*
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file ratecontrol.c
+ * @file
* Rate control for video encoders.
- */
+ */
+#include "libavutil/attributes.h"
#include "avcodec.h"
-#include "dsputil.h"
+#include "ratecontrol.h"
#include "mpegvideo.h"
+#include "libavutil/eval.h"
-#undef NDEBUG // allways check asserts, the speed effect is far too small to disable them
+#undef NDEBUG // Always check asserts, the speed effect is far too small to disable them.
#include <assert.h>
#ifndef M_E
#endif
static int init_pass2(MpegEncContext *s);
-static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num);
+static double get_qscale(MpegEncContext *s, RateControlEntry *rce,
+ double rate_factor, int frame_num);
-void ff_write_pass1_stats(MpegEncContext *s){
- sprintf(s->avctx->stats_out, "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;\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);
+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->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);
}
-int ff_rate_control_init(MpegEncContext *s)
+static inline double qp2bits(RateControlEntry *rce, double qp)
{
- RateControlContext *rcc= &s->rc_context;
- int i;
+ if (qp <= 0.0) {
+ av_log(NULL, AV_LOG_ERROR, "qp<=0.0\n");
+ }
+ return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits + 1) / qp;
+}
+
+static inline double bits2qp(RateControlEntry *rce, double bits)
+{
+ if (bits < 0.9) {
+ av_log(NULL, AV_LOG_ERROR, "bits<0.9\n");
+ }
+ return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits + 1) / bits;
+}
+
+av_cold int ff_rate_control_init(MpegEncContext *s)
+{
+ RateControlContext *rcc = &s->rc_context;
+ int i, res;
+ static const char * const const_names[] = {
+ "PI",
+ "E",
+ "iTex",
+ "pTex",
+ "tex",
+ "mv",
+ "fCode",
+ "iCount",
+ "mcVar",
+ "var",
+ "isI",
+ "isP",
+ "isB",
+ "avgQP",
+ "qComp",
+#if 0
+ "lastIQP",
+ "lastPQP",
+ "lastBQP",
+ "nextNonBQP",
+#endif
+ "avgIITex",
+ "avgPITex",
+ "avgPPTex",
+ "avgBPTex",
+ "avgTex",
+ NULL
+ };
+ static double (* const func1[])(void *, double) = {
+ (void *)bits2qp,
+ (void *)qp2bits,
+ NULL
+ };
+ static const char * const func1_names[] = {
+ "bits2qp",
+ "qp2bits",
+ NULL
+ };
emms_c();
- for(i=0; i<5; i++){
- rcc->pred[i].coeff= FF_QP2LAMBDA * 7.0;
- rcc->pred[i].count= 1.0;
-
- rcc->pred[i].decay= 0.4;
- rcc->i_cplx_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->last_qscale_for[i]=FF_QP2LAMBDA * 5;
+ 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++) {
+ rcc->pred[i].coeff = FF_QP2LAMBDA * 7.0;
+ rcc->pred[i].count = 1.0;
+ rcc->pred[i].decay = 0.4;
+
+ rcc->i_cplx_sum [i] =
+ rcc->p_cplx_sum [i] =
+ rcc->mv_bits_sum[i] =
+ rcc->qscale_sum [i] =
+ 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->buffer_index = s->avctx->rc_initial_buffer_occupancy;
- if(s->flags&CODEC_FLAG_PASS2){
+ if (s->flags & CODEC_FLAG_PASS2) {
int i;
char *p;
/* find number of pics */
- p= s->avctx->stats_in;
- for(i=-1; p; i++){
- p= strchr(p+1, ';');
+ p = s->avctx->stats_in;
+ for (i = -1; p; i++)
+ p = strchr(p + 1, ';');
+ i += s->max_b_frames;
+ if (i <= 0 || i >= INT_MAX / sizeof(RateControlEntry))
+ return -1;
+ 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];
+
+ 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;
}
- i+= s->max_b_frames;
- rcc->entry = (RateControlEntry*)av_mallocz(i*sizeof(RateControlEntry));
- rcc->num_entries= i;
-
- /* init all to skiped 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->qscale= rce->new_qscale=FF_QP2LAMBDA * 2;
- rce->misc_bits= s->mb_num + 10;
- rce->mb_var_sum= s->mb_num*100;
- }
-
+
/* read stats */
- p= s->avctx->stats_in;
- for(i=0; i<rcc->num_entries - s->max_b_frames; i++){
+ p = s->avctx->stats_in;
+ for (i = 0; i < rcc->num_entries - s->max_b_frames; i++) {
RateControlEntry *rce;
int picture_number;
int e;
char *next;
- next= strchr(p, ';');
- if(next){
- (*next)=0; //sscanf in unbelieavle slow on looong strings //FIXME copy / dont write
+ next = strchr(p, ';');
+ if (next) {
+ (*next) = 0; // sscanf in unbelievably slow on looong strings // FIXME copy / do not write
next++;
}
- e= sscanf(p, " in:%d ", &picture_number);
+ e = sscanf(p, " in:%d ", &picture_number);
assert(picture_number >= 0);
assert(picture_number < rcc->num_entries);
- rce= &rcc->entry[picture_number];
-
- e+=sscanf(p, " in:%*d out:%*d type:%d q:%f itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d",
- &rce->pict_type, &rce->qscale, &rce->i_tex_bits, &rce->p_tex_bits, &rce->mv_bits, &rce->misc_bits,
- &rce->f_code, &rce->b_code, &rce->mc_mb_var_sum, &rce->mb_var_sum, &rce->i_count);
- if(e!=12){
- av_log(s->avctx, AV_LOG_ERROR, "statistics are damaged at line %d, parser out=%d\n", i, e);
+ rce = &rcc->entry[picture_number];
+
+ e += sscanf(p, " in:%*d out:%*d type:%d q:%f itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d skipcount:%d hbits:%d",
