laiyp/lib_xua
1
0
Fork 0
forked from PAWPAW-Mirror/lib_xua
Code Pull Requests Activity

Add ability to upsample I2S out (I2S_SAMPLE_FACTOR_OUT). Also fixed new

Browse Source 
lib_src coeff naming.
This commit is contained in:
louis
2017-01-25 12:50:38 +00:00
parent 300a68f5e7
commit 4263b9c9d4
1 changed files with 51 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
module_usb_audio/audio_io/audio_io.xc
View File

@@ -80,6 +80,16 @@ static int64_t outputDs3Sum[I2S_DOWNSAMPLE_CHANS_OUT];
#endif // (I2S_DOWNSAMPLE_FACTOR_OUT > 1)
#endif // (I2S_DOWNSAMPLE_FACTOR_IN > 1) || (I2S_DOWNSAMPLE_FACTOR_OUT > 1)
#ifndef I2S_UPSAMPLE_FACTOR_OUT
#define I2S_UPSAMPLE_FACTOR_OUT 1
#endif
static int outUpsamplingCounter = 0;
#if (I2S_UPSAMPLE_FACTOR_OUT > 1)
#include "src.h"
static int32_t us3OutputDelayLine[I2S_CHANS_DAC][24];
#endif /* (I2S_UPSAMPLE_FACTOR_OUT > 1) */
#if (DSD_CHANS_DAC != 0)
extern buffered out port:32 p_dsd_dac[DSD_CHANS_DAC];
extern buffered out port:32 p_dsd_clk;
@@ -526,6 +536,10 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
memset(&ds3Data.inputDelayLine, 0, sizeof ds3Data);
#endif
#if (I2S_UPSAMPLE_FACTOR_OUT > 1)
memset(us3OutputDelayLine, 0, sizeof us3OutputDelayLine);
#endif
unsigned command = DoSampleTransfer(c_out, readBuffNo, underflowWord, i_audMan);
#ifdef ADAT_TX
@@ -565,6 +579,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
while (!syncError)
#endif // CODEC_MASTER
{
#if (DSD_CHANS_DAC != 0) && (NUM_USB_CHAN_OUT > 0)
if(dsdMode == DSD_MODE_NATIVE)
{
@@ -711,7 +726,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
src_ds3_voice_add_final_sample(
inputDs3Sum[((frameCount-2)&(I2S_CHANS_PER_FRAME-1))+i],
ds3Data.inputDelayLine[((frameCount-2)&(I2S_CHANS_PER_FRAME-1))+i][inDownsamplingCounter],
src_ff3v_ds3_voice_coefs[inDownsamplingCounter],
src_ff3v_fir_coefs[inDownsamplingCounter],
samplesIn[readBuffNo][((frameCount-2)&(I2S_CHANS_PER_FRAME-1))]);
}
else
@@ -720,7 +735,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
src_ds3_voice_add_sample(
inputDs3Sum[((frameCount-2)&(I2S_CHANS_PER_FRAME-1))+i],
ds3Data.inputDelayLine[((frameCount-2)&(I2S_CHANS_PER_FRAME-1))+i][inDownsamplingCounter],
src_ff3v_ds3_voice_coefs[inDownsamplingCounter],
src_ff3v_fir_coefs[inDownsamplingCounter],
samplesIn[readBuffNo][((frameCount-2)&(I2S_CHANS_PER_FRAME-1))]);
}
#endif // (I2S_DOWNSAMPLE_FACTOR_IN > 1)
@@ -751,6 +766,17 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
/* Output "even" channel to DAC (i.e. left) */
for(int i = 0; i < I2S_CHANS_DAC; i+=I2S_CHANS_PER_FRAME)
{
#if (I2S_UPSAMPLE_FACTOR_OUT > 1)
if(outUpsamplingCounter == 0) {
samplesOut[frameCount+i] = src_us3_voice_input_sample(us3OutputDelayLine[i],
src_ff3v_fir_coefs[2],
samplesOut[frameCount+i]);
} else { /* outUpsamplingCounter is 1 or 2 */
samplesOut[frameCount+i] = src_us3_voice_get_next_sample(us3OutputDelayLine[i],
src_ff3v_fir_coefs[2-outUpsamplingCounter]);
}
#endif /* (I2S_UPSAMPLE_FACTOR_OUT > 1) */
p_i2s_dac[index++] <: bitrev(samplesOut[frameCount +i]);
}
#endif
@@ -849,7 +875,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
src_ds3_voice_add_final_sample(
inputDs3Sum[((frameCount-1)&(I2S_CHANS_PER_FRAME-1))+i],
ds3Data.inputDelayLine[((frameCount-1)&(I2S_CHANS_PER_FRAME-1))+i][inDownsamplingCounter],
src_ff3v_ds3_voice_coefs[inDownsamplingCounter],
src_ff3v_fir_coefs[inDownsamplingCounter],
samplesIn[readBuffNo][((frameCount-1)&(I2S_CHANS_PER_FRAME-1))+i]);
}
else
@@ -858,7 +884,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
src_ds3_voice_add_sample(
inputDs3Sum[((frameCount-1)&(I2S_CHANS_PER_FRAME-1))+i],
ds3Data.inputDelayLine[((frameCount-1)&(I2S_CHANS_PER_FRAME-1))+i][inDownsamplingCounter],
src_ff3v_ds3_voice_coefs[inDownsamplingCounter],
src_ff3v_fir_coefs[inDownsamplingCounter],
samplesIn[readBuffNo][((frameCount-1)&(I2S_CHANS_PER_FRAME-1))+i]);
}
#endif // ((I2S_DOWNSAMPLE_FACTOR_IN > 1) && !I2S_DOWNSAMPLE_MONO_IN)
@@ -886,6 +912,18 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
#pragma loop unroll
for(int i = 1; i < I2S_CHANS_DAC; i+=I2S_CHANS_PER_FRAME)
{
#if (I2S_UPSAMPLE_FACTOR_OUT > 1)
if(outUpsamplingCounter == 0) {
samplesOut[frameCount+i] = src_us3_voice_input_sample(us3OutputDelayLine[i],
src_ff3v_fir_coefs[2],
samplesOut[frameCount+i]);
} else { /* outUpsamplingCounter is 1 or 2 */
samplesOut[frameCount+i] = src_us3_voice_get_next_sample(us3OutputDelayLine[i],
src_ff3v_fir_coefs[2-outUpsamplingCounter]);
}
#endif /* (I2S_UPSAMPLE_FACTOR_OUT > 1) */
p_i2s_dac[index++] <: bitrev(samplesOut[frameCount + i]);
}
#endif
@@ -976,6 +1014,15 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
{
++inDownsamplingCounter;
}
if((I2S_UPSAMPLE_FACTOR_OUT - 1) == outUpsamplingCounter)
{
outUpsamplingCounter = 0;
}
else
{
++outUpsamplingCounter;
}
}
}
}