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avcodec/rl: Allow to create only a few VLC tables
It is not uncommon that only the first one is used; this is similar to ff_init_2d_vlc_rl(). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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@ -80,6 +80,9 @@ av_cold void ff_rl_init_vlc(RLTable *rl, unsigned static_size)
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int qmul = q * 2;
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int qmul = q * 2;
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int qadd = (q - 1) | 1;
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int qadd = (q - 1) | 1;
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if (!rl->rl_vlc[q])
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return;
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if (q == 0) {
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if (q == 0) {
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qmul = 1;
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qmul = 1;
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qadd = 0;
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qadd = 0;
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@ -68,6 +68,14 @@ void ff_rl_init_vlc(RLTable *rl, unsigned static_size);
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}\
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}\
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}
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}
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#define INIT_FIRST_VLC_RL(rl, static_size) \
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do { \
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static RL_VLC_ELEM rl_vlc_table[static_size]; \
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\
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rl.rl_vlc[0] = rl_vlc_table; \
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ff_rl_init_vlc(&rl, static_size); \
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} while (0)
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static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
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static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
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{
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{
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int index;
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int index;
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