| ;/** |
| ; * Function: omxVCCOMM_Copy8x8 |
| ; * |
| ; * Description: |
| ; * Copies the reference 8x8 block to the current block. |
| ; * Parameters: |
| ; * [in] pSrc - pointer to the reference block in the source frame; must be aligned on an 8-byte boundary. |
| ; * [in] step - distance between the starts of consecutive lines in the reference frame, in bytes; |
| ; * must be a multiple of 8 and must be larger than or equal to 8. |
| ; * [out] pDst - pointer to the destination block; must be aligned on an 8-byte boundary. |
| ; * Return Value: |
| ; * OMX_Sts_NoErr - no error |
| ; * OMX_Sts_BadArgErr - bad arguments; returned under any of the following conditions: |
| ; * - one or more of the following pointers is NULL: pSrc, pDst |
| ; * - one or more of the following pointers is not aligned on an 8-byte boundary: pSrc, pDst |
| ; * - step <8 or step is not a multiple of 8. |
| ; */ |
| |
| INCLUDE omxtypes_s.h |
| |
| |
| M_VARIANTS CortexA8 |
| |
| IF CortexA8 |
| |
| |
| ;//Input Arguments |
| pSrc RN 0 |
| pDst RN 1 |
| step RN 2 |
| |
| ;//Local Variables |
| Count RN 3 |
| Return RN 0 |
| ;// Neon Registers |
| |
| X0 DN D0.S8 |
| X1 DN D1.S8 |
| X2 DN D2.S8 |
| X3 DN D3.S8 |
| M_START omxVCCOMM_Copy8x8 |
| |
| |
| |
| VLD1 {X0},[pSrc],step ;// Load 8 bytes from 8 byte aligned pSrc, pSrc=pSrc+step after load |
| VLD1 {X1},[pSrc],step |
| VLD1 {X2},[pSrc],step |
| VLD1 {X3},[pSrc],step |
| |
| VST1 {X0,X1},[pDst]! ;// Store 16 bytes to 8 byte aligned pDst |
| VST1 {X2,X3},[pDst]! |
| |
| VLD1 {X0},[pSrc],step |
| VLD1 {X1},[pSrc],step |
| VLD1 {X2},[pSrc],step |
| VLD1 {X3},[pSrc],step |
| |
| VST1 {X0,X1},[pDst]! |
| VST1 {X2,X3},[pDst]! |
| |
| MOV Return,#OMX_Sts_NoErr |
| |
| M_END |
| ENDIF |
| |
| |
| |
| |
| END |
| |
