|
| enum | YUVAChannels {
kY
, kU
, kV
, kA
,
kLast = kA
} |
| |
| enum class | PlaneConfig {
kUnknown
, kY_U_V
, kY_V_U
, kY_UV
,
kY_VU
, kYUV
, kUYV
, kY_U_V_A
,
kY_V_U_A
, kY_UV_A
, kY_VU_A
, kYUVA
,
kUYVA
, kLast = kUYVA
} |
| | Specifies how YUV (and optionally A) are divided among planes. More...
|
| |
| enum class | Subsampling {
kUnknown
, k444
, k422
, k420
,
k440
, k411
, k410
, kLast = k410
} |
| | UV subsampling is also specified in the enum value names using J:a:b notation (e.g. More...
|
| |
| enum class | Siting { kCentered
} |
| | Describes how subsampled chroma values are sited relative to luma values. More...
|
| |
| using | YUVALocations = std::array< YUVALocation, kYUVAChannelCount > |
| |
|
| | SkYUVAInfo ()=default |
| |
| | SkYUVAInfo (const SkYUVAInfo &)=default |
| |
| | SkYUVAInfo (SkISize dimensions, PlaneConfig, Subsampling, SkYUVColorSpace, SkEncodedOrigin origin=kTopLeft_SkEncodedOrigin, Siting sitingX=Siting::kCentered, Siting sitingY=Siting::kCentered) |
| | 'dimensions' should specify the size of the full resolution image (after planes have been oriented to how the image is displayed as indicated by 'origin'). More...
|
| |
| SkYUVAInfo & | operator= (const SkYUVAInfo &that)=default |
| |
| PlaneConfig | planeConfig () const |
| |
| Subsampling | subsampling () const |
| |
| std::tuple< int, int > | planeSubsamplingFactors (int planeIdx) const |
| |
| SkISize | dimensions () const |
| | Dimensions of the full resolution image (after planes have been oriented to how the image is displayed as indicated by fOrigin). More...
|
| |
| int | width () const |
| |
| int | height () const |
| |
| SkYUVColorSpace | yuvColorSpace () const |
| |
| Siting | sitingX () const |
| |
| Siting | sitingY () const |
| |
| SkEncodedOrigin | origin () const |
| |
| SkMatrix | originMatrix () const |
| |
| bool | hasAlpha () const |
| |
| int | planeDimensions (SkISize planeDimensions[kMaxPlanes]) const |
| | Returns the number of planes and initializes planeDimensions[0]..planeDimensions[<ret>] to the expected dimensions for each plane. More...
|
| |
| size_t | computeTotalBytes (const size_t rowBytes[kMaxPlanes], size_t planeSizes[kMaxPlanes]=nullptr) const |
| | Given a per-plane row bytes, determine size to allocate for all planes. More...
|
| |
| int | numPlanes () const |
| |
| int | numChannelsInPlane (int i) const |
| |
| YUVALocations | toYUVALocations (const uint32_t *channelFlags) const |
| | Given a set of channel flags for each plane, converts this->planeConfig() to YUVALocations representation. More...
|
| |
| SkYUVAInfo | makeSubsampling (SkYUVAInfo::Subsampling) const |
| | Makes a SkYUVAInfo that is identical to this one but with the passed Subsampling. More...
|
| |
| SkYUVAInfo | makeDimensions (SkISize) const |
| | Makes a SkYUVAInfo that is identical to this one but with the passed dimensions. More...
|
| |
| bool | operator== (const SkYUVAInfo &that) const |
| |
| bool | operator!= (const SkYUVAInfo &that) const |
| |
| bool | isValid () const |
| |
|
| static std::tuple< int, int > | SubsamplingFactors (Subsampling) |
| | ratio of Y/A values to U/V values in x and y. More...
|
| |
| static std::tuple< int, int > | PlaneSubsamplingFactors (PlaneConfig, Subsampling, int planeIdx) |
| | SubsamplingFactors(Subsampling) if planedIdx refers to a U/V plane and otherwise {1, 1} if inputs are valid. More...
|
| |
| static int | PlaneDimensions (SkISize imageDimensions, PlaneConfig, Subsampling, SkEncodedOrigin, SkISize planeDimensions[kMaxPlanes]) |
| | Given image dimensions, a planer configuration, subsampling, and origin, determine the expected size of each plane. More...
|
| |
| static constexpr int | NumPlanes (PlaneConfig) |
| | Number of planes for a given PlaneConfig. More...
|
| |
| static constexpr int | NumChannelsInPlane (PlaneConfig, int i) |
| | Number of Y, U, V, A channels in the ith plane for a given PlaneConfig (or 0 if i is invalid). More...
|
| |
| static YUVALocations | GetYUVALocations (PlaneConfig, const uint32_t *planeChannelFlags) |
| | Given a PlaneConfig and a set of channel flags for each plane, convert to YUVALocations representation. More...
|
| |
| static bool | HasAlpha (PlaneConfig) |
| | Does the PlaneConfig have alpha values? More...
|
| |
Specifies the structure of planes for a YUV image with optional alpha.
The actual planar data is not part of this structure and depending on usage is in external textures or pixmaps.
Specifies how YUV (and optionally A) are divided among planes.
Planes are separated by underscores in the enum value names. Within each plane the pixmap/texture channels are mapped to the YUVA channels in the order specified, e.g. for kY_UV Y is in channel 0 of plane 0, U is in channel 0 of plane 1, and V is in channel 1 of plane 1. Channel ordering within a pixmap/texture given the channels it contains: A: 0:A Luminance/Gray: 0:Gray Luminance/Gray + Alpha: 0:Gray, 1:A RG 0:R, 1:G RGB 0:R, 1:G, 2:B RGBA 0:R, 1:G, 2:B, 3:A
| Enumerator |
|---|
| kUnknown | |
| kY_U_V | Plane 0: Y, Plane 1: U, Plane 2: V.
|
| kY_V_U | Plane 0: Y, Plane 1: V, Plane 2: U.
|
| kY_UV | Plane 0: Y, Plane 1: UV.
|
| kY_VU | Plane 0: Y, Plane 1: VU.
|
| kYUV | Plane 0: YUV.
|
| kUYV | Plane 0: UYV.
|
| kY_U_V_A | Plane 0: Y, Plane 1: U, Plane 2: V, Plane 3: A.
|
| kY_V_U_A | Plane 0: Y, Plane 1: V, Plane 2: U, Plane 3: A.
|
| kY_UV_A | Plane 0: Y, Plane 1: UV, Plane 2: A.
|
| kY_VU_A | Plane 0: Y, Plane 1: VU, Plane 2: A.
|
| kYUVA | Plane 0: YUVA.
|
| kUYVA | Plane 0: UYVA.
|
| kLast | |
Given image dimensions, a planer configuration, subsampling, and origin, determine the expected size of each plane.
Returns the number of expected planes. planeDimensions[0] through planeDimensions[<ret>] are written. The input image dimensions are as displayed (after the planes have been transformed to the intended display orientation). The plane dimensions are output as the planes are stored in memory (may be rotated from image dimensions).
