wirtz
/
OpenAudio_ArduinoLibrary
mirror of https://github.com/chipaudette/OpenAudio_ArduinoLibrary.git
1
0
Fork 0
Code Issues Releases Wiki Activity

I2S output was sending 32 bits already, but only 16 were used. Now, send all available precision.

Browse Source 
Basically, I re-did jcj83429's pull request, which got outdated, to current code: https://github.com/chipaudette/OpenAudio_ArduinoLibrary/pull/8
pull/14/head
joerg 2 years ago
parent cce309ffd2
commit fa6885d4ff
1 changed files with 26 additions and 26 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 52
      output_i2s_f32.cpp

52
output_i2s_f32.cpp
Unescape View File

@ -164,7 +164,7 @@ uint16_t AudioOutputI2S_F32::block_left_offset = 0;
uint16_t AudioOutputI2S_F32::block_right_offset = 0;
bool AudioOutputI2S_F32::update_responsibility = false;
DMAChannel AudioOutputI2S_F32::dma(false);
DMAMEM __attribute__((aligned(32))) static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES];
DMAMEM __attribute__((aligned(32))) static uint64_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES];
//DMAMEM static int32_t i2s_tx_buffer[2*AUDIO_BLOCK_SAMPLES]; //2 channels at 32-bits per sample. Local "audio_block_samples" should be no larger than global "AUDIO_BLOCK_SAMPLES"
float AudioOutputI2S_F32::sample_rate_Hz = AUDIO_SAMPLE_RATE;
@ -199,18 +199,18 @@ void AudioOutputI2S_F32::begin(bool transferUsing32bit) {
CORE_PIN22_CONFIG = PORT_PCR_MUX(6); // pin 22, PTC1, I2S0_TXD0
dma.TCD->SADDR = i2s_tx_buffer;
dma.TCD->SOFF = 2;
dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(1) | DMA_TCD_ATTR_DSIZE(1);
dma.TCD->NBYTES_MLNO = 2;
dma.TCD->SOFF = 4;
dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(2) | DMA_TCD_ATTR_DSIZE(2);
dma.TCD->NBYTES_MLNO = 4;
//dma.TCD->SLAST = -sizeof(i2s_tx_buffer);//orig from Teensy Audio Library 2020-10-31
dma.TCD->SLAST = -I2S_BUFFER_TO_USE_BYTES;
dma.TCD->DADDR = (void *)((uint32_t)&I2S0_TDR0 + 2);
dma.TCD->DADDR = (void *)((uint32_t)&I2S0_TDR0 + 0);
dma.TCD->DOFF = 0;
//dma.TCD->CITER_ELINKNO = sizeof(i2s_tx_buffer) / 2; //orig from Teensy Audio Library 2020-10-31
dma.TCD->CITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 2;
dma.TCD->CITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 4;
dma.TCD->DLASTSGA = 0;
//dma.TCD->BITER_ELINKNO = sizeof(i2s_tx_buffer) / 2;//orig from Teensy Audio Library 2020-10-31
dma.TCD->BITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 2;
dma.TCD->BITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 4;
dma.TCD->CSR = DMA_TCD_CSR_INTHALF | DMA_TCD_CSR_INTMAJOR;
dma.triggerAtHardwareEvent(DMAMUX_SOURCE_I2S0_TX);
dma.enable(); //newer location of this line in Teensy Audio library
@ -222,19 +222,19 @@ void AudioOutputI2S_F32::begin(bool transferUsing32bit) {
CORE_PIN7_CONFIG = 3; //1:TX_DATA0
dma.TCD->SADDR = i2s_tx_buffer;
dma.TCD->SOFF = 2;
dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(1) | DMA_TCD_ATTR_DSIZE(1);
dma.TCD->NBYTES_MLNO = 2;
dma.TCD->SOFF = 4;
dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(2) | DMA_TCD_ATTR_DSIZE(2);
dma.TCD->NBYTES_MLNO = 4;
//dma.TCD->SLAST = -sizeof(i2s_tx_buffer);//orig from Teensy Audio Library 2020-10-31
dma.TCD->SLAST = -I2S_BUFFER_TO_USE_BYTES;
dma.TCD->DOFF = 0;
//dma.TCD->CITER_ELINKNO = sizeof(i2s_tx_buffer) / 2; //orig from Teensy Audio Library 2020-10-31
dma.TCD->CITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 2;
dma.TCD->CITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 4;
dma.TCD->DLASTSGA = 0;
//dma.TCD->BITER_ELINKNO = sizeof(i2s_tx_buffer) / 2;//orig from Teensy Audio Library 2020-10-31
dma.TCD->BITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 2;
dma.TCD->BITER_ELINKNO = I2S_BUFFER_TO_USE_BYTES / 4;
dma.TCD->CSR = DMA_TCD_CSR_INTHALF | DMA_TCD_CSR_INTMAJOR;
