FFmpeg
yuv4mpegdec.c
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1 /*
2  * YUV4MPEG demuxer
3  * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
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 "libavutil/imgutils.h"
23 
24 #include "avformat.h"
25 #include "internal.h"
26 #include "yuv4mpeg.h"
27 
28 /* Header size increased to allow room for optional flags */
29 #define MAX_YUV4_HEADER 96
30 #define MAX_FRAME_HEADER 80
31 
33 {
34  char header[MAX_YUV4_HEADER + 10]; // Include headroom for
35  // the longest option
36  char *tokstart, *tokend, *header_end;
37  int i;
38  AVIOContext *pb = s->pb;
39  int width = -1, height = -1, raten = 0,
40  rated = 0, aspectn = 0, aspectd = 0;
42  enum AVChromaLocation chroma_sample_location = AVCHROMA_LOC_UNSPECIFIED;
43  enum AVFieldOrder field_order = AV_FIELD_UNKNOWN;
45  AVStream *st;
46 
47  for (i = 0; i < MAX_YUV4_HEADER; i++) {
48  header[i] = avio_r8(pb);
49  if (header[i] == '\n') {
50  header[i + 1] = 0x20; // Add a space after last option.
51  // Makes parsing "444" vs "444alpha" easier.
52  header[i + 2] = 0;
53  break;
54  }
55  }
56  if (i == MAX_YUV4_HEADER) {
57  av_log(s, AV_LOG_ERROR, "Header too large.\n");
58  return AVERROR(EINVAL);
59  }
60  if (strncmp(header, Y4M_MAGIC, strlen(Y4M_MAGIC))) {
61  av_log(s, AV_LOG_ERROR, "Invalid magic number for yuv4mpeg.\n");
62  return AVERROR(EINVAL);
63  }
64 
65  header_end = &header[i + 1]; // Include space
66  for (tokstart = &header[strlen(Y4M_MAGIC) + 1];
67  tokstart < header_end; tokstart++) {
68  if (*tokstart == 0x20)
69  continue;
70  switch (*tokstart++) {
71  case 'W': // Width. Required.
72  width = strtol(tokstart, &tokend, 10);
73  tokstart = tokend;
74  break;
75  case 'H': // Height. Required.
76  height = strtol(tokstart, &tokend, 10);
77  tokstart = tokend;
78  break;
79  case 'C': // Color space
80  if (strncmp("420jpeg", tokstart, 7) == 0) {
82  chroma_sample_location = AVCHROMA_LOC_CENTER;
83  } else if (strncmp("420mpeg2", tokstart, 8) == 0) {
85  chroma_sample_location = AVCHROMA_LOC_LEFT;
86  } else if (strncmp("420paldv", tokstart, 8) == 0) {
88  chroma_sample_location = AVCHROMA_LOC_TOPLEFT;
89  } else if (strncmp("420p16", tokstart, 6) == 0) {
91  } else if (strncmp("422p16", tokstart, 6) == 0) {
93  } else if (strncmp("444p16", tokstart, 6) == 0) {
95  } else if (strncmp("420p14", tokstart, 6) == 0) {
97  } else if (strncmp("422p14", tokstart, 6) == 0) {
99  } else if (strncmp("444p14", tokstart, 6) == 0) {
101  } else if (strncmp("420p12", tokstart, 6) == 0) {
103  } else if (strncmp("422p12", tokstart, 6) == 0) {
105  } else if (strncmp("444p12", tokstart, 6) == 0) {
107  } else if (strncmp("420p10", tokstart, 6) == 0) {
109  } else if (strncmp("422p10", tokstart, 6) == 0) {
111  } else if (strncmp("444p10", tokstart, 6) == 0) {
113  } else if (strncmp("420p9", tokstart, 5) == 0) {
115  } else if (strncmp("422p9", tokstart, 5) == 0) {
117  } else if (strncmp("444p9", tokstart, 5) == 0) {
119  } else if (strncmp("420", tokstart, 3) == 0) {
121  chroma_sample_location = AVCHROMA_LOC_CENTER;
122  } else if (strncmp("411", tokstart, 3) == 0) {
124  } else if (strncmp("422", tokstart, 3) == 0) {
126  } else if (strncmp("444alpha", tokstart, 8) == 0 ) {
128  } else if (strncmp("444", tokstart, 3) == 0) {
