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media / cast / encoding / video_encoder_impl.h [blame]
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_CAST_ENCODING_VIDEO_ENCODER_IMPL_H_
#define MEDIA_CAST_ENCODING_VIDEO_ENCODER_IMPL_H_
#include <memory>
#include "media/cast/cast_config.h"
#include "media/cast/cast_environment.h"
#include "media/cast/encoding/software_video_encoder.h"
#include "media/cast/encoding/video_encoder.h"
namespace media {
class VideoEncoderMetricsProvider;
class VideoFrame;
namespace cast {
// This object is called external from the main cast thread and internally from
// the video encoder thread.
class VideoEncoderImpl final : public VideoEncoder {
public:
struct CodecDynamicConfig {
bool key_frame_requested;
int bit_rate;
};
// Returns true if VideoEncoderImpl can be used with the given |video_config|.
static bool IsSupported(const FrameSenderConfig& video_config);
VideoEncoderImpl(
scoped_refptr<CastEnvironment> cast_environment,
const FrameSenderConfig& video_config,
std::unique_ptr<VideoEncoderMetricsProvider> metrics_provider,
StatusChangeCallback status_change_cb,
FrameEncodedCallback output_cb);
VideoEncoderImpl(const VideoEncoderImpl&) = delete;
VideoEncoderImpl& operator=(const VideoEncoderImpl&) = delete;
~VideoEncoderImpl() final;
// VideoEncoder implementation.
bool EncodeVideoFrame(scoped_refptr<media::VideoFrame> video_frame,
base::TimeTicks reference_time) final;
void SetBitRate(int new_bit_rate) final;
void GenerateKeyFrame() final;
private:
scoped_refptr<CastEnvironment> cast_environment_;
CodecDynamicConfig dynamic_config_;
FrameEncodedCallback output_cb_;
// 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.
std::unique_ptr<SoftwareVideoEncoder> encoder_;
};
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_ENCODING_VIDEO_ENCODER_IMPL_H_