generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

lavc/dcaenc: replace pow(10,x) by ff_exp10(x)

Browse Source 
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde 2015-12-23 10:23:47 -08:00
parent b0e28da37c
commit 717eeb77e1
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavcodec/dcaenc.c
View File

@ -24,6 +24,7 @@
#include "libavutil/avassert.h" #include "libavutil/avassert.h"
#include "libavutil/channel_layout.h" #include "libavutil/channel_layout.h"
#include "libavutil/common.h" #include "libavutil/common.h"
#include "libavutil/internal.h"
#include "avcodec.h" #include "avcodec.h"
#include "dca.h" #include "dca.h"
#include "dcadata.h" #include "dcadata.h"
@ -179,7 +180,7 @@ static int encode_init(AVCodecContext *avctx)
cos_table[2048-i] = cos_table[i]; cos_table[2048-i] = cos_table[i];
} }
for (i = 0; i < 2048; i++) { for (i = 0; i < 2048; i++) {
cb_to_level[i] = (int32_t)(0x7fffffff * pow(10, -0.005 * i)); cb_to_level[i] = (int32_t)(0x7fffffff * ff_exp10(-0.005 * i));
} }
for (k = 0; k < 32; k++) { for (k = 0; k < 32; k++) {
@ -205,7 +206,7 @@ static int encode_init(AVCodecContext *avctx)
} }
for (i = 0; i < 256; i++) { for (i = 0; i < 256; i++) {
double add = 1 + pow(10, -0.01 * i); double add = 1 + ff_exp10(-0.01 * i);
cb_to_add[i] = (int32_t)(100 * log10(add)); cb_to_add[i] = (int32_t)(100 * log10(add));
} }
for (j = 0; j < 8; j++) { for (j = 0; j < 8; j++) {