ref: ad1aad69fbed8ccb23d7eeb1e642766f2cdf9a28
dir: /third_party/libyuv/source/video_common.cc/
/*
* Copyright 2011 The LibYuv Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "libyuv/video_common.h"
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
#define ARRAY_SIZE(x) (int)(sizeof(x) / sizeof(x[0]))
struct FourCCAliasEntry {
uint32 alias;
uint32 canonical;
};
static const struct FourCCAliasEntry kFourCCAliases[] = {
{FOURCC_IYUV, FOURCC_I420},
{FOURCC_YU12, FOURCC_I420},
{FOURCC_YU16, FOURCC_I422},
{FOURCC_YU24, FOURCC_I444},
{FOURCC_YUYV, FOURCC_YUY2},
{FOURCC_YUVS, FOURCC_YUY2}, // kCMPixelFormat_422YpCbCr8_yuvs
{FOURCC_HDYC, FOURCC_UYVY},
{FOURCC_2VUY, FOURCC_UYVY}, // kCMPixelFormat_422YpCbCr8
{FOURCC_JPEG, FOURCC_MJPG}, // Note: JPEG has DHT while MJPG does not.
{FOURCC_DMB1, FOURCC_MJPG},
{FOURCC_BA81, FOURCC_BGGR}, // deprecated.
{FOURCC_RGB3, FOURCC_RAW },
{FOURCC_BGR3, FOURCC_24BG},
{FOURCC_CM32, FOURCC_BGRA}, // kCMPixelFormat_32ARGB
{FOURCC_CM24, FOURCC_RAW }, // kCMPixelFormat_24RGB
{FOURCC_L555, FOURCC_RGBO}, // kCMPixelFormat_16LE555
{FOURCC_L565, FOURCC_RGBP}, // kCMPixelFormat_16LE565
{FOURCC_5551, FOURCC_RGBO}, // kCMPixelFormat_16LE5551
};
// TODO(fbarchard): Consider mapping kCMPixelFormat_32BGRA to FOURCC_ARGB.
// {FOURCC_BGRA, FOURCC_ARGB}, // kCMPixelFormat_32BGRA
LIBYUV_API
uint32 CanonicalFourCC(uint32 fourcc) {
int i;
for (i = 0; i < ARRAY_SIZE(kFourCCAliases); ++i) {
if (kFourCCAliases[i].alias == fourcc) {
return kFourCCAliases[i].canonical;
}
}
// Not an alias, so return it as-is.
return fourcc;
}
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif