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lowercasing filenames, part3

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@576 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz 2008-08-28 12:36:57 +00:00
parent d158df697d
commit 1cfc5cc4ce
71 changed files with 0 additions and 0 deletions
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74
pico/sound/mix.c Normal file
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@ -0,0 +1,74 @@
// some code for sample mixing
// (c) Copyright 2006-2007, Grazvydas "notaz" Ignotas
#define MAXOUT (+32767)
#define MINOUT (-32768)
/* limitter */
#define Limit(val, max,min) { \
if ( val > max ) val = max; \
else if ( val < min ) val = min; \
}
void mix_32_to_16l_stereo(short *dest, int *src, int count)
{
int l, r;
for (; count > 0; count--)
{
l = r = *dest;
l += *src++;
r += *src++;
Limit( l, MAXOUT, MINOUT );
Limit( r, MAXOUT, MINOUT );
*dest++ = l;
*dest++ = r;
}
}
void mix_32_to_16_mono(short *dest, int *src, int count)
{
int l;
for (; count > 0; count--)
{
l = *dest;
l += *src++;
Limit( l, MAXOUT, MINOUT );
*dest++ = l;
}
}
void mix_16h_to_32(int *dest_buf, short *mp3_buf, int count)
{
while (count--)
{
*dest_buf++ += *mp3_buf++ >> 1;
}
}
void mix_16h_to_32_s1(int *dest_buf, short *mp3_buf, int count)
{
count >>= 1;
while (count--)
{
*dest_buf++ += *mp3_buf++ >> 1;
*dest_buf++ += *mp3_buf++ >> 1;
mp3_buf += 1*2;
}
}
void mix_16h_to_32_s2(int *dest_buf, short *mp3_buf, int count)
{
count >>= 1;
while (count--)
{
*dest_buf++ += *mp3_buf++ >> 1;
*dest_buf++ += *mp3_buf++ >> 1;
mp3_buf += 3*2;
}
}