You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.7 KiB
73 lines
2.7 KiB
/* Audio Library for Teensy 3.X
|
|
* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
|
|
*
|
|
* Development of this audio library was funded by PJRC.COM, LLC by sales of
|
|
* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
|
|
* open source software by purchasing Teensy or other PJRC products.
|
|
*
|
|
* 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, development funding 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.
|
|
*/
|
|
|
|
#ifndef output_i2s_f32_h_
|
|
#define output_i2s_f32_h_
|
|
|
|
#include "Arduino.h"
|
|
#include "AudioStream_F32.h"
|
|
#include "AudioStream.h"
|
|
#include "DMAChannel.h"
|
|
|
|
|
|
class AudioOutputI2S_F32 : public AudioStream_F32
|
|
{
|
|
//GUI: inputs:2, outputs:0 //this line used for automatic generation of GUI node
|
|
public:
|
|
AudioOutputI2S_F32(const AudioSettings_F32 &settings) : AudioStream_F32(2, inputQueueArray)
|
|
{
|
|
sample_rate_Hz = settings.sample_rate_Hz;
|
|
audio_block_samples = settings.audio_block_samples;
|
|
begin();
|
|
}
|
|
virtual void update(void);
|
|
void begin(void);
|
|
friend class AudioInputI2S_F32;
|
|
static void convert_f32_to_i16( float32_t *p_f32, int16_t *p_i16, int len) ;
|
|
|
|
protected:
|
|
//AudioOutputI2S_F32(const AudioSettings &settings): AudioStream_F32(2, inputQueueArray) {} // to be used only inside AudioOutputI2Sslave !!
|
|
static void config_i2s(void);
|
|
static audio_block_t *block_left_1st;
|
|
static audio_block_t *block_right_1st;
|
|
static bool update_responsibility;
|
|
static DMAChannel dma;
|
|
static void isr(void);
|
|
private:
|
|
static audio_block_t *block_left_2nd;
|
|
static audio_block_t *block_right_2nd;
|
|
static uint16_t block_left_offset;
|
|
static uint16_t block_right_offset;
|
|
audio_block_f32_t *inputQueueArray[2];
|
|
static float sample_rate_Hz;
|
|
static int audio_block_samples;
|
|
volatile uint8_t enabled = 1;
|
|
};
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|