WolverinDEV
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
#pragma once
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#include <string>
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#if !defined(ssize_t) && defined(WIN32)
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#define ssize_t int64_t
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#endif
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namespace tc {
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namespace audio {
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namespace codec {
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namespace type {
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enum value {
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undefined,
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/* supported */
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opus,
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speex,
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/* unsupported */
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flac,
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celt
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};
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extern bool supported(value);
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}
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class Converter {
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public:
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Converter(size_t /* channels */, size_t /* sample rate */, size_t /* frame size */);
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virtual ~Converter();
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/* initialize parameters depend on the codec */
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virtual bool valid() = 0;
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virtual void finalize() = 0;
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virtual void reset_encoder() = 0;
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virtual void reset_decoder() = 0;
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/**
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* @return number of bytes written on success
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*/
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virtual ssize_t encode(std::string& /* error */, const void* /* source */, void* /* destination */, size_t /* destination byte length */) = 0;
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/**
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* @return number of samples on success
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*/
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virtual ssize_t decode(std::string& /* error */, const void* /* source */, size_t /* source byte length */, void* /* destination */) = 0;
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virtual ssize_t decode_lost(std::string& /* error */, size_t /* packets */) = 0;
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virtual size_t expected_encoded_length(size_t /* sample count */) = 0;
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virtual size_t expected_decoded_length(const void* /* source */, size_t /* source byte length */) {
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return this->bytes_per_frame();
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}
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inline size_t channels() { return this->_channels; }
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inline size_t sample_rate() { return this->_sample_rate; }
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inline size_t frame_size() { return this->_frame_size; }
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inline size_t bytes_per_frame() { return this->_channels * this->_frame_size * 4; }
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protected:
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size_t _frame_size;
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size_t _channels;
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size_t _sample_rate;
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};
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}
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}
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} |