diff options
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/acelp_pitch_delay.c | 2 | ||||
| -rw-r--r-- | libavcodec/celp_math.c | 2 | ||||
| -rw-r--r-- | libavcodec/celp_math.h | 2 | ||||
| -rw-r--r-- | libavcodec/mathtables.c | 11 | ||||
| -rw-r--r-- | libavcodec/sqrt_tab.c | 30 |
6 files changed, 34 insertions, 14 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 1c6e148424..875670b87e 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -33,6 +33,7 @@ OBJS = allcodecs.o \ resample.o \ resample2.o \ simple_idct.o \ + sqrt_tab.o \ utils.o \ # parts needed for many different codecs diff --git a/libavcodec/acelp_pitch_delay.c b/libavcodec/acelp_pitch_delay.c index e488cc8eff..95bcce7a4a 100644 --- a/libavcodec/acelp_pitch_delay.c +++ b/libavcodec/acelp_pitch_delay.c @@ -87,7 +87,7 @@ void ff_acelp_update_past_gain( if(erasure) quant_energy[0] = FFMAX(avg_gain >> log2_ma_pred_order, -10240) - 4096; // -10 and -4 in (5.10) else - quant_energy[0] = (6165 * ((ff_log2(gain_corr_factor) >> 2) - (13 << 13))) >> 13; + quant_energy[0] = (6165 * ((ff_log2_q15(gain_corr_factor) >> 2) - (13 << 13))) >> 13; } int16_t ff_acelp_decode_gain_code( diff --git a/libavcodec/celp_math.c b/libavcodec/celp_math.c index 56dc86379e..a96b1aed9e 100644 --- a/libavcodec/celp_math.c +++ b/libavcodec/celp_math.c @@ -75,7 +75,7 @@ static const uint16_t tab_log2[33] = #endif }; -int ff_log2(uint32_t value) +int ff_log2_q15(uint32_t value) { uint8_t power_int; uint8_t frac_x0; diff --git a/libavcodec/celp_math.h b/libavcodec/celp_math.h index f12f67880b..18d3ad94d1 100644 --- a/libavcodec/celp_math.h +++ b/libavcodec/celp_math.h @@ -59,7 +59,7 @@ int ff_exp2(uint16_t power); * * @return value of (1<<15) * log2(value) */ -int ff_log2(uint32_t value); +int ff_log2_q15(uint32_t value); /** * Shift value left or right depending on sign of offset parameter. diff --git a/libavcodec/mathtables.c b/libavcodec/mathtables.c index 037b135a1b..bbc49ced72 100644 --- a/libavcodec/mathtables.c +++ b/libavcodec/mathtables.c @@ -58,17 +58,6 @@ const uint32_t ff_inverse[257]={ 16777216 }; -const uint8_t ff_sqrt_tab[256]={ - 0, 16, 23, 28, 32, 36, 40, 43, 46, 48, 51, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 77, 79, 80, 82, 84, 85, 87, 88, 90, - 91, 92, 94, 95, 96, 98, 99,100,102,103,104,105,107,108,109,110,111,112,114,115,116,117,118,119,120,121,122,123,124,125,126,127, -128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,144,145,146,147,148,149,150,151,151,152,153,154,155,156,156, -157,158,159,160,160,161,162,163,164,164,165,166,167,168,168,169,170,171,171,172,173,174,174,175,176,176,177,178,179,179,180,181, -182,182,183,184,184,185,186,186,187,188,188,189,190,190,191,192,192,193,194,194,195,196,196,197,198,198,199,200,200,201,202,202, -203,204,204,205,205,206,207,207,208,208,209,210,210,211,212,212,213,213,214,215,215,216,216,217,218,218,219,219,220,220,221,222, -222,223,223,224,224,225,226,226,227,227,228,228,229,230,230,231,231,232,232,233,233,234,235,235,236,236,237,237,238,238,239,239, -240,240,241,242,242,243,243,244,244,245,245,246,246,247,247,248,248,249,249,250,250,251,251,252,252,253,253,254,254,255,255,255 -}; - const uint8_t ff_reverse[256] = { 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0, 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8, diff --git a/libavcodec/sqrt_tab.c b/libavcodec/sqrt_tab.c new file mode 100644 index 0000000000..f084b45f90 --- /dev/null +++ b/libavcodec/sqrt_tab.c @@ -0,0 +1,30 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> + +const uint8_t ff_sqrt_tab[256]={ + 0, 16, 23, 28, 32, 36, 40, 43, 46, 48, 51, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 77, 79, 80, 82, 84, 85, 87, 88, 90, + 91, 92, 94, 95, 96, 98, 99,100,102,103,104,105,107,108,109,110,111,112,114,115,116,117,118,119,120,121,122,123,124,125,126,127, +128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,144,145,146,147,148,149,150,151,151,152,153,154,155,156,156, +157,158,159,160,160,161,162,163,164,164,165,166,167,168,168,169,170,171,171,172,173,174,174,175,176,176,177,178,179,179,180,181, +182,182,183,184,184,185,186,186,187,188,188,189,190,190,191,192,192,193,194,194,195,196,196,197,198,198,199,200,200,201,202,202, +203,204,204,205,205,206,207,207,208,208,209,210,210,211,212,212,213,213,214,215,215,216,216,217,218,218,219,219,220,220,221,222, +222,223,223,224,224,225,226,226,227,227,228,228,229,230,230,231,231,232,232,233,233,234,235,235,236,236,237,237,238,238,239,239, +240,240,241,242,242,243,243,244,244,245,245,246,246,247,247,248,248,249,249,250,250,251,251,252,252,253,253,254,254,255,255,255 +}; |