1/* 2 * RV20 encoder 3 * Copyright (c) 2000,2001 Fabrice Bellard 4 * Copyright (c) 2002-2004 Michael Niedermayer 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/** 24 * @file 25 * RV20 encoder 26 */ 27 28#include "codec_internal.h" 29#include "mpegvideo.h" 30#include "mpegvideodata.h" 31#include "mpegvideoenc.h" 32#include "h263data.h" 33#include "h263enc.h" 34#include "put_bits.h" 35#include "rv10enc.h" 36 37void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){ 38 put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ? 39 put_bits(&s->pb, 1, 0); /* unknown bit */ 40 put_bits(&s->pb, 5, s->qscale); 41 42 put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known 43 s->mb_x= s->mb_y= 0; 44 ff_h263_encode_mba(s); 45 46 put_bits(&s->pb, 1, s->no_rounding); 47 48 av_assert0(s->f_code == 1); 49 av_assert0(s->unrestricted_mv == 0); 50 av_assert0(s->alt_inter_vlc == 0); 51 av_assert0(s->umvplus == 0); 52 av_assert0(s->modified_quant==1); 53 av_assert0(s->loop_filter==1); 54 55 s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I; 56 if(s->h263_aic){ 57 s->y_dc_scale_table= 58 s->c_dc_scale_table= ff_aic_dc_scale_table; 59 }else{ 60 s->y_dc_scale_table= 61 s->c_dc_scale_table= ff_mpeg1_dc_scale_table; 62 } 63} 64 65const FFCodec ff_rv20_encoder = { 66 .p.name = "rv20", 67 .p.long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"), 68 .p.type = AVMEDIA_TYPE_VIDEO, 69 .p.id = AV_CODEC_ID_RV20, 70 .p.priv_class = &ff_mpv_enc_class, 71 .priv_data_size = sizeof(MpegEncContext), 72 .init = ff_mpv_encode_init, 73 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture), 74 .close = ff_mpv_encode_end, 75 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, 76 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, 77}; 78