FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/rsd.c
Date: 2025-10-26 07:25:09
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 "demux.h"
26 #include "internal.h"
27
28 static const AVCodecTag rsd_tags[] = {
29 { AV_CODEC_ID_ADPCM_PSX, MKTAG('V','A','G',' ') },
30 { AV_CODEC_ID_ADPCM_THP_LE, MKTAG('G','A','D','P') },
31 { AV_CODEC_ID_ADPCM_THP, MKTAG('W','A','D','P') },
32 { AV_CODEC_ID_ADPCM_IMA_RAD, MKTAG('R','A','D','P') },
33 { AV_CODEC_ID_ADPCM_IMA_WAV, MKTAG('X','A','D','P') },
34 { AV_CODEC_ID_PCM_S16BE, MKTAG('P','C','M','B') },
35 { AV_CODEC_ID_PCM_S16LE, MKTAG('P','C','M',' ') },
36 { AV_CODEC_ID_XMA2, MKTAG('X','M','A',' ') },
37 { AV_CODEC_ID_NONE, 0 },
38 };
39
40 static const uint32_t rsd_unsupported_tags[] = {
41 MKTAG('O','G','G',' '),
42 };
43
44 7279 static int rsd_probe(const AVProbeData *p)
45 {
46
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 7279 if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6)
47 7277 return 0;
48
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 2 if (AV_RL32(p->buf + 8) > 256 || !AV_RL32(p->buf + 8))
49 ✗ return AVPROBE_SCORE_MAX / 8;
50
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 2 if (AV_RL32(p->buf + 16) > 8*48000 || !AV_RL32(p->buf + 16))
51 ✗ return AVPROBE_SCORE_MAX / 8;
52 2 return AVPROBE_SCORE_MAX;
53 }
54
55 2 static int rsd_read_header(AVFormatContext *s)
56 {
57 2 AVIOContext *pb = s->pb;
58 2 int i, ret, version, start = 0x800;
59 AVCodecParameters *par;
60 2 AVStream *st = avformat_new_stream(s, NULL);
61
62
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 2 if (!st)
63 ✗ return AVERROR(ENOMEM);
64
65 2 avio_skip(pb, 3); // "RSD"
66 2 version = avio_r8(pb) - '0';
67
68 2 par = st->codecpar;
69 2 par->codec_type = AVMEDIA_TYPE_AUDIO;
70 2 par->codec_tag = avio_rl32(pb);
71 2 par->codec_id = ff_codec_get_id(rsd_tags, par->codec_tag);
72
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 2 if (!par->codec_id) {
73 ✗ const char *tag_buf = av_fourcc2str(par->codec_tag);
74 ✗ for (i=0; i < FF_ARRAY_ELEMS(rsd_unsupported_tags); i++) {
75 ✗ if (par->codec_tag == rsd_unsupported_tags[i]) {
76 ✗ avpriv_request_sample(s, "Codec tag: %s", tag_buf);
77 ✗ return AVERROR_PATCHWELCOME;
78 }
79 }
80 ✗ av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);
81 ✗ return AVERROR_INVALIDDATA;
82 }
83
84 2 par->ch_layout.nb_channels = avio_rl32(pb);
85
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 2 if (par->ch_layout.nb_channels <= 0 || par->ch_layout.nb_channels > INT_MAX / 36) {
86 ✗ av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", par->ch_layout.nb_channels);
87 ✗ return AVERROR_INVALIDDATA;
88 }
89
90 2 avio_skip(pb, 4); // Bit depth
91 2 par->sample_rate = avio_rl32(pb);
92
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 2 if (!par->sample_rate)
93 ✗ return AVERROR_INVALIDDATA;
94
95 2 avio_skip(pb, 4); // Unknown
96
97
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 2 switch (par->codec_id) {
98 ✗ case AV_CODEC_ID_XMA2:
99 ✗ par->block_align = 2048;
100 ✗ if ((ret = ff_alloc_extradata(par, 34)) < 0)
101 ✗ return ret;
102 ✗ memset(par->extradata, 0, 34);
103 ✗ break;
104 ✗ case AV_CODEC_ID_ADPCM_PSX:
105 ✗ par->block_align = 16 * par->ch_layout.nb_channels;
106 ✗ break;
107 1 case AV_CODEC_ID_ADPCM_IMA_RAD:
108 1 par->block_align = 20 * par->ch_layout.nb_channels;
109 1 break;
110 ✗ case AV_CODEC_ID_ADPCM_IMA_WAV:
111 ✗ if (version == 2)
112 ✗ start = avio_rl32(pb);
113
114 ✗ par->bits_per_coded_sample = 4;
115 ✗ par->block_align = 36 * par->ch_layout.nb_channels;
116 ✗ break;
117 1 case AV_CODEC_ID_ADPCM_THP_LE:
118 /* RSD3GADP is mono, so only alloc enough memory
119 to store the coeff table for a single channel. */
120
121 1 start = avio_rl32(pb);
122
123
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 1 if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)
124 ✗ return ret;
125 1 break;
126 ✗ case AV_CODEC_ID_ADPCM_THP:
