1 /* |
|
2 * Copyright (c) 2010 Ixonos Plc. |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - Initial contribution |
|
11 * |
|
12 * Contributors: |
|
13 * Ixonos Plc |
|
14 * |
|
15 * Description: |
|
16 * Block handling. |
|
17 * |
|
18 */ |
|
19 |
|
20 |
|
21 #ifndef _BLOCK_H_ |
|
22 #define _BLOCK_H_ |
|
23 |
|
24 #include "epoclib.h" |
|
25 #include "vdcmvc.h" |
|
26 |
|
27 /* |
|
28 * Definitions |
|
29 */ |
|
30 |
|
31 |
|
32 |
|
33 /* |
|
34 * Structs and typedefs |
|
35 */ |
|
36 |
|
37 /* {{-output"blcDiffMB_t_info.txt" -ignore"*" -noCR}} |
|
38 blcDiffMB_t is used as a temporary storage for the previous difference |
|
39 (INTER) macroblock. This storage is needed for the Advanced Prediction |
|
40 mode because the previous prediction macroblock cannot be constructed |
|
41 until the motion vectors of the current macroblock have been fetched |
|
42 from the bitstream. (The previous difference macroblock cannot be stored |
|
43 directly to the current frame either, because the difference block data |
|
44 is signed and the frame data is unsigned.) |
|
45 {{-output"blcDiffMB_t_info.txt"}} */ |
|
46 |
|
47 /* {{-output"blcDiffMB_t.txt"}} */ |
|
48 typedef struct { |
|
49 int block[4][64]; /* luminance blocks for P frame */ |
|
50 int cbpy; /* coded block pattern for luminance */ |
|
51 } blcDiffMB_t; |
|
52 /* {{-output"blcDiffMB_t.txt"}} */ |
|
53 |
|
54 |
|
55 /* {{-output"BLC_COPY_PREDICTION_MB_PARAM_info.txt" -ignore"*" -noCR}} |
|
56 This C preprocessor definition is used to store the parameters needed |
|
57 for the blcCopyPredictionMB function (and therefore also for |
|
58 the blcCopyPredictionMBParam_t data type). These parameters may also be used |
|
59 in other modules than the Block Tools and in other data structures than |
|
60 blcCopyPredictionMBParam_t. When these parameters are introduced with this |
|
61 preprocessor definition in the other data structures, one does not need |
|
62 the "extra" reference step which would be needed if the parameters |
|
63 would have been introduced directly and only in |
|
64 the blcCopyPredictionMBParam_t structure. For example, if otherStructA |
|
65 has been typedefd as {BLC_COPY_PREDICTION_MB_PARAM} and otherStructB as |
|
66 {blcCopyPredictionMBParam_t predPar;}, to access e.g. refY one has to use |
|
67 either otherStructA.refY or otherStructB.predPar.refY. |
|
68 {{-output"BLC_COPY_PREDICTION_MB_PARAM_info.txt"}} */ |
|
69 |
|
70 /* {{-output"BLC_COPY_PREDICTION_MB_PARAM.txt"}} */ |
|
71 #define BLC_COPY_PREDICTION_MB_PARAM \ |
|
72 u_char *refY; /* Reference frame */ \ |
|
73 u_char *refU; \ |
|
74 u_char *refV; \ |
|
75 \ |
|
76 u_char *currYMBInFrame; /* Pointer to current macroblock in frame */ \ |
|
77 u_char *currUBlkInFrame; \ |
|
78 u_char *currVBlkInFrame; \ |
|
79 \ |
|
80 int uvBlkXCoord; /* X coord of MB in chrominance pixels */ \ |
|
81 int uvBlkYCoord; /* Y coord of MB (top-left corner) in */ \ |
|
82 /* chrominance pixels */ \ |
|
83 \ |
|
84 int uvWidth; /* Width of the picture in chro pixels */ \ |
|
85 int uvHeight; /* Height of the picture in chro pixels */ \ |
|
86 \ |
|
87 mvcData_t *mvcData; /* Motion Vector Count module instance data */ \ |
|
88 \ |
|
89 int *mvx; /* Array of 4 x-components of motion vectors */ \ |
|
90 int *mvy; /* Array of 4 y-components of motion vectors */ \ |
|
91 /* If not in 4-MVs-mode, only the first entry */ \ |
|
92 /* of the both arrays is used. */ \ |
|
93 \ |
|
94 int mbPlace; /* Indicates the place of the current */ \ |
|
95 /* macroblock inside the macroblock row: */ \ |
|
96 /* -1 beginning of row */ \ |
|
97 /* 0 middle of row */ \ |
|
98 /* 1 end of row */ \ |
|
99 /* If Annex K is in use */ \ |
|
100 /* -1 beginning of row or slice */ \ |
|
101 /* 0 middle of slice */ \ |
|
102 /* 1 end of row(if not the beginning of */ \ |
|
103 /* the slice) or slice */ \ |
|
104 /* 2 end of row and the beginning of slice */ \ |
|
105 \ |
|
106 int fAdvancedPrediction; /* Non-zero if Advanced Prediction is used */ \ |
|
107 \ |
|
108 int fMVsOverPictureBoundaries; \ |
|
109 /* Non-zero if MVs are allowed to point */ \ |
|
110 /* outside picture boundaries */ \ |
|
111 \ |
|
112 blcDiffMB_t *diffMB; /* Prediction error for the previous MB */ \ |
|
113 \ |
|
114 int rcontrol; /* RCONTROL (section 6.1.2 of H.263) */ \ |
|
115 \ |
|
116 int fourMVs; /* Flag to indicate if there is four motion |
|
117 vectors per macroblock */ |
|
118 /* {{-output"BLC_COPY_PREDICTION_MB_PARAM.txt"}} */ |
|
119 |
|
120 |
|
121 /* {{-output"blcCopyPredictionMBParam_t_info.txt" -ignore"*" -noCR}} |
|
122 This structure is used to pass parameters into the blcCopyPredictionMB |
|
123 function. |
|
124 {{-output"blcCopyPredictionMBParam_t_info.txt"}} */ |
|
125 |
|
126 /* {{-output"blcCopyPredictionMBParam_t.txt"}} */ |
|
127 typedef struct { |
|
128 BLC_COPY_PREDICTION_MB_PARAM |
|
129 } blcCopyPredictionMBParam_t; |
|
130 /* {{-output"blcCopyPredictionMBParam_t.txt"}} */ |
|
131 |
|
132 |
|
133 |
|
134 |
|
135 /* |
|
136 * Function prototypes |
|
137 */ |
|
138 |
|
139 void blcAddBlock(int *block, |
|
140 u_char HUGE *frame_p, |
|
141 int xSize, |
|
142 int mbPlace, u_char fourMVs, int *prevDiffBlock); |
|
143 |
|
144 void blcBlockToFrame(int *block, |
|
145 u_char HUGE *frame_p, |
|
146 int xSize); |
|
147 |
|
148 int blcCopyPredictionMB(blcCopyPredictionMBParam_t *param); |
|
149 |
|
150 |
|
151 |
|
152 #endif |
|
153 |
|
154 // End of file |
|