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authorMichael Niedermayer <michaelni@gmx.at>2010-01-07 03:40:41 +0000
committerMichael Niedermayer <michaelni@gmx.at>2010-01-07 03:40:41 +0000
commitb0704443f20d5a058634cb8e1ceb08721272b9f0 (patch)
tree23a4936296ec28d1016a05442a0b0b0d0d1e545f
parent046be9299f5ff2131356a6c15475f2cd8cde8536 (diff)
downloadffmpeg-b0704443f20d5a058634cb8e1ceb08721272b9f0.tar.gz
Document *VLC_BITS.
Originally committed as revision 21046 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r--libavcodec/h263.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/h263.c b/libavcodec/h263.c
index 67a7f18a5b..2dd6a15f05 100644
--- a/libavcodec/h263.c
+++ b/libavcodec/h263.c
@@ -45,6 +45,10 @@
//#undef NDEBUG
//#include <assert.h>
+// The defines below define the number of bits that are read at once for
+// reading vlc values. Changing these may improve speed and data cache needs
+// be aware though that decreasing them may need the number of stages that is
+// passed to get_vlc* to be increased.
#define INTRA_MCBPC_VLC_BITS 6
#define INTER_MCBPC_VLC_BITS 7
#define CBPY_VLC_BITS 6