+ &rce->pict_type, &rce->qscale, &rce->i_tex_bits, &rce->p_tex_bits,
+ &rce->mv_bits, &rce->misc_bits,
+ &rce->f_code, &rce->b_code,
+ &rce->mc_mb_var_sum, &rce->mb_var_sum,
+ &rce->i_count, &rce->skip_count, &rce->header_bits);
+ if (e != 14) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "statistics are damaged at line %d, parser out=%d\n",
+ i, e);
return -1;
}
- p= next;
+
+ p = next;
+ }
+
+ if (init_pass2(s) < 0)
+ return -1;
+
+ // FIXME maybe move to end
+ if ((s->flags & CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID) {
+#if 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");
+ return -1;
+#endif
}
-
- if(init_pass2(s) < 0) return -1;
}
-
- if(!(s->flags&CODEC_FLAG_PASS2)){
-
- rcc->short_term_qsum=0.001;
- rcc->short_term_qcount=0.001;
-
- rcc->pass1_rc_eq_output_sum= 0.001;
- rcc->pass1_wanted_bits=0.001;
-
+
+ if (!(s->flags & CODEC_FLAG_PASS2)) {
+ rcc->short_term_qsum = 0.001;
+ rcc->short_term_qcount = 0.001;
+
+ rcc->pass1_rc_eq_output_sum = 0.001;
+ rcc->pass1_wanted_bits = 0.001;
+
+ if (s->avctx->qblur > 1.0) {
+ av_log(s->avctx, AV_LOG_ERROR, "qblur too large\n");
+ return -1;
+ }
/* init stuff with the user specified complexity */
- if(s->avctx->rc_initial_cplx){
- for(i=0; i<60*30; i++){
- double bits= s->avctx->rc_initial_cplx * (i/10000.0 + 1.0)*s->mb_num;
+ if (s->avctx->rc_initial_cplx) {
+ 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;
-
- rce.new_pict_type= rce.pict_type;
- rce.mc_mb_var_sum= bits*s->mb_num/100000;
- rce.mb_var_sum = s->mb_num;
- rce.qscale = FF_QP2LAMBDA * 2;
- rce.f_code = 2;
- rce.b_code = 1;
- rce.misc_bits= 1;
-
- if(s->pict_type== I_TYPE){
- rce.i_count = s->mb_num;
- rce.i_tex_bits= bits;
- rce.p_tex_bits= 0;
- rce.mv_bits= 0;
- }else{
- rce.i_count = 0; //FIXME we do know this approx
- rce.i_tex_bits= 0;
- rce.p_tex_bits= bits*0.9;
- rce.mv_bits= bits*0.1;
+
+ 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.mb_var_sum = s->mb_num;
+
+ rce.qscale = FF_QP2LAMBDA * 2;
+ rce.f_code = 2;
+ rce.b_code = 1;
+ rce.misc_bits = 1;
+
+ 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.mv_bits = 0;
+ } else {
+ rce.i_count = 0; // FIXME we do know this approx
+ rce.i_tex_bits = 0;
+ rce.p_tex_bits = bits * 0.9;
+ rce.mv_bits = bits * 0.1;
}
- rcc->i_cplx_sum [rce.pict_type] += rce.i_tex_bits*rce.qscale;
- rcc->p_cplx_sum [rce.pict_type] += rce.p_tex_bits*rce.qscale;
+ rcc->i_cplx_sum[rce.pict_type] += rce.i_tex_bits * rce.qscale;
+ rcc->p_cplx_sum[rce.pict_type] += rce.p_tex_bits * rce.qscale;
rcc->mv_bits_sum[rce.pict_type] += rce.mv_bits;
- rcc->frame_count[rce.pict_type] ++;
+ rcc->frame_count[rce.pict_type]++;
- bits= rce.i_tex_bits + rce.p_tex_bits;
+ get_qscale(s, &rce, rcc->pass1_wanted_bits / rcc->pass1_rc_eq_output_sum, i);
- q= get_qscale(s, &rce, rcc->pass1_wanted_bits/rcc->pass1_rc_eq_output_sum, i);
- rcc->pass1_wanted_bits+= s->bit_rate/(s->avctx->frame_rate / (double)s->avctx->frame_rate_base);
+ // FIXME misbehaves a little for variable fps
+ rcc->pass1_wanted_bits += s->bit_rate / (1 / av_q2d(s->avctx->time_base));
}
}
-
}
-
+
return 0;
}
-void ff_rate_control_uninit(MpegEncContext *s)
+av_cold void ff_rate_control_uninit(MpegEncContext *s)
{
- RateControlContext *rcc= &s->rc_context;
+ RateControlContext *rcc = &s->rc_context;
emms_c();
+ av_expr_free(rcc->rc_eq_eval);
av_freep(&rcc->entry);
-}
-static inline double qp2bits(RateControlEntry *rce, double qp){
- if(qp<=0.0){
- av_log(NULL, AV_LOG_ERROR, "qp<=0.0\n");
- }
- return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits+1)/ qp;
+#if CONFIG_LIBXVID
+ if ((s->flags & CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
+ ff_xvid_rate_control_uninit(s);
+#endif
}
-static inline double bits2qp(RateControlEntry *rce, double bits){
- if(bits<0.9){
- av_log(NULL, AV_LOG_ERROR, "bits<0.9\n");
- }
- return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits+1)/ bits;
-}
-
-int ff_vbv_update(MpegEncContext *s, int frame_size){
- RateControlContext *rcc= &s->rc_context;
- const double fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base;
- 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;
-
-//printf("%d %f %d %f %f\n", buffer_size, rcc->buffer_index, frame_size, min_rate, max_rate);
- if(buffer_size){
+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 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;
+
+ av_dlog(s, "%d %f %d %f %f\n",
+ buffer_size, rcc->buffer_index, frame_size, min_rate, max_rate);
+
+ if (buffer_size) {
int left;
- rcc->buffer_index-= frame_size;
- if(rcc->buffer_index < 0){
+ rcc->buffer_index -= frame_size;
+ if (rcc->buffer_index < 0) {
av_log(s->avctx, AV_LOG_ERROR, "rc buffer underflow\n");
- rcc->buffer_index= 0;
+ rcc->buffer_index = 0;
}
- left= buffer_size - rcc->buffer_index - 1;
- rcc->buffer_index += clip(left, min_rate, max_rate);
-
