FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/fsb.c
Date: 2026-04-24 19:58:39
Exec Total Coverage
Lines: 3 124 2.4%
Functions: 1 3 33.3%
Branches: 1 70 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 "demux.h"
27 #include "internal.h"
28
29 7480 static int fsb_probe(const AVProbeData *p)
30 {
31
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 7480 if (memcmp(p->buf, "FSB", 3) || p->buf[3] - '0' < 1 || p->buf[3] - '0' > 5)
32 7480 return 0;
33 ✗ if (AV_RL32(p->buf + 4) != 1)
34 ✗ return 0;
35 ✗ return AVPROBE_SCORE_MAX;
36 }
37
38 ✗ static int fsb_read_header(AVFormatContext *s)
39 {
40 ✗ AVIOContext *pb = s->pb;
41 unsigned format, version, c;
42 int64_t offset;
43 AVCodecParameters *par;
44 ✗ AVStream *st = avformat_new_stream(s, NULL);
45 int ret;
46
47 ✗ avio_skip(pb, 3); // "FSB"
48 ✗ version = avio_r8(pb) - '0';
49 ✗ if (version != 4 && version != 3) {
50 ✗ avpriv_request_sample(s, "version %d", version);
51 ✗ return AVERROR_PATCHWELCOME;
52 }
53
54 ✗ avio_skip(pb, 4);
55
56 ✗ if (!st)
57 ✗ return AVERROR(ENOMEM);
58 ✗ par = st->codecpar;
59 ✗ par->codec_type = AVMEDIA_TYPE_AUDIO;
60 ✗ par->codec_tag = 0;
61
62 ✗ if (version == 3) {
63 ✗ offset = avio_rl32(pb) + 0x18;
64 ✗ avio_skip(pb, 44);
65 ✗ st->duration = avio_rl32(pb);
66 ✗ avio_skip(pb, 12);
67 ✗ format = avio_rl32(pb);
68 ✗ par->sample_rate = avio_rl32(pb);
69 ✗ if (par->sample_rate <= 0)
70 ✗ return AVERROR_INVALIDDATA;
71 ✗ avio_skip(pb, 6);
72 ✗ par->ch_layout.nb_channels = avio_rl16(pb);
73 ✗ if (!par->ch_layout.nb_channels)
74 ✗ return AVERROR_INVALIDDATA;
75
76 ✗ if (format & 0x00000100) {
77 ✗ par->codec_id = AV_CODEC_ID_PCM_S16LE;
78 ✗ par->block_align = 4096 * par->ch_layout.nb_channels;
79 ✗ } else if (format & 0x00400000) {
80 ✗ par->bits_per_coded_sample = 4;
81 ✗ par->codec_id = AV_CODEC_ID_ADPCM_IMA_WAV;
82 ✗ par->block_align = 36 * par->ch_layout.nb_channels;
83 ✗ } else if (format & 0x00800000) {
84 ✗ par->codec_id = AV_CODEC_ID_ADPCM_PSX;
85 ✗ par->block_align = 16 * par->ch_layout.nb_channels;
86 ✗ } else if (format & 0x02000000) {
87 ✗ par->codec_id = AV_CODEC_ID_ADPCM_THP;
88 ✗ par->block_align = 8 * par->ch_layout.nb_channels;
89 ✗ if (par->ch_layout.nb_channels > INT_MAX / 32)
90 ✗ return AVERROR_INVALIDDATA;
91 ✗ ret = ff_alloc_extradata(par, 32 * par->ch_layout.nb_channels);
92 ✗ if (ret < 0)
93 ✗ return ret;
94 ✗ avio_seek(pb, 0x68, SEEK_SET);
95 ✗ for (c = 0; c < par->ch_layout.nb_channels; c++) {
96 ✗ avio_read(pb, par->extradata + 32 * c, 32);
97 ✗ avio_skip(pb, 14);
98 }
99 } else {
100 ✗ avpriv_request_sample(s, "format 0x%X", format);
101 ✗ return AVERROR_PATCHWELCOME;
102 }
103 ✗ } else if (version == 4) {
104 ✗ offset = avio_rl32(pb) + 0x30;
105 ✗ avio_skip(pb, 80);
106 ✗ st->duration = avio_rl32(pb);
107
