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d7d940ea59
Bug: webrtc:42226242 Change-Id: I7292811f782ec9a6710c84b1fc36e42ae7ea2c17 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/359840 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Dor Hen <dorhen@meta.com> Cr-Commit-Position: refs/heads/main@{#42802}
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/*
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* Copyright (c) 2024 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_INTERFACE_H_
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#define API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_INTERFACE_H_
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#include <map>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include "absl/types/variant.h"
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#include "api/units/time_delta.h"
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#include "api/video/resolution.h"
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#include "api/video/video_frame_buffer.h"
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#include "api/video_codecs/video_encoder_interface.h"
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#include "api/video_codecs/video_encoding_general.h"
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#include "rtc_base/numerics/rational.h"
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namespace webrtc {
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using FrameType = VideoEncoderInterface::FrameType;
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// NOTE: This class is still under development and may change without notice.
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class VideoEncoderFactoryInterface {
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public:
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enum class RateControlMode { kCqp, kCbr };
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struct Capabilities {
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struct PredictionConstraints {
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enum class BufferSpaceType {
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kMultiInstance, // multiple independent sets of buffers
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kMultiKeyframe, // single set of buffers, but can store multiple
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// keyframes simultaneously.
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kSingleKeyframe // single set of buffers, can only store one keyframe
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// at a time.
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};
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int num_buffers;
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int max_references;
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int max_temporal_layers;
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BufferSpaceType buffer_space_type;
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int max_spatial_layers;
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std::vector<Rational> scaling_factors;
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std::vector<FrameType> supported_frame_types;
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} prediction_constraints;
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struct InputConstraints {
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Resolution min;
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Resolution max;
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int pixel_alignment;
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std::vector<VideoFrameBuffer::Type> input_formats;
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} input_constraints;
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std::vector<EncodingFormat> encoding_formats;
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struct BitrateControl {
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std::pair<int, int> qp_range;
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std::vector<RateControlMode> rc_modes;
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} rate_control;
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struct Performance {
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bool encode_on_calling_thread;
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std::pair<int, int> min_max_effort_level;
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} performance;
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};
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struct StaticEncoderSettings {
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struct Cqp {};
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struct Cbr {
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// TD: Should there be an intial buffer size?
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TimeDelta max_buffer_size;
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TimeDelta target_buffer_size;
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};
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Resolution max_encode_dimensions;
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EncodingFormat encoding_format;
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absl::variant<Cqp, Cbr> rc_mode;
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int max_number_of_threads;
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};
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virtual ~VideoEncoderFactoryInterface() = default;
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virtual std::string CodecName() const = 0;
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virtual std::string ImplementationName() const = 0;
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virtual std::map<std::string, std::string> CodecSpecifics() const = 0;
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virtual Capabilities GetEncoderCapabilities() const = 0;
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virtual std::unique_ptr<VideoEncoderInterface> CreateEncoder(
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const StaticEncoderSettings& settings,
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const std::map<std::string, std::string>& encoder_specific_settings) = 0;
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};
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} // namespace webrtc
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#endif // API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_INTERFACE_H_
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