Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavcodec / x86 / mpegaudiodec_mmx.c

diff --git a/libavcodec/x86/mpegaudiodec_mmx.c b/libavcodec/x86/mpegaudiodec_mmx.c
index b85b8a55487e79378079bd543c43750082788c1c..939b441277675c0c8fc97000ad606ac12b4b90dc 100644 (file)
--- a/libavcodec/x86/mpegaudiodec_mmx.c
+++ b/libavcodec/x86/mpegaudiodec_mmx.c
@@ -106,7 +106,26 @@ static void apply_window_mp3(float *in, float *win, int *unused, float *out,
     float sum;
 
     /* copy to avoid wrap */
-    memcpy(in + 512, in, 32 * sizeof(*in));
+    __asm__ volatile(
+            "movaps    0(%0), %%xmm0   \n\t" \
+            "movaps   16(%0), %%xmm1   \n\t" \
+            "movaps   32(%0), %%xmm2   \n\t" \
+            "movaps   48(%0), %%xmm3   \n\t" \
+            "movaps   %%xmm0,   0(%1) \n\t" \
+            "movaps   %%xmm1,  16(%1) \n\t" \
+            "movaps   %%xmm2,  32(%1) \n\t" \
+            "movaps   %%xmm3,  48(%1) \n\t" \
+            "movaps   64(%0), %%xmm0   \n\t" \
+            "movaps   80(%0), %%xmm1   \n\t" \
+            "movaps   96(%0), %%xmm2   \n\t" \
+            "movaps  112(%0), %%xmm3   \n\t" \
+            "movaps   %%xmm0,  64(%1) \n\t" \
+            "movaps   %%xmm1,  80(%1) \n\t" \
+            "movaps   %%xmm2,  96(%1) \n\t" \
+            "movaps   %%xmm3, 112(%1) \n\t"
+            ::"r"(in), "r"(in+512)
+            :"memory"
+            );
 
     apply_window(in + 16, win     , win + 512, suma, sumc, 16);
     apply_window(in + 32, win + 48, win + 640, sumb, sumd, 16);