audio_memory.h

/*
 * audio_memory.h - audio buffer SDRAM access functions
 *
 * Author: Dan Green (danngreen1@gmail.com)
 *
 * 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.
 *
 * See http://creativecommons.org/licenses/MIT/ for more information.
 *
 * -----------------------------------------------------------------------------
 */


#ifndef AUDIO_MEMORY_H_
#define AUDIO_MEMORY_H_
#include <stm32f4xx.h>

uint32_t memory_read(uint32_t *addr, uint8_t channel, int32_t *rd_buff, uint8_t num_samples, uint32_t loop_addr, uint8_t decrement);
void memory_write(uint32_t *addr, uint8_t channel, int32_t *wr_buff, uint8_t num_samples, uint8_t decrement);
void memory_fade_write(uint32_t *addr, uint8_t channel, int32_t *wr_buff, uint8_t num_samples, uint8_t decrement, float fade);

void memory_clear(uint8_t channel);

#endif /* AUDIO_MEMORY_H_ */