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604fd2f1ab
Bug: webrtc:13555, webrtc:13082 Change-Id: I2c2cbcbd918f0cfa970c1a964893220ba11d4b41 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/247960 Reviewed-by: Artem Titov <titovartem@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: (Daniel.L) Byoungchan Lee <daniel.l@hpcnt.com> Cr-Commit-Position: refs/heads/main@{#35771}
128 lines
3.6 KiB
C++
128 lines
3.6 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_G711_AUDIO_ENCODER_PCM_H_
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#define MODULES_AUDIO_CODING_CODECS_G711_AUDIO_ENCODER_PCM_H_
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#include <utility>
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#include <vector>
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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/units/time_delta.h"
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namespace webrtc {
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class AudioEncoderPcm : public AudioEncoder {
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public:
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struct Config {
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public:
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bool IsOk() const;
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int frame_size_ms;
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size_t num_channels;
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int payload_type;
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protected:
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explicit Config(int pt)
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: frame_size_ms(20), num_channels(1), payload_type(pt) {}
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};
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~AudioEncoderPcm() 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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void Reset() override;
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absl::optional<std::pair<TimeDelta, TimeDelta>> GetFrameLengthRange()
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const override;
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protected:
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AudioEncoderPcm(const Config& config, int sample_rate_hz);
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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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virtual size_t EncodeCall(const int16_t* audio,
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size_t input_len,
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uint8_t* encoded) = 0;
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virtual size_t BytesPerSample() const = 0;
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// Used to set EncodedInfoLeaf::encoder_type in
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// AudioEncoderPcm::EncodeImpl
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virtual AudioEncoder::CodecType GetCodecType() const = 0;
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private:
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const int sample_rate_hz_;
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const size_t num_channels_;
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const int payload_type_;
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const size_t num_10ms_frames_per_packet_;
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const size_t full_frame_samples_;
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std::vector<int16_t> speech_buffer_;
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uint32_t first_timestamp_in_buffer_;
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};
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class AudioEncoderPcmA final : public AudioEncoderPcm {
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public:
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struct Config : public AudioEncoderPcm::Config {
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Config() : AudioEncoderPcm::Config(8) {}
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};
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explicit AudioEncoderPcmA(const Config& config)
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: AudioEncoderPcm(config, kSampleRateHz) {}
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AudioEncoderPcmA(const AudioEncoderPcmA&) = delete;
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AudioEncoderPcmA& operator=(const AudioEncoderPcmA&) = delete;
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protected:
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size_t EncodeCall(const int16_t* audio,
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size_t input_len,
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uint8_t* encoded) override;
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size_t BytesPerSample() const override;
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AudioEncoder::CodecType GetCodecType() const override;
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private:
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static const int kSampleRateHz = 8000;
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};
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class AudioEncoderPcmU final : public AudioEncoderPcm {
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public:
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struct Config : public AudioEncoderPcm::Config {
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Config() : AudioEncoderPcm::Config(0) {}
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};
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explicit AudioEncoderPcmU(const Config& config)
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: AudioEncoderPcm(config, kSampleRateHz) {}
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AudioEncoderPcmU(const AudioEncoderPcmU&) = delete;
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AudioEncoderPcmU& operator=(const AudioEncoderPcmU&) = delete;
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protected:
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size_t EncodeCall(const int16_t* audio,
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size_t input_len,
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uint8_t* encoded) override;
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size_t BytesPerSample() const override;
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AudioEncoder::CodecType GetCodecType() const override;
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private:
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static const int kSampleRateHz = 8000;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_CODING_CODECS_G711_AUDIO_ENCODER_PCM_H_
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