ratecontrol: fix get_fps() argument
[ffmpeg.git] / libavcodec / ratecontrol.c
index 6cd5a4f..bc399b4 100644 (file)
  */
 
 /**
  */
 
 /**
- * @file ratecontrol.c
+ * @file
  * Rate control for video encoders.
  */
 
  * Rate control for video encoders.
  */
 
+#include "libavutil/intmath.h"
 #include "avcodec.h"
 #include "dsputil.h"
 #include "ratecontrol.h"
 #include "mpegvideo.h"
 #include "avcodec.h"
 #include "dsputil.h"
 #include "ratecontrol.h"
 #include "mpegvideo.h"
-#include "eval.h"
+#include "libavutil/eval.h"
 
 #undef NDEBUG // Always check asserts, the speed effect is far too small to disable them.
 #include <assert.h>
 
 #undef NDEBUG // Always check asserts, the speed effect is far too small to disable them.
 #include <assert.h>
@@ -43,9 +44,13 @@ static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_f
 
 void ff_write_pass1_stats(MpegEncContext *s){
     snprintf(s->avctx->stats_out, 256, "in:%d out:%d type:%d q:%d itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d skipcount:%d hbits:%d;\n",
 
 void ff_write_pass1_stats(MpegEncContext *s){
     snprintf(s->avctx->stats_out, 256, "in:%d out:%d type:%d q:%d itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d skipcount:%d hbits:%d;\n",
-            s->current_picture_ptr->display_picture_number, s->current_picture_ptr->coded_picture_number, s->pict_type,
-            s->current_picture.quality, s->i_tex_bits, s->p_tex_bits, s->mv_bits, s->misc_bits,
-            s->f_code, s->b_code, s->current_picture.mc_mb_var_sum, s->current_picture.mb_var_sum, s->i_count, s->skip_count, s->header_bits);
+             s->current_picture_ptr->f.display_picture_number, s->current_picture_ptr->f.coded_picture_number, s->pict_type,
+             s->current_picture.f.quality, s->i_tex_bits, s->p_tex_bits, s->mv_bits, s->misc_bits,
+             s->f_code, s->b_code, s->current_picture.mc_mb_var_sum, s->current_picture.mb_var_sum, s->i_count, s->skip_count, s->header_bits);
+}
+
+static double get_fps(AVCodecContext *avctx){
+    return 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1);
 }
 
 static inline double qp2bits(RateControlEntry *rce, double qp){
 }
 
 static inline double qp2bits(RateControlEntry *rce, double qp){
@@ -65,9 +70,8 @@ static inline double bits2qp(RateControlEntry *rce, double bits){
 int ff_rate_control_init(MpegEncContext *s)
 {
     RateControlContext *rcc= &s->rc_context;
 int ff_rate_control_init(MpegEncContext *s)
 {
     RateControlContext *rcc= &s->rc_context;
-    int i;
-    char *error = NULL;
-    static const char *const_names[]={
+    int i, res;
+    static const char * const const_names[]={
         "PI",
         "E",
         "iTex",
         "PI",
         "E",
         "iTex",
@@ -94,22 +98,29 @@ int ff_rate_control_init(MpegEncContext *s)
         "avgTex",
         NULL
     };
         "avgTex",
         NULL
     };
-    static double (*func1[])(void *, double)={
+    static double (* const func1[])(void *, double)={
         (void *)bits2qp,
         (void *)qp2bits,
         NULL
     };
         (void *)bits2qp,
         (void *)qp2bits,
         NULL
     };
-    static const char *func1_names[]={
+    static const char * const func1_names[]={
         "bits2qp",
         "qp2bits",
         NULL
     };
     emms_c();
 
         "bits2qp",
         "qp2bits",
         NULL
     };
     emms_c();
 
-    rcc->rc_eq_eval = ff_parse(s->avctx->rc_eq, const_names, func1, func1_names, NULL, NULL, &error);
-    if (!rcc->rc_eq_eval) {
-        av_log(s->avctx, AV_LOG_ERROR, "Error parsing rc_eq \"%s\": %s\n", s->avctx->rc_eq, error? error : "");
-        return -1;
+    if (!s->avctx->rc_max_available_vbv_use && s->avctx->rc_buffer_size) {
+        if (s->avctx->rc_max_rate) {
+            s->avctx->rc_max_available_vbv_use = av_clipf(s->avctx->rc_max_rate/(s->avctx->rc_buffer_size*get_fps(s->avctx)), 1.0/0.3, 1.0);
+        } else
+            s->avctx->rc_max_available_vbv_use = 1.0;
+    }
+
+    res = av_expr_parse(&rcc->rc_eq_eval, s->avctx->rc_eq ? s->avctx->rc_eq : "tex^qComp", const_names, func1_names, func1, NULL, NULL, 0, s->avctx);
+    if (res < 0) {
+        av_log(s->avctx, AV_LOG_ERROR, "Error parsing rc_eq \"%s\"\n", s->avctx->rc_eq);
+        return res;
     }
 
     for(i=0; i<5; i++){
     }
 
     for(i=0; i<5; i++){
@@ -121,10 +132,12 @@ int ff_rate_control_init(MpegEncContext *s)
         rcc->p_cplx_sum [i]=
         rcc->mv_bits_sum[i]=
         rcc->qscale_sum [i]=
         rcc->p_cplx_sum [i]=
         rcc->mv_bits_sum[i]=
         rcc->qscale_sum [i]=
-        rcc->frame_count[i]= 1; // 1 is better cuz of 1/0 and such
+        rcc->frame_count[i]= 1; // 1 is better because of 1/0 and such
         rcc->last_qscale_for[i]=FF_QP2LAMBDA * 5;
     }
     rcc->buffer_index= s->avctx->rc_initial_buffer_occupancy;
         rcc->last_qscale_for[i]=FF_QP2LAMBDA * 5;
     }
     rcc->buffer_index= s->avctx->rc_initial_buffer_occupancy;
+    if (!rcc->buffer_index)
+        rcc->buffer_index = s->avctx->rc_buffer_size * 3 / 4;
 
     if(s->flags&CODEC_FLAG_PASS2){
         int i;
 
     if(s->flags&CODEC_FLAG_PASS2){
         int i;
@@ -138,13 +151,13 @@ int ff_rate_control_init(MpegEncContext *s)
         i+= s->max_b_frames;
         if(i<=0 || i>=INT_MAX / sizeof(RateControlEntry))
             return -1;
         i+= s->max_b_frames;
         if(i<=0 || i>=INT_MAX / sizeof(RateControlEntry))
             return -1;
-        rcc->entry = (RateControlEntry*)av_mallocz(i*sizeof(RateControlEntry));
+        rcc->entry = av_mallocz(i*sizeof(RateControlEntry));
         rcc->num_entries= i;
 
         /* init all to skipped p frames (with b frames we might have a not encoded frame at the end FIXME) */
         for(i=0; i<rcc->num_entries; i++){
             RateControlEntry *rce= &rcc->entry[i];
         rcc->num_entries= i;
 
         /* init all to skipped p frames (with b frames we might have a not encoded frame at the end FIXME) */
         for(i=0; i<rcc->num_entries; i++){
             RateControlEntry *rce= &rcc->entry[i];
-            rce->pict_type= rce->new_pict_type=P_TYPE;
+            rce->pict_type= rce->new_pict_type=AV_PICTURE_TYPE_P;
             rce->qscale= rce->new_qscale=FF_QP2LAMBDA * 2;
             rce->misc_bits= s->mb_num + 10;
             rce->mb_var_sum= s->mb_num*100;
             rce->qscale= rce->new_qscale=FF_QP2LAMBDA * 2;
             rce->misc_bits= s->mb_num + 10;
             rce->mb_var_sum= s->mb_num*100;
@@ -184,10 +197,10 @@ 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) {
 
         //FIXME maybe move to end
         if((s->flags&CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID) {
-#ifdef CONFIG_LIBXVID
+#if CONFIG_LIBXVID
             return ff_xvid_rate_control_init(s);
 #else
             return ff_xvid_rate_control_init(s);
 #else
-            av_log(s->avctx, AV_LOG_ERROR, "XviD ratecontrol requires libavcodec compiled with XviD support\n");
+            av_log(s->avctx, AV_LOG_ERROR, "Xvid ratecontrol requires libavcodec compiled with Xvid support.\n");
             return -1;
 #endif
         }
             return -1;
 #endif
         }
@@ -210,11 +223,10 @@ int ff_rate_control_init(MpegEncContext *s)
             for(i=0; i<60*30; i++){
                 double bits= s->avctx->rc_initial_cplx * (i/10000.0 + 1.0)*s->mb_num;
                 RateControlEntry rce;
             for(i=0; i<60*30; i++){
                 double bits= s->avctx->rc_initial_cplx * (i/10000.0 + 1.0)*s->mb_num;
                 RateControlEntry rce;
-                double q;
 
 
-                if     (i%((s->gop_size+3)/4)==0) rce.pict_type= I_TYPE;
-                else if(i%(s->max_b_frames+1))    rce.pict_type= B_TYPE;
-                else                              rce.pict_type= P_TYPE;
+                if     (i%((s->gop_size+3)/4)==0) rce.pict_type= AV_PICTURE_TYPE_I;
+                else if(i%(s->max_b_frames+1))    rce.pict_type= AV_PICTURE_TYPE_B;
+                else                              rce.pict_type= AV_PICTURE_TYPE_P;
 
                 rce.new_pict_type= rce.pict_type;
                 rce.mc_mb_var_sum= bits*s->mb_num/100000;
 
                 rce.new_pict_type= rce.pict_type;
                 rce.mc_mb_var_sum= bits*s->mb_num/100000;
@@ -224,7 +236,7 @@ int ff_rate_control_init(MpegEncContext *s)
                 rce.b_code   = 1;
                 rce.misc_bits= 1;
 
                 rce.b_code   = 1;
                 rce.misc_bits= 1;
 
-                if(s->pict_type== I_TYPE){
+                if(s->pict_type== AV_PICTURE_TYPE_I){
                     rce.i_count   = s->mb_num;
                     rce.i_tex_bits= bits;
                     rce.p_tex_bits= 0;
                     rce.i_count   = s->mb_num;
                     rce.i_tex_bits= bits;
                     rce.p_tex_bits= 0;
@@ -240,10 +252,8 @@ int ff_rate_control_init(MpegEncContext *s)
                 rcc->mv_bits_sum[rce.pict_type] += rce.mv_bits;
                 rcc->frame_count[rce.pict_type] ++;
 
                 rcc->mv_bits_sum[rce.pict_type] += rce.mv_bits;
                 rcc->frame_count[rce.pict_type] ++;
 
