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License change and cpu detection patch by (James Morrison <ja2morri at csclub dot uwaterloo dot ca>)

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Originally committed as revision 3058 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
James Morrison 2004-04-24 15:23:50 +00:00 committed by Michael Niedermayer
parent bb476ff367
commit 0f12310fe2
1 changed files with 104 additions and 46 deletions
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78
libavcodec/sparc/dsputil_vis.c
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@ -1,28 +1,27 @@
/*
* motion_comp_vis.c
* dsputil_vis.c
* Copyright (C) 2003 David S. Miller <davem@redhat.com>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
* See http://libmpeg2.sourceforge.net/ for updates.
* This file is part of ffmpeg, a free MPEG-4 video stream decoder.
* See http://ffmpeg.sourceforge.net/ for updates.
*
* mpeg2dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* 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.
*
* mpeg2dec is distributed in the hope that it will be useful,
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* You should have received a copy of the Lesser GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* The *no_round* functions have been added by James A. Morrison, 2003.
/* The *no_round* functions have been added by James A. Morrison, 2003,2004.
The vis code from libmpeg2 was adapted for ffmpeg by James A. Morrison.
Note: This code is GPL'd and may only be distributed in a GPL'd package.
*/
#include "config.h"
@ -30,6 +29,8 @@
#ifdef ARCH_SPARC
#include <inttypes.h>
#include <signal.h>
#include <setjmp.h>
#include "../dsputil.h"
@ -4000,10 +4001,66 @@ void get_pixels_vis(uint8_t *restrict dest, const uint8_t *_ref, int stride)
}
}
static sigjmp_buf jmpbuf;
static volatile sig_atomic_t canjump = 0;
static void sigill_handler (int sig)
{
if (!canjump) {
signal (sig, SIG_DFL);
raise (sig);
}
canjump = 0;
siglongjmp (jmpbuf, 1);
}
#define ACCEL_SPARC_VIS 1
#define ACCEL_SPARC_VIS2 2
static int vis_level ()
{
int accel = 0;
signal (SIGILL, sigill_handler);
if (sigsetjmp (jmpbuf, 1)) {
signal (SIGILL, SIG_DFL);
return accel;
}
canjump = 1;
/* pdist %f0, %f0, %f0 */
__asm__ __volatile__(".word\t0x81b007c0");
canjump = 0;
accel |= ACCEL_SPARC_VIS;
if (sigsetjmp (jmpbuf, 1)) {
signal (SIGILL, SIG_DFL);
return accel;
}
canjump = 1;
/* edge8n %g0, %g0, %g0 */
__asm__ __volatile__(".word\t0x81b00020");
canjump = 0;
accel |= ACCEL_SPARC_VIS2;
signal (SIGILL, SIG_DFL);
return accel;
}
/* libavcodec initialization code */
void dsputil_init_vis(DSPContext* c, AVCodecContext *avctx)
{
/* VIS specific optimisations */
int accel = vis_level ();
if (accel & ACCEL_SPARC_VIS) {
c->get_pixels = get_pixels_vis;
c->put_pixels_tab[0][0] = MC_put_o_16_vis;
c->put_pixels_tab[0][1] = MC_put_x_16_vis;
@ -4045,5 +4102,6 @@ void dsputil_init_vis(DSPContext* c, AVCodecContext *avctx)
c->avg_no_rnd_pixels_tab[1][2] = MC_avg_no_round_y_8_vis;
c->avg_no_rnd_pixels_tab[1][3] = MC_avg_no_round_xy_8_vis;
}
}
#endif /* !(ARCH_SPARC) */