bool CCVideoLayerImpl::reserveTextures(const WebKit::WebVideoFrame& frame, GC3Denum format, LayerRendererChromium* layerRenderer)
{
if (frame.planes() > MaxPlanes)
return false;
int maxTextureSize = layerRenderer->capabilities().maxTextureSize;
for (unsigned plane = 0; plane < frame.planes(); ++plane) {
IntSize requiredTextureSize(frame.stride(plane), videoFrameDimension(frame.height(), plane, frame.format()));
// If the renderer cannot handle this large of a texture, return false.
// FIXME: Remove this test when tiled layers are implemented.
if (requiredTextureSize.isZero() || requiredTextureSize.width() > maxTextureSize || requiredTextureSize.height() > maxTextureSize)
return false;
if (!m_textures[plane].m_texture) {
m_textures[plane].m_texture = ManagedTexture::create(layerRenderer->renderSurfaceTextureManager());
if (!m_textures[plane].m_texture)
return false;
m_textures[plane].m_visibleSize = IntSize();
} else {
// The renderSurfaceTextureManager may have been destroyed and recreated since the last frame, so pass the new one.
// This is a no-op if the TextureManager is still around.
m_textures[plane].m_texture->setTextureManager(layerRenderer->renderSurfaceTextureManager());
}
if (m_textures[plane].m_texture->size() != requiredTextureSize)
m_textures[plane].m_visibleSize = computeVisibleSize(frame, plane);
if (!m_textures[plane].m_texture->reserve(requiredTextureSize, format))
return false;
}
return true;
}
static bool hasPaddingBytes(const WebKit::WebVideoFrame& frame, unsigned plane)
{
return frame.stride(plane) > videoFrameDimension(frame.width(), plane, frame.format());
}