2 * Copyright (c) 2015 Matthieu Bouron <matthieu.bouron stupeflix.com>
3 * Copyright (c) 2015 Clément Bœsch <clement stupeflix.com>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/arm/asm.S"
24 .macro compute_premult half_u half_v
25 vmov d2, \half_u @ copy left q14 to left q1
26 vmov d3, \half_u @ copy left q14 to right q1
27 vmov d4, \half_v @ copy left q15 to left q2
28 vmov d5, \half_v @ copy left q15 to right q2
30 vzip.16 d2, d3 @ U1U1U2U2U3U3U4U4
31 vzip.16 d4, d5 @ V1V1V2V2V3V3V4V4
33 vmull.s16 q8, d4, d1[0] @ V * v2r (left, red)
34 vmull.s16 q9, d5, d1[0] @ V * v2r (right, red)
35 vmull.s16 q10, d2, d1[1] @ U * u2g
36 vmull.s16 q11, d3, d1[1] @ U * u2g
37 vmlal.s16 q10, d4, d1[2] @ U * u2g + V * v2g (left, green)
38 vmlal.s16 q11, d5, d1[2] @ U * u2g + V * v2g (right, green)
39 vmull.s16 q12, d2, d1[3] @ U * u2b (left, blue)
40 vmull.s16 q13, d3, d1[3] @ U * u2b (right, blue)
43 .macro compute_color dst_comp pre1 pre2
44 vadd.s32 q3, q1, \pre1
45 vadd.s32 q4, q2, \pre2
46 vqrshrun.s32 d10, q3, #13
47 vqrshrun.s32 d11, q4, #13 @ q5 = ({q3,q4} + (1<<12)) >> 13
48 vqmovn.u16 \dst_comp, q5 @ saturate 16bit -> 8bit
51 .macro compute_rgba r g b a
52 compute_color \r, q8, q9
53 compute_color \g, q10, q11
54 compute_color \b, q12, q13
58 .macro compute_half_line dst half_y ofmt
59 vmovl.u8 q7, \half_y @ 8px of Y
62 vmull.s16 q1, d14, d0 @ q1 = (srcY - y_offset) * y_coeff (left)
63 vmull.s16 q2, d15, d0 @ q2 = (srcY - y_offset) * y_coeff (right)
66 compute_rgba d13, d14, d15, d12
70 compute_rgba d12, d13, d14, d15
74 compute_rgba d15, d14, d13, d12
78 compute_rgba d14, d13, d12, d15
81 vst4.8 {q6, q7}, [\dst,:128]!
84 .macro declare_func ifmt ofmt
85 function ff_\ifmt\()_to_\ofmt\()_neon, export=1
88 ldr r4, [sp, #104] @ r4 = srcY
89 ldr r5, [sp, #108] @ r5 = linesizeY
90 ldr r6, [sp, #112] @ r6 = srcC
91 ldr r7, [sp, #116] @ r7 = linesizeC
92 ldr r8, [sp, #120] @ r8 = table
93 ldr r9, [sp, #124] @ r9 = y_offset
94 ldr r10,[sp, #128] @ r10 = y_coeff
95 vdup.16 d0, r10 @ d0 = y_coeff
96 vld1.16 {d1}, [r8] @ d1 = *table
97 add r11, r2, r3 @ r11 = dst + linesize (dst2)
98 add r12, r4, r5 @ r12 = srcY + linesizeY (srcY2)
102 sub r3, r3, r8 @ r3 = linesize * 2 - width * 4 (padding)
103 sub r5, r5, r0 @ r5 = linesizeY * 2 - width (paddingY)
104 sub r7, r7, r0 @ r7 = linesizeC - width (paddingC)
106 mov r8, r0 @ r8 = width
112 vld2.8 {d2, d3}, [r6]! @ q1: interleaved chroma line
115 vsubl.u8 q14, d2, d10 @ q14 = U - 128
116 vsubl.u8 q15, d3, d10 @ q15 = V - 128
118 vsubl.u8 q14, d3, d10 @ q14 = U - 128
119 vsubl.u8 q15, d2, d10 @ q15 = V - 128
122 compute_premult d28, d30
124 vld1.8 {q7}, [r4]! @ first line of luma
125 vmov d28, d15 @ save right of the first line of luma for later use
126 compute_half_line r2, d14, \ofmt
128 vld1.8 {q7}, [r12]! @ second line of luma
129 vmov d30, d15 @ save right of the second line of luma for later use
130 compute_half_line r11, d14, \ofmt
132 compute_premult d29, d31
133 compute_half_line r2, d28, \ofmt
134 compute_half_line r11, d30, \ofmt
136 subs r8, r8, #16 @ width -= 16
139 add r2, r2, r3 @ dst += padding
140 add r4, r4, r5 @ srcY += paddingY
141 add r11, r11, r3 @ dst2 += padding
142 add r12, r12, r5 @ srcY2 += paddingY
143 add r6, r6, r7 @ srcC += paddingC
145 subs r1, r1, #2 @ height -= 2
154 .macro declare_rgb_funcs ifmt
155 declare_func \ifmt, argb
156 declare_func \ifmt, rgba
157 declare_func \ifmt, abgr
158 declare_func \ifmt, bgra
161 declare_rgb_funcs nv12
162 declare_rgb_funcs nv21