lavfi: switch ff_default_get_audio_buffer() to av_frame_get_buffer()

This simplifies the code and avoids using libavcodec-specific
avcodec_fill_audio_frame().
doc/encoders: Add libopencore-amrnb doc

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavfi: switch ff_default_get_audio_buffer() to av_frame_get_buffer()

Conflicts:
	libavfilter/audio.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
sonicenc: set supported samples formats array

This ensures that only supported formats are input

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
sonicenc: dont put multiple assignments per line

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
sonicenc: fix off by 1 error

Fixes out of array accesses

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
WavPack encoder

Signed-off-by: Paul B Mahol <onemda@gmail.com>
fix

Signed-off-by: Paul B Mahol <onemda@gmail.com>