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