-//The three following functions are here to avoid needing libavformat/codec2.c to depend on libcodec2
-
-//Computes bitrate from mode, with frames rounded up to the nearest octet.
-//So 700 bit/s (28 bits/frame) becomes 800 bits/s (32 bits/frame).
-//logctx is used for av_log()
-//Returns <0 if mode is invalid
-int avpriv_codec2_mode_bit_rate(void *logctx, int mode);
-
-//Mimics codec2_samples_per_frame()
-int avpriv_codec2_mode_frame_size(void *logctx, int mode);
-
-//Mimics (codec2_bits_per_frame()+7)/8
-int avpriv_codec2_mode_block_align(void *logctx, int mode);
-
-#define AVPRIV_CODEC2_EXTRADATA_SIZE 4