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/* |
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* Xvid rate control wrapper for lavc video encoders |
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*
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
* |
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* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* 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 |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
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#include "config.h" |
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#include <xvid.h>
#include <unistd.h> |
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#include "libavutil/attributes.h" |
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#include "libavutil/file.h" |
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#include "avcodec.h" |
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#include "libxvid.h" |
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#include "mpegvideo.h"
#undef NDEBUG
#include <assert.h>
|
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av_cold int ff_xvid_rate_control_init(MpegEncContext *s)
{ |
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char *tmp_name;
int fd, i; |
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xvid_plg_create_t xvid_plg_create = { 0 };
xvid_plugin_2pass2_t xvid_2pass2 = { 0 }; |
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|
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fd=av_tempfile("xvidrc.", &tmp_name, 0, s->avctx); |
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if (fd == -1) {
av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n");
return -1; |
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}
|
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for(i=0; i<s->rc_context.num_entries; i++){ |
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static const char frame_types[] = " ipbs"; |
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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, |
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rce->skip_count, (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits+7)/8, (rce->header_bits+rce->mv_bits+7)/8); |
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|
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if (write(fd, tmp, strlen(tmp)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Error %s writing 2pass logfile\n", strerror(errno)); |
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av_free(tmp_name);
close(fd); |
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return AVERROR(errno);
} |
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}
close(fd);
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;
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;
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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; |
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}
float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run){ |
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xvid_plg_data_t xvid_plg_data = { 0 }; |
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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 |
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xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset;
xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor; |
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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; |
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xvid_plg_data.frame_num= s->rc_context.last_picture_number; |
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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;
}
} |
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s->rc_context.last_picture_number= |
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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;
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if(s->pict_type == AV_PICTURE_TYPE_B) //FIXME this is not exactly identical to xvid |
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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; |
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}
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av_cold void ff_xvid_rate_control_uninit(MpegEncContext *s)
{ |
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xvid_plg_destroy_t xvid_plg_destroy;
xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, &xvid_plg_destroy, NULL);
} |