FFmpeg
cinedec.c
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1 /*
2  * Phantom Cine demuxer
3  * Copyright (c) 2010-2011 Peter Ross <pross@xvid.org>
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 /**
23  * @file
24  * Phantom Cine demuxer
25  * @author Peter Ross <pross@xvid.org>
26  */
27 
28 #include "libavutil/intreadwrite.h"
29 #include "libavcodec/bmp.h"
30 #include "libavutil/intfloat.h"
31 #include "avformat.h"
32 #include "internal.h"
33 
34 typedef struct {
35  uint64_t pts;
36  uint64_t maxsize;
37 } CineDemuxContext;
38 
39 /** Compression */
40 enum {
41  CC_RGB = 0, /**< Gray */
42  CC_LEAD = 1, /**< LEAD (M)JPEG */
43  CC_UNINT = 2 /**< Uninterpolated color image (CFA field indicates color ordering) */
44 };
45 
46 /** Color Filter Array */
47 enum {
48  CFA_NONE = 0, /**< GRAY */
49  CFA_VRI = 1, /**< GBRG/RGGB */
50  CFA_VRIV6 = 2, /**< BGGR/GRBG */
51  CFA_BAYER = 3, /**< GB/RG */
52  CFA_BAYERFLIP = 4, /**< RG/GB */
53 };
54 
55 #define CFA_TLGRAY 0x80000000U
56 #define CFA_TRGRAY 0x40000000U
57 #define CFA_BLGRAY 0x20000000U
58 #define CFA_BRGRAY 0x10000000U
59 
60 static int cine_read_probe(const AVProbeData *p)
61 {
62  int HeaderSize;
63  if (p->buf[0] == 'C' && p->buf[1] == 'I' && // Type
64  (HeaderSize = AV_RL16(p->buf + 2)) >= 0x2C && // HeaderSize
65  AV_RL16(p->buf + 4) <= CC_UNINT && // Compression
66  AV_RL16(p->buf + 6) <= 1 && // Version
67  AV_RL32(p->buf + 20) && // ImageCount
68  AV_RL32(p->buf + 24) >= HeaderSize && // OffImageHeader
69  AV_RL32(p->buf + 28) >= HeaderSize && // OffSetup
70  AV_RL32(p->buf + 32) >= HeaderSize) // OffImageOffsets
71  return AVPROBE_SCORE_MAX;
72  return 0;
73 }
74 
75 static int set_metadata_int(AVDictionary **dict, const char *key, int value, int allow_zero)
76 {
77  if (value || allow_zero) {
78  return av_dict_set_int(dict, key, value, 0);
79  }
80  return 0;
81 }
82 
83 static int set_metadata_float(AVDictionary **dict, const char *key, float value, int allow_zero)
84 {
85  if (value != 0 || allow_zero) {
86  char tmp[64];
87  snprintf(tmp, sizeof(tmp), "%f", value);
88  return av_dict_set(dict, key, tmp, 0);
89  }
90  return 0;
91 }
92 
93 static int cine_read_header(AVFormatContext *avctx)
94 {
95  AVIOContext *pb = avctx->pb;
96  AVStream *st;
97  unsigned int version, compression, offImageHeader, offSetup, offImageOffsets, biBitCount, length, CFA;
98  int vflip;
99  char *description;
100  uint64_t i;
101 
102  st = avformat_new_stream(avctx, NULL);
103  if (!st)
104  return AVERROR(ENOMEM);
105  st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
106  st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
107  st->codecpar->codec_tag = 0;
108 
109  /* CINEFILEHEADER structure */
110  avio_skip(pb, 4); // Type, Headersize
111 
112  compression = avio_rl16(pb);
113  version = avio_rl16(pb);
114  if (version != 1) {
115  avpriv_request_sample(avctx, "unknown version %i", version);
116  return AVERROR_INVALIDDATA;
117  }
118 
119  avio_skip(pb, 12); // FirstMovieImage, TotalImageCount, FirstImageNumber
120 
121  st->duration = avio_rl32(pb);
122  offImageHeader = avio_rl32(pb);
123  offSetup = avio_rl32(pb);
124  offImageOffsets = avio_rl32(pb);
125 
126  avio_skip(pb, 8); // TriggerTime
127 
128  /* BITMAPINFOHEADER structure */
129  avio_seek(pb, offImageHeader, SEEK_SET);
130  avio_skip(pb, 4); //biSize
131  st->codecpar->width = avio_rl32(pb);
132  st->codecpar->height = avio_rl32(pb);
