blob: 1d145e83d72091688fa94413267342f007682971 [file] [log] [blame]
// Copyright (c) 2011 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 <vector>
#include "base/gtest_prod_util.h"
#include "remoting/base/encoder.h"
#include "third_party/skia/include/core/SkRect.h"
typedef struct vpx_codec_ctx vpx_codec_ctx_t;
typedef struct vpx_image vpx_image_t;
namespace remoting {
// A class that uses VP8 to perform encoding.
class EncoderVp8 : public Encoder {
virtual ~EncoderVp8();
virtual void Encode(scoped_refptr<CaptureData> capture_data,
bool key_frame,
DataAvailableCallback* data_available_callback);
typedef std::vector<SkIRect> RectVector;
FRIEND_TEST_ALL_PREFIXES(EncoderVp8Test, AlignAndClipRect);
// Initialize the encoder. Returns true if successful.
bool Init(const SkISize& size);
// Destroy the encoder.
void Destroy();
// Prepare |image_| for encoding. Write updated rectangles into
// |updated_rects|. Returns true if successful.
bool PrepareImage(scoped_refptr<CaptureData> capture_data,
RectVector* updated_rects);
// Update the active map according to |updated_rects|. Active map is then
// given to the encoder to speed up encoding.
void PrepareActiveMap(const RectVector& updated_rects);
// Align the sides of the rectangle to multiples of 2 (expanding outwards),
// but ensuring the result stays within the screen area (width, height).
// If |rect| falls outside the screen area, return an empty rect.
// TODO(lambroslambrou): Pull this out if it's useful for other things than
// VP8-encoding?
static SkIRect AlignAndClipRect(const SkIRect& rect, int width, int height);
// True if the encoder is initialized.
bool initialized_;
scoped_ptr<vpx_codec_ctx_t> codec_;
scoped_ptr<vpx_image_t> image_;
scoped_array<uint8> active_map_;
int active_map_width_;
int active_map_height_;
int last_timestamp_;
// Buffer for storing the yuv image.
scoped_array<uint8> yuv_image_;
// The current frame size.
SkISize size_;
} // namespace remoting