FFmpeg: libavformat/cinedec.c Source File

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 "libavutil/mem.h"
30 #include "libavcodec/bmp.h"
31 #include "libavutil/intfloat.h"
32 #include "avformat.h"
33 #include "demux.h"
34 #include "internal.h"
35 
36  typedef struct {
37   uint64_t pts;
38   uint64_t maxsize;
39 } CineDemuxContext;
40 
41 /** Compression */
42 enum {
43   CC_RGB = 0, /**< Gray */
44   CC_LEAD = 1, /**< LEAD (M)JPEG */
45   CC_UNINT = 2 /**< Uninterpolated color image (CFA field indicates color ordering) */
46 };
47 
48 /** Color Filter Array */
49 enum {
50   CFA_NONE = 0, /**< GRAY */
51   CFA_VRI = 1, /**< GBRG/RGGB */
52   CFA_VRIV6 = 2, /**< BGGR/GRBG */
53   CFA_BAYER = 3, /**< GB/RG */
54   CFA_BAYERFLIP = 4, /**< RG/GB */
55   CFA_BAYERFLIPB = 5, /**< GR/BG */
56   CFA_BAYERFLIPH = 6, /**< BG/GR */
57 };
58 
59  #define CFA_TLGRAY 0x80000000U
60  #define CFA_TRGRAY 0x40000000U
61  #define CFA_BLGRAY 0x20000000U
62  #define CFA_BRGRAY 0x10000000U
63 
64  static int cine_read_probe(const AVProbeData *p)
65 {
66  int HeaderSize;
67  if (p->buf[0] == 'C' && p->buf[1] == 'I' && // Type
68  (HeaderSize = AV_RL16(p->buf + 2)) >= 0x2C && // HeaderSize
69  AV_RL16(p->buf + 4) <= CC_UNINT && // Compression
70  AV_RL16(p->buf + 6) <= 1 && // Version
71  AV_RL32(p->buf + 20) && // ImageCount
72  AV_RL32(p->buf + 24) >= HeaderSize && // OffImageHeader
73  AV_RL32(p->buf + 28) >= HeaderSize && // OffSetup
74  AV_RL32(p->buf + 32) >= HeaderSize) // OffImageOffsets
75  return AVPROBE_SCORE_MAX;
76  return 0;
77 }
78 
79  static int set_metadata_int(AVDictionary **dict, const char *key, int value, int allow_zero)
80 {
81  if (value || allow_zero) {
82  return av_dict_set_int(dict, key, value, 0);
83  }
84  return 0;
85 }
86 
87  static int set_metadata_float(AVDictionary **dict, const char *key, float value, int allow_zero)
88 {
89  if (value != 0 || allow_zero) {
90  char tmp[64];
91  snprintf(tmp, sizeof(tmp), "%f", value);
92  return av_dict_set(dict, key, tmp, 0);
93  }
94  return 0;
95 }
96 
97  static int cine_read_header(AVFormatContext *avctx)
98 {
99  AVIOContext *pb = avctx->pb;
100  AVStream *st;
101  unsigned int version, compression, offImageHeader, offSetup, offImageOffsets, biBitCount, length, CFA;
102  int vflip;
103  char *description;
104  uint64_t i;
105 
106  st = avformat_new_stream(avctx, NULL);
107  if (!st)
108  return AVERROR(ENOMEM);
109  st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
110  st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
111  st->codecpar->codec_tag = 0;
112 
113  /* CINEFILEHEADER structure */
114  avio_skip(pb, 4); // Type, Headersize
115 
116  compression = avio_rl16(pb);
117  version = avio_rl16(pb);
118  if (version != 1) {
119  avpriv_request_sample(avctx, "unknown version %i", version);
120  return AVERROR_INVALIDDATA;
121  }
122 
123  avio_skip(pb, 12); // FirstMovieImage, TotalImageCount, FirstImageNumber
124 
125  st->duration = avio_rl32(pb);
126  offImageHeader = avio_rl32(pb);
127  offSetup = avio_rl32(pb);
128  offImageOffsets = avio_rl32(pb);
129 
130  avio_skip(pb, 8); // TriggerTime
131 
132  /* BITMAPINFOHEADER structure */
133  avio_seek(pb, offImageHeader, SEEK_SET);
134  avio_skip(pb, 4); //biSize
135  st->codecpar->width = avio_rl32(pb);
136  st->codecpar->height = avio_rl32(pb);
137 
138  if (avio_rl16(pb) != 1) // biPlanes
139  return AVERROR_INVALIDDATA;
140 
141  biBitCount = avio_rl16(pb);
142  if (biBitCount != 8 && biBitCount != 16 && biBitCount != 24 && biBitCount != 48) {
