SkYUVAInfo::YUVALocation Struct Reference

#include <SkYUVAInfoLocation.h>

Public Member Functions
bool	operator== (const YUVALocation &that) const
bool	operator!= (const YUVALocation &that) const

Static Public Member Functions
static bool	AreValidLocations (const SkYUVAInfo::YUVALocations &locations, int *numPlanes=nullptr)

Public Attributes
int	fPlane = -1
SkColorChannel	fChannel = SkColorChannel::kA

Detailed Description

The location of Y, U, V, or A values within the planes described by SkYUVAInfo. Computed from a SkYUVAInfo and the set of channels present in a set of pixmaps/textures.

Definition at line 20 of file SkYUVAInfoLocation.h.

Member Function Documentation

AreValidLocations()

static bool SkYUVAInfo::YUVALocation::AreValidLocations ( const SkYUVAInfo::YUVALocations &  locations, int *  numPlanes = nullptr  )

inlinestatic

Definition at line 31 of file SkYUVAInfoLocation.h.

                                                            {
        int maxSlotUsed = -1;
        bool used[SkYUVAInfo::kMaxPlanes] = {};
        bool valid = true;
        for (int i = 0; i < SkYUVAInfo::kYUVAChannelCount; ++i) {
            if (locations[i].fPlane < 0) {
                if (i != SkYUVAInfo::YUVAChannels::kA) {
                    valid = false;  // only the 'A' plane can be omitted
                }
            } else if (locations[i].fPlane >= SkYUVAInfo::kMaxPlanes) {
                valid = false;  // A maximum of four input textures is allowed
            } else {
                maxSlotUsed = std::max(locations[i].fPlane, maxSlotUsed);
                used[i] = true;
            }
        }
 
        // All the used slots should be packed starting at 0 with no gaps
        for (int i = 0; i <= maxSlotUsed; ++i) {
            if (!used[i]) {
                valid = false;
            }
        }
 
        if (numPlanes) {
            *numPlanes = valid ? maxSlotUsed + 1 : 0;
        }
        return valid;
    }

operator!=()

bool SkYUVAInfo::YUVALocation::operator!= ( const YUVALocation &  that ) const

inline

Definition at line 29 of file SkYUVAInfoLocation.h.

{ return !(*this == that); }

operator==()

bool SkYUVAInfo::YUVALocation::operator== ( const YUVALocation &  that ) const

inline

Definition at line 26 of file SkYUVAInfoLocation.h.

                                                    {
        return fPlane == that.fPlane && fChannel == that.fChannel;
    }

Member Data Documentation

fChannel

SkColorChannel SkYUVAInfo::YUVALocation::fChannel = SkColorChannel::kA

The channel in the plane that contains the Y, U, V, or A value.

Definition at line 24 of file SkYUVAInfoLocation.h.

fPlane

int SkYUVAInfo::YUVALocation::fPlane = -1

The index of the plane where the Y, U, V, or A value is to be found.

Definition at line 22 of file SkYUVAInfoLocation.h.

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The documentation for this struct was generated from the following file:

• third_party/skia/src/core/SkYUVAInfoLocation.h