136 lines
5.1 KiB
C
136 lines
5.1 KiB
C
/*
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* Xvid rate control wrapper for lavc video encoders
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*
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <xvid.h>
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#include <unistd.h>
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#include "avcodec.h"
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#include "libxvid_internal.h"
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//#include "dsputil.h"
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#include "mpegvideo.h"
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#undef NDEBUG
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#include <assert.h>
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int ff_xvid_rate_control_init(MpegEncContext *s){
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char *tmp_name;
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int fd, i;
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xvid_plg_create_t xvid_plg_create = { 0 };
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xvid_plugin_2pass2_t xvid_2pass2 = { 0 };
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fd=ff_tempfile("xvidrc.", &tmp_name);
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if (fd == -1) {
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av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n");
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return -1;
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}
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for(i=0; i<s->rc_context.num_entries; i++){
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static const char frame_types[] = " ipbs";
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char tmp[256];
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RateControlEntry *rce;
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rce= &s->rc_context.entry[i];
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snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n",
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frame_types[rce->pict_type], (int)lrintf(rce->qscale / FF_QP2LAMBDA), rce->i_count, s->mb_num - rce->i_count - rce->skip_count,
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rce->skip_count, (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits+7)/8, (rce->header_bits+rce->mv_bits+7)/8);
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write(fd, tmp, strlen(tmp));
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}
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close(fd);
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xvid_2pass2.version= XVID_MAKE_VERSION(1,1,0);
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xvid_2pass2.filename= tmp_name;
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xvid_2pass2.bitrate= s->avctx->bit_rate;
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xvid_2pass2.vbv_size= s->avctx->rc_buffer_size;
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xvid_2pass2.vbv_maxrate= s->avctx->rc_max_rate;
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xvid_2pass2.vbv_initial= s->avctx->rc_initial_buffer_occupancy;
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xvid_plg_create.version= XVID_MAKE_VERSION(1,1,0);
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xvid_plg_create.fbase= s->avctx->time_base.den;
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xvid_plg_create.fincr= s->avctx->time_base.num;
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xvid_plg_create.param= &xvid_2pass2;
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if(xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create, &s->rc_context.non_lavc_opaque)<0){
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av_log(NULL, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n");
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return -1;
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}
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return 0;
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}
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float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run){
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xvid_plg_data_t xvid_plg_data = { 0 };
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xvid_plg_data.version= XVID_MAKE_VERSION(1,1,0);
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xvid_plg_data.width = s->width;
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xvid_plg_data.height= s->height;
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xvid_plg_data.mb_width = s->mb_width;
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xvid_plg_data.mb_height= s->mb_height;
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xvid_plg_data.fbase= s->avctx->time_base.den;
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xvid_plg_data.fincr= s->avctx->time_base.num;
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xvid_plg_data.min_quant[0]= s->avctx->qmin;
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xvid_plg_data.min_quant[1]= s->avctx->qmin;
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xvid_plg_data.min_quant[2]= s->avctx->qmin; //FIXME i/b factor & offset
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xvid_plg_data.max_quant[0]= s->avctx->qmax;
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xvid_plg_data.max_quant[1]= s->avctx->qmax;
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xvid_plg_data.max_quant[2]= s->avctx->qmax; //FIXME i/b factor & offset
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xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset;
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xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor;
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if(!s->rc_context.dry_run_qscale){
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if(s->picture_number){
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xvid_plg_data.length=
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xvid_plg_data.stats.length= (s->frame_bits + 7)/8;
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xvid_plg_data.frame_num= s->rc_context.last_picture_number;
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xvid_plg_data.quant= s->qscale;
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xvid_plg_data.type= s->last_pict_type;
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if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_AFTER, &xvid_plg_data, NULL)){
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av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n");
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return -1;
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}
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}
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s->rc_context.last_picture_number=
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xvid_plg_data.frame_num= s->picture_number;
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xvid_plg_data.quant= 0;
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if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_BEFORE, &xvid_plg_data, NULL)){
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av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n");
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return -1;
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}
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s->rc_context.dry_run_qscale= xvid_plg_data.quant;
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}
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xvid_plg_data.quant= s->rc_context.dry_run_qscale;
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if(!dry_run)
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s->rc_context.dry_run_qscale= 0;
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if(s->pict_type == AV_PICTURE_TYPE_B) //FIXME this is not exactly identical to xvid
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return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor + s->avctx->b_quant_offset;
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else
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return xvid_plg_data.quant * FF_QP2LAMBDA;
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}
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void ff_xvid_rate_control_uninit(MpegEncContext *s){
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xvid_plg_destroy_t xvid_plg_destroy;
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xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, &xvid_plg_destroy, NULL);
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}
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