/src/ffmpeg/libavcodec/hap.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Vidvox Hap utility functions |
3 | | * Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com> |
4 | | * |
5 | | * This file is part of FFmpeg. |
6 | | * |
7 | | * FFmpeg is free software; you can redistribute it and/or |
8 | | * modify it under the terms of the GNU Lesser General Public |
9 | | * License as published by the Free Software Foundation; either |
10 | | * version 2.1 of the License, or (at your option) any later version. |
11 | | * |
12 | | * FFmpeg is distributed in the hope that it will be useful, |
13 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | | * Lesser General Public License for more details. |
16 | | * |
17 | | * You should have received a copy of the GNU Lesser General Public |
18 | | * License along with FFmpeg; if not, write to the Free Software |
19 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | | */ |
21 | | |
22 | | /** |
23 | | * @file |
24 | | * Hap utilities |
25 | | */ |
26 | | #include "hap.h" |
27 | | |
28 | | int ff_hap_set_chunk_count(HapContext *ctx, int count, int first_in_frame) |
29 | 0 | { |
30 | 0 | int ret = 0; |
31 | 0 | if (first_in_frame == 1 && ctx->chunk_count != count) { |
32 | 0 | int ret = av_reallocp_array(&ctx->chunks, count, sizeof(HapChunk)); |
33 | 0 | if (ret == 0) |
34 | 0 | ret = av_reallocp_array(&ctx->chunk_results, count, sizeof(int)); |
35 | 0 | if (ret < 0) { |
36 | 0 | ctx->chunk_count = 0; |
37 | 0 | } else { |
38 | 0 | ctx->chunk_count = count; |
39 | 0 | } |
40 | 0 | } else if (ctx->chunk_count != count) { |
41 | | /* If this is not the first chunk count calculated for a frame and a |
42 | | * different count has already been encountered, then reject the frame: |
43 | | * each table in the Decode Instructions Container must describe the |
44 | | * same number of chunks. */ |
45 | 0 | ret = AVERROR_INVALIDDATA; |
46 | 0 | } |
47 | 0 | return ret; |
48 | 0 | } |
49 | | |
50 | | av_cold void ff_hap_free_context(HapContext *ctx) |
51 | 0 | { |
52 | 0 | av_freep(&ctx->tex_buf); |
53 | 0 | av_freep(&ctx->chunks); |
54 | 0 | av_freep(&ctx->chunk_results); |
55 | 0 | } |
56 | | |
57 | | int ff_hap_parse_section_header(GetByteContext *gbc, int *section_size, |
58 | | enum HapSectionType *section_type) |
59 | 0 | { |
60 | 0 | if (bytestream2_get_bytes_left(gbc) < 4) |
61 | 0 | return AVERROR_INVALIDDATA; |
62 | | |
63 | 0 | *section_size = bytestream2_get_le24(gbc); |
64 | 0 | *section_type = bytestream2_get_byte(gbc); |
65 | |
|
66 | 0 | if (*section_size == 0) { |
67 | 0 | if (bytestream2_get_bytes_left(gbc) < 4) |
68 | 0 | return AVERROR_INVALIDDATA; |
69 | | |
70 | 0 | *section_size = bytestream2_get_le32(gbc); |
71 | 0 | } |
72 | | |
73 | 0 | if (*section_size > bytestream2_get_bytes_left(gbc) || *section_size < 0) |
74 | 0 | return AVERROR_INVALIDDATA; |
75 | 0 | else |
76 | 0 | return 0; |
77 | 0 | } |