133 
134  if (avio_rl16(pb) != 1) // biPlanes
135  return AVERROR_INVALIDDATA;
136 
137  biBitCount = avio_rl16(pb);
138  if (biBitCount != 8 && biBitCount != 16 && biBitCount != 24 && biBitCount != 48) {
139  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
140  return AVERROR_INVALIDDATA;
141  }
142 
143  switch (avio_rl32(pb)) {
144  case BMP_RGB:
145  vflip = 0;
146  break;
147  case 0x100: /* BI_PACKED */
148  st->codecpar->codec_tag = MKTAG('B', 'I', 'T', 0);
149  vflip = 1;
150  break;
151  default:
152  avpriv_request_sample(avctx, "unknown bitmap compression");
153  return AVERROR_INVALIDDATA;
154  }
155 
156  avio_skip(pb, 4); // biSizeImage
157 
158  /* parse SETUP structure */
159  avio_seek(pb, offSetup, SEEK_SET);
160  avio_skip(pb, 140); // FrameRatae16 .. descriptionOld
161  if (avio_rl16(pb) != 0x5453)
162  return AVERROR_INVALIDDATA;
163  length = avio_rl16(pb);
164  if (length < 0x163C) {
165  avpriv_request_sample(avctx, "short SETUP header");
166  return AVERROR_INVALIDDATA;
167  }
168 
169  avio_skip(pb, 616); // Binning .. bFlipH
170  if (!avio_rl32(pb) ^ vflip) {
171  st->codecpar->extradata = av_strdup("BottomUp");
172  if (!st->codecpar->extradata) {
173  st->codecpar->extradata_size = 0;
174  return AVERROR(ENOMEM);
175  }
176  st->codecpar->extradata_size = 9;
177  }
178 
179  avio_skip(pb, 4); // Grid
180 
181  avpriv_set_pts_info(st, 64, 1, avio_rl32(pb));
182 
183  avio_skip(pb, 20); // Shutter .. bEnableColor
184 
185  set_metadata_int(&st->metadata, "camera_version", avio_rl32(pb), 0);
186  set_metadata_int(&st->metadata, "firmware_version", avio_rl32(pb), 0);
187  set_metadata_int(&st->metadata, "software_version", avio_rl32(pb), 0);
188  set_metadata_int(&st->metadata, "recording_timezone", avio_rl32(pb), 0);
189 
190  CFA = avio_rl32(pb);
191 
192  set_metadata_int(&st->metadata, "brightness", avio_rl32(pb), 1);
193  set_metadata_int(&st->metadata, "contrast", avio_rl32(pb), 1);
194  set_metadata_int(&st->metadata, "gamma", avio_rl32(pb), 1);
195 
196  avio_skip(pb, 12 + 16); // Reserved1 .. AutoExpRect
197  set_metadata_float(&st->metadata, "wbgain[0].r", av_int2float(avio_rl32(pb)), 1);
198  set_metadata_float(&st->metadata, "wbgain[0].b", av_int2float(avio_rl32(pb)), 1);
199  avio_skip(pb, 36); // WBGain[1].. WBView
200 
201  st->codecpar->bits_per_coded_sample = avio_rl32(pb);
202 
203  if (compression == CC_RGB) {
204  if (biBitCount == 8) {
205  st->codecpar->format = AV_PIX_FMT_GRAY8;
206  } else if (biBitCount == 16) {
207  st->codecpar->format = AV_PIX_FMT_GRAY16LE;
208  } else if (biBitCount == 24) {
209  st->codecpar->format = AV_PIX_FMT_BGR24;
210  } else if (biBitCount == 48) {
211  st->codecpar->format = AV_PIX_FMT_BGR48LE;
212  } else {
213  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
214  return AVERROR_INVALIDDATA;
215  }
216  } else if (compression == CC_UNINT) {
217  switch (CFA & 0xFFFFFF) {
218  case CFA_BAYER:
219  if (biBitCount == 8) {
220  st->codecpar->format = AV_PIX_FMT_BAYER_GBRG8;
221  } else if (biBitCount == 16) {
222  st->codecpar->format = AV_PIX_FMT_BAYER_GBRG16LE;
223  } else {
224  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
225  return AVERROR_INVALIDDATA;
226  }
227  break;
228  case CFA_BAYERFLIP:
229  if (biBitCount == 8) {
230  st->codecpar->format = AV_PIX_FMT_BAYER_RGGB8;
231  } else if (biBitCount == 16) {
232  st->codecpar->format = AV_PIX_FMT_BAYER_RGGB16LE;
233  } else {