-                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 misbehaves a little for variable fps
+                get_qscale(s, &rce, rcc->pass1_wanted_bits/rcc->pass1_rc_eq_output_sum, i);
+                rcc->pass1_wanted_bits+= s->bit_rate/get_fps(s->avctx); //FIXME misbehaves a little for variable fps
             }
         }
 
             }
         }
 
@@ -257,10 +267,10 @@ void ff_rate_control_uninit(MpegEncContext *s)
     RateControlContext *rcc= &s->rc_context;
     emms_c();
 
     RateControlContext *rcc= &s->rc_context;
     emms_c();
 
-    ff_eval_free(rcc->rc_eq_eval);
+    av_expr_free(rcc->rc_eq_eval);
     av_freep(&rcc->entry);
 
     av_freep(&rcc->entry);
 
-#ifdef CONFIG_LIBXVID
+#if CONFIG_LIBXVID
     if((s->flags&CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
         ff_xvid_rate_control_uninit(s);
 #endif
     if((s->flags&CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
         ff_xvid_rate_control_uninit(s);
 #endif
@@ -268,7 +278,7 @@ void ff_rate_control_uninit(MpegEncContext *s)
 
 int ff_vbv_update(MpegEncContext *s, int frame_size){
     RateControlContext *rcc= &s->rc_context;
 
 int ff_vbv_update(MpegEncContext *s, int frame_size){
     RateControlContext *rcc= &s->rc_context;
-    const double fps= 1/av_q2d(s->avctx->time_base);
+    const double fps= get_fps(s->avctx);
     const int buffer_size= s->avctx->rc_buffer_size;
     const double min_rate= s->avctx->rc_min_rate/fps;
     const double max_rate= s->avctx->rc_max_rate/fps;
     const int buffer_size= s->avctx->rc_buffer_size;
     const double min_rate= s->avctx->rc_min_rate/fps;
     const double max_rate= s->avctx->rc_max_rate/fps;
@@ -289,7 +299,7 @@ int ff_vbv_update(MpegEncContext *s, int frame_size){
         if(rcc->buffer_index > buffer_size){
             int stuffing= ceil((rcc->buffer_index - buffer_size)/8);
 
         if(rcc->buffer_index > buffer_size){
             int stuffing= ceil((rcc->buffer_index - buffer_size)/8);
 
-            if(stuffing < 4 && s->codec_id == CODEC_ID_MPEG4)
+            if(stuffing < 4 && s->codec_id == AV_CODEC_ID_MPEG4)
                 stuffing=4;
             rcc->buffer_index -= 8*stuffing;
 
                 stuffing=4;
             rcc->buffer_index -= 8*stuffing;
 
@@ -303,7 +313,7 @@ int ff_vbv_update(MpegEncContext *s, int frame_size){
 }
 
 /**
 }
 
 /**
- * modifies the bitrate curve from pass1 for one frame
+ * Modify the bitrate curve from pass1 for one frame.
  */
 static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num){
     RateControlContext *rcc= &s->rc_context;
  */
 static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num){
     RateControlContext *rcc= &s->rc_context;
@@ -320,28 +330,28 @@ static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_f
         rce->p_tex_bits*rce->qscale,
         (rce->i_tex_bits + rce->p_tex_bits)*(double)rce->qscale,
         rce->mv_bits/mb_num,
         rce->p_tex_bits*rce->qscale,
         (rce->i_tex_bits + rce->p_tex_bits)*(double)rce->qscale,
         rce->mv_bits/mb_num,
-        rce->pict_type == B_TYPE ? (rce->f_code + rce->b_code)*0.5 : rce->f_code,
+        rce->pict_type == AV_PICTURE_TYPE_B ? (rce->f_code + rce->b_code)*0.5 : rce->f_code,
         rce->i_count/mb_num,
         rce->mc_mb_var_sum/mb_num,
         rce->mb_var_sum/mb_num,
         rce->i_count/mb_num,
         rce->mc_mb_var_sum/mb_num,
         rce->mb_var_sum/mb_num,
-        rce->pict_type == I_TYPE,
-        rce->pict_type == P_TYPE,
-        rce->pict_type == B_TYPE,
+        rce->pict_type == AV_PICTURE_TYPE_I,
+        rce->pict_type == AV_PICTURE_TYPE_P,
+        rce->pict_type == AV_PICTURE_TYPE_B,
         rcc->qscale_sum[pict_type] / (double)rcc->frame_count[pict_type],
         a->qcompress,
         rcc->qscale_sum[pict_type] / (double)rcc->frame_count[pict_type],
         a->qcompress,
-/*        rcc->last_qscale_for[I_TYPE],
-        rcc->last_qscale_for[P_TYPE],
-        rcc->last_qscale_for[B_TYPE],
+/*        rcc->last_qscale_for[AV_PICTURE_TYPE_I],
+        rcc->last_qscale_for[AV_PICTURE_TYPE_P],
+        rcc->last_qscale_for[AV_PICTURE_TYPE_B],
         rcc->next_non_b_qscale,*/
         rcc->next_non_b_qscale,*/
-        rcc->i_cplx_sum[I_TYPE] / (double)rcc->frame_count[I_TYPE],
-        rcc->i_cplx_sum[P_TYPE] / (double)rcc->frame_count[P_TYPE],
-        rcc->p_cplx_sum[P_TYPE] / (double)rcc->frame_count[P_TYPE],
-        rcc->p_cplx_sum[B_TYPE] / (double)rcc->frame_count[B_TYPE],
+        rcc->i_cplx_sum[AV_PICTURE_TYPE_I] / (double)rcc->frame_count[AV_PICTURE_TYPE_I],
+        rcc->i_cplx_sum[AV_PICTURE_TYPE_P] / (double)rcc->frame_count[AV_PICTURE_TYPE_P],
+        rcc->p_cplx_sum[AV_PICTURE_TYPE_P] / (double)rcc->frame_count[AV_PICTURE_TYPE_P],
+        rcc->p_cplx_sum[AV_PICTURE_TYPE_B] / (double)rcc->frame_count[AV_PICTURE_TYPE_B],
         (rcc->i_cplx_sum[pict_type] + rcc->p_cplx_sum[pict_type]) / (double)rcc->frame_count[pict_type],
         0
     };
 
