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memops: Provide function for S32 to float conversion 

Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
This commit is contained in:
Timo Wischer 2018-11-20 15:40:26 +01:00 committed by Filipe Coelho
parent 4455fe020c
commit 244fc27e29
2 changed files with 15 additions and 0 deletions
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13
common/memops.c
View File

@ -73,6 +73,7 @@
So, for now (October 2008) we use 2^(N-1)-1 as the scaling factor.
*/
#define SAMPLE_32BIT_SCALING 0x7FFFFFFF
#define SAMPLE_24BIT_SCALING 8388607
#define SAMPLE_16BIT_SCALING 32767
@ -240,6 +241,8 @@ void sample_move_dS_floatLE (char *dst, jack_default_audio_sample_t *src, unsign
S - sample is a jack_default_audio_sample_t, currently (October 2008) a 32 bit floating point value
Ss - like S but reverse endian from the host CPU
32 - sample is an signed 32 bit integer value
32s - like 32 but reverse endian from the host CPU
32u24 - sample is an signed 32 bit integer value, but data is in lower 24 bits only
32u24s - like 32u24 but reverse endian from the host CPU
24 - sample is an signed 24 bit integer value
@ -308,6 +311,11 @@ void sample_move_d32u24_sSs (char *dst, jack_default_audio_sample_t *src, unsign
sample_move_d32scal_sSs (dst, src, nsamples, dst_skip, state, SAMPLE_24BIT_SCALING);
}
void sample_move_d32_sSs (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state)
{
sample_move_d32scal_sSs (dst, src, nsamples, dst_skip, state, SAMPLE_32BIT_SCALING);
}
static inline void sample_move_d32scal_sS (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state, const int32_t scaling)
{
@ -398,6 +406,11 @@ void sample_move_d32u24_sS (char *dst, jack_default_audio_sample_t *src, unsigne
sample_move_d32scal_sS (dst, src, nsamples, dst_skip, state, SAMPLE_24BIT_SCALING);
}
void sample_move_d32_sS (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state)
{
sample_move_d32scal_sS (dst, src, nsamples, dst_skip, state, SAMPLE_32BIT_SCALING);
}
void sample_move_dS_s32u24s (jack_default_audio_sample_t *dst, char *src, unsigned long nsamples, unsigned long src_skip)
{

2
common/memops.h
View File

@ -53,6 +53,8 @@ void sample_move_floatLE_sSs (jack_default_audio_sample_t *dst, char *src, unsig
void sample_move_dS_floatLE (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
/* integer functions */
void sample_move_d32_sSs (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_d32_sS (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_d32u24_sSs (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_d32u24_sS (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);
void sample_move_d24_sSs (char *dst, jack_default_audio_sample_t *src, unsigned long nsamples, unsigned long dst_skip, dither_state_t *state);