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
15namespace libyuv {
16extern "C" {
17#endif
18
19#define ARRAY_SIZE(x) (static_cast<int>((sizeof(x) / sizeof(x[0]))))
20
21struct FourCCAliasEntry {
22  uint32 alias;
23  uint32 canonical;
24};
25
26static 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
40LIBYUV_API
41uint32 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