOTREACHED();
+  return false;
 }
 
 // static
-bool GpuMemoryBufferImplSurfaceTexture::IsUsageSupported(unsigned usage) {
+bool GpuMemoryBufferImplSurfaceTexture::IsUsageSupported(
+    Usage usage) {
   switch (usage) {
-    case GL_IMAGE_MAP_CHROMIUM:
+    case MAP:
       return true;
-    default:
+    case SCANOUT:
       return false;
   }
+
+  NOTREACHED();
+  return false;
 }
 
 // static
-bool GpuMemoryBufferImplSurfaceTexture::IsConfigurationSupported(
-    unsigned internalformat,
-    unsigned usage) {
-  return IsFormatSupported(internalformat) && IsUsageSupported(usage);
+bool GpuMemoryBufferImplSurfaceTexture::IsConfigurationSupported(Format format,
+                                                                 Usage usage) {
+  return IsFormatSupported(format) && IsUsageSupported(usage);
 }
 
 // static
-int GpuMemoryBufferImplSurfaceTexture::WindowFormat(unsigned internalformat) {
-  switch (internalformat) {
-    case GL_RGBA8_OES:
+int GpuMemoryBufferImplSurfaceTexture::WindowFormat(Format format) {
+  switch (format) {
+    case RGBA_8888:
       return WINDOW_FORMAT_RGBA_8888;
-    default:
-      NOTREACHED();
-      return 0;
+    case RGBX_8888:
+    case BGRA_8888:
+      break;
   }
+
+  NOTREACHED();
+  return 0;
 }
 
 void* GpuMemoryBufferImplSurfaceTexture::Map() {
   TRACE_EVENT0("gpu", "GpuMemoryBufferImplSurfaceTexture::Map");
 
   DCHECK(!mapped_);
   DCHECK(native_window_);
   ANativeWindow_Buffer buffer;
   int status = ANativeWindow_lock(native_window_, &buffer, NULL);
   if (status) {
     VLOG(1) << "ANativeWindow_lock failed with error code: " << status;
     return NULL;
   }
 
   DCHECK_LE(size_.width(), buffer.stride);
-  stride_ = buffer.stride * BytesPerPixel(internalformat_);
+  stride_ = buffer.stride * BytesPerPixel(format_);
   mapped_ = true;
   return buffer.bits;
 }
 
 void GpuMemoryBufferImplSurfaceTexture::Unmap() {
   TRACE_EVENT0("gpu", "GpuMemoryBufferImplSurfaceTexture::Unmap");
 
   DCHECK(mapped_);
   ANativeWindow_unlockAndPost(native_window_);
   mapped_ = false;
 }
 
-uint32 GpuMemoryBufferImplSurfaceTexture::GetStride() const { return stride_; }
+uint32 GpuMemoryBufferImplSurfaceTexture::GetStride() const {
+  return stride_;
+}
 
 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplSurfaceTexture::GetHandle()
     const {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::SURFACE_TEXTURE_BUFFER;
   handle.surface_texture_id = surface_texture_id_;
   return handle;
 }
 
 }  // namespace content