diff options
Diffstat (limited to 'libavcodec/libxvid_rc.c')
| -rw-r--r-- | libavcodec/libxvid_rc.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/libavcodec/libxvid_rc.c b/libavcodec/libxvid_rc.c new file mode 100644 index 0000000000..f06f5b9605 --- /dev/null +++ b/libavcodec/libxvid_rc.c @@ -0,0 +1,148 @@ +/* + * xvid Rate control wrapper for lavc video encoders + * + * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <xvid.h> +#include <unistd.h> +#include "avcodec.h" +#include "libxvid_internal.h" +//#include "dsputil.h" +#include "mpegvideo.h" + +#undef NDEBUG +#include <assert.h> + +extern unsigned int xvid_debug; + +int ff_xvid_rate_control_init(MpegEncContext *s){ + char *tmp_name; + int fd, i; + xvid_plg_create_t xvid_plg_create; + xvid_plugin_2pass2_t xvid_2pass2; + +//xvid_debug=-1; + + fd=av_tempfile("xvidrc.", &tmp_name); + if (fd == -1) { + av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n"); + return -1; + } + + for(i=0; i<s->rc_context.num_entries; i++){ + static const char *frame_types = " ipbs"; + char tmp[256]; + RateControlEntry *rce; + + rce= &s->rc_context.entry[i]; + + snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n", + frame_types[rce->pict_type], (int)lrintf(rce->qscale / FF_QP2LAMBDA), rce->i_count, s->mb_num - rce->i_count - rce->skip_count, + rce->skip_count, (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits+7)/8, (rce->header_bits+rce->mv_bits+7)/8); + +//av_log(NULL, AV_LOG_ERROR, "%s\n", tmp); + write(fd, tmp, strlen(tmp)); + } + + close(fd); + + memset(&xvid_2pass2, 0, sizeof(xvid_2pass2)); + xvid_2pass2.version= XVID_MAKE_VERSION(1,1,0); + xvid_2pass2.filename= tmp_name; + xvid_2pass2.bitrate= s->avctx->bit_rate; + xvid_2pass2.vbv_size= s->avctx->rc_buffer_size; + xvid_2pass2.vbv_maxrate= s->avctx->rc_max_rate; + xvid_2pass2.vbv_initial= s->avctx->rc_initial_buffer_occupancy; + + memset(&xvid_plg_create, 0, sizeof(xvid_plg_create)); + xvid_plg_create.version= XVID_MAKE_VERSION(1,1,0); + xvid_plg_create.fbase= s->avctx->time_base.den; + xvid_plg_create.fincr= s->avctx->time_base.num; + xvid_plg_create.param= &xvid_2pass2; + + if(xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create, &s->rc_context.non_lavc_opaque)<0){ + av_log(NULL, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n"); + return -1; + } + return 0; +} + +float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run){ + xvid_plg_data_t xvid_plg_data; + + memset(&xvid_plg_data, 0, sizeof(xvid_plg_data)); + xvid_plg_data.version= XVID_MAKE_VERSION(1,1,0); + xvid_plg_data.width = s->width; + xvid_plg_data.height= s->height; + xvid_plg_data.mb_width = s->mb_width; + xvid_plg_data.mb_height= s->mb_height; + xvid_plg_data.fbase= s->avctx->time_base.den; + xvid_plg_data.fincr= s->avctx->time_base.num; + xvid_plg_data.min_quant[0]= s->avctx->qmin; + xvid_plg_data.min_quant[1]= s->avctx->qmin; + xvid_plg_data.min_quant[2]= s->avctx->qmin; //FIXME i/b factor & offset + xvid_plg_data.max_quant[0]= s->avctx->qmax; + xvid_plg_data.max_quant[1]= s->avctx->qmax; + xvid_plg_data.max_quant[2]= s->avctx->qmax; //FIXME i/b factor & offset + xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset; + xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor; + +#if 0 + xvid_plg_data.stats.hlength= X +#endif + + if(!s->rc_context.dry_run_qscale){ + if(s->picture_number){ + xvid_plg_data.length= + xvid_plg_data.stats.length= (s->frame_bits + 7)/8; + xvid_plg_data.frame_num= s->rc_context.last_picture_number; + xvid_plg_data.quant= s->qscale; + + xvid_plg_data.type= s->last_pict_type; + if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_AFTER, &xvid_plg_data, NULL)){ + av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n"); + return -1; + } + } + s->rc_context.last_picture_number= + xvid_plg_data.frame_num= s->picture_number; + xvid_plg_data.quant= 0; + if(xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_BEFORE, &xvid_plg_data, NULL)){ + av_log(s->avctx, AV_LOG_ERROR, "xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n"); + return -1; + } + s->rc_context.dry_run_qscale= xvid_plg_data.quant; + } + xvid_plg_data.quant= s->rc_context.dry_run_qscale; + if(!dry_run) + s->rc_context.dry_run_qscale= 0; + + if(s->pict_type == B_TYPE) //FIXME this is not exactly identical to xvid + return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor + s->avctx->b_quant_offset; + else + return xvid_plg_data.quant * FF_QP2LAMBDA; +} + +void ff_xvid_rate_control_uninit(MpegEncContext *s){ + xvid_plg_destroy_t xvid_plg_destroy; + + xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, &xvid_plg_destroy, NULL); +} + |