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Add support for MixRamp tags

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Adds mixrampdb and mixrampdelay commands.  Reads MIXRAP_START and
MIXRAMP_END tags from FLAC files and overlaps instead of crossfading.
This commit is contained in:
Tim Phipps
2010-03-21 18:21:47 +01:00
committed by Max Kellermann
parent e9b75d462c
commit e7a515c8b1
22 changed files with 478 additions and 19 deletions
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38
doc/protocol.xml
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@@ -338,6 +338,18 @@
<returnvalue>crossfade in seconds</returnvalue>
</para>
</listitem>
<listitem>
<para>
<varname>mixrampdb</varname>:
<returnvalue>mixramp threshold in dB</returnvalue>
</para>
</listitem>
<listitem>
<para>
<varname>mixrampdelay</varname>:
<returnvalue>mixrampdelay in seconds</returnvalue>
</para>
</listitem>
<listitem>
<para>
<varname>audio</varname>:
@@ -442,6 +454,32 @@
</para>
</listitem>
</varlistentry>
<varlistentry id="command_mixrampdb">
<term>
<cmdsynopsis>
<command>mixrampdb</command>
<arg choice="req"><replaceable>deciBels</replaceable></arg>
</cmdsynopsis>
</term>
<listitem>
<para>
Sets the threshold at which songs will be overlapped. Like crossfading but doesn't fade the track volume, just overlaps. The songs need to have MixRamp tags added by an external tool. 0dB is the normalized maximum volume so use negative values, I prefer -17dB. In the absence of mixramp tags crossfading will be used. See http://sourceforge.net/projects/mixramp
</para>
</listitem>
</varlistentry>
<varlistentry id="command_mixrampdelay">
<term>
<cmdsynopsis>
<command>mixrampdelay</command>
<arg choice="req"><replaceable>SECONDS</replaceable></arg>
</cmdsynopsis>
</term>
<listitem>
<para>
Additional time subtracted from the overlap calculated by mixrampdb. A value of "nan" disables MixRamp overlapping and falls back to crossfading.
</para>
</listitem>
</varlistentry>
<varlistentry id="command_random">
<term>
<cmdsynopsis>