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);
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  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;
142  if (version != 4)
143  start = avio_rl32(pb);
144 
145  break;
146  }
147  if (start < 0)
148  return AVERROR_INVALIDDATA;
149 
150  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
151  int64_t remaining = avio_size(pb);
152 
153  if (remaining >= start && remaining - start <= INT_MAX)
154  switch (par->codec_id) {
159  st->duration = av_get_audio_frame_duration2(par, remaining - start);
160  break;
162  st->duration = (remaining - start) / (8 * par->channels) * 14;
163  break;
166  st->duration = (remaining - start) / 2 / par->channels;
167  }
168  }
169 
170  avio_skip(pb, start - avio_tell(pb));
171  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  avpriv_set_pts_info(st, 64, 1, par->sample_rate);
177 
178  return 0;
179 }
180 
182 {
183  AVCodecParameters *par = s->streams[0]->codecpar;
184  int ret, size = 1024;
185  int64_t pos;
186 
187  if (avio_feof(s->pb))
188  return AVERROR_EOF;
189 
190  pos = avio_tell(s->pb);
191  if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
194  par->codec_id == AV_CODEC_ID_XMA2) {
195  ret = av_get_packet(s->pb, pkt, par->block_align);
196  } else if (par->codec_tag == MKTAG('W','A','D','P') &&
197  par->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->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  ret = av_get_packet(s->pb, pkt, size);
212  }
213 
214  if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
215  pkt->duration = (pkt->data[0] >> 2) * 512;
216 
217  pkt->pos = pos;
218  pkt->stream_index = 0;
219 
220  return ret;
221 }
222 
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 };
AV_CODEC_ID_PCM_S16LE
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:313
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
AVERROR
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
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4347
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
ff_get_extradata
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:3261
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
AVPacket::data
uint8_t * data
Definition: packet.h:373
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:391
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
avio_size
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:338
AV_CODEC_ID_ADPCM_THP_LE
@ AV_CODEC_ID_ADPCM_THP_LE
Definition: codec_id.h:388
av_get_audio_frame_duration2
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:821
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:458
AVCodecParameters::channels
int channels
Audio only.
Definition: codec_par.h:166
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:314
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:486
AVFMT_GENERIC_INDEX
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:468
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:890
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:773
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
AVInputFormat
Definition: avformat.h:626
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
AVCodecTag
Definition: internal.h:50
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
av_new_packet
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:99
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:631
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVFormatContext
Format I/O context.
Definition: avformat.h:1107
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:994
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
rsd_tags
static const AVCodecTag rsd_tags[]
Definition: rsd.c:28
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: codec_par.h:170
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:742
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
AVPacket::size
int size
Definition: packet.h:374
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
ff_codec_get_id
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3059
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:262
AV_CODEC_ID_ADPCM_IMA_RAD
@ AV_CODEC_ID_ADPCM_IMA_RAD
Definition: codec_id.h:386
avpriv_set_pts_info
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:4771
size
int size
Definition: twinvq_data.h:10344
avio.h
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:616
version
version
Definition: libkvazaar.c:307
i
int i
Definition: input.c:406
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:48
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:177
rsd_read_header
static int rsd_read_header(AVFormatContext *s)
Definition: rsd.c:55
rsd_unsupported_tags
static const uint32_t rsd_unsupported_tags[]
Definition: rsd.c:40
av_get_packet
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:257
rsd_probe
static int rsd_probe(const AVProbeData *p)
Definition: rsd.c:44
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:847
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:92
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:625
AVPacket::stream_index
int stream_index
Definition: packet.h:375
ff_rsd_demuxer
const AVInputFormat ff_rsd_demuxer
Definition: rsd.c:223
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:333
AV_CODEC_ID_ADPCM_THP
@ AV_CODEC_ID_ADPCM_THP
Definition: codec_id.h:370
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
rsd_read_packet
static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rsd.c:181
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:37
AV_CODEC_ID_XMA2
@ AV_CODEC_ID_XMA2
Definition: codec_id.h:502
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVPacket
This structure stores compressed data.
Definition: packet.h:350
AV_CODEC_ID_ADPCM_IMA_WAV
@ AV_CODEC_ID_ADPCM_IMA_WAV
Definition: codec_id.h:353
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:393
bytestream.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
AV_CODEC_ID_ADPCM_PSX
@ AV_CODEC_ID_ADPCM_PSX
Definition: codec_id.h:389
av_fourcc2str
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
ff_alloc_extradata
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:3243
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:360