Index: ui/gl/android/gl_image_stream.cc |
diff --git a/ui/gl/android/gl_image_stream.cc b/ui/gl/android/gl_image_stream.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f57b1bedfd055f6b9e67dd3a66dbd0ee6e5e43e5 |
--- /dev/null |
+++ b/ui/gl/android/gl_image_stream.cc |
@@ -0,0 +1,88 @@ |
+// Copyright (c) 2013 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 "ui/gl/android/gl_image_stream.h" |
+ |
+#include "base/bind.h" |
+#include "ui/gfx/size.h" |
+#include "ui/gl/android/surface_texture_bridge.h" |
+#include "ui/gl/gl_bindings.h" |
+ |
+namespace gfx { |
+ |
+GLImageStream::GLImageStream() |
+ : has_updated_(false), |
+ weak_factory_(this) { |
+ memset(¤t_matrix_, 0, sizeof(current_matrix_)); |
+} |
+ |
+GLImageStream::~GLImageStream() {} |
+ |
+void GLImageStream::Destroy() { |
+} |
+ |
+gfx::Size GLImageStream::GetSize() { |
+ return size_; |
+} |
+ |
+void GLImageStream::WillUseTexImage() { |
+ GLint texture_id = 0; |
+ glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id); |
+ surface_texture_bridge_->UpdateTexImage(); |
+ glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture_id); |
+ if (matrix_callback_.is_null()) |
+ return; |
+ |
+ Matrix new_matrix; |
+ surface_texture_bridge_->GetTransformMatrix(new_matrix.components); |
+ |
+ // Only query the matrix once we have bound a valid frame. |
+ if (has_updated_ && |
+ memcmp(¤t_matrix_, &new_matrix, sizeof(new_matrix)) != 0) { |
+ memcpy(¤t_matrix_, &new_matrix, sizeof(new_matrix)); |
+ matrix_callback_.Run(new_matrix); |
+ } |
+} |
+ |
+GLImageStream* GLImageStream::AsGLImageStream() { |
+ return this; |
+} |
+ |
+SurfaceTextureBridge* GLImageStream::GetSurfaceTexture() { |
+ return surface_texture_bridge_; |
+} |
+ |
+void GLImageStream::SetFrameAvailableCallback(const base::Closure& callback) { |
+ frame_callback_ = callback; |
+ // Use a weak pointer here to avoid a circular reference between |
+ // |this| and surface_texture_bridge_. |
+ base::Closure frame_cb = |
+ base::Bind(&GLImageStream::OnFrameAvailable, weak_factory_.GetWeakPtr()); |
+ surface_texture_bridge_->SetFrameAvailableCallback(frame_cb); |
+} |
+ |
+void GLImageStream::OnFrameAvailable() { |
+ has_updated_ = true; |
+ frame_callback_.Run(); |
+} |
+ |
+bool GLImageStream::BindTexImage() { |
+ if (!surface_texture_bridge_) { |
+ GLint texture_id = 0; |
+ glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id); |
+ if (!texture_id) |
+ return false; |
+ |
+ surface_texture_bridge_(new gfx::SurfaceTextureBridge(texture_id)); |
+ return true; |
+ } |
+ surface_texture_bridge_->AttachToGLContext(); |
+ return true; |
+} |
+ |
+void GLImageStream::ReleaseTexImage() { |
+ surface_texture_bridge_->DetachFromGLContext(); |
+} |
+ |
+} // namespace gfx |