From: "Lu, Han" han.lu@intel.com
The function adjust_waveform() is a component of generate_sine_wave(), and depended on bat->channels parameter. Add parameter "channels" to remove the dependency, and then adjust_waveform() can be applied on other use cases, e.g. a single channel sine wave generator.
Signed-off-by: Lu, Han han.lu@intel.com
diff --git a/bat/signal.c b/bat/signal.c index 15bea0a..2047f53 100644 --- a/bat/signal.c +++ b/bat/signal.c @@ -109,7 +109,8 @@ static int reorder(struct bat *bat, float *val, int frames) return 0; }
-static int adjust_waveform(struct bat *bat, float *val, int frames) +static int adjust_waveform(struct bat *bat, float *val, int frames, + int channels) { int i, nsamples, max; float factor, offset = 0.0; @@ -134,7 +135,7 @@ static int adjust_waveform(struct bat *bat, float *val, int frames) }
factor = max * RANGE_FACTOR; - nsamples = bat->channels * frames; + nsamples = channels * frames;
for (i = 0; i < nsamples; i++) val[i] = val[i] * factor + offset; @@ -171,7 +172,7 @@ int generate_sine_wave(struct bat *bat, int frames, void *buf) goto exit;
/* adjust amplitude and offset of waveform */ - err = adjust_waveform(bat, sinus_f, frames); + err = adjust_waveform(bat, sinus_f, frames, bat->channels); if (err != 0) goto exit;