AC3 dynamic range compression changes. 0 now means a null DRC function. 1 remains the same (default DRC) and >1 still boosts soft sounds.

For the moment, presets and interfaces still assume a default of 1, but the notion is to move to having 0 as the default, in the hope it will be louder/clearer.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@2119 b64f7644-9d1e-0410-96f1-a4d463321fa5

2 files changed, 10 insertions, 3 deletions

diff --git a/libhb/deca52.c b/libhb/deca52.c
index f983a6528..db3b56fe5 100644
--- a/libhb/deca52.c
+++ b/libhb/deca52.c
@@ -273,9 +273,16 @@ static hb_buffer_t * Decode( hb_work_object_t * w )
     /* Feed liba52 */
     a52_frame( pv->state, pv->frame, &pv->flags_out, &pv->level, 0 );
 
-    if ( pv->dynamic_range_compression > 1.0 )
+    /* If a user specifies strong dynamic range compression (>1), adjust it.
+       If a user specifies default dynamic range compression (1), leave it alone.
+       If a user specifies no dynamic range compression (0), call a null function. */
+    if( pv->dynamic_range_compression > 1.0 )
     {
-        a52_dynrng( pv->state, dynrng_call, &pv->dynamic_range_compression);
+        a52_dynrng( pv->state, dynrng_call, &pv->dynamic_range_compression );
+    }
+    else if( !pv->dynamic_range_compression )
+    {
+        a52_dynrng( pv->state, NULL, NULL );
     }
 
     /* 6 blocks per frame, 256 samples per block, channelsused channels */
diff --git a/libhb/work.c b/libhb/work.c
index 4ea0f5ebd..d5d314c25 100644
--- a/libhb/work.c
+++ b/libhb/work.c
@@ -312,7 +312,7 @@ void hb_display_job_info( hb_job_t * job )
                 }
             }
 
-            if ( audio->config.out.dynamic_range_compression > 1 && (audio->config.out.codec != HB_ACODEC_AC3) && (audio->config.out.codec != HB_ACODEC_DCA))
+            if ( audio->config.out.dynamic_range_compression && (audio->config.out.codec != HB_ACODEC_AC3) && (audio->config.out.codec != HB_ACODEC_DCA))
             {
                 hb_log("   + dynamic range compression: %f", audio->config.out.dynamic_range_compression);
             }