1 files changed, 129 insertions, 0 deletions

diff --git a/apps/plugins/mpegplayer/cpu_state.c b/apps/plugins/mpegplayer/cpu_state.c
new file mode 100644
index 0000000000..4406853626
--- /dev/null
+++ b/apps/plugins/mpegplayer/cpu_state.c
@@ -0,0 +1,129 @@
+/*
+ * cpu_state.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 ARCH_X86
+#include "mmx.h"
+#endif
+
+void (* mpeg2_cpu_state_save) (cpu_state_t * state) = NULL;
+void (* mpeg2_cpu_state_restore) (cpu_state_t * state) = NULL;
+
+#ifdef ARCH_X86
+static void state_restore_mmx (cpu_state_t * state)
+{
+    emms ();
+}
+#endif
+
+#ifdef ARCH_PPC
+#ifdef HAVE_ALTIVEC_H        /* gnu */
+#define LI(a,b) "li " #a "," #b "\n\t"
+#define STVX0(a,b,c) "stvx " #a ",0," #c "\n\t"
+#define STVX(a,b,c) "stvx " #a "," #b "," #c "\n\t"
+#define LVX0(a,b,c) "lvx " #a ",0," #c "\n\t"
+#define LVX(a,b,c) "lvx " #a "," #b "," #c "\n\t"
+#else                        /* apple */
+#define LI(a,b) "li r" #a "," #b "\n\t"
+#define STVX0(a,b,c) "stvx v" #a ",0,r" #c "\n\t"
+#define STVX(a,b,c) "stvx v" #a ",r" #b ",r" #c "\n\t"
+#define LVX0(a,b,c) "lvx v" #a ",0,r" #c "\n\t"
+#define LVX(a,b,c) "lvx v" #a ",r" #b ",r" #c "\n\t"
+#endif
+
+static void state_save_altivec (cpu_state_t * state)
+{
+    asm (LI (9, 16)
+         STVX0 (20, 0, 3)
+         LI (11, 32)
+         STVX (21, 9, 3)
+         LI (9, 48)
+         STVX (22, 11, 3)
+         LI (11, 64)
+         STVX (23, 9, 3)
+         LI (9, 80)
+         STVX (24, 11, 3)
+         LI (11, 96)
+         STVX (25, 9, 3)
+         LI (9, 112)
+         STVX (26, 11, 3)
+         LI (11, 128)
+         STVX (27, 9, 3)
+         LI (9, 144)
+         STVX (28, 11, 3)
+         LI (11, 160)
+         STVX (29, 9, 3)
+         LI (9, 176)
+         STVX (30, 11, 3)
+         STVX (31, 9, 3));
+}
+
+static void state_restore_altivec (cpu_state_t * state)
+{
+    asm (LI (9, 16)
+         LVX0 (20, 0, 3)
+         LI (11, 32)
+         LVX (21, 9, 3)
+         LI (9, 48)
+         LVX (22, 11, 3)
+         LI (11, 64)
+         LVX (23, 9, 3)
+         LI (9, 80)
+         LVX (24, 11, 3)
+         LI (11, 96)
+         LVX (25, 9, 3)
+         LI (9, 112)
+         LVX (26, 11, 3)
+         LI (11, 128)
+         LVX (27, 9, 3)
+         LI (9, 144)
+         LVX (28, 11, 3)
+         LI (11, 160)
+         LVX (29, 9, 3)
+         LI (9, 176)
+         LVX (30, 11, 3)
+         LVX (31, 9, 3));
+}
+#endif
+
+void mpeg2_cpu_state_init (uint32_t accel)
+{
+    (void)accel;
+#ifdef ARCH_X86
+    if (accel & MPEG2_ACCEL_X86_MMX) {
+        mpeg2_cpu_state_restore = state_restore_mmx;
+    }
+#endif
+#ifdef ARCH_PPC
+    if (accel & MPEG2_ACCEL_PPC_ALTIVEC) {
+        mpeg2_cpu_state_save = state_save_altivec;
+        mpeg2_cpu_state_restore = state_restore_altivec;
+    }
+#endif
+}