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From: Mans Rullgard <mans@mansr.com>
Date: Mon, 25 Aug 2008 00:05:54 +0000 (+0100)
Subject: ARM: NEON optimised h264_idct_dc_add
X-Git-Url: http://git.mansr.com/?p=ffmpeg.mru;a=commitdiff_plain;h=1097c36b47b5019b2a8668f82796ffe76f482408
ARM: NEON optimised h264_idct_dc_add
---
diff --git a/libavcodec/armv4l/dsputil_neon.c b/libavcodec/armv4l/dsputil_neon.c
index 74f9b4d..6dbe835 100644
--- a/libavcodec/armv4l/dsputil_neon.c
+++ b/libavcodec/armv4l/dsputil_neon.c
@@ -89,6 +89,7 @@ void ff_h264_h_loop_filter_chroma_neon(uint8_t *pix, int stride, int alpha,
int beta, int8_t *tc0);
void ff_h264_idct_add_neon(uint8_t *dst, DCTELEM *block, int stride);
+void ff_h264_idct_dc_add_neon(uint8_t *dst, DCTELEM *block, int stride);
void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
{
@@ -156,4 +157,5 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
c->h264_h_loop_filter_chroma = ff_h264_h_loop_filter_chroma_neon;
c->h264_idct_add = ff_h264_idct_add_neon;
+ c->h264_idct_dc_add = ff_h264_idct_dc_add_neon;
}
diff --git a/libavcodec/armv4l/h264idct_neon.S b/libavcodec/armv4l/h264idct_neon.S
index 8f456f3..34e217f 100644
--- a/libavcodec/armv4l/h264idct_neon.S
+++ b/libavcodec/armv4l/h264idct_neon.S
@@ -75,3 +75,24 @@ ff_h264_idct_add_neon:
bx lr
.endfunc
+
+ .global ff_h264_idct_dc_add_neon
+ .func ff_h264_idct_dc_add_neon
+ff_h264_idct_dc_add_neon:
+ vld1.16 {d2[],d3[]}, [r1,:16]
+ vrshr.s16 q1, q1, #6
+ vld1.32 {d0[0]}, [r0,:32], r2
+ vld1.32 {d0[1]}, [r0,:32], r2
+ vaddw.u8 q2, q1, d0
+ vld1.32 {d1[0]}, [r0,:32], r2
+ vld1.32 {d1[1]}, [r0,:32], r2
+ vaddw.u8 q1, q1, d1
+ vqmovun.s16 d0, q2
+ vqmovun.s16 d1, q1
+ sub r0, r0, r2, lsl #2
+ vst1.32 {d0[0]}, [r0,:32], r2
+ vst1.32 {d0[1]}, [r0,:32], r2
+ vst1.32 {d1[0]}, [r0,:32], r2
+ vst1.32 {d1[1]}, [r0,:32], r2
+ bx lr
+ .endfunc
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