3 * Copyright (c) 2013 James Almer
5 * This file is part of FFmpeg.
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.
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.
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
22 #include "libavcodec/bytestream.h"
23 #include "libavutil/intreadwrite.h"
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 },
40 static const uint32_t rsd_unsupported_tags[] = {
41 MKTAG('O','G','G',' '),
44 static int rsd_probe(AVProbeData *p)
46 if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6)
48 if (AV_RL32(p->buf + 8) > 256 || !AV_RL32(p->buf + 8))
49 return AVPROBE_SCORE_MAX / 8;
50 if (AV_RL32(p->buf + 16) > 8*48000 || !AV_RL32(p->buf + 16))
51 return AVPROBE_SCORE_MAX / 8;
52 return AVPROBE_SCORE_MAX;
55 static int rsd_read_header(AVFormatContext *s)
57 AVIOContext *pb = s->pb;
58 int i, ret, version, start = 0x800;
59 AVCodecParameters *par;
60 AVStream *st = avformat_new_stream(s, NULL);
63 return AVERROR(ENOMEM);
65 avio_skip(pb, 3); // "RSD"
66 version = avio_r8(pb) - '0';
69 par->codec_type = AVMEDIA_TYPE_AUDIO;
70 par->codec_tag = avio_rl32(pb);
71 par->codec_id = ff_codec_get_id(rsd_tags, par->codec_tag);
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;
80 av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);
81 return AVERROR_INVALIDDATA;
84 par->channels = avio_rl32(pb);
85 if (par->channels <= 0 || par->channels > INT_MAX / 36) {
86 av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", par->channels);
87 return AVERROR_INVALIDDATA;
90 avio_skip(pb, 4); // Bit depth
91 par->sample_rate = avio_rl32(pb);
92 if (!par->sample_rate)
93 return AVERROR_INVALIDDATA;
95 avio_skip(pb, 4); // Unknown
97 switch (par->codec_id) {
98 case AV_CODEC_ID_XMA2:
99 par->block_align = 2048;
100 ff_alloc_extradata(par, 34);
102 return AVERROR(ENOMEM);
103 memset(par->extradata, 0, 34);
105 case AV_CODEC_ID_ADPCM_PSX:
106 par->block_align = 16 * par->channels;
107 if (pb->seekable & AVIO_SEEKABLE_NORMAL)
108 st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
110 case AV_CODEC_ID_ADPCM_IMA_RAD:
111 par->block_align = 20 * par->channels;
112 if (pb->seekable & AVIO_SEEKABLE_NORMAL)
113 st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
115 case AV_CODEC_ID_ADPCM_IMA_WAV:
117 start = avio_rl32(pb);
119 par->bits_per_coded_sample = 4;
120 par->block_align = 36 * par->channels;
121 if (pb->seekable & AVIO_SEEKABLE_NORMAL)
122 st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
124 case AV_CODEC_ID_ADPCM_THP_LE:
125 /* RSD3GADP is mono, so only alloc enough memory
126 to store the coeff table for a single channel. */
128 start = avio_rl32(pb);
130 if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)
132 if (pb->seekable & AVIO_SEEKABLE_NORMAL)
133 st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
135 case AV_CODEC_ID_ADPCM_THP:
136 par->block_align = 8 * par->channels;
137 avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
139 if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->channels)) < 0)
142 for (i = 0; i < par->channels; i++) {
143 avio_read(s->pb, st->codecpar->extradata + 32 * i, 32);
146 if (pb->seekable & AVIO_SEEKABLE_NORMAL)
147 st->duration = (avio_size(pb) - start) / (8 * par->channels) * 14;
149 case AV_CODEC_ID_PCM_S16LE:
150 case AV_CODEC_ID_PCM_S16BE:
152 start = avio_rl32(pb);
154 if (pb->seekable & AVIO_SEEKABLE_NORMAL)
155 st->duration = (avio_size(pb) - start) / 2 / par->channels;
159 avio_skip(pb, start - avio_tell(pb));
160 if (par->codec_id == AV_CODEC_ID_XMA2) {
161 avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
162 st->duration = avio_rb32(pb);
165 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
170 static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
172 AVCodecParameters *par = s->streams[0]->codecpar;
173 int ret, size = 1024;
176 if (avio_feof(s->pb))
179 pos = avio_tell(s->pb);
180 if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
181 par->codec_id == AV_CODEC_ID_ADPCM_PSX ||
182 par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
183 par->codec_id == AV_CODEC_ID_XMA2) {
184 ret = av_get_packet(s->pb, pkt, par->block_align);
185 } else if (par->codec_tag == MKTAG('W','A','D','P') &&
189 ret = av_new_packet(pkt, par->block_align);
192 for (i = 0; i < 4; i++) {
193 for (ch = 0; ch < par->channels; ch++) {
194 pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
195 pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
200 ret = av_get_packet(s->pb, pkt, size);
203 if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
204 pkt->duration = (pkt->data[0] >> 2) * 512;
207 pkt->stream_index = 0;
212 AVInputFormat ff_rsd_demuxer = {
214 .long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"),
215 .read_probe = rsd_probe,
216 .read_header = rsd_read_header,
217 .read_packet = rsd_read_packet,
219 .codec_tag = (const AVCodecTag* const []){rsd_tags, 0},
220 .flags = AVFMT_GENERIC_INDEX,