ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavutil/cpu.c

+/*
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "cpu.h"
+#include "config.h"
+
+int av_get_cpu_flags(void)
+{
+    static int flags, checked;
+
+    if (checked)
+        return flags;
+
+    if (ARCH_ARM) flags = ff_get_cpu_flags_arm();
+    if (ARCH_PPC) flags = ff_get_cpu_flags_ppc();
+    if (ARCH_X86) flags = ff_get_cpu_flags_x86();
+
+    checked = 1;
+    return flags;
+}
+
+#ifdef TEST
+
+#undef printf
+
+int main(void)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    printf("cpu_flags = 0x%08X\n", cpu_flags);
+    printf("cpu_flags = %s%s%s%s%s%s%s%s%s%s%s%s\n",
+#if   ARCH_ARM
+           cpu_flags & AV_CPU_FLAG_IWMMXT   ? "IWMMXT "     : "",
+#elif ARCH_PPC
+           cpu_flags & AV_CPU_FLAG_ALTIVEC  ? "ALTIVEC "    : "",
+#elif ARCH_X86
+           cpu_flags & AV_CPU_FLAG_MMX      ? "MMX "        : "",
+           cpu_flags & AV_CPU_FLAG_MMX2     ? "MMX2 "       : "",
+           cpu_flags & AV_CPU_FLAG_SSE      ? "SSE "        : "",
+           cpu_flags & AV_CPU_FLAG_SSE2     ? "SSE2 "       : "",
+           cpu_flags & AV_CPU_FLAG_SSE2SLOW ? "SSE2(slow) " : "",
+           cpu_flags & AV_CPU_FLAG_SSE3     ? "SSE3 "       : "",
+           cpu_flags & AV_CPU_FLAG_SSE3SLOW ? "SSE3(slow) " : "",
+           cpu_flags & AV_CPU_FLAG_SSSE3    ? "SSSE3 "      : "",
+           cpu_flags & AV_CPU_FLAG_SSE4     ? "SSE4.1 "     : "",
+           cpu_flags & AV_CPU_FLAG_SSE42    ? "SSE4.2 "     : "",
+           cpu_flags & AV_CPU_FLAG_3DNOW    ? "3DNow "      : "",
+           cpu_flags & AV_CPU_FLAG_3DNOWEXT ? "3DNowExt "   : "");
+#endif
+    return 0;
+}
+
+#endif