|
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 * Individual image buffer handling. |
|
17 * |
|
18 */ |
|
19 |
|
20 |
|
21 /* |
|
22 * Includes |
|
23 */ |
|
24 |
|
25 |
|
26 #include "h263dConfig.h" |
|
27 #include "vdeimb.h" |
|
28 |
|
29 #include "vde.h" |
|
30 |
|
31 |
|
32 /* |
|
33 * Global functions |
|
34 */ |
|
35 |
|
36 /* {{-output"vdeImbAlloc.txt"}} */ |
|
37 /* |
|
38 * vdeImbAlloc |
|
39 * |
|
40 * Parameters: |
|
41 * width width of the luminance image in pixels |
|
42 * height height of the luminance image in pixels |
|
43 * |
|
44 * Function: |
|
45 * This function allocates and initializes a new image buffer of |
|
46 * requested size. |
|
47 * |
|
48 * Returns: |
|
49 * a pointer to the created image buffer, |
|
50 * or NULL if the function failed |
|
51 * |
|
52 * |
|
53 */ |
|
54 |
|
55 vdeImb_t *vdeImbAlloc(int width, int height, int fYuvNeeded) |
|
56 /* {{-output"vdeImbAlloc.txt"}} */ |
|
57 { |
|
58 vdeImb_t *imb; |
|
59 |
|
60 imb = (vdeImb_t *) vdeMalloc(sizeof(vdeImb_t)); |
|
61 if (imb == NULL) |
|
62 return NULL; |
|
63 memset(imb, 0, sizeof(vdeImb_t)); |
|
64 |
|
65 |
|
66 imb->drawItem = renDriAlloc(width, height, fYuvNeeded); |
|
67 if (imb->drawItem == NULL) |
|
68 goto errRenDriAlloc; |
|
69 { |
|
70 int numMBsInPicture; |
|
71 |
|
72 numMBsInPicture = width * height / 256; |
|
73 |
|
74 imb->yQuantParams = (int *) vdeMalloc(numMBsInPicture * sizeof(int)); |
|
75 if (imb->yQuantParams == NULL) |
|
76 goto errYQuantParams; |
|
77 |
|
78 imb->uvQuantParams = (int *) vdeMalloc(numMBsInPicture * sizeof(int)); |
|
79 if (imb->uvQuantParams == NULL) |
|
80 goto errUVQuantParams; |
|
81 |
|
82 } |
|
83 |
|
84 return imb; |
|
85 |
|
86 /* Error situations: release everything in reverse order */ |
|
87 |
|
88 errUVQuantParams: |
|
89 |
|
90 vdeDealloc(imb->yQuantParams); |
|
91 errYQuantParams: |
|
92 |
|
93 renDriFree(imb->drawItem); |
|
94 |
|
95 errRenDriAlloc: |
|
96 |
|
97 vdeDealloc(imb); |
|
98 |
|
99 return NULL; |
|
100 } |
|
101 |
|
102 |
|
103 /* {{-output"vdeImbCopyParameters.txt"}} */ |
|
104 /* |
|
105 * vdeImbCopyParameters |
|
106 * |
|
107 * Parameters: |
|
108 * dstImb destination image buffer |
|
109 * srcImb source image buffer |
|
110 * |
|
111 * Function: |
|
112 * This function copies the srcImb structure to the dstImb structure. |
|
113 * All other parameters are copied but the actual picture contents. |
|
114 * The function handles nested structures correctly. |
|
115 * |
|
116 * Returns: |
|
117 * (See vde.h for descriptions of return values.) |
|
118 * VDE_OK |
|
119 * VDE_ERROR |
|
120 * |
|
121 * |
|
122 */ |
|
123 |
|
124 int vdeImbCopyParameters(vdeImb_t *dstImb, const vdeImb_t *srcImb) |
|
125 /* {{-output"vdeImbCopyParameters.txt"}} */ |
|
126 { |
|
127 /* drawItem */ |
|
128 renDriCopyParameters(dstImb->drawItem, srcImb->drawItem); |
|
129 |
|
130 dstImb->fReferenced = srcImb->fReferenced; |
|
131 dstImb->tr = srcImb->tr; |
|
132 dstImb->trRef = srcImb->trRef; |
|
133 |
|
134 { |
|
135 int numOfMBs = renDriNumOfMBs(srcImb->drawItem); |
|
136 |
|
137 /* yQuantParams */ |
|
138 memcpy( |
|
139 dstImb->yQuantParams, |
|
140 srcImb->yQuantParams, |
|
141 numOfMBs * sizeof(int)); |
|
142 |
|
143 /* uvQuantParams */ |
|
144 memcpy( |
|
145 dstImb->uvQuantParams, |
|
146 srcImb->uvQuantParams, |
|
147 numOfMBs * sizeof(int)); |
|
148 |
|
149 } |
|
150 |
|
151 return VDE_OK; |
|
152 } |
|
153 |
|
154 |
|
155 /* {{-output"vdeImbDealloc.txt"}} */ |
|
156 /* |
|
157 * vdeImbDealloc |
|
158 * |
|
159 * Parameters: |
|
160 * imb a pointer to image buffer to destroy |
|
161 * |
|
162 * Function: |
|
163 * This function deallocates the given image buffer. |
|
164 * |
|
165 * Returns: |
|
166 * Nothing |
|
167 * |
|
168 * |
|
169 */ |
|
170 |
|
171 void vdeImbDealloc(vdeImb_t *imb) |
|
172 /* {{-output"vdeImbDealloc.txt"}} */ |
|
173 { |
|
174 if (!imb) |
|
175 return; |
|
176 |
|
177 if (imb->drawItem) |
|
178 renDriFree(imb->drawItem); |
|
179 |
|
180 vdeDealloc(imb->yQuantParams); |
|
181 vdeDealloc(imb->uvQuantParams); |
|
182 |
|
183 vdeDealloc(imb); |
|
184 } |
|
185 // End of File |