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| 1 : | Isibaar | 1.1 | #ifndef _GLOBAL_H_ |
| 2 : | #define _GLOBAL_H_ | ||
| 3 : | |||
| 4 : | #include "portab.h" | ||
| 5 : | |||
| 6 : | /* --- macroblock stuff --- */ | ||
| 7 : | |||
| 8 : | #define MODE_INTER 0 | ||
| 9 : | #define MODE_INTER_Q 1 | ||
| 10 : | #define MODE_INTER4V 2 | ||
| 11 : | #define MODE_INTRA 3 | ||
| 12 : | #define MODE_INTRA_Q 4 | ||
| 13 : | #define MODE_STUFFING 7 | ||
| 14 : | #define MODE_NOT_CODED 16 | ||
| 15 : | |||
| 16 : | typedef struct | ||
| 17 : | { | ||
| 18 : | int x; | ||
| 19 : | int y; | ||
| 20 : | } VECTOR; | ||
| 21 : | |||
| 22 : | |||
| 23 : | #define MBPRED_SIZE 15 | ||
| 24 : | |||
| 25 : | |||
| 26 : | typedef struct | ||
| 27 : | { | ||
| 28 : | // decoder/encoder | ||
| 29 : | VECTOR mvs[4]; | ||
| 30 : | uint32_t sad8[4]; // SAD values for inter4v-VECTORs | ||
| 31 : | uint32_t sad16; // SAD value for inter-VECTOR | ||
| 32 : | |||
| 33 : | short int pred_values[6][MBPRED_SIZE]; | ||
| 34 : | int acpred_directions[6]; | ||
| 35 : | |||
| 36 : | int mode; | ||
| 37 : | int quant; // absolute quant | ||
| 38 : | |||
| 39 : | h | 1.2 | int field_dct; |
| 40 : | int field_pred; | ||
| 41 : | int field_for_top; | ||
| 42 : | int field_for_bot; | ||
| 43 : | |||
| 44 : | Isibaar | 1.1 | // encoder specific |
| 45 : | |||
| 46 : | VECTOR pmvs[4]; | ||
| 47 : | int dquant; | ||
| 48 : | int cbp; | ||
| 49 : | |||
| 50 : | } MACROBLOCK; | ||
| 51 : | |||
| 52 : | static __inline int8_t get_dc_scaler(int32_t quant, uint32_t lum) | ||
| 53 : | { | ||
| 54 : | int8_t dc_scaler; | ||
| 55 : | |||
| 56 : | if(quant > 0 && quant < 5) { | ||
| 57 : | dc_scaler = 8; | ||
| 58 : | return dc_scaler; | ||
| 59 : | } | ||
| 60 : | |||
| 61 : | if(quant < 25 && !lum) { | ||
| 62 : | dc_scaler = (quant + 13) >> 1; | ||
| 63 : | return dc_scaler; | ||
| 64 : | } | ||
| 65 : | |||
| 66 : | if(quant < 9) { | ||
| 67 : | dc_scaler = quant << 1; | ||
| 68 : | return dc_scaler; | ||
| 69 : | } | ||
| 70 : | |||
| 71 : | if(quant < 25) { | ||
| 72 : | dc_scaler = quant + 8; | ||
| 73 : | return dc_scaler; | ||
| 74 : | } | ||
| 75 : | |||
| 76 : | if(lum) | ||
| 77 : | dc_scaler = (quant << 1) - 16; | ||
| 78 : | else | ||
| 79 : | dc_scaler = quant - 6; | ||
| 80 : | |||
| 81 : | return dc_scaler; | ||
| 82 : | } | ||
| 83 : | |||
| 84 : | #endif /* _GLOBAL_H_ */ |
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