The usage of the bit for txt messages is relatively new, and 2000 bit/s
mode is older, obsolete code. It's disabled on the UI and I should
probably remove it from freedv.
Cheers,
David
On 25/07/14 10:10, Bruce Perens wrote:
> Hi David,
>
> In fdmdv2_main.cpp line 3459, we write a second data bit:
>
> bits[bits_per_codec_frame+11] = abit[1]; // spare bit that was unused in
> 1600 mode
>
> Then in line 3507 we appear to be over-writing it:
>
> bits[bits_per_codec_frame+11] = abit[1]; // spare bit that was unused
> in 1600 mode
>
> for(i=bits_per_codec_frame,j=0; i<bits_per_codec_frame+11; i++,j++)
> {
> bits[i] = (codeword1 >> (10-j)) & 0x1;
> }
> for(j=0; i<bits_per_codec_frame+11+11; i++,j++) {
> bits[i] = (codeword2 >> (10-j)) & 0x1; <-- first
> iteration of this overwrites.
> }
>
> If I am reading this correctly, it didn't ever work in 2000 mode.
>
> Thanks
>
> Bruce
>
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