dma.TCD->DADDR = (void *)((uint32_t)&I2S1_TDR0 + 2);
dma.TCD->DADDR = (void *)((uint32_t)&I2S1_TDR0 + 0);
dma.triggerAtHardwareEvent(DMAMUX_SOURCE_SAI1_TX);
dma.enable(); //newer location of this line in Teensy Audio library
@ -253,7 +253,7 @@ void AudioOutputI2S_F32::begin(bool transferUsing32bit) {
void AudioOutputI2S_F32::isr(void)
{
#if defined(KINETISK) || defined(__IMXRT1062__)
int16_t *dest;
int32_t *dest;
audio_block_f32_t *blockL, *blockR;
uint32_t saddr, offsetL, offsetR;
@ -264,12 +264,12 @@ void AudioOutputI2S_F32::isr(void)
// DMA is transmitting the first half of the buffer
// so we must fill the second half
//dest = (int16_t *)&i2s_tx_buffer[AUDIO_BLOCK_SAMPLES/2]; //original Teensy Audio
dest = (int16_t *)&i2s_tx_buffer[audio_block_samples/2]; //this will be diff if we were to do 32-bit samples
dest = (int32_t *)&i2s_tx_buffer[audio_block_samples/2]; //this will be diff if we were to do 32-bit samples
if (AudioOutputI2S_F32::update_responsibility) AudioStream_F32::update_all();
} else {
// DMA is transmitting the second half of the buffer
// so we must fill the first half
dest = (int16_t *)i2s_tx_buffer;
dest = (int32_t *)i2s_tx_buffer;
}
blockL = AudioOutputI2S_F32::block_left_1st;
@ -277,15 +277,15 @@ void AudioOutputI2S_F32::isr(void)
offsetL = AudioOutputI2S_F32::block_left_offset;
offsetR = AudioOutputI2S_F32::block_right_offset;
int16_t *d = dest;
int32_t *d = dest;
if (blockL && blockR) {
//memcpy_tointerleaveLR(dest, blockL->data + offsetL, blockR->data + offsetR);
//memcpy_tointerleaveLRwLen(dest, blockL->data + offsetL, blockR->data + offsetR, audio_block_samples/2);
float32_t *pL = blockL->data + offsetL;
float32_t *pR = blockR->data + offsetR;
for (int i=0; i < audio_block_samples/2; i++) {
*d++ = (int16_t) *pL++;
*d++ = (int16_t) *pR++; //interleave
*d++ = (int32_t) *pL++;
*d++ = (int32_t) *pR++; //interleave
//*d++ = 0;
//*d++ = 0;
}
@ -294,15 +294,15 @@ void AudioOutputI2S_F32::isr(void)
} else if (blockL) {
//memcpy_tointerleaveLR(dest, blockL->data + offsetL, blockR->data + offsetR);
float32_t *pL = blockL->data + offsetL;
for (int i=0; i < audio_block_samples / 2 * 2; i+=2) { *(d+i) = (int16_t) *pL++; } //interleave
for (int i=0; i < audio_block_samples / 2 * 2; i+=2) { *(d+i) = (int32_t) *pL++; } //interleave
offsetL += audio_block_samples / 2;
} else if (blockR) {
float32_t *pR = blockR->data + offsetR;
for (int i=0; i < audio_block_samples /2 * 2; i+=2) { *(d+i) = (int16_t) *pR++; } //interleave
for (int i=0; i < audio_block_samples /2 * 2; i+=2) { *(d+i) = (int32_t) *pR++; } //interleave
offsetR += audio_block_samples / 2;
} else {
//memset(dest,0,AUDIO_BLOCK_SAMPLES * 2);
memset(dest,0,audio_block_samples * 2);
memset(dest,0,audio_block_samples * 4);
return;
}
@ -664,8 +664,8 @@ void AudioOutputI2S_F32::update(void)
//scale F32 to Int32
//block_f32_scaled = AudioStream_F32::allocate_f32();
//scale_f32_to_i32(block_f32->data, block_f32_scaled->data, audio_block_samples);
scale_f32_to_i16(block_f32->data, block_f32_scaled->data, audio_block_samples);
scale_f32_to_i32(block_f32->data, block_f32_scaled->data, audio_block_samples);
//scale_f32_to_i16(block_f32->data, block_f32_scaled->data, audio_block_samples);
//count++;
//if (count > 100) {
@ -709,8 +709,8 @@ void AudioOutputI2S_F32::update(void)
//scale F32 to Int32
//block_f32_scaled = AudioStream_F32::allocate_f32();
//scale_f32_to_i32(block_f32->data, block_f32_scaled->data, audio_block_samples);
scale_f32_to_i16(block_f32->data, block_f32_scaled->data, audio_block_samples);
scale_f32_to_i32(block_f32->data, block_f32_scaled->data, audio_block_samples);
//scale_f32_to_i16(block_f32->data, block_f32_scaled->data, audio_block_samples);
__disable_irq();
if (block_right_1st == NULL) {

Write Preview
Loading…
Cancel
Save