         (rcc->i_cplx_sum[pict_type] + rcc->p_cplx_sum[pict_type]) / (double)rcc->frame_count[pict_type],
         0
     };
 
-    bits= ff_parse_eval(rcc->rc_eq_eval, const_values, rce);
+    bits = av_expr_eval(rcc->rc_eq_eval, const_values, rce);
     if (isnan(bits)) {
         av_log(s->avctx, AV_LOG_ERROR, "Error evaluating rc_eq \"%s\"\n", s->avctx->rc_eq);
         return -1;
     if (isnan(bits)) {
         av_log(s->avctx, AV_LOG_ERROR, "Error evaluating rc_eq \"%s\"\n", s->avctx->rc_eq);
         return -1;
@@ -367,9 +377,9 @@ static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_f
     q= bits2qp(rce, bits);
 
     /* I/B difference */
     q= bits2qp(rce, bits);
 
     /* I/B difference */
-    if     (pict_type==I_TYPE && s->avctx->i_quant_factor<0.0)
+    if     (pict_type==AV_PICTURE_TYPE_I && s->avctx->i_quant_factor<0.0)
         q= -q*s->avctx->i_quant_factor + s->avctx->i_quant_offset;
         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)
+    else if(pict_type==AV_PICTURE_TYPE_B && s->avctx->b_quant_factor<0.0)
         q= -q*s->avctx->b_quant_factor + s->avctx->b_quant_offset;
     if(q<1) q=1;
 
         q= -q*s->avctx->b_quant_factor + s->avctx->b_quant_offset;
     if(q<1) q=1;
 
@@ -380,17 +390,17 @@ static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, doubl
     RateControlContext *rcc= &s->rc_context;
     AVCodecContext *a= s->avctx;
     const int pict_type= rce->new_pict_type;
     RateControlContext *rcc= &s->rc_context;
     AVCodecContext *a= s->avctx;
     const int pict_type= rce->new_pict_type;
-    const double last_p_q    = rcc->last_qscale_for[P_TYPE];
+    const double last_p_q    = rcc->last_qscale_for[AV_PICTURE_TYPE_P];
     const double last_non_b_q= rcc->last_qscale_for[rcc->last_non_b_pict_type];
 
     const double last_non_b_q= rcc->last_qscale_for[rcc->last_non_b_pict_type];
 
-    if     (pict_type==I_TYPE && (a->i_quant_factor>0.0 || rcc->last_non_b_pict_type==P_TYPE))
+    if     (pict_type==AV_PICTURE_TYPE_I && (a->i_quant_factor>0.0 || rcc->last_non_b_pict_type==AV_PICTURE_TYPE_P))
         q= last_p_q    *FFABS(a->i_quant_factor) + a->i_quant_offset;
         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)
+    else if(pict_type==AV_PICTURE_TYPE_B && 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 */
         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){
+    if(rcc->last_non_b_pict_type==pict_type || pict_type!=AV_PICTURE_TYPE_I){
         double last_q= rcc->last_qscale_for[pict_type];
         const int maxdiff= FF_QP2LAMBDA * a->max_qdiff;
 
         double last_q= rcc->last_qscale_for[pict_type];
         const int maxdiff= FF_QP2LAMBDA * a->max_qdiff;
 
@@ -400,14 +410,14 @@ static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, doubl
 
     rcc->last_qscale_for[pict_type]= q; //Note we cannot do that after blurring
 
 
     rcc->last_qscale_for[pict_type]= q; //Note we cannot do that after blurring
 
-    if(pict_type!=B_TYPE)
+    if(pict_type!=AV_PICTURE_TYPE_B)
         rcc->last_non_b_pict_type= pict_type;
 
     return q;
 }
 
 /**
         rcc->last_non_b_pict_type= pict_type;
 
     return q;
 }
 
 /**
- * gets the qmin & qmax for pict_type
+ * Get the qmin & qmax for pict_type.
  */
 static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type){
     int qmin= s->avctx->lmin;
  */
 static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type){
     int qmin= s->avctx->lmin;
@@ -415,10 +425,10 @@ static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pic
 
     assert(qmin <= qmax);
 
 
     assert(qmin <= qmax);
 