- if(rcc->buffer_index > buffer_size){
- int stuffing= ceil((rcc->buffer_index - buffer_size)/8);
-
- if(stuffing < 4 && s->codec_id == CODEC_ID_MPEG4)
- stuffing=4;
- rcc->buffer_index -= 8*stuffing;
-
- if(s->avctx->debug & FF_DEBUG_RC)
+ left = buffer_size - rcc->buffer_index - 1;
+ rcc->buffer_index += av_clip(left, min_rate, max_rate);
+
+ if (rcc->buffer_index > buffer_size) {
+ int stuffing = ceil((rcc->buffer_index - buffer_size) / 8);
+
+ if (stuffing < 4 && s->codec_id == AV_CODEC_ID_MPEG4)
+ stuffing = 4;
+ rcc->buffer_index -= 8 * stuffing;
+
+ if (s->avctx->debug & FF_DEBUG_RC)
av_log(s->avctx, AV_LOG_DEBUG, "stuffing %d bytes\n", stuffing);
return stuffing;
}
/**
- * 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;
- AVCodecContext *a= s->avctx;
+static double get_qscale(MpegEncContext *s, RateControlEntry *rce,
+ double rate_factor, int frame_num)
+{
+ RateControlContext *rcc = &s->rc_context;
+ AVCodecContext *a = s->avctx;
+ const int pict_type = rce->new_pict_type;
+ const double mb_num = s->mb_num;
double q, bits;
- const int pict_type= rce->new_pict_type;
- const double mb_num= s->mb_num;
int i;
- double const_values[]={
+ double const_values[] = {
M_PI,
M_E,
- rce->i_tex_bits*rce->qscale,
- 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->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->i_tex_bits * rce->qscale,
+ 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 == 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->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->last_qscale_for[I_TYPE],
- rcc->last_qscale_for[P_TYPE],
- rcc->last_qscale_for[B_TYPE],
- 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],
+#if 0
+ 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,
+#endif
+ 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
};
- static const char *const_names[]={
- "PI",
- "E",
- "iTex",
- "pTex",
- "tex",
- "mv",
- "fCode",
- "iCount",
- "mcVar",
- "var",
- "isI",
- "isP",
- "isB",
- "avgQP",
- "qComp",
-/* "lastIQP",
- "lastPQP",
- "lastBQP",
- "nextNonBQP",*/
- "avgIITex",
- "avgPITex",
- "avgPPTex",
- "avgBPTex",
- "avgTex",
- NULL
- };
- static double (*func1[])(void *, double)={
- (void *)bits2qp,
- (void *)qp2bits,
- NULL
- };
- static const char *func1_names[]={
- "bits2qp",
- "qp2bits",
- NULL
- };
- bits= ff_eval(s->avctx->rc_eq, const_values, const_names, func1, func1_names, NULL, NULL, rce);
-
- rcc->pass1_rc_eq_output_sum+= bits;
- bits*=rate_factor;
- if(bits<0.0) bits=0.0;
- bits+= 1.0; //avoid 1/0 issues
-
+ 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;
+ }
+
+ rcc->pass1_rc_eq_output_sum += bits;
+ bits *= rate_factor;
+ if (bits < 0.0)
+ bits = 0.0;
+ bits += 1.0; // avoid 1/0 issues
+
/* user override */
- for(i=0; i<s->avctx->rc_override_count; i++){
- RcOverride *rco= s->avctx->rc_override;
- if(rco[i].start_frame > frame_num) continue;
- if(rco[i].end_frame < frame_num) continue;
-
- if(rco[i].qscale)
- bits= qp2bits(rce, rco[i].qscale); //FIXME move at end to really force it?
+ for (i = 0; i < s->avctx->rc_override_count; i++) {
+ RcOverride *rco = s->avctx->rc_override;
+ if (rco[i].start_frame > frame_num)
+ continue;
+ if (rco[i].end_frame < frame_num)
+ continue;
+
+ if (rco[i].qscale)
+ bits = qp2bits(rce, rco[i].qscale); // FIXME move at end to really force it?
else
- bits*= rco[i].quality_factor;
+ bits *= rco[i].quality_factor;
}
- q= bits2qp(rce, bits);
-
+ q = bits2qp(rce, bits);
+
/* I/B difference */
- if (pict_type==I_TYPE && s->avctx->i_quant_factor<0.0)
- 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 (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;
+ 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;
+
return q;
}
-static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, double q){
- 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_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))
- q= last_p_q *ABS(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;
+static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, double q)
+{
+ 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[AV_PICTURE_TYPE_P];
+ const double last_non_b_q = rcc->last_qscale_for[rcc->last_non_b_pict_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;
+ 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 */
- if(rcc->last_non_b_pict_type==pict_type || pict_type!=I_TYPE){
- double last_q= rcc->last_qscale_for[pict_type];
- const int maxdiff= FF_QP2LAMBDA * a->max_qdiff;
-
- if (q > last_q + maxdiff) q= last_q + maxdiff;
- else if(q < last_q - maxdiff) q= last_q - maxdiff;
+ 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;
+
+ if (q > last_q + maxdiff)
+ q = last_q + maxdiff;
+ else if (q < last_q - maxdiff)
+ q = last_q - maxdiff;
}
- rcc->last_qscale_for[pict_type]= q; //Note we cant do that after blurring
-
- if(pict_type!=B_TYPE)
