audio_math.cpp File Reference

Go to the source code of this file.

Namespaces
	pfc

Functions
static audio_sample	noopt_calculate_peak (const audio_sample *p_src, t_size p_num)
static void	noopt_convert_from_int16 (const t_int16 *p_source, t_size p_count, audio_sample *p_output, float p_scale)
static void	noopt_convert_from_int32 (const t_int32 *p_source, t_size p_count, audio_sample *p_output, float p_scale)
static void	noopt_convert_to_16bit (const audio_sample *p_source, t_size p_count, t_int16 *p_output, float p_scale)
static void	noopt_convert_to_32bit (const audio_sample *p_source, t_size p_count, t_int32 *p_output, float p_scale)
static void	noopt_scale (const audio_sample *p_source, t_size p_count, audio_sample *p_output, audio_sample p_scale)

Function Documentation

static audio_sample noopt_calculate_peak ( const audio_sample *  p_src, t_size  p_num  )

static

Definition at line 3 of file audio_math.cpp.

{
    audio_sample peak = 0;
    t_size num = p_num;
    for(;num;num--)
    {
        audio_sample temp = (audio_sample)fabs(*(p_src++));
        if (temp>peak) peak = temp;
    }
    return peak;
}

static void noopt_convert_from_int16 ( const t_int16 *  p_source, t_size  p_count, audio_sample *  p_output, float  p_scale  )

inlinestatic

Definition at line 36 of file audio_math.cpp.

{
    t_size num = p_count;
    for(;num;num--)
        *(p_output++) = (audio_sample)*(p_source++) * p_scale;
}

static void noopt_convert_from_int32 ( const t_int32 *  p_source, t_size  p_count, audio_sample *  p_output, float  p_scale  )

inlinestatic

Definition at line 45 of file audio_math.cpp.

{
    t_size num = p_count;
    for(;num;num--)
        *(p_output++) = (audio_sample)*(p_source++) * p_scale;
}

static void noopt_convert_to_16bit ( const audio_sample *  p_source, t_size  p_count, t_int16 *  p_output, float  p_scale  )

inlinestatic

Definition at line 30 of file audio_math.cpp.

                                                                                                                         {
    for(t_size n=0;n<p_count;n++) {
        *(p_output++) = (t_int16) pfc::clip_t(pfc::audio_math::rint32(*(p_source++)*p_scale),-0x8000,0x7FFF);
    }
}

static void noopt_convert_to_32bit ( const audio_sample *  p_source, t_size  p_count, t_int32 *  p_output, float  p_scale  )

static

Definition at line 18 of file audio_math.cpp.

{
    t_size num = p_count;
    for(;num;--num)
    {
        t_int64 val = pfc::audio_math::rint64( *(p_source++) * p_scale );
        if (val < -(t_int64)0x80000000) val = -(t_int64)0x80000000;
        else if (val > 0x7FFFFFFF) val = 0x7FFFFFFF;
        *(p_output++) = (t_int32) val;
    }
}

static void noopt_scale ( const audio_sample *  p_source, t_size  p_count, audio_sample *  p_output, audio_sample  p_scale  )

inlinestatic

Definition at line 52 of file audio_math.cpp.

{
    for(t_size n=0;n<p_count;n++)
        p_output[n] = p_source[n] * p_scale;
}