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1 : | Isibaar | 3 | #include "../portab.h" |
2 : | #include "cbp.h" | ||
3 : | |||
4 : | cbpFuncPtr calc_cbp; | ||
5 : | |||
6 : | edgomez | 46 | /* |
7 : | * Returns a field of bits that indicates non zero ac blocks | ||
8 : | * for this macro block | ||
9 : | */ | ||
10 : | edgomez | 195 | uint32_t |
11 : | calc_cbp_c(const int16_t codes[6 * 64]) | ||
12 : | Isibaar | 3 | { |
13 : | edgomez | 46 | uint32_t i, j; |
14 : | uint32_t cbp = 0; | ||
15 : | Isibaar | 3 | |
16 : | edgomez | 195 | for (i = 0; i < 6; i++) { |
17 : | for (j = 1; j < 61; j += 4) { | ||
18 : | if (codes[i * 64 + j] | codes[i * 64 + j + 1] | | ||
19 : | codes[i * 64 + j + 2] | codes[i * 64 + j + 3]) { | ||
20 : | Isibaar | 3 | cbp |= 1 << (5 - i); |
21 : | break; | ||
22 : | } | ||
23 : | } | ||
24 : | edgomez | 46 | |
25 : | edgomez | 195 | if (codes[i * 64 + j] | codes[i * 64 + j + 1] | codes[i * 64 + j + 2]) |
26 : | edgomez | 46 | cbp |= 1 << (5 - i); |
27 : | |||
28 : | } | ||
29 : | |||
30 : | return cbp; | ||
31 : | |||
32 : | Isibaar | 3 | } |
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