I have a question, do the changes in parser, allowing it to correctly read the
number of channels from package of frames, should be commited to soc
repository or prepared to main repository?
Required parts of the code:
in AACAC3ParseContext adding
int (*parse_header)(...)
which, having full set of frames from buffer, will set parameters
To allow realization of this function for eac3 I will add also:
arrays to add in ac3tab.c
ff_eac3_default_chmap (Default channel map for a dependent substream defined
by acmod)
ff_ac3_channels_mutliple (Number of channels determined by one bit in
channel_map)
adding parameter to ff_ac3_parse_header characterizing if the function should
set channel_map in AC3HeaderInfo (read more bits)
adding function (rep_channels and channels_bitmask will be used in decoder
code):
/**
Reads full information about channels in eac3 frames
@param buf[in] Array with frames
@param bufsize[in] total size of frames
@param channels_bitmask[out] bitmask describing all used channels
@param rep_channels[out] 16-element array determinig how many times channel
occured in frames
@return Returns number of channels in the case of success or -1 in the case of
error
*/
int ff_ac3_channels_info(const uint8_t *buf, int buf_size,
uint16_t *channels_bitmask, int *rep_channels);
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Bartlomiej Wolowiec