hexianglong/snapclient
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add software volume mixer. Add fadeout

Browse Source
This commit is contained in:
raul
2022-12-04 22:35:43 +01:00
Unverified
parent 9d0a17552c
commit 3e038dd64f
4 changed files with 82 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
components/dsp_processor/dsp_processor.c
View File

@@ -37,10 +37,11 @@ static uint32_t currentChunkDurationMs = 0;
static ptype_t bq[8];
static double dynamic_vol = 1.0;
int
dsp_processor (char *audio, size_t chunk_size, dspFlows_t dspFlow)
{
double dynamic_vol = 1.0;
int16_t len = chunk_size / 4;
int16_t valint;
uint16_t i;
@@ -58,6 +59,17 @@ dsp_processor (char *audio, size_t chunk_size, dspFlows_t dspFlow)
{
case dspfStereo:
{
//set volume
if (dynamic_vol != 1.0)
{
for (i = 0; i < len; i++)
{
audio_tmp[i] = ((uint32_t) (dynamic_vol
* ((float)((int16_t)((audio_tmp[i] & 0xFFFF0000) >> 16)))) << 16)
+ (uint32_t) (dynamic_vol
* ((float)((int16_t)(audio_tmp[i] & 0xFFFF))));
}
}
}
break;
@@ -374,4 +386,14 @@ dsp_set_xoverfreq (uint8_t freqh, uint8_t freql, uint32_t samplerate)
}
}
}
void
dsp_set_vol (double volume)
{
if (volume >= 0 && volume <= 1.0)
{
ESP_LOGI (TAG, "Set volume to %f", volume);
dynamic_vol = volume;
}
}
#endif

1
components/dsp_processor/include/dsp_processor.h
View File

@@ -42,5 +42,6 @@ typedef struct pnode {
void dsp_setup_flow(double freq, uint32_t samplerate, uint32_t chunkDurationMs);
int dsp_processor(char *audio, size_t chunk_size, dspFlows_t dspFlow);
void dsp_set_xoverfreq(uint8_t, uint8_t, uint32_t);
void dsp_set_vol(double volume);
#endif /* _DSP_PROCESSOR_H_ */