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// 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.
#ifndef MEDIA_CAST_SENDER_VIDEO_ENCODER_IMPL_H_
#define MEDIA_CAST_SENDER_VIDEO_ENCODER_IMPL_H_
#include "base/memory/scoped_ptr.h"
#include "media/cast/cast_config.h"
#include "media/cast/cast_environment.h"
#include "media/cast/sender/software_video_encoder.h"
#include "media/cast/sender/video_encoder.h"
namespace media {
class VideoFrame;
namespace cast {
// This object is called external from the main cast thread and internally from
// the video encoder thread.
class VideoEncoderImpl : public VideoEncoder {
public:
struct CodecDynamicConfig {
bool key_frame_requested;
uint32 latest_frame_id_to_reference;
int bit_rate;
};
typedef base::Callback<void(scoped_ptr<EncodedFrame>)>
FrameEncodedCallback;
// Returns true if VideoEncoderImpl can be used with the given |video_config|.
static bool IsSupported(const VideoSenderConfig& video_config);
VideoEncoderImpl(scoped_refptr<CastEnvironment> cast_environment,
const VideoSenderConfig& video_config,
const StatusChangeCallback& status_change_cb);
~VideoEncoderImpl() override;
// VideoEncoder implementation.
bool EncodeVideoFrame(
const scoped_refptr<media::VideoFrame>& video_frame,
const base::TimeTicks& reference_time,
const FrameEncodedCallback& frame_encoded_callback) override;
void SetBitRate(int new_bit_rate) override;
void GenerateKeyFrame() override;
void LatestFrameIdToReference(uint32 frame_id) override;
private:
scoped_refptr<CastEnvironment> cast_environment_;
CodecDynamicConfig dynamic_config_;
// This member belongs to the video encoder thread. It must not be
// dereferenced on the main thread. We manage the lifetime of this member
// manually because it needs to be initialize, used and destroyed on the
// video encoder thread and video encoder thread can out-live the main thread.
scoped_ptr<SoftwareVideoEncoder> encoder_;
DISALLOW_COPY_AND_ASSIGN(VideoEncoderImpl);
};
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_SENDER_VIDEO_ENCODER_IMPL_H_