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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/api/armVCCOMM_s.h')
| -rw-r--r-- | media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/api/armVCCOMM_s.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/api/armVCCOMM_s.h b/media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/api/armVCCOMM_s.h new file mode 100644 index 0000000..7f0a9b8 --- /dev/null +++ b/media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/api/armVCCOMM_s.h @@ -0,0 +1,72 @@ +;// +;// +;// File Name: armVCCOMM_s.h +;// OpenMAX DL: v1.0.2 +;// Revision: 9641 +;// Date: Thursday, February 7, 2008 +;// +;// (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. +;// +;// +;// +;// ARM optimized OpenMAX AC header file +;// +;// Formula used: +;// MACRO for calculating median for three values. + + + + IF :LNOT::DEF:ARMVCCOMM_S_H + INCLUDE armCOMM_s.h + M_VARIANTS CortexA8, ARM1136JS + + IF ARM1136JS :LOR: CortexA8 + + ;///* + ;// * Macro: M_MEDIAN3 + ;// * + ;// * Description: Finds the median of three numbers + ;// * + ;// * Remarks: + ;// * + ;// * Parameters: + ;// * [in] x First entry for the list of three numbers. + ;// * [in] y Second entry for the list of three numbers. + ;// * Input value may be corrupted at the end of + ;// * the execution of this macro. + ;// * [in] z Third entry of the list of three numbers. + ;// * Input value corrupted at the end of the + ;// * execution of this macro. + ;// * [in] t Temporary scratch register. + ;// * [out]z Median of the three numbers. + ;// */ + + MACRO + + M_MEDIAN3 $x, $y, $z, $t + + SUBS $t, $y, $z; // if (y < z) + ADDLT $z, $z, $t; // swap y and z + SUBLT $y, $y, $t; + + ;// Now z' <= y', so there are three cases for the + ;// median value, depending on x. + + ;// 1) x <= z' <= y' : median value is z' + ;// 2) z' <= x <= y' : median value is x + ;// 3) z' <= y' <= x : median value is y' + + CMP $z, $x; // if ( x > min(y,z) ) + MOVLT $z, $x; // ans = x + + CMP $x, $y; // if ( x > max(y,z) ) + MOVGT $z, $y; // ans = max(y,z) + + MEND + ENDIF + + + + ENDIF ;// ARMACCOMM_S_H + + END
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