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The WebRTC-SendSideBwe-WithOverhead field trial requires audio encoders to properly implement the AudioEncoder::GetFrameLengthRange() function. Thic CL implements the function for all audio encoders in WebRTC in preparation for making that function pure virtual in the interface. Bug: webrtc:11427 Change-Id: Ieab6b6c72c62af6ac9525a20fcb39bd477079551 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/171503 Reviewed-by: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Minyue Li <minyue@webrtc.org> Commit-Queue: Minyue Li <minyue@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30890}
57 lines
2 KiB
C++
57 lines
2 KiB
C++
/*
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* Copyright (c) 2014 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_AUDIO_CODING_CODECS_ILBC_AUDIO_ENCODER_ILBC_H_
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#define MODULES_AUDIO_CODING_CODECS_ILBC_AUDIO_ENCODER_ILBC_H_
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#include <utility>
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#include "absl/types/optional.h"
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#include "api/audio_codecs/audio_encoder.h"
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#include "api/audio_codecs/ilbc/audio_encoder_ilbc_config.h"
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#include "api/units/time_delta.h"
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#include "modules/audio_coding/codecs/ilbc/ilbc.h"
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#include "rtc_base/constructor_magic.h"
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namespace webrtc {
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class AudioEncoderIlbcImpl final : public AudioEncoder {
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public:
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AudioEncoderIlbcImpl(const AudioEncoderIlbcConfig& config, int payload_type);
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~AudioEncoderIlbcImpl() override;
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int SampleRateHz() const override;
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size_t NumChannels() const override;
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size_t Num10MsFramesInNextPacket() const override;
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size_t Max10MsFramesInAPacket() const override;
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int GetTargetBitrate() const override;
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EncodedInfo EncodeImpl(uint32_t rtp_timestamp,
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rtc::ArrayView<const int16_t> audio,
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rtc::Buffer* encoded) override;
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void Reset() override;
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absl::optional<std::pair<TimeDelta, TimeDelta>> GetFrameLengthRange()
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const override;
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private:
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size_t RequiredOutputSizeBytes() const;
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static constexpr size_t kMaxSamplesPerPacket = 480;
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const int frame_size_ms_;
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const int payload_type_;
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const size_t num_10ms_frames_per_packet_;
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size_t num_10ms_frames_buffered_;
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uint32_t first_timestamp_in_buffer_;
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int16_t input_buffer_[kMaxSamplesPerPacket];
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IlbcEncoderInstance* encoder_;
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RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderIlbcImpl);
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_CODING_CODECS_ILBC_AUDIO_ENCODER_ILBC_H_
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