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author | Alexandra Hájková <alexandra.khirnova@gmail.com> | 2016-05-14 11:45:01 +0200 |
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committer | Luca Barbato <lu_zero@gentoo.org> | 2016-05-17 10:29:27 +0200 |
commit | ffa190d0479d2370dd89c95692f822cbff2cc24c (patch) | |
tree | 6b09a2c8623644bdf5fdd4bb683af2a44dbe6c09 /libavcodec/vlc.h | |
parent | b23613268c6b56a8f9de7859562d82b4b88353d9 (diff) | |
download | ffmpeg-ffa190d0479d2370dd89c95692f822cbff2cc24c.tar.gz |
Move VLC and RL_VLC_ELEM structure definitions to a separate header
Use the newly created vlc.h directly instead of including get_bits when needed.
The VLC and RL_VLC_ELEM structures are independent from the bitreader.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavcodec/vlc.h')
-rw-r--r-- | libavcodec/vlc.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libavcodec/vlc.h b/libavcodec/vlc.h new file mode 100644 index 0000000000..4ade824391 --- /dev/null +++ b/libavcodec/vlc.h @@ -0,0 +1,65 @@ +/* + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_VLC_H +#define AVCODEC_VLC_H + +#include <stdint.h> + +#define VLC_TYPE int16_t + +typedef struct VLC { + int bits; + VLC_TYPE (*table)[2]; ///< code, bits + int table_size, table_allocated; +} VLC; + +typedef struct RL_VLC_ELEM { + int16_t level; + int8_t len; + uint8_t run; +} RL_VLC_ELEM; + +#define init_vlc(vlc, nb_bits, nb_codes, \ + bits, bits_wrap, bits_size, \ + codes, codes_wrap, codes_size, \ + flags) \ + ff_init_vlc_sparse(vlc, nb_bits, nb_codes, \ + bits, bits_wrap, bits_size, \ + codes, codes_wrap, codes_size, \ + NULL, 0, 0, flags) + +int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes, + const void *bits, int bits_wrap, int bits_size, + const void *codes, int codes_wrap, int codes_size, + const void *symbols, int symbols_wrap, int symbols_size, + int flags); +void ff_free_vlc(VLC *vlc); + +#define INIT_VLC_LE 2 +#define INIT_VLC_USE_NEW_STATIC 4 + +#define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \ + do { \ + static VLC_TYPE table[static_size][2]; \ + (vlc)->table = table; \ + (vlc)->table_allocated = static_size; \ + init_vlc(vlc, bits, a, b, c, d, e, f, g, INIT_VLC_USE_NEW_STATIC); \ + } while (0) + +#endif /* AVCODEC_VLC_H */ |