--- libavformat/Makefile | 1 + libavformat/allformats.c | 1 + libavformat/h266dec.c | 61 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 63 insertions(+) create mode 100644 libavformat/h266dec.c
diff --git a/libavformat/Makefile b/libavformat/Makefile index 97d868081b..c685aad66e 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -231,6 +231,7 @@ OBJS-$(CONFIG_H263_DEMUXER) += h263dec.o rawdec.o OBJS-$(CONFIG_H263_MUXER) += rawenc.o OBJS-$(CONFIG_H264_DEMUXER) += h264dec.o rawdec.o OBJS-$(CONFIG_H264_MUXER) += rawenc.o +OBJS-$(CONFIG_H266_DEMUXER) += h266dec.o rawdec.o OBJS-$(CONFIG_HASH_MUXER) += hashenc.o OBJS-$(CONFIG_HCA_DEMUXER) += hca.o OBJS-$(CONFIG_HCOM_DEMUXER) += hcom.o pcm.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 0e0caaad39..8b64b4eb4b 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -189,6 +189,7 @@ extern AVInputFormat ff_h263_demuxer; extern AVOutputFormat ff_h263_muxer; extern AVInputFormat ff_h264_demuxer; extern AVOutputFormat ff_h264_muxer; +extern AVInputFormat ff_h266_demuxer; extern AVOutputFormat ff_hash_muxer; extern AVInputFormat ff_hca_demuxer; extern AVInputFormat ff_hcom_demuxer; diff --git a/libavformat/h266dec.c b/libavformat/h266dec.c new file mode 100644 index 0000000000..bf0de5b829 --- /dev/null +++ b/libavformat/h266dec.c @@ -0,0 +1,61 @@ +/* + * RAW H266 video demuxer + * Copyright (c) 2020 Nuo Mi <nuomi2...@gmail.com> + * + * 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 "libavcodec/h266.h" + +#include "avformat.h" +#include "rawdec.h" + +static int h266_probe(const AVProbeData *p) +{ + uint32_t code = -1; + int sps = 0, pps = 0, irap = 0; + int i; + + for (i = 0; i < p->buf_size - 1; i++) { + code = (code << 8) + p->buf[i]; + if ((code & 0xffffff00) == 0x100) { + uint8_t nal2 = p->buf[i + 1]; + int type = (nal2 & 0xF8) >> 3; + + if (code & 0xc0) // forbidden_zero_bit and nuh_reserved_zero_bit + return 0; + + if ((nal2 & 0x7) == 0) // nuh_temporal_id_plus1 + return 0; + + switch (type) { + case H266_NAL_SPS: sps++; break; + case H266_NAL_PPS: pps++; break; + case H266_NAL_IDR_N_LP: + case H266_NAL_IDR_W_RADL: + case H266_NAL_CRA_NUT: + case H266_NAL_GDR_NUT: irap++; break; + } + } + } + + if (sps && pps && irap) + return AVPROBE_SCORE_EXTENSION + 1; // 1 more than .mpg + return 0; +} + +FF_DEF_RAWVIDEO_DEMUXER(h266, "raw H266 video", h266_probe, "h266,266,vvc", AV_CODEC_ID_H266) -- 2.25.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".