avoid 2 additions (1 cpu cycle) per MB

[ffmpeg] / libavcodec / ratecontrol.c

diff --git a/libavcodec/ratecontrol.c b/libavcodec/ratecontrol.c
index 1ca9b68e673103ad22d3a4cc8fe6943ef1ed388b..961f83570acd674ccc272f44f19e62985e60e3ff 100644 (file)
--- a/libavcodec/ratecontrol.c
+++ b/libavcodec/ratecontrol.c
@@ -184,7 +184,7 @@ int ff_rate_control_init(MpegEncContext *s)
 
         //FIXME maybe move to end
         if((s->flags&CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID) {
-#ifdef CONFIG_XVID
+#ifdef CONFIG_LIBXVID
             return ff_xvid_rate_control_init(s);
 #else
             av_log(s->avctx, AV_LOG_ERROR, "XviD ratecontrol requires libavcodec compiled with XviD support\n");
@@ -243,7 +243,7 @@ int ff_rate_control_init(MpegEncContext *s)
                 bits= rce.i_tex_bits + rce.p_tex_bits;
 
                 q= get_qscale(s, &rce, rcc->pass1_wanted_bits/rcc->pass1_rc_eq_output_sum, i);
-                rcc->pass1_wanted_bits+= s->bit_rate/(1/av_q2d(s->avctx->time_base)); //FIXME missbehaves a little for variable fps
+                rcc->pass1_wanted_bits+= s->bit_rate/(1/av_q2d(s->avctx->time_base)); //FIXME misbehaves a little for variable fps
             }
         }
 
@@ -260,7 +260,7 @@ void ff_rate_control_uninit(MpegEncContext *s)
     ff_eval_free(rcc->rc_eq_eval);
     av_freep(&rcc->entry);
 
-#ifdef CONFIG_XVID
+#ifdef CONFIG_LIBXVID
     if((s->flags&CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
         ff_xvid_rate_control_uninit(s);
 #endif
@@ -371,6 +371,7 @@ static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_f
         q= -q*s->avctx->i_quant_factor + s->avctx->i_quant_offset;
     else if(pict_type==B_TYPE && s->avctx->b_quant_factor<0.0)
         q= -q*s->avctx->b_quant_factor + s->avctx->b_quant_offset;
+    if(q<1) q=1;
 
     return q;
 }
@@ -386,6 +387,7 @@ static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, doubl
         q= last_p_q    *FFABS(a->i_quant_factor) + a->i_quant_offset;
     else if(pict_type==B_TYPE && a->b_quant_factor>0.0)
         q= last_non_b_q*    a->b_quant_factor  + a->b_quant_offset;
+    if(q<1) q=1;
 
     /* last qscale / qdiff stuff */
     if(rcc->last_non_b_pict_type==pict_type || pict_type!=I_TYPE){
@@ -676,7 +678,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
     Picture * const pic= &s->current_picture;
     emms_c();
 
-#ifdef CONFIG_XVID
+#ifdef CONFIG_LIBXVID
     if((s->flags&CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
         return ff_xvid_rate_estimate_qscale(s, dry_run);
 #endif