- rcc->last_non_b_pict_type= pict_type;
+ rcc->last_qscale_for[pict_type] = q; // Note we cannot do that after blurring
+
+ if (pict_type != AV_PICTURE_TYPE_B)
+ 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;
- int qmax= s->avctx->lmax;
-
+static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type)
+{
+ int qmin = s->avctx->lmin;
+ int qmax = s->avctx->lmax;
+
assert(qmin <= qmax);
- if(pict_type==B_TYPE){
- qmin= (int)(qmin*ABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5);
- qmax= (int)(qmax*ABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5);
- }else if(pict_type==I_TYPE){
- qmin= (int)(qmin*ABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5);
- qmax= (int)(qmax*ABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5);
+ switch (pict_type) {
+ case 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);
+ break;
+ case 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);
+ break;
}
- qmin= clip(qmin, 1, FF_LAMBDA_MAX);
- qmax= clip(qmax, 1, FF_LAMBDA_MAX);
+ qmin = av_clip(qmin, 1, FF_LAMBDA_MAX);
+ qmax = av_clip(qmax, 1, FF_LAMBDA_MAX);
- if(qmax<qmin) qmax= qmin;
-
- *qmin_ret= qmin;
- *qmax_ret= qmax;
+ if (qmax < qmin)
+ qmax = qmin;
+
+ *qmin_ret = qmin;
+ *qmax_ret = qmax;
}
-static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q, int frame_num){
- RateControlContext *rcc= &s->rc_context;
+static double modify_qscale(MpegEncContext *s, RateControlEntry *rce,
+ double q, int frame_num)
+{
+ RateControlContext *rcc = &s->rc_context;
+ const double buffer_size = s->avctx->rc_buffer_size;
+ const double fps = 1 / av_q2d(s->avctx->time_base);
+ const double min_rate = s->avctx->rc_min_rate / fps;
+ const double max_rate = s->avctx->rc_max_rate / fps;
+ const int pict_type = rce->new_pict_type;
int qmin, qmax;
- double bits;
- const int pict_type= rce->new_pict_type;
- const double buffer_size= s->avctx->rc_buffer_size;
- const double fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base;
- 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)
- q*= s->avctx->rc_qmod_amp;
+ 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;
- bits= qp2bits(rce, q);
-//printf("q:%f\n", q);
/* buffer overflow/underflow protection */
- if(buffer_size){
- double expected_size= rcc->buffer_index;
+ if (buffer_size) {
+ double expected_size = rcc->buffer_index;
double q_limit;
- if(min_rate){
- double d= 2*(buffer_size - expected_size)/buffer_size;
- if(d>1.0) d=1.0;
- 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));
- 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);
- }
- q= q_limit;
+ if (min_rate) {
+ double d = 2 * (buffer_size - expected_size) / buffer_size;
+ if (d > 1.0)
+ d = 1.0;
+ 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) *
+ 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);
+ q = q_limit;
}
}
- if(max_rate){
- double d= 2*expected_size/buffer_size;
- if(d>1.0) d=1.0;
- 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));
- 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);
- }
- q= q_limit;
+ if (max_rate) {
+ double d = 2 * expected_size / buffer_size;
+ if (d > 1.0)
+ d = 1.0;
+ 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 *
+ 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);
+ q = q_limit;
}
}
}
-//printf("q:%f max:%f min:%f size:%f index:%d bits:%f agr:%f\n", q,max_rate, min_rate, buffer_size, rcc->buffer_index, bits, s->avctx->rc_buffer_aggressivity);
- if(s->avctx->rc_qsquish==0.0 || qmin==qmax){
- if (q<qmin) q=qmin;
- else if(q>qmax) q=qmax;
- }else{
- double min2= log(qmin);
- double max2= log(qmax);
-
- q= log(q);
- q= (q - min2)/(max2-min2) - 0.5;
- q*= -4.0;
- q= 1.0/(1.0 + exp(q));
- q= q*(max2-min2) + min2;
-
- q= exp(q);
+ av_dlog(s, "q:%f max:%f min:%f size:%f index:%f agr:%f\n",
+ q, max_rate, min_rate, buffer_size, rcc->buffer_index,
+ s->avctx->rc_buffer_aggressivity);
+ if (s->avctx->rc_qsquish == 0.0 || qmin == qmax) {
+ if (q < qmin)
+ q = qmin;
+ else if (q > qmax)
+ q = qmax;
+ } else {
+ double min2 = log(qmin);
+ double max2 = log(qmax);
+
+ q = log(q);
+ q = (q - min2) / (max2 - min2) - 0.5;
+ q *= -4.0;
+ q = 1.0 / (1.0 + exp(q));
+ q = q * (max2 - min2) + min2;
+
+ q = exp(q);
}
-
+
return q;
}
-//----------------------------------
+// ----------------------------------
// 1 Pass Code
static double predict_size(Predictor *p, double q, double var)
{
- 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);
+ return p->coeff * var / (q * p->count);
}
-*/
static void update_predictor(Predictor *p, double q, double var, double size)
{
- double new_coeff= size*q / (var + 1);
- if(var<10) return;
+ double new_coeff = size * q / (var + 1);
+ if (var < 10)
+ return;
- p->count*= p->decay;
- p->coeff*= p->decay;
+ p->count *= p->decay;
+ p->coeff *= p->decay;
p->count++;
- p->coeff+= new_coeff;
+ p->coeff += new_coeff;
}
-static void adaptive_quantization(MpegEncContext *s, double q){
