diff options
Diffstat (limited to 'chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/bilinearpredict8x4_neon.asm')
| -rw-r--r-- | chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/bilinearpredict8x4_neon.asm | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/bilinearpredict8x4_neon.asm b/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/bilinearpredict8x4_neon.asm new file mode 100644 index 00000000000..41f5c45ffe7 --- /dev/null +++ b/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/bilinearpredict8x4_neon.asm @@ -0,0 +1,135 @@ +; +; 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 |vp8_bilinear_predict8x4_neon| + ARM + REQUIRE8 + PRESERVE8 + + AREA ||.text||, CODE, READONLY, ALIGN=2 +; r0 unsigned char *src_ptr, +; r1 int src_pixels_per_line, +; r2 int xoffset, +; r3 int yoffset, +; r4 unsigned char *dst_ptr, +; stack(lr) int dst_pitch + +|vp8_bilinear_predict8x4_neon| PROC + push {r4, lr} + + adr r12, bifilter8x4_coeff + ldr r4, [sp, #8] ;load parameters from stack + ldr lr, [sp, #12] ;load parameters from stack + + cmp r2, #0 ;skip first_pass filter if xoffset=0 + beq skip_firstpass_filter + +;First pass: output_height lines x output_width columns (5x8) + add r2, r12, r2, lsl #3 ;calculate filter location + + vld1.u8 {q1}, [r0], r1 ;load src data + vld1.u32 {d31}, [r2] ;load first_pass filter + vld1.u8 {q2}, [r0], r1 + vdup.8 d0, d31[0] ;first_pass filter (d0 d1) + vld1.u8 {q3}, [r0], r1 + vdup.8 d1, d31[4] + vld1.u8 {q4}, [r0], r1 + + vmull.u8 q6, d2, d0 ;(src_ptr[0] * vp8_filter[0]) + vld1.u8 {q5}, [r0], r1 + vmull.u8 q7, d4, d0 + vmull.u8 q8, d6, d0 + vmull.u8 q9, d8, d0 + vmull.u8 q10, d10, d0 + + vext.8 d3, d2, d3, #1 ;construct src_ptr[-1] + vext.8 d5, d4, d5, #1 + vext.8 d7, d6, d7, #1 + vext.8 d9, d8, d9, #1 + vext.8 d11, d10, d11, #1 + + vmlal.u8 q6, d3, d1 ;(src_ptr[1] * vp8_filter[1]) + vmlal.u8 q7, d5, d1 + vmlal.u8 q8, d7, d1 + vmlal.u8 q9, d9, d1 + vmlal.u8 q10, d11, d1 + + vqrshrn.u16 d22, q6, #7 ;shift/round/saturate to u8 + vqrshrn.u16 d23, q7, #7 + vqrshrn.u16 d24, q8, #7 + vqrshrn.u16 d25, q9, #7 + vqrshrn.u16 d26, q10, #7 + +;Second pass: 4x8 +secondpass_filter + cmp r3, #0 ;skip second_pass filter if yoffset=0 + beq skip_secondpass_filter + + add r3, r12, r3, lsl #3 + add r0, r4, lr + + vld1.u32 {d31}, [r3] ;load second_pass filter + add r1, r0, lr + + vdup.8 d0, d31[0] ;second_pass filter parameters (d0 d1) + vdup.8 d1, d31[4] + + vmull.u8 q1, d22, d0 ;(src_ptr[0] * vp8_filter[0]) + vmull.u8 q2, d23, d0 + vmull.u8 q3, d24, d0 + vmull.u8 q4, d25, d0 + + vmlal.u8 q1, d23, d1 ;(src_ptr[pixel_step] * vp8_filter[1]) + vmlal.u8 q2, d24, d1 + vmlal.u8 q3, d25, d1 + vmlal.u8 q4, d26, d1 + + add r2, r1, lr + + vqrshrn.u16 d2, q1, #7 ;shift/round/saturate to u8 + vqrshrn.u16 d3, q2, #7 + vqrshrn.u16 d4, q3, #7 + vqrshrn.u16 d5, q4, #7 + + vst1.u8 {d2}, [r4] ;store result + vst1.u8 {d3}, [r0] + vst1.u8 {d4}, [r1] + vst1.u8 {d5}, [r2] + + pop {r4, pc} + +;-------------------- +skip_firstpass_filter + vld1.u8 {d22}, [r0], r1 ;load src data + vld1.u8 {d23}, [r0], r1 + vld1.u8 {d24}, [r0], r1 + vld1.u8 {d25}, [r0], r1 + vld1.u8 {d26}, [r0], r1 + + b secondpass_filter + +;--------------------- +skip_secondpass_filter + vst1.u8 {d22}, [r4], lr ;store result + vst1.u8 {d23}, [r4], lr + vst1.u8 {d24}, [r4], lr + vst1.u8 {d25}, [r4], lr + + pop {r4, pc} + + ENDP + +;----------------- + +bifilter8x4_coeff + DCD 128, 0, 112, 16, 96, 32, 80, 48, 64, 64, 48, 80, 32, 96, 16, 112 + + END |