-    if(pict_type==B_TYPE){
+    if(pict_type==AV_PICTURE_TYPE_B){
         qmin= (int)(qmin*FFABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5);
         qmax= (int)(qmax*FFABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5);
         qmin= (int)(qmin*FFABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5);
         qmax= (int)(qmax*FFABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5);
-    }else if(pict_type==I_TYPE){
+    }else if(pict_type==AV_PICTURE_TYPE_I){
         qmin= (int)(qmin*FFABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5);
         qmax= (int)(qmax*FFABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5);
     }
         qmin= (int)(qmin*FFABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5);
         qmax= (int)(qmax*FFABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5);
     }
@@ -435,20 +445,18 @@ static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pic
 static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q, int frame_num){
     RateControlContext *rcc= &s->rc_context;
     int qmin, qmax;
 static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q, int frame_num){
     RateControlContext *rcc= &s->rc_context;
     int qmin, qmax;
-    double bits;
     const int pict_type= rce->new_pict_type;
     const double buffer_size= s->avctx->rc_buffer_size;
     const int pict_type= rce->new_pict_type;
     const double buffer_size= s->avctx->rc_buffer_size;
-    const double fps= 1/av_q2d(s->avctx->time_base);
+    const double fps= get_fps(s->avctx);
     const double min_rate= s->avctx->rc_min_rate / fps;
     const double max_rate= s->avctx->rc_max_rate / fps;
 
     get_qminmax(&qmin, &qmax, s, pict_type);
 
     /* modulation */
     const double min_rate= s->avctx->rc_min_rate / fps;
     const double max_rate= s->avctx->rc_max_rate / fps;
 
     get_qminmax(&qmin, &qmax, s, pict_type);
 
     /* modulation */
-    if(s->avctx->rc_qmod_freq && frame_num%s->avctx->rc_qmod_freq==0 && pict_type==P_TYPE)
+    if(s->avctx->rc_qmod_freq && frame_num%s->avctx->rc_qmod_freq==0 && pict_type==AV_PICTURE_TYPE_P)
         q*= s->avctx->rc_qmod_amp;
 
         q*= s->avctx->rc_qmod_amp;
 
-    bits= qp2bits(rce, q);
 //printf("q:%f\n", q);
     /* buffer overflow/underflow protection */
     if(buffer_size){
 //printf("q:%f\n", q);
     /* buffer overflow/underflow protection */
     if(buffer_size){
@@ -461,7 +469,7 @@ static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q,
             else if(d<0.0001) d=0.0001;
             q*= pow(d, 1.0/s->avctx->rc_buffer_aggressivity);
 
             else if(d<0.0001) d=0.0001;
             q*= pow(d, 1.0/s->avctx->rc_buffer_aggressivity);
 
-            q_limit= bits2qp(rce, FFMAX((min_rate - buffer_size + rcc->buffer_index)*3, 1));
+            q_limit= bits2qp(rce, FFMAX((min_rate - buffer_size + rcc->buffer_index) * s->avctx->rc_min_vbv_overflow_use, 1));
             if(q > q_limit){
                 if(s->avctx->debug&FF_DEBUG_RC){
                     av_log(s->avctx, AV_LOG_DEBUG, "limiting QP %f -> %f\n", q, q_limit);
             if(q > q_limit){
                 if(s->avctx->debug&FF_DEBUG_RC){
                     av_log(s->avctx, AV_LOG_DEBUG, "limiting QP %f -> %f\n", q, q_limit);
@@ -476,7 +484,7 @@ static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q,
             else if(d<0.0001) d=0.0001;
             q/= pow(d, 1.0/s->avctx->rc_buffer_aggressivity);
 
             else if(d<0.0001) d=0.0001;
             q/= pow(d, 1.0/s->avctx->rc_buffer_aggressivity);
 
-            q_limit= bits2qp(rce, FFMAX(rcc->buffer_index/3, 1));
+            q_limit= bits2qp(rce, FFMAX(rcc->buffer_index * s->avctx->rc_max_available_vbv_use, 1));
             if(q < q_limit){
                 if(s->avctx->debug&FF_DEBUG_RC){
                     av_log(s->avctx, AV_LOG_DEBUG, "limiting QP %f -> %f\n", q, q_limit);
             if(q < q_limit){
                 if(s->avctx->debug&FF_DEBUG_RC){
                     av_log(s->avctx, AV_LOG_DEBUG, "limiting QP %f -> %f\n", q, q_limit);
@@ -513,14 +521,6 @@ static double predict_size(Predictor *p, double q, double var)
      return p->coeff*var / (q*p->count);
 }
 
