1 /*
2 * Copyright 2011 The LibYuv Project Authors. All rights reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11
12 #include "libyuv/video_common.h"
13
14 #ifdef __cplusplus
15 namespace libyuv {
16 extern "C" {
17 #endif
18
19 #define ARRAY_SIZE(x) (static_cast<int>((sizeof(x) / sizeof(x[0]))))
20
21 struct FourCCAliasEntry {
22 uint32 alias;
23 uint32 canonical;
24 };
25
26 static const FourCCAliasEntry kFourCCAliases[] = {
27 {FOURCC_IYUV, FOURCC_I420},
28 {FOURCC_YU16, FOURCC_I422},
29 {FOURCC_YU24, FOURCC_I444},
30 {FOURCC_YUYV, FOURCC_YUY2},
31 {FOURCC_YUVS, FOURCC_YUY2},
32 {FOURCC_HDYC, FOURCC_UYVY},
33 {FOURCC_2VUY, FOURCC_UYVY},
34 {FOURCC_BA81, FOURCC_BGGR},
35 {FOURCC_JPEG, FOURCC_MJPG}, // Note: JPEG has DHT while MJPG does not.
36 {FOURCC_RGB3, FOURCC_RAW},
37 {FOURCC_BGR3, FOURCC_24BG},
38 };
39
40 LIBYUV_API
CanonicalFourCC(uint32 fourcc)41 uint32 CanonicalFourCC(uint32 fourcc) {
42 for (int i = 0; i < ARRAY_SIZE(kFourCCAliases); ++i) {
43 if (kFourCCAliases[i].alias == fourcc) {
44 return kFourCCAliases[i].canonical;
45 }
46 }
47 // Not an alias, so return it as-is.
48 return fourcc;
49 }
50
51 #ifdef __cplusplus
52 } // extern "C"
53 } // namespace libyuv
54 #endif
55
56