2 * Xvid rate control wrapper for lavc video encoders
4 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "libavutil/file.h"
27 #include "libxvid_internal.h"
28 //#include "dsputil.h"
29 #include "mpegvideo.h"
34 extern unsigned int xvid_debug;
36 int ff_xvid_rate_control_init(MpegEncContext *s){
39 xvid_plg_create_t xvid_plg_create;
40 xvid_plugin_2pass2_t xvid_2pass2;
44 fd=av_tempfile("xvidrc.", &tmp_name, 0, s->avctx);
46 av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n");
50 for(i=0; i<s->rc_context.num_entries; i++){
51 static const char *frame_types = " ipbs";
53 RateControlEntry *rce;
55 rce= &s->rc_context.entry[i];
57 snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n",
58 frame_types[rce->pict_type], (int)lrintf(rce->qscale / FF_QP2LAMBDA), rce->i_count, s->mb_num - rce->i_count - rce->skip_count,
59 rce->skip_count, (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits+7)/8, (rce->header_bits+rce->mv_bits+7)/8);
61 //av_log(NULL, AV_LOG_ERROR, "%s\n", tmp);
62 write(fd, tmp, strlen(tmp));
67 memset(&xvid_2pass2, 0, sizeof(xvid_2pass2));
68 xvid_2pass2.version= XVID_MAKE_VERSION(1,1,0);
69 xvid_2pass2.filename= tmp_name;
70 xvid_2pass2.bitrate= s->avctx->bit_rate;
71 xvid_2pass2.vbv_size= s->avctx->rc_buffer_size;
72 xvid_2pass2.vbv_maxrate= s->avctx->rc_max_rate;
73 xvid_2pass2.vbv_initial= s->avctx->rc_initial_buffer_occupancy;
75 memset(&xvid_plg_create, 0, sizeof(xvid_plg_create));
76 xvid_plg_create.version= XVID_MAKE_VERSION(1,1,0);
77 xvid_plg_create.fbase= s->avctx->time_base.den;
78 xvid_plg_create.fincr= s->avctx->time_base.num;
79 xvid_plg_create.param= &xvid_2pass2;
81 if(xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create, &s->rc_context.non_lavc_opaque)<0){
82 av_log(NULL, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n");
88 float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run){
89 xvid_plg_data_t xvid_plg_data;
91 memset(&xvid_plg_data, 0, sizeof(xvid_plg_data));
92 xvid_plg_data.version= XVID_MAKE_VERSION(1,1,0);
93 xvid_plg_data.width = s->width;
94 xvid_plg_data.height= s->height;
95 xvid_plg_data.mb_width = s->mb_width;
96 xvid_plg_data.mb_height= s->mb_height;
97 xvid_plg_data.fbase= s->avctx->time_base.den;
98 xvid_plg_data.fincr= s->avctx->time_base.num;
99 xvid_plg_data.min_quant[0]= s->avctx->qmin;
100 xvid_plg_data.min_quant[1]= s->avctx->qmin;
101 xvid_plg_data.min_quant[2]= s->avctx->qmin; //FIXME i/b factor & offset
102 xvid_plg_data.max_quant[0]= s->avctx->qmax;
103 xvid_plg_data.max_quant[1]= s->avctx->qmax;
104 xvid_plg_data.max_quant[2]= s->avctx->qmax; //FIXME i/b factor & offset
105 xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset;
106 xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor;
109 xvid_plg_data.stats.hlength= X
112 if(!s->rc_context.dry_run_qscale){
113 if(s->picture_number){
114 xvid_plg_data.length=
115 xvid_plg_data.stats.length= (s->frame_bits + 7)/8;
116 xvid_plg_data.frame_num= s->rc_context.last_picture_number;
117 xvid_plg_data.quant= s->qscale;
119 xvid_plg_data.type= s->last_pict_type;
120 if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_AFTER, &xvid_plg_data, NULL)){
121 av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n");
125 s->rc_context.last_picture_number=
126 xvid_plg_data.frame_num= s->picture_number;
127 xvid_plg_data.quant= 0;
128 if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_BEFORE, &xvid_plg_data, NULL)){
129 av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n");
132 s->rc_context.dry_run_qscale= xvid_plg_data.quant;
134 xvid_plg_data.quant= s->rc_context.dry_run_qscale;
136 s->rc_context.dry_run_qscale= 0;
138 if(s->pict_type == AV_PICTURE_TYPE_B) //FIXME this is not exactly identical to xvid
139 return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor + s->avctx->b_quant_offset;
141 return xvid_plg_data.quant * FF_QP2LAMBDA;
144 void ff_xvid_rate_control_uninit(MpegEncContext *s){
145 xvid_plg_destroy_t xvid_plg_destroy;
147 xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, &xvid_plg_destroy, NULL);