[Vorbis] oggdec.exe not using album gain stdout option

John Edwards john.edwards33 at ntlworld.com
Tue Oct 24 12:21:22 PDT 2006


Let me take a look at this and I'll get back to you.

John

Jeremy R. Donnell wrote:
> This question is mainly directed at John Edwards, I believe. I'm 
> attempting to use oggdec.exe in a batch conversion of ogg vorbis files 
> for use on a portable player. I'm using the -o option to redirect output 
> to the LAME encoder. So far so good.
> 
> However, I also want to do volume leveling using the replaygain tags. If 
> I specify track (radio) gain, everything works fine, however, when I 
> specify album (audiophile) gain, no gain is applied. I've had a look at 
> the code, and as near as I can tell the problem is in here:
> 
> line 775 of oggdec.c
> 
>         if(!send_to_stdout && audiophile || radio)
>         {
>             fprintf(stderr, audiophile
>                 ? " Running in Album/Audiophile mode\n\n"
>                 : " Running in Track/Radio mode\n\n");
>             /* We are using ReplayGain tags, so get the scale for gain 
> adjustment. */
>             scale = get_scale(file_names[i], audiophile, radio);
>         }
>         else
>             scale = 1.0;
> 
> It seems to me from looking at that code that it shouldn't do either 
> track or album gain when stdout is selected, but that contradicts the 
> actual results that I've obtained. Perhaps I don't fully grasp the 
> logical operator rules in C? In C# this would dump to the else as soon 
> as !send_to_stdout evaluated as false, and the audiophile and radio 
> operands would not even be evaluated. I'm thinking that the correct 
> solution would be to take the !send_to_stdout out of the first if 
> statement and add it in before the fprintf() call. In fact, I've seen 
> the "Running in Track/Radio mode" message when using the options "-r -o".
> 
> I'm not a C/C++ programmer, so although I can sort of read this code, 
> I'm not at all familiar with getting it to compile. Using instructions 
> that were posted to this list a month or so back, I've attempted to 
> compile the project with Visual Studio 2005, but I haven't met with any 
> success on that front.
> 
> Any help (and maybe an updated binary ;) ) would be appreciated. Thanks.
> 
> -- 
> Jeremy
> 


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