mirror of
https://chromium.googlesource.com/libyuv/libyuv
synced 2026-01-01 03:12:16 +08:00
Neon RGBToUV more accurate coefficients and subsample averaging. Instead of adding 4 pixels and making coefficients 4x smaller, this makes the coefficients 2x small and does a shift, for best accuracy.
BUG=297 TESTED=try bots R=tpsiaki@google.com, yunqingwang@google.com Review URL: https://webrtc-codereview.appspot.com/6309004 git-svn-id: http://libyuv.googlecode.com/svn/trunk@920 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
parent
b74ed8076a
commit
06ed625808
@ -1,6 +1,6 @@
|
||||
Name: libyuv
|
||||
URL: http://code.google.com/p/libyuv/
|
||||
Version: 919
|
||||
Version: 920
|
||||
License: BSD
|
||||
License File: LICENSE
|
||||
|
||||
|
||||
@ -11,6 +11,6 @@
|
||||
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
|
||||
#define INCLUDE_LIBYUV_VERSION_H_
|
||||
|
||||
#define LIBYUV_VERSION 919
|
||||
#define LIBYUV_VERSION 920
|
||||
|
||||
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT
|
||||
|
||||
@ -1467,11 +1467,11 @@ void ARGBToUV422Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
|
||||
void ARGBToUV411Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
|
||||
int pix) {
|
||||
asm volatile (
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1485,12 +1485,18 @@ void ARGBToUV411Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
|
||||
"vpaddl.u8 q4, q4 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpaddl.u8 q5, q5 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpaddl.u8 q6, q6 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vpadd.u16 d0, d0, d1 \n" // B 16 shorts -> 8 shorts.
|
||||
"vpadd.u16 d1, d8, d9 \n" // B
|
||||
"vpadd.u16 d2, d2, d3 \n" // G 16 shorts -> 8 shorts.
|
||||
"vpadd.u16 d3, d10, d11 \n" // G
|
||||
"vpadd.u16 d4, d4, d5 \n" // R 16 shorts -> 8 shorts.
|
||||
"vpadd.u16 d5, d12, d13 \n" // R
|
||||
|
||||
"vrshr.u16 q0, q0, #1 \n" // 2x average
|
||||
"vrshr.u16 q1, q1, #1 \n"
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
|
||||
"subs %3, %3, #32 \n" // 32 processed per loop.
|
||||
"vmul.s16 q8, q0, q10 \n" // B
|
||||
"vmls.s16 q8, q1, q11 \n" // G
|
||||
@ -1528,15 +1534,16 @@ void ARGBToUV411Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
|
||||
"vqshrn.u16 d0, q8, #8 \n" /* 16 bit to 8 bit U */ \
|
||||
"vqshrn.u16 d1, q9, #8 \n" /* 16 bit to 8 bit V */
|
||||
|
||||
// TODO(fbarchard): Consider vhadd vertical, then vpaddl horizontal, avoid shr.
|
||||
void ARGBToUVRow_NEON(const uint8* src_argb, int src_stride_argb,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_argb
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1550,6 +1557,11 @@ void ARGBToUVRow_NEON(const uint8* src_argb, int src_stride_argb,
|
||||
"vpadal.u8 q0, q4 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q2, q6 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vrshr.u16 q0, q0, #1 \n" // 2x average
|
||||
"vrshr.u16 q1, q1, #1 \n"
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 32 processed per loop.
