| @/***************************************************************************** |
| @* |
| @* 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. |
| @* |
| @*****************************************************************************/ |
| @/** |
| @/** |
| @******************************************************************************* |
| @* |
| @* @brief |
| @* interprediction luma function for copy |
| @* |
| @* @par description: |
| @* copies the array of width 'wd' and height 'ht' from the location pointed |
| @* by 'src' to the location pointed by 'dst' |
| @* |
| @* @param[in] pu1_src |
| @* uword8 pointer to the source |
| @* |
| @* @param[out] pu1_dst |
| @* uword8 pointer to the destination |
| @* |
| @* @param[in] src_strd |
| @* integer source stride |
| @* |
| @* @param[in] dst_strd |
| @* integer destination stride |
| @* |
| @* @param[in] pi1_coeff |
| @* word8 pointer to the filter coefficients |
| @* |
| @* @param[in] ht |
| @* integer height of the array |
| @* |
| @* @param[in] wd |
| @* integer width of the array |
| @* |
| @* @returns |
| @* |
| @* @remarks |
| @* none |
| @* |
| @******************************************************************************* |
| @*/ |
| @void ihevc_inter_pred_luma_copy ( |
| @ uword8 *pu1_src, |
| @ uword8 *pu1_dst, |
| @ word32 src_strd, |
| @ word32 dst_strd, |
| @ word8 *pi1_coeff, |
| @ word32 ht, |
| @ word32 wd ) |
| |
| @**************variables vs registers***************************************** |
| @ r0 => *pu1_src |
| @ r1 => *pu1_dst |
| @ r2 => src_strd |
| @ r3 => dst_strd |
| @ r7 => ht |
| @ r12 => wd |
| |
| .text |
| .align 4 |
| |
| |
| |
| |
| .globl ihevc_inter_pred_luma_copy_a9q |
| |
| .type ihevc_inter_pred_luma_copy_a9q, %function |
| |
| ihevc_inter_pred_luma_copy_a9q: |
| stmfd sp!, {r4-r12, r14} @stack stores the values of the arguments |
| ldr r12,[sp,#48] @loads wd |
| ldr r7,[sp,#44] @loads ht |
| cmp r7,#0 @checks ht == 0 |
| ble end_loops |
| tst r12,#15 @checks wd for multiples for 4 & 8 |
| beq core_loop_wd_16 |
| tst r12,#7 @checks wd for multiples for 4 & 8 |
| beq core_loop_wd_8 |
| sub r11,r12,#4 |
| |
| outer_loop_wd_4: |
| subs r4,r12,#0 @checks wd == 0 |
| ble end_inner_loop_wd_4 |
| |
| inner_loop_wd_4: |
| vld1.32 {d0[0]},[r0] @vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| add r5,r0,r2 @pu1_src_tmp += src_strd |
| add r6,r1,r3 @pu1_dst_tmp += dst_strd |
| vst1.32 {d0[0]},[r1] @vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| vld1.32 {d0[0]},[r5],r2 @vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| add r0,r0,#4 @pu1_src += 4 |
| vst1.32 {d0[0]},[r6],r3 @vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| vld1.32 {d0[0]},[r5],r2 @vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| subs r4,r4,#4 @(wd -4) |
| vst1.32 {d0[0]},[r6],r3 @vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| vld1.32 {d0[0]},[r5],r2 @vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| add r1,r1,#4 @pu1_dst += 4 |
| vst1.32 {d0[0]},[r6],r3 @vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| |
| bgt inner_loop_wd_4 |
| |
| end_inner_loop_wd_4: |
| subs r7,r7,#4 @ht - 4 |
| sub r0,r5,r11 @pu1_src = pu1_src_tmp |
| sub r1,r6,r11 @pu1_dst = pu1_dst_tmp |
| bgt outer_loop_wd_4 |
| |
| end_loops: |
| ldmfd sp!,{r4-r12,r15} @reload the registers from sp |
| |
| |
| core_loop_wd_8: |
| sub r11,r12,#8 |
| |
| outer_loop_wd_8: |
| subs r4,r12,#0 @checks wd |
| ble end_inner_loop_wd_8 |
| |
| inner_loop_wd_8: |
| add r5,r0,r2 @pu1_src_tmp += src_strd |
| vld1.8 {d0},[r0]! @vld1_u8(pu1_src_tmp) |
| add r6,r1,r3 @pu1_dst_tmp += dst_strd |
| vst1.8 {d0},[r1]! @vst1_u8(pu1_dst_tmp, tmp_src) |
| vld1.8 {d1},[r5],r2 @vld1_u8(pu1_src_tmp) |
| vst1.8 {d1},[r6],r3 @vst1_u8(pu1_dst_tmp, tmp_src) |
| subs r4,r4,#8 @wd - 8(loop condition) |
| vld1.8 {d2},[r5],r2 @vld1_u8(pu1_src_tmp) |
| vst1.8 {d2},[r6],r3 @vst1_u8(pu1_dst_tmp, tmp_src) |
| vld1.8 {d3},[r5],r2 @vld1_u8(pu1_src_tmp) |
| vst1.8 {d3},[r6],r3 @vst1_u8(pu1_dst_tmp, tmp_src) |
| bgt inner_loop_wd_8 |
| |
| end_inner_loop_wd_8: |
| subs r7,r7,#4 @ht -= 4 |
| sub r0,r5,r11 @pu1_src = pu1_src_tmp |
| sub r1,r6,r11 @pu1_dst = pu1_dst_tmp |
| bgt outer_loop_wd_8 |
| |
| ldmfd sp!,{r4-r12,r15} @reload the registers from sp |
| |
| core_loop_wd_16: |
| sub r11,r12,#16 |
| |
| outer_loop_wd_16: |
| subs r4,r12,#0 @checks wd |
| ble end_inner_loop_wd_16 |
| |
| inner_loop_wd_16: |
| add r5,r0,r2 @pu1_src_tmp += src_strd |
| vld1.8 {q0},[r0]! @vld1_u8(pu1_src_tmp) |
| add r6,r1,r3 @pu1_dst_tmp += dst_strd |
| vst1.8 {q0},[r1]! @vst1_u8(pu1_dst_tmp, tmp_src) |
| vld1.8 {q1},[r5],r2 @vld1_u8(pu1_src_tmp) |
| vst1.8 {q1},[r6],r3 @vst1_u8(pu1_dst_tmp, tmp_src) |
| subs r4,r4,#16 @wd - 8(loop condition) |
| vld1.8 {q2},[r5],r2 @vld1_u8(pu1_src_tmp) |
| vst1.8 {q2},[r6],r3 @vst1_u8(pu1_dst_tmp, tmp_src) |
| vld1.8 {q3},[r5],r2 @vld1_u8(pu1_src_tmp) |
| vst1.8 {q3},[r6],r3 @vst1_u8(pu1_dst_tmp, tmp_src) |
| bgt inner_loop_wd_16 |
| |
| end_inner_loop_wd_16: |
| subs r7,r7,#4 @ht -= 4 |
| sub r0,r5,r11 @pu1_src = pu1_src_tmp |
| sub r1,r6,r11 @pu1_dst = pu1_dst_tmp |
| bgt outer_loop_wd_16 |
| |
| ldmfd sp!,{r4-r12,r15} @reload the registers from sp |
| |
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