Remove half-working attempt at supporting unchecked bitstream reader by
always copying input data into intermediate buffer with large amount of
padding at the end.
Convert LBR decoder to checked bitstream reader. Convert
dcadec_decode_frame() to parse input data directly if possible.
Signed-off-by: James Almer <jamrial@gmail.com>
Values for unsupported frequencies > 48000 Hz are still included (parser
will make use of them).
Also convert sampling frequencies array to unsigned.
Signed-off-by: James Almer <jamrial@gmail.com>
