diff options
Diffstat (limited to 'common/arm/ihevc_sao_band_offset_luma.s')
| -rw-r--r-- | common/arm/ihevc_sao_band_offset_luma.s | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/common/arm/ihevc_sao_band_offset_luma.s b/common/arm/ihevc_sao_band_offset_luma.s new file mode 100644 index 0000000..3875377 --- /dev/null +++ b/common/arm/ihevc_sao_band_offset_luma.s @@ -0,0 +1,233 @@ +@/***************************************************************************** +@* +@* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore +@* +@* 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 +@* ihevc_sao_band_offset_luma.s +@* +@* ,:brief +@* Contains function definitions for inter prediction interpolation. +@* Functions are coded using NEON intrinsics and can be compiled using@ ARM +@* RVCT +@* +@* ,:author +@* Parthiban V +@* +@* ,:par List of Functions: +@* +@* +@* ,:remarks +@* None +@* +@******************************************************************************* +@*/ +@void ihevc_sao_band_offset_luma(UWORD8 *pu1_src, +@ WORD32 src_strd, +@ UWORD8 *pu1_src_left, +@ UWORD8 *pu1_src_top, +@ UWORD8 *pu1_src_top_left, +@ WORD32 sao_band_pos, +@ WORD8 *pi1_sao_offset, +@ WORD32 wd, +@ WORD32 ht) +@ +@**************Variables Vs Registers***************************************** +@r0 => *pu1_src +@r1 => src_strd +@r2 => *pu1_src_left +@r3 => *pu1_src_top +@r4 => *pu1_src_top_left +@r5 => sao_band_pos +@r6 => *pi1_sao_offset +@r7 => wd +@r8 => ht + +.text +.p2align 2 + +.extern gu1_table_band_idx +.globl ihevc_sao_band_offset_luma_a9q + +gu1_table_band_idx_addr: +.long gu1_table_band_idx - ulbl1 - 8 + +ihevc_sao_band_offset_luma_a9q: + + STMFD sp!, {r4-r12, r14} @stack stores the values of the arguments + + LDR r8,[sp,#56] @Loads ht + LDR r7,[sp,#52] @Loads wd + + MOV r9,r8 @Move the ht to r9 for loop counter + LDR r5,[sp,#44] @Loads sao_band_pos + ADD r10,r0,r7 @pu1_src[row * src_strd + (wd)] + + LDR r4,[sp,#40] @Loads pu1_src_top_left + SUB r10,r10,#1 @wd-1 + LDR r14, gu1_table_band_idx_addr +ulbl1: + add r14,r14,pc + +SRC_LEFT_LOOP: + LDRB r11,[r10],r1 @Load the value + SUBS r9,r9,#1 @Decrement the loop counter + STRB r11,[r2],#1 @Store the value in pu1_src_left pointer + BNE SRC_LEFT_LOOP + + ADD r9,r3,r7 @pu1_src_top[wd] + VLD1.8 D1,[r14]! @band_table.val[0] + LDR r6,[sp,#48] @Loads pi1_sao_offset + + LSL r11,r5,#3 + VLD1.8 D2,[r14]! @band_table.val[1] + + LDRB r10,[r9,#-1] + VDUP.8 D31,r11 @band_pos + SUB r12,r8,#1 @ht-1 + + STRB r10,[r4] @store to pu1_src_top_left[0] + VLD1.8 D3,[r14]! @band_table.val[2] + MUL r12,r12,r1 @ht-1 * src_strd + + ADD r4,r12,r0 @pu1_src[(ht - 1) * src_strd] + VLD1.8 D4,[r14]! @band_table.val[3] + MOV r9,r7 @Move the wd to r9 for loop counter + +SRC_TOP_LOOP: @wd is always multiple of 8 + VLD1.8 D0,[r4]! @Load pu1_src[(ht - 1) * src_strd + col] + SUBS r9,r9,#8 @Decrement the loop counter by 8 + VST1.8 D0,[r3]! @Store to pu1_src_top[col] + BNE SRC_TOP_LOOP + + VLD1.8 D30,[r6] @pi1_sao_offset load + VADD.I8 D5,D1,D31 @band_table.val[0] = vadd_u8(band_table.val[0], band_pos) + + VDUP.8 D29,D30[1] @vdup_n_u8(pi1_sao_offset[1]) + VADD.I8 D6,D2,D31 @band_table.val[1] = vadd_u8(band_table.val[1], band_pos) + + VDUP.8 D28,D30[2] @vdup_n_u8(pi1_sao_offset[2]) + VADD.I8 D7,D3,D31 @band_table.val[2] = vadd_u8(band_table.val[2], band_pos) + + VDUP.8 