; Copyright (C) 2009 The Android Open Source Project ; ; 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. ;------------------------------------------------------------------------------- ;-- ;-- Abstract : ARMv6 optimized version of h264bsdInterpolateChromaHor function ;-- ;------------------------------------------------------------------------------- IF :DEF: H264DEC_WINASM ;// We dont use REQUIRE8 and PRESERVE8 for winasm ELSE REQUIRE8 PRESERVE8 ENDIF AREA |.text|, CODE ;// h264bsdInterpolateChromaHor register allocation ref RN 0 ptrA RN 0 mb RN 1 block RN 1 x0 RN 2 count RN 2 y0 RN 3 valX RN 3 width RN 4 height RN 5 tmp7 RN 5 chrPW RN 6 tmp8 RN 6 tmp1 RN 7 chrPH RN 7 tmp2 RN 8 tmp3 RN 9 tmp4 RN 10 tmp5 RN 11 tmp6 RN 12 c32 RN 14 xFrac RN 14 ;// Function exports and imports IMPORT h264bsdFillBlock EXPORT h264bsdInterpolateChromaHor ;// Function arguments ;// ;// u8 *ref, : 0xc4 ;// u8 *predPartChroma, : 0xc8 ;// i32 x0, : 0xcc ;// i32 y0, : 0xd0 ;// u32 width, : 0xf8 ;// u32 height, : 0xfc ;// u32 xFrac, : 0x100 ;// u32 chromaPartWidth, : 0x104 ;// u32 chromaPartHeight : 0x108 h264bsdInterpolateChromaHor STMFD sp!, {r0-r11,lr} SUB sp, sp, #0xc4 LDR chrPW, [sp, #0x104] ;// chromaPartWidth LDR width, [sp, #0xf8] ;// width CMP x0, #0 BLT do_fill ADD tmp6, x0, chrPW ;// tmp6 = x0+ chromaPartWidth ADD tmp6, tmp6, #1 ;// tmp6 = x0 + chromaPartWidth + 1 CMP tmp6, width ;// x0+chromaPartWidth+1 > width BHI do_fill CMP y0, #0 BLT do_fill LDR chrPH, [sp, #0x108] ;// chromaPartHeight LDR height, [sp, #0xfc] ;// height ADD tmp6, y0, chrPH ;// tmp6 = y0 + chromaPartHeight CMP tmp6, height BLS skip_fill do_fill LDR chrPH, [sp, #0x108] ;// chromaPartHeight LDR height, [sp, #0xfc] ;// height ADD tmp8, chrPW, #1 ;// tmp8 = chromaPartWidth+1 MOV tmp2, tmp8 ;// tmp2 = chromaPartWidth+1 STMIA sp,{width,height,tmp8,chrPH,tmp2} ADD block, sp, #0x1c ;// block BL h264bsdFillBlock LDR x0, [sp, #0xcc] LDR y0, [sp, #0xd0] LDR ref, [sp, #0xc4] ;// ref STMIA sp,{width,height,tmp8,chrPH,tmp2} ADD block, sp, #0x1c ;// block MLA ref, height, width, ref ;// ref += width * height; MLA block, chrPH, tmp8, block;// block + (chromaPH)*(chromaPW+1) BL h264bsdFillBlock MOV x0, #0 ;// x0 = 0 MOV y0, #0 ;// y0 = 0 STR x0, [sp, #0xcc] STR y0, [sp, #0xd0] ADD ref, sp, #0x1c ;// ref = block STR ref, [sp, #0xc4] ;// ref STR chrPH, [sp, #0xfc] ;// height STR tmp8, [sp, #0xf8] ;// width MOV width, tmp8 SUB chrPW, chrPW, #1 skip_fill MLA tmp3, y0, width, x0 ;// tmp3 = y0*width+x0 LDR xFrac, [sp, #0x100] ;// xFrac ADD ptrA, ref, tmp3 ;// ptrA = ref + y0*width+x0 RSB valX, xFrac, #8 ;// valX = 8-xFrac LDR mb, [sp, #0xc8] ;// predPartChroma ;// pack values to count register ;// [31:28] loop_x (chromaPartWidth-1) ;// [27:24] loop_y (chromaPartHeight-1) ;// [23:20] chromaPartWidth-1 ;// [19:16] chromaPartHeight-1 ;// [15:00] nothing SUB tmp2, chrPH, #1 ;// chromaPartHeight-1 SUB tmp1, chrPW, #1 ;// chromaPartWidth-1 ADD count, count, tmp2, LSL #16 ;// chromaPartHeight-1 ADD count, count, tmp2, LSL #24 ;// loop_y ADD count, count, tmp1, LSL #20 ;// chromaPartWidth-1 