diff --git a/input_i2s_f32.cpp.xxx b/input_i2s_f32.cpp.xxx deleted file mode 100644 index 54c9ebd..0000000 --- a/input_i2s_f32.cpp.xxx +++ /dev/null @@ -1,253 +0,0 @@ -/* 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. - */ - -#include "input_i2s_f32.h" -#include "output_i2s_f32.h" -#include - -DMAMEM static uint32_t i2s_rx_buffer[AUDIO_BLOCK_SAMPLES]; -audio_block_t * AudioInputI2S_F32::block_left = NULL; -audio_block_t * AudioInputI2S_F32::block_right = NULL; -uint16_t AudioInputI2S_F32::block_offset = 0; -bool AudioInputI2S_F32::update_responsibility = false; -DMAChannel AudioInputI2S_F32::dma(false); - - -float AudioInputI2S_F32::sample_rate_Hz = AUDIO_SAMPLE_RATE; -int AudioInputI2S_F32::audio_block_samples = AUDIO_BLOCK_SAMPLES; - -#define I2S_BUFFER_TO_USE_BYTES (AudioOutputI2S_F32::audio_block_samples*sizeof(i2s_rx_buffer[0])) - -void AudioInputI2S_F32::begin(void) -{ - dma.begin(true); // Allocate the DMA channel first - - //block_left_1st = NULL; - //block_right_1st = NULL; - - // TODO: should we set & clear the I2S_RCSR_SR bit here? - AudioOutputI2S_F32::sample_rate_Hz = sample_rate_Hz; - AudioOutputI2S_F32::audio_block_samples = audio_block_samples; - AudioOutputI2S_F32::config_i2s(); - - CORE_PIN13_CONFIG = PORT_PCR_MUX(4); // pin 13, PTC5, I2S0_RXD0 -#if defined(KINETISK) - dma.TCD->SADDR = &I2S0_RDR0; - dma.TCD->SOFF = 0; - dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(1) | DMA_TCD_ATTR_DSIZE(1); - dma.TCD->NBYTES_MLNO = 2; - dma.TCD->SLAST = 0; - dma.TCD->DADDR = i2s_rx_buffer; - dma.TCD->DOFF = 2; - //dma.TCD->CITER_ELINKNO = sizeof(i2s_tx_buffer) / 2; //original - dma.TCD->CITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 2; - //dma.TCD->DLASTSGA = -sizeof(i2s_rx_buffer); //original - dma.TCD->DLASTSGA = -I2S_BUFFER_TO_USE_BYTES; - //dma.TCD->BITER_ELINKNO = sizeof(i2s_rx_buffer) / 2; //original - dma.TCD->BITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 2; - dma.TCD->CSR = DMA_TCD_CSR_INTHALF | DMA_TCD_CSR_INTMAJOR; -#endif - dma.triggerAtHardwareEvent(DMAMUX_SOURCE_I2S0_RX); - update_responsibility = update_setup(); - dma.enable(); - - I2S0_RCSR |= I2S_RCSR_RE | I2S_RCSR_BCE | I2S_RCSR_FRDE | I2S_RCSR_FR; - I2S0_TCSR |= I2S_TCSR_TE | I2S_TCSR_BCE; // TX clock enable, because sync'd to TX - dma.attachInterrupt(isr); - - -}; - -void AudioInputI2S_F32::isr(void) -{ - uint32_t daddr, offset; - const int16_t *src, *end; - int16_t *dest_left, *dest_right; - audio_block_t *left, *right; - - //digitalWriteFast(3, HIGH); -#if defined(KINETISK) - daddr = (uint32_t)(dma.TCD->DADDR); -#endif - dma.clearInterrupt(); - - //if (daddr < (uint32_t)i2s_rx_buffer + sizeof(i2s_rx_buffer) / 2) { - if (daddr < (uint32_t)i2s_rx_buffer + I2S_BUFFER_TO_USE_BYTES / 2) { - - // DMA is receiving to the first half of the buffer - // need to remove data from the second half - //src = (int16_t *)&i2s_rx_buffer[AUDIO_BLOCK_SAMPLES/2]; //original - //end = (int16_t *)&i2s_rx_buffer[AUDIO_BLOCK_SAMPLES]; //original - src = (int16_t *)&i2s_rx_buffer[audio_block_samples/2]; - end = (int16_t *)&i2s_rx_buffer[audio_block_samples]; - if (AudioInputI2S_F32::update_responsibility) AudioStream_F32::update_all(); - } else { - // DMA is receiving to the second half of the buffer - // need to remove data from the first half - src = (int16_t *)&i2s_rx_buffer[0]; - //end = (int16_t *)&i2s_rx_buffer[AUDIO_BLOCK_SAMPLES/2]; //original - end = (int16_t *)&i2s_rx_buffer[audio_block_samples/2]; - } - left = AudioInputI2S_F32::block_left; - right = AudioInputI2S_F32::block_right; - if (left != NULL && right != NULL) { - offset = AudioInputI2S_F32::block_offset; - //if (offset <= AUDIO_BLOCK_SAMPLES/2) { //original - if (offset <= ((uint32_t) audio_block_samples/2)) { - dest_left = &(left->data[offset]); - dest_right = &(right->data[offset]); - //AudioInputI2S_F32::block_offset = offset + AUDIO_BLOCK_SAMPLES/2; //original - AudioInputI2S_F32::block_offset = offset + audio_block_samples/2; - do { - //n = *src++; - //*dest_left++ = (int16_t)n; - //*dest_right++ = (int16_t)(n >> 16); - *dest_left++ = *src++; - *dest_right++ = *src++; - } while (src < end); - } - } - //digitalWriteFast(3, LOW); -} - -#define I16_TO_F32_NORM_FACTOR (3.051757812500000E-05) //which is 1/32768 -void AudioInputI2S_F32::convert_i16_to_f32( int16_t *p_i16, float32_t *p_f32, int len) { - for (int i=0; i= AUDIO_BLOCK_SAMPLES) { //original - if (block_offset >= audio_block_samples) { - // the DMA filled 2 blocks, so grab them and get the - // 2 new blocks to the DMA, as quickly as possible - out_left = block_left; - block_left = new_left; - out_right = block_right; - block_right = new_right; - block_offset = 0; - __enable_irq(); - - // then transmit the DMA's former blocks - - // but, first, convert them to F32 - audio_block_f32_t *out_left_f32=NULL, *out_right_f32=NULL; - out_left_f32 = AudioStream_F32::allocate_f32(); - if (out_left_f32 != NULL) { - out_right_f32 = AudioStream_F32::allocate_f32(); - if (out_right_f32 == NULL) { - AudioStream_F32::release(out_left_f32); - out_left_f32 = NULL; - } - } - if (out_left_f32 != NULL) { - //convert int16 to float 32 - convert_i16_to_f32(out_left->data, out_left_f32->data, audio_block_samples); - convert_i16_to_f32(out_right->data, out_right_f32->data, audio_block_samples); - - //transmit the f32 data! - AudioStream_F32::transmit(out_left_f32,0); - AudioStream_F32::transmit(out_right_f32,1); - AudioStream_F32::release(out_left_f32); - AudioStream_F32::release(out_right_f32); - } - AudioStream::release(out_left); - AudioStream::release(out_right); - //Serial.print("."); - } else if (new_left != NULL) { - // the DMA didn't fill blocks, but we allocated blocks - if (block_left == NULL) { - // the DMA doesn't have any blocks to fill, so - // give it the ones we just allocated - block_left = new_left; - block_right = new_right; - block_offset = 0; - __enable_irq(); - } else { - // the DMA already has blocks, doesn't need these - __enable_irq(); - AudioStream::release(new_left); - AudioStream::release(new_right); - } - } else { - // The DMA didn't fill blocks, and we could not allocate - // memory... the system is likely starving for memory! - // Sadly, there's nothing we can do. - __enable_irq(); - } -} - - -/******************************************************************/ - -/* -void AudioInputI2Sslave::begin(void) -{ - dma.begin(true); // Allocate the DMA channel first - - //block_left_1st = NULL; - //block_right_1st = NULL; - - AudioOutputI2Sslave::config_i2s(); - - CORE_PIN13_CONFIG = PORT_PCR_MUX(4); // pin 13, PTC5, I2S0_RXD0 -#if defined(KINETISK) - dma.TCD->SADDR = &I2S0_RDR0; - dma.TCD->SOFF = 0; - dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(1) | DMA_TCD_ATTR_DSIZE(1); - dma.TCD->NBYTES_MLNO = 2; - dma.TCD->SLAST = 0; - dma.TCD->DADDR = i2s_rx_buffer; - dma.TCD->DOFF = 2; - dma.TCD->CITER_ELINKNO = sizeof(i2s_rx_buffer) / 2; - dma.TCD->DLASTSGA = -sizeof(i2s_rx_buffer); - dma.TCD->BITER_ELINKNO = sizeof(i2s_rx_buffer) / 2; - dma.TCD->CSR = DMA_TCD_CSR_INTHALF | DMA_TCD_CSR_INTMAJOR; -#endif - dma.triggerAtHardwareEvent(DMAMUX_SOURCE_I2S0_RX); - update_responsibility = update_setup(); - dma.enable(); - - I2S0_RCSR |= I2S_RCSR_RE | I2S_RCSR_BCE | I2S_RCSR_FRDE | I2S_RCSR_FR; - I2S0_TCSR |= I2S_TCSR_TE | I2S_TCSR_BCE; // TX clock enable, because sync'd to TX - dma.attachInterrupt(isr); -} -*/ - - -