FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/fsb.c
Date: 2026-08-31 17:12:07
Exec Total Coverage
Lines: 3 128 2.3%
Functions: 1 3 33.3%
Branches: 1 74 1.4%
Line Branch Exec Source
1 /*
2 * FSB demuxer
3 * Copyright (c) 2015 Paul B Mahol
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 #include "libavutil/avassert.h"
23 #include "libavutil/intreadwrite.h"
24 #include "avformat.h"
25 #include "avio.h"
26 #include "avio_internal.h"
27 #include "demux.h"
28 #include "internal.h"
29
30 7957 static int fsb_probe(const AVProbeData *p)
31 {
32
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 7957 if (memcmp(p->buf, "FSB", 3) || p->buf[3] - '0' < 1 || p->buf[3] - '0' > 5)
33 7957 return 0;
34 ✗ if (AV_RL32(p->buf + 4) != 1)
35 ✗ return 0;
36 ✗ return AVPROBE_SCORE_MAX;
37 }
38
39 ✗ static int fsb_read_header(AVFormatContext *s)
40 {
41 ✗ AVIOContext *pb = s->pb;
42 unsigned format, version, c;
43 int64_t offset;
44 AVCodecParameters *par;
45 ✗ AVStream *st = avformat_new_stream(s, NULL);
46 int ret;
47
48 ✗ avio_skip(pb, 3); // "FSB"
49 ✗ version = avio_r8(pb) - '0';
50 ✗ if (version != 4 && version != 3) {
51 ✗ avpriv_request_sample(s, "version %d", version);
52 ✗ return AVERROR_PATCHWELCOME;
53 }
54
55 ✗ avio_skip(pb, 4);
56
57 ✗ if (!st)
58 ✗ return AVERROR(ENOMEM);
59 ✗ par = st->codecpar;
60 ✗ par->codec_type = AVMEDIA_TYPE_AUDIO;
61 ✗ par->codec_tag = 0;
62
63 ✗ if (version == 3) {
64 ✗ offset = avio_rl32(pb) + 0x18;
65 ✗ avio_skip(pb, 44);
66 ✗ st->duration = avio_rl32(pb);
67 ✗ avio_skip(pb, 12);
68 ✗ format = avio_rl32(pb);
69 ✗ par->sample_rate = avio_rl32(pb);
70 ✗ if (par->sample_rate <= 0)
71 ✗ return AVERROR_INVALIDDATA;
72 ✗ avio_skip(pb, 6);
73 ✗ par->ch_layout.nb_channels = avio_rl16(pb);
74 ✗ if (!par->ch_layout.nb_channels)
75 ✗ return AVERROR_INVALIDDATA;
76
77 ✗ if (format & 0x00000100) {
78 ✗ par->codec_id = AV_CODEC_ID_PCM_S16LE;
79 ✗ par->block_align = 4096 * par->ch_layout.nb_channels;
80 ✗ } else if (format & 0x00400000) {
81 ✗ par->bits_per_coded_sample = 4;
82 ✗ par->codec_id = AV_CODEC_ID_ADPCM_IMA_WAV;
83 ✗ par->block_align = 36 * par->ch_layout.nb_channels;
84 ✗ } else if (format & 0x00800000) {
85 ✗ par->codec_id = AV_CODEC_ID_ADPCM_PSX;
86 ✗ par->block_align = 16 * par->ch_layout.nb_channels;
87 ✗ } else if (format & 0x02000000) {
88 ✗ par->codec_id = AV_CODEC_ID_ADPCM_THP;
89 ✗ par->block_align = 8 * par->ch_layout.nb_channels;
90 ✗ if (par->ch_layout.nb_channels > INT_MAX / 32)
91 ✗ return AVERROR_INVALIDDATA;
92 ✗ ret = ff_alloc_extradata(par, 32 * par->ch_layout.nb_channels);
93 ✗ if (ret < 0)
94 ✗ return ret;
95 ✗ avio_seek(pb, 0x68, SEEK_SET);
96 ✗ for (c = 0; c < par->ch_layout.nb_channels; c++) {
97 ✗ ret = ffio_read_size(pb, par->extradata + 32 * c, 32);
98 ✗ if (ret < 0)
99 ✗ return ret;
100 ✗ avio_skip(pb, 14);
101 }
102 } else {
103 ✗ avpriv_request_sample(s, "format 0x%X", format);
104 ✗ return AVERROR_PATCHWELCOME;
105 }
106 ✗ } else if (version == 4) {
