- Bug fix on inter MCBPC table for inter+q.

- H.263/H.263+ decoder now knows GOB start codes.
- H.263/H.263+ decoder now returns the size of the stream on the first call.
- Added show_bits() functions to see the buffer without loosing the bits.
- TODO: H.263v1 UMV parsing is buggy.

Originally committed as revision 204 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 14 insertions, 0 deletions

diff --git a/libavcodec/common.h b/libavcodec/common.h
index aafcf5f03b..2b1debac89 100644
--- a/libavcodec/common.h
+++ b/libavcodec/common.h
@@ -196,6 +196,7 @@ void init_get_bits(GetBitContext *s,
                    UINT8 *buffer, int buffer_size);
 
 unsigned int get_bits_long(GetBitContext *s, int n);
+unsigned int show_bits_long(GetBitContext *s, int n);
 
 static inline unsigned int get_bits(GetBitContext *s, int n){
     if(s->bit_cnt>=n){
@@ -225,6 +226,19 @@ static inline unsigned int get_bits1(GetBitContext *s){
     return get_bits_long(s,1);
 }
 
+/* This function is identical to get_bits(), the only */
+/* diference is that it doesn't touch the buffer      */
+/* it is usefull to see the buffer.                   */
+static inline unsigned int show_bits(GetBitContext *s, int n)
+{
+    if(s->bit_cnt>=n) {
+        /* most common case here */
+        unsigned int val = s->bit_buf >> (32 - n);
+        return val;
+    }
+    return show_bits_long(s,n);
+}
+
 static inline void skip_bits(GetBitContext *s, int n){
     if(s->bit_cnt>=n){
         /* most common case here */