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ARM: NEON optimised h264_idct_add

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Originally committed as revision 16150 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2008-12-15 22:12:51 +00:00
parent 5813e05d08
commit c598cf25f4
3 changed files with 82 additions and 0 deletions
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1
libavcodec/Makefile
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@ -451,6 +451,7 @@ OBJS-$(HAVE_IWMMXT) += armv4l/dsputil_iwmmxt.o \
OBJS-$(HAVE_NEON) += armv4l/dsputil_neon.o \
armv4l/dsputil_neon_s.o \
armv4l/h264dsp_neon.o \
armv4l/h264idct_neon.o \
armv4l/simple_idct_neon.o \
OBJS-$(ARCH_BFIN) += bfin/dsputil_bfin.o \

4
libavcodec/armv4l/dsputil_neon.c
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@ -92,6 +92,8 @@ void ff_h264_v_loop_filter_chroma_neon(uint8_t *pix, int stride, int alpha,
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_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
{
c->put_pixels_tab[0][0] = ff_put_pixels16_neon;
@ -160,4 +162,6 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
c->h264_h_loop_filter_luma = ff_h264_h_loop_filter_luma_neon;
c->h264_v_loop_filter_chroma = ff_h264_v_loop_filter_chroma_neon;
c->h264_h_loop_filter_chroma = ff_h264_h_loop_filter_chroma_neon;
c->h264_idct_add = ff_h264_idct_add_neon;
}

77
libavcodec/armv4l/h264idct_neon.S Normal file
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@ -0,0 +1,77 @@
/*
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
*
* 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"
.fpu neon
.text
function ff_h264_idct_add_neon, export=1
mov r3, #(1<<5)
vmov.i16 d16, #0
vmov.16 d16[0], r3
vld1.64 {d0-d3}, [r1,:128]
vadd.i16 d0, d0, d16
vswp d1, d2
vadd.i16 d4, d0, d1
vshr.s16 q8, q1, #1
vsub.i16 d5, d0, d1
vadd.i16 d6, d2, d17
vsub.i16 d7, d16, d3
vadd.i16 q0, q2, q3
vsub.i16 q1, q2, q3
vtrn.16 d0, d1
vtrn.16 d3, d2
vtrn.32 d0, d3
vtrn.32 d1, d2
vadd.i16 d4, d0, d3
vld1.32 {d18[0]}, [r0,:32], r2
vswp d1, d3
vshr.s16 q8, q1, #1
vld1.32 {d19[1]}, [r0,:32], r2
vsub.i16 d5, d0, d1
vld1.32 {d18[1]}, [r0,:32], r2
vadd.i16 d6, d16, d3
vld1.32 {d19[0]}, [r0,:32], r2
vsub.i16 d7, d2, d17
sub r0, r0, r2, lsl #2
vadd.i16 q0, q2, q3
vsub.i16 q1, q2, q3
vshr.s16 q0, q0, #6
vshr.s16 q1, q1, #6
vaddw.u8 q0, q0, d18
vaddw.u8 q1, q1, d19
vqmovun.s16 d0, q0
vqmovun.s16 d1, q1
vst1.32 {d0[0]}, [r0,:32], r2
vst1.32 {d1[1]}, [r0,:32], r2
vst1.32 {d0[1]}, [r0,:32], r2
vst1.32 {d1[0]}, [r0,:32], r2
bx lr
.endfunc