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Add --gst-disable-cpu-opt argument.

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Original commit message from CVS:
Add --gst-disable-cpu-opt argument.
This commit is contained in:
Colin Walters 2003-05-31 02:04:59 +00:00
parent ed086d5f79
commit 28fbd2e87b
3 changed files with 49 additions and 38 deletions
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9
gst/gst.c
View file

@ -49,6 +49,8 @@ static gboolean _gst_registry_fixed = FALSE;
static gboolean _gst_use_threads = TRUE;
static gboolean _gst_enable_cpu_opt = TRUE;
static gboolean gst_initialized = FALSE;
/* this will be set in popt callbacks when a problem has been encountered */
static gboolean _gst_initialization_failure = FALSE;
@ -88,6 +90,7 @@ enum {
ARG_DEBUG_MASK,
ARG_MASK,
ARG_MASK_HELP,
ARG_DISABLE_CPU_OPT,
ARG_PLUGIN_SPEW,
ARG_PLUGIN_PATH,
ARG_PLUGIN_LOAD,
@ -111,6 +114,7 @@ static const struct poptOption gstreamer_options[] = {
{"gst-debug-mask", NUL, POPT_ARG_INT|POPT_ARGFLAG_STRIP, NULL, ARG_DEBUG_MASK, "debugging bitmask", "MASK"},
{"gst-mask", NUL, POPT_ARG_INT|POPT_ARGFLAG_STRIP, NULL, ARG_MASK, "bitmask for both info and debugging", "MASK"},
{"gst-mask-help", NUL, POPT_ARG_NONE|POPT_ARGFLAG_STRIP, NULL, ARG_MASK_HELP, "how to set the level of diagnostic output (-mask values)", NULL},
{"gst-disable-cpu-opt",NUL, POPT_ARG_NONE|POPT_ARGFLAG_STRIP, NULL, ARG_DISABLE_CPU_OPT,"Disable accelerated CPU instructions", NULL},
{"gst-plugin-spew", NUL, POPT_ARG_NONE|POPT_ARGFLAG_STRIP, NULL, ARG_PLUGIN_SPEW, "enable verbose plugin loading diagnostics", NULL},
{"gst-plugin-path", NUL, POPT_ARG_STRING|POPT_ARGFLAG_STRIP, NULL, ARG_PLUGIN_PATH, "'" G_SEARCHPATH_SEPARATOR_S "'--separated path list for loading plugins", "PATHS"},
{"gst-plugin-load", NUL, POPT_ARG_STRING|POPT_ARGFLAG_STRIP, NULL, ARG_PLUGIN_LOAD, "comma-separated list of plugins to preload in addition to the list stored in env variable GST_PLUGIN_PATH", "PLUGINS"},
@ -483,7 +487,7 @@ init_post (void)
/* register core plugins */
_gst_plugin_register_static (&plugin_desc);
_gst_cpu_initialize ();
_gst_cpu_initialize (_gst_enable_cpu_opt);
_gst_props_initialize ();
_gst_caps_initialize ();
_gst_plugin_initialize ();
@ -598,6 +602,9 @@ init_popt_callback (poptContext context, enum poptCallbackReason reason,
case ARG_MASK_HELP:
gst_mask_help ();
exit (0);
case ARG_DISABLE_CPU_OPT:
_gst_enable_cpu_opt = FALSE;
break;
case ARG_PLUGIN_SPEW:
break;
case ARG_PLUGIN_PATH:

76
gst/gstcpu.c
View file

@ -1,6 +1,7 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2003 Colin Walters <walters@verbum.org>
*
* gstcpu.c: CPU detection and architecture-specific routines
*
@ -25,78 +26,81 @@
#include "gst_private.h"
#include "gstcpu.h"
static guint32 _gst_cpu_flags;
static guint32 _gst_cpu_flags = 0;
#ifdef HAVE_CPU_I386
#define _gst_cpu_initialize_arch _gst_cpu_initialize_i386
void gst_cpuid_i386 (int, unsigned long *, unsigned long *, unsigned long *, unsigned long *);
#define gst_cpuid gst_cpuid_i386
#else
#define gst_cpuid(o,a,b,c,d) (void)(a);(void)(b);(void)(c);
#define _gst_cpu_initialize_arch _gst_cpu_initialize_none
#endif
static gchar *
stringcat (gchar * a, gchar * b)
{
gchar *c;
if (a) {
c = g_strconcat (a, b, NULL);
g_free (a);
}
else {
c = g_strdup (b);
}
return c;
}
gboolean _gst_cpu_initialize_i386 (gulong *flags, GString *featurelist);
void
_gst_cpu_initialize (void)
_gst_cpu_initialize (gboolean opt)
{
gchar *featurelist = NULL;
gboolean AMD;
GString *featurelist = g_string_new ("");
gulong flags = 0;
if (opt) {
if (!_gst_cpu_initialize_arch (&flags, featurelist))
g_string_append (featurelist, "NONE");
} else
g_string_append (featurelist, "(DISABLED)");
GST_INFO (GST_CAT_GST_INIT, "CPU features: (%08lx) %s", flags, featurelist->str);
g_string_free (featurelist, TRUE);
}
gboolean
_gst_cpu_initialize_none (gulong *flags, GString *featurelist)
{
return FALSE;
}
gboolean
_gst_cpu_initialize_i386 (gulong *flags, GString *featurelist)
{
gboolean AMD;
gulong eax = 0, ebx = 0, ecx = 0, edx = 0;
gst_cpuid (0, &eax, &ebx, &ecx, &edx);
gst_cpuid_i386 (0, &eax, &ebx, &ecx, &edx);
AMD = (ebx == 0x68747541) && (ecx == 0x444d4163) && (edx == 0x69746e65);
gst_cpuid (1, &eax, &ebx, &ecx, &edx);
gst_cpuid_i386 (1, &eax, &ebx, &ecx, &edx);
if (edx & (1 << 23)) {
_gst_cpu_flags |= GST_CPU_FLAG_MMX;
featurelist = stringcat (featurelist, "MMX ");
g_string_append (featurelist, "MMX ");
if (edx & (1 << 25)) {
_gst_cpu_flags |= GST_CPU_FLAG_SSE;
_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
featurelist = stringcat (featurelist, "SSE ");
g_string_append (featurelist, "SSE ");
}
gst_cpuid (0x80000000, &eax, &ebx, &ecx, &edx);
gst_cpuid_i386 (0x80000000, &eax, &ebx, &ecx, &edx);
if (eax >= 0x80000001) {
gst_cpuid (0x80000001, &eax, &ebx, &ecx, &edx);
gst_cpuid_i386 (0x80000001, &eax, &ebx, &ecx, &edx);
if (edx & (1 << 31)) {
_gst_cpu_flags |= GST_CPU_FLAG_3DNOW;
featurelist = stringcat (featurelist, "3DNOW ");
g_string_append (featurelist, "3DNOW ");
}
if (AMD && (edx & (1 << 22))) {
_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
featurelist = stringcat (featurelist, "MMXEXT ");
g_string_append (featurelist, "MMXEXT ");
}
}
}
if (!_gst_cpu_flags) {
featurelist = stringcat (featurelist, "NONE");
}
GST_INFO (GST_CAT_GST_INIT, "CPU features: (%08lx) %s", edx, featurelist);
g_free (featurelist);
*flags = eax;
if (_gst_cpu_flags)
return TRUE;
return FALSE;
}
GstCPUFlags

2
gst/gstcpu.h
View file

@ -31,7 +31,7 @@ typedef enum {
GST_CPU_FLAG_3DNOW = (1<<3)
} GstCPUFlags;
void _gst_cpu_initialize (void);
void _gst_cpu_initialize (gboolean useopt);
GstCPUFlags gst_cpu_get_flags (void);