143  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
144  return AVERROR_INVALIDDATA;
145  }
146 
147  switch (avio_rl32(pb)) {
148  case BMP_RGB:
149  vflip = 0;
150  break;
151  case 0x100: /* BI_PACKED */
152  st->codecpar->codec_tag = MKTAG('B', 'I', 'T', 0);
153  vflip = 1;
154  break;
155  default:
156  avpriv_request_sample(avctx, "unknown bitmap compression");
157  return AVERROR_INVALIDDATA;
158  }
159 
160  avio_skip(pb, 4); // biSizeImage
161 
162  /* parse SETUP structure */
163  avio_seek(pb, offSetup, SEEK_SET);
164  avio_skip(pb, 140); // FrameRatae16 .. descriptionOld
165  if (avio_rl16(pb) != 0x5453)
166  return AVERROR_INVALIDDATA;
167  length = avio_rl16(pb);
168  if (length < 0x163C) {
169  avpriv_request_sample(avctx, "short SETUP header");
170  return AVERROR_INVALIDDATA;
171  }
172 
173  avio_skip(pb, 616); // Binning .. bFlipH
174  if (!avio_rl32(pb) ^ vflip) {
175  st->codecpar->extradata = av_strdup("BottomUp");
176  if (!st->codecpar->extradata) {
177  st->codecpar->extradata_size = 0;
178  return AVERROR(ENOMEM);
179  }
180  st->codecpar->extradata_size = 9;
181  }
182 
183  avio_skip(pb, 4); // Grid
184 
185  avpriv_set_pts_info(st, 64, 1, avio_rl32(pb));
186 
187  avio_skip(pb, 20); // Shutter .. bEnableColor
188 
189  set_metadata_int(&st->metadata, "camera_version", avio_rl32(pb), 0);
190  set_metadata_int(&st->metadata, "firmware_version", avio_rl32(pb), 0);
191  set_metadata_int(&st->metadata, "software_version", avio_rl32(pb), 0);
192  set_metadata_int(&st->metadata, "recording_timezone", avio_rl32(pb), 0);
193 
194  CFA = avio_rl32(pb);
195 
196  set_metadata_int(&st->metadata, "brightness", avio_rl32(pb), 1);
197  set_metadata_int(&st->metadata, "contrast", avio_rl32(pb), 1);
198  set_metadata_int(&st->metadata, "gamma", avio_rl32(pb), 1);
199 
200  avio_skip(pb, 12 + 16); // Reserved1 .. AutoExpRect
201  set_metadata_float(&st->metadata, "wbgain[0].r", av_int2float(avio_rl32(pb)), 1);
202  set_metadata_float(&st->metadata, "wbgain[0].b", av_int2float(avio_rl32(pb)), 1);
203  avio_skip(pb, 36); // WBGain[1].. WBView
204 
205  st->codecpar->bits_per_coded_sample = avio_rl32(pb);
206 
207  if (compression == CC_RGB) {
208  if (biBitCount == 8) {
209  st->codecpar->format = AV_PIX_FMT_GRAY8;
210  } else if (biBitCount == 16) {
211  st->codecpar->format = AV_PIX_FMT_GRAY16LE;
212  } else if (biBitCount == 24) {
213  st->codecpar->format = AV_PIX_FMT_BGR24;
214  } else if (biBitCount == 48) {
215  st->codecpar->format = AV_PIX_FMT_BGR48LE;
216  } else {
217  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
218  return AVERROR_INVALIDDATA;
219  }
220  } else if (compression == CC_UNINT) {
221  switch (CFA & 0xFFFFFF) {
222  case CFA_BAYER:
223  if (biBitCount == 8) {
224  st->codecpar->format = AV_PIX_FMT_BAYER_GBRG8;
225  } else if (biBitCount == 16) {
226  st->codecpar->format = AV_PIX_FMT_BAYER_GBRG16LE;
227  } else {
228  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
229  return AVERROR_INVALIDDATA;
230  }
231  break;
232  case CFA_BAYERFLIP:
233  if (biBitCount == 8) {
234  st->codecpar->format = AV_PIX_FMT_BAYER_RGGB8;
235  } else if (biBitCount == 16) {
236  st->codecpar->format = AV_PIX_FMT_BAYER_RGGB16LE;
237  } else {
238  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
239  return AVERROR_INVALIDDATA;
240  }
241  break;
242  case CFA_BAYERFLIPB:
243  if (biBitCount == 8) {
244  st->codecpar->format = AV_PIX_FMT_BAYER_GRBG8;
245  } else if (biBitCount == 16) {
246  st->codecpar->format = AV_PIX_FMT_BAYER_GRBG16LE;
247  } else {
