From: Loren Merritt <pengvado@videolan.org>
Date: Wed, 8 Dec 2004 02:28:58 +0000 (+0000)
Subject: apply ip_factor and pb_factor in constant quantiser encodes.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=bc0a1e9b79d725680418be2bf7cf584a739ca47b;p=libx264

apply ip_factor and pb_factor in constant quantiser encodes.


git-svn-id: svn://svn.videolan.org/x264/trunk@65 df754926-b1dd-0310-bc7b-ec298dee348c
---

diff --git a/encoder/ratecontrol.c b/encoder/ratecontrol.c
index 89680a47..4baf165f 100644
--- a/encoder/ratecontrol.c
+++ b/encoder/ratecontrol.c
@@ -73,6 +73,7 @@ struct x264_ratecontrol_t
     int buffer_size;
     int rcbufrate;
     int init_qp;
+    int qp_constant[5];
 
     /* 1st pass stuff */
     int gop_qp;
@@ -176,6 +177,10 @@ int x264_ratecontrol_new( x264_t *h )
     rc->qpa = rc->qp;
     rc->qpm = rc->qp;
 
+    rc->qp_constant[SLICE_TYPE_P] = h->param.rc.i_qp_constant;
+    rc->qp_constant[SLICE_TYPE_I] = x264_clip3( (int)( qscale2qp( qp2qscale( h->param.rc.i_qp_constant ) / fabs( h->param.rc.f_ip_factor )) + 0.5 ), 0, 51 );
+    rc->qp_constant[SLICE_TYPE_B] = x264_clip3( (int)( qscale2qp( qp2qscale( h->param.rc.i_qp_constant ) * fabs( h->param.rc.f_pb_factor )) + 0.5 ), 0, 51 );
+
     /* Init 1pass CBR algo */
     if( h->param.rc.b_cbr ){
         rc->buffer_size = h->param.rc.i_rc_buffer_size * 1000;
@@ -360,6 +365,8 @@ void x264_ratecontrol_start( x264_t *h, int i_slice_type )
     }
     else if( !h->param.rc.b_cbr )
     {
+        rc->qpm = rc->qpa = rc->qp =
+            rc->qp_constant[ i_slice_type ];
         return;
     }