siff.c
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1 /*
2  * Beam Software SIFF demuxer
3  * Copyright (c) 2007 Konstantin Shishkov
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 
23 #include "libavutil/intreadwrite.h"
24 #include "avformat.h"
25 #include "internal.h"
26 #include "avio_internal.h"
27 
28 enum SIFFTags{
29  TAG_SIFF = MKTAG('S', 'I', 'F', 'F'),
30  TAG_BODY = MKTAG('B', 'O', 'D', 'Y'),
31  TAG_VBHD = MKTAG('V', 'B', 'H', 'D'),
32  TAG_SHDR = MKTAG('S', 'H', 'D', 'R'),
33  TAG_VBV1 = MKTAG('V', 'B', 'V', '1'),
34  TAG_SOUN = MKTAG('S', 'O', 'U', 'N'),
35 };
36 
37 enum VBFlags{
38  VB_HAS_GMC = 0x01,
39  VB_HAS_AUDIO = 0x04,
40  VB_HAS_VIDEO = 0x08,
43 };
44 
45 typedef struct SIFFContext{
46  int frames;
47  int cur_frame;
48  int rate;
49  int bits;
51 
52  int has_video;
53  int has_audio;
54 
55  int curstrm;
56  int pktsize;
57  int gmcsize;
58  int sndsize;
59 
60  int flags;
63 
64 static int siff_probe(AVProbeData *p)
65 {
66  uint32_t tag = AV_RL32(p->buf + 8);
67  /* check file header */
68  if (AV_RL32(p->buf) != TAG_SIFF ||
69  (tag != TAG_VBV1 && tag != TAG_SOUN))
70  return 0;
71  return AVPROBE_SCORE_MAX;
72 }
73 
75 {
76  AVStream *ast;
77  ast = avformat_new_stream(s, NULL);
78  if (!ast)
79  return AVERROR(ENOMEM);
82  ast->codec->channels = 1;
84  ast->codec->bits_per_coded_sample = 8;
85  ast->codec->sample_rate = c->rate;
86  avpriv_set_pts_info(ast, 16, 1, c->rate);
87  ast->start_time = 0;
88  return 0;
89 }
90 
92 {
93  AVStream *st;
94  int width, height;
95 
96  if (avio_rl32(pb) != TAG_VBHD){
97  av_log(s, AV_LOG_ERROR, "Header chunk is missing\n");
98  return AVERROR_INVALIDDATA;
99  }
100  if(avio_rb32(pb) != 32){
101  av_log(s, AV_LOG_ERROR, "Header chunk size is incorrect\n");
102  return AVERROR_INVALIDDATA;
103  }
104  if(avio_rl16(pb) != 1){
105  av_log(s, AV_LOG_ERROR, "Incorrect header version\n");
106  return AVERROR_INVALIDDATA;
107  }
108  width = avio_rl16(pb);
109  height = avio_rl16(pb);
110  avio_skip(pb, 4);
111  c->frames = avio_rl16(pb);
112  if(!c->frames){
113  av_log(s, AV_LOG_ERROR, "File contains no frames ???\n");
114  return AVERROR_INVALIDDATA;
115  }
116  c->bits = avio_rl16(pb);
117  c->rate = avio_rl16(pb);
118  c->block_align = c->rate * (c->bits >> 3);
119 
120  avio_skip(pb, 16); //zeroes
121 
122  st = avformat_new_stream(s, NULL);
123  if (!st)
124  return AVERROR(ENOMEM);
127  st->codec->codec_tag = MKTAG('V', 'B', 'V', '1');
128  st->codec->width = width;
129  st->codec->height = height;
131  st->nb_frames =
132  st->duration = c->frames;
133  avpriv_set_pts_info(st, 16, 1, 12);
134 
135  c->cur_frame = 0;
136  c->has_video = 1;
137  c->has_audio = !!c->rate;
138  c->curstrm = -1;
139  if (c->has_audio && create_audio_stream(s, c) < 0)
140  return AVERROR(ENOMEM);
141  return 0;
142 }
143 
145 {
146  if (avio_rl32(pb) != TAG_SHDR){
147  av_log(s, AV_LOG_ERROR, "Header chunk is missing\n");