248  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
249  return AVERROR_INVALIDDATA;
250  }
251  break;
252  case CFA_BAYERFLIPH:
253  if (biBitCount == 8) {
254  st->codecpar->format = AV_PIX_FMT_BAYER_BGGR8;
255  } else if (biBitCount == 16) {
256  st->codecpar->format = AV_PIX_FMT_BAYER_BGGR16LE;
257  } else {
258  avpriv_request_sample(avctx, "unsupported biBitCount %i", biBitCount);
259  return AVERROR_INVALIDDATA;
260  }
261  break;
262  default:
263  avpriv_request_sample(avctx, "unsupported Color Field Array (CFA) %i", CFA & 0xFFFFFF);
264  return AVERROR_INVALIDDATA;
265  }
266  } else { //CC_LEAD
267  avpriv_request_sample(avctx, "unsupported compression %i", compression);
268  return AVERROR_INVALIDDATA;
269  }
270 
271  avio_skip(pb, 668); // Conv8Min ... Sensor
272 
273  set_metadata_int(&st->metadata, "shutter_ns", avio_rl32(pb), 0);
274 
275  avio_skip(pb, 24); // EDRShutterNs ... ImHeightAcq
276 
277 #define DESCRIPTION_SIZE 4096
278  description = av_malloc(DESCRIPTION_SIZE + 1);
279  if (!description)
280  return AVERROR(ENOMEM);
281  i = avio_get_str(pb, DESCRIPTION_SIZE, description, DESCRIPTION_SIZE + 1);
282  if (i < DESCRIPTION_SIZE)
283  avio_skip(pb, DESCRIPTION_SIZE - i);
284  if (description[0])
285  av_dict_set(&st->metadata, "description", description, AV_DICT_DONT_STRDUP_VAL);
286  else
287  av_free(description);
288 
289  avio_skip(pb, 1176); // RisingEdge ... cmUser
290 
291  set_metadata_int(&st->metadata, "enable_crop", avio_rl32(pb), 1);
292  set_metadata_int(&st->metadata, "crop_left", avio_rl32(pb), 1);
293  set_metadata_int(&st->metadata, "crop_top", avio_rl32(pb), 1);
294  set_metadata_int(&st->metadata, "crop_right", avio_rl32(pb), 1);
295  set_metadata_int(&st->metadata, "crop_bottom", avio_rl32(pb), 1);
296 
297  /* parse image offsets */
298  avio_seek(pb, offImageOffsets, SEEK_SET);
299  for (i = 0; i < st->duration; i++) {
300  int64_t pos = avio_rl64(pb);
301  if (avio_feof(pb) || pos < 0)
302  return AVERROR_INVALIDDATA;
303 
304  av_add_index_entry(st, pos, i, 0, 0, AVINDEX_KEYFRAME);
305  }
306 
307  return 0;
308 }
309 
310  static int cine_read_packet(AVFormatContext *avctx, AVPacket *pkt)
311 {
312  CineDemuxContext *cine = avctx->priv_data;
313  AVStream *st = avctx->streams[0];
314  FFStream *const sti = ffstream(st);
315  AVIOContext *pb = avctx->pb;
316  int n, size, ret;
317  int64_t ret64;
318 
319  if (cine->pts >= sti->nb_index_entries)
320  return AVERROR_EOF;
321 
322  ret64 = avio_seek(pb, sti->index_entries[cine->pts].pos, SEEK_SET);
323  if (ret64 < 0)
324  return ret64;
325  n = avio_rl32(pb);
326  if (n < 8)
327  return AVERROR_INVALIDDATA;
328  avio_skip(pb, n - 8);
329  size = avio_rl32(pb);
330  if (avio_feof(pb) || size < 0)
331  return AVERROR_INVALIDDATA;
332 
333  if (cine->maxsize && (uint64_t)sti->index_entries[cine->pts].pos + size + n > cine->maxsize)
334  size = cine->maxsize - sti->index_entries[cine->pts].pos - n;
335 
336  ret = av_get_packet(pb, pkt, size);
337  if (ret < 0)
338  return ret;
339 
340  if (ret != size)
341  cine->maxsize = (uint64_t)sti->index_entries[cine->pts].pos + n + ret;
342 
343  pkt->pts = cine->pts++;
344  pkt->stream_index = 0;
345  pkt->flags |= AV_PKT_FLAG_KEY;
346  return 0;
347 }
348 
349  static int cine_read_seek(AVFormatContext *avctx, int stream_index, int64_t timestamp, int flags)
350 {
351  CineDemuxContext *cine = avctx->priv_data;
352 
353  if ((flags & AVSEEK_FLAG_FRAME) || (flags & AVSEEK_FLAG_BYTE))
354  return AVERROR(ENOSYS);
355 
356  if (!(avctx->pb->seekable & AVIO_SEEKABLE_NORMAL))
