88 |
uint32_t *tail; |
uint32_t *tail; |
89 |
uint32_t *start; |
uint32_t *start; |
90 |
uint32_t length; |
uint32_t length; |
91 |
|
uint32_t initpos; |
92 |
} |
} |
93 |
Bitstream; |
Bitstream; |
94 |
|
|
98 |
|
|
99 |
typedef struct |
typedef struct |
100 |
{ |
{ |
101 |
// decoder/encoder |
/* decoder/encoder */ |
102 |
VECTOR mvs[4]; |
VECTOR mvs[4]; |
103 |
|
|
104 |
short int pred_values[6][MBPRED_SIZE]; |
short int pred_values[6][MBPRED_SIZE]; |
105 |
int acpred_directions[6]; |
int acpred_directions[6]; |
106 |
|
|
107 |
int mode; |
int mode; |
108 |
int quant; // absolute quant |
int quant; /* absolute quant */ |
109 |
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|
110 |
int field_dct; |
int field_dct; |
111 |
int field_pred; |
int field_pred; |
112 |
int field_for_top; |
int field_for_top; |
113 |
int field_for_bot; |
int field_for_bot; |
114 |
|
|
115 |
// encoder specific |
/* encoder specific */ |
116 |
|
|
117 |
VECTOR mv16; |
VECTOR mv16; |
118 |
VECTOR pmvs[4]; |
VECTOR pmvs[4]; |
119 |
|
|
120 |
int32_t sad8[4]; // SAD values for inter4v-VECTORs |
int32_t sad8[4]; /* SAD values for inter4v-VECTORs */ |
121 |
int32_t sad16; // SAD value for inter-VECTOR |
int32_t sad16; /* SAD value for inter-VECTOR */ |
122 |
|
|
123 |
int dquant; |
int dquant; |
124 |
int cbp; |
int cbp; |
125 |
|
|
126 |
// bframe stuff |
/* bframe stuff */ |
127 |
|
|
128 |
VECTOR b_mvs[4]; |
VECTOR b_mvs[4]; |
129 |
VECTOR b_pmvs[4]; |
VECTOR b_pmvs[4]; |
130 |
|
|
131 |
// bframe direct mode |
/* bframe direct mode */ |
132 |
|
|
133 |
VECTOR directmv[4]; |
VECTOR directmv[4]; |
134 |
VECTOR deltamv; |
VECTOR deltamv; |
136 |
int mb_type; |
int mb_type; |
137 |
int dbquant; |
int dbquant; |
138 |
|
|
139 |
// stuff for block based ME (needed for Qpel ME) |
/* stuff for block based ME (needed for Qpel ME) */ |
140 |
// backup of last integer ME vectors/sad |
/* backup of last integer ME vectors/sad */ |
141 |
|
|
142 |
VECTOR i_mv16; |
VECTOR i_mv16; |
143 |
VECTOR i_mvs[4]; |
VECTOR i_mvs[4]; |
144 |
|
|
145 |
int32_t i_sad8[4]; // SAD values for inter4v-VECTORs |
int32_t i_sad8[4]; /* SAD values for inter4v-VECTORs */ |
146 |
int32_t i_sad16; // SAD value for inter-VECTOR |
int32_t i_sad16; /* SAD value for inter-VECTOR */ |
147 |
|
|
148 |
} |
} |
149 |
MACROBLOCK; |
MACROBLOCK; |
156 |
return 8; |
return 8; |
157 |
|
|
158 |
if (quant < 25 && !lum) |
if (quant < 25 && !lum) |
159 |
return (quant + 13) / 2; |
return (int8_t)((quant + 13) / 2); |
160 |
|
|
161 |
if (quant < 9) |
if (quant < 9) |
162 |
return 2 * quant; |
return (int8_t)(2 * quant); |
163 |
|
|
164 |
if (quant < 25) |
if (quant < 25) |
165 |
return quant + 8; |
return (int8_t)(quant + 8); |
166 |
|
|
167 |
if (lum) |
if (lum) |
168 |
return 2 * quant - 16; |
return (int8_t)(2 * quant - 16); |
169 |
else |
else |
170 |
return quant - 6; |
return (int8_t)(quant - 6); |
171 |
} |
} |
172 |
|
|
173 |
// useful macros |
/* useful macros */ |
174 |
|
|
175 |
#define MIN(X, Y) ((X)<(Y)?(X):(Y)) |
#define MIN(X, Y) ((X)<(Y)?(X):(Y)) |
176 |
#define MAX(X, Y) ((X)>(Y)?(X):(Y)) |
#define MAX(X, Y) ((X)>(Y)?(X):(Y)) |