55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#include <cassert>
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#include <cstring>
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#include "AudioReframer.h"
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using namespace tc::audio;
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InputReframer::InputReframer(size_t channels, size_t frame_size) : _frame_size(frame_size), _channels(channels) {
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this->buffer = nullptr;
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this->_buffer_index = 0;
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}
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InputReframer::~InputReframer() {
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if(this->buffer) {
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free(this->buffer);
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}
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}
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void InputReframer::process(const void *source, size_t samples) {
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if(!this->buffer) {
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this->buffer = (float*) malloc(this->_channels * this->_frame_size * sizeof(float));
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}
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assert(this->on_frame);
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if(this->_buffer_index > 0) {
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if(this->_buffer_index + samples > this->_frame_size) {
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auto required = this->_frame_size - this->_buffer_index;
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auto length = required * this->_channels * sizeof(float);
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memcpy((char*) this->buffer + this->_buffer_index * sizeof(float) * this->_channels, source, length);
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samples -= required;
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source = (char*) source + length;
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this->on_frame(this->buffer);
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} else {
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memcpy((char*) this->buffer + this->_buffer_index * sizeof(float) * this->_channels, source, samples * this->_channels * sizeof(float));
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this->_buffer_index += samples;
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return;
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}
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}
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auto _on_frame = this->on_frame;
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while(samples > this->_frame_size) {
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if(_on_frame) {
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_on_frame(source);
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}
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samples -= this->_frame_size;
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source = (char*) source + this->_frame_size * this->_channels * sizeof(float);
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}
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if(samples > 0) {
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memcpy((char*) this->buffer, source, samples * this->_channels * sizeof(float));
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}
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this->_buffer_index = samples;
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} |