[mad-dev] more details - Problems happens every 18432 bytes and lasts exactly 4806 bytes.

[Joe Drew]

On Mon, 2002-05-27 at 23:40, Reza Naima wrote:
> All of which have a length of 4806 bytes, and happen at a regular 
> interval of every 18432 (0x4800) bytes.

Are you preserving the data which has not been decoded, and needs to be
preserved for the next call to mad_stream_buffer? When you don't, it 
causes seams and blips and pops.

The following snippet of code is from mpg321, mad.c:read_from_fd().

    int bytes_to_preserve = stream->bufend - stream->next_frame;

    /* need to preserve the bytes which comprise an incomplete
       frame, that mad has passed back to us */
    if (bytes_to_preserve)
        memmove(playbuf->buf, stream->next_frame, bytes_to_preserve);

    if( !(read(playbuf->fd, playbuf->buf + bytes_to_preserve, BUF_SIZE -
bytes_to_preserve) > 0) )
        playbuf->done = 1;

    mad_stream_buffer(stream, playbuf->buf, playbuf->length);

-- 
Joe Drew <hoserhead@woot.net> <drew@debian.org>

Please encrypt email sent to me.