0,0 → 1,66 |
/* |
* 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 "avformat.h" |
#include "rawdec.h" |
|
#include "libavcodec/hevc.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; |
} |
} |
} |
|
// printf("vps=%d, sps=%d, pps=%d, irap=%d\n", vps, sps, pps, irap); |
|
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) |