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FourCC formats grouped, counted with comments

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BUG=133
TEST=still builds
Review URL: https://webrtc-codereview.appspot.com/964006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@457 16f28f9a-4ce2-e073-06de-1de4eb20be90
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fbarchard@google.com 2012-10-30 19:52:35 +00:00
parent fe44ff6781
commit c074e88084
1 changed files with 39 additions and 30 deletions
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69
include/libyuv/video_common.h
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@ -38,44 +38,54 @@ extern "C" {
// http://msdn.microsoft.com/library/windows/desktop/dd206750.aspx#nv12
// http://people.xiph.org/~xiphmont/containers/nut/nut4cc.txt
// FourCC codes grouped according to implementation efficiency.
// Primary formats should convert in 1 efficient step.
// Secondary formats are converted in 2 steps.
// Auxilliary formats call primary converters.
enum FourCC {
// Canonical fourcc codes used in our code.
// 9 Primary YUV formats: 5 planar, 2 biplanar, 2 packed.
FOURCC_I420 = FOURCC('I', '4', '2', '0'),
FOURCC_I422 = FOURCC('I', '4', '2', '2'),
FOURCC_I444 = FOURCC('I', '4', '4', '4'),
FOURCC_I411 = FOURCC('I', '4', '1', '1'),
FOURCC_I400 = FOURCC('I', '4', '0', '0'),
FOURCC_YU12 = FOURCC('Y', 'U', '1', '2'), // Linux version of I420.
FOURCC_YV12 = FOURCC('Y', 'V', '1', '2'),
FOURCC_YV16 = FOURCC('Y', 'V', '1', '6'),
FOURCC_YV24 = FOURCC('Y', 'V', '2', '4'),
FOURCC_NV21 = FOURCC('N', 'V', '2', '1'),
FOURCC_NV12 = FOURCC('N', 'V', '1', '2'),
FOURCC_YUY2 = FOURCC('Y', 'U', 'Y', '2'),
FOURCC_UYVY = FOURCC('U', 'Y', 'V', 'Y'),
// 3 Secondary YUV formats: 2 row biplanar, 1 packed.
FOURCC_M420 = FOURCC('M', '4', '2', '0'),
FOURCC_Q420 = FOURCC('Q', '4', '2', '0'),
FOURCC_V210 = FOURCC('V', '2', '1', '0'),
FOURCC_24BG = FOURCC('2', '4', 'B', 'G'),
// 9 Primary RGB formats: 4 32 bpp, 2 24 bpp, 3 16 bpp.
FOURCC_ARGB = FOURCC('A', 'R', 'G', 'B'),
FOURCC_BGRA = FOURCC('B', 'G', 'R', 'A'),
FOURCC_ABGR = FOURCC('A', 'B', 'G', 'R'),
FOURCC_24BG = FOURCC('2', '4', 'B', 'G'),
FOURCC_RAW = FOURCC('r', 'a', 'w', ' '),
FOURCC_RGBA = FOURCC('R', 'G', 'B', 'A'),
FOURCC_RGBP = FOURCC('R', 'G', 'B', 'P'), // bgr565.
FOURCC_RGBO = FOURCC('R', 'G', 'B', 'O'), // abgr1555.
FOURCC_R444 = FOURCC('R', '4', '4', '4'), // argb4444.
FOURCC_RAW = FOURCC('r', 'a', 'w', ' '),
FOURCC_NV21 = FOURCC('N', 'V', '2', '1'),
FOURCC_NV12 = FOURCC('N', 'V', '1', '2'),
FOURCC_MJPG = FOURCC('M', 'J', 'P', 'G'),
FOURCC_H264 = FOURCC('H', '2', '6', '4'),
// Next four are Bayer RGB formats. The four characters define the order of
// the colours in each 2x2 pixel grid, going left-to-right and top-to-bottom.
// 4 Secondary RGB formats: 4 Bayer Patterns.
FOURCC_RGGB = FOURCC('R', 'G', 'G', 'B'),
FOURCC_BGGR = FOURCC('B', 'G', 'G', 'R'),
FOURCC_GRBG = FOURCC('G', 'R', 'B', 'G'),
FOURCC_GBRG = FOURCC('G', 'B', 'R', 'G'),
// Aliases for canonical fourcc codes, replaced with their canonical
// equivalents by CanonicalFourCC().
