blob: 3782014f87f9ced20533147b05c7f1eaf167184d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <img_utils/Input.h>
namespace android {
namespace img_utils {
Input::~Input() {}
status_t Input::open() { return OK; }
status_t Input::close() { return OK; }
ssize_t Input::skip(size_t count) {
const size_t SKIP_BUF_SIZE = 1024;
uint8_t skipBuf[SKIP_BUF_SIZE];
size_t remaining = count;
while (remaining > 0) {
size_t amt = (SKIP_BUF_SIZE > remaining) ? remaining : SKIP_BUF_SIZE;
ssize_t ret = read(skipBuf, 0, amt);
if (ret < 0) {
if(ret == NOT_ENOUGH_DATA) {
// End of file encountered
if (remaining == count) {
// Read no bytes, return EOF
return NOT_ENOUGH_DATA;
} else {
// Return num bytes read
return count - remaining;
}
}
// Return error code.
return ret;
}
remaining -= ret;
}
return count;
}
} /*namespace img_utils*/
} /*namespace android*/
|