FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/rsd.c
Date: 2026-04-28 12:28:21
Exec Total Coverage
Lines: 61 123 49.6%
Functions: 3 3 100.0%
Branches: 31 88 35.2%
Line Branch Exec Source
1 /*
2 * RSD demuxer
3 * Copyright (c) 2013 James Almer
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/intreadwrite.h"
23 #include "avformat.h"
24 #include "avio.h"
25 #include "avio_internal.h"
26 #include "demux.h"
27 #include "internal.h"
28
29 static const AVCodecTag rsd_tags[] = {
30 { AV_CODEC_ID_ADPCM_PSX, MKTAG('V','A','G',' ') },
31 { AV_CODEC_ID_ADPCM_THP_LE, MKTAG('G','A','D','P') },
32 { AV_CODEC_ID_ADPCM_THP, MKTAG('W','A','D','P') },
33 { AV_CODEC_ID_ADPCM_IMA_RAD, MKTAG('R','A','D','P') },
34 { AV_CODEC_ID_ADPCM_IMA_WAV, MKTAG('X','A','D','P') },
35 { AV_CODEC_ID_PCM_S16BE, MKTAG('P','C','M','B') },
36 { AV_CODEC_ID_PCM_S16LE, MKTAG('P','C','M',' ') },
37 { AV_CODEC_ID_XMA2, MKTAG('X','M','A',' ') },
38 { AV_CODEC_ID_NONE, 0 },
39 };
40
41 static const uint32_t rsd_unsupported_tags[] = {
42 MKTAG('O','G','G',' '),
43 };
44
45 7480 static int rsd_probe(const AVProbeData *p)
46 {
47
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 7480 if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6)
48 7478 return 0;
49
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 2 if (AV_RL32(p->buf + 8) > 256 || !AV_RL32(p->buf + 8))
50 ✗ return AVPROBE_SCORE_MAX / 8;
51
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 2 if (AV_RL32(p->buf + 16) > 8*48000 || !AV_RL32(p->buf + 16))
52 ✗ return AVPROBE_SCORE_MAX / 8;
53 2 return AVPROBE_SCORE_MAX;
54 }
55
56 2 static int rsd_read_header(AVFormatContext *s)
57 {
58 2 AVIOContext *pb = s->pb;
59 2 int i, ret, version, start = 0x800;
60 AVCodecParameters *par;
61 2 AVStream *st = avformat_new_stream(s, NULL);
62
63
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 2 if (!st)
64 ✗ return AVERROR(ENOMEM);
65
66 2 avio_skip(pb, 3); // "RSD"
67 2 version = avio_r8(pb) - '0';
68
69 2 par = st->codecpar;
70 2 par->codec_type = AVMEDIA_TYPE_AUDIO;
71 2 par->codec_tag = avio_rl32(pb);
72 2 par->codec_id = ff_codec_get_id(rsd_tags, par->codec_tag);
73
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 2 if (!par->codec_id) {
74 ✗ const char *tag_buf = av_fourcc2str(par->codec_tag);
75 ✗ for (i=0; i < FF_ARRAY_ELEMS(rsd_unsupported_tags); i++) {
76 ✗ if (par->codec_tag == rsd_unsupported_tags[i]) {
77 ✗ avpriv_request_sample(s, "Codec tag: %s", tag_buf);
78 ✗ return AVERROR_PATCHWELCOME;
79 }
80 }
81 ✗ av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);
82 ✗ return AVERROR_INVALIDDATA;
83 }
84
85 2 par->ch_layout.nb_channels = avio_rl32(pb);
86
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 2 if (par->ch_layout.nb_channels <= 0 || par->ch_layout.nb_channels > INT_MAX / 36) {
87 ✗ av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", par->ch_layout.nb_channels);
88 ✗ return AVERROR_INVALIDDATA;
89 }
90
91 2 avio_skip(pb, 4); // Bit depth
92 2 par->sample_rate = avio_rl32(pb);
93
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 2 if (!par->sample_rate)
94 ✗ return AVERROR_INVALIDDATA;
95
96 2 avio_skip(pb, 4); // Unknown
97
98
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 2 switch (par->codec_id) {
99 ✗ case AV_CODEC_ID_XMA2:
100 ✗ par->block_align = 2048;
101 ✗ if ((ret = ff_alloc_extradata(par, 34)) < 0)
102 ✗ return ret;
103 ✗ memset(par->extradata, 0, 34);
104 ✗ break;
105 ✗ case AV_CODEC_ID_ADPCM_PSX:
106 ✗ par->block_align = 16 * par->ch_layout.nb_channels;
107 ✗ break;
108 1 case AV_CODEC_ID_ADPCM_IMA_RAD:
109 1 par->block_align = 20 * par->ch_layout.nb_channels;
110 1 break;
111 ✗ case AV_CODEC_ID_ADPCM_IMA_WAV:
112 ✗ if (version == 2)
113 ✗ start = avio_rl32(pb);
114
115 ✗ par->bits_per_coded_sample = 4;
116 ✗ par->block_align = 36 * par->ch_layout.nb_channels;
117 ✗ break;
118 1 case AV_CODEC_ID_ADPCM_THP_LE:
119 /* RSD3GADP is mono, so only alloc enough memory
120 to store the coeff table for a single channel. */
121
122 1 start = avio_rl32(pb);
123
124
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 1 if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)
