diff options
| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-11-17 22:25:35 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-12-08 17:51:47 +0100 |
| commit | 73bc26acb87e0e0ff74bc26bc9d7c54eceeb0145 (patch) | |
| tree | 9deba5d4f1890f03b3251cea30f58021d7ae9b9d /libavcodec/mpegaudiodata.h | |
| parent | b9d475393e837d757195039b39302026cba1128c (diff) | |
avcodec/mpegaudiodec: Share fixed and floating point data and init code
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavcodec/mpegaudiodata.h')
| -rw-r--r-- | libavcodec/mpegaudiodata.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libavcodec/mpegaudiodata.h b/libavcodec/mpegaudiodata.h index a188150cbf..ec969353f3 100644 --- a/libavcodec/mpegaudiodata.h +++ b/libavcodec/mpegaudiodata.h @@ -30,6 +30,7 @@ #include <stdint.h> #include "internal.h" +#include "vlc.h" #define MODE_EXT_MS_STEREO 2 #define MODE_EXT_I_STEREO 1 @@ -41,4 +42,34 @@ extern const int ff_mpa_quant_steps[17]; extern const int ff_mpa_quant_bits[17]; extern const unsigned char * const ff_mpa_alloc_tables[5]; +/* VLCs for decoding layer 3 huffman tables */ +extern VLC ff_huff_vlc[16]; +extern VLC ff_huff_quad_vlc[2]; + +/* layer3 scale factor size */ +extern const uint8_t ff_slen_table[2][16]; +/* number of lsf scale factors for a given size */ +extern const uint8_t ff_lsf_nsf_table[6][3][4]; +extern const uint8_t ff_mpa_huff_data[32][2]; + +/* band size tables */ +extern const uint8_t ff_band_size_long[9][22]; +extern const uint8_t ff_band_size_short[9][13]; +/* computed from ff_band_size_long */ +extern uint16_t ff_band_index_long[9][23]; + +extern int16_t *const ff_division_tabs[4]; + +/* lower 2 bits: modulo 3, higher bits: shift */ +extern uint16_t ff_scale_factor_modshift[64]; + +extern const uint8_t ff_mpa_pretab[2][22]; + +/* table for alias reduction (XXX: store it as integer !) */ +extern const float ff_ci_table[8]; + +/* Initialize tables shared between the fixed and + * floating point MPEG audio decoders. */ +void ff_mpegaudiodec_common_init_static(void); + #endif /* AVCODEC_MPEGAUDIODATA_H */ |