memops: Provide function for S32 to float conversion

Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>

common/memops.c

@@ -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)
 {

common/memops.h

@@ -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);