/* output_i2s_f32.h - Input block of float samples from I2S * * Adapted to F32 output and Open Audio AudioSettings_F32 by Chip Audette * Modified for Teensy 4.x Bob Larkin June 2020 * * Direct from: 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. */ /* Extended by Chip Audette, OpenAudio, May 2019 * Converted to F32 and to variable audio block length * The F32 conversion is under the MIT License. Use at your own risk. */ #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(void) : AudioStream_F32(2, inputQueueArray) { begin();} //uses default AUDIO_SAMPLE_RATE and BLOCK_SIZE_SAMPLES from AudioStream.h 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); void begin(bool); void sub_begin_i32(void); void sub_begin_i16(void); friend class AudioInputI2S_F32; static void scale_f32_to_i16( float32_t *p_f32, float32_t *p_i16, int len) ; static void scale_f32_to_i24( float32_t *p_f32, float32_t *p_i16, int len) ; static void scale_f32_to_i32( float32_t *p_f32, float32_t *p_i32, int len) ; static float setI2SFreq(const float); /* I16 version supported these for T4: #if defined(__IMXRT1062__) friend class AudioOutputI2SQuad; friend class AudioInputI2SQuad; friend class AudioOutputI2SHex; friend class AudioInputI2SHex; friend class AudioOutputI2SOct; friend class AudioInputI2SOct; #endif */ protected: //AudioOutputI2S_F32(const AudioSettings &settings): AudioStream_F32(2, inputQueueArray) {} // to be used only inside AudioOutputI2Sslave !! static void config_i2s(void); static void config_i2s(bool); static void config_i2s_i16(void); static void config_i2s_i32(void); static audio_block_f32_t *block_left_1st; static audio_block_f32_t *block_right_1st; static bool update_responsibility; static DMAChannel dma; static void isr_16(void); static void isr_32(void); private: static audio_block_f32_t *block_left_2nd; static audio_block_f32_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 #if 0 /////////////////////////SAVE ////////////////////// /* output_i2s_f32.h - Input block of float samples from I2S * * Adapted to F32 output and Open Audio AudioSettings_F32 by Chip Audette * Modified for Teensy 4.x Bob Larkin June 2020 * * Direct from: * 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: // To use default AUDIO_SAMPLE_RATE and BLOCK_SIZE_SAMPLES from AudioStream.h: AudioOutputI2S_F32(void) : AudioStream_F32(2, inputQueueArray) { begin();} // Or, to allow for change in either: 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) ; // NOT IN TYMPAN /* I16 version supported these for T4: #if defined(__IMXRT1062__) friend class AudioOutputI2SQuad; friend class AudioInputI2SQuad; friend class AudioOutputI2SHex; friend class AudioInputI2SHex; friend class AudioOutputI2SOct; friend class AudioInputI2SOct; #endif */ ///////////////////TYMPAN public: ///////////////// //void begin(void); void begin(bool); void sub_begin_i32(void); void sub_begin_i16(void); friend class AudioInputI2S_F32; static void scale_f32_to_i16( float32_t *p_f32, float32_t *p_i16, int len) ; static void scale_f32_to_i24( float32_t *p_f32, float32_t *p_i16, int len) ; static void scale_f32_to_i32( float32_t *p_f32, float32_t *p_i32, int len) ; static float setI2SFreq(const float); //////////////////////////////////////////////// protected: //AudioOutputI2S_F32(const AudioSettings &settings): AudioStream_F32(2, inputQueueArray) {} // to be used only inside AudioOutputI2Sslave !! static void config_i2s(void); static audio_block_f32_t *block_left_1st; static audio_block_f32_t *block_right_1st; static bool update_responsibility; static DMAChannel dma; static void isr_f32(void); private: static audio_block_f32_t *block_left_2nd; static audio_block_f32_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 #endif // #if 0