357  return AVERROR(EIO);
358 
359  cine->pts = timestamp;
360  return 0;
361 }
362 
363  const FFInputFormat ff_cine_demuxer = {
364  .p.name = "cine",
365  .p.long_name = NULL_IF_CONFIG_SMALL("Phantom Cine"),
366  .priv_data_size = sizeof(CineDemuxContext),
367  .read_probe = cine_read_probe,
368  .read_header = cine_read_header,
369  .read_packet = cine_read_packet,
370  .read_seek = cine_read_seek,
371 };
flags
const SwsFlags flags[]
Definition: swscale.c:61
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:69
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:293
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:146
CC_RGB
@ CC_RGB
Gray.
Definition: cinedec.c:43
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
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:51
AVSEEK_FLAG_FRAME
#define AVSEEK_FLAG_FRAME
seeking based on frame number
Definition: avformat.h:2377
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
int64_t
long long int64_t
Definition: coverity.c:34
AV_CODEC_ID_RAWVIDEO
@ AV_CODEC_ID_RAWVIDEO
Definition: codec_id.h:65
CFA_BAYERFLIPB
@ CFA_BAYERFLIPB
GR/BG.
Definition: cinedec.c:55
ff_cine_demuxer
const FFInputFormat ff_cine_demuxer
Definition: cinedec.c:363
AVFormatContext::streams
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1332
AVSEEK_FLAG_BYTE
#define AVSEEK_FLAG_BYTE
seeking based on position in bytes
Definition: avformat.h:2375
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:76
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:59
AVDictionary
Definition: dict.c:32
CFA_BAYER
@ CFA_BAYER
GB/RG.
Definition: cinedec.c:53
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:643
cine_read_header
static int cine_read_header(AVFormatContext *avctx)
Definition: cinedec.c:97
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
AVINDEX_KEYFRAME
#define AVINDEX_KEYFRAME
Definition: avformat.h:606
DESCRIPTION_SIZE
#define DESCRIPTION_SIZE
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:463
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:777
ffstream
static av_always_inline FFStream * ffstream(AVStream *st)
Definition: internal.h:347
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:122
CineDemuxContext::maxsize
uint64_t maxsize
Definition: cinedec.c:38
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:803
avio_rl16
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:717
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:79
description
Tag description
Definition: snow.txt:206
pkt
AVPacket * pkt
Definition: movenc.c:60
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_read_callback.c:42
set_metadata_float
static int set_metadata_float(AVDictionary **dict, const char *key, float value, int allow_zero)
Definition: cinedec.c:87
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:291
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:549
AV_PIX_FMT_BAYER_BGGR8
@ AV_PIX_FMT_BAYER_BGGR8
bayer, BGBG..(odd line), GRGR..(even line), 8-bit samples
Definition: pixfmt.h:285
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:134
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:189
cine_read_packet
static int cine_read_packet(AVFormatContext *avctx, AVPacket *pkt)
Definition: cinedec.c:310
tmp
static uint8_t tmp[40]
Definition: aes_ctr.c:52
AV_PIX_FMT_BAYER_RGGB8
@ AV_PIX_FMT_BAYER_RGGB8
bayer, RGRG..(odd line), GBGB..(even line), 8-bit samples
Definition: pixfmt.h:286
AV_PIX_FMT_BAYER_GRBG16LE
@ AV_PIX_FMT_BAYER_GRBG16LE
bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:295
AVFormatContext
Format I/O context.
