source-engine/engine/voice_codecs/frame_encoder/iframeencoder.h

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2020-04-22 16:56:21 +00:00
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#ifndef IFRAMEENCODER_H
#define IFRAMEENCODER_H
#pragma once
// A frame encoder is a codec that encodes and decodes data in fixed-size frames.
// VoiceCodec_Frame handles queuing of data and the IVoiceCodec interface.
abstract_class IFrameEncoder
{
public:
virtual ~IFrameEncoder() {}
// This is called by VoiceCodec_Frame to see if it can initialize..
// Fills in the uncompressed and encoded frame size (both are in BYTES).
virtual bool Init(int quality, int &rawFrameSize, int &encodedFrameSize) = 0;
virtual void Release() = 0;
// pUncompressed is 8-bit signed mono sound data with 'rawFrameSize' bytes.
// pCompressed is the size of encodedFrameSize.
virtual void EncodeFrame(const char *pUncompressed, char *pCompressed) = 0;
// pCompressed is encodedFrameSize.
// pDecompressed is where the 8-bit signed mono samples are stored and has space for 'rawFrameSize' bytes.
virtual void DecodeFrame(const char *pCompressed, char *pDecompressed) = 0;
// Some codecs maintain state between Compress and Decompress calls. This should clear that state.
virtual bool ResetState() = 0;
};
#endif // IFRAMEENCODER_H