ref: d30fec558e691547950bff755849c1ffb7fe744d
dir: /codec/common/arm/expand_picture_neon.S/
/*!
* \copy
* Copyright (c) 2013, Cisco Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifdef HAVE_NEON
#include "arm_arch_common_macro.S"
WELS_ASM_FUNC_BEGIN ExpandPictureLuma_neon
stmdb sp!, {r4-r8}
//Save the dst
mov r7, r0
mov r8, r3
add r4, r7, r2
sub r4, #1
//For the left and right expand
_expand_picture_luma_loop2:
sub r5, r7, #32
add r6, r4, #1
vld1.8 {d0[], d1[]}, [r7], r1
vld1.8 {d2[], d3[]}, [r4], r1
vst1.8 {q0}, [r5]!
vst1.8 {q0}, [r5]
vst1.8 {q1}, [r6]!
vst1.8 {q1}, [r6]
subs r8, #1
bne _expand_picture_luma_loop2
//for the top and bottom expand
add r2, #64
sub r0, #32
mla r4, r1, r3, r0
sub r4, r1
_expand_picture_luma_loop0:
mov r5, #32
mls r5, r5, r1, r0
add r6, r4, r1
vld1.8 {q0}, [r0]!
vld1.8 {q1}, [r4]!
mov r8, #32
_expand_picture_luma_loop1:
vst1.8 {q0}, [r5], r1
vst1.8 {q1}, [r6], r1
subs r8, #1
bne _expand_picture_luma_loop1
subs r2, #16
bne _expand_picture_luma_loop0
//vldreq.32 d0, [r0]
ldmia sp!, {r4-r8}
WELS_ASM_FUNC_END
WELS_ASM_FUNC_BEGIN ExpandPictureChroma_neon
stmdb sp!, {r4-r9}
//Save the dst
mov r7, r0
mov r8, r3
add r4, r7, r2
sub r4, #1
//For the left and right expand
_expand_picture_chroma_loop2:
sub r5, r7, #16
add r6, r4, #1
vld1.8 {d0[], d1[]}, [r7], r1
vld1.8 {d2[], d3[]}, [r4], r1
vst1.8 {q0}, [r5]
vst1.8 {q1}, [r6]
subs r8, #1
bne _expand_picture_chroma_loop2
//for the top and bottom expand
add r2, #32
mov r9, r2
bic r2, #15
sub r0, #16
mla r4, r1, r3, r0
sub r4, r1
_expand_picture_chroma_loop0:
mov r5, #16
mls r5, r5, r1, r0
add r6, r4, r1
vld1.8 {q0}, [r0]!
vld1.8 {q1}, [r4]!
mov r8, #16
_expand_picture_chroma_loop1:
vst1.8 {q0}, [r5], r1
vst1.8 {q1}, [r6], r1
subs r8, #1
bne _expand_picture_chroma_loop1
subs r2, #16
bne _expand_picture_chroma_loop0
//vldreq.32 d0, [r0]
and r9, #15
cmp r9, #8
bne _expand_picture_chroma_end
mov r5, #16
mls r5, r5, r1, r0
add r6, r4, r1
vld1.8 {d0}, [r0]!
vld1.8 {d2}, [r4]!
mov r8, #16
_expand_picture_chroma_loop3:
vst1.8 {d0}, [r5], r1
vst1.8 {d2}, [r6], r1
subs r8, #1
bne _expand_picture_chroma_loop3
_expand_picture_chroma_end:
ldmia sp!, {r4-r9}
WELS_ASM_FUNC_END
#endif