| ; |
| ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| ; |
| ; Use of this source code is governed by a BSD-style license |
| ; that can be found in the LICENSE file in the root of the source |
| ; tree. An additional intellectual property rights grant can be found |
| ; in the file PATENTS. All contributing project authors may |
| ; be found in the AUTHORS file in the root of the source tree. |
| ; |
| |
| |
| EXPORT |vpx_yv12_copy_y_neon| |
| |
| ARM |
| REQUIRE8 |
| PRESERVE8 |
| |
| INCLUDE vpx_scale_asm_offsets.asm |
| |
| AREA ||.text||, CODE, READONLY, ALIGN=2 |
| |
| ;void vpx_yv12_copy_y_neon(const YV12_BUFFER_CONFIG *src_ybc, |
| ; YV12_BUFFER_CONFIG *dst_ybc) |
| |vpx_yv12_copy_y_neon| PROC |
| push {r4 - r11, lr} |
| vpush {d8-d15} |
| |
| ldr r4, [r0, #yv12_buffer_config_y_height] |
| ldr r5, [r0, #yv12_buffer_config_y_width] |
| ldr r6, [r0, #yv12_buffer_config_y_stride] |
| ldr r7, [r1, #yv12_buffer_config_y_stride] |
| ldr r2, [r0, #yv12_buffer_config_y_buffer] ;srcptr1 |
| ldr r3, [r1, #yv12_buffer_config_y_buffer] ;dstptr1 |
| |
| ; copy two rows at one time |
| mov lr, r4, lsr #1 |
| |
| cp_src_to_dst_height_loop1 |
| mov r8, r2 |
| mov r9, r3 |
| add r10, r2, r6 |
| add r11, r3, r7 |
| movs r12, r5, lsr #7 |
| ble extra_copy_needed ; y_width < 128 |
| |
| cp_src_to_dst_width_loop1 |
| vld1.8 {q0, q1}, [r8]! |
| vld1.8 {q8, q9}, [r10]! |
| vld1.8 {q2, q3}, [r8]! |
| vld1.8 {q10, q11}, [r10]! |
| vld1.8 {q4, q5}, [r8]! |
| vld1.8 {q12, q13}, [r10]! |
| vld1.8 {q6, q7}, [r8]! |
| vld1.8 {q14, q15}, [r10]! |
| |
| subs r12, r12, #1 |
| |
| vst1.8 {q0, q1}, [r9]! |
| vst1.8 {q8, q9}, [r11]! |
| vst1.8 {q2, q3}, [r9]! |
| vst1.8 {q10, q11}, [r11]! |
| vst1.8 {q4, q5}, [r9]! |
| vst1.8 {q12, q13}, [r11]! |
| vst1.8 {q6, q7}, [r9]! |
| vst1.8 {q14, q15}, [r11]! |
| |
| bne cp_src_to_dst_width_loop1 |
| |
| subs lr, lr, #1 |
| add r2, r2, r6, lsl #1 |
| add r3, r3, r7, lsl #1 |
| |
| bne cp_src_to_dst_height_loop1 |
| |
| extra_copy_needed |
| ands r10, r5, #0x7f ;check to see if extra copy is needed |
| sub r11, r5, r10 |
| ldr r2, [r0, #yv12_buffer_config_y_buffer] ;srcptr1 |
| ldr r3, [r1, #yv12_buffer_config_y_buffer] ;dstptr1 |
| bne extra_cp_src_to_dst_width1 |
| end_of_cp_src_to_dst1 |
| |
| vpop {d8 - d15} |
| pop {r4-r11, pc} |
| |
| ;============================= |
| extra_cp_src_to_dst_width1 |
| add r2, r2, r11 |
| add r3, r3, r11 |
| add r0, r8, r6 |
| add r11, r9, r7 |
| |
| mov lr, r4, lsr #1 |
| extra_cp_src_to_dst_height_loop1 |
| mov r8, r2 |
| mov r9, r3 |
| add r0, r8, r6 |
| add r11, r9, r7 |
| |
| mov r12, r10 |
| |
| extra_cp_src_to_dst_width_loop1 |
| vld1.8 {q0}, [r8]! |
| vld1.8 {q1}, [r0]! |
| |
| subs r12, r12, #16 |
| |
| vst1.8 {q0}, [r9]! |
| vst1.8 {q1}, [r11]! |
| bne extra_cp_src_to_dst_width_loop1 |
| |
| subs lr, lr, #1 |
| |
| add r2, r2, r6, lsl #1 |
| add r3, r3, r7, lsl #1 |
| |
| bne extra_cp_src_to_dst_height_loop1 |
| |
| b end_of_cp_src_to_dst1 |
| |
| ENDP |
| |
| END |
