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

content/common/gpu/media/rendering_helper.cc

 // Copyright 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 "content/common/gpu/media/rendering_helper.h"
 
 #include <algorithm>
 #include <numeric>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringize_macros.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/time/time.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
-#include "ui/gl/gl_surface_egl.h"
-#include "ui/gl/gl_surface_glx.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #if defined(USE_X11)
 #include "ui/gfx/x/x11_types.h"
 #endif
 
-#if !defined(OS_WIN) && defined(ARCH_CPU_X86_FAMILY)
+#if defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11)
+#include "ui/gl/gl_surface_glx.h"
 #define GL_VARIANT_GLX 1
 #else
+#include "ui/gl/gl_surface_egl.h"
 #define GL_VARIANT_EGL 1
 #endif
 
 // Helper for Shader creation.
 static void CreateShader(GLuint program,
                          GLenum type,
                          const char* source,
                          int size) {
   GLuint shader = glCreateShader(type);
   glShaderSource(shader, 1, &source, &size);
@@ skipping 74 matching lines @@
       base::Bind(&RenderingHelper::RenderContent, base::Unretained(this)));
 
   frame_duration_ = params.rendering_fps > 0
                         ? base::TimeDelta::FromSeconds(1) / params.rendering_fps
                         : base::TimeDelta();
 
   render_as_thumbnails_ = params.render_as_thumbnails;
   message_loop_ = base::MessageLoop::current();
 
 #if defined(OS_WIN)
-  screen_size_ =
-      gfx::Size(GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN));
   window_ = CreateWindowEx(0,
                            L"Static",
                            L"VideoDecodeAcceleratorTest",
                            WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                            0,
                            0,
-                           screen_size_.width(),
-                           screen_size_.height(),
+                           GetSystemMetrics(SM_CXSCREEN),
+                           GetSystemMetrics(SM_CYSCREEN),
                            NULL,
                            NULL,
                            NULL,
                            NULL);
 #elif defined(USE_X11)
   Display* display = gfx::GetXDisplay();
   Screen* screen = DefaultScreenOfDisplay(display);
-  screen_size_ = gfx::Size(XWidthOfScreen(screen), XHeightOfScreen(screen));
 
   CHECK(display);
 
   XSetWindowAttributes window_attributes;
   memset(&window_attributes, 0, sizeof(window_attributes));
   window_attributes.background_pixel =
       BlackPixel(display, DefaultScreen(display));
   window_attributes.override_redirect = true;
   int depth = DefaultDepth(display, DefaultScreen(display));
 
   window_ = XCreateWindow(display,
                           DefaultRootWindow(display),
                           0,
                           0,
-                          screen_size_.width(),
-                          screen_size_.height(),
+                          XWidthOfScreen(screen),
+                          XHeightOfScreen(screen),
                           0 /* border width */,
                           depth,
                           CopyFromParent /* class */,
                           CopyFromParent /* visual */,
                           (CWBackPixel | CWOverrideRedirect),
                           &window_attributes);
   XStoreName(display, window_, "VideoDecodeAcceleratorTest");
   XSelectInput(display, window_, ExposureMask);
   XMapWindow(display, window_);
 #else
 #error unknown platform
 #endif
   CHECK(window_ != gfx::kNullAcceleratedWidget);
 
   gl_surface_ = gfx::GLSurface::CreateViewGLSurface(window_);
+  screen_size_ = gl_surface_->GetSize();
+
   gl_context_ = gfx::GLContext::CreateGLContext(
       NULL, gl_surface_.get(), gfx::PreferIntegratedGpu);
-  gl_context_->MakeCurrent(gl_surface_.get());
+  CHECK(gl_context_->MakeCurrent(gl_surface_.get()));
 
   CHECK_GT(params.window_sizes.size(), 0U);
   videos_.resize(params.window_sizes.size());
   LayoutRenderingAreas(params.window_sizes);
 
   if (render_as_thumbnails_) {
     CHECK_EQ(videos_.size(), 1U);
 
