[libdvdcss-devel] css: Replace some magic numbers by proper #defines

libdvdcss | branch: master | Diego Biurrun <[email protected]> | Sun Nov  9 18:14:15 2014 +0100| [7ae4a41e43888600dd66ddf58179e9d64f2ef870] | committer: Diego Biurrun

css: Replace some magic numbers by proper #defines

> http://git.videolan.org/gitweb.cgi/libdvdcss.git/?a=commit;h=7ae4a41e43888600dd66ddf58179e9d64f2ef870
---

 src/css.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/css.c b/src/css.c
index f5eac5e..d5585ce 100644
--- a/src/css.c
+++ b/src/css.c
@@ -1135,8 +1135,11 @@ static void DecryptTitleKey( dvd_key p_disc_key, dvd_key p_titlekey )
  * This function uses a big amount of memory to crack the disc key from the
  * disc key hash, if player keys are not available.
  *****************************************************************************/
+#define K1TABLESIZE  65536
 #define K1TABLEWIDTH 10
 
+#define BIGTABLESIZE 16777216
+
 /*
  * Simple function to test if a candidate key produces the given hash
  */
@@ -1175,7 +1178,7 @@ static int CrackDiscKey( dvdcss_t dvdcss, uint8_t *p_disc_key )
      */
 
     /* initialize lookup tables for k[1] */
-    K1table = calloc( 65536, K1TABLEWIDTH );
+    K1table = calloc( K1TABLESIZE, K1TABLEWIDTH );
     if( K1table == NULL )
     {
         return -1;
@@ -1206,7 +1209,7 @@ static int CrackDiscKey( dvdcss_t dvdcss, uint8_t *p_disc_key )
     }
 
     /* Initializing our really big table */
-    BigTable = calloc( 16777216, sizeof(*BigTable) );
+    BigTable = calloc( BIGTABLESIZE, sizeof(*BigTable) );
     if( BigTable == NULL )
     {
         free( K1table );
@@ -1217,7 +1220,7 @@ static int CrackDiscKey( dvdcss_t dvdcss, uint8_t *p_disc_key )
 
     print_debug( dvdcss, "initializing the big table" );
 
-    for( i = 0 ; i < 16777216 ; i++ )
+    for( i = 0 ; i < BIGTABLESIZE ; i++ )
     {
         tmp = (( i + i ) & 0x1fffff0 ) | 0x8 | ( i & 0x7 );
 
@@ -1238,7 +1241,7 @@ static int CrackDiscKey( dvdcss_t dvdcss, uint8_t *p_disc_key )
      */
     tmp5 = p_disc_key[0] ^ p_css_tab1[ p_disc_key[1] ];
 
-    for( nStepA = 0 ; nStepA < 65536 ; nStepA ++ )
+    for( nStepA = 0 ; nStepA < K1TABLESIZE ; nStepA ++ )
     {
         lfsr1a = 0x100 | ( nStepA >> 8 );
         lfsr1b = nStepA & 0xff;

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