+static void adaptive_quantization(MpegEncContext *s, double q)
+{
int i;
- const float lumi_masking= s->avctx->lumi_masking / (128.0*128.0);
- const float dark_masking= s->avctx->dark_masking / (128.0*128.0);
- const float temp_cplx_masking= s->avctx->temporal_cplx_masking;
+ const float lumi_masking = s->avctx->lumi_masking / (128.0 * 128.0);
+ const float dark_masking = s->avctx->dark_masking / (128.0 * 128.0);
+ const float temp_cplx_masking = s->avctx->temporal_cplx_masking;
const float spatial_cplx_masking = s->avctx->spatial_cplx_masking;
- const float p_masking = s->avctx->p_masking;
- float bits_sum= 0.0;
- float cplx_sum= 0.0;
- float cplx_tab[s->mb_num];
- float bits_tab[s->mb_num];
- const int qmin= s->avctx->lmin;
- const int qmax= s->avctx->lmax;
- Picture * const pic= &s->current_picture;
-
- for(i=0; i<s->mb_num; i++){
- const int mb_xy= s->mb_index2xy[i];
- float temp_cplx= sqrt(pic->mc_mb_var[mb_xy]); //FIXME merge in pow()
- float spat_cplx= sqrt(pic->mb_var[mb_xy]);
- const int lumi= pic->mb_mean[mb_xy];
+ const float p_masking = s->avctx->p_masking;
+ const float border_masking = s->avctx->border_masking;
+ float bits_sum = 0.0;
+ float cplx_sum = 0.0;
+ 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 mb_width = s->mb_width;
+ const int mb_height = s->mb_height;
+
+ for (i = 0; i < s->mb_num; i++) {
+ const int mb_xy = s->mb_index2xy[i];
+ float temp_cplx = sqrt(pic->mc_mb_var[mb_xy]); // FIXME merge in pow()
+ float spat_cplx = sqrt(pic->mb_var[mb_xy]);
+ const int lumi = pic->mb_mean[mb_xy];
float bits, cplx, factor;
-#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((s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_INTRA)){//FIXME hq mode
- cplx= spat_cplx;
- factor= 1.0 + p_masking;
- }else{
- cplx= temp_cplx;
- factor= pow(temp_cplx, - temp_cplx_masking);
+ int mb_x = mb_xy % s->mb_stride;
+ int mb_y = mb_xy / s->mb_stride;
+ int mb_distance;
+ float mb_factor = 0.0;
+ if (spat_cplx < 4)
+ spat_cplx = 4; // FIXME finetune
+ if (temp_cplx < 4)
+ temp_cplx = 4; // FIXME finetune
+
+ if ((s->mb_type[mb_xy] & CANDIDATE_MB_TYPE_INTRA)) { // FIXME hq mode
+ cplx = spat_cplx;
+ factor = 1.0 + p_masking;
+ } else {
+ cplx = temp_cplx;
+ factor = pow(temp_cplx, -temp_cplx_masking);
}
- factor*=pow(spat_cplx, - spatial_cplx_masking);
+ factor *= pow(spat_cplx, -spatial_cplx_masking);
- if(lumi>127)
- factor*= (1.0 - (lumi-128)*(lumi-128)*lumi_masking);
+ if (lumi > 127)
+ factor *= (1.0 - (lumi - 128) * (lumi - 128) * lumi_masking);
else
- factor*= (1.0 - (lumi-128)*(lumi-128)*dark_masking);
-
- if(factor<0.00001) factor= 0.00001;
-
- bits= cplx*factor;
- cplx_sum+= cplx;
- bits_sum+= bits;
- cplx_tab[i]= cplx;
- bits_tab[i]= bits;
+ factor *= (1.0 - (lumi - 128) * (lumi - 128) * dark_masking);
+
+ if (mb_x < mb_width / 5) {
+ mb_distance = mb_width / 5 - mb_x;
+ mb_factor = (float)mb_distance / (float)(mb_width / 5);
+ } else if (mb_x > 4 * mb_width / 5) {
+ mb_distance = mb_x - 4 * mb_width / 5;
+ mb_factor = (float)mb_distance / (float)(mb_width / 5);
+ }
+ if (mb_y < mb_height / 5) {
+ mb_distance = mb_height / 5 - mb_y;
+ mb_factor = FFMAX(mb_factor,
+ (float)mb_distance / (float)(mb_height / 5));
+ } else if (mb_y > 4 * mb_height / 5) {
+ mb_distance = mb_y - 4 * mb_height / 5;
+ mb_factor = FFMAX(mb_factor,
+ (float)mb_distance / (float)(mb_height / 5));
+ }
+
+ factor *= 1.0 - border_masking * mb_factor;
+
+ if (factor < 0.00001)
+ factor = 0.00001;
+
+ bits = cplx * factor;
+ cplx_sum += cplx;
+ bits_sum += bits;
+ cplx_tab[i] = cplx;
+ bits_tab[i] = bits;
}
- /* handle qmin/qmax cliping */
- if(s->flags&CODEC_FLAG_NORMALIZE_AQP){
- float factor= bits_sum/cplx_sum;
- for(i=0; i<s->mb_num; i++){
- float newq= q*cplx_tab[i]/bits_tab[i];
- newq*= factor;
+ /* handle qmin/qmax clipping */
+ if (s->flags & CODEC_FLAG_NORMALIZE_AQP) {
+ float factor = bits_sum / cplx_sum;
+ for (i = 0; i < s->mb_num; i++) {
+ float newq = q * cplx_tab[i] / bits_tab[i];
+ newq *= factor;
- if (newq > qmax){
+ if (newq > qmax) {
bits_sum -= bits_tab[i];
- cplx_sum -= cplx_tab[i]*q/qmax;
- }
- else if(newq < qmin){
+ cplx_sum -= cplx_tab[i] * q / qmax;
+ } else if (newq < qmin) {
bits_sum -= bits_tab[i];
- cplx_sum -= cplx_tab[i]*q/qmin;
+ cplx_sum -= cplx_tab[i] * q / qmin;
}
}
- if(bits_sum < 0.001) bits_sum= 0.001;
- if(cplx_sum < 0.001) cplx_sum= 0.001;
+ if (bits_sum < 0.001)
+ bits_sum = 0.001;
+ if (cplx_sum < 0.001)
+ cplx_sum = 0.001;
}
-
- for(i=0; i<s->mb_num; i++){
- const int mb_xy= s->mb_index2xy[i];
- float newq= q*cplx_tab[i]/bits_tab[i];
+
+ for (i = 0; i < s->mb_num; i++) {
+ const int mb_xy = s->mb_index2xy[i];
+ float newq = q * cplx_tab[i] / bits_tab[i];
int intq;
- if(s->flags&CODEC_FLAG_NORMALIZE_AQP){
- newq*= bits_sum/cplx_sum;
+ if (s->flags & CODEC_FLAG_NORMALIZE_AQP) {
+ newq *= bits_sum / cplx_sum;
