/*
 * audio_buffer.h
 * Copyright (c) 2025 Christopher Herb
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#pragma once

#include <vector>

using namespace std;

namespace trnr {
template <typename t_sample>
struct audio_buffer {
	size_t channels;
	size_t frames;

	vector<t_sample> flat_data;
	vector<t_sample*> channel_ptrs;
};

template <typename t_sample>
void audio_buffer_init(audio_buffer<t_sample>& a, size_t channels, size_t frames)
{
	a.channels = channels;
	a.frames = frames;
	a.flat_data.resize(channels * frames);
	a.channel_ptrs.resize(channels);
	audio_buffer_update_ptrs(a);
}

template <typename t_sample>
void audio_buffer_update_ptrs(audio_buffer<t_sample>& a)
{
	for (int ch = 0; ch < a.channels; ++ch) {
		a.channel_ptrs[ch] = a.flat_data.data() + ch * a.frames;
	}
}
} // namespace trnr