234  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
235  return AVERROR_INVALIDDATA;
236  }
237  break;
238  default:
239  avpriv_request_sample(avctx, "unsupported Color Field Array (CFA) %i", CFA & 0xFFFFFF);
240  return AVERROR_INVALIDDATA;
241  }
242  } else { //CC_LEAD
243  avpriv_request_sample(avctx, "unsupported compression %i", compression);
244  return AVERROR_INVALIDDATA;
245  }
246 
247  avio_skip(pb, 668); // Conv8Min ... Sensor
248 
249  set_metadata_int(&st->metadata, "shutter_ns", avio_rl32(pb), 0);
250 
251  avio_skip(pb, 24); // EDRShutterNs ... ImHeightAcq
252 
253 #define DESCRIPTION_SIZE 4096
254  description = av_malloc(DESCRIPTION_SIZE + 1);
255  if (!description)
256  return AVERROR(ENOMEM);
257  i = avio_get_str(pb, DESCRIPTION_SIZE, description, DESCRIPTION_SIZE + 1);
258  if (i < DESCRIPTION_SIZE)
259  avio_skip(pb, DESCRIPTION_SIZE - i);
260  if (description[0])
261  av_dict_set(&st->metadata, "description", description, AV_DICT_DONT_STRDUP_VAL);
262  else
263  av_free(description);
264 
265  avio_skip(pb, 1176); // RisingEdge ... cmUser
266 
267  set_metadata_int(&st->metadata, "enable_crop", avio_rl32(pb), 1);
268  set_metadata_int(&st->metadata, "crop_left", avio_rl32(pb), 1);
269  set_metadata_int(&st->metadata, "crop_top", avio_rl32(pb), 1);
270  set_metadata_int(&st->metadata, "crop_right", avio_rl32(pb), 1);
271  set_metadata_int(&st->metadata, "crop_bottom", avio_rl32(pb), 1);
272 
273  /* parse image offsets */
274  avio_seek(pb, offImageOffsets, SEEK_SET);
275  for (i = 0; i < st->duration; i++) {
276  int64_t pos = avio_rl64(pb);
277  if (avio_feof(pb) || pos < 0)
278  return AVERROR_INVALIDDATA;
279 
280  av_add_index_entry(st, pos, i, 0, 0, AVINDEX_KEYFRAME);
281  }
282 
283  return 0;
284 }
285 
286 static int cine_read_packet(AVFormatContext *avctx, AVPacket *pkt)
287 {
288  CineDemuxContext *cine = avctx->priv_data;
289  AVStream *st = avctx->streams[0];
290  FFStream *const sti = ffstream(st);
291  AVIOContext *pb = avctx->pb;
292  int n, size, ret;
293  int64_t ret64;
294 
295  if (cine->pts >= sti->nb_index_entries)
296  return AVERROR_EOF;
297 
298  ret64 = avio_seek(pb, sti->index_entries[cine->pts].pos, SEEK_SET);
299  if (ret64 < 0)
300  return ret64;
301  n = avio_rl32(pb);
302  if (n < 8)
303  return AVERROR_INVALIDDATA;
304  avio_skip(pb, n - 8);
305  size = avio_rl32(pb);
306  if (avio_feof(pb) || size < 0)
307  return AVERROR_INVALIDDATA;
308 
309  if (cine->maxsize && (uint64_t)sti->index_entries[cine->pts].pos + size + n > cine->maxsize)
310  size = cine->maxsize - sti->index_entries[cine->pts].pos - n;
311 
312  ret = av_get_packet(pb, pkt, size);
313  if (ret < 0)
314  return ret;
315 
316  if (ret != size)
317  cine->maxsize = (uint64_t)sti->index_entries[cine->pts].pos + n + ret;
318 
319  pkt->pts = cine->pts++;
320  pkt->stream_index = 0;
321  pkt->flags |= AV_PKT_FLAG_KEY;
322  return 0;
323 }
324 
325 static int cine_read_seek(AVFormatContext *avctx, int stream_index, int64_t timestamp, int flags)
326 {
327  CineDemuxContext *cine = avctx->priv_data;
328 
329  if ((flags & AVSEEK_FLAG_FRAME) || (flags & AVSEEK_FLAG_BYTE))
330  return AVERROR(ENOSYS);
331 
332  if (!(avctx->pb->seekable & AVIO_SEEKABLE_NORMAL))
333  return AVERROR(EIO);
334 
335  cine->pts = timestamp;
336  return 0;
337 }
338 
339 const AVInputFormat ff_cine_demuxer = {
340  .name = "cine",
341  .long_name = NULL_IF_CONFIG_SMALL("Phantom Cine"),
