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FFmpeg/libavcodec/armv4l/dsputil_iwmmxt.c
Bernhard Rosenkränzer 6ad1fa5a49 Better ARM support for mplayer/ffmpeg, ported from atty fork 
while playing with some new hardware, I found it's running a forked mplayer
 -- and it looks like they're following the GPL.

 The maintainer's page is here: http://atty.jp/?Zaurus/mplayer
 Unfortunately it's mostly in Japanese, so it's hard to figure out any
  details.

  Their code looks quite interesting (at least to those of us w/ ARM CPUs).

  The patches I've attached are the patches from atty.jp with a couple of
  modifications by myself:
  - ported to current CVS
  - reverted their change of removing SNOW support from ffmpeg
  - cleaned up their bswap mess
  - removed DOS-style linebreaks from various files

patch by (Bernhard Rosenkraenzer: bero, arklinux org)

Originally committed as revision 4311 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-05-26 14:32:46 +00:00

169 lines
7.5 KiB
C
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/*
* iWMMXt optimized DSP utils
* Copyright (c) 2004 AGAWA Koji
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "../dsputil.h"
#define DEF(x, y) x ## _no_rnd_ ## y ##_iwmmxt
#define SET_RND(regd) __asm__ __volatile__ ("mov r12, #1 \n\t tbcsth " #regd ", r12":::"r12");
#define WAVG2B "wavg2b"
#include "dsputil_iwmmxt_rnd.h"
#undef DEF
#undef SET_RND
#undef WAVG2B
#define DEF(x, y) x ## _ ## y ##_iwmmxt
#define SET_RND(regd) __asm__ __volatile__ ("mov r12, #2 \n\t tbcsth " #regd ", r12":::"r12");
#define WAVG2B "wavg2br"
#include "dsputil_iwmmxt_rnd.h"
#undef DEF
#undef SET_RND
#undef WAVG2BR
// need scheduling
#define OP(AVG) \
asm volatile ( \
/* alignment */ \
"and r12, %[pixels], #7 \n\t" \
"bic %[pixels], %[pixels], #7 \n\t" \
"tmcr wcgr1, r12 \n\t" \
\
"wldrd wr0, [%[pixels]] \n\t" \
"wldrd wr1, [%[pixels], #8] \n\t" \
"add %[pixels], %[pixels], %[line_size] \n\t" \
"walignr1 wr4, wr0, wr1 \n\t" \
\
"1: \n\t" \
\
"wldrd wr2, [%[pixels]] \n\t" \
"wldrd wr3, [%[pixels], #8] \n\t" \
"add %[pixels], %[pixels], %[line_size] \n\t" \
"pld [%[pixels]] \n\t" \
"walignr1 wr5, wr2, wr3 \n\t" \
AVG " wr6, wr4, wr5 \n\t" \
"wstrd wr6, [%[block]] \n\t" \
"add %[block], %[block], %[line_size] \n\t" \
\
"wldrd wr0, [%[pixels]] \n\t" \
"wldrd wr1, [%[pixels], #8] \n\t" \
"add %[pixels], %[pixels], %[line_size] \n\t" \
"walignr1 wr4, wr0, wr1 \n\t" \
"pld [%[pixels]] \n\t" \
AVG " wr6, wr4, wr5 \n\t" \
"wstrd wr6, [%[block]] \n\t" \
"add %[block], %[block], %[line_size] \n\t" \
\
"subs %[h], %[h], #2 \n\t" \
"bne 1b \n\t" \
: [block]"+r"(block), [pixels]"+r"(pixels), [h]"+r"(h) \
: [line_size]"r"(line_size) \
: "memory", "r12");
void put_pixels8_y2_iwmmxt(uint8_t *block, const uint8_t *pixels, const int line_size, int h)
{
OP("wavg2br");
}
void put_no_rnd_pixels8_y2_iwmmxt(uint8_t *block, const uint8_t *pixels, const int line_size, int h)
{
OP("wavg2b");
}
#undef OP
void add_pixels_clamped_iwmmxt(const DCTELEM *block, uint8_t *pixels, int line_size)
{
