mirror of
https://github.com/nyanmisaka/mpp.git
synced 2025-10-05 17:16:50 +08:00
ca061993ef
1. Refactor osal cpp files to c. 2. Update osal license to Apache-2.0 OR MIT. 3. Remove windows support. Signed-off-by: Herman Chen <herman.chen@rock-chips.com> Change-Id: Ic5545d861676880f7a6247515404d585cd4fcef5
129 lines
2.7 KiB
C
129 lines
2.7 KiB
C
/* SPDX-License-Identifier: Apache-2.0 OR MIT */
|
|
/*
|
|
* Copyright (c) 2015 Rockchip Electronics Co., Ltd.
|
|
*/
|
|
|
|
#include "mpp_common.h"
|
|
|
|
static const RK_U8 log2_tab[256] = {
|
|
0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
|
|
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
|
|
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
|
|
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
|
|
};
|
|
|
|
RK_S32 mpp_log2(RK_U32 v)
|
|
{
|
|
RK_S32 n = 0;
|
|
|
|
if (v & 0xffff0000) {
|
|
v >>= 16;
|
|
n += 16;
|
|
}
|
|
if (v & 0xff00) {
|
|
v >>= 8;
|
|
n += 8;
|
|
}
|
|
n += log2_tab[v];
|
|
|
|
return n;
|
|
}
|
|
|
|
RK_S32 mpp_log2_16bit(RK_U32 v)
|
|
{
|
|
RK_S32 n = 0;
|
|
|
|
if (v & 0xff00) {
|
|
v >>= 8;
|
|
n += 8;
|
|
}
|
|
n += log2_tab[v];
|
|
|
|
return n;
|
|
}
|
|
|
|
RK_S32 axb_div_c(RK_S32 a, RK_S32 b, RK_S32 c)
|
|
{
|
|
RK_U32 left = 32;
|
|
RK_U32 right = 0;
|
|
RK_U32 shift;
|
|
RK_S32 sign = 1;
|
|
RK_S32 tmp;
|
|
|
|
if (a == 0 || b == 0)
|
|
return 0;
|
|
else if ((a * b / b) == a && c != 0)
|
|
return (a * b / c);
|
|
|
|
if (a < 0) {
|
|
sign = -1;
|
|
a = -a;
|
|
}
|
|
if (b < 0) {
|
|
sign *= -1;
|
|
b = -b;
|
|
}
|
|
if (c < 0) {
|
|
sign *= -1;
|
|
c = -c;
|
|
}
|
|
|
|
if (c == 0)
|
|
return 0x7FFFFFFF * sign;
|
|
|
|
if (b > a) {
|
|
tmp = b;
|
|
b = a;
|
|
a = tmp;
|
|
}
|
|
|
|
for (--left; (((RK_U32)a << left) >> left) != (RK_U32)a; --left)
|
|
;
|
|
|
|
left--;
|
|
|
|
while (((RK_U32)b >> right) > (RK_U32)c)
|
|
right++;
|
|
|
|
if (right > left) {
|
|
return 0x7FFFFFFF * sign;
|
|
} else {
|
|
shift = left - right;
|
|
return (RK_S32)((((RK_U32)a << shift) /
|
|
(RK_U32)c * (RK_U32)b) >> shift) * sign;
|
|
}
|
|
}
|
|
|
|
RK_U32 mpp_align_16(RK_U32 val)
|
|
{
|
|
return MPP_ALIGN(val, 16);
|
|
}
|
|
|
|
RK_U32 mpp_align_64(RK_U32 val)
|
|
{
|
|
return MPP_ALIGN(val, 64);
|
|
}
|
|
|
|
RK_U32 mpp_align_128(RK_U32 val)
|
|
{
|
|
return MPP_ALIGN(val, 128);
|
|
}
|
|
|
|
RK_U32 mpp_align_256_odd(RK_U32 val)
|
|
{
|
|
return MPP_ALIGN(val, 256) | 256;
|
|
}
|
|
|
|
RK_U32 mpp_align_128_odd_plus_64(RK_U32 val)
|
|
{
|
|
val = MPP_ALIGN(val, 64);
|
|
if (((val - 64) % 256 == 128))
|
|
return val;
|
|
else
|
|
return ((MPP_ALIGN(val, 128) | 128) + 64);
|
|
}
|