}
- intq= (int)(newq + 0.5);
+ intq = (int)(newq + 0.5);
- if (intq > qmax) intq= qmax;
- else if(intq < qmin) intq= qmin;
-//if(i%s->mb_width==0) printf("\n");
-//printf("%2d%3d ", intq, ff_sqrt(s->mc_mb_var[i]));
- s->lambda_table[mb_xy]= intq;
+ if (intq > qmax)
+ intq = qmax;
+ else if (intq < qmin)
+ intq = qmin;
+ s->lambda_table[mb_xy] = intq;
}
}
-//FIXME rd or at least approx for dquant
-float ff_rate_estimate_qscale(MpegEncContext *s)
+void ff_get_2pass_fcode(MpegEncContext *s)
+{
+ RateControlContext *rcc = &s->rc_context;
+ RateControlEntry *rce = &rcc->entry[s->picture_number];
+
+ s->f_code = rce->f_code;
+ s->b_code = rce->b_code;
+}
+
+// FIXME rd or at least approx for dquant
+
+float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
{
float q;
int qmin, qmax;
double diff;
double short_term_q;
double fps;
- int picture_number= s->picture_number;
+ int picture_number = s->picture_number;
int64_t wanted_bits;
- RateControlContext *rcc= &s->rc_context;
- AVCodecContext *a= s->avctx;
+ RateControlContext *rcc = &s->rc_context;
+ AVCodecContext *a = s->avctx;
RateControlEntry local_rce, *rce;
double bits;
double rate_factor;
int var;
- const int pict_type= s->pict_type;
- Picture * const pic= &s->current_picture;
+ const int pict_type = s->pict_type;
+ Picture * const pic = &s->current_picture;
emms_c();
+#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);
- fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base;
-//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){
- 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);
+ fps = 1 / av_q2d(s->avctx->time_base);
+ /* update predictors */
+ if (picture_number > 2 && !dry_run) {
+ const int last_var = s->last_pict_type == AV_PICTURE_TYPE_I ? 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);
}
- if(s->flags&CODEC_FLAG_PASS2){
- assert(picture_number>=0);
- assert(picture_number<rcc->num_entries);
- rce= &rcc->entry[picture_number];
- wanted_bits= rce->expected_bits;
- }else{
- rce= &local_rce;
- wanted_bits= (uint64_t)(s->bit_rate*(double)picture_number/fps);
+ if (s->flags & CODEC_FLAG_PASS2) {
+ assert(picture_number >= 0);
+ assert(picture_number < rcc->num_entries);
+ rce = &rcc->entry[picture_number];
+ wanted_bits = rce->expected_bits;
+ } else {
+ Picture *dts_pic;
+ rce = &local_rce;
+
+ /* FIXME add a dts field to AVFrame and ensure it is set and use it
+ * here instead of reordering but the reordering is simpler for now
+ * until H.264 B-pyramid must be handled. */
+ 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->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)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 == AV_PICTURE_TYPE_I ? pic->mb_var_sum : pic->mc_mb_var_sum;
- var= pict_type == I_TYPE ? pic->mb_var_sum : pic->mc_mb_var_sum;
-
short_term_q = 0; /* avoid warning */
- if(s->flags&CODEC_FLAG_PASS2){
- if(pict_type!=I_TYPE)
+ if (s->flags & CODEC_FLAG_PASS2) {
+ if (pict_type != AV_PICTURE_TYPE_I)
assert(pict_type == rce->new_pict_type);
- q= rce->new_qscale / br_compensation;
-//printf("%f %f %f last:%d var:%d type:%d//\n", q, rce->new_qscale, br_compensation, s->frame_bits, var, pict_type);
- }else{
- rce->pict_type=
- rce->new_pict_type= pict_type;
- rce->mc_mb_var_sum= pic->mc_mb_var_sum;
- rce->mb_var_sum = pic-> mb_var_sum;
- rce->qscale = FF_QP2LAMBDA * 2;
- rce->f_code = s->f_code;
- rce->b_code = s->b_code;
- rce->misc_bits= 1;
-
- bits= predict_size(&rcc->pred[pict_type], rce->qscale, sqrt(var));
- if(pict_type== I_TYPE){
- rce->i_count = s->mb_num;
- rce->i_tex_bits= bits;
- rce->p_tex_bits= 0;
- rce->mv_bits= 0;
- }else{
- rce->i_count = 0; //FIXME we do know this approx
- rce->i_tex_bits= 0;
- rce->p_tex_bits= bits*0.9;
-
- rce->mv_bits= bits*0.1;
+ q = rce->new_qscale / br_compensation;
+ av_dlog(s, "%f %f %f last:%d var:%d type:%d//\n", q, rce->new_qscale,
+ br_compensation, s->frame_bits, var, pict_type);
+ } else {
+ rce->pict_type =
+ rce->new_pict_type = pict_type;
+ rce->mc_mb_var_sum = pic->mc_mb_var_sum;
+ rce->mb_var_sum = pic->mb_var_sum;
+ rce->qscale = FF_QP2LAMBDA * 2;
+ rce->f_code = s->f_code;
+ rce->b_code = s->b_code;
+ rce->misc_bits = 1;
+
+ bits = predict_size(&rcc->pred[pict_type], rce->qscale, sqrt(var));
+ if (pict_type == AV_PICTURE_TYPE_I) {
+ rce->i_count = s->mb_num;
+ rce->i_tex_bits = bits;
+ rce->p_tex_bits = 0;
+ rce->mv_bits = 0;
+ } else {
+ rce->i_count = 0; // FIXME we do know this approx
+ rce->i_tex_bits = 0;
+ rce->p_tex_bits = bits * 0.9;
+ rce->mv_bits = bits * 0.1;
}
- rcc->i_cplx_sum [pict_type] += rce->i_tex_bits*rce->qscale;
- rcc->p_cplx_sum [pict_type] += rce->p_tex_bits*rce->qscale;
+ rcc->i_cplx_sum[pict_type] += rce->i_tex_bits * rce->qscale;
+ rcc->p_cplx_sum[pict_type] += rce->p_tex_bits * rce->qscale;
rcc->mv_bits_sum[pict_type] += rce->mv_bits;
- rcc->frame_count[pict_type] ++;
