Upstream version 9.38.198.0

[platform/framework/web/crosswalk.git] / src / third_party / ffmpeg / libavutil / cpu.c

diff --git a/src/third_party/ffmpeg/libavutil/cpu.c b/src/third_party/ffmpeg/libavutil/cpu.c
index c4517ba..2d40211 100644 (file)
--- a/src/third_party/ffmpeg/libavutil/cpu.c
+++ b/src/third_party/ffmpeg/libavutil/cpu.c
@@ -40,13 +40,33 @@
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #endif
-#if HAVE_SYSCONF
+#if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 
 static int flags, checked;
 
 void av_force_cpu_flags(int arg){
+    if (   (arg & ( AV_CPU_FLAG_3DNOW    |
+                    AV_CPU_FLAG_3DNOWEXT |
+                    AV_CPU_FLAG_SSE      |
+                    AV_CPU_FLAG_SSE2     |
+                    AV_CPU_FLAG_SSE2SLOW |
+                    AV_CPU_FLAG_SSE3     |
+                    AV_CPU_FLAG_SSE3SLOW |
+                    AV_CPU_FLAG_SSSE3    |
+                    AV_CPU_FLAG_SSE4     |
+                    AV_CPU_FLAG_SSE42    |
+                    AV_CPU_FLAG_AVX      |
+                    AV_CPU_FLAG_XOP      |
+                    AV_CPU_FLAG_FMA3     |
+                    AV_CPU_FLAG_FMA4     |
+                    AV_CPU_FLAG_AVX2     ))
+        && !(arg & AV_CPU_FLAG_MMX)) {
+        av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n");
+        arg |= AV_CPU_FLAG_MMX;
+    }
+
     flags   = arg;
     checked = arg != -1;
 }