Hi,
Bad news that you failed - what went wrong and what was the workaround?
Thanks for the useful links, I'll go back to them if my approach fails.
Right now I'm stuck on a 'Broken pipe' exception while writing a stream from
the TTS-generated file to the console where Lame executes.
The approach is to execute Lame in a console which converts the inputstream
from PCm to mp3. The inputstream is generated from the file which the TTS
engine is still writing to.
It is the
bouts.write(b);
that generates the "broken pipe" exception.
Here is the code if anyone wants to help
brgds
Andreas
String command = "/bin/bash -c \"/usr/bin/lame -r -x -m m -b 32 -s 22.05 - - >
output.mp3\" ";
log.info("COMMAND: "+command );
BufferedOutputStream bouts=null;
BufferedInputStream bfins=null;
BufferedReader br2=null;
BufferedReader input=null;
try {
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec(command);
bouts=new BufferedOutputStream(pr.getOutputStream());//will
use this stream to send data to Lame
File tmpFile = new File(tmpOutputFileNamePath);// this is
the file where data is being written from the TTS
while(tmpFile.exists()==false)
{
log.info("File does not exist yet... going to sleep" );
Thread.sleep(500);
}
bfins = new BufferedInputStream(new
FileInputStream(tmpFile));
int b=0;
int noOfBytesAvailable=0;
// Read chunks of bytes and write them to the Lame input
stream
while(ttsThreadObj.isAlive()) // TODO might miss some data
when the thread has finished
{
noOfBytesAvailable= bfins.available();
if(noOfBytesAvailable>0)
{
log.info(noOfBytesAvailable +" bytes available" );
for( ;noOfBytesAvailable>0;noOfBytesAvailable--)
{
b=bfins.read();
bouts.write(b);
}
}
else {
log.info("Nothing available..." );
}
}
--- On Tue, 9/8/09, Aleksandar Kostadinov <[email protected]> wrote:
> From: Aleksandar Kostadinov <[email protected]>
> Subject: Re: [mp3encoder] text to speech application - will lame solve my
> problem?
> To: "MP3 encoders development list" <[email protected]>
> Date: Tuesday, September 8, 2009, 10:36 AM
> I have once tried to make a TTS
> engine write to a pipe file and have
> lame read from the pipe file but that failed badly. I found
> a
> workaround so didn't find a fix.
>
> Is this Linux? You could try some magic with ALSA. For
> example writing
> to file or memory and have lame read from there. As well
> I've heard
> sound servers are also quite capable (pulseaudio, etc.).
>
> And btw for me encoding is often at 50x on my old laptop so
> I'm not
> sure why encoding for you takes so much time.
>
> On Tue, Sep 8, 2009 at 10:44 AM, Andreas Karlsson<[email protected]>
> wrote:
> > Hi guys,
> > I'm into writing an application in JAVA that takes the
> output from a TTS (Text to speech) engine and outputs that
> as a mp3 stream on a webpage.
> > My problem is the TTS-engine generating raw PCM as
> output and I have to start sending the mp3-stream before the
> TTS is done since 10 second of speeach takes 10 second to
> generate.
> > I read some parts from the LAME documentation and I'm
> into trying calling the command line version of LAME (linux)
> from within my program with something like
> > cat PCMFileUnderConstruction | lame -r -m m -b 32 -s
> 22.05 - - > output.mp3
> >
> > The raw PCM is sampled with 22.05 kHz.
> >
> > Will this work, reading from a file that the TTS is
> still generating?
> > I want Lame to process the content being written to
> that file until the file PCMFileUnderConstruction is
> closed.
> >
> > brgds
> > Andreas
> >
> >
> >
> >
> >
> > _______________________________________________
> > mp3encoder mailing list
> > [email protected]
> > https://minnie.tuhs.org/mailman/listinfo/mp3encoder
> >
> _______________________________________________
> mp3encoder mailing list
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>
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