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send a 4 byte magic header including the codec version

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This commit is contained in:
Thomas Göttgens
2022-12-02 13:44:36 +01:00
parent 470e711383
commit bb1a9192eb
2 changed files with 28 additions and 17 deletions
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20
src/modules/esp32/AudioModule.h
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@@ -11,21 +11,35 @@
#include <codec2.h>
#include <ButterworthFilter.h>
#define ADC_BUFFER_SIZE_MAX 320
enum RadioState { standby, rx, tx };
const char c2_magic[3] = {0xc0, 0xde, 0xc2}; // Magic number for codec2 header
struct c2_header {
char magic[3];
char mode;
};
#define ADC_BUFFER_SIZE_MAX 320
#define PTT_PIN 39
#define I2S_PORT I2S_NUM_0
#define AUDIO_MODULE_RX_BUFFER 128
#define AUDIO_MODULE_MODE ModuleConfig_AudioConfig_Audio_Baud_CODEC2_700
class AudioModule : public SinglePortModule, private concurrency::OSThread
{
public:
unsigned char rx_encode_frame[Constants_DATA_PAYLOAD_LEN] = {};
unsigned char tx_encode_frame[Constants_DATA_PAYLOAD_LEN] = {};
c2_header tx_header = {};
int16_t speech[ADC_BUFFER_SIZE_MAX] = {};
int16_t output_buffer[ADC_BUFFER_SIZE_MAX] = {};
uint16_t adc_buffer[ADC_BUFFER_SIZE_MAX] = {};
int adc_buffer_size = 0;
uint16_t adc_buffer_index = 0;
int tx_encode_frame_index = 0;
int tx_encode_frame_index = sizeof(c2_header); // leave room for header
int rx_encode_frame_index = 0;
int encode_codec_size = 0;
int encode_frame_size = 0;