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16359f65c4
Before this CL, WebRTC created a decoder for each negotiated codec profile. This quickly consumed all available HW decoder resources on some platforms. This CL adds a field trial, WebRTC-PreStreamDecoders, that makes it possible to set how many decoders that should be created up front, from 0 to ALL. If the field trial is set to 1, we only create a decoder for the preferred codec. The other decoders are only created when they are needed (i.e., if we receive the corresponding payload type). Bug: webrtc:12462 Change-Id: I087571b540f6796d32d34923f9c7f8e89b0959c5 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/208284 Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Commit-Queue: Johannes Kron <kron@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33300}
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018 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 MODULES_VIDEO_CODING_DECODER_DATABASE_H_
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#define MODULES_VIDEO_CODING_DECODER_DATABASE_H_
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#include <map>
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#include <memory>
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#include "modules/video_coding/generic_decoder.h"
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namespace webrtc {
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struct VCMDecoderMapItem {
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public:
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VCMDecoderMapItem(VideoCodec* settings, int number_of_cores);
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~VCMDecoderMapItem();
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std::unique_ptr<VideoCodec> settings;
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int number_of_cores;
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};
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struct VCMExtDecoderMapItem {
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public:
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VCMExtDecoderMapItem(VideoDecoder* external_decoder_instance,
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uint8_t payload_type);
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uint8_t payload_type;
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VideoDecoder* external_decoder_instance;
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};
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class VCMDecoderDataBase {
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public:
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VCMDecoderDataBase();
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~VCMDecoderDataBase();
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bool DeregisterExternalDecoder(uint8_t payload_type);
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void RegisterExternalDecoder(VideoDecoder* external_decoder,
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uint8_t payload_type);
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bool IsExternalDecoderRegistered(uint8_t payload_type) const;
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bool RegisterReceiveCodec(uint8_t payload_type,
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const VideoCodec* receive_codec,
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int number_of_cores);
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bool DeregisterReceiveCodec(uint8_t payload_type);
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// Returns a decoder specified by frame.PayloadType. The decoded frame
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// callback of the decoder is set to |decoded_frame_callback|. If no such
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// decoder already exists an instance will be created and initialized.
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// nullptr is returned if no decoder with the specified payload type was found
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// and the function failed to create one.
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VCMGenericDecoder* GetDecoder(
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const VCMEncodedFrame& frame,
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VCMDecodedFrameCallback* decoded_frame_callback);
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private:
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typedef std::map<uint8_t, VCMDecoderMapItem*> DecoderMap;
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typedef std::map<uint8_t, VCMExtDecoderMapItem*> ExternalDecoderMap;
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std::unique_ptr<VCMGenericDecoder> CreateAndInitDecoder(
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const VCMEncodedFrame& frame,
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VideoCodec* new_codec) const;
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const VCMDecoderMapItem* FindDecoderItem(uint8_t payload_type) const;
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const VCMExtDecoderMapItem* FindExternalDecoderItem(
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uint8_t payload_type) const;
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uint8_t current_payload_type_; // Corresponding to receive_codec_.
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VideoCodec receive_codec_;
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std::unique_ptr<VCMGenericDecoder> ptr_decoder_;
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DecoderMap dec_map_;
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ExternalDecoderMap dec_external_map_;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_DECODER_DATABASE_H_
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