342  .priv_data_size = sizeof(CineDemuxContext),
343  .read_probe = cine_read_probe,
344  .read_header = cine_read_header,
345  .read_packet = cine_read_packet,
346  .read_seek = cine_read_seek,
347 };
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:75
AV_PIX_FMT_BAYER_GBRG16LE
@ AV_PIX_FMT_BAYER_GBRG16LE
bayer, GBGB..(odd line), RGRG..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:258
AV_PIX_FMT_BGR48LE
@ AV_PIX_FMT_BGR48LE
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:139
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: options.c:237
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:57
AVSEEK_FLAG_FRAME
#define AVSEEK_FLAG_FRAME
seeking based on frame number
Definition: avformat.h:2292
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
AV_CODEC_ID_RAWVIDEO
@ AV_CODEC_ID_RAWVIDEO
Definition: codec_id.h:63
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
AVFormatContext::streams
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1281
AVSEEK_FLAG_BYTE
#define AVSEEK_FLAG_BYTE
seeking based on position in bytes
Definition: avformat.h:2290
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:65
AVDictionary
Definition: dict.c:30
BMP_RGB
@ BMP_RGB
Definition: bmp.h:26
intfloat.h
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:429
cine_read_header
static int cine_read_header(AVFormatContext *avctx)
Definition: cinedec.c:93
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
AVINDEX_KEYFRAME
#define AVINDEX_KEYFRAME
Definition: avformat.h:815
DESCRIPTION_SIZE
#define DESCRIPTION_SIZE
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:465
avpriv_set_pts_info
void avpriv_set_pts_info(AVStream *st, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: avformat.c:763
ffstream
static av_always_inline FFStream * ffstream(AVStream *st)
Definition: internal.h:407
av_int2float
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
Definition: intfloat.h:40
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:151
av_add_index_entry
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: seek.c:118
CineDemuxContext::maxsize
uint64_t maxsize
Definition: cinedec.c:36
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:998
avio_rl16
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:743
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:72
description
Tag description
Definition: snow.txt:206
pkt
AVPacket * pkt
Definition: movenc.c:59
AVInputFormat
Definition: avformat.h:656
set_metadata_float
static int set_metadata_float(AVDictionary **dict, const char *key, float value, int allow_zero)
Definition: cinedec.c:83
intreadwrite.h
AV_PIX_FMT_BAYER_RGGB16LE
@ AV_PIX_FMT_BAYER_RGGB16LE
bayer, RGRG..(odd line), GBGB..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:256
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:661
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:455
CC_UNINT
@ CC_UNINT
Uninterpolated color image (CFA field indicates color ordering)
Definition: cinedec.c:43
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:127
AV_RL16
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:94
key
const char * key
Definition: hwcontext_opencl.c:174
cine_read_packet
static int cine_read_packet(AVFormatContext *avctx, AVPacket *pkt)
Definition: cinedec.c:286
AV_PIX_FMT_BAYER_RGGB8
@ AV_PIX_FMT_BAYER_RGGB8
bayer, RGRG..(odd line), GBGB..(even line), 8-bit samples
Definition: pixfmt.h:251
AVFormatContext
Format I/O context.
