Benchmark tool for GPU-accelerated video rendering

media/tools/shader_bench/shader_bench.cc

+// Copyright (c) 2010 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 <deque>
+#include <iostream>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "app/gfx/gl/gl_bindings.h"
+#include "app/gfx/gl/gl_context.h"
+#include "app/gfx/gl/gl_implementation.h"
+#include "base/at_exit.h"
+#include "base/command_line.h"
+#include "base/scoped_ptr.h"
+#include "base/string_number_conversions.h"
+#include "base/time.h"
+#include "gfx/native_widget_types.h"
+#include "media/base/callback.h"
+#include "media/base/video_frame.h"
+#include "media/tools/shader_bench/cpu_color_painter.h"
+#include "media/tools/shader_bench/gpu_color_painter.h"
+#include "media/tools/shader_bench/gpu_color_painter_exp.h"
+#include "media/tools/shader_bench/painter.h"
+#include "media/tools/shader_bench/window.h"
+
+#if defined(OS_LINUX)
+#include <gtk/gtk.h>
+#endif
+
+static const int kNumFramesToPaint = 500;
+base::TimeTicks start_;

[Alpha Left Google, 2010/11/29 20:06:13]

global variables should be called g_***_.

[vrk (LEFT CHROMIUM), 2010/11/30 01:21:35]

Done.

+base::TimeTicks end_;
+
+long CalculateYUVFrameSize(FILE* file_handle, int num_frames) {
+  fseek(file_handle, 0, SEEK_END);
+  uint64 file_size = ftell(file_handle);
+  rewind(file_handle);
+  return file_size / num_frames;
+}
+
+void GetFrames(std::string file_name,
+               int width, int height, int num_frames,
+               std::deque<scoped_refptr<media::VideoFrame> >& out_frames) {
+  FILE* file_handle = fopen(file_name.c_str(), "rb");
+  if (!file_handle) {
+    printf("Could not open %s\n", file_name.c_str());
+    exit(1);
+  }
+
+  long frame_size = CalculateYUVFrameSize(file_handle, num_frames);
+
+  for (int i = 0; i < num_frames; i++) {
+    scoped_refptr<media::VideoFrame> video_frame;
+
+    media::VideoFrame::CreateFrame(media::VideoFrame::YV12,
+                                   width,
+                                   height,
+                                   base::TimeDelta(),
+                                   base::TimeDelta(),
+                                   &video_frame);
+    long bytes_read =
+        fread(video_frame->data(0), 1, frame_size, file_handle);
+
+    if (bytes_read != frame_size) {
+      printf("Could not read %s\n", file_name.c_str());
+      fclose(file_handle);
+      exit(1);
+    }
+    out_frames.push_back(video_frame);
+  }
+
+  fclose(file_handle);
+}
+
+void TestFinished() {
+  end_ = base::TimeTicks::HighResNow();
+  double time_in_seconds =
+      static_cast<double>((end_ - start_).InMilliseconds()) / 1000;
+  double fps = kNumFramesToPaint / time_in_seconds;
+  printf("Printed %f frames per second.\n", fps);
+}
+
+void RunTest(media::Window* window, Painter* painter) {
+  start_ = base::TimeTicks::HighResNow();
+  window->Start(kNumFramesToPaint, NewRunnableFunction(&TestFinished), painter);
+}
+
+int main(int argc, char** argv) {
+  // Read command line.
+#if defined(OS_LINUX)
+  gtk_init(&argc, &argv);
+#endif
+  CommandLine::Init(argc, argv);
+
+  // Determine file name.
+  std::string file_name =
+      CommandLine::ForCurrentProcess()->GetSwitchValueASCII("file");
+
+  // Determine number of frames.
+  int num_frames = 0;
+  std::string str_num_frames =
+      CommandLine::ForCurrentProcess()->GetSwitchValueASCII("frames");
+  base::StringToInt(str_num_frames, &num_frames);
+
+  // Determine video dimensions.
+  int width = 0;
+  int height = 0;
+  std::string dimensions =
+      CommandLine::ForCurrentProcess()->GetSwitchValueASCII("wxh");
+  int x_index = dimensions.find('x');
+  std::string str_width = dimensions.substr(0, x_index);
+  std::string str_height =
+      dimensions.substr(x_index + 1, dimensions.length() - x_index - 1);
+  base::StringToInt(str_width, &width);
+  base::StringToInt(str_height, &height);
+
+  // Process files.
+  std::deque<scoped_refptr<media::VideoFrame> > frames;
+  GetFrames(file_name, width, height, num_frames, frames);
+
+  // Initialize window and graphics context.
+  base::AtExitManager at_exit_manager;
+  gfx::GLContext::InitializeOneOff();
+  scoped_ptr<media::Window> window(new media::Window(width, height));
+  gfx::GLContext* context =
+      gfx::GLContext::CreateViewGLContext(window->PluginWindow(), false);
+  context->MakeCurrent();
+  // This sets D3DPRESENT_INTERVAL_IMMEDIATE on Windows.
+  context->SetSwapInterval(0);
+
+  // Initialize and name GPU painters.
+  static const int kNumPainters = 3;
+  static const struct {
+    const char* name;
+    GPUPainter* painter;
+  } painters[] = {
+    { "CPU CSC + GPU Render", new CPUColorPainter() },
+    { "GPU CSC/Render", new GPUColorWithLuminancePainter() },
+    { "GPU CSC/Render (experimental)", new GPUColorRGBALumHackPainter() },
+  };
+
+  // Run GPU painter tests.
+  for (int i = 0; i < kNumPainters; i++) {
+    scoped_ptr<GPUPainter> painter(painters[i].painter);
+    painter->LoadFrames(&frames);
+    painter->SetGLContext(context);
+    painter->Initialize(width, height);
+    printf("Running %s tests...", painters[i].name);
+    RunTest(window.get(), painter.get());
+  }
+
+  return 0;
+}