107 ✗ offset = avio_rl32(pb) + 0x30;
108 ✗ avio_skip(pb, 80);
109 ✗ st->duration = avio_rl32(pb);
110
111 ✗ format = avio_rb32(pb);
112 ✗ switch(format) {
113 ✗ case 0x40001001:
114 case 0x00001005:
115 case 0x40001081:
116 case 0x40200001:
117 ✗ par->codec_id = AV_CODEC_ID_XMA2;
118 ✗ break;
119 ✗ case 0x40000802:
120 ✗ par->codec_id = AV_CODEC_ID_ADPCM_THP;
121 ✗ break;
122 ✗ default:
123 ✗ avpriv_request_sample(s, "format 0x%X", format);
124 ✗ return AVERROR_PATCHWELCOME;
125 }
126
127 ✗ par->sample_rate = avio_rl32(pb);
128 ✗ if (par->sample_rate <= 0)
129 ✗ return AVERROR_INVALIDDATA;
130 ✗ avio_skip(pb, 6);
131
132 ✗ par->ch_layout.nb_channels = avio_rl16(pb);
133 ✗ if (!par->ch_layout.nb_channels)
134 ✗ return AVERROR_INVALIDDATA;
135
136 ✗ switch (par->codec_id) {
137 ✗ case AV_CODEC_ID_XMA2:
138 ✗ ret = ff_alloc_extradata(par, 34);
139 ✗ if (ret < 0)
140 ✗ return ret;
141 ✗ memset(par->extradata, 0, 34);
142 ✗ par->block_align = 2048;
143 ✗ break;
144 ✗ case AV_CODEC_ID_ADPCM_THP:
145 ✗ if (par->ch_layout.nb_channels > INT_MAX / 32)
146 ✗ return AVERROR_INVALIDDATA;
147 ✗ ret = ff_alloc_extradata(par, 32 * par->ch_layout.nb_channels);
148 ✗ if (ret < 0)
149 ✗ return ret;
150 ✗ avio_seek(pb, 0x80, SEEK_SET);
151 ✗ for (c = 0; c < par->ch_layout.nb_channels; c++) {
152 ✗ ret = ffio_read_size(pb, par->extradata + 32 * c, 32);
153 ✗ if (ret < 0)
154 ✗ return ret;
155 ✗ avio_skip(pb, 14);
156 }
157 ✗ par->block_align = 8 * par->ch_layout.nb_channels;
158 ✗ break;
159 }
160 } else {
161 ✗ av_assert0(0);
162 }
163
164 ✗ avio_skip(pb, offset - avio_tell(pb));
165
166 ✗ avpriv_set_pts_info(st, 64, 1, par->sample_rate);
167
168 ✗ return 0;
169 }
170
171 ✗ static int fsb_read_packet(AVFormatContext *s, AVPacket *pkt)
172 {
173 ✗ AVCodecParameters *par = s->streams[0]->codecpar;
174 int64_t pos;
175 int ret;
176
177 ✗ if (avio_feof(s->pb))
178 ✗ return AVERROR_EOF;
179
180 ✗ pos = avio_tell(s->pb);
181 ✗ if (par->codec_id == AV_CODEC_ID_ADPCM_THP &&
182 ✗ par->ch_layout.nb_channels > 1) {
183 int i, ch;
184
185 ✗ ret = av_new_packet(pkt, par->block_align);
186 ✗ if (ret < 0)
187 ✗ return ret;
188 ✗ for (i = 0; i < 4; i++) {
189 ✗ for (ch = 0; ch < par->ch_layout.nb_channels; ch++) {
190 ✗ pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
191 ✗ pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
192 }
193 }
194 ✗ ret = 0;
195 } else {
196 ✗ ret = av_get_packet(s->pb, pkt, par->block_align);
197 }
198
199 ✗ if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
200 ✗ pkt->duration = (pkt->data[0] >> 2) * 512;
201
202 ✗ pkt->pos = pos;
203 ✗ pkt->stream_index = 0;
204
205 ✗ return ret;
206 }
207
208 const FFInputFormat ff_fsb_demuxer = {
209 .p.name = "fsb",
210 .p.long_name = NULL_IF_CONFIG_SMALL("FMOD Sample Bank"),
211 .p.extensions = "fsb",
212 .p.flags = AVFMT_GENERIC_INDEX,
213 .read_probe = fsb_probe,
214 .read_header = fsb_read_header,
215 .read_packet = fsb_read_packet,
216 };
217