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/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_H_
#define API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_H_
#include <memory>
#include <vector>
namespace webrtc {
class VideoEncoder;
struct SdpVideoFormat;
// A factory that creates VideoEncoders.
// NOTE: This class is still under development and may change without notice.
class VideoEncoderFactory {
public:
// TODO(magjed): Try to get rid of this struct.
struct CodecInfo {
// |is_hardware_accelerated| is true if the encoders created by this factory
// of the given codec will use hardware support.
bool is_hardware_accelerated;
// |has_internal_source| is true if encoders created by this factory of the
// given codec will use internal camera sources, meaning that they don't
// require/expect frames to be delivered via webrtc::VideoEncoder::Encode.
// This flag is used as the internal_source parameter to
// webrtc::ViEExternalCodec::RegisterExternalSendCodec.
bool has_internal_source;
};
// Returns a list of supported video formats in order of preference, to use
// for signaling etc.
virtual std::vector<SdpVideoFormat> GetSupportedFormats() const = 0;
// Returns information about how this format will be encoded. The specified
// format must be one of the supported formats by this factory.
// TODO(magjed): Try to get rid of this method.
virtual CodecInfo QueryVideoEncoder(const SdpVideoFormat& format) const = 0;
// Creates a VideoEncoder for the specified format.
virtual std::unique_ptr<VideoEncoder> CreateVideoEncoder(
const SdpVideoFormat& format) = 0;
virtual ~VideoEncoderFactory() {}
};
} // namespace webrtc
#endif // API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_H_