1 @*****************************************************************************
2 @ yuyv_i422_neon.S : ARM NEONv1 packed to planar YUV422 conversion
3 @*****************************************************************************
4 @ Copyright (C) 2011 RĂ©mi 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 @****************************************************************************/
35 .global yuyv_i422_neon
36 .type yuyv_i422_neon, %function
39 ldmia r0, {Y, U, V, YPAD}
43 sub IPAD, IPAD, WIDTH, lsl #1
49 subs COUNT, COUNT, #16
50 vld1.u8 {q0-q1}, [I,:128]!
52 @ TODO: unroll (1 cycle stall)
54 vst1.u8 {q0}, [Y,:128]!
55 vst1.u8 {d2}, [U,:64]!
56 vst1.u8 {d3}, [V,:64]!
62 add U, U, YPAD, lsr #1
63 add V, V, YPAD, lsr #1
66 .global uyvy_i422_neon
67 .type uyvy_i422_neon, %function
70 ldmia r0, {Y, U, V, YPAD}
74 sub IPAD, IPAD, WIDTH, lsl #1
80 subs COUNT, COUNT, #16
81 vld1.u8 {q0-q1}, [I,:128]!
84 vst1.u8 {q1}, [Y,:128]!
85 vst1.u8 {d0}, [U,:64]!
86 vst1.u8 {d1}, [V,:64]!
92 add U, U, YPAD, lsr #1
93 add V, V, YPAD, lsr #1