mirror of https://git.ffmpeg.org/ffmpeg.git
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*
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* RAW H.265 video demuxer
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* Copyright (c) 2013 Dirk Farin <dirk.farin@gmail.com>
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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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#include "avformat.h"
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#include "rawdec.h"
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static int h265_probe(AVProbeData *p)
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{
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uint32_t code= -1;
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int vps=0, sps=0, pps=0, idr=0;
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int i;
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for(i=0; i<p->buf_size-1; i++){
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code = (code<<8) + p->buf[i];
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if ((code & 0xffffff00) == 0x100) {
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uint8_t nal2 = p->buf[i+1];
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int type = (code & 0x7E)>>1;
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if (code & 0x81) // forbidden and reserved zero bits
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return 0;
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if (nal2 & 0xf8) // reserved zero
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return 0;
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switch (type) {
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case 32: vps++; break;
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case 33: sps++; break;
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case 34: pps++; break;
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case 19:
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case 20: idr++; break;
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}
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}
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}
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// printf("vps=%d, sps=%d, pps=%d, idr=%d\n", vps, sps, pps, idr);
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if (vps && sps && pps && idr)
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return AVPROBE_SCORE_EXTENSION + 1; // 1 more than .mpg
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return 0;
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}
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FF_DEF_RAWVIDEO_DEMUXER(h265 , "raw H.265 video", h265_probe, "h265,265,hevc", AV_CODEC_ID_H265)
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