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