mirror of
https://github.com/mpv-player/mpv
synced 2024-12-17 12:25:03 +00:00
1a1e631ccd
There is no standard mechanism for detecting endianess. Doing it at compile time in a portable way is probably hard. Doing it properly with a configure check is probably hard too. Using the endian definitions in <sys/types.h> (usually includes <endian.h>, which is not available everywhere) works under circumstances, but the previous commit broke it on OSX. Ideally all code should be endian dependent, but that is not possible due to the dependencies (such as FFmpeg, some video output APIs, some audio output APIs). Create a header osdep/endian.h, which contains various fallbacks. Note that the last fallback uses libavutil; however, it's not clear whether AV_HAVE_BIGENDIAN is a public symbol, or whether including <libavutil/bswap.h> really makes it visible. And in fact we don't want to pollute the namespace with libavutil definitions either. Thus it's only the last fallback.
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
#ifndef MPV_IMG_FOURCC_H
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#define MPV_IMG_FOURCC_H
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#include "osdep/endian.h"
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#define MP_FOURCC(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((unsigned)(d)<<24))
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#if BYTE_ORDER == BIG_ENDIAN
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#define MP_FOURCC_E(a,b,c,d) MP_FOURCC(a,b,c,d)
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#else
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#define MP_FOURCC_E(a,b,c,d) MP_FOURCC(d,c,b,a)
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#endif
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#define MP_FOURCC_RGB8 MP_FOURCC_E(8, 'B', 'G', 'R')
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#define MP_FOURCC_RGB12 MP_FOURCC_E(12, 'B', 'G', 'R')
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#define MP_FOURCC_RGB15 MP_FOURCC_E(15, 'B', 'G', 'R')
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#define MP_FOURCC_RGB16 MP_FOURCC_E(16, 'B', 'G', 'R')
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#define MP_FOURCC_RGB24 MP_FOURCC_E(24, 'B', 'G', 'R')
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#define MP_FOURCC_RGB32 MP_FOURCC_E('A', 'B', 'G', 'R')
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#define MP_FOURCC_BGR8 MP_FOURCC_E(8, 'R', 'G', 'B')
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#define MP_FOURCC_BGR12 MP_FOURCC_E(12, 'R', 'G', 'B')
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#define MP_FOURCC_BGR15 MP_FOURCC_E(15, 'R', 'G', 'B')
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#define MP_FOURCC_BGR16 MP_FOURCC_E(16, 'R', 'G', 'B')
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#define MP_FOURCC_BGR24 MP_FOURCC_E(24, 'R', 'G', 'B')
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#define MP_FOURCC_BGR32 MP_FOURCC_E('A', 'R', 'G', 'B')
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#define MP_FOURCC_YVU9 MP_FOURCC('Y', 'U', 'V', '9')
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#define MP_FOURCC_YUV9 MP_FOURCC('Y', 'V', 'U', '9')
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#define MP_FOURCC_YV12 MP_FOURCC('Y', 'V', '1', '2')
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#define MP_FOURCC_I420 MP_FOURCC('I', '4', '2', '0')
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#define MP_FOURCC_IYUV MP_FOURCC('I', 'Y', 'U', 'V')
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#define MP_FOURCC_Y800 MP_FOURCC('Y', '8', '0', '0')
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#define MP_FOURCC_Y8 MP_FOURCC('Y', '8', ' ', ' ')
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#define MP_FOURCC_NV12 MP_FOURCC('N', 'V', '1', '2')
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#define MP_FOURCC_NV21 MP_FOURCC('N', 'V', '2', '1')
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#define MP_FOURCC_UYVY MP_FOURCC('U', 'Y', 'V', 'Y')
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#define MP_FOURCC_YUY2 MP_FOURCC('Y', 'U', 'Y', '2')
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#define MP_FOURCC_MJPEG MP_FOURCC('M', 'J', 'P', 'G')
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// NOTE: no "HM12" decoder exists, as vd_hmblck has been removed
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// likely breaks video with some TV cards
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#define MP_FOURCC_HM12 0x32314D48
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#endif
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