|
||||
RGBTOUV(q0, q1, q2)
|
||||
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
|
||||
@ -1571,11 +1583,11 @@ void ARGBToUVJRow_NEON(const uint8* src_argb, int src_stride_argb,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_argb
|
||||
"vmov.s16 q10, #127 / 4 \n" // UB / VR 0.500 coefficient
|
||||
"vmov.s16 q11, #84 / 4 \n" // UG -0.33126 coefficient
|
||||
"vmov.s16 q12, #43 / 4 \n" // UR -0.16874 coefficient
|
||||
"vmov.s16 q13, #20 / 4 \n" // VB -0.08131 coefficient
|
||||
"vmov.s16 q14, #107 / 4 \n" // VG -0.41869 coefficient
|
||||
"vmov.s16 q10, #127 / 2 \n" // UB / VR 0.500 coefficient
|
||||
"vmov.s16 q11, #84 / 2 \n" // UG -0.33126 coefficient
|
||||
"vmov.s16 q12, #43 / 2 \n" // UR -0.16874 coefficient
|
||||
"vmov.s16 q13, #20 / 2 \n" // VB -0.08131 coefficient
|
||||
"vmov.s16 q14, #107 / 2 \n" // VG -0.41869 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1589,6 +1601,11 @@ void ARGBToUVJRow_NEON(const uint8* src_argb, int src_stride_argb,
|
||||
"vpadal.u8 q0, q4 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q2, q6 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vrshr.u16 q0, q0, #1 \n" // 2x average
|
||||
"vrshr.u16 q1, q1, #1 \n"
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 32 processed per loop.
|
||||
RGBTOUV(q0, q1, q2)
|
||||
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
|
||||
@ -1609,11 +1626,11 @@ void BGRAToUVRow_NEON(const uint8* src_bgra, int src_stride_bgra,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_bgra
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1627,6 +1644,11 @@ void BGRAToUVRow_NEON(const uint8* src_bgra, int src_stride_bgra,
|
||||
"vpadal.u8 q3, q7 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q2, q6 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q1, q5 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vrshr.u16 q1, q1, #1 \n" // 2x average
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
"vrshr.u16 q3, q3, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 32 processed per loop.
|
||||
RGBTOUV(q3, q2, q1)
|
||||
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
|
||||
@ -1647,11 +1669,11 @@ void ABGRToUVRow_NEON(const uint8* src_abgr, int src_stride_abgr,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_abgr
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1665,6 +1687,11 @@ void ABGRToUVRow_NEON(const uint8* src_abgr, int src_stride_abgr,
|
||||
"vpadal.u8 q2, q6 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q0, q4 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vrshr.u16 q0, q0, #1 \n" // 2x average
|
||||
"vrshr.u16 q1, q1, #1 \n"
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 32 processed per loop.
|
||||
RGBTOUV(q2, q1, q0)
|
||||
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
|
||||
@ -1685,11 +1712,11 @@ void RGBAToUVRow_NEON(const uint8* src_rgba, int src_stride_rgba,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_rgba
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1703,6 +1730,11 @@ void RGBAToUVRow_NEON(const uint8* src_rgba, int src_stride_rgba,
|
||||
"vpadal.u8 q0, q5 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q1, q6 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q2, q7 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vrshr.u16 q0, q0, #1 \n" // 2x average
|
||||
"vrshr.u16 q1, q1, #1 \n"
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 32 processed per loop.
|
||||
RGBTOUV(q0, q1, q2)
|
||||
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
|
||||
@ -1723,11 +1755,11 @@ void RGB24ToUVRow_NEON(const uint8* src_rgb24, int src_stride_rgb24,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_rgb24
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1741,6 +1773,11 @@ void RGB24ToUVRow_NEON(const uint8* src_rgb24, int src_stride_rgb24,
|
||||
"vpadal.u8 q0, q4 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q2, q6 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vrshr.u16 q0, q0, #1 \n" // 2x average
|
||||
"vrshr.u16 q1, q1, #1 \n"
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 32 processed per loop.
|
||||
RGBTOUV(q0, q1, q2)
|
||||
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
|
||||
@ -1761,11 +1798,11 @@ void RAWToUVRow_NEON(const uint8* src_raw, int src_stride_raw,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_raw
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1779,6 +1816,11 @@ void RAWToUVRow_NEON(const uint8* src_raw, int src_stride_raw,
|
||||
"vpadal.u8 q2, q6 \n" // B 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
|
||||
"vpadal.u8 q0, q4 \n" // R 16 bytes -> 8 shorts.