Definition: avformat.h:1264
internal.h
bmp.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:767
CFA_VRIV6
@ CFA_VRIV6
BGGR/GRBG.
Definition: cinedec.c:52
NULL
#define NULL
Definition: coverity.c:32
CFA_NONE
@ CFA_NONE
GRAY.
Definition: cinedec.c:50
AVFormatContext::pb
AVIOContext * pb
I/O context.
Definition: avformat.h:1306
FFStream::nb_index_entries
int nb_index_entries
Definition: internal.h:186
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:451
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:824
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
cine_read_probe
static int cine_read_probe(const AVProbeData *p)
Definition: cinedec.c:64
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:73
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:733
AVIOContext
Bytestream IO Context.
Definition: avio.h:160
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:94
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:261
FFStream
Definition: internal.h:128
AV_PIX_FMT_BAYER_BGGR16LE
@ AV_PIX_FMT_BAYER_BGGR16LE
bayer, BGBG..(odd line), GRGR..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:289
CFA_VRI
@ CFA_VRI
GBRG/RGGB.
Definition: cinedec.c:51
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:869
size
int size
Definition: twinvq_data.h:10344
CFA_BAYERFLIPH
@ CFA_BAYERFLIPH
BG/GR.
Definition: cinedec.c:56
CineDemuxContext
Definition: cinedec.c:36
FFInputFormat::p
AVInputFormat p
The public AVInputFormat.
Definition: demux.h:51
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:594
read_header
static int read_header(FFV1Context *f, RangeCoder *c)
Definition: ffv1dec.c:498
version
version
Definition: libkvazaar.c:313
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:581
AVCodecParameters::height
int height
Definition: codec_par.h:135
CFA_BAYERFLIP
@ CFA_BAYERFLIP
RG/GB.
Definition: cinedec.c:54
AV_PIX_FMT_BAYER_GBRG8
@ AV_PIX_FMT_BAYER_GBRG8
bayer, GBGB..(odd line), RGRG..(even line), 8-bit samples
Definition: pixfmt.h:287
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
demux.h
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:98
CC_LEAD
@ CC_LEAD
LEAD (M)JPEG.
Definition: cinedec.c:44
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:744
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:236
pos
unsigned int pos
Definition: spdifenc.c:414
CineDemuxContext::pts
uint64_t pts
Definition: cinedec.c:37
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:599
Windows::Graphics::DirectX::Direct3D11::p
IDirect3DDxgiInterfaceAccess _COM_Outptr_ void ** p
Definition: vsrc_gfxcapture_winrt.hpp:53
AVPacket::stream_index
int stream_index
Definition: packet.h:590
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:321
FFStream::index_entries
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: internal.h:184
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:177
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:272
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:200
read_probe
static int read_probe(const AVProbeData *p)
Definition: cdg.c:30
AV_PIX_FMT_GRAY16LE
@ AV_PIX_FMT_GRAY16LE
Y , 16bpp, little-endian.
Definition: pixfmt.h:105
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:110
mem.h
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:37
AVCodecParameters::format
int format
Definition: codec_par.h:92
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
set_metadata_int
static int set_metadata_int(AVDictionary **dict, const char *key, int value, int allow_zero)
Definition: cinedec.c:79
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:55
AVPacket
This structure stores compressed data.
Definition: packet.h:565
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:86
FFInputFormat
Definition: demux.h:47
avio_rl64
uint64_t avio_rl64(AVIOContext *s)
Definition: aviobuf.c:741
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
CC_UNINT
@ CC_UNINT
Uninterpolated color image (CFA field indicates color ordering)
Definition: cinedec.c:45
snprintf
#define snprintf
Definition: snprintf.h:34
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition: avformat.h:1292
AV_PIX_FMT_BAYER_GRBG8
@ AV_PIX_FMT_BAYER_GRBG8
bayer, GRGR..(odd line), BGBG..(even line), 8-bit samples
Definition: pixfmt.h:288
cine_read_seek
static int cine_read_seek(AVFormatContext *avctx, int stream_index, int64_t timestamp, int flags)
Definition: cinedec.c:349
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:349
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