      return p->coeff*var / (q*p->count);
 }
 
-/*
-static double predict_qp(Predictor *p, double size, double var)
-{
-//printf("coeff:%f, count:%f, var:%f, size:%f//\n", p->coeff, p->count, var, size);
-     return p->coeff*var / (size*p->count);
-}
-*/
-
 static void update_predictor(Predictor *p, double q, double var, double size)
 {
     double new_coeff= size*q / (var + 1);
 static void update_predictor(Predictor *p, double q, double var, double size)
 {
     double new_coeff= size*q / (var + 1);
@@ -542,8 +542,8 @@ static void adaptive_quantization(MpegEncContext *s, double q){
     const float border_masking = s->avctx->border_masking;
     float bits_sum= 0.0;
     float cplx_sum= 0.0;
     const float border_masking = s->avctx->border_masking;
     float bits_sum= 0.0;
     float cplx_sum= 0.0;
-    float cplx_tab[s->mb_num];
-    float bits_tab[s->mb_num];
+    float *cplx_tab = s->cplx_tab;
+    float *bits_tab = s->bits_tab;
     const int qmin= s->avctx->mb_lmin;
     const int qmax= s->avctx->mb_lmax;
     Picture * const pic= &s->current_picture;
     const int qmin= s->avctx->mb_lmin;
     const int qmax= s->avctx->mb_lmax;
     Picture * const pic= &s->current_picture;
@@ -560,10 +560,6 @@ static void adaptive_quantization(MpegEncContext *s, double q){
         int mb_y = mb_xy / s->mb_stride;
         int mb_distance;
         float mb_factor = 0.0;
         int mb_y = mb_xy / s->mb_stride;
         int mb_distance;
         float mb_factor = 0.0;
-#if 0
-        if(spat_cplx < q/3) spat_cplx= q/3; //FIXME finetune
-        if(temp_cplx < q/3) temp_cplx= q/3; //FIXME finetune
-#endif
         if(spat_cplx < 4) spat_cplx= 4; //FIXME finetune
         if(temp_cplx < 4) temp_cplx= 4; //FIXME finetune
 
         if(spat_cplx < 4) spat_cplx= 4; //FIXME finetune
         if(temp_cplx < 4) temp_cplx= 4; //FIXME finetune
 
@@ -678,19 +674,20 @@ float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
     Picture * const pic= &s->current_picture;
     emms_c();
 
     Picture * const pic= &s->current_picture;
     emms_c();
 
-#ifdef CONFIG_LIBXVID
+#if 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
 
     get_qminmax(&qmin, &qmax, s, pict_type);
 
     if((s->flags&CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
         return ff_xvid_rate_estimate_qscale(s, dry_run);
 #endif
 
     get_qminmax(&qmin, &qmax, s, pict_type);
 
-    fps= 1/av_q2d(s->avctx->time_base);
+    fps= get_fps(s->avctx);
 //printf("input_pic_num:%d pic_num:%d frame_rate:%d\n", s->input_picture_number, s->picture_number, s->frame_rate);
         /* update predictors */
     if(picture_number>2 && !dry_run){
 //printf("input_pic_num:%d pic_num:%d frame_rate:%d\n", s->input_picture_number, s->picture_number, s->frame_rate);
         /* update predictors */
     if(picture_number>2 && !dry_run){
-        const int last_var= s->last_pict_type == I_TYPE ? rcc->last_mb_var_sum : rcc->last_mc_mb_var_sum;
-        update_predictor(&rcc->pred[s->last_pict_type], rcc->last_qscale, sqrt(last_var), s->frame_bits);
+        const int last_var= s->last_pict_type == AV_PICTURE_TYPE_I ? rcc->last_mb_var_sum : rcc->last_mc_mb_var_sum;
+        av_assert1(s->frame_bits >= s->stuffing_bits);
+        update_predictor(&rcc->pred[s->last_pict_type], rcc->last_qscale, sqrt(last_var), s->frame_bits - s->stuffing_bits);
     }
 
     if(s->flags&CODEC_FLAG_PASS2){
     }
 
     if(s->flags&CODEC_FLAG_PASS2){
@@ -704,29 +701,29 @@ float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
 
         //FIXME add a dts field to AVFrame and ensure its set and use it here instead of reordering
         //but the reordering is simpler for now until h.264 b pyramid must be handeld
 
         //FIXME add a dts field to AVFrame and ensure its set and use it here instead of reordering
         //but the reordering is simpler for now until h.264 b pyramid must be handeld
-        if(s->pict_type == B_TYPE || s->low_delay)
+        if(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay)
             dts_pic= s->current_picture_ptr;
         else
             dts_pic= s->last_picture_ptr;
 
 //if(dts_pic)
             dts_pic= s->current_picture_ptr;
         else
             dts_pic= s->last_picture_ptr;
 
 //if(dts_pic)
-//            av_log(NULL, AV_LOG_ERROR, "%Ld %Ld %Ld %d\n", s->current_picture_ptr->pts, s->user_specified_pts, dts_pic->pts, picture_number);
+//            av_log(NULL, AV_LOG_ERROR, "%"PRId64" %"PRId64" %"PRId64" %d\n", s->current_picture_ptr->pts, s->user_specified_pts, dts_pic->pts, picture_number);
 
 
-        if(!dts_pic || dts_pic->pts == AV_NOPTS_VALUE)
+        if (!dts_pic || dts_pic->f.pts == AV_NOPTS_VALUE)
             wanted_bits= (uint64_t)(s->bit_rate*(double)picture_number/fps);
         else
             wanted_bits= (uint64_t)(s->bit_rate*(double)picture_number/fps);
         else
-            wanted_bits= (uint64_t)(s->bit_rate*(double)dts_pic->pts/fps);
+            wanted_bits = (uint64_t)(s->bit_rate*(double)dts_pic->f.pts / fps);
     }
 
     diff= s->total_bits - wanted_bits;
     br_compensation= (a->bit_rate_tolerance - diff)/a->bit_rate_tolerance;
     if(br_compensation<=0.0) br_compensation=0.001;
 