// 1 Primary Compressed YUV format.
FOURCC_MJPG = FOURCC('M', 'J', 'P', 'G'),
// 3 Auxiliary YUV variations: 3 with U and V planes are swapped, 1 Alias.
FOURCC_YV12 = FOURCC('Y', 'V', '1', '2'),
FOURCC_YV16 = FOURCC('Y', 'V', '1', '6'),
FOURCC_YV24 = FOURCC('Y', 'V', '2', '4'),
FOURCC_YU12 = FOURCC('Y', 'U', '1', '2'), // Linux version of I420.
// 12 Auxiliary aliases. CanonicalFourCC() maps these to canonical fourcc.
FOURCC_IYUV = FOURCC('I', 'Y', 'U', 'V'), // Alias for I420.
FOURCC_YU16 = FOURCC('Y', 'U', '1', '6'), // Alias for I422.
FOURCC_YU24 = FOURCC('Y', 'U', '2', '4'), // Alias for I444.
@ -89,6 +99,9 @@ enum FourCC {
FOURCC_RGB3 = FOURCC('R', 'G', 'B', '3'), // Alias for RAW.
FOURCC_BGR3 = FOURCC('B', 'G', 'R', '3'), // Alias for 24BG.
// 1 Auxiliary compressed YUV format set aside for capturer.
FOURCC_H264 = FOURCC('H', '2', '6', '4'),
// Match any fourcc.
FOURCC_ANY = 0xFFFFFFFF,
};
@ -100,37 +113,32 @@ enum FourCCBpp {
FOURCC_BPP_I444 = 24,
FOURCC_BPP_I411 = 12,
FOURCC_BPP_I400 = 8,
FOURCC_BPP_YU12 = 12,
FOURCC_BPP_YV12 = 12,
FOURCC_BPP_YV16 = 16,
FOURCC_BPP_YV24 = 24,
FOURCC_BPP_NV21 = 12,
FOURCC_BPP_NV12 = 12,
FOURCC_BPP_YUY2 = 16,
FOURCC_BPP_UYVY = 16,
FOURCC_BPP_M420 = 12,
FOURCC_BPP_Q420 = 12,
FOURCC_BPP_V210 = 22, // 128 / 6 actually.
FOURCC_BPP_24BG = 24,
FOURCC_BPP_ARGB = 32,
FOURCC_BPP_BGRA = 32,
FOURCC_BPP_ABGR = 32,
FOURCC_BPP_RGBA = 32,
FOURCC_BPP_24BG = 24,
FOURCC_BPP_RAW = 24,
FOURCC_BPP_RGBP = 16,
FOURCC_BPP_RGBO = 16,
FOURCC_BPP_R444 = 16,
FOURCC_BPP_RAW = 24,
FOURCC_BPP_NV21 = 12,
FOURCC_BPP_NV12 = 12,
FOURCC_BPP_MJPG = 0, // 0 means unknown.
FOURCC_BPP_H264 = 0,
// Next four are Bayer RGB formats. The four characters define the order of
// the colours in each 2x2 pixel grid, going left-to-right and top-to-bottom.
FOURCC_BPP_RGGB = 8,
FOURCC_BPP_BGGR = 8,
FOURCC_BPP_GRBG = 8,
FOURCC_BPP_GBRG = 8,
// Aliases for canonical fourcc codes, replaced with their canonical
// equivalents by CanonicalFourCC().
FOURCC_BPP_YV12 = 12,
FOURCC_BPP_YV16 = 16,
FOURCC_BPP_YV24 = 24,
FOURCC_BPP_YU12 = 12,
FOURCC_BPP_MJPG = 0, // 0 means unknown.
FOURCC_BPP_H264 = 0,
FOURCC_BPP_IYUV = 12,
FOURCC_BPP_YU16 = 16,
FOURCC_BPP_YU24 = 24,
@ -148,6 +156,7 @@ enum FourCCBpp {
FOURCC_BPP_ANY = 0, // 0 means unknown.
};
// Converts fourcc aliases into canonical ones.
LIBYUV_API uint32 CanonicalFourCC(uint32 fourcc);