* support FF_MM_FORCE

Originally committed as revision 1643 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago · 63f6082633
parent bec89a840f
commit 63f6082633
1 changed files with 6 additions and 0 deletions
--- a/libavcodec/i386/dsputil_mmx.c
+++ b/libavcodec/i386/dsputil_mmx.c
@ -1440,6 +1440,12 @@ static void ff_libmpeg2mmx2_idct_add(uint8_t *dest, int line_size, DCTELEM *bloc
 void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
 {
    mm_flags = mm_support();
+
+    if (avctx->dsp_mask && FF_MM_FORCE)
+	mm_flags |= (avctx->dsp_mask & 0xffff);
+    else
+        mm_flags &= (avctx->dsp_mask & 0xffff);
+
 #if 0
    fprintf(stderr, "libavcodec: CPU flags:");
    if (mm_flags & MM_MMX)