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swscale/arm/yuv2rgb: save a few instructions by processing the luma line interleaved

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Matthieu Bouron 2016-03-28 11:33:38 +00:00 committed by Matthieu Bouron
parent 339668301e
commit 5629361cc2
1 changed files with 30 additions and 50 deletions
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80
libswscale/arm/yuv2rgb_neon.S
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@ -22,62 +22,35 @@
#include "libavutil/arm/asm.S"
.macro compute_premult half_u1, half_u2, half_v1, half_v2
vmov d2, \half_u1 @ copy left q14 to left q1
vmov d3, \half_u1 @ copy left q14 to right q1
vmov d4, \half_u2 @ copy right q14 to left q2
vmov d5, \half_u2 @ copy right q14 to right q2
vmov d6, \half_v1 @ copy left q15 to left q3
vmov d7, \half_v1 @ copy left q15 to right q3
vmov d8, \half_v2 @ copy right q15 to left q4
vmov d9, \half_v2 @ copy right q15 to right q4
vzip.16 d2, d3 @ U1U1U2U2U3U3U4U4
vzip.16 d4, d5 @ U5U5U6U6U7U7U8U8
vzip.16 d6, d7 @ V1V1V2V2V3V3V4V4
vzip.16 d8, d9 @ V5V5V6V6V7V7V8V8
vmul.s16 q8, q3, d1[0] @ V * v2r (left, red)
vmul.s16 q9, q4, d1[0] @ V * v2r (right, red)
vmul.s16 q10, q1, d1[1] @ U * u2g
vmul.s16 q11, q2, d1[1] @ U * u2g
vmla.s16 q10, q3, d1[2] @ U * u2g + V * v2g (left, green)
vmla.s16 q11, q4, d1[2] @ U * u2g + V * v2g (right, green)
vmul.s16 q12, q1, d1[3] @ U * u2b (left, blue)
vmul.s16 q13, q2, d1[3] @ U * u2b (right, blue)
.macro compute_premult
vmul.s16 q8, q15, d1[0] @ q8 = V * v2r
vmul.s16 q9, q14, d1[1] @ q9 = U * u2g
vmla.s16 q9, q15, d1[2] @ q9 = U * u2g + V * v2g
vmul.s16 q10,q14, d1[3] @ q10 = U * u2b
.endm
.macro compute_color dst_comp1 dst_comp2 pre1 pre2
vadd.s16 q1, q14, \pre1
vadd.s16 q2, q15, \pre2
.macro compute_color dst_comp1 dst_comp2 pre
vadd.s16 q1, q14, \pre
vadd.s16 q2, q15, \pre
vqrshrun.s16 \dst_comp1, q1, #6
vqrshrun.s16 \dst_comp2, q2, #6
.endm
.macro compute_rgba r1 g1 b1 a1 r2 g2 b2 a2
compute_color \r1, \r2, q8, q9
compute_color \g1, \g2, q10, q11
compute_color \b1, \b2, q12, q13
compute_color \r1, \r2, q8
compute_color \g1, \g2, q9
compute_color \b1, \b2, q10
vmov.u8 \a1, #255
vmov.u8 \a2, #255
.endm
.macro compute dst y0 y1 ofmt
vmovl.u8 q14, \y0 @ 8px of y
vmovl.u8 q15, \y1 @ 8px of y
vdup.16 q5, r9 @ q5 = y_offset
vmov d14, d0 @ q7 = y_coeff
vmov d15, d0 @ q7 = y_coeff
vsub.s16 q14, q5
vsub.s16 q15, q5
vmul.s16 q14, q7 @ q14 = (srcY - y_offset) * y_coeff (left)
vmul.s16 q15, q7 @ q15 = (srcY - y_offset) * y_coeff (right)
.macro compute dst ofmt
vmovl.u8 q14, d14 @ q14 = Y
vmovl.u8 q15, d15 @ q15 = Y
vsub.s16 q14, q12 @ q14 = (Y - y_offset)
vsub.s16 q15, q12 @ q15 = (Y - y_offset)
vmul.s16 q14, q13 @ q14 = (Y - y_offset) * y_coeff
vmul.s16 q15, q13 @ q15 = (Y - y_offset) * y_coeff
.ifc \ofmt,argb
compute_rgba d7, d8, d9, d6, d11, d12, d13, d10
@ -94,23 +67,27 @@
.ifc \ofmt,bgra
compute_rgba d8, d7, d6, d9, d12, d11, d10, d13
.endif
vzip.8 d6, d10 @ d6 = R1R2R3R4R5R6R7R8 d10 = R9R10R11R12R13R14R15R16
vzip.8 d7, d11 @ d7 = G1G2G3G4G5G6G7G8 d11 = G9G10G11G12G13G14G15G16
vzip.8 d8, d12 @ d8 = B1B2B3B4B5B6B7B8 d12 = B9B10B11B12B13B14B15B16
vzip.8 d9, d13 @ d9 = A1A2A3A4A5A6A7A8 d13 = A9A10A11A12A13A14A15A16
vst4.8 {q3, q4}, [\dst,:128]!
vst4.8 {q5, q6}, [\dst,:128]!
.endm
.macro process_1l_internal dst src ofmt
vld1.8 {q7}, [\src]!
compute \dst, d14, d15, \ofmt
vld2.8 {d14, d15}, [\src]! @ q7 = Y (interleaved)
compute \dst, \ofmt
.endm
.macro process_1l ofmt
compute_premult d28, d29, d30, d31
compute_premult
process_1l_internal r2, r4, \ofmt
.endm
.macro process_2l ofmt
compute_premult d28, d29, d30, d31
compute_premult
process_1l_internal r2, r4, \ofmt
process_1l_internal r11,r12,\ofmt
.endm
@ -263,6 +240,9 @@
.macro declare_func ifmt ofmt
function ff_\ifmt\()_to_\ofmt\()_neon, export=1
load_args_\ifmt
vdup.16 q12, r9 @ q12 = y_offset
vmov d26, d0 @ q13 = y_coeff
vmov d27, d0 @ q13 = y_coeff
1:
mov r8, r0 @ r8 = width
2: