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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-07-30 09:06:44 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-09-18 01:10:53 +0200 |
| commit | 61669b7c40b8dc3a0841768fb39c7567513b7cfc (patch) | |
| tree | 3fdffb224a7c2dbc38a9a65afdfde96ebefcfb49 | |
| parent | 2cef0316747499f3d845d778fbf7e1d1d27d55fb (diff) | |
| download | ffmpeg-61669b7c40b8dc3a0841768fb39c7567513b7cfc.tar.gz | |
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>
| -rw-r--r-- | libavcodec/vlc.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/libavcodec/vlc.h b/libavcodec/vlc.h index 42ccddf3fc..7cb323b62c 100644 --- a/libavcodec/vlc.h +++ b/libavcodec/vlc.h @@ -35,7 +35,12 @@ typedef struct RL_VLC_ELEM { uint8_t run; } RL_VLC_ELEM; -#define init_vlc(vlc, nb_bits, nb_codes, \ +#define INIT_VLC_DEFAULT_SIZES(ptr) \ + (ptr), sizeof((ptr)[0]), sizeof((ptr)[0]) + +#define init_vlc(...) init_vlc2(__VA_ARGS__) + +#define init_vlc2(vlc, nb_bits, nb_codes, \ bits, bits_wrap, bits_size, \ codes, codes_wrap, codes_size, \ flags) \ |