1 ;/** 2 ; * Function: omxVCCOMM_Copy8x8 3 ; * 4 ; * Description: 5 ; * Copies the reference 8x8 block to the current block. 6 ; * Parameters: 7 ; * [in] pSrc - pointer to the reference block in the source frame; must be aligned on an 8-byte boundary. 8 ; * [in] step - distance between the starts of consecutive lines in the reference frame, in bytes; 9 ; * must be a multiple of 8 and must be larger than or equal to 8. 10 ; * [out] pDst - pointer to the destination block; must be aligned on an 8-byte boundary. 11 ; * Return Value: 12 ; * OMX_Sts_NoErr - no error 13 ; * OMX_Sts_BadArgErr - bad arguments; returned under any of the following conditions: 14 ; * - one or more of the following pointers is NULL: pSrc, pDst 15 ; * - one or more of the following pointers is not aligned on an 8-byte boundary: pSrc, pDst 16 ; * - step <8 or step is not a multiple of 8. 17 ; */ 18 19 INCLUDE omxtypes_s.h 20 21 22 M_VARIANTS CortexA8 23 24 IF CortexA8 25 26 27 ;//Input Arguments 28 pSrc RN 0 29 pDst RN 1 30 step RN 2 31 32 ;//Local Variables 33 Count RN 3 34 Return RN 0 35 ;// Neon Registers 36 37 X0 DN D0.S8 38 X1 DN D1.S8 39 X2 DN D2.S8 40 X3 DN D3.S8 41 M_START omxVCCOMM_Copy8x8 42 43 44 45 VLD1 {X0},[pSrc],step ;// Load 8 bytes from 8 byte aligned pSrc, pSrc=pSrc+step after load 46 VLD1 {X1},[pSrc],step 47 VLD1 {X2},[pSrc],step 48 VLD1 {X3},[pSrc],step 49 50 VST1 {X0,X1},[pDst]! ;// Store 16 bytes to 8 byte aligned pDst 51 VST1 {X2,X3},[pDst]! 52 53 VLD1 {X0},[pSrc],step 54 VLD1 {X1},[pSrc],step 55 VLD1 {X2},[pSrc],step 56 VLD1 {X3},[pSrc],step 57 58 VST1 {X0,X1},[pDst]! 59 VST1 {X2,X3},[pDst]! 60 61 MOV Return,#OMX_Sts_NoErr 62 63 M_END 64 ENDIF 65 66 67 68 69 END 70