     }
 
     diff= s->total_bits - wanted_bits;
     br_compensation= (a->bit_rate_tolerance - diff)/a->bit_rate_tolerance;
     if(br_compensation<=0.0) br_compensation=0.001;
 
-    var= pict_type == I_TYPE ? pic->mb_var_sum : pic->mc_mb_var_sum;
+    var= pict_type == AV_PICTURE_TYPE_I ? pic->mb_var_sum : pic->mc_mb_var_sum;
 
     short_term_q = 0; /* avoid warning */
     if(s->flags&CODEC_FLAG_PASS2){
 
     short_term_q = 0; /* avoid warning */
     if(s->flags&CODEC_FLAG_PASS2){
-        if(pict_type!=I_TYPE)
+        if(pict_type!=AV_PICTURE_TYPE_I)
             assert(pict_type == rce->new_pict_type);
 
         q= rce->new_qscale / br_compensation;
             assert(pict_type == rce->new_pict_type);
 
         q= rce->new_qscale / br_compensation;
@@ -742,7 +739,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
         rce->misc_bits= 1;
 
         bits= predict_size(&rcc->pred[pict_type], rce->qscale, sqrt(var));
         rce->misc_bits= 1;
 
         bits= predict_size(&rcc->pred[pict_type], rce->qscale, sqrt(var));
-        if(pict_type== I_TYPE){
+        if(pict_type== AV_PICTURE_TYPE_I){
             rce->i_count   = s->mb_num;
             rce->i_tex_bits= bits;
             rce->p_tex_bits= 0;
             rce->i_count   = s->mb_num;
             rce->i_tex_bits= bits;
             rce->p_tex_bits= 0;
@@ -772,7 +769,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
 //printf("%f ", q);
         assert(q>0.0);
 
 //printf("%f ", q);
         assert(q>0.0);
 
-        if(pict_type==P_TYPE || s->intra_only){ //FIXME type dependent blur like in 2-pass
+        if(pict_type==AV_PICTURE_TYPE_P || s->intra_only){ //FIXME type dependent blur like in 2-pass
             rcc->short_term_qsum*=a->qblur;
             rcc->short_term_qcount*=a->qblur;
 
             rcc->short_term_qsum*=a->qblur;
             rcc->short_term_qcount*=a->qblur;
 
@@ -793,7 +790,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
 
     if(s->avctx->debug&FF_DEBUG_RC){
         av_log(s->avctx, AV_LOG_DEBUG, "%c qp:%d<%2.1f<%d %d want:%d total:%d comp:%f st_q:%2.2f size:%d var:%d/%d br:%d fps:%d\n",
 
     if(s->avctx->debug&FF_DEBUG_RC){
         av_log(s->avctx, AV_LOG_DEBUG, "%c qp:%d<%2.1f<%d %d want:%d total:%d comp:%f st_q:%2.2f size:%d var:%d/%d br:%d fps:%d\n",
-        av_get_pict_type_char(pict_type), qmin, q, qmax, picture_number, (int)wanted_bits/1000, (int)s->total_bits/1000,
+        av_get_picture_type_char(pict_type), qmin, q, qmax, picture_number, (int)wanted_bits/1000, (int)s->total_bits/1000,
         br_compensation, short_term_q, s->frame_bits, pic->mb_var_sum, pic->mc_mb_var_sum, s->bit_rate/1000, (int)fps
         );
     }
         br_compensation, short_term_q, s->frame_bits, pic->mb_var_sum, pic->mc_mb_var_sum, s->bit_rate/1000, (int)fps
         );
     }
@@ -811,14 +808,6 @@ float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
         rcc->last_mc_mb_var_sum= pic->mc_mb_var_sum;
         rcc->last_mb_var_sum= pic->mb_var_sum;
     }
         rcc->last_mc_mb_var_sum= pic->mc_mb_var_sum;
         rcc->last_mb_var_sum= pic->mb_var_sum;
     }
-#if 0
-{
-    static int mvsum=0, texsum=0;
-    mvsum += s->mv_bits;
-    texsum += s->i_tex_bits + s->p_tex_bits;
-    printf("%d %d//\n\n", mvsum, texsum);
-}
-#endif
     return q;
 }
 
     return q;
 }
 
@@ -830,7 +819,7 @@ static int init_pass2(MpegEncContext *s)
     RateControlContext *rcc= &s->rc_context;
     AVCodecContext *a= s->avctx;
     int i, toobig;
     RateControlContext *rcc= &s->rc_context;
     AVCodecContext *a= s->avctx;
     int i, toobig;
-    double fps= 1/av_q2d(s->avctx->time_base);
+    double fps= get_fps(s->avctx);
     double complexity[5]={0,0,0,0,0};   // aproximate bits at quant=1
     uint64_t const_bits[5]={0,0,0,0,0}; // quantizer independent bits
     uint64_t all_const_bits;
     double complexity[5]={0,0,0,0,0};   // aproximate bits at quant=1
     uint64_t const_bits[5]={0,0,0,0,0}; // quantizer independent bits
     uint64_t all_const_bits;
@@ -840,7 +829,7 @@ static int init_pass2(MpegEncContext *s)
     //int last_i_frame=-10000000;
     const int filter_size= (int)(a->qblur*4) | 1;
     double expected_bits;
     //int last_i_frame=-10000000;
     const int filter_size= (int)(a->qblur*4) | 1;
     double expected_bits;
-    double *qscale, *blured_qscale, qscale_sum;
+    double *qscale, *blurred_qscale, qscale_sum;
 
