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Fully remove floating point code from libmusepack. Introduce two small const arrays for precalculated scalefactors, correct the integer type of scalefactors to unsigned, migrate some metadata calculations to fixed point. No impact to decoder output.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30497 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2011-09-10 20:35:04 +00:00
parent d4249affc4
commit f163b405c0
6 changed files with 75 additions and 15 deletions
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10
apps/codecs/libmusepack/streaminfo.c
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@ -167,8 +167,8 @@ streaminfo_read_header_sv7(mpc_streaminfo* si, mpc_bits_reader * r)
else
si->samples -= MPC_DECODER_SYNTH_DELAY;
si->average_bitrate = (si->tag_offset - si->header_position) * 8.0
* si->sample_freq / si->samples;
si->average_bitrate = 8LL * (si->tag_offset - si->header_position)
* si->sample_freq / si->samples;
return check_streaminfo(si);
}
@ -216,8 +216,8 @@ streaminfo_read_header_sv8(mpc_streaminfo* si, const mpc_bits_reader * r_in,
si->bitrate = 0;
if ((si->samples - si->beg_silence) != 0)
si->average_bitrate = (si->tag_offset - si->header_position) * 8.0
* si->sample_freq / (si->samples - si->beg_silence);
si->average_bitrate = 8LL * (si->tag_offset - si->header_position)
* si->sample_freq / (si->samples - si->beg_silence);
return check_streaminfo(si);
}
@ -227,7 +227,7 @@ void streaminfo_encoder_info(mpc_streaminfo* si, const mpc_bits_reader * r_in)
{
mpc_bits_reader r = *r_in;
si->profile = mpc_bits_read(&r, 7) / 8.;
si->profile = mpc_bits_read(&r, 7); // to be divided by 8
/* rockbox: not used
si->profile_name = mpc_get_version_string(si->profile);
*/