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Date:      Sat, 6 Mar 1999 11:58:38 -0500 (EST)
From:      Bernie Doehner <bad@uhf.wireless.net>
To:        multimedia@freebsd.org
Subject:   Trouble with mpegaudio/musicin (Video capture works fine).
Message-ID:  <Pine.BSF.4.05.9903061148040.15644-100000@uhf.wireless.net>
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Hello All:

Program Versions:
fxtv 0.48,
mpeg_encode-1.5b
mpegaudio-3.9
mpg123-0.59o
sox-12.12

Hardware (not that it matters), is a OPTI931 audio card, Millenium II PCI
video card.

When trying to record video with the following parameters:
TARGET: MPEG
IMAGE CAPTURE:
		FORMAT: RGB
		SPEED: 30 fps
IMAGE ENCODE:	PPM
AUDIO CAPTURE:	(ENABLE)
		16-bit Signed (LSB)
		Stereo 44,100 samp/s

AUDIO ENCODE:
		FORMAT: MPEG-2

the conversion script fails with:

======FRAMES READ:  47
::STATUS:: 0
::EXEC:: rm /usr/tmp/test.param
::STATUS:: 0
::EXEC:: sox -t raw -s -w -c 2 -r 44100 /usr/tmp/test.AUDraw -t aiff
/usr/tmp/test.aiff && mpeg_musicin -l 2 -p 1 /usr/tmp/test.aiff
/usr/tmp/test.mp2 && rm /usr/tmp/test.aiff
>>> Using Audio IFF sound file headers
SmpFrqIndex: 0 is not a legal sample rate
in "/usr/tmp/test.aiff".
::STATUS:: 1

Command Failed:
  sox -t raw -s -w -c 2 -r 44100 /usr/tmp/test.AUDraw -t aiff
/usr/tmp/test.aiff && mpeg_musicin -l 2 -p 1 /usr/tmp/test.aiff
/usr/tmp/test.mp2 && rm /usr/tmp/test.aiff
Conversion Aborted.

In looking at common.c in mpegaudio ports build directory I see function:

int SmpFrqIndex(sRate)  /* convert samp frq in Hz to index */
long sRate;             /* legal rates 32000, 44100, 48000 */
{         
    if(sRate == 44100L)
        return(0);  
    else if(sRate == 48000L)
        return(1);
    else if(sRate == 32000L)
        return(2);
    else {
        fprintf(stderr, "SmpFrqIndex: %ld is not a legal sample rate\n",
sRate);
        return(-1);      /* Error! */
    }
}   

And at musicin.c at line 195 we have:

     info->sampling_frequency = SmpFrqIndex((long)pcm_aiff_data.sampleRate);
       printf(">>> %.f Hz sampling frequency selected\n",
              pcm_aiff_data.sampleRate);

This is where I think I am failing.. 

Question: Why on earth would pcm_aiff_data.sampleRate be 0, and not
41100L? Is there something wrong with my versions of the different
components, before I start digging deeper into the code?

Thanks.

Bernie



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