Tizen Native API
Functions | Enumerations | Variables
Dali::Pixel Namespace Reference
Images

Pixel format types and their properties. More...

Functions

bool HasAlpha (Format pixelformat)
 Whether specified pixel format contains an alpha value.
unsigned int GetBytesPerPixel (Format pixelFormat)
 Returns The number of bytes per pixel for the specified pixel format.
void GetAlphaOffsetAndMask (Format pixelFormat, int &byteOffset, int &bitMask)
 Returns the offset of the byte containing the alpha value from the start of the pixel data and the bitmask of that byte to get the alpha value.

Enumerations

enum  Format
 Pixel formats. More...

Variables

const Format FIRST_VALID_PIXEL_FORMAT = A8
 For asserting that a variable has a valid pixel format.
const Format LAST_VALID_PIXEL_FORMAT = COMPRESSED_RGB_PVRTC_4BPPV1
 For asserting that a variable has a valid pixel format.

Detailed Description

Pixel format types and their properties.

Since :
2.4

Enumeration Type Documentation

enum Dali::Pixel::Format

Pixel formats.

Pixel format, default color depth is RGBA 32 bit with alpha

Since :
2.4
Note:
BufferImage::Update might not work with BGR/BGRA formats!
Enumerator:
A8 

color depth 8-bit, alpha

Since :
2.4
L8 

color depth 8-bit, luminance

Since :
2.4
LA88 

color depth 16-bit, luminance with 8 bit alpha

Since :
2.4
RGB565 

color depth 16 bit, 5-6-5

Since :
2.4
BGR565 

color depth 16 bit, 5-6-5

Since :
2.4
RGBA4444 

color depth 16 bit with alpha, 4-4-4-4

Since :
2.4
BGRA4444 

color depth 16 bit with alpha, 4-4-4-4

Since :
2.4
RGBA5551 

color depth 16 bit with alpha, 5-5-5-1

Since :
2.4
BGRA5551 

color depth 16 bit with alpha, 5-5-5-1

Since :
2.4
RGB888 

color depth 24 bit, 8-8-8

Since :
2.4
RGB8888 

color depth 32 bit, alpha is reserved but not used, 8-8-8-8#

Since :
2.4
BGR8888 

color depth 32 bit, alpha is reserved but not used, 8-8-8-8#

Since :
2.4
RGBA8888 

color depth 32 bit with alpha, 8-8-8-8

Since :
2.4
BGRA8888 

color depth 32 bit with alpha, 8-8-8-8

Since :
2.4
COMPRESSED_R11_EAC 

ETC2 / EAC single-channel, unsigned.

Since :
2.4
COMPRESSED_SIGNED_R11_EAC 

ETC2 / EAC single-channel, signed.

Since :
2.4
COMPRESSED_RG11_EAC 

ETC2 / EAC dual-channel, unsigned.

Since :
2.4
COMPRESSED_SIGNED_RG11_EAC 

ETC2 / EAC dual-channel, signed.

Since :
2.4
COMPRESSED_RGB8_ETC2 

ETC2 / EAC RGB.

Since :
2.4
COMPRESSED_SRGB8_ETC2 

ETC2 / EAC RGB using sRGB colourspace.

Since :
2.4
COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 

ETC2 / EAC RGB with single bit per pixel alpha mask.

Since :
2.4
COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 

ETC2 / EAC RGB using sRGB colourspace, with single bit per pixel alpha mask.

Since :
2.4
COMPRESSED_RGBA8_ETC2_EAC 

ETC2 / EAC RGB plus separate alpha channel.

Since :
2.4
COMPRESSED_SRGB8_ALPHA8_ETC2_EAC 

ETC2 / EAC RGB using sRGB colourspace, plus separate alpha channel.

Since :
2.4
COMPRESSED_RGB8_ETC1 

ETC1 RGB as defined by GLES 2 extension OES_compressed_ETC1_RGB8_texture: http://www.khronos.org/registry/gles/extensions/OES/OES_compressed_ETC1_RGB8_texture.txt.

Since :
2.4
COMPRESSED_RGB_PVRTC_4BPPV1 

! Update LAST_VALID_PIXEL_FORMAT below if you add an enum value here.

PowerVR 4bpp RGB format (v1) as defined by extension IMG_texture_compression_pvrtc: http://www.khronos.org/registry/gles/extensions/IMG/IMG_texture_compression_pvrtc.txt

Since :
2.4

Function Documentation

void Dali::Pixel::GetAlphaOffsetAndMask ( Format  pixelFormat,
int &  byteOffset,
int &  bitMask 
)

Returns the offset of the byte containing the alpha value from the start of the pixel data and the bitmask of that byte to get the alpha value.

For example, in case of Pixel::RGBA4444, byteOffset value is 1 and bitMask value is 0x0f. It means the second byte contains the alpha value and the last 4 bits of the byte is the alpha value.

Bitmask is zero if the pixelFormat does not support alpha

Since :
2.4
Parameters:
[in]pixelFormatThe pixel format
[out]byteOffsetThe byte offset of the byte containing the alpha value
[out]bitMaskThe bitmask of the byte to get the alpha value
unsigned int Dali::Pixel::GetBytesPerPixel ( Format  pixelFormat)

Returns The number of bytes per pixel for the specified pixel format.

Since :
2.4
Parameters:
[in]pixelFormatThe pixel format
Returns:
The number of bytes per pixel
bool Dali::Pixel::HasAlpha ( Format  pixelformat)

Whether specified pixel format contains an alpha value.

Since :
2.4
Parameters:
[in]pixelformatPixel format
Returns:
True if format has alpha, false otherwise

Variable Documentation

const Format Dali::Pixel::FIRST_VALID_PIXEL_FORMAT = A8

For asserting that a variable has a valid pixel format.

Sync it to the first value above.

const Format Dali::Pixel::LAST_VALID_PIXEL_FORMAT = COMPRESSED_RGB_PVRTC_4BPPV1

For asserting that a variable has a valid pixel format.

Sync it to the last value above.