127 ✗ par->block_align = 8 * par->ch_layout.nb_channels;
128 ✗ avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
129
130 ✗ if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->ch_layout.nb_channels)) < 0)
131 ✗ return ret;
132
133 ✗ for (i = 0; i < par->ch_layout.nb_channels; i++) {
134 ✗ if (avio_feof(pb))
135 ✗ return AVERROR_EOF;
136 ✗ avio_read(s->pb, st->codecpar->extradata + 32 * i, 32);
137 ✗ avio_skip(s->pb, 8);
138 }
139 ✗ break;
140 ✗ case AV_CODEC_ID_PCM_S16LE:
141 case AV_CODEC_ID_PCM_S16BE:
142 ✗ if (version != 4)
143 ✗ start = avio_rl32(pb);
144
145 ✗ break;
146 }
147
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 2 if (start < 0)
148 ✗ return AVERROR_INVALIDDATA;
149
150
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 2 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
151 2 int64_t remaining = avio_size(pb);
152
153
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 2 if (remaining >= start && remaining - start <= INT_MAX)
154
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 2 switch (par->codec_id) {
155 2 case AV_CODEC_ID_ADPCM_PSX:
156 case AV_CODEC_ID_ADPCM_IMA_RAD:
157 case AV_CODEC_ID_ADPCM_IMA_WAV:
158 case AV_CODEC_ID_ADPCM_THP_LE:
159 2 st->duration = av_get_audio_frame_duration2(par, remaining - start);
160 2 break;
161 ✗ case AV_CODEC_ID_ADPCM_THP:
162 ✗ st->duration = (remaining - start) / (8 * par->ch_layout.nb_channels) * 14;
163 ✗ break;
164 ✗ case AV_CODEC_ID_PCM_S16LE:
165 case AV_CODEC_ID_PCM_S16BE:
166 ✗ st->duration = (remaining - start) / 2 / par->ch_layout.nb_channels;
167 }
168 }
169
170 2 avio_skip(pb, start - avio_tell(pb));
171
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 2 if (par->codec_id == AV_CODEC_ID_XMA2) {
172 ✗ avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
173 ✗ st->duration = avio_rb32(pb);
174 }
175
176 2 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
177
178 2 return 0;
179 }
180
181 1006 static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
182 {
183 1006 AVCodecParameters *par = s->streams[0]->codecpar;
184 1006 int ret, size = 1024;
185 int64_t pos;
186
187
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 1006 if (avio_feof(s->pb))
188 2 return AVERROR_EOF;
189
190 1004 pos = avio_tell(s->pb);
191
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 1004 if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
192
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 3 par->codec_id == AV_CODEC_ID_ADPCM_PSX ||
193
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 3 par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
194
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 3 par->codec_id == AV_CODEC_ID_XMA2) {
195 1001 ret = av_get_packet(s->pb, pkt, par->block_align);
196
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 3 } else if (par->codec_tag == MKTAG('W','A','D','P') &&
197 ✗ par->ch_layout.nb_channels > 1) {
198 int i, ch;
199
200 ✗ ret = av_new_packet(pkt, par->block_align);
201 ✗ if (ret < 0)
202 ✗ return ret;
203 ✗ for (i = 0; i < 4; i++) {
204 ✗ for (ch = 0; ch < par->ch_layout.nb_channels; ch++) {
205 ✗ pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
206 ✗ pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
207 }
208 }
209 ✗ ret = 0;
210 } else {
211 3 ret = av_get_packet(s->pb, pkt, size);
212 }
213
214
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 1004 if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
215 ✗ pkt->duration = (pkt->data[0] >> 2) * 512;
216
217 1004 pkt->pos = pos;
218 1004 pkt->stream_index = 0;
219
220 1004 return ret;
221 }
222
223 const FFInputFormat ff_rsd_demuxer = {
224 .p.name = "rsd",
225 .p.long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"),
226 .p.extensions = "rsd",
227 .p.codec_tag = (const AVCodecTag* const []){rsd_tags, 0},
228 .p.flags = AVFMT_GENERIC_INDEX,
229 .read_probe = rsd_probe,
230 .read_header = rsd_read_header,
231 .read_packet = rsd_read_packet,
232 };
233