Merge branch 'master' of http://repo.or.cz/r/FFMpeg-mirror
[FFMpeg-mirror/DVCPRO-HD.git] / libavcodec / libxvid_rc.c
blobc161ba71010b8e5b1c02e38dbbc0869afa63d464
1 /*
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
23 #include <xvid.h>
24 #include <unistd.h>
25 #include "avcodec.h"
26 #include "libxvid_internal.h"
27 //#include "dsputil.h"
28 #include "mpegvideo.h"
30 #undef NDEBUG
31 #include <assert.h>
33 extern unsigned int xvid_debug;
35 int ff_xvid_rate_control_init(MpegEncContext *s){
36 char *tmp_name;
37 int fd, i;
38 xvid_plg_create_t xvid_plg_create;
39 xvid_plugin_2pass2_t xvid_2pass2;
41 //xvid_debug=-1;
43 fd=av_tempfile("xvidrc.", &tmp_name);
44 if (fd == -1) {
45 av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n");
46 return -1;
49 for(i=0; i<s->rc_context.num_entries; i++){
50 static const char *frame_types = " ipbs";
51 char tmp[256];
52 RateControlEntry *rce;
54 rce= &s->rc_context.entry[i];
56 snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n",
57 frame_types[rce->pict_type], (int)lrintf(rce->qscale / FF_QP2LAMBDA), rce->i_count, s->mb_num - rce->i_count - rce->skip_count,
58 rce->skip_count, (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits+7)/8, (rce->header_bits+rce->mv_bits+7)/8);
60 //av_log(NULL, AV_LOG_ERROR, "%s\n", tmp);
61 write(fd, tmp, strlen(tmp));
64 close(fd);
66 memset(&xvid_2pass2, 0, sizeof(xvid_2pass2));
67 xvid_2pass2.version= XVID_MAKE_VERSION(1,1,0);
68 xvid_2pass2.filename= tmp_name;
69 xvid_2pass2.bitrate= s->avctx->bit_rate;
70 xvid_2pass2.vbv_size= s->avctx->rc_buffer_size;
71 xvid_2pass2.vbv_maxrate= s->avctx->rc_max_rate;
72 xvid_2pass2.vbv_initial= s->avctx->rc_initial_buffer_occupancy;
74 memset(&xvid_plg_create, 0, sizeof(xvid_plg_create));
75 xvid_plg_create.version= XVID_MAKE_VERSION(1,1,0);
76 xvid_plg_create.fbase= s->avctx->time_base.den;
77 xvid_plg_create.fincr= s->avctx->time_base.num;
78 xvid_plg_create.param= &xvid_2pass2;
80 if(xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create, &s->rc_context.non_lavc_opaque)<0){
81 av_log(NULL, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n");
82 return -1;
84 return 0;
87 float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run){
88 xvid_plg_data_t xvid_plg_data;
90 memset(&xvid_plg_data, 0, sizeof(xvid_plg_data));
91 xvid_plg_data.version= XVID_MAKE_VERSION(1,1,0);
92 xvid_plg_data.width = s->width;
93 xvid_plg_data.height= s->height;
94 xvid_plg_data.mb_width = s->mb_width;
95 xvid_plg_data.mb_height= s->mb_height;
96 xvid_plg_data.fbase= s->avctx->time_base.den;
97 xvid_plg_data.fincr= s->avctx->time_base.num;
98 xvid_plg_data.min_quant[0]= s->avctx->qmin;
99 xvid_plg_data.min_quant[1]= s->avctx->qmin;
100 xvid_plg_data.min_quant[2]= s->avctx->qmin; //FIXME i/b factor & offset
101 xvid_plg_data.max_quant[0]= s->avctx->qmax;
102 xvid_plg_data.max_quant[1]= s->avctx->qmax;
103 xvid_plg_data.max_quant[2]= s->avctx->qmax; //FIXME i/b factor & offset
104 xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset;
105 xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor;
107 #if 0
108 xvid_plg_data.stats.hlength= X
109 #endif
111 if(!s->rc_context.dry_run_qscale){
112 if(s->picture_number){
113 xvid_plg_data.length=
114 xvid_plg_data.stats.length= (s->frame_bits + 7)/8;
115 xvid_plg_data.frame_num= s->rc_context.last_picture_number;
116 xvid_plg_data.quant= s->qscale;
118 xvid_plg_data.type= s->last_pict_type;
119 if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_AFTER, &xvid_plg_data, NULL)){
120 av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n");
121 return -1;
124 s->rc_context.last_picture_number=
125 xvid_plg_data.frame_num= s->picture_number;
126 xvid_plg_data.quant= 0;
127 if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_BEFORE, &xvid_plg_data, NULL)){
128 av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n");
129 return -1;
131 s->rc_context.dry_run_qscale= xvid_plg_data.quant;
133 xvid_plg_data.quant= s->rc_context.dry_run_qscale;
134 if(!dry_run)
135 s->rc_context.dry_run_qscale= 0;
137 if(s->pict_type == FF_B_TYPE) //FIXME this is not exactly identical to xvid
138 return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor + s->avctx->b_quant_offset;
139 else
140 return xvid_plg_data.quant * FF_QP2LAMBDA;
143 void ff_xvid_rate_control_uninit(MpegEncContext *s){
144 xvid_plg_destroy_t xvid_plg_destroy;
146 xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, &xvid_plg_destroy, NULL);