mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/vlc: Add macro for ff_init_vlc_sparse()
ff_init_vlc_sparse() supports arrays of uint8_t, uint16_t and uint32_t as input (and it also supports padding/other elements in between the elements). This makes the typical case in which the input is a simple array more cumbersome. E.g. for an array of uint8_t one would either need to call the function with arguments like "array, sizeof(array[0]), sizeof(array[0])" or with "array, 1, 1". The former is nicer, but longer, so that the latter is mostly used. Therefore this commit adds a macro that expands to the sizeof() construct. Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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@ -35,7 +35,12 @@ typedef struct RL_VLC_ELEM {
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uint8_t run;
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} RL_VLC_ELEM;
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#define init_vlc(vlc, nb_bits, nb_codes, \
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#define INIT_VLC_DEFAULT_SIZES(ptr) \
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(ptr), sizeof((ptr)[0]), sizeof((ptr)[0])
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#define init_vlc(...) init_vlc2(__VA_ARGS__)
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#define init_vlc2(vlc, nb_bits, nb_codes, \
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bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, \
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flags) \
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