1 @*****************************************************************************
2 @ i422_yuyv.S : ARM NEONv1 I422 to YUYV chroma conversion
3 @*****************************************************************************
4 @ Copyright (C) 2011 Rémi Denis-Courmont
6 @ This program is free software; you can redistribute it and/or modify
7 @ it under the terms of the GNU Lesser General Public License as published by
8 @ the Free Software Foundation; either version 2.1 of the License, or
9 @ (at your option) any later version.
11 @ This program is distributed in the hope that it will be useful,
12 @ but WITHOUT ANY WARRANTY; without even the implied warranty of
13 @ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 @ GNU Lesser General Public License for more details.
16 @ You should have received a copy of the GNU Lesser General Public License
17 @ along with this program; if not, write to the Free Software Foundation,
18 @ Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19 @****************************************************************************/
36 .global i422_yuyv_neon
37 .type i422_yuyv_neon, %function
40 ldmia r1, {Y, U, V, YPAD}
43 sub OPAD, OPAD, WIDTH, lsl #1
50 vld1.u8 {d2}, [U,:64]!
52 vld1.u8 {d3}, [V,:64]!
55 subs COUNT, COUNT, #16
56 vld1.u8 {q0}, [Y,:128]!
58 @ TODO: unroll (1 cycle stall)
59 vst1.u8 {q0-q1}, [O,:128]!
63 add U, U, YPAD, lsr #1
64 add V, V, YPAD, lsr #1
69 .global i422_uyvy_neon
70 .type i422_uyvy_neon, %function
73 ldmia r1, {Y, U, V, YPAD}
76 sub OPAD, OPAD, WIDTH, lsl #1
83 vld1.u8 {d0}, [U,:64]!
85 vld1.u8 {d1}, [V,:64]!
88 subs COUNT, COUNT, #16
89 vld1.u8 {q1}, [Y,:128]!
91 vst1.u8 {q0-q1}, [O,:128]!
95 add U, U, YPAD, lsr #1
96 add V, V, YPAD, lsr #1