slow but accurate integer dct from IJG (should be ok with the LGPL as the old DCT is the fast integer DCT from IJG)

per context DCT selection

Originally committed as revision 878 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 9 insertions, 4 deletions

diff --git a/libavcodec/i386/mpegvideo_mmx.c b/libavcodec/i386/mpegvideo_mmx.c
index fceccf7bd2..10efc173f3 100644
--- a/libavcodec/i386/mpegvideo_mmx.c
+++ b/libavcodec/i386/mpegvideo_mmx.c
@@ -552,16 +552,21 @@ void unused_var_warning_killer(){
 void MPV_common_init_mmx(MpegEncContext *s)
 {
     if (mm_flags & MM_MMX) {
+        const int dct_algo= s->avctx->dct_algo;
         s->dct_unquantize_h263 = dct_unquantize_h263_mmx;
         s->dct_unquantize_mpeg1 = dct_unquantize_mpeg1_mmx;
         s->dct_unquantize_mpeg2 = dct_unquantize_mpeg2_mmx;
 
         draw_edges = draw_edges_mmx;
 
-        if(mm_flags & MM_MMXEXT){
-            dct_quantize= dct_quantize_MMX2;
-        } else {
-            dct_quantize= dct_quantize_MMX;
+        if(dct_algo==FF_DCT_AUTO || dct_algo==FF_DCT_MMX){
+            s->fdct = fdct_mmx;
+
+            if(mm_flags & MM_MMXEXT){
+                s->dct_quantize= dct_quantize_MMX2;
+            } else {
+                s->dct_quantize= dct_quantize_MMX;
+            }
         }
     }
 }