diff options
Diffstat (limited to 'libavcodec/hap.c')
| -rw-r--r-- | libavcodec/hap.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/libavcodec/hap.c b/libavcodec/hap.c index 770142c..1a330c9 100644 --- a/libavcodec/hap.c +++ b/libavcodec/hap.c @@ -2,20 +2,20 @@ * Vidvox Hap utility functions * Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -53,3 +53,25 @@ av_cold void ff_hap_free_context(HapContext *ctx) av_freep(&ctx->chunks); av_freep(&ctx->chunk_results); } + +int ff_hap_parse_section_header(GetByteContext *gbc, int *section_size, + enum HapSectionType *section_type) +{ + if (bytestream2_get_bytes_left(gbc) < 4) + return AVERROR_INVALIDDATA; + + *section_size = bytestream2_get_le24(gbc); + *section_type = bytestream2_get_byte(gbc); + + if (*section_size == 0) { + if (bytestream2_get_bytes_left(gbc) < 4) + return AVERROR_INVALIDDATA; + + *section_size = bytestream2_get_le32(gbc); + } + + if (*section_size > bytestream2_get_bytes_left(gbc) || *section_size < 0) + return AVERROR_INVALIDDATA; + else + return 0; +} |
