1/* 2 * Xvid rate control wrapper for lavc video encoders 3 * 4 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> 5 * 6 * This file is part of FFmpeg. 7 * 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. 12 * 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. 17 * 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 21 */ 22 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" 29 30#undef NDEBUG 31#include <assert.h> 32 33extern unsigned int xvid_debug; 34 35int 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; 40 41//xvid_debug=-1; 42 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; 47 } 48 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; 53 54 rce= &s->rc_context.entry[i]; 55 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); 59 60//av_log(NULL, AV_LOG_ERROR, "%s\n", tmp); 61 write(fd, tmp, strlen(tmp)); 62 } 63 64 close(fd); 65 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; 73 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; 79 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; 83 } 84 return 0; 85} 86 87float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run){ 88 xvid_plg_data_t xvid_plg_data; 89 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; 106 107#if 0 108 xvid_plg_data.stats.hlength= X 109#endif 110 111 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; 117 118 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; 122 } 123 } 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; 130 } 131 s->rc_context.dry_run_qscale= xvid_plg_data.quant; 132 } 133 xvid_plg_data.quant= s->rc_context.dry_run_qscale; 134 if(!dry_run) 135 s->rc_context.dry_run_qscale= 0; 136 137 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; 141} 142 143void ff_xvid_rate_control_uninit(MpegEncContext *s){ 144 xvid_plg_destroy_t xvid_plg_destroy; 145 146 xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, &xvid_plg_destroy, NULL); 147} 148 149