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authorDavid Conrad <lessen42@gmail.com>2009-05-23 18:47:26 +0000
committerDavid Conrad <lessen42@gmail.com>2009-05-23 18:47:26 +0000
commit548a99742c2498575d0dbcd1aa030b9d51d28b18 (patch)
tree3bd8b568f24dc447adc7ca6aeb0969d02e62224a /libavcodec/arm/vp3dsp_neon.S
parent6db8697a396c101ce67a8ab7a030aa233b1f7ecf (diff)
ARM: actually add VP3 loop filter
Originally committed as revision 18917 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/arm/vp3dsp_neon.S')
-rw-r--r--libavcodec/arm/vp3dsp_neon.S94
1 files changed, 94 insertions, 0 deletions
diff --git a/libavcodec/arm/vp3dsp_neon.S b/libavcodec/arm/vp3dsp_neon.S
new file mode 100644
index 0000000000..cce80dd3ea
--- /dev/null
+++ b/libavcodec/arm/vp3dsp_neon.S
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2009 David Conrad
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "asm.S"
+
+.macro vp3_loop_filter
+ vsubl.u8 q3, d18, d17
+ vsubl.u8 q2, d16, d19
+ vadd.i16 q1, q3, q3
+ vadd.i16 q2, q2, q3
+ vadd.i16 q0, q1, q2
+ vrshr.s16 q0, q0, #3
+ vmovl.u8 q9, d18
+ vdup.u16 q15, r2
+
+ vabs.s16 q1, q0
+ vshr.s16 q0, q0, #15
+ vqsub.u16 q2, q15, q1
+ vqsub.u16 q3, q2, q1
+ vsub.i16 q1, q2, q3
+ veor q1, q1, q0
+ vsub.i16 q0, q1, q0
+
+ vaddw.u8 q2, q0, d17
+ vsub.i16 q3, q9, q0
+ vqmovun.s16 d0, q2
+ vqmovun.s16 d1, q3
+.endm
+
+function ff_vp3_v_loop_filter_neon, export=1
+ sub ip, r0, r1
+ sub r0, r0, r1, lsl #1
+ vld1.64 {d16}, [r0,:64], r1
+ vld1.64 {d17}, [r0,:64], r1
+ vld1.64 {d18}, [r0,:64], r1
+ vld1.64 {d19}, [r0,:64], r1
+ ldrb r2, [r2, #129*4]
+
+ vp3_loop_filter
+
+ vst1.64 {d0}, [ip,:64], r1
+ vst1.64 {d1}, [ip,:64], r1
+ bx lr
+.endfunc
+
+function ff_vp3_h_loop_filter_neon, export=1
+ sub ip, r0, #1
+ sub r0, r0, #2
+ vld1.32 {d16[]}, [r0], r1
+ vld1.32 {d17[]}, [r0], r1
+ vld1.32 {d18[]}, [r0], r1
+ vld1.32 {d19[]}, [r0], r1
+ vld1.32 {d16[1]}, [r0], r1
+ vld1.32 {d17[1]}, [r0], r1
+ vld1.32 {d18[1]}, [r0], r1
+ vld1.32 {d19[1]}, [r0], r1
+ ldrb r2, [r2, #129*4]
+
+ vtrn.8 d16, d17
+ vtrn.8 d18, d19
+ vtrn.16 d16, d18
+ vtrn.16 d17, d19
+
+ vp3_loop_filter
+
+ vtrn.8 d0, d1
+
+ vst1.16 {d0[0]}, [ip], r1
+ vst1.16 {d1[0]}, [ip], r1
+ vst1.16 {d0[1]}, [ip], r1
+ vst1.16 {d1[1]}, [ip], r1
+ vst1.16 {d0[2]}, [ip], r1
+ vst1.16 {d1[2]}, [ip], r1
+ vst1.16 {d0[3]}, [ip], r1
+ vst1.16 {d1[3]}, [ip], r1
+ bx lr
+.endfunc