/* * RAW HEVC video demuxer * Copyright (c) 2013 Dirk Farin <dirk.farin@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/hevc.h" #include "avformat.h" #include "rawdec.h" static int hevc_probe(AVProbeData *p) { uint32_t code = -1; int vps = 0, 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 = (code & 0x7E) >> 1; if (code & 0x81) // forbidden and reserved zero bits return 0; if (nal2 & 0xf8) // reserved zero return 0; switch (type) { case NAL_VPS: vps++; break; case NAL_SPS: sps++; break; case NAL_PPS: pps++; break; case NAL_BLA_N_LP: case NAL_BLA_W_LP: case NAL_BLA_W_RADL: case NAL_CRA_NUT: case NAL_IDR_N_LP: case NAL_IDR_W_RADL: irap++; break; } } } if (vps && sps && pps && irap) return AVPROBE_SCORE_EXTENSION + 1; // 1 more than .mpg return 0; } FF_DEF_RAWVIDEO_DEMUXER(hevc, "raw HEVC video", hevc_probe, "hevc,h265,265", AV_CODEC_ID_HEVC)