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author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2021-01-02 20:34:32 +0100 |
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committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2021-01-08 05:05:10 +0100 |
commit | 9c318b30f3526195eb465d2afda0be511806c89c (patch) | |
tree | 37d9f5945238f75a13314c86a004ea4290c2b4e4 /libavcodec/g723_1enc.c | |
parent | 3d284e35c20c1993cf6fcabb845836fbd47142fd (diff) | |
download | ffmpeg-9c318b30f3526195eb465d2afda0be511806c89c.tar.gz |
avcodec/g723_1: Move tables to their only user
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavcodec/g723_1enc.c')
-rw-r--r-- | libavcodec/g723_1enc.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/libavcodec/g723_1enc.c b/libavcodec/g723_1enc.c index d8ed4bbb2b..11b0c7f71e 100644 --- a/libavcodec/g723_1enc.c +++ b/libavcodec/g723_1enc.c @@ -40,6 +40,54 @@ #define BITSTREAM_WRITER_LE #include "put_bits.h" +/** + * Hamming window coefficients scaled by 2^15 + */ +static const int16_t hamming_window[LPC_FRAME] = { + 2621, 2631, 2659, 2705, 2770, 2853, 2955, 3074, 3212, 3367, + 3541, 3731, 3939, 4164, 4405, 4663, 4937, 5226, 5531, 5851, + 6186, 6534, 6897, 7273, 7661, 8062, 8475, 8899, 9334, 9780, + 10235, 10699, 11172, 11653, 12141, 12636, 13138, 13645, 14157, 14673, + 15193, 15716, 16242, 16769, 17298, 17827, 18356, 18884, 19411, 19935, + 20457, 20975, 21489, 21999, 22503, 23002, 23494, 23978, 24455, 24924, + 25384, 25834, 26274, 26704, 27122, 27529, 27924, 28306, 28675, 29031, + 29373, 29700, 30012, 30310, 30592, 30857, 31107, 31340, 31557, 31756, + 31938, 32102, 32249, 32377, 32488, 32580, 32654, 32710, 32747, 32766, + 32766, 32747, 32710, 32654, 32580, 32488, 32377, 32249, 32102, 31938, + 31756, 31557, 31340, 31107, 30857, 30592, 30310, 30012, 29700, 29373, + 29031, 28675, 28306, 27924, 27529, 27122, 26704, 26274, 25834, 25384, + 24924, 24455, 23978, 23494, 23002, 22503, 21999, 21489, 20975, 20457, + 19935, 19411, 18884, 18356, 17827, 17298, 16769, 16242, 15716, 15193, + 14673, 14157, 13645, 13138, 12636, 12141, 11653, 11172, 10699, 10235, + 9780, 9334, 8899, 8475, 8062, 7661, 7273, 6897, 6534, 6186, + 5851, 5531, 5226, 4937, 4663, 4405, 4164, 3939, 3731, 3541, + 3367, 3212, 3074, 2955, 2853, 2770, 2705, 2659, 2631, 2621 +}; + +/** + * Binomial window coefficients scaled by 2^15 + */ +static const int16_t binomial_window[LPC_ORDER] = { + 32749, 32695, 32604, 32477, 32315, 32118, 31887, 31622, 31324, 30995 +}; + +/** + * 0.994^i scaled by 2^15 + */ +static const int16_t bandwidth_expand[LPC_ORDER] = { + 32571, 32376, 32182, 31989, 31797, 31606, 31416, 31228, 31040, 30854 +}; + +/** + * 0.5^i scaled by 2^15 + */ +static const int16_t percept_flt_tbl[2][LPC_ORDER] = { + /* Zero part */ + {29491, 26542, 23888, 21499, 19349, 17414, 15673, 14106, 12695, 11425}, + /* Pole part */ + {16384, 8192, 4096, 2048, 1024, 512, 256, 128, 64, 32} +}; + static av_cold int g723_1_encode_init(AVCodecContext *avctx) { G723_1_Context *s = avctx->priv_data; |