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add --fast and --best flags

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This commit is contained in:
Josh Coalson 2002-02-12 23:00:00 +00:00
parent 38c685405c
commit 0ac0a2eaa7
3 changed files with 38 additions and 3 deletions
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18
doc/documentation.html
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@ -217,7 +217,7 @@
<B><TT>flac</TT></B> assumes that files ending in ".wav" or that have the RIFF WAVE header present are WAVE files; this may be overridden with a command-line option; it also assumes that files ending in ".ogg" are Ogg-FLAC files. Other than this, <B><TT>flac</TT></B> makes no assumptions about file extensions, though the convention is that FLAC files have the extension ".flac" (or ".fla" on ancient file systems like FAT-16).
</P>
<P>
Before going into the full command-line description, a few other things help to sort it out: 1) <B><TT>flac</TT></B> encodes by default, so you must use <B>-d</B> to decode; 2) the options <B><TT>-0</TT></B> .. <B><TT>-8</TT></B> that control the compression level actually are just synonyms for different groups of specific encoding options (described later) and you can get the same effect by using the same options; 3) <B><TT>flac</TT></B> behaves similarly to gzip in the way it handles input and output files.
Before going into the full command-line description, a few other things help to sort it out: 1) <B><TT>flac</TT></B> encodes by default, so you must use <B>-d</B> to decode; 2) the options <B><TT>-0</TT></B> .. <B><TT>-8</TT></B> (or <B><TT>--fast</B></TT> and <B><TT>--best</B></TT>) that control the compression level actually are just synonyms for different groups of specific encoding options (described later) and you can get the same effect by using the same options; 3) <B><TT>flac</TT></B> behaves similarly to gzip in the way it handles input and output files.
</P>
<P>
<B><TT>flac</TT></B> will be invoked one of four ways, depending on whether you are encoding, decoding, testing, or analyzing:
@ -556,6 +556,22 @@
Synonymous with <TT>-l 12 -b 4608 -m -e -r 6</TT>
</TD>
</TR>
<TR>
<TD NOWRAP ALIGN="RIGHT" VALIGN="TOP" BGCOLOR="#F4F4CC">
<TT>--fast</TT>
</TD>
<TD>
Fastest compression. Currently synonymous with <TT>-0</TT>
</TD>
</TR>
<TR>
<TD NOWRAP ALIGN="RIGHT" VALIGN="TOP" BGCOLOR="#F4F4CC">
<TT>--best</TT>
</TD>
<TD>
Highest compression. Currently synonymous with <TT>-8</TT>
</TD>
</TR>
<TR>
<TD NOWRAP ALIGN="RIGHT" VALIGN="TOP" BGCOLOR="#F4F4CC">
<TT>-e</TT>

18
man/flac.sgml
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@ -397,6 +397,24 @@
</varlistentry>
<varlistentry>
<term><option>--fast</option></term>
<listitem>
<para>Fastest compression. Currently
synonymous with -0.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--best</option></term>
<listitem>
<para>Highest compression. Currently
synonymous with -8.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-e</option></term>

5
src/flac/main.c
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@ -230,7 +230,7 @@ int main(int argc, char *argv[])
aopts.do_residual_text = true;
else if(0 == strcmp(argv[i], "--a-rtext-"))
aopts.do_residual_text = false;
else if(0 == strcmp(argv[i], "-0")) {
else if(0 == strcmp(argv[i], "-0") || 0 == strcmp(argv[i], "--fast")) {
do_exhaustive_model_search = false;
do_escape_coding = false;
do_mid_side = false;
@ -313,7 +313,7 @@ int main(int argc, char *argv[])
rice_parameter_search_dist = 0;
max_lpc_order = 8;
}
else if(0 == strcmp(argv[i], "-8")) {
else if(0 == strcmp(argv[i], "-8") || 0 == strcmp(argv[i], "--best")) {
do_exhaustive_model_search = true;
do_escape_coding = false;
do_mid_side = true;
@ -614,6 +614,7 @@ int long_usage(const char *message, ...)
fprintf(out, " -6 : synonymous with -l 8 -b 4608 -m -r 4\n");
fprintf(out, " -7 : synonymous with -l 8 -b 4608 -m -e -r 6\n");
fprintf(out, " -8 : synonymous with -l 12 -b 4608 -m -e -r 6\n");
fprintf(out, " --fast, --best : synonymous with -0 and -8 respectively\n");
fprintf(out, " -e : do exhaustive model search (expensive!)\n");
fprintf(out, " -E : include escape coding in the entropy coder\n");
fprintf(out, " -l # : specify max LPC order; 0 => use only fixed predictors\n");