125 ✗ return ret;
126 1 break;
127 ✗ case AV_CODEC_ID_ADPCM_THP:
128 ✗ par->block_align = 8 * par->ch_layout.nb_channels;
129 ✗ avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
130
131 ✗ if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->ch_layout.nb_channels)) < 0)
132 ✗ return ret;
133
134 ✗ for (i = 0; i < par->ch_layout.nb_channels; i++) {
135 ✗ ret = ffio_read_size(s->pb, st->codecpar->extradata + 32 * i, 32);
136 ✗ if (ret < 0)
137 ✗ return ret;
138 ✗ avio_skip(s->pb, 8);
139 }
140 ✗ break;
141 ✗ case AV_CODEC_ID_PCM_S16LE:
142 case AV_CODEC_ID_PCM_S16BE:
143 ✗ if (version != 4)
144 ✗ start = avio_rl32(pb);
145
146 ✗ break;
147 }
148
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 2 if (start < 0)
149 ✗ return AVERROR_INVALIDDATA;
150
151
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 2 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
152 2 int64_t remaining = avio_size(pb);
153
154
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 2 if (remaining >= start && remaining - start <= INT_MAX)
155
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 2 switch (par->codec_id) {
156 2 case AV_CODEC_ID_ADPCM_PSX:
157 case AV_CODEC_ID_ADPCM_IMA_RAD:
158 case AV_CODEC_ID_ADPCM_IMA_WAV:
159 case AV_CODEC_ID_ADPCM_THP_LE:
160 2 st->duration = av_get_audio_frame_duration2(par, remaining - start);
161 2 break;
162 ✗ case AV_CODEC_ID_ADPCM_THP:
163 ✗ st->duration = (remaining - start) / (8 * par->ch_layout.nb_channels) * 14;
164 ✗ break;
165 ✗ case AV_CODEC_ID_PCM_S16LE:
166 case AV_CODEC_ID_PCM_S16BE:
167 ✗ st->duration = (remaining - start) / 2 / par->ch_layout.nb_channels;
168 }
169 }
170
171 2 avio_skip(pb, start - avio_tell(pb));
172
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 2 if (par->codec_id == AV_CODEC_ID_XMA2) {
173 ✗ avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
174 ✗ st->duration = avio_rb32(pb);
175 }
176
177 2 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
178
179 2 return 0;
180 }
181
182 1006 static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
183 {
184 1006 AVCodecParameters *par = s->streams[0]->codecpar;
185 1006 int ret, size = 1024;
186 int64_t pos;
187
188
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 1006 if (avio_feof(s->pb))
189 2 return AVERROR_EOF;
190
191 1004 pos = avio_tell(s->pb);
192
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 1004 if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
193
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 3 par->codec_id == AV_CODEC_ID_ADPCM_PSX ||
194
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 3 par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
195
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 3 par->codec_id == AV_CODEC_ID_XMA2) {
196 1001 ret = av_get_packet(s->pb, pkt, par->block_align);
197
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 3 } else if (par->codec_tag == MKTAG('W','A','D','P') &&
198 ✗ par->ch_layout.nb_channels > 1) {
199 int i, ch;
200
201 ✗ ret = av_new_packet(pkt, par->block_align);
202 ✗ if (ret < 0)
203 ✗ return ret;
204 ✗ for (i = 0; i < 4; i++) {
205 ✗ for (ch = 0; ch < par->ch_layout.nb_channels; ch++) {
206 ✗ pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
207 ✗ pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
208 }
209 }
210 ✗ ret = 0;
211 } else {
212 3 ret = av_get_packet(s->pb, pkt, size);
213 }
214
215
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 1004 if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
216 ✗ pkt->duration = (pkt->data[0] >> 2) * 512;
217
218 1004 pkt->pos = pos;
219 1004 pkt->stream_index = 0;
220
221 1004 return ret;
222 }
223
224 const FFInputFormat ff_rsd_demuxer = {
225 .p.name = "rsd",
226 .p.long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"),
227 .p.extensions = "rsd",
228 .p.codec_tag = (const AVCodecTag* const []){rsd_tags, 0},
229 .p.flags = AVFMT_GENERIC_INDEX,
230 .read_probe = rsd_probe,
231 .read_header = rsd_read_header,
232 .read_packet = rsd_read_packet,
233 };
234