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authorJanne Grunau <janne-libav@jannau.net>2011-12-05 21:22:57 +0000
committerMans Rullgard <mans@mansr.com>2011-12-06 13:48:25 +0000
commit6c889888662168811389e209bfbc662d70c27627 (patch)
tree03cfeed3360fa8dfe86543fb184cb956aa3f740d /libavcodec/arm/rv40dsp_neon.S
parentf5c05b9aa5aeb6079b76f9da452f8ee4050e8955 (diff)
rv40: NEON optimised weighted prediction
Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'libavcodec/arm/rv40dsp_neon.S')
-rw-r--r--libavcodec/arm/rv40dsp_neon.S85
1 files changed, 85 insertions, 0 deletions
diff --git a/libavcodec/arm/rv40dsp_neon.S b/libavcodec/arm/rv40dsp_neon.S
new file mode 100644
index 0000000000..cafd98add0
--- /dev/null
+++ b/libavcodec/arm/rv40dsp_neon.S
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2011 Janne Grunau <janne-libav@jannau.net>
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "asm.S"
+
+.macro rv40_weight
+ vmovl.u8 q8, d2
+ vmovl.u8 q9, d3
+ vmovl.u8 q10, d4
+ vmovl.u8 q11, d5
+ vmull.u16 q2, d16, d0[2]
+ vmull.u16 q3, d17, d0[2]
+ vmull.u16 q8, d18, d0[2]
+ vmull.u16 q9, d19, d0[2]
+ vmull.u16 q12, d20, d0[0]
+ vmull.u16 q13, d21, d0[0]
+ vmull.u16 q14, d22, d0[0]
+ vmull.u16 q15, d23, d0[0]
+ vshrn.i32 d4, q2, #9
+ vshrn.i32 d5, q3, #9
+ vshrn.i32 d6, q8, #9
+ vshrn.i32 d7, q9, #9
+ vshrn.i32 d16, q12, #9
+ vshrn.i32 d17, q13, #9
+ vshrn.i32 d18, q14, #9
+ vshrn.i32 d19, q15, #9
+ vadd.u16 q2, q2, q8
+ vadd.u16 q3, q3, q9
+ vrshrn.i16 d2, q2, #5
+ vrshrn.i16 d3, q3, #5
+.endm
+
+/* void ff_rv40_weight_func_16_neon(uint8_t *dst, uint8_t *src1, uint8_t *src2,
+ int w1, int w2, int stride) */
+function ff_rv40_weight_func_16_neon, export=1
+ ldr r12, [sp]
+ vmov d0, r3, r12
+ ldr r12, [sp, #4]
+ mov r3, #16
+1:
+ vld1.8 {q1}, [r1,:128], r12
+ vld1.8 {q2}, [r2,:128], r12
+ rv40_weight
+ vst1.8 {q1}, [r0,:128], r12
+ subs r3, r3, #1
+ bne 1b
+ bx lr
+endfunc
+
+/* void ff_rv40_weight_func_8_neon(uint8_t *dst, uint8_t *src1, uint8_t *src2,
+ int w1, int w2, int stride) */
+function ff_rv40_weight_func_8_neon, export=1
+ ldr r12, [sp]
+ vmov d0, r3, r12
+ ldr r12, [sp, #4]
+ mov r3, #8
+1:
+ vld1.8 {d2}, [r1,:64], r12
+ vld1.8 {d3}, [r1,:64], r12
+ vld1.8 {d4}, [r2,:64], r12
+ vld1.8 {d5}, [r2,:64], r12
+ rv40_weight
+ vst1.8 {d2}, [r0,:64], r12
+ vst1.8 {d3}, [r0,:64], r12
+ subs r3, r3, #2
+ bne 1b
+ bx lr
+endfunc