media/tools/shader_bench/gpu_color_painter.h

// Copyright (c) 2012 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.

#ifndef MEDIA_TOOLS_SHADER_BENCH_GPU_COLOR_PAINTER_H_
#define MEDIA_TOOLS_SHADER_BENCH_GPU_COLOR_PAINTER_H_

#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "media/base/video_frame.h"
#include "media/tools/shader_bench/gpu_painter.h"
#include "ui/gl/gl_context.h"

// Does color space conversion using luminance textures on GPU,
// renders using GPU.
class GPUColorWithLuminancePainter : public GPUPainter {
 public:
  GPUColorWithLuminancePainter();
  virtual ~GPUColorWithLuminancePainter();

  // Painter interface.
  virtual void Initialize(int width, int height) OVERRIDE;
  virtual void Paint(scoped_refptr<media::VideoFrame> video_frame) OVERRIDE;

 private:
  // Shader program id.
  GLuint program_id_;

  // IDs of 3 luminance textures.
  GLuint textures_[3];

  DISALLOW_COPY_AND_ASSIGN(GPUColorWithLuminancePainter);
};

#endif  // MEDIA_TOOLS_SHADER_BENCH_GPU_COLOR_PAINTER_H_