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703288cec6
I went through all codecs and put them into five basic categories:
1. JPEG range only
2. MPEG range only
3. Explicitly tagged
4. Broken (codec supports both but encoder ignores tags)
5. N/A (headerless or pseudo-formats)
Filters in category 5 remain untouched. The rest gain an explicit
assignment of their supported color ranges, with codecs in category
4 being set to MPEG-only for safety.
It might be considered redundant to distinguish between 0 (category 5)
and MPEG+JPEG (category 3), but in doing so we effectively communicate
that we can guarantee that these tags will be encoded, which is distinct
from the situation where there are some codecs that simply don't have
tagging or implied semantics (e.g. rawvideo).
A full list of codecs follows:
JPEG range only:
- amv
- roqvideo
MPEG range only:
- asv1, asv2
- avui
- cfhd
- cljr
- dnxhd
- dvvideo
- ffv1
- flv
- h261, h263, h263p
- {h263,vp8}_v4l2m2m
- huffyuv, ffvhuff
- jpeg2000
- libopenjpeg
- libtheora
- libwebp, libwebp_anim
- libx262
- libxavs, libxavs2
- libxvid
- mpeg1video, mpeg2video
- mpeg2_qsv
- mpeg2_vaapi
- mpeg4, msmpeg4, msmpeg4v2, wmv1, wmv2
- mpeg4_omx
- prores, prores_aw, prores_ks
- rv10, rv20
- snow
- speedhq
- svq1
- tiff
- utvideo
Explicitly tagged (MPEG/JPEG):
- {av1,h264,hevc}_nvenc
- {av1,h264,hevc}_vaapi
- {av1,h264,hevc,vp8,vp9,mpeg4}_mediacodec
- {av1,h264,hevc,vp9}_qsv
- h264_amf
- {h264,hevc,prores}_videotoolbox
- libaom-av1
- libkvazaar
- libopenh264
- librav1e
- libsvtav1
- libvpx, libvpx-vp9
- libx264
- libx265
- ljpeg
- mjpeg
- vc2
Broken (encoder ignores tags):
- {av1,hevc}_amf
- {h264,hevc,mpeg4}_v4l2m2m
- h264_omx
- libxeve
- magicyuv
- {vp8,vp9,mjpeg}_vaapi
N/A:
- ayuv, yuv4, y41p, v308, v210, v410, v408 (headerless)
- pgmyuv (headerless)
- rawvideo, bitpacked (headerless)
- vnull, wrapped_avframe (pseudocodecs)
80 lines
2.5 KiB
C
80 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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.color_ranges = AVCOL_RANGE_MPEG,
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};
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