[MP3 ENCODER] lame DLL

2002-11-25 Thread kenza akesbi 



Hi
i'm trying to use the lameEnc.dll. i tried 
compilied the example.dsp existing in the last zip version of lame but it gives 
methe following errors: 

Assemblingnasm: error: more than one input file 
specifiednasm: error: more than one input file specifiednasm: error: 
more than one input file specifiedtype `nasm -h' for helpError executing 
c:\winnt\system32\cmd.exe.

Example.exe - 3 error(s), 0 warning(s)

Any help please
kenza

[MP3 ENCODER] Lame DLL

2002-07-30 Thread Martin Ruckert 

There are two problems I have with the lame encoder DLL:

1. there is no way to set the Noise shaping  psycho acoustic algorithms:
   corresponding to the comandline arguments  of Lame
-q argarg = 0...9.  Default  -q 5 
-q 0:  Highest quality, very slow 
-q 9:  Poor quality, but fast 
-h  Same as -q 2.   Recommended.
-f  Same as -q 7.   Fast, ok quality
  Hence you are stuck with -q 5 (which often is not good enough or not fast 
enough:

2. This is a bug (and I hope someone can fix it for me or explain how I can
put a fix into the official lame cvs repository myself.)

If you produce mp3 streaming audio, it is common 
   to use average bitrate (--abr  ) and not have a VBR tag 
  (since it has to be added to the beginning of the stream 
after all of the stream is written. Impossible) 

The only place to set the WriteVbrTag is here:
if ( lameConfig.format.LHV1.bEnableVBR )
{
lame_set_VBR( gfp, vbr_default );

lame_set_VBR_q( gfp, lameConfig.format.LHV1.nVBRQuality );

if (lameConfig.format.LHV1.bWriteVBRHeader==TRUE)
{
lame_set_bWriteVbrTag( gfp, 1 );
}
else
{
lame_set_bWriteVbrTag( gfp, 0 );
}
}
else
{
lame_set_VBR( gfp, vbr_off );
}
it requires EnableVBR==TRUE and WriteVBRHeader==FALSE

To get average bitrate you have to set the average bitrate to a positive 
value:
// Use ABR?
if (lameConfig.format.LHV1.dwVbrAbr_bps0)
{
// set VBR to ABR
lame_set_VBR( gfp, vbr_abr );

unfortunately next comes:
// Use VBR?
if ( lameConfig.format.LHV1.bEnableVBR )
{
switch ( lameConfig.format.LHV1.nVbrMethod)
{
case VBR_METHOD_NONE:
lame_set_VBR( gfp, vbr_off );
break;

case VBR_METHOD_DEFAULT:
lame_set_VBR( gfp, vbr_default ); 
break;
. . .
case VBR_METHOD_ABR:
lame_set_VBR( gfp, vbr_abr ); 
break;

and sice we have enabled VBR and VbrMethod is an undocumented feature (not 
described in LameDLLInterface.htm) we are stuck with the default VbrMethod==0 
that is VBR_METHOD_DEFAULT and we are back to variable bitrate and not 
average bitrate.

Solutions:
1. Make VbrMethod a documented feature.
2. Remove the test for WriteVBRHeader and the call to lame_set_bWriteVbrTag
   from its nesting inside the EnableVBR test and make it an independent test.

Best use both solutions 1 and 2.


Who can help ?

Martin Ruckert


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Re: [MP3 ENCODER] Lame DLL

2002-07-30 Thread Albert Faber 

Martin,
1) You can set the quality using the format.LHV1.nQuality parameter
2) To get ABR with You have to set the following parameters (using the
latest CVS code, it already
contains the modifcation you have suggested)

lameConfig.format.LHV1.nVbrMethod = VBR_METHOD_ABR
lameConfig.format.LHV1.bEnableVBR = TRUE;
lameConfig.format.LHV1.bWriteVBRHeader = FALSE;
lameConfig.format.LHV1.dwVbrAbr_bps = (desired value)

I'll change the documentation later tonight and add the nVbrMethod paramter
description
Albert

- Original Message -
From: Martin Ruckert [EMAIL PROTECTED]
To: mp3 encoder list [EMAIL PROTECTED]
Sent: 30 July 2002 ?. 12:25 PM
Subject: [MP3 ENCODER] Lame DLL


 There are two problems I have with the lame encoder DLL:

 1. there is no way to set the Noise shaping  psycho acoustic algorithms:
corresponding to the comandline arguments  of Lame
 -q argarg = 0...9.  Default  -q 5
 -q 0:  Highest quality, very slow
 -q 9:  Poor quality, but fast
 -h  Same as -q 2.   Recommended.
 -f  Same as -q 7.   Fast, ok quality
   Hence you are stuck with -q 5 (which often is not good enough or not
fast
 enough:

 2. This is a bug (and I hope someone can fix it for me or explain how I
can
 put a fix into the official lame cvs repository myself.)

 If you produce mp3 streaming audio, it is common
to use average bitrate (--abr  ) and not have a VBR tag
   (since it has to be added to the beginning of the stream
 after all of the stream is written. Impossible)

 The only place to set the WriteVbrTag is here:
 if ( lameConfig.format.LHV1.bEnableVBR )
 {
 lame_set_VBR( gfp, vbr_default );

 lame_set_VBR_q( gfp, lameConfig.format.LHV1.nVBRQuality );

 if (lameConfig.format.LHV1.bWriteVBRHeader==TRUE)
 {
 lame_set_bWriteVbrTag( gfp, 1 );
 }
 else
 {
 lame_set_bWriteVbrTag( gfp, 0 );
 }
 }
 else
 {
 lame_set_VBR( gfp, vbr_off );
 }
 it requires EnableVBR==TRUE and WriteVBRHeader==FALSE

 To get average bitrate you have to set the average bitrate to a positive
 value:
 // Use ABR?
 if (lameConfig.format.LHV1.dwVbrAbr_bps0)
 {
 // set VBR to ABR
 lame_set_VBR( gfp, vbr_abr );

 unfortunately next comes:
 // Use VBR?
 if ( lameConfig.format.LHV1.bEnableVBR )
 {
 switch ( lameConfig.format.LHV1.nVbrMethod)
 {
 case VBR_METHOD_NONE:
 lame_set_VBR( gfp, vbr_off );
 break;

 case VBR_METHOD_DEFAULT:
 lame_set_VBR( gfp, vbr_default );
 break;
 . . .
 case VBR_METHOD_ABR:
 lame_set_VBR( gfp, vbr_abr );
 break;

 and sice we have enabled VBR and VbrMethod is an undocumented feature (not
 described in LameDLLInterface.htm) we are stuck with the default
VbrMethod==0
 that is VBR_METHOD_DEFAULT and we are back to variable bitrate and not
 average bitrate.

 Solutions:
 1. Make VbrMethod a documented feature.
 2. Remove the test for WriteVBRHeader and the call to
lame_set_bWriteVbrTag
from its nesting inside the EnableVBR test and make it an independent
test.

 Best use both solutions 1 and 2.


 Who can help ?

 Martin Ruckert


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 mp3encoder mailing list
 [EMAIL PROTECTED]
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