shithub: leaf

ref: 21f5ac6f65245a6d5f1b63b0f1a38d4001f1d5dc
dir: /LEAF/Inc/audiostream.h/

/**
  ******************************************************************************
  * @file    Audio_playback_and_record/inc/waveplayer.h
  * @author  MCD Application Team
  * @version V1.1.0
  * @date    26-June-2014
  * @brief   Header for waveplayer.c module.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __AUDIOSTREAM_H
#define __AUDIOSTREAM_H

/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"
#include "leaf.h"
#include "main.h"

#define AUDIO_FRAME_SIZE      128
#define HALF_BUFFER_SIZE      AUDIO_FRAME_SIZE * 2 //number of samples per half of the "double-buffer" (twice the audio frame size because there are interleaved samples for both left and right channels)
#define AUDIO_BUFFER_SIZE     AUDIO_FRAME_SIZE * 4 //number of samples in the whole data structure (four times the audio frame size because of stereo and also double-buffering/ping-ponging)


extern int32_t audioOutBuffer[AUDIO_BUFFER_SIZE];
extern int32_t audioInBuffer[AUDIO_BUFFER_SIZE];
extern tMempool smallPool;
extern tMempool largePool;
extern uint8_t codecReady;
extern float sample;
extern float rightOut;
extern float rightIn;
extern tRamp adc[6];
extern float smoothedADC[6];
extern float audioDisplayBuffer[128];
extern uint8_t displayBufferIndex;

/* Exported types ------------------------------------------------------------*/
typedef enum
{
  BUFFER_OFFSET_NONE = 0,
  BUFFER_OFFSET_HALF,
  BUFFER_OFFSET_FULL,
}BUFFER_StateTypeDef;

#ifdef SAMPLERATE96K
#define SAMPLE_RATE 96000.f
#else
#define SAMPLE_RATE 48000.f
#endif

typedef enum BOOL {
	FALSE = 0,
	TRUE
} BOOL;

#define INV_SAMPLE_RATE 1.f/SAMPLE_RATE
#define SAMPLE_RATE_MS (SAMPLE_RATE / 1000.f)
#define INV_SR_MS 1.f/SAMPLE_RATE_MS
#define SAMPLE_RATE_DIV_PARAMS SAMPLE_RATE / 3
#define SAMPLE_RATE_DIV_PARAMS_MS (SAMPLE_RATE_DIV_PARAMS / 1000.f)
#define INV_SR_DIV_PARAMS_MS 1.f/SAMPLE_RATE_DIV_PARAMS_MS

/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
void audioInit(I2C_HandleTypeDef* hi2c, SAI_HandleTypeDef* hsaiOut, SAI_HandleTypeDef* hsaiIn);

void initFunctionPointers(void);

void audioFrame(uint16_t buffer_offset);

void DMA1_TransferCpltCallback(DMA_HandleTypeDef *hdma);
void DMA1_HalfTransferCpltCallback(DMA_HandleTypeDef *hdma);

#endif /* __AUDIOSTREAM_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/