148  return AVERROR_INVALIDDATA;
149  }
150  if(avio_rb32(pb) != 8){
151  av_log(s, AV_LOG_ERROR, "Header chunk size is incorrect\n");
152  return AVERROR_INVALIDDATA;
153  }
154  avio_skip(pb, 4); //unknown value
155  c->rate = avio_rl16(pb);
156  c->bits = avio_rl16(pb);
157  c->block_align = c->rate * (c->bits >> 3);
158  return create_audio_stream(s, c);
159 }
160 
162 {
163  AVIOContext *pb = s->pb;
164  SIFFContext *c = s->priv_data;
165  uint32_t tag;
166  int ret;
167 
168  if (avio_rl32(pb) != TAG_SIFF)
169  return AVERROR_INVALIDDATA;
170  avio_skip(pb, 4); //ignore size
171  tag = avio_rl32(pb);
172 
173  if (tag != TAG_VBV1 && tag != TAG_SOUN){
174  av_log(s, AV_LOG_ERROR, "Not a VBV file\n");
175  return AVERROR_INVALIDDATA;
176  }
177 
178  if (tag == TAG_VBV1 && (ret = siff_parse_vbv1(s, c, pb)) < 0)
179  return ret;
180  if (tag == TAG_SOUN && (ret = siff_parse_soun(s, c, pb)) < 0)
181  return ret;
182  if (avio_rl32(pb) != MKTAG('B', 'O', 'D', 'Y')){
183  av_log(s, AV_LOG_ERROR, "'BODY' chunk is missing\n");
184  return AVERROR_INVALIDDATA;
185  }
186  avio_skip(pb, 4); //ignore size
187 
188  return 0;
189 }
190 
192 {
193  SIFFContext *c = s->priv_data;
194  int size;
195 
196  if (c->has_video){
197  if (c->cur_frame >= c->frames)
198  return AVERROR_EOF;
199  if (c->curstrm == -1){
200  c->pktsize = avio_rl32(s->pb) - 4;
201  c->flags = avio_rl16(s->pb);
202  c->gmcsize = (c->flags & VB_HAS_GMC) ? 4 : 0;
203  if (c->gmcsize)
204  avio_read(s->pb, c->gmc, c->gmcsize);
205  c->sndsize = (c->flags & VB_HAS_AUDIO) ? avio_rl32(s->pb): 0;
206  c->curstrm = !!(c->flags & VB_HAS_AUDIO);
207  }
208 
209  if (!c->curstrm){
210  size = c->pktsize - c->sndsize - c->gmcsize - 2;
211  size = ffio_limit(s->pb, size);
212  if(size < 0 || c->pktsize < c->sndsize)
213  return AVERROR_INVALIDDATA;
214  if (av_new_packet(pkt, size + c->gmcsize + 2) < 0)
215  return AVERROR(ENOMEM);
216  AV_WL16(pkt->data, c->flags);
217  if (c->gmcsize)
218  memcpy(pkt->data + 2, c->gmc, c->gmcsize);
219  avio_read(s->pb, pkt->data + 2 + c->gmcsize, size);
220  pkt->stream_index = 0;
221  c->curstrm = -1;
222  }else{
223  if ((size = av_get_packet(s->pb, pkt, c->sndsize - 4)) < 0)
224  return AVERROR(EIO);
225  pkt->stream_index = 1;
226  pkt->duration = size;
227  c->curstrm = 0;
228  }
229  if(!c->cur_frame || c->curstrm)
230  pkt->flags |= AV_PKT_FLAG_KEY;
231  if (c->curstrm == -1)
232  c->cur_frame++;
233  }else{
234  size = av_get_packet(s->pb, pkt, c->block_align);
235  if(!size)
236  return AVERROR_EOF;
237  if(size < 0)
238  return AVERROR(EIO);
239  pkt->duration = size;
240  }
241  return pkt->size;
242 }
243 
245  .name = "siff",
246  .long_name = NULL_IF_CONFIG_SMALL("Beam Software SIFF"),
247  .priv_data_size = sizeof(SIFFContext),
251  .extensions = "vb,son",
252 };
const char * s
Definition: avisynth_c.h:668
Bytestream IO Context.