uint8_t *pixels2 = pixels + line_size;
__asm__ __volatile__ (
"mov r12, #4 \n\t"
"1: \n\t"
"pld [%[pixels], %[line_size2]] \n\t"
"pld [%[pixels2], %[line_size2]] \n\t"
"wldrd wr4, [%[pixels]] \n\t"
"wldrd wr5, [%[pixels2]] \n\t"
"pld [%[block], #32] \n\t"
"wunpckelub wr6, wr4 \n\t"
"wldrd wr0, [%[block]] \n\t"
"wunpckehub wr7, wr4 \n\t"
"wldrd wr1, [%[block], #8] \n\t"
"wunpckelub wr8, wr5 \n\t"
"wldrd wr2, [%[block], #16] \n\t"
"wunpckehub wr9, wr5 \n\t"
"wldrd wr3, [%[block], #24] \n\t"
"add %[block], %[block], #32 \n\t"
"waddhss wr10, wr0, wr6 \n\t"
"waddhss wr11, wr1, wr7 \n\t"
"waddhss wr12, wr2, wr8 \n\t"
"waddhss wr13, wr3, wr9 \n\t"
"wpackhus wr14, wr10, wr11 \n\t"
"wpackhus wr15, wr12, wr13 \n\t"
"wstrd wr14, [%[pixels]] \n\t"
"add %[pixels], %[pixels], %[line_size2] \n\t"
"subs r12, r12, #1 \n\t"
"wstrd wr15, [%[pixels2]] \n\t"
"add %[pixels2], %[pixels2], %[line_size2] \n\t"
"bne 1b \n\t"
: [block]"+r"(block), [pixels]"+r"(pixels), [pixels2]"+r"(pixels2)
: [line_size2]"r"(line_size << 1)
: "cc", "memory", "r12");
}
static void nop(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
return;
}
void dsputil_init_iwmmxt(DSPContext* c, AVCodecContext *avctx)
{
c->add_pixels_clamped = add_pixels_clamped_iwmmxt;
c->put_pixels_tab[0][0] = put_pixels16_iwmmxt;
c->put_pixels_tab[0][1] = put_pixels16_x2_iwmmxt;
c->put_pixels_tab[0][2] = put_pixels16_y2_iwmmxt;
c->put_pixels_tab[0][3] = put_pixels16_xy2_iwmmxt;
c->put_no_rnd_pixels_tab[0][0] = put_pixels16_iwmmxt;
c->put_no_rnd_pixels_tab[0][1] = put_no_rnd_pixels16_x2_iwmmxt;
c->put_no_rnd_pixels_tab[0][2] = put_no_rnd_pixels16_y2_iwmmxt;
c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_iwmmxt;
c->put_pixels_tab[1][0] = put_pixels8_iwmmxt;
c->put_pixels_tab[1][1] = put_pixels8_x2_iwmmxt;
c->put_pixels_tab[1][2] = put_pixels8_y2_iwmmxt;
c->put_pixels_tab[1][3] = put_pixels8_xy2_iwmmxt;
c->put_no_rnd_pixels_tab[1][0] = put_pixels8_iwmmxt;
c->put_no_rnd_pixels_tab[1][1] = put_no_rnd_pixels8_x2_iwmmxt;
c->put_no_rnd_pixels_tab[1][2] = put_no_rnd_pixels8_y2_iwmmxt;
c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_iwmmxt;
c->avg_pixels_tab[0][0] = avg_pixels16_iwmmxt;
c->avg_pixels_tab[0][1] = avg_pixels16_x2_iwmmxt;
c->avg_pixels_tab[0][2] = avg_pixels16_y2_iwmmxt;
c->avg_pixels_tab[0][3] = avg_pixels16_xy2_iwmmxt;
c->avg_no_rnd_pixels_tab[0][0] = avg_pixels16_iwmmxt;
c->avg_no_rnd_pixels_tab[0][1] = avg_no_rnd_pixels16_x2_iwmmxt;
c->avg_no_rnd_pixels_tab[0][2] = avg_no_rnd_pixels16_y2_iwmmxt;
c->avg_no_rnd_pixels_tab[0][3] = avg_no_rnd_pixels16_xy2_iwmmxt;
c->avg_pixels_tab[1][0] = avg_pixels8_iwmmxt;
c->avg_pixels_tab[1][1] = avg_pixels8_x2_iwmmxt;
c->avg_pixels_tab[1][2] = avg_pixels8_y2_iwmmxt;
c->avg_pixels_tab[1][3] = avg_pixels8_xy2_iwmmxt;
c->avg_no_rnd_pixels_tab[1][0] = avg_no_rnd_pixels8_iwmmxt;
c->avg_no_rnd_pixels_tab[1][1] = avg_no_rnd_pixels8_x2_iwmmxt;
c->avg_no_rnd_pixels_tab[1][2] = avg_no_rnd_pixels8_y2_iwmmxt;
c->avg_no_rnd_pixels_tab[1][3] = avg_no_rnd_pixels8_xy2_iwmmxt;
}
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