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- #pragma once
- #include "Transport.hpp"
- #include <opus/opus.h>
- #include <speex/speex_jitter.h>
- #include <chrono>
- namespace mumlib {
- class MumlibException;
- class AudioException : public MumlibException {
- public:
- explicit AudioException(string message) : MumlibException(message) { }
- };
- struct IncomingAudioPacket {
- AudioPacketType type;
- int target;
- int64_t sessionId;
- int64_t sequenceNumber;
- uint8_t *audioPayload;
- int audioPayloadLength;
- };
- class Audio : boost::noncopyable {
- public:
- explicit Audio(int sampleRate=DEFAULT_OPUS_SAMPLE_RATE,
- int bitrate=DEFAULT_OPUS_ENCODER_BITRATE,
- int channels=DEFAULT_OPUS_NUM_CHANNELS);
- virtual ~Audio();
- IncomingAudioPacket decodeIncomingAudioPacket(uint8_t *inputBuffer, int inputBufferLength);
- void addFrameToBuffer(uint8_t *inputBuffer, int inputLength, int sequence);
- // todo: mix audio
- void mixAudio(uint8_t *dest, uint8_t *src, int bufferOffset, int inputLength);
- void resizeBuffer();
- std::pair<int, bool> decodeOpusPayload(int16_t *pcmBuffer,
- int pcmBufferSize);
-
- std::pair<int, bool> decodeOpusPayload(uint8_t *inputBuffer,
- int inputLength,
- int16_t *pcmBuffer,
- int pcmBufferSize);
- int encodeAudioPacket(
- int target,
- int16_t *inputPcmBuffer,
- int inputLength,
- uint8_t *outputBuffer,
- int outputBufferSize = MAX_UDP_LENGTH);
- void setOpusEncoderBitrate(int bitrate);
- int getOpusEncoderBitrate();
- void resetEncoder();
- void resetJitterBuffer();
- private:
- log4cpp::Category &logger;
- OpusDecoder *opusDecoder;
- OpusEncoder *opusEncoder;
- JitterBuffer *jbBuffer;
- int64_t outgoingSequenceNumber;
- unsigned int iSampleRate;
- unsigned int iChannels;
- unsigned int iFrameSize;
- unsigned int iAudioBufferSize;
- float *fFadeIn;
- float *fFadeOut;
- std::chrono::time_point<std::chrono::system_clock> lastEncodedAudioPacketTimestamp;
- };
- }
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