1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libyuv/source/video_common.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,64 @@
1.4 +/*
1.5 + * Copyright 2011 The LibYuv Project Authors. All rights reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +
1.14 +
1.15 +#include "libyuv/video_common.h"
1.16 +
1.17 +#ifdef __cplusplus
1.18 +namespace libyuv {
1.19 +extern "C" {
1.20 +#endif
1.21 +
1.22 +#define ARRAY_SIZE(x) (int)(sizeof(x) / sizeof(x[0]))
1.23 +
1.24 +struct FourCCAliasEntry {
1.25 + uint32 alias;
1.26 + uint32 canonical;
1.27 +};
1.28 +
1.29 +static const struct FourCCAliasEntry kFourCCAliases[] = {
1.30 + {FOURCC_IYUV, FOURCC_I420},
1.31 + {FOURCC_YU16, FOURCC_I422},
1.32 + {FOURCC_YU24, FOURCC_I444},
1.33 + {FOURCC_YUYV, FOURCC_YUY2},
1.34 + {FOURCC_YUVS, FOURCC_YUY2}, // kCMPixelFormat_422YpCbCr8_yuvs
1.35 + {FOURCC_HDYC, FOURCC_UYVY},
1.36 + {FOURCC_2VUY, FOURCC_UYVY}, // kCMPixelFormat_422YpCbCr8
1.37 + {FOURCC_JPEG, FOURCC_MJPG}, // Note: JPEG has DHT while MJPG does not.
1.38 + {FOURCC_DMB1, FOURCC_MJPG},
1.39 + {FOURCC_BA81, FOURCC_BGGR},
1.40 + {FOURCC_RGB3, FOURCC_RAW },
1.41 + {FOURCC_BGR3, FOURCC_24BG},
1.42 + {FOURCC_CM32, FOURCC_BGRA}, // kCMPixelFormat_32ARGB
1.43 + {FOURCC_CM24, FOURCC_RAW }, // kCMPixelFormat_24RGB
1.44 + {FOURCC_L555, FOURCC_RGBO}, // kCMPixelFormat_16LE555
1.45 + {FOURCC_L565, FOURCC_RGBP}, // kCMPixelFormat_16LE565
1.46 + {FOURCC_5551, FOURCC_RGBO}, // kCMPixelFormat_16LE5551
1.47 +};
1.48 +// TODO(fbarchard): Consider mapping kCMPixelFormat_32BGRA to FOURCC_ARGB.
1.49 +// {FOURCC_BGRA, FOURCC_ARGB}, // kCMPixelFormat_32BGRA
1.50 +
1.51 +LIBYUV_API
1.52 +uint32 CanonicalFourCC(uint32 fourcc) {
1.53 + int i;
1.54 + for (i = 0; i < ARRAY_SIZE(kFourCCAliases); ++i) {
1.55 + if (kFourCCAliases[i].alias == fourcc) {
1.56 + return kFourCCAliases[i].canonical;
1.57 + }
1.58 + }
1.59 + // Not an alias, so return it as-is.
1.60 + return fourcc;
1.61 +}
1.62 +
1.63 +#ifdef __cplusplus
1.64 +} // extern "C"
1.65 +} // namespace libyuv
1.66 +#endif
1.67 +
