oysteikt
/
mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

flac: added optimized converter for 16 bit 

flac_convert_16() runs a lot faster than the generic (and quite buggy)
function flac_convert().  flac_convert_16() is only used for
non-stereo files, since there is already flac_convert_stereo16().
This commit is contained in:
Max Kellermann 2008-09-23 23:59:55 +02:00
parent 7486c15088
commit 8c2bde70b0
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
src/inputPlugins/_flac_common.c
View File

@ -219,6 +219,19 @@ static void flac_convert_stereo16(int16_t *dest,
}
}
static void
flac_convert_16(int16_t *dest,
unsigned int num_channels,
const FLAC__int32 * const buf[],
unsigned int position, unsigned int end)
{
unsigned int c_chan;
for (; position < end; ++position)
for (c_chan = 0; c_chan < num_channels; c_chan++)
*dest++ = buf[c_chan][position];
}
static void flac_convert(unsigned char *dest,
unsigned int num_channels,
unsigned int bytes_per_sample,
@ -265,6 +278,10 @@ flac_common_write(FlacData *data, const FLAC__Frame * frame,
flac_convert_stereo16((int16_t*)data->chunk,
buf, c_samp,
c_samp + num_samples);
else if (bytes_per_sample == 2)
flac_convert_16((int16_t*)data->chunk,
num_channels, buf, c_samp,
c_samp + num_samples);
else
flac_convert(data->chunk,
num_channels, bytes_per_sample, buf,