FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/rsd.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 61 123 49.6%
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 6780 static int rsd_probe(const AVProbeData *p)
45 {
46
4/6
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 6778 times.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
✓ Branch 5 taken 2 times.
6780 if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6)
47 6778 return 0;
48
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
2 if (AV_RL32(p->buf + 8) > 256 || !AV_RL32(p->buf + 8))
49 return AVPROBE_SCORE_MAX / 8;
50
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
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
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
2 if (!par->sample_rate)
93 return AVERROR_INVALIDDATA;
94
95 2 avio_skip(pb, 4); // Unknown
96
97
2/8
✗ Branch 0 not taken.
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 1 times.
✗ Branch 5 not taken.
✗ Branch 6 not taken.
✗ Branch 7 not taken.
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
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
2 if (start < 0)
148 return AVERROR_INVALIDDATA;
149
150
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
2 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
151 2 int64_t remaining = avio_size(pb);
152
153
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
2 if (remaining >= start && remaining - start <= INT_MAX)
154
1/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
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
2/2
✓ Branch 1 taken 2 times.
✓ Branch 2 taken 1004 times.
1006 if (avio_feof(s->pb))
188 2 return AVERROR_EOF;
189
190 1004 pos = avio_tell(s->pb);
191
2/2
✓ Branch 0 taken 3 times.
✓ Branch 1 taken 1001 times.
1004 if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
192
1/2
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
3 par->codec_id == AV_CODEC_ID_ADPCM_PSX ||
193
1/2
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
3 par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
194
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3 times.
3 par->codec_id == AV_CODEC_ID_XMA2) {
195 1001 ret = av_get_packet(s->pb, pkt, par->block_align);
196
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3 times.
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
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 1004 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
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 AVInputFormat ff_rsd_demuxer = {
224 .name = "rsd",
225 .long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"),
226 .read_probe = rsd_probe,
227 .read_header = rsd_read_header,
228 .read_packet = rsd_read_packet,
229 .extensions = "rsd",
230 .codec_tag = (const AVCodecTag* const []){rsd_tags, 0},
231 .flags = AVFMT_GENERIC_INDEX,
232 };
233