xref: /frameworks/av/media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p2/src/omxVCM4P2_IDCT8x8blk_s.s

;//
;// Copyright (C) 2007-2008 ARM Limited
;//
;// Licensed under the Apache License, Version 2.0 (the "License");
;// you may not use this file except in compliance with the License.
;// You may obtain a copy of the License at
;//
;//      http://www.apache.org/licenses/LICENSE-2.0
;//
;// Unless required by applicable law or agreed to in writing, software
;// distributed under the License is distributed on an "AS IS" BASIS,
;// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;// See the License for the specific language governing permissions and
;// limitations under the License.
;//
;//
;//
;// File Name:  omxVCM4P2_IDCT8x8blk_s.s
;// OpenMAX DL: v1.0.2
;// Revision:   12290
;// Date:       Wednesday, April 9, 2008
;//
;//
;//
;//

;// Function:
;//     omxVCM4P2_IDCT8x8blk
;//
        ;// Include headers
        INCLUDE omxtypes_s.h
        INCLUDE armCOMM_s.h

        ;// Define cpu variants
        M_VARIANTS CortexA8

        INCLUDE armCOMM_IDCT_s.h

        IMPORT armCOMM_IDCTPreScale
        ;//
        ;// Function prototype
        ;//
        ;//     OMXResult
        ;//     omxVCM4P2_IDCT8x8blk(const OMX_S16* pSrc,
        ;//                                       OMX_S16* pDst)
        ;//

    IF CortexA8
        M_ALLOC4  ppDest, 4
        M_ALLOC4  pStride, 4
        M_ALLOC8  pBlk, 2*8*8
    ENDIF


    IF CortexA8
        M_START omxVCM4P2_IDCT8x8blk, r11, d15
    ENDIF

    IF CortexA8

;// Declare input registers
pSrc            RN 0
pDst            RN 1

;// Declare other intermediate registers
Result          RN 0

;// Prototype for macro M_IDCT
;// pSrc            RN 0  ;// source data buffer
;// Stride          RN 1  ;// destination stride in bytes
;// pDest           RN 2  ;// destination data buffer
;// pScale          RN 3  ;// pointer to scaling table

pSrc    RN 0
Stride  RN 1
pDest   RN 2
pScale  RN 3

        MOV         pDest, pDst
        LDR         pScale, =armCOMM_IDCTPreScale
        M_IDCT      s9, s16, 16
        MOV         Result, #OMX_Sts_NoErr
        M_END
    ENDIF
        ;// ARM1136JS :LOR: CortexA8

    END