+ rcc->frame_count[pict_type]++;
- bits= rce->i_tex_bits + rce->p_tex_bits;
- rate_factor= rcc->pass1_wanted_bits/rcc->pass1_rc_eq_output_sum * br_compensation;
-
- q= get_qscale(s, rce, rate_factor, picture_number);
+ bits = rce->i_tex_bits + rce->p_tex_bits;
+ rate_factor = rcc->pass1_wanted_bits /
+ rcc->pass1_rc_eq_output_sum * br_compensation;
- assert(q>0.0);
-//printf("%f ", q);
- q= get_diff_limited_q(s, rce, q);
-//printf("%f ", q);
- assert(q>0.0);
+ q = get_qscale(s, rce, rate_factor, picture_number);
+ if (q < 0)
+ return -1;
- if(pict_type==P_TYPE || s->intra_only){ //FIXME type dependant blur like in 2-pass
- rcc->short_term_qsum*=a->qblur;
- rcc->short_term_qcount*=a->qblur;
+ assert(q > 0.0);
+ q = get_diff_limited_q(s, rce, q);
+ assert(q > 0.0);
- rcc->short_term_qsum+= q;
+ // FIXME type dependent blur like in 2-pass
+ if (pict_type == AV_PICTURE_TYPE_P || s->intra_only) {
+ rcc->short_term_qsum *= a->qblur;
+ rcc->short_term_qcount *= a->qblur;
+
+ rcc->short_term_qsum += q;
rcc->short_term_qcount++;
-//printf("%f ", q);
- q= short_term_q= rcc->short_term_qsum/rcc->short_term_qcount;
-//printf("%f ", q);
+ q = short_term_q = rcc->short_term_qsum / rcc->short_term_qcount;
}
- assert(q>0.0);
-
- q= modify_qscale(s, rce, q, picture_number);
+ assert(q > 0.0);
+
+ q = modify_qscale(s, rce, q, picture_number);
- rcc->pass1_wanted_bits+= s->bit_rate/fps;
+ rcc->pass1_wanted_bits += s->bit_rate / fps;
- assert(q>0.0);
+ assert(q > 0.0);
}
- 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,
- br_compensation, short_term_q, s->frame_bits, pic->mb_var_sum, pic->mc_mb_var_sum, s->bit_rate/1000, (int)fps
- );
+ 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_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);
}
- if (q<qmin) q=qmin;
- else if(q>qmax) q=qmax;
+ if (q < qmin)
+ q = qmin;
+ else if (q > qmax)
+ q = qmax;
- if(s->adaptive_quant)
+ if (s->adaptive_quant)
adaptive_quantization(s, q);
else
- q= (int)(q + 0.5);
-
- rcc->last_qscale= q;
- 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
+ q = (int)(q + 0.5);
+
+ if (!dry_run) {
+ rcc->last_qscale = q;
+ rcc->last_mc_mb_var_sum = pic->mc_mb_var_sum;
+ rcc->last_mb_var_sum = pic->mb_var_sum;
+ }
return q;
}
-//----------------------------------------------
+// ----------------------------------------------
// 2-Pass code
static int init_pass2(MpegEncContext *s)
{
- RateControlContext *rcc= &s->rc_context;
- AVCodecContext *a= s->avctx;
- int i;
- double fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base;
- double complexity[5]={0,0,0,0,0}; // aproximate bits at quant=1
- double avg_quantizer[5];
- uint64_t const_bits[5]={0,0,0,0,0}; // quantizer idependant bits
- uint64_t available_bits[5];
+ RateControlContext *rcc = &s->rc_context;
+ AVCodecContext *a = s->avctx;
+ int i, toobig;
+ double fps = 1 / av_q2d(s->avctx->time_base);
+ double complexity[5] = { 0 }; // approximate bits at quant=1
+ uint64_t const_bits[5] = { 0 }; // quantizer independent bits
uint64_t all_const_bits;
- uint64_t all_available_bits= (uint64_t)(s->bit_rate*(double)rcc->num_entries/fps);
- double rate_factor=0;
+ uint64_t all_available_bits = (uint64_t)(s->bit_rate *
+ (double)rcc->num_entries / fps);
+ double rate_factor = 0;
double step;
- //int last_i_frame=-10000000;
- const int filter_size= (int)(a->qblur*4) | 1;
+ const int filter_size = (int)(a->qblur * 4) | 1;
double expected_bits;
- double *qscale, *blured_qscale;
+ double *qscale, *blurred_qscale, qscale_sum;
/* find complexity & const_bits & decide the pict_types */
- for(i=0; i<rcc->num_entries; i++){
- RateControlEntry *rce= &rcc->entry[i];
-
- rce->new_pict_type= rce->pict_type;
- rcc->i_cplx_sum [rce->pict_type] += rce->i_tex_bits*rce->qscale;
- rcc->p_cplx_sum [rce->pict_type] += rce->p_tex_bits*rce->qscale;
+ for (i = 0; i < rcc->num_entries; i++) {
+ RateControlEntry *rce = &rcc->entry[i];
+
+ rce->new_pict_type = rce->pict_type;
+ rcc->i_cplx_sum[rce->pict_type] += rce->i_tex_bits * rce->qscale;
+ rcc->p_cplx_sum[rce->pict_type] += rce->p_tex_bits * rce->qscale;
rcc->mv_bits_sum[rce->pict_type] += rce->mv_bits;
- rcc->frame_count[rce->pict_type] ++;
+ rcc->frame_count[rce->pict_type]++;
- 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];
-
- if(all_available_bits < all_const_bits){
- av_log(s->avctx, AV_LOG_ERROR, "requested bitrate is to low\n");
+
+ 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");
return -1;
}
-
- /* find average quantizers */
- avg_quantizer[P_TYPE]=0;
- for(step=256*256; step>0.0000001; step*=0.5){
- double expected_bits=0;
- avg_quantizer[P_TYPE]+= step;
-
- avg_quantizer[I_TYPE]= avg_quantizer[P_TYPE]*ABS(s->avctx->i_quant_factor) + s->avctx->i_quant_offset;
- avg_quantizer[B_TYPE]= avg_quantizer[P_TYPE]*ABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
-
- expected_bits=
