FFmpeg  4.3.6
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  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 };
#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:334
Buffered I/O operations.
version
Definition: libkvazaar.c:292
int size
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3165
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:375
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:4948
#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:356
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:329
static AVPacket pkt
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
Format I/O context.
Definition: avformat.h:1351
static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rsd.c:181
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:778
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4526
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
uint8_t * data
Definition: packet.h:355
#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:307
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:625
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 i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:747
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
unsigned int pos
Definition: spdifenc.c:412
#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:1815
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:616
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:3328
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_RL32
Definition: intreadwrite.h:146
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:876
#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:1393
#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:925
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:3346
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:650
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:356
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:357
AVInputFormat ff_rsd_demuxer
Definition: rsd.c:223
#define MKTAG(a, b, c, d)
Definition: common.h:406
This structure stores compressed data.
Definition: packet.h:332