FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/hap.c
Date: 2021-09-26 18:22:30
Exec Total Coverage
Lines: 24 29 82.8%
Branches: 13 20 65.0%

Line Branch Exec Source
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 18 int ff_hap_set_chunk_count(HapContext *ctx, int count, int first_in_frame)
29 {
30 18 int ret = 0;
31
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27 if (first_in_frame == 1 && ctx->chunk_count != count) {
32 9 int ret = av_reallocp_array(&ctx->chunks, count, sizeof(HapChunk));
33
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9 if (ret == 0)
34 9 ret = av_reallocp_array(&ctx->chunk_results, count, sizeof(int));
35
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9 if (ret < 0) {
36 ctx->chunk_count = 0;
37 } else {
38 9 ctx->chunk_count = count;
39 }
40
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9 } 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 ret = AVERROR_INVALIDDATA;
46 }
47 18 return ret;
48 }
49
50 28 av_cold void ff_hap_free_context(HapContext *ctx)
51 {
52 28 av_freep(&ctx->tex_buf);
53 28 av_freep(&ctx->chunks);
54 28 av_freep(&ctx->chunk_results);
55 28 }
56
57 48 int ff_hap_parse_section_header(GetByteContext *gbc, int *section_size,
58 enum HapSectionType *section_type)
59 {
60
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48 if (bytestream2_get_bytes_left(gbc) < 4)
61 return AVERROR_INVALIDDATA;
62
63 48 *section_size = bytestream2_get_le24(gbc);
64 48 *section_type = bytestream2_get_byte(gbc);
65
66
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48 if (*section_size == 0) {
67
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4 if (bytestream2_get_bytes_left(gbc) < 4)
68 return AVERROR_INVALIDDATA;
69
70 4 *section_size = bytestream2_get_le32(gbc);
71 }
72
73
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48 if (*section_size > bytestream2_get_bytes_left(gbc) || *section_size < 0)
74 return AVERROR_INVALIDDATA;
75 else
76 48 return 0;
77 }
78