AND tmp2, count, #0x00F00000 ;// loop_x PKHBT valX, valX, xFrac, LSL #16 ;// |xFrac|valX | MOV valX, valX, LSL #3 ;// multiply by 8 in advance MOV c32, #32 ;/////////////////////////////////////////////////////////////////////////// ;// Cb ;/////////////////////////////////////////////////////////////////////////// ;// 2x2 pels per iteration ;// bilinear vertical interpolation loop1_y ADD count, count, tmp2, LSL #8 LDRB tmp1, [ptrA, width] LDRB tmp2, [ptrA], #1 loop1_x LDRB tmp3, [ptrA, width] LDRB tmp4, [ptrA], #1 PKHBT tmp5, tmp1, tmp3, LSL #16 PKHBT tmp6, tmp2, tmp4, LSL #16 LDRB tmp1, [ptrA, width] LDRB tmp2, [ptrA], #1 SMLAD tmp5, tmp5, valX, c32 ;// multiply SMLAD tmp6, tmp6, valX, c32 ;// multiply PKHBT tmp7, tmp3, tmp1, LSL #16 PKHBT tmp8, tmp4, tmp2, LSL #16 SMLAD tmp7, tmp7, valX, c32 ;// multiply SMLAD tmp8, tmp8, valX, c32 ;// multiply MOV tmp5, tmp5, LSR #6 ;// scale down STRB tmp5, [mb,#8] ;// store row 2 col 1 MOV tmp6, tmp6, LSR #6 ;// scale down STRB tmp6, [mb],#1 ;// store row 1 col 1 MOV tmp7, tmp7, LSR #6 ;// scale down STRB tmp7, [mb,#8] ;// store row 2 col 2 MOV tmp8, tmp8, LSR #6 ;// scale down STRB tmp8, [mb],#1 ;// store row 1 col 2 SUBS count, count, #2<<28 BCS loop1_x AND tmp2, count, #0x00F00000 ADDS mb, mb, #16 SBC mb, mb, tmp2, LSR #20 ADD ptrA, ptrA, width, LSL #1 SBC ptrA, ptrA, tmp2, LSR #20 SUB ptrA, ptrA, #1 ADDS count, count, #0xE << 24 BGE loop1_y ;/////////////////////////////////////////////////////////////////////////// ;// Cr ;/////////////////////////////////////////////////////////////////////////// LDR height, [sp,#0xfc] ;// height LDR ref, [sp, #0xc4] ;// ref LDR tmp1, [sp, #0xd0] ;// y0 LDR tmp2, [sp, #0xcc] ;// x0 LDR mb, [sp, #0xc8] ;// predPartChroma ADD tmp1, height, tmp1 MLA tmp3, tmp1, width, tmp2 ADD ptrA, ref, tmp3 ADD mb, mb, #64 AND count, count, #0x00FFFFFF AND tmp1, count, #0x000F0000 ADD count, count, tmp1, LSL #8 AND tmp2, count, #0x00F00000 ;// 2x2 pels per iteration ;// bilinear vertical interpolation loop2_y ADD count, count, tmp2, LSL #8 LDRB tmp1, [ptrA, width] LDRB tmp2, [ptrA], #1 loop2_x LDRB tmp3, [ptrA, width] LDRB tmp4, [ptrA], #1 PKHBT tmp5, tmp1, tmp3, LSL #16 PKHBT tmp6, tmp2, tmp4, LSL #16 LDRB tmp1, [ptrA, width] LDRB tmp2, [ptrA], #1 SMLAD tmp5, tmp5, valX, c32 ;// multiply SMLAD tmp6, tmp6, valX, c32 ;// multiply PKHBT tmp7, tmp3, tmp1, LSL #16 PKHBT tmp8, tmp4, tmp2, LSL #16 SMLAD tmp7, tmp7, valX, c32 ;// multiply SMLAD tmp8, tmp8, valX, c32 ;// multiply MOV tmp5, tmp5, LSR #6 ;// scale down STRB tmp5, [mb,#8] ;// store row 2 col 1 MOV tmp6, tmp6, LSR #6 ;// scale down STRB tmp6, [mb],#1 ;// store row 1 col 1 MOV tmp7, tmp7, LSR #6 ;// scale down STRB tmp7, [mb,#8] ;// store row 2 col 2 MOV tmp8, tmp8, LSR #6 ;// scale down STRB tmp8, [mb],#1 ;// store row 1 col 2 SUBS count, count, #2<<28 BCS loop2_x AND tmp2, count, #0x00F00000 ADDS mb, mb, #16 SBC mb, mb, tmp2, LSR #20 ADD ptrA, ptrA, width, LSL #1 SBC ptrA, ptrA, tmp2, LSR #20 SUB ptrA, ptrA, #1 ADDS count, count, #0xE << 24 BGE loop2_y ADD sp,sp,#0xd4 LDMFD sp!, {r4-r11,pc} END