[FFmpeg-soc] [soc]: r988 - dirac/libavcodec/dirac.c

[marco]

Author: marco
Date: Sun Aug 19 00:21:12 2007
New Revision: 988

Log:
remove comment about how the DWT/IDWT works, this can be found in the specification in more detail

Modified:
   dirac/libavcodec/dirac.c

Modified: dirac/libavcodec/dirac.c
==============================================================================
--- dirac/libavcodec/dirac.c	(original)
+++ dirac/libavcodec/dirac.c	Sun Aug 19 00:21:12 2007
@@ -1677,16 +1677,6 @@ START_TIMER
 
     dirac_subband_idwt_interleave(s, data, synth, level);
 
-    /* LeGall(5,3)
-       First lifting step)
-       Even, predict, s=5, t_{-1}=-1, t_0=9, t_1=9, t_2=-1:
-         A[2*n]   -= (-A[2*n-1] + A[2*n+1] + 2) >> 2
-
-       Second lifting step)
-       Odd, update, s=1, t_0=1, t_1=1:
-         A[2*n+1] += (A[2*n] + A[2*n+2] + 1) >> 1
-    */
-
     /* Vertical synthesis: Lifting stage 1.  */
     synthline = synth;
     for (x = 0; x < synth_width; x++) {
@@ -1806,16 +1796,6 @@ START_TIMER
         return -1;
     }
 
-    /* LeGall(5,3)
-       First lifting step)
-       Even, predict, s=5, t_{-1}=-1, t_0=9, t_1=9, t_2=-1:
-         A[2*n]   -= (-A[2*n-1] + A[2*n+1] + 2) >> 2
-
-       Second lifting step)
-       Odd, update, s=1, t_0=1, t_1=1:
-         A[2*n+1] += (A[2*n] + A[2*n+2] + 1) >> 1
-    */
-
     /* Shift in one bit that is used for additional precision and copy
        the data to the buffer.  */
     synthline = synth;
@@ -1943,16 +1923,6 @@ START_TIMER
 
     dirac_subband_idwt_interleave(s, data, synth, level);
 
-    /* Deslauriers(9,5)
-       First lifting step)
-       Even, predict, s=5, t_{-1}=-1, t_0=9, t_1=9, t_2=-1:
-         A[2*n]   -= (-A[2*n-1] + A[2*n+1] + 2) >> 2
-
-       Second lifting step)
-       Odd, update, s=4, t_{-1}=-1, t_0=9, t_1=9, t_2=-1:
-         A[2*n+1] += (-A[2*n-2] + 9*A[2*n] + 9*A[2*n+2] + A[2*n+4] + 8) >> 4
-    */
-
     /* Vertical synthesis: Lifting stage 1.  */
     synthline = synth;
     for (x = 0; x < synth_width; x++)