     /* find complexity & const_bits & decide the pict_types */
     for(i=0; i<rcc->num_entries; i++){
 
     /* find complexity & const_bits & decide the pict_types */
     for(i=0; i<rcc->num_entries; i++){
@@ -855,7 +844,7 @@ static int init_pass2(MpegEncContext *s)
         complexity[rce->new_pict_type]+= (rce->i_tex_bits+ rce->p_tex_bits)*(double)rce->qscale;
         const_bits[rce->new_pict_type]+= rce->mv_bits + rce->misc_bits;
     }
         complexity[rce->new_pict_type]+= (rce->i_tex_bits+ rce->p_tex_bits)*(double)rce->qscale;
         const_bits[rce->new_pict_type]+= rce->mv_bits + rce->misc_bits;
     }
-    all_const_bits= const_bits[I_TYPE] + const_bits[P_TYPE] + const_bits[B_TYPE];
+    all_const_bits= const_bits[AV_PICTURE_TYPE_I] + const_bits[AV_PICTURE_TYPE_P] + const_bits[AV_PICTURE_TYPE_B];
 
     if(all_available_bits < all_const_bits){
         av_log(s->avctx, AV_LOG_ERROR, "requested bitrate is too low\n");
 
     if(all_available_bits < all_const_bits){
         av_log(s->avctx, AV_LOG_ERROR, "requested bitrate is too low\n");
@@ -863,7 +852,7 @@ static int init_pass2(MpegEncContext *s)
     }
 
     qscale= av_malloc(sizeof(double)*rcc->num_entries);
     }
 
     qscale= av_malloc(sizeof(double)*rcc->num_entries);
-    blured_qscale= av_malloc(sizeof(double)*rcc->num_entries);
+    blurred_qscale= av_malloc(sizeof(double)*rcc->num_entries);
     toobig = 0;
 
     for(step=256*256; step>0.0000001; step*=0.5){
     toobig = 0;
 
     for(step=256*256; step>0.0000001; step*=0.5){
@@ -874,11 +863,19 @@ static int init_pass2(MpegEncContext *s)
 
         /* find qscale */
         for(i=0; i<rcc->num_entries; i++){
 
         /* find qscale */
         for(i=0; i<rcc->num_entries; i++){
+            RateControlEntry *rce= &rcc->entry[i];
             qscale[i]= get_qscale(s, &rcc->entry[i], rate_factor, i);
             qscale[i]= get_qscale(s, &rcc->entry[i], rate_factor, i);
+            rcc->last_qscale_for[rce->pict_type] = qscale[i];
         }
         assert(filter_size%2==1);
 
         /* fixed I/B QP relative to P mode */
         }
         assert(filter_size%2==1);
 
         /* fixed I/B QP relative to P mode */
+        for(i=FFMAX(0, rcc->num_entries-300); i<rcc->num_entries; i++){
+            RateControlEntry *rce= &rcc->entry[i];
+
+            qscale[i]= get_diff_limited_q(s, rce, qscale[i]);
+        }
+
         for(i=rcc->num_entries-1; i>=0; i--){
             RateControlEntry *rce= &rcc->entry[i];
 
         for(i=rcc->num_entries-1; i>=0; i--){
             RateControlEntry *rce= &rcc->entry[i];
 
@@ -902,16 +899,16 @@ static int init_pass2(MpegEncContext *s)
                 q+= qscale[index] * coeff;
                 sum+= coeff;
             }
                 q+= qscale[index] * coeff;
                 sum+= coeff;
             }
-            blured_qscale[i]= q/sum;
+            blurred_qscale[i]= q/sum;
         }
 
         /* find expected bits */
         for(i=0; i<rcc->num_entries; i++){
             RateControlEntry *rce= &rcc->entry[i];
             double bits;
         }
 
         /* find expected bits */
         for(i=0; i<rcc->num_entries; i++){
             RateControlEntry *rce= &rcc->entry[i];
             double bits;
-            rce->new_qscale= modify_qscale(s, rce, blured_qscale[i], i);
+            rce->new_qscale= modify_qscale(s, rce, blurred_qscale[i], i);
             bits= qp2bits(rce, rce->new_qscale) + rce->mv_bits + rce->misc_bits;
             bits= qp2bits(rce, rce->new_qscale) + rce->mv_bits + rce->misc_bits;
-//printf("%d %f\n", rce->new_bits, blured_qscale[i]);
+//printf("%d %f\n", rce->new_bits, blurred_qscale[i]);
             bits += 8*ff_vbv_update(s, bits);
 
             rce->expected_bits= expected_bits;
             bits += 8*ff_vbv_update(s, bits);
 
             rce->expected_bits= expected_bits;
@@ -929,7 +926,7 @@ static int init_pass2(MpegEncContext *s)
         }
     }
     av_free(qscale);
         }
     }
     av_free(qscale);
-    av_free(blured_qscale);
+    av_free(blurred_qscale);
 
     /* check bitrate calculations and print info */
     qscale_sum = 0.0;
 
     /* check bitrate calculations and print info */
     qscale_sum = 0.0;