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/*
* audio.cpp: A plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
* $Id$
*/
#include "audio.h"
cMarkAdAudio::cMarkAdAudio(int RecvNumber,MarkAdContext *maContext)
{
macontext=maContext;
recvnumber=RecvNumber;
mark.Comment=NULL;
mark.Position=0;
channels=0;
}
cMarkAdAudio::~cMarkAdAudio()
{
ResetMark();
}
void cMarkAdAudio::ResetMark()
{
if (mark.Comment) free(mark.Comment);
mark.Comment=NULL;
mark.Position=0;
}
bool cMarkAdAudio::AddMark(int Position, const char *Comment)
{
if (!Comment) return false;
if (mark.Comment)
{
int oldlen=strlen(mark.Comment);
mark.Comment=(char *) realloc(mark.Comment,oldlen+10+strlen(Comment));
if (!mark.Comment)
{
mark.Position=0;
return false;
}
strcat(mark.Comment," [");
strcat(mark.Comment,Comment);
strcat(mark.Comment,"]");
}
else
{
mark.Comment=strdup(Comment);
}
mark.Position=Position;
return true;
}
bool cMarkAdAudio::ChannelChange(int a, int b)
{
if ((a==0) || (b==0)) return false;
if (a!=b) return true;
return false;
}
MarkAdMark *cMarkAdAudio::Process(int LastIFrame)
{
ResetMark();
if (!LastIFrame) return NULL;
if (ChannelChange(macontext->Audio.Info.Channels,channels))
{
char *buf=NULL;
if (asprintf(&buf,"audio channel change from %i to %i (%i)", channels,
macontext->Audio.Info.Channels,LastIFrame)!=-1)
{
isyslog("markad [%i]: %s",recvnumber, buf);
AddMark(LastIFrame,buf);
free(buf);
}
}
channels=macontext->Audio.Info.Channels;
return &mark;
}
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