- + all_const_bits
- + complexity[I_TYPE]/avg_quantizer[I_TYPE]
- + complexity[P_TYPE]/avg_quantizer[P_TYPE]
- + complexity[B_TYPE]/avg_quantizer[B_TYPE];
-
- if(expected_bits < all_available_bits) avg_quantizer[P_TYPE]-= step;
-//printf("%f %lld %f\n", expected_bits, all_available_bits, avg_quantizer[P_TYPE]);
- }
-//printf("qp_i:%f, qp_p:%f, qp_b:%f\n", avg_quantizer[I_TYPE],avg_quantizer[P_TYPE],avg_quantizer[B_TYPE]);
- for(i=0; i<5; i++){
- available_bits[i]= const_bits[i] + complexity[i]/avg_quantizer[i];
- }
-//printf("%lld %lld %lld %lld\n", available_bits[I_TYPE], available_bits[P_TYPE], available_bits[B_TYPE], all_available_bits);
-
- qscale= av_malloc(sizeof(double)*rcc->num_entries);
- blured_qscale= av_malloc(sizeof(double)*rcc->num_entries);
+ 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) {
+ expected_bits = 0;
+ rate_factor += step;
- for(step=256*256; step>0.0000001; step*=0.5){
- expected_bits=0;
- rate_factor+= step;
-
- rcc->buffer_index= s->avctx->rc_buffer_size/2;
+ rcc->buffer_index = s->avctx->rc_buffer_size / 2;
/* find qscale */
- for(i=0; i<rcc->num_entries; i++){
- qscale[i]= get_qscale(s, &rcc->entry[i], rate_factor, i);
+ for (i = 0; i < rcc->num_entries; i++) {
+ RateControlEntry *rce = &rcc->entry[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);
+ assert(filter_size % 2 == 1);
/* fixed I/B QP relative to P mode */
- for(i=rcc->num_entries-1; i>=0; 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];
+
+ qscale[i] = get_diff_limited_q(s, rce, qscale[i]);
}
/* smooth curve */
- for(i=0; i<rcc->num_entries; i++){
- RateControlEntry *rce= &rcc->entry[i];
- const int pict_type= rce->new_pict_type;
+ for (i = 0; i < rcc->num_entries; i++) {
+ RateControlEntry *rce = &rcc->entry[i];
+ const int pict_type = rce->new_pict_type;
int j;
- double q=0.0, sum=0.0;
-
- for(j=0; j<filter_size; j++){
- int index= i+j-filter_size/2;
- double d= index-i;
- double coeff= a->qblur==0 ? 1.0 : exp(-d*d/(a->qblur * a->qblur));
-
- if(index < 0 || index >= rcc->num_entries) continue;
- if(pict_type != rcc->entry[index].new_pict_type) continue;
- q+= qscale[index] * coeff;
- sum+= coeff;
+ double q = 0.0, sum = 0.0;
+
+ for (j = 0; j < filter_size; j++) {
+ int index = i + j - filter_size / 2;
+ double d = index - i;
+ double coeff = a->qblur == 0 ? 1.0 : exp(-d * d / (a->qblur * a->qblur));
+
+ if (index < 0 || index >= rcc->num_entries)
+ continue;
+ if (pict_type != rcc->entry[index].new_pict_type)
+ continue;
+ 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];
+ 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);
- bits= qp2bits(rce, rce->new_qscale) + rce->mv_bits + rce->misc_bits;
-//printf("%d %f\n", rce->new_bits, blured_qscale[i]);
- bits += 8*ff_vbv_update(s, bits);
- rce->expected_bits= expected_bits;
- expected_bits += bits;
+ rce->new_qscale = modify_qscale(s, rce, blurred_qscale[i], i);
+
+ bits = qp2bits(rce, rce->new_qscale) + rce->mv_bits + rce->misc_bits;
+ bits += 8 * ff_vbv_update(s, bits);
+
+ rce->expected_bits = expected_bits;
+ expected_bits += bits;
}
-// printf("%f %d %f\n", expected_bits, (int)all_available_bits, rate_factor);
- if(expected_bits > all_available_bits) rate_factor-= step;
+ av_dlog(s->avctx,
+ "expected_bits: %f all_available_bits: %d rate_factor: %f\n",
+ expected_bits, (int)all_available_bits, rate_factor);
+ if (expected_bits > all_available_bits) {
+ rate_factor -= step;
+ ++toobig;
+ }
}
av_free(qscale);
- av_free(blured_qscale);
-
- if(abs(expected_bits/all_available_bits - 1.0) > 0.01 ){
- av_log(s->avctx, AV_LOG_ERROR, "Error: 2pass curve failed to converge\n");
+ av_free(blurred_qscale);
+
+ /* check bitrate calculations and print info */
+ qscale_sum = 0.0;
+ for (i = 0; i < rcc->num_entries; i++) {
+ av_dlog(s, "[lavc rc] entry[%d].new_qscale = %.3f qp = %.3f\n",
+ i,
+ rcc->entry[i].new_qscale,
+ rcc->entry[i].new_qscale / FF_QP2LAMBDA);
+ qscale_sum += av_clip(rcc->entry[i].new_qscale / FF_QP2LAMBDA,
+ s->avctx->qmin, s->avctx->qmax);
+ }
+ assert(toobig <= 40);
+ av_log(s->avctx, AV_LOG_DEBUG,
+ "[lavc rc] requested bitrate: %d bps expected bitrate: %d bps\n",
+ s->bit_rate,
+ (int)(expected_bits / ((double)all_available_bits / s->bit_rate)));
+ av_log(s->avctx, AV_LOG_DEBUG,
+ "[lavc rc] estimated target average qp: %.3f\n",
+ (float)qscale_sum / rcc->num_entries);
+ if (toobig == 0) {
+ av_log(s->avctx, AV_LOG_INFO,
+ "[lavc rc] Using all of requested bitrate is not "
+ "necessary for this video with these parameters.\n");
+ } else if (toobig == 40) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "[lavc rc] Error: bitrate too low for this video "
+ "with these parameters.\n");
+ return -1;
+ } else if (fabs(expected_bits / all_available_bits - 1.0) > 0.01) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "[lavc rc] Error: 2pass curve failed to converge\n");
return -1;
}