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| author | Michael Sevakis <jethead71@rockbox.org> | 2007-04-14 16:35:44 +0000 |
|---|---|---|
| committer | Michael Sevakis <jethead71@rockbox.org> | 2007-04-14 16:35:44 +0000 |
| commit | f4b5a723b06b25babe201b0a97bdeebc716f5bba (patch) | |
| tree | 10a759a0438df774a7b1eab6af0e3995f85ae4d3 /apps/plugins/mpegplayer/cpu_accel.c | |
| parent | 32bd59d4f75f135b26a537f438e0d6b893f1cdfb (diff) | |
| download | rockbox-f4b5a723b06b25babe201b0a97bdeebc716f5bba.zip rockbox-f4b5a723b06b25babe201b0a97bdeebc716f5bba.tar.gz rockbox-f4b5a723b06b25babe201b0a97bdeebc716f5bba.tar.bz2 rockbox-f4b5a723b06b25babe201b0a97bdeebc716f5bba.tar.xz | |
mpeg2dec in mpegplayer: Do a little code slashing and organizing. Much more to come I think.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13159 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/plugins/mpegplayer/cpu_accel.c')
| -rw-r--r-- | apps/plugins/mpegplayer/cpu_accel.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/apps/plugins/mpegplayer/cpu_accel.c b/apps/plugins/mpegplayer/cpu_accel.c deleted file mode 100644 index 2616e04..0000000 --- a/apps/plugins/mpegplayer/cpu_accel.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * cpu_accel.c - * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org> - * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> - * - * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. - * See http://libmpeg2.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 - * (at your option) any later version. - * - * mpeg2dec 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 - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "plugin.h" - -#include "mpeg2dec_config.h" - -#include "mpeg2.h" -#include "attributes.h" -#include "mpeg2_internal.h" - -#ifdef ACCEL_DETECT -#ifdef ARCH_X86 -static inline uint32_t arch_accel (void) -{ - uint32_t eax, ebx, ecx, edx; - int AMD; - uint32_t caps; - -#if !defined(PIC) && !defined(__PIC__) -#define cpuid(op,eax,ebx,ecx,edx) \ - __asm__ ("cpuid" \ - : "=a" (eax), \ - "=b" (ebx), \ - "=c" (ecx), \ - "=d" (edx) \ - : "a" (op) \ - : "cc") -#else /* PIC version : save ebx */ -#define cpuid(op,eax,ebx,ecx,edx) \ - __asm__ ("push %%ebx\n\t" \ - "cpuid\n\t" \ - "movl %%ebx,%1\n\t" \ - "pop %%ebx" \ - : "=a" (eax), \ - "=r" (ebx), \ - "=c" (ecx), \ - "=d" (edx) \ - : "a" (op) \ - : "cc") -#endif - - __asm__ ("pushf\n\t" - "pushf\n\t" - "pop %0\n\t" - "movl %0,%1\n\t" - "xorl $0x200000,%0\n\t" - "push %0\n\t" - "popf\n\t" - "pushf\n\t" - "pop %0\n\t" - "popf" - : "=r" (eax), - "=r" (ebx) - : - : "cc"); - - if (eax == ebx) /* no cpuid */ - return 0; - - cpuid (0x00000000, eax, ebx, ecx, edx); - if (!eax) /* vendor string only */ - return 0; - - AMD = (ebx == 0x68747541) && (ecx == 0x444d4163) && (edx == 0x69746e65); - - cpuid (0x00000001, eax, ebx, ecx, edx); - if (! (edx & 0x00800000)) /* no MMX */ - return 0; - - caps = MPEG2_ACCEL_X86_MMX; - if (edx & 0x02000000) /* SSE - identical to AMD MMX extensions */ - caps = MPEG2_ACCEL_X86_MMX | MPEG2_ACCEL_X86_MMXEXT; - - cpuid (0x80000000, eax, ebx, ecx, edx); - if (eax < 0x80000001) /* no extended capabilities */ - return caps; - - cpuid (0x80000001, eax, ebx, ecx, edx); - - if (edx & 0x80000000) - caps |= MPEG2_ACCEL_X86_3DNOW; - - if (AMD && (edx & 0x00400000)) /* AMD MMX extensions */ - caps |= MPEG2_ACCEL_X86_MMXEXT; - - return caps; -} -#endif /* ARCH_X86 */ - -#if defined(ARCH_PPC) || defined(ARCH_SPARC) -#include <signal.h> -#include <setjmp.h> - -static sigjmp_buf jmpbuf; -static volatile sig_atomic_t canjump = 0; - -static RETSIGTYPE sigill_handler (int sig) -{ - if (!canjump) { - signal (sig, SIG_DFL); - raise (sig); - } - - canjump = 0; - siglongjmp (jmpbuf, 1); -} - -#ifdef ARCH_PPC -static inline uint32_t arch_accel (void) -{ - static RETSIGTYPE (* oldsig) (int); - - oldsig = signal (SIGILL, sigill_handler); - if (sigsetjmp (jmpbuf, 1)) { - signal (SIGILL, oldsig); - return 0; - } - - canjump = 1; - -#ifdef HAVE_ALTIVEC_H /* gnu */ -#define VAND(a,b,c) "vand " #a "," #b "," #c "\n\t" -#else /* apple */ -#define VAND(a,b,c) "vand v" #a ",v" #b ",v" #c "\n\t" -#endif - asm volatile ("mtspr 256, %0\n\t" - VAND (0, 0, 0) - : - : "r" (-1)); - - canjump = 0; - - signal (SIGILL, oldsig); - return MPEG2_ACCEL_PPC_ALTIVEC; -} -#endif /* ARCH_PPC */ - -#ifdef ARCH_SPARC -static inline uint32_t arch_accel (void) -{ - static RETSIGTYPE (* oldsig) (int); - - oldsig = signal (SIGILL, sigill_handler); - if (sigsetjmp (jmpbuf, 1)) { - signal (SIGILL, oldsig); - return 0; - } - - canjump = 1; - - /* pdist %f0, %f0, %f0 */ - __asm__ __volatile__(".word\t0x81b007c0"); - - canjump = 0; - - if (sigsetjmp (jmpbuf, 1)) { - signal (SIGILL, oldsig); - return MPEG2_ACCEL_SPARC_VIS; - } - - canjump = 1; - - /* edge8n %g0, %g0, %g0 */ - __asm__ __volatile__(".word\t0x81b00020"); - - canjump = 0; - - signal (SIGILL, oldsig); - return MPEG2_ACCEL_SPARC_VIS | MPEG2_ACCEL_SPARC_VIS2; -} -#endif /* ARCH_SPARC */ -#endif /* ARCH_PPC || ARCH_SPARC */ - -#ifdef ARCH_ALPHA -static inline uint32_t arch_accel (void) -{ - uint64_t no_mvi; - - asm volatile ("amask %1, %0" - : "=r" (no_mvi) - : "rI" (256)); /* AMASK_MVI */ - return no_mvi ? MPEG2_ACCEL_ALPHA : (MPEG2_ACCEL_ALPHA | - MPEG2_ACCEL_ALPHA_MVI); -} -#endif /* ARCH_ALPHA */ -#endif /* ACCEL_DETECT */ - -uint32_t mpeg2_detect_accel (void) -{ - uint32_t accel; - - accel = 0; -#ifdef ACCEL_DETECT -#if defined (ARCH_X86) || defined (ARCH_PPC) || defined (ARCH_ALPHA) || defined (ARCH_SPARC) - accel = arch_accel (); -#endif -#endif - return accel; -} |