From 5a8158c86d30905b0684fdf4e74a9bb1d1ba767b Mon Sep 17 00:00:00 2001 From: Andre Noll Date: Sun, 18 Oct 2009 22:56:26 +0200 Subject: [PATCH 1/1] Uninline get_vlc(). --- bitstream.c | 39 +++++++++++++++++++++++++++++++++++++++ bitstream.h | 37 ++----------------------------------- 2 files changed, 41 insertions(+), 35 deletions(-) diff --git a/bitstream.c b/bitstream.c index dedcdead..d9d5233a 100644 --- a/bitstream.c +++ b/bitstream.c @@ -163,3 +163,42 @@ void free_vlc(struct vlc *vlc) { freep(&vlc->table); } + +/** + * Parse a vlc code. + * + * \param gbc The getbit context structure. + * + * \param bits The number of bits which will be read at once, must be + * identical to nb_bits in init_vlc(). + * + * \param max_depth The number of times bits bits must be read to completely + * read the longest vlc code = (max_vlc_length + bits - 1) / bits. + * + * \return The vlc code. + */ +int get_vlc(struct getbit_context *gbc, VLC_TYPE(*table)[2], int bits, + int max_depth) +{ + int n, idx, nb_bits, code; + + idx = show_bits(gbc, bits); + code = table[idx][0]; + n = table[idx][1]; + if (max_depth > 1 && n < 0) { + skip_bits(gbc, bits); + nb_bits = -n; + idx = show_bits(gbc, nb_bits) + code; + code = table[idx][0]; + n = table[idx][1]; + if (max_depth > 2 && n < 0) { + skip_bits(gbc, nb_bits); + nb_bits = -n; + idx = show_bits(gbc, nb_bits) + code; + code = table[idx][0]; + n = table[idx][1]; + } + } + skip_bits(gbc, n); + return code; +} diff --git a/bitstream.h b/bitstream.h index 88b62f94..46038842 100644 --- a/bitstream.h +++ b/bitstream.h @@ -79,40 +79,7 @@ static inline void init_get_bits(struct getbit_context *gbc, void init_vlc(struct vlc *vlc, int nb_bits, int nb_codes, const void *bits, const void *codes, int codes_size); - void free_vlc(struct vlc *vlc); +int get_vlc(struct getbit_context *gbc, VLC_TYPE(*table)[2], int bits, + int max_depth); -/** - * Parse a vlc code. - * - * \param bits The number of bits which will be read at once, must be - * identical to nb_bits in init_vlc() - * - * \param max_depth The number of times bits bits must be read to completely - * read the longest vlc code = (max_vlc_length + bits - 1) / bits. - */ -static inline int get_vlc(struct getbit_context *gbc, VLC_TYPE(*table)[2], - int bits, int max_depth) -{ - int n, idx, nb_bits, code; - - idx = show_bits(gbc, bits); - code = table[idx][0]; - n = table[idx][1]; - if (max_depth > 1 && n < 0) { - skip_bits(gbc, bits); - nb_bits = -n; - idx = show_bits(gbc, nb_bits) + code; - code = table[idx][0]; - n = table[idx][1]; - if (max_depth > 2 && n < 0) { - skip_bits(gbc, nb_bits); - nb_bits = -n; - idx = show_bits(gbc, nb_bits) + code; - code = table[idx][0]; - n = table[idx][1]; - } - } - skip_bits(gbc, n); - return code; -} -- 2.39.2