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/*
* Descent 3
* Copyright (C) 2024 Parallax Software
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef AUDIODECODE_H_
#define AUDIODECODE_H_
#include <cstdint>
namespace AudioDecoder {
class IAudioDecoder {
public:
virtual ~IAudioDecoder() {}
// Read data from the audio decoder.
// pBuffer: The buffer to receive the data from
// amount: How much data to read
// Returns the number of bytes read - zero when we're at the end of the file
virtual uint32_t Read(void *pBuffer, uint32_t amount) = 0;
};
// Create an audio decoder
// You supply a function for reading bytes from the compressed data via a
// void* pData handle, and the handle itself (typically a FILE *).
// Create_AudioDecoder returns a new AudioDecoder which can be used to
// read uncompressed decoded data from the compressed stream,
// and also returns the number of channels (1 or 2), the sample rate
// (e.g. 22050), and the number of samples contained in the compressed file
// (in case you want to pre-allocate a buffer to load them all into memory).
typedef int32_t (*ReadDataFunction)(void *pData, void *pBuffer, uint32_t amount);
IAudioDecoder *CreateDecoder(ReadDataFunction reader, void *pData, uint32_t &numChannels, uint32_t &sampleRate,
uint32_t &sampleCount);
} // namespace AudioDecoder
#endif
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