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79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/*
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* RV20 encoder
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* Copyright (c) 2000,2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* 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
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* 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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* 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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*/
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/**
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* @file
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* RV20 encoder
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*/
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#include "codec_internal.h"
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#include "mpegvideo.h"
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#include "mpegvideodata.h"
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#include "mpegvideoenc.h"
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#include "h263data.h"
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#include "h263enc.h"
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#include "put_bits.h"
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#include "rv10enc.h"
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void ff_rv20_encode_picture_header(MpegEncContext *s) {
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put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
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put_bits(&s->pb, 1, 0); /* unknown bit */
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put_bits(&s->pb, 5, s->qscale);
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put_sbits(&s->pb, 8, s->picture_number); //FIXME wrong, but correct is not known
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s->mb_x= s->mb_y= 0;
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ff_h263_encode_mba(s);
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put_bits(&s->pb, 1, s->no_rounding);
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av_assert0(s->f_code == 1);
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av_assert0(s->unrestricted_mv == 0);
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av_assert0(s->alt_inter_vlc == 0);
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av_assert0(s->umvplus == 0);
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av_assert0(s->modified_quant==1);
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av_assert0(s->loop_filter==1);
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s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I;
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if(s->h263_aic){
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s->y_dc_scale_table=
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s->c_dc_scale_table= ff_aic_dc_scale_table;
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}else{
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s->y_dc_scale_table=
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s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
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}
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}
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const FFCodec ff_rv20_encoder = {
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.p.name = "rv20",
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CODEC_LONG_NAME("RealVideo 2.0"),
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_RV20,
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.p.priv_class = &ff_mpv_enc_class,
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.p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
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.priv_data_size = sizeof(MpegEncContext),
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.init = ff_mpv_encode_init,
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FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
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.close = ff_mpv_encode_end,
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.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
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.p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
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};
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