mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-01-29 03:32:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

stm32-f4discovery-cc256x: use sourc_ for recording vars

Browse Source
This commit is contained in:
Matthias Ringwald 2019-03-10 18:09:29 +01:00
parent bc4cd0ef3e
commit 509a8bd6bd
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
port/stm32-f4discovery-cc256x/src/hal_audio_f4discovery.c
View File

@ -69,10 +69,10 @@ static void (*audio_recorded_callback)(const int16_t * buffer, uint16_t num_samp
static int16_t input_buffer[INPUT_BUFFER_NUM_SAMPLES]; // single mono buffer
static uint16_t pdm_buffer[INPUT_BUFFER_NUM_SAMPLES*8];
static int sink_pcm_samples_per_ms;
static int sink_pdm_bytes_per_ms;
static int sink_pcm_samples_per_irq;
static int sink_pdm_samples_total;
static int source_pcm_samples_per_ms;
static int source_pdm_bytes_per_ms;
static int source_pcm_samples_per_irq;
static int source_pdm_samples_total;
void BSP_AUDIO_OUT_HalfTransfer_CallBack(void){
@ -233,19 +233,19 @@ static void generate_sine(void){
static void process_pdm(uint16_t * pdm_half_buffer){
int samples_needed = sink_pcm_samples_per_irq;
int samples_needed = source_pcm_samples_per_irq;
int16_t * pcm_buffer = input_buffer;
while (samples_needed){
// TODO: use int16_t for pcm samples
BSP_AUDIO_IN_PDMToPCM(pdm_half_buffer, (uint16_t *) pcm_buffer);
pdm_half_buffer += sink_pdm_bytes_per_ms / 2;
pcm_buffer += sink_pcm_samples_per_ms;
samples_needed -= sink_pcm_samples_per_ms;
pdm_half_buffer += source_pdm_bytes_per_ms / 2;
pcm_buffer += source_pcm_samples_per_ms;
samples_needed -= source_pcm_samples_per_ms;
}
// notify
(*audio_recorded_callback)(input_buffer, sink_pcm_samples_per_irq);
(*audio_recorded_callback)(input_buffer, source_pcm_samples_per_irq);
}
#endif
@ -262,7 +262,7 @@ void BSP_AUDIO_IN_TransferComplete_CallBack(void){
#ifdef SIMULATE_SINE
generate_sine();
#else
process_pdm(&pdm_buffer[sink_pdm_samples_total/2]);
process_pdm(&pdm_buffer[source_pdm_samples_total/2]);
#endif
}
@ -281,14 +281,14 @@ void hal_audio_source_init(uint8_t channels,
int decimation = 64;
// size of input & output of PDM filter depend on output frequency and decimation
sink_pcm_samples_per_irq = sample_rate / 1000 * 16; // 256@16 kHz, 128@8 kHz
source_pcm_samples_per_irq = sample_rate / 1000 * 16; // 256@16 kHz, 128@8 kHz
sink_pcm_samples_per_ms = sample_rate / 1000;
sink_pdm_bytes_per_ms = sink_pcm_samples_per_ms * decimation / 8;
source_pcm_samples_per_ms = sample_rate / 1000;
source_pdm_bytes_per_ms = source_pcm_samples_per_ms * decimation / 8;
sink_pdm_samples_total = INPUT_BUFFER_NUM_SAMPLES * 8 * sample_rate / 16000;
source_pdm_samples_total = INPUT_BUFFER_NUM_SAMPLES * 8 * sample_rate / 16000;
log_info("Source: PDM bytes per ms %u, PDM samples total %u - PCM samples per ms %u", sink_pdm_bytes_per_ms, sink_pdm_samples_total, sink_pcm_samples_per_ms);
log_info("Source: PDM bytes per ms %u, PDM samples total %u - PCM samples per ms %u", source_pdm_bytes_per_ms, source_pdm_samples_total, source_pcm_samples_per_ms);
audio_recorded_callback = buffer_recorded_callback;
recording_sample_rate = sample_rate;
@ -298,7 +298,7 @@ void hal_audio_source_init(uint8_t channels,
* @brief Start stream
*/
void hal_audio_source_start(void){
BSP_AUDIO_IN_Record(pdm_buffer, sink_pdm_samples_total);
BSP_AUDIO_IN_Record(pdm_buffer, source_pdm_samples_total);
recording_started = 1;
}