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-rw-r--r--gfx/layers/GLImages.cpp113
1 files changed, 113 insertions, 0 deletions
diff --git a/gfx/layers/GLImages.cpp b/gfx/layers/GLImages.cpp
new file mode 100644
index 000000000..e45c3e7d6
--- /dev/null
+++ b/gfx/layers/GLImages.cpp
@@ -0,0 +1,113 @@
+
+#include "GLImages.h"
+#include "GLContext.h"
+#include "GLContextProvider.h"
+#include "ScopedGLHelpers.h"
+#include "GLImages.h"
+#include "GLBlitHelper.h"
+#include "GLReadTexImageHelper.h"
+#include "GLLibraryEGL.h"
+
+using namespace mozilla;
+using namespace mozilla::gl;
+
+namespace mozilla {
+namespace layers {
+
+static RefPtr<GLContext> sSnapshotContext;
+
+EGLImageImage::EGLImageImage(EGLImage aImage, EGLSync aSync,
+ const gfx::IntSize& aSize, const gl::OriginPos& aOrigin,
+ bool aOwns)
+ : GLImage(ImageFormat::EGLIMAGE),
+ mImage(aImage),
+ mSync(aSync),
+ mSize(aSize),
+ mPos(aOrigin),
+ mOwns(aOwns)
+{
+}
+
+EGLImageImage::~EGLImageImage()
+{
+ if (!mOwns) {
+ return;
+ }
+
+ if (mImage) {
+ sEGLLibrary.fDestroyImage(EGL_DISPLAY(), mImage);
+ mImage = nullptr;
+ }
+
+ if (mSync) {
+ sEGLLibrary.fDestroySync(EGL_DISPLAY(), mSync);
+ mSync = nullptr;
+ }
+}
+
+already_AddRefed<gfx::SourceSurface>
+GLImage::GetAsSourceSurface()
+{
+ MOZ_ASSERT(NS_IsMainThread(), "Should be on the main thread");
+
+ if (!sSnapshotContext) {
+ nsCString discardFailureId;
+ sSnapshotContext = GLContextProvider::CreateHeadless(CreateContextFlags::NONE,
+ &discardFailureId);
+ if (!sSnapshotContext) {
+ NS_WARNING("Failed to create snapshot GLContext");
+ return nullptr;
+ }
+ }
+
+ sSnapshotContext->MakeCurrent();
+ ScopedTexture scopedTex(sSnapshotContext);
+ ScopedBindTexture boundTex(sSnapshotContext, scopedTex.Texture());
+
+ gfx::IntSize size = GetSize();
+ sSnapshotContext->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA,
+ size.width, size.height, 0,
+ LOCAL_GL_RGBA,
+ LOCAL_GL_UNSIGNED_BYTE,
+ nullptr);
+
+ ScopedFramebufferForTexture autoFBForTex(sSnapshotContext, scopedTex.Texture());
+ if (!autoFBForTex.IsComplete()) {
+ gfxCriticalError() << "GetAsSourceSurface: ScopedFramebufferForTexture failed.";
+ return nullptr;
+ }
+
+ const gl::OriginPos destOrigin = gl::OriginPos::TopLeft;
+
+ if (!sSnapshotContext->BlitHelper()->BlitImageToFramebuffer(this, size,
+ autoFBForTex.FB(),
+ destOrigin))
+ {
+ return nullptr;
+ }
+
+ RefPtr<gfx::DataSourceSurface> source =
+ gfx::Factory::CreateDataSourceSurface(size, gfx::SurfaceFormat::B8G8R8A8);
+ if (NS_WARN_IF(!source)) {
+ return nullptr;
+ }
+
+ ScopedBindFramebuffer bind(sSnapshotContext, autoFBForTex.FB());
+ ReadPixelsIntoDataSurface(sSnapshotContext, source);
+ return source.forget();
+}
+
+#ifdef MOZ_WIDGET_ANDROID
+SurfaceTextureImage::SurfaceTextureImage(gl::AndroidSurfaceTexture* aSurfTex,
+ const gfx::IntSize& aSize,
+ gl::OriginPos aOriginPos)
+ : GLImage(ImageFormat::SURFACE_TEXTURE),
+ mSurfaceTexture(aSurfTex),
+ mSize(aSize),
+ mOriginPos(aOriginPos)
+{
+}
+#endif
+
+} // namespace layers
+} // namespace mozilla