When converting from YCbCr to RGB data formats, a color space conversion operation must be performed. This operation is parameterized using a "color space conversion matrix". The VdpCSCMatrix is a data structure representing this information. More...
Data Structures | |
| struct | VdpProcamp |
| Procamp operation parameterization data. More... | |
Macros | |
| #define | VDP_PROCAMP_VERSION 0 |
| #define | VDP_COLOR_STANDARD_ITUR_BT_601 |
| ITU-R BT.601. More... | |
| #define | VDP_COLOR_STANDARD_ITUR_BT_709 |
| ITU-R BT.709. More... | |
| #define | VDP_COLOR_STANDARD_SMPTE_240M |
| SMPTE-240M. More... | |
Typedefs | |
| typedef float | VdpCSCMatrix[3][4] |
| Storage for a color space conversion matrix. More... | |
| typedef uint32_t | VdpColorStandard |
| YCbCr color space specification. More... | |
| typedef VdpStatus | VdpGenerateCSCMatrix(VdpProcamp *procamp, VdpColorStandard standard, VdpCSCMatrix *csc_matrix) |
| Generate a color space conversion matrix. More... | |
Detailed Description
When converting from YCbCr to RGB data formats, a color space conversion operation must be performed. This operation is parameterized using a "color space conversion matrix". The VdpCSCMatrix is a data structure representing this information.
Macro Definition Documentation
◆ VDP_COLOR_STANDARD_ITUR_BT_601
| #define VDP_COLOR_STANDARD_ITUR_BT_601 |
ITU-R BT.601.
◆ VDP_COLOR_STANDARD_ITUR_BT_709
| #define VDP_COLOR_STANDARD_ITUR_BT_709 |
ITU-R BT.709.
◆ VDP_COLOR_STANDARD_SMPTE_240M
| #define VDP_COLOR_STANDARD_SMPTE_240M |
SMPTE-240M.
◆ VDP_PROCAMP_VERSION
| #define VDP_PROCAMP_VERSION 0 |
Typedef Documentation
◆ VdpColorStandard
| typedef uint32_t VdpColorStandard |
YCbCr color space specification.
A number of YCbCr color spaces exist. This enumeration defines the specifications known to VDPAU.
◆ VdpCSCMatrix
| typedef float VdpCSCMatrix[3][4] |
Storage for a color space conversion matrix.
Note that the application may choose to construct the matrix content by either:
- Directly filling in the fields of the CSC matrix
- Using the VdpGenerateCSCMatrix helper function.
The color space conversion equation is as follows:
![\[ \left( \begin{array}{c} R \\ G \\ B \end{array} \right) = \left( \begin{array}{cccc} m_{0,0} & m_{0,1} & m_{0,2} & m_{0,3} \\ m_{1,0} & m_{1,1} & m_{1,2} & m_{1,3} \\ m_{2,0} & m_{2,1} & m_{2,2} & m_{2,3} \end{array} \right) * \left( \begin{array}{c} Y \\ Cb \\ Cr \\ 1.0 \end{array} \right) \]](form_0.png)
◆ VdpGenerateCSCMatrix
| typedef VdpStatus VdpGenerateCSCMatrix(VdpProcamp *procamp, VdpColorStandard standard, VdpCSCMatrix *csc_matrix) |
Generate a color space conversion matrix.
- Parameters
-
[in] procamp The procamp adjustments to make. If NULL, no adjustments will be made. [in] standard The YCbCr color space to convert from. [out] csc_matrix The CSC matrix to initialize.
- Returns
- VdpStatus The completion status of the operation.
