FFmpeg
rsd.c
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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 "libavcodec/bytestream.h"
23 #include "libavutil/intreadwrite.h"
24 #include "avformat.h"
25 #include "avio.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 static int rsd_probe(const AVProbeData *p)
45 {
46  if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6)
47  return 0;
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;
53 }
54 
56 {
57  AVIOContext *pb = s->pb;
58  int i, ret, version, start = 0x800;
59  AVCodecParameters *par;
61 
62  if (!st)
63  return AVERROR(ENOMEM);
64 
65  avio_skip(pb, 3); // "RSD"
66  version = avio_r8(pb) - '0';
67 
68  par = st->codecpar;
70  par->codec_tag = avio_rl32(pb);
71  par->codec_id = ff_codec_get_id(rsd_tags, par->codec_tag);
72  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  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;
88  }
89 
90  avio_skip(pb, 4); // Bit depth
91  par->sample_rate = avio_rl32(pb);
92  if (!par->sample_rate)
93  return AVERROR_INVALIDDATA;
94 
95  avio_skip(pb, 4); // Unknown
96 
97  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;
105  par->block_align = 16 * par->channels;
106  break;
108  par->block_align = 20 * par->channels;
109  break;
111  if (version == 2)
112  start = avio_rl32(pb);
113 
114  par->bits_per_coded_sample = 4;
115  par->block_align = 36 * par->channels;
116  break;
118  /* RSD3GADP is mono, so only alloc enough memory
119  to store the coeff table for a single channel. */
120 
121  start = avio_rl32(pb);
122 
123  if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)
124  return ret;
125  break;
127  par->block_align = 8 * par->channels;
128  avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
129 
130  if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->channels)) < 0)
131  return ret;
132 
133  for (i = 0; i < par->channels; i++) {
134  avio_read(s->pb, st->codecpar->extradata + 32 * i, 32);
135  avio_skip(s->pb, 8);
136  }
137  break;
140  if (version != 4)
141  start = avio_rl32(pb);
142 
143  break;
144  }
145  if (start < 0)
146  return AVERROR_INVALIDDATA;
147 
148  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
149  int64_t remaining = avio_size(pb);
150 
151  if (remaining >= start && remaining - start <= INT_MAX)
152  switch (par->codec_id) {
157  st->duration = av_get_audio_frame_duration2(par, remaining - start);
158  break;
160  st->duration = (remaining - start) / (8 * par->channels) * 14;
161  break;
164  st->duration = (remaining - start) / 2 / par->channels;
165  }
166  }
167 
168  avio_skip(pb, start - avio_tell(pb));
169  if (par->codec_id == AV_CODEC_ID_XMA2) {
170  avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
171  st->duration = avio_rb32(pb);
172  }
173 
174  avpriv_set_pts_info(st, 64, 1, par->sample_rate);
175 
176  return 0;
177 }
178 
180 {
181  AVCodecParameters *par = s->streams[0]->codecpar;
182  int ret, size = 1024;
183  int64_t pos;
184 
185  if (avio_feof(s->pb))
186  return AVERROR_EOF;
187 
188  pos = avio_tell(s->pb);
189  if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
192  par->codec_id == AV_CODEC_ID_XMA2) {
193  ret = av_get_packet(s->pb, pkt, par->block_align);
194  } else if (par->codec_tag == MKTAG('W','A','D','P') &&
195  par->channels > 1) {
196  int i, ch;
197 
198  ret = av_new_packet(pkt, par->block_align);
199  if (ret < 0)
200  return ret;
201  for (i = 0; i < 4; i++) {
202  for (ch = 0; ch < par->channels; ch++) {
203  pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
204  pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
205  }
206  }
207  ret = 0;
208  } else {
209  ret = av_get_packet(s->pb, pkt, size);
210  }
211 
212  if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
213  pkt->duration = (pkt->data[0] >> 2) * 512;
214 
215  pkt->pos = pos;
216  pkt->stream_index = 0;
217 
218  return ret;
219 }
220 
222  .name = "rsd",
223  .long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"),
224  .read_probe = rsd_probe,
225  .read_header = rsd_read_header,
226  .read_packet = rsd_read_packet,
227  .extensions = "rsd",
228  .codec_tag = (const AVCodecTag* const []){rsd_tags, 0},
229  .flags = AVFMT_GENERIC_INDEX,
230 };
#define NULL
Definition: coverity.c:32
Bytestream IO Context.
Definition: avio.h:161
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:346
Buffered I/O operations.
version
Definition: libkvazaar.c:317
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3097
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:383
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4871
#define avpriv_request_sample(...)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int size
Definition: packet.h:364
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:341
static AVPacket pkt
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
Format I/O context.
Definition: avformat.h:1239
static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rsd.c:179
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:783
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:381
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4453
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1307
uint8_t * data
Definition: packet.h:363
#define AVERROR_EOF
End of file.
Definition: error.h:55
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:305
ptrdiff_t size
Definition: opengl_enc.c:100
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
static const AVCodecTag rsd_tags[]
Definition: rsd.c:28
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:637
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:88
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:752
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
unsigned int pos
Definition: spdifenc.c:410
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
This function is the same as av_get_audio_frame_duration(), except it works with AVCodecParameters in...
Definition: utils.c:1795
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:628
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
int block_align
Audio only.
Definition: codec_par.h:177
static const uint32_t rsd_unsupported_tags[]
Definition: rsd.c:40
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:3260
#define s(width, name)
Definition: cbs_vp9.c:257
static int rsd_read_header(AVFormatContext *s)
Definition: rsd.c:55
#define FF_ARRAY_ELEMS(a)
static int rsd_probe(const AVProbeData *p)
Definition: rsd.c:44
Stream structure.
Definition: avformat.h:880
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
AVIOContext * pb
I/O context.
Definition: avformat.h:1281
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:463
This structure contains the data a format has to probe a file.
Definition: avformat.h:441
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:929
int sample_rate
Audio only.
Definition: codec_par.h:170
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
Main libavformat public API header.
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...
Definition: utils.c:3278
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
int channels
Audio only.
Definition: codec_par.h:166
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:652
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1045
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:368
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
int stream_index
Definition: packet.h:365
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
AVInputFormat ff_rsd_demuxer
Definition: rsd.c:221
#define MKTAG(a, b, c, d)
Definition: common.h:405
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:91
This structure stores compressed data.
Definition: packet.h:340
int i
Definition: input.c:407