Definition: avio.h:68
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
SIFFTags
Definition: siff.c:28
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.
int frames
Definition: siff.c:46
int rate
Definition: siff.c:48
Definition: siff.c:30
static int siff_probe(AVProbeData *p)
Definition: siff.c:64
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:256
Format I/O context.
Definition: avformat.h:944
int ffio_limit(AVIOContext *s, int size)
int curstrm
Definition: siff.c:55
uint8_t
static int create_audio_stream(AVFormatContext *s, SIFFContext *c)
Definition: siff.c:74
8 bit with PIX_FMT_RGB32 palette
Definition: pixfmt.h:79
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:610
AVInputFormat ff_siff_demuxer
Definition: siff.c:244
static AVPacket pkt
Definition: demuxing.c:56
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int has_audio
Definition: siff.c:53
uint8_t * data
uint32_t tag
Definition: movenc.c:894
#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.
struct SIFFContext SIFFContext
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:478
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:73
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:579
#define AV_WL16(p, darg)
Definition: intreadwrite.h:250
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: siff.c:29
int has_video
Definition: siff.c:52
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:246
uint8_t gmc[4]
Definition: siff.c:61
int size
int flags
A combination of AV_PKT_FLAG values.
uint64_t channel_layout
Audio channel layout.
AVCodecContext * codec
Codec context associated with this stream.
Definition: avformat.h:662
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:336
static int siff_parse_soun(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
Definition: siff.c:144
int cur_frame
Definition: siff.c:47
audio channel layout utility functions
static int read_probe(AVProbeData *pd)
ret
Definition: avfilter.c:821
int width
picture width / height.
#define AV_RL32
int sndsize
Definition: siff.c:58
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:517
Stream structure.
Definition: avformat.h:643
NULL
Definition: eval.c:55
int pktsize
Definition: siff.c:56
static int width
Definition: tests/utils.c:158
enum AVMediaType codec_type
int flags
Definition: siff.c:60
static int siff_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: siff.c:191
enum AVCodecID codec_id
int sample_rate
samples per second
AVIOContext * pb
I/O context.
Definition: avformat.h:977
int block_align
Definition: siff.c:50
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:148
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> (&#39;D&#39;<<24) + (&#39;C&#39;<<16) + (&#39;B&#39;<<8) + &#39;A&#39;).
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Definition: libcdio.c:114
BYTE int const BYTE int int int height
Definition: avisynth_c.h:713
Definition: siff.c:34
VBFlags
Definition: vb.c:34
Definition: siff.c:32
This structure contains the data a format has to probe a file.
Definition: avformat.h:334
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer 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.Buffer references ownership and permissions
Definition: siff.c:31
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:696
static int siff_parse_vbv1(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
Definition: siff.c:91
#define AVPROBE_SCORE_MAX
maximum score, half of that is used for file-extension-based detection
Definition: avformat.h:340
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:563
Main libavformat public API header.
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:689
static double c[64]
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:698
int channels
number of audio channels
void * priv_data
Format private data.
Definition: avformat.h:964
int bits
Definition: siff.c:49
int gmcsize
Definition: siff.c:57
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:461
static int siff_read_header(AVFormatContext *s)
Definition: siff.c:161
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
Definition: common.h:282
This structure stores compressed data.
Definition: siff.c:33