Reland: Refactor Vaapi video decoder/encoder in preparation of Freon support

content/common/gpu/media/vaapi_tfp_picture.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/media/va_surface.h"
+#include "content/common/gpu/media/vaapi_tfp_picture.h"
+#include "content/common/gpu/media/vaapi_wrapper.h"
+#include "ui/gfx/x/x11_types.h"
+#include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_image_glx.h"
+#include "ui/gl/scoped_binders.h"
+
+namespace content {
+
+VaapiTFPPicture::VaapiTFPPicture(
+    const scoped_refptr<VaapiWrapper>& vaapi_wrapper,
+    const base::Callback<bool(void)> make_context_current,
+    int32 picture_buffer_id,
+    uint32 texture_id,
+    const gfx::Size& size)
+    : VaapiPicture(picture_buffer_id, texture_id, size),
+      vaapi_wrapper_(vaapi_wrapper),
+      make_context_current_(make_context_current),
+      x_display_(gfx::GetXDisplay()),
+      x_pixmap_(0) {
+}
+
+VaapiTFPPicture::~VaapiTFPPicture() {
+  if (glx_image_.get() && make_context_current_.Run()) {
+    glx_image_->ReleaseTexImage(GL_TEXTURE_2D);
+    glx_image_->Destroy(true);
+    DCHECK_EQ(glGetError(), static_cast<GLenum>(GL_NO_ERROR));
+  }
+
+  if (x_pixmap_)
+    XFreePixmap(x_display_, x_pixmap_);
+}
+
+bool VaapiTFPPicture::Initialize() {
+  if (!make_context_current_.Run())
+    return false;
+
+  XWindowAttributes win_attr;
+  int screen = DefaultScreen(x_display_);
+  XGetWindowAttributes(x_display_, RootWindow(x_display_, screen), &win_attr);
+  // TODO(posciak): pass the depth required by libva, not the RootWindow's
+  // depth
+  x_pixmap_ = XCreatePixmap(x_display_, RootWindow(x_display_, screen),
+                            size().width(), size().height(), win_attr.depth);
+  if (!x_pixmap_) {
+    LOG(ERROR) << "Failed creating an X Pixmap for TFP";
+    return false;
+  }
+
+  glx_image_ = new gfx::GLImageGLX(size(), GL_RGB);
+  if (!glx_image_->Initialize(x_pixmap_)) {
+    // x_pixmap_ will be freed in the destructor.
+    LOG(ERROR) << "Failed creating a GLX Pixmap for TFP";
+    return false;
+  }
+
+  gfx::ScopedTextureBinder texture_binder(GL_TEXTURE_2D, texture_id());
+  if (!glx_image_->BindTexImage(GL_TEXTURE_2D)) {
+    LOG(ERROR) << "Failed to bind texture to glx image";
+    return false;
+  }
+
+  return true;
+}
+
+bool VaapiTFPPicture::DownloadFromSurface(
+    const scoped_refptr<VASurface>& va_surface) {
+  return vaapi_wrapper_->PutSurfaceIntoPixmap(va_surface->id(), x_pixmap_,
+                                              va_surface->size());
+}
+
+}  // namespace content