     GLint max_texture_size;
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
@@ skipping 105 matching lines @@
   if (tex_external != -1) {
     glUniform1i(tex_external, 1);
   }
   int pos_location = glGetAttribLocation(program_, "in_pos");
   glEnableVertexAttribArray(pos_location);
   glVertexAttribPointer(pos_location, 2, GL_FLOAT, GL_FALSE, 0, kVertices);
   int tc_location = glGetAttribLocation(program_, "in_tc");
   glEnableVertexAttribArray(tc_location);
   glVertexAttribPointer(tc_location, 2, GL_FLOAT, GL_FALSE, 0, kTextureCoords);
 
-  if (frame_duration_ != base::TimeDelta())
-    WarmUpRendering(params.warm_up_iterations);
+  if (frame_duration_ != base::TimeDelta()) {
+    int warm_up_iterations = params.warm_up_iterations;
+    WarmUpRendering(warm_up_iterations);
+  }
 
   // It's safe to use Unretained here since |rendering_thread_| will be stopped
   // in VideoDecodeAcceleratorTest.TearDown(), while the |rendering_helper_| is
   // a member of that class. (See video_decode_accelerator_unittest.cc.)
   gfx::VSyncProvider* vsync_provider = gl_surface_->GetVSyncProvider();
-  if (vsync_provider)
+  if (vsync_provider && frame_duration_ != base::TimeDelta())
     vsync_provider->GetVSyncParameters(base::Bind(
         &RenderingHelper::UpdateVSyncParameters, base::Unretained(this), done));
   else
     done->Signal();
 }
 
 // The rendering for the first few frames is slow (e.g., 100ms on Peach Pit).
 // This affects the numbers measured in the performance test. We try to render
 // several frames here to warm up the rendering.
 void RenderingHelper::WarmUpRendering(int warm_up_iterations) {
   unsigned int texture_id;
-  scoped_ptr<GLubyte[]> emptyData(new GLubyte[screen_size_.GetArea() * 2]);
+  scoped_ptr<GLubyte[]> emptyData(new GLubyte[screen_size_.GetArea() * 2]());
   glGenTextures(1, &texture_id);
   glBindTexture(GL_TEXTURE_2D, texture_id);
   glTexImage2D(GL_TEXTURE_2D,
                0,
                GL_RGB,
                screen_size_.width(),
                screen_size_.height(),
                0,
                GL_RGB,
                GL_UNSIGNED_SHORT_5_6_5,
@@ skipping 123 matching lines @@
   glBindTexture(texture_target, 0);
   CHECK_EQ(static_cast<int>(glGetError()), GL_NO_ERROR);
 }
 
 void RenderingHelper::DeleteTexture(uint32 texture_id) {
   CHECK_EQ(base::MessageLoop::current(), message_loop_);
   glDeleteTextures(1, &texture_id);
   CHECK_EQ(static_cast<int>(glGetError()), GL_NO_ERROR);
 }
 
-void* RenderingHelper::GetGLContext() {
+scoped_refptr<gfx::GLContext> RenderingHelper::GetGLContext() {
+  return gl_context_;
+}
+
+void* RenderingHelper::GetGLContextHandle() {
   return gl_context_->GetHandle();
 }
 
 void* RenderingHelper::GetGLDisplay() {
   return gl_surface_->GetDisplay();
 }
 
 void RenderingHelper::Clear() {
   videos_.clear();
   message_loop_ = NULL;
   gl_context_ = NULL;
   gl_surface_ = NULL;
 
   render_as_thumbnails_ = false;
   frame_count_ = 0;
   thumbnails_fbo_id_ = 0;
   thumbnails_texture_id_ = 0;
 
 #if defined(OS_WIN)
   if (window_)
     DestroyWindow(window_);
-#else
+#elif defined(USE_X11)
   // Destroy resources acquired in Initialize, in reverse-acquisition order.
   if (window_) {
     CHECK(XUnmapWindow(gfx::GetXDisplay(), window_));
     CHECK(XDestroyWindow(gfx::GetXDisplay(), window_));
   }
 #endif
   window_ = gfx::kNullAcceleratedWidget;
 }
 
 void RenderingHelper::GetThumbnailsAsRGB(std::vector<unsigned char>* rgb,
@@ skipping 184 matching lines @@
   // When the rendering falls behind, drops frames.
   while (scheduled_render_time_ < target) {
     scheduled_render_time_ += frame_duration_;
     DropOneFrameForAllVideos();
   }
 
   message_loop_->PostDelayedTask(
       FROM_HERE, render_task_.callback(), target - now);
 }
 }  // namespace content