Libav 0.7.1
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00001 /* 00002 * Xvid rate control wrapper for lavc video encoders 00003 * 00004 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> 00005 * 00006 * This file is part of Libav. 00007 * 00008 * Libav is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * Libav is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with Libav; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00023 #include <xvid.h> 00024 #include <unistd.h> 00025 #include "avcodec.h" 00026 #include "libxvid_internal.h" 00027 //#include "dsputil.h" 00028 #include "mpegvideo.h" 00029 00030 #undef NDEBUG 00031 #include <assert.h> 00032 00033 extern unsigned int xvid_debug; 00034 00035 int ff_xvid_rate_control_init(MpegEncContext *s){ 00036 char *tmp_name; 00037 int fd, i; 00038 xvid_plg_create_t xvid_plg_create; 00039 xvid_plugin_2pass2_t xvid_2pass2; 00040 00041 //xvid_debug=-1; 00042 00043 fd=ff_tempfile("xvidrc.", &tmp_name); 00044 if (fd == -1) { 00045 av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n"); 00046 return -1; 00047 } 00048 00049 for(i=0; i<s->rc_context.num_entries; i++){ 00050 static const char *frame_types = " ipbs"; 00051 char tmp[256]; 00052 RateControlEntry *rce; 00053 00054 rce= &s->rc_context.entry[i]; 00055 00056 snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n", 00057 frame_types[rce->pict_type], (int)lrintf(rce->qscale / FF_QP2LAMBDA), rce->i_count, s->mb_num - rce->i_count - rce->skip_count, 00058 rce->skip_count, (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits+7)/8, (rce->header_bits+rce->mv_bits+7)/8); 00059 00060 //av_log(NULL, AV_LOG_ERROR, "%s\n", tmp); 00061 write(fd, tmp, strlen(tmp)); 00062 } 00063 00064 close(fd); 00065 00066 memset(&xvid_2pass2, 0, sizeof(xvid_2pass2)); 00067 xvid_2pass2.version= XVID_MAKE_VERSION(1,1,0); 00068 xvid_2pass2.filename= tmp_name; 00069 xvid_2pass2.bitrate= s->avctx->bit_rate; 00070 xvid_2pass2.vbv_size= s->avctx->rc_buffer_size; 00071 xvid_2pass2.vbv_maxrate= s->avctx->rc_max_rate; 00072 xvid_2pass2.vbv_initial= s->avctx->rc_initial_buffer_occupancy; 00073 00074 memset(&xvid_plg_create, 0, sizeof(xvid_plg_create)); 00075 xvid_plg_create.version= XVID_MAKE_VERSION(1,1,0); 00076 xvid_plg_create.fbase= s->avctx->time_base.den; 00077 xvid_plg_create.fincr= s->avctx->time_base.num; 00078 xvid_plg_create.param= &xvid_2pass2; 00079 00080 if(xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create, &s->rc_context.non_lavc_opaque)<0){ 00081 av_log(NULL, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n"); 00082 return -1; 00083 } 00084 return 0; 00085 } 00086 00087 float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run){ 00088 xvid_plg_data_t xvid_plg_data; 00089 00090 memset(&xvid_plg_data, 0, sizeof(xvid_plg_data)); 00091 xvid_plg_data.version= XVID_MAKE_VERSION(1,1,0); 00092 xvid_plg_data.width = s->width; 00093 xvid_plg_data.height= s->height; 00094 xvid_plg_data.mb_width = s->mb_width; 00095 xvid_plg_data.mb_height= s->mb_height; 00096 xvid_plg_data.fbase= s->avctx->time_base.den; 00097 xvid_plg_data.fincr= s->avctx->time_base.num; 00098 xvid_plg_data.min_quant[0]= s->avctx->qmin; 00099 xvid_plg_data.min_quant[1]= s->avctx->qmin; 00100 xvid_plg_data.min_quant[2]= s->avctx->qmin; //FIXME i/b factor & offset 00101 xvid_plg_data.max_quant[0]= s->avctx->qmax; 00102 xvid_plg_data.max_quant[1]= s->avctx->qmax; 00103 xvid_plg_data.max_quant[2]= s->avctx->qmax; //FIXME i/b factor & offset 00104 xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset; 00105 xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor; 00106 00107 #if 0 00108 xvid_plg_data.stats.hlength= X 00109 #endif 00110 00111 if(!s->rc_context.dry_run_qscale){ 00112 if(s->picture_number){ 00113 xvid_plg_data.length= 00114 xvid_plg_data.stats.length= (s->frame_bits + 7)/8; 00115 xvid_plg_data.frame_num= s->rc_context.last_picture_number; 00116 xvid_plg_data.quant= s->qscale; 00117 00118 xvid_plg_data.type= s->last_pict_type; 00119 if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_AFTER, &xvid_plg_data, NULL)){ 00120 av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n"); 00121 return -1; 00122 } 00123 } 00124 s->rc_context.last_picture_number= 00125 xvid_plg_data.frame_num= s->picture_number; 00126 xvid_plg_data.quant= 0; 00127 if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_BEFORE, &xvid_plg_data, NULL)){ 00128 av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n"); 00129 return -1; 00130 } 00131 s->rc_context.dry_run_qscale= xvid_plg_data.quant; 00132 } 00133 xvid_plg_data.quant= s->rc_context.dry_run_qscale; 00134 if(!dry_run) 00135 s->rc_context.dry_run_qscale= 0; 00136 00137 if(s->pict_type == AV_PICTURE_TYPE_B) //FIXME this is not exactly identical to xvid 00138 return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor + s->avctx->b_quant_offset; 00139 else 00140 return xvid_plg_data.quant * FF_QP2LAMBDA; 00141 } 00142 00143 void ff_xvid_rate_control_uninit(MpegEncContext *s){ 00144 xvid_plg_destroy_t xvid_plg_destroy; 00145 00146 xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, &xvid_plg_destroy, NULL); 00147 } 00148