D27,D30[3] @vdup_n_u8(pi1_sao_offset[3]) + VADD.I8 D8,D4,D31 @band_table.val[3] = vadd_u8(band_table.val[3], band_pos) + + VDUP.8 D26,D30[4] @vdup_n_u8(pi1_sao_offset[4]) + VADD.I8 D1,D5,D29 @band_table.val[0] = vadd_u8(band_table.val[0], vdup_n_u8(pi1_sao_offset[1])) + + VMOV.I8 D29,#16 @vdup_n_u8(16) + VADD.I8 D2,D6,D28 @band_table.val[1] = vadd_u8(band_table.val[1], vdup_n_u8(pi1_sao_offset[2])) + + CMP r5,#28 + VADD.I8 D3,D7,D27 @band_table.val[2] = vadd_u8(band_table.val[2], vdup_n_u8(pi1_sao_offset[3])) + + VADD.I8 D4,D8,D26 @band_table.val[3] = vadd_u8(band_table.val[3], vdup_n_u8(pi1_sao_offset[4])) + BLT SAO_BAND_POS_0 + +SAO_BAND_POS_28: @case 28 + + VCLE.U8 D12,D4,D29 @vcle_u8(band_table.val[3], vdup_n_u8(16)) + + BNE SAO_BAND_POS_29 + VORR.U8 D4,D4,D12 @band_table.val[3] = vorr_u8(band_table.val[3], au1_cmp) + B SWITCH_BREAK + +SAO_BAND_POS_29: @case 29 + CMP r5,#29 + VCLE.U8 D11,D3,D29 @vcle_u8(band_table.val[2], vdup_n_u8(16)) + + BNE SAO_BAND_POS_30 + VORR.U8 D3,D3,D11 @band_table.val[2] = vorr_u8(band_table.val[2], au1_cmp) + + VAND.U8 D4,D4,D12 @band_table.val[3] = vand_u8(band_table.val[3], au1_cmp) + B SWITCH_BREAK + +SAO_BAND_POS_30: @case 30 + CMP r5,#30 + VCLE.U8 D10,D2,D29 @vcle_u8(band_table.val[1], vdup_n_u8(16)) + + BNE SAO_BAND_POS_31 + VORR.U8 D2,D2,D10 @band_table.val[1] = vorr_u8(band_table.val[1], au1_cmp) + + VAND.U8 D3,D3,D11 @band_table.val[2] = vand_u8(band_table.val[2], au1_cmp) + B SWITCH_BREAK + +SAO_BAND_POS_31: @case 31 + CMP r5,#31 + BNE SWITCH_BREAK + + VCLE.U8 D9,D1,D29 @vcle_u8(band_table.val[0], vdup_n_u8(16)) + VORR.U8 D1,D1,D9 @band_table.val[0] = vorr_u8(band_table.val[0], au1_cmp) + + VAND.U8 D2,D2,D10 @band_table.val[1] = vand_u8(band_table.val[1], au1_cmp) + +SAO_BAND_POS_0: + CMP r5,#0 @case 0 + BNE SWITCH_BREAK + + VCLE.U8 D9,D1,D29 @vcle_u8(band_table.val[0], vdup_n_u8(16)) + VAND.U8 D1,D1,D9 @band_table.val[0] = vand_u8(band_table.val[0], au1_cmp) + +SWITCH_BREAK: + MOV r4,r0 @pu1_src_cpy + MOV r11,r8 @move ht + ADD r5,r4,r1 + +HEIGHT_LOOP: + ADD r6,r5,r1 + VLD1.8 D13,[r4] @au1_cur_row = vld1_u8(pu1_src_cpy) + + ADD r10,r6,r1 + VLD1.8 D15,[r5] @au1_cur_row = vld1_u8(pu1_src_cpy) + + VLD1.8 D17,[r6] @au1_cur_row = vld1_u8(pu1_src_cpy) + + VLD1.8 D19,[r10] @au1_cur_row = vld1_u8(pu1_src_cpy) + VSUB.I8 D14,D13,D31 @vsub_u8(au1_cur_row, band_pos) + + VTBX.8 D13,{D1-D4},D14 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos)) + VSUB.I8 D16,D15,D31 @vsub_u8(au1_cur_row, band_pos) + + VTBX.8 D15,{D1-D4},D16 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos)) + VSUB.I8 D18,D17,D31 @vsub_u8(au1_cur_row, band_pos) + + VTBX.8 D17,{D1-D4},D18 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos)) + VSUB.I8 D20,D19,D31 @vsub_u8(au1_cur_row, band_pos) + + VTBX.8 D19,{D1-D4},D20 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos)) + VST1.8 D13,[r4],r1 @vst1_u8(pu1_src_cpy, au1_cur_row) + + VST1.8 D15,[r5] @vst1_u8(pu1_src_cpy, au1_cur_row) + SUBS r11,r11,#4 @Decrement the ht loop count by 4 + + VST1.8 D17,[r6],r1 @vst1_u8(pu1_src_cpy, au1_cur_row) + + ADD r4,r6,r1 + VST1.8 D19,[r10] @vst1_u8(pu1_src_cpy, au1_cur_row) + ADD r5,r4,r1 + + BNE HEIGHT_LOOP + + SUBS r7,r7,#8 @Decrement the width loop by 8 + ADD r0,r0,#8 + BNE SWITCH_BREAK + + LDMFD sp!,{r4-r12,r15} @Reload the registers from SP + + + + |