Definition: avformat.h:1213
internal.h
bmp.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1108
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:532
NULL
#define NULL
Definition: coverity.c:32
read_probe
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
AVFormatContext::pb
AVIOContext * pb
I/O context.
Definition: avformat.h:1255
FFStream::nb_index_entries
int nb_index_entries
Definition: internal.h:254
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:453
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:1019
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
cine_read_probe
static int cine_read_probe(const AVProbeData *p)
Definition: cinedec.c:60
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:79
CFA_VRI
@ CFA_VRI
GBRG/RGGB.
Definition: cinedec.c:49
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:759
AVIOContext
Bytestream IO Context.
Definition: avio.h:162
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
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:263
FFStream
Definition: internal.h:197
avio_get_str
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:895
size
int size
Definition: twinvq_data.h:10344
CineDemuxContext
Definition: cinedec.c:34
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:380
version
version
Definition: libkvazaar.c:313
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:367
AVCodecParameters::height
int height
Definition: codec_par.h:128
AV_PIX_FMT_BAYER_GBRG8
@ AV_PIX_FMT_BAYER_GBRG8
bayer, GBGB..(odd line), RGRG..(even line), 8-bit samples
Definition: pixfmt.h:252
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
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:102
ret
ret
Definition: filter_design.txt:187
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
AVStream
Stream structure.
Definition: avformat.h:948
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:260
pos
unsigned int pos
Definition: spdifenc.c:412
CineDemuxContext::pts
uint64_t pts
Definition: cinedec.c:35
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:41
AVIndexEntry::pos
int64_t pos
Definition: avformat.h:808
AVPacket::stream_index
int stream_index
Definition: packet.h:376
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:347
ff_cine_demuxer
const AVInputFormat ff_cine_demuxer
Definition: cinedec.c:339
FFStream::index_entries
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: internal.h:252
av_dict_set_int
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it.
Definition: dict.c:147
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:280
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_GRAY16LE
@ AV_PIX_FMT_GRAY16LE
Y , 16bpp, little-endian.
Definition: pixfmt.h:98
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:103
CC_LEAD
@ CC_LEAD
LEAD (M)JPEG.
Definition: cinedec.c:42
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:36
AVCodecParameters::format
int format
Definition: codec_par.h:85
CFA_BAYER
@ CFA_BAYER
GB/RG.
Definition: cinedec.c:51
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
set_metadata_int
static int set_metadata_int(AVDictionary **dict, const char *key, int value, int allow_zero)
Definition: cinedec.c:75
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:61
AVPacket
This structure stores compressed data.
Definition: packet.h:351
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
avio_rl64
uint64_t avio_rl64(AVIOContext *s)
Definition: aviobuf.c:767
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
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
CFA_NONE
@ CFA_NONE
GRAY.
Definition: cinedec.c:48
CFA_VRIV6
@ CFA_VRIV6
BGGR/GRBG.
Definition: cinedec.c:50
CC_RGB
@ CC_RGB
Gray.
Definition: cinedec.c:41
snprintf
#define snprintf
Definition: snprintf.h:34
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition: avformat.h:1241
cine_read_seek
static int cine_read_seek(AVFormatContext *avctx, int stream_index, int64_t timestamp, int flags)
Definition: cinedec.c:325
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:375
CFA_BAYERFLIP
@ CFA_BAYERFLIP
RG/GB.
Definition: cinedec.c:52
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