108 ✗ format = avio_rb32(pb);
109 ✗ switch(format) {
110 ✗ case 0x40001001:
111 case 0x00001005:
112 case 0x40001081:
113 case 0x40200001:
114 ✗ par->codec_id = AV_CODEC_ID_XMA2;
115 ✗ break;
116 ✗ case 0x40000802:
117 ✗ par->codec_id = AV_CODEC_ID_ADPCM_THP;
118 ✗ break;
119 ✗ default:
120 ✗ avpriv_request_sample(s, "format 0x%X", format);
121 ✗ return AVERROR_PATCHWELCOME;
122 }
123
124 ✗ par->sample_rate = avio_rl32(pb);
125 ✗ if (par->sample_rate <= 0)
126 ✗ return AVERROR_INVALIDDATA;
127 ✗ avio_skip(pb, 6);
128
129 ✗ par->ch_layout.nb_channels = avio_rl16(pb);
130 ✗ if (!par->ch_layout.nb_channels)
131 ✗ return AVERROR_INVALIDDATA;
132
133 ✗ switch (par->codec_id) {
134 ✗ case AV_CODEC_ID_XMA2:
135 ✗ ret = ff_alloc_extradata(par, 34);
136 ✗ if (ret < 0)
137 ✗ return ret;
138 ✗ memset(par->extradata, 0, 34);
139 ✗ par->block_align = 2048;
140 ✗ break;
141 ✗ case AV_CODEC_ID_ADPCM_THP:
142 ✗ if (par->ch_layout.nb_channels > INT_MAX / 32)
143 ✗ return AVERROR_INVALIDDATA;
144 ✗ ret = ff_alloc_extradata(par, 32 * par->ch_layout.nb_channels);
145 ✗ if (ret < 0)
146 ✗ return ret;
147 ✗ avio_seek(pb, 0x80, SEEK_SET);
148 ✗ for (c = 0; c < par->ch_layout.nb_channels; c++) {
149 ✗ avio_read(pb, par->extradata + 32 * c, 32);
150 ✗ avio_skip(pb, 14);
151 }
152 ✗ par->block_align = 8 * par->ch_layout.nb_channels;
153 ✗ break;
154 }
155 } else {
156 ✗ av_assert0(0);
157 }
158
159 ✗ avio_skip(pb, offset - avio_tell(pb));
160
161 ✗ avpriv_set_pts_info(st, 64, 1, par->sample_rate);
162
163 ✗ return 0;
164 }
165
166 ✗ static int fsb_read_packet(AVFormatContext *s, AVPacket *pkt)
167 {
168 ✗ AVCodecParameters *par = s->streams[0]->codecpar;
169 int64_t pos;
170 int ret;
171
172 ✗ if (avio_feof(s->pb))
173 ✗ return AVERROR_EOF;
174
175 ✗ pos = avio_tell(s->pb);
176 ✗ if (par->codec_id == AV_CODEC_ID_ADPCM_THP &&
177 ✗ par->ch_layout.nb_channels > 1) {
178 int i, ch;
179
180 ✗ ret = av_new_packet(pkt, par->block_align);
181 ✗ if (ret < 0)
182 ✗ return ret;
183 ✗ for (i = 0; i < 4; i++) {
184 ✗ for (ch = 0; ch < par->ch_layout.nb_channels; ch++) {
185 ✗ pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
186 ✗ pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
187 }
188 }
189 ✗ ret = 0;
190 } else {
191 ✗ ret = av_get_packet(s->pb, pkt, par->block_align);
192 }
193
194 ✗ if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
195 ✗ pkt->duration = (pkt->data[0] >> 2) * 512;
196
197 ✗ pkt->pos = pos;
198 ✗ pkt->stream_index = 0;
199
200 ✗ return ret;
201 }
202
203 const FFInputFormat ff_fsb_demuxer = {
204 .p.name = "fsb",
205 .p.long_name = NULL_IF_CONFIG_SMALL("FMOD Sample Bank"),
206 .p.extensions = "fsb",
207 .p.flags = AVFMT_GENERIC_INDEX,
208 .read_probe = fsb_probe,
209 .read_header = fsb_read_header,
210 .read_packet = fsb_read_packet,
211 };
212