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bitstream tracing support

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Originally committed as revision 1698 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-03-21 23:13:35 +00:00
parent 5e0daa0ac5
commit 643389567e
1 changed files with 40 additions and 0 deletions
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40
libavcodec/common.h
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@ -786,6 +786,46 @@ static always_inline int get_vlc2(GetBitContext *s, VLC_TYPE (*table)[2],
return code;
}
//#define TRACE
#ifdef TRACE
static inline void print_bin(int bits, int n){
int i;
for(i=n-1; i>=0; i--){
printf("%d", (bits>>i)&1);
}
for(i=n; i<24; i++)
printf(" ");
}
static inline int get_bits_trace(GetBitContext *s, int n, char *file, char *func, int line){
int r= get_bits(s, n);
print_bin(r, n);
printf("%5d %2d %3d bit @%5d in %s %s:%d\n", r, n, r, get_bits_count(s)-n, file, func, line);
return r;
}
static inline int get_vlc_trace(GetBitContext *s, VLC_TYPE (*table)[2], int bits, int max_depth, char *file, char *func, int line){
int show= show_bits(s, 24);
int pos= get_bits_count(s);
int r= get_vlc2(s, table, bits, max_depth);
int len= get_bits_count(s) - pos;
int bits2= show>>(24-len);
print_bin(bits2, len);
printf("%5d %2d %3d vlc @%5d in %s %s:%d\n", bits2, len, r, pos, file, func, line);
return r;
}
#define get_bits(s, n) get_bits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_bits1(s) get_bits_trace(s, 1, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_vlc(s, vlc) get_vlc_trace(s, vlc->table, vlc->bits, 3, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_vlc2(s, tab, bits, max) get_vlc_trace(s, tab, bits, max, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#endif
/* define it to include statistics code (useful only for optimizing
codec efficiency */