|
||||
|
||||
"vrshr.u16 q0, q0, #1 \n" // 2x average
|
||||
"vrshr.u16 q1, q1, #1 \n"
|
||||
"vrshr.u16 q2, q2, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 32 processed per loop.
|
||||
RGBTOUV(q2, q1, q0)
|
||||
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
|
||||
@ -1800,11 +1842,11 @@ void RGB565ToUVRow_NEON(const uint8* src_rgb565, int src_stride_rgb565,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_argb
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1830,6 +1872,10 @@ void RGB565ToUVRow_NEON(const uint8* src_rgb565, int src_stride_rgb565,
|
||||
"vpadal.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
|
||||
"vpadal.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
|
||||
|
||||
"vrshr.u16 q4, q4, #1 \n" // 2x average
|
||||
"vrshr.u16 q5, q5, #1 \n"
|
||||
"vrshr.u16 q6, q6, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 16 processed per loop.
|
||||
"vmul.s16 q8, q4, q10 \n" // B
|
||||
"vmls.s16 q8, q5, q11 \n" // G
|
||||
@ -1860,11 +1906,11 @@ void ARGB1555ToUVRow_NEON(const uint8* src_argb1555, int src_stride_argb1555,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_argb
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1890,6 +1936,10 @@ void ARGB1555ToUVRow_NEON(const uint8* src_argb1555, int src_stride_argb1555,
|
||||
"vpadal.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
|
||||
"vpadal.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
|
||||
|
||||
"vrshr.u16 q4, q4, #1 \n" // 2x average
|
||||
"vrshr.u16 q5, q5, #1 \n"
|
||||
"vrshr.u16 q6, q6, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 16 processed per loop.
|
||||
"vmul.s16 q8, q4, q10 \n" // B
|
||||
"vmls.s16 q8, q5, q11 \n" // G
|
||||
@ -1920,11 +1970,11 @@ void ARGB4444ToUVRow_NEON(const uint8* src_argb4444, int src_stride_argb4444,
|
||||
uint8* dst_u, uint8* dst_v, int pix) {
|
||||
asm volatile (
|
||||
"add %1, %0, %1 \n" // src_stride + src_argb
|
||||
"vmov.s16 q10, #112 / 4 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 4 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 4 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 4 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 4 \n" // VG -0.7344 coefficient
|
||||
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
|
||||
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
|
||||
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
|
||||
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
|
||||
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
|
||||
"vmov.u16 q15, #0x8080 \n" // 128.5
|
||||
".p2align 2 \n"
|
||||
"1: \n"
|
||||
@ -1950,6 +2000,10 @@ void ARGB4444ToUVRow_NEON(const uint8* src_argb4444, int src_stride_argb4444,
|
||||
"vpadal.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
|
||||
"vpadal.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
|
||||
|
||||
"vrshr.u16 q4, q4, #1 \n" // 2x average
|
||||
"vrshr.u16 q5, q5, #1 \n"
|
||||
"vrshr.u16 q6, q6, #1 \n"
|
||||
|
||||
"subs %4, %4, #16 \n" // 16 processed per loop.
|
||||
"vmul.s16 q8, q4, q10 \n" // B
|
||||
"vmls.s16 q8, q5, q11 \n" // G
|
||||
|
||||
@ -21,6 +21,7 @@ extern "C" {
|
||||
// NEON downscalers with interpolation.
|
||||
// Provided by Fritz Koenig
|
||||
|
||||
// Read 32x1 throw away even pixels, and write 16x1.
|
||||
void ScaleRowDown2_NEON(const uint8* src_ptr, ptrdiff_t /* src_stride */,
|
||||
uint8* dst, int dst_width) {
|
||||
asm volatile (
|
||||
@ -39,6 +40,7 @@ void ScaleRowDown2_NEON(const uint8* src_ptr, ptrdiff_t /* src_stride */,
|
||||
);
|
||||
}
|
||||
|
||||
// Read 32x2 average down and write 16x1.
|
||||
void ScaleRowDown2Box_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
|
||||
uint8* dst, int dst_width) {
|
||||
asm volatile (
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user