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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/armVCM4P10_TransformResidual4x4_s.s')
| -rwxr-xr-x | media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/armVCM4P10_TransformResidual4x4_s.s | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/armVCM4P10_TransformResidual4x4_s.s b/media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/armVCM4P10_TransformResidual4x4_s.s new file mode 100755 index 0000000..ee9c339 --- /dev/null +++ b/media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/armVCM4P10_TransformResidual4x4_s.s @@ -0,0 +1,186 @@ +;// +;// +;// File Name: armVCM4P10_TransformResidual4x4_s.s +;// OpenMAX DL: v1.0.2 +;// Revision: 12290 +;// Date: Wednesday, April 9, 2008 +;// +;// (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. +;// +;// +;// +;// Description: +;// Transform Residual 4x4 Coefficients +;// +;// + + +;// Include standard headers + + INCLUDE omxtypes_s.h + INCLUDE armCOMM_s.h + + M_VARIANTS CortexA8 + +;// Import symbols required from other files +;// (For example tables) + + + + +;// Set debugging level +;//DEBUG_ON SETL {TRUE} + + + +;// Guarding implementation by the processor name + + + + + + + + +;// Guarding implementation by the processor name + + IF CortexA8 + +;// ARM Registers + +;//Input Registers +pDst RN 0 +pSrc RN 1 + + +;// Neon Registers + +;// Packed Input pixels +dIn0 DN D0.S16 +dIn1 DN D1.S16 +dIn2 DN D2.S16 +dIn3 DN D3.S16 + +;// Intermediate calculations +dZero DN D4.S16 +de0 DN D5.S16 +de1 DN D6.S16 +de2 DN D7.S16 +de3 DN D8.S16 +dIn1RS DN D7.S16 +dIn3RS DN D8.S16 +df0 DN D0.S16 +df1 DN D1.S16 +df2 DN D2.S16 +df3 DN D3.S16 +qf01 QN Q0.32 +qf23 QN Q1.32 +dg0 DN D5.S16 +dg1 DN D6.S16 +dg2 DN D7.S16 +dg3 DN D8.S16 +df1RS DN D7.S16 +df3RS DN D8.S16 + +;// Output pixels +dh0 DN D0.S16 +dh1 DN D1.S16 +dh2 DN D2.S16 +dh3 DN D3.S16 + + + ;// Allocate stack memory required by the function + + + ;// Write function header + M_START armVCM4P10_TransformResidual4x4, ,d8 + + ;****************************************************************** + ;// The strategy used in implementing the transform is as follows:* + ;// Load the 4x4 block into 8 registers * + ;// Transpose the 4x4 matrix * + ;// Perform the row operations (on columns) using SIMD * + ;// Transpose the 4x4 result matrix * + ;// Perform the coloumn operations * + ;// Store the 4x4 block at one go * + ;****************************************************************** + + ;// Load all the 4x4 pixels in transposed form + + VLD4 {dIn0,dIn1,dIn2,dIn3},[pSrc] + + VMOV dZero,#0 ;// Used to right shift by 1 + + + ;**************************************** + ;// Row Operations (Performed on columns) + ;**************************************** + + + VADD de0,dIn0,dIn2 ;// e0 = d0 + d2 + VSUB de1,dIn0,dIn2 ;// e1 = d0 - d2 + VHADD dIn1RS,dIn1,dZero ;// (f1>>1) constZero is a register holding 0 + VHADD dIn3RS,dIn3,dZero + VSUB de2,dIn1RS,dIn3 ;// e2 = (d1>>1) - d3 + VADD de3,dIn1,dIn3RS ;// e3 = d1 + (d3>>1) + VADD df0,de0,de3 ;// f0 = e0 + e3 + VADD df1,de1,de2 ;// f1 = e1 + e2 + VSUB df2,de1,de2 ;// f2 = e1 - e2 + VSUB df3,de0,de3 ;// f3 = e0 - e3 + + + + ;***************************************************************** + ;// Transpose the resultant matrix + ;***************************************************************** + + VTRN df0,df1 + VTRN df2,df3 + VTRN qf01,qf23 + + + ;******************************* + ;// Coloumn Operations + ;******************************* + + + VADD dg0,df0,df2 ;// e0 = d0 + d2 + VSUB dg1,df0,df2 ;// e1 = d0 - d2 + VHADD df1RS,df1,dZero ;// (f1>>1) constZero is a register holding 0 + VHADD df3RS,df3,dZero + VSUB dg2,df1RS,df3 ;// e2 = (d1>>1) - d3 + VADD dg3,df1,df3RS ;// e3 = d1 + (d3>>1) + VADD dh0,dg0,dg3 ;// f0 = e0 + e3 + VADD dh1,dg1,dg2 ;// f1 = e1 + e2 + VSUB dh2,dg1,dg2 ;// f2 = e1 - e2 + VSUB dh3,dg0,dg3 ;// f3 = e0 - e3 + + + ;************************************************ + ;// Calculate final value (colOp[i][j] + 32)>>6 + ;************************************************ + + VRSHR dh0,#6 + VRSHR dh1,#6 + VRSHR dh2,#6 + VRSHR dh3,#6 + + + ;*************************** + ;// Store all the 4x4 pixels + ;*************************** + + VST1 {dh0,dh1,dh2,dh3},[pDst] + + + ;// Set return value + +End + + + ;// Write function tail + M_END + + ENDIF ;//CortexA8 + + END
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