void VideoLayerChromium::updateContentsIfDirty()
{
if (!m_contentsDirty)
return;
RenderLayerBacking* backing = static_cast<RenderLayerBacking*>(m_owner->client());
if (!backing || backing->paintingGoesToWindow())
return;
ASSERT(drawsContent());
m_skipsDraw = false;
VideoFrameChromium* frame = m_provider->getCurrentFrame();
if (!frame) {
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
m_frameFormat = frame->format();
unsigned textureFormat = determineTextureFormat(frame);
if (textureFormat == GraphicsContext3D::INVALID_VALUE) {
// FIXME: Implement other paths.
notImplemented();
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
if (frame->surfaceType() == VideoFrameChromium::TypeTexture) {
releaseCurrentFrame();
saveCurrentFrame(frame);
m_dirtyRect.setSize(FloatSize());
m_contentsDirty = false;
return;
}
// Allocate textures for planes if they are not allocated already, or
// reallocate textures that are the wrong size for the frame.
GraphicsContext3D* context = layerRendererContext();
bool texturesAllocated = allocateTexturesIfNeeded(context, frame, textureFormat);
if (!texturesAllocated) {
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
// Update texture planes.
for (unsigned plane = 0; plane < frame->planes(); plane++) {
ASSERT(frame->requiredTextureSize(plane) == m_textureSizes[plane]);
updateTexture(context, m_textures[plane], frame->requiredTextureSize(plane), textureFormat, frame->data(plane));
}
m_dirtyRect.setSize(FloatSize());
m_contentsDirty = false;
m_provider->putCurrentFrame(frame);
}
void VideoLayerChromium::updateCompositorResources(GraphicsContext3D* context)
{
if (!m_contentsDirty || !m_delegate)
return;
ASSERT(drawsContent());
m_skipsDraw = false;
VideoFrameChromium* frame = m_provider->getCurrentFrame();
if (!frame) {
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
m_frameFormat = frame->format();
GC3Denum textureFormat = determineTextureFormat(frame);
if (textureFormat == GraphicsContext3D::INVALID_VALUE) {
// FIXME: Implement other paths.
notImplemented();
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
// Allocate textures for planes if they are not allocated already, or
// reallocate textures that are the wrong size for the frame.
bool texturesReserved = reserveTextures(frame, textureFormat);
if (!texturesReserved) {
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
// Update texture planes.
for (unsigned plane = 0; plane < frame->planes(); plane++) {
Texture& texture = m_textures[plane];
ASSERT(texture.m_texture);
ASSERT(frame->requiredTextureSize(plane) == texture.m_texture->size());
updateTexture(context, texture, frame->data(plane));
}
m_dirtyRect.setSize(FloatSize());
m_contentsDirty = false;
m_provider->putCurrentFrame(frame);
}