130  } else if (strncmp("mono16", tokstart, 6) == 0) {
132  } else if (strncmp("mono12", tokstart, 6) == 0) {
134  } else if (strncmp("mono10", tokstart, 6) == 0) {
136  } else if (strncmp("mono9", tokstart, 5) == 0) {
138  } else if (strncmp("mono", tokstart, 4) == 0) {
140  } else {
141  av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains an unknown "
142  "pixel format.\n");
143  return AVERROR_INVALIDDATA;
144  }
145  while (tokstart < header_end && *tokstart != 0x20)
146  tokstart++;
147  break;
148  case 'I': // Interlace type
149  switch (*tokstart++){
150  case '?':
151  field_order = AV_FIELD_UNKNOWN;
152  break;
153  case 'p':
154  field_order = AV_FIELD_PROGRESSIVE;
155  break;
156  case 't':
157  field_order = AV_FIELD_TT;
158  break;
159  case 'b':
160  field_order = AV_FIELD_BB;
161  break;
162  case 'm':
163  av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains mixed "
164  "interlaced and non-interlaced frames.\n");
165  default:
166  av_log(s, AV_LOG_ERROR, "YUV4MPEG has invalid header.\n");
167  return AVERROR(EINVAL);
168  }
169  break;
170  case 'F': // Frame rate
171  sscanf(tokstart, "%d:%d", &raten, &rated); // 0:0 if unknown
172  while (tokstart < header_end && *tokstart != 0x20)
173  tokstart++;
174  break;
175  case 'A': // Pixel aspect
176  sscanf(tokstart, "%d:%d", &aspectn, &aspectd); // 0:0 if unknown
177  while (tokstart < header_end && *tokstart != 0x20)
178  tokstart++;
179  break;
180  case 'X': // Vendor extensions
181  if (strncmp("YSCSS=", tokstart, 6) == 0) {
182  // Older nonstandard pixel format representation
183  tokstart += 6;
184  if (strncmp("420JPEG", tokstart, 7) == 0)
185  alt_pix_fmt = AV_PIX_FMT_YUV420P;
186  else if (strncmp("420MPEG2", tokstart, 8) == 0)
187  alt_pix_fmt = AV_PIX_FMT_YUV420P;
188  else if (strncmp("420PALDV", tokstart, 8) == 0)
189  alt_pix_fmt = AV_PIX_FMT_YUV420P;
190  else if (strncmp("420P9", tokstart, 5) == 0)
191  alt_pix_fmt = AV_PIX_FMT_YUV420P9;
192  else if (strncmp("422P9", tokstart, 5) == 0)
193  alt_pix_fmt = AV_PIX_FMT_YUV422P9;
194  else if (strncmp("444P9", tokstart, 5) == 0)
195  alt_pix_fmt = AV_PIX_FMT_YUV444P9;
196  else if (strncmp("420P10", tokstart, 6) == 0)
197  alt_pix_fmt = AV_PIX_FMT_YUV420P10;
198  else if (strncmp("422P10", tokstart, 6) == 0)
199  alt_pix_fmt = AV_PIX_FMT_YUV422P10;
200  else if (strncmp("444P10", tokstart, 6) == 0)
201  alt_pix_fmt = AV_PIX_FMT_YUV444P10;
202  else if (strncmp("420P12", tokstart, 6) == 0)
203  alt_pix_fmt = AV_PIX_FMT_YUV420P12;
204  else if (strncmp("422P12", tokstart, 6) == 0)
205  alt_pix_fmt = AV_PIX_FMT_YUV422P12;
206  else if (strncmp("444P12", tokstart, 6) == 0)
207  alt_pix_fmt = AV_PIX_FMT_YUV444P12;
208  else if (strncmp("420P14", tokstart, 6) == 0)
209  alt_pix_fmt = AV_PIX_FMT_YUV420P14;
210  else if (strncmp("422P14", tokstart, 6) == 0)
211  alt_pix_fmt = AV_PIX_FMT_YUV422P14;
212  else if (strncmp("444P14", tokstart, 6) == 0)
213  alt_pix_fmt = AV_PIX_FMT_YUV444P14;
214  else if (strncmp("420P16", tokstart, 6) == 0)
215  alt_pix_fmt = AV_PIX_FMT_YUV420P16;
216  else if (strncmp("422P16", tokstart, 6) == 0)
217  alt_pix_fmt = AV_PIX_FMT_YUV422P16;
218  else if (strncmp("444P16", tokstart, 6) == 0)
219  alt_pix_fmt = AV_PIX_FMT_YUV444P16;
220  else if (strncmp("411", tokstart, 3) == 0)
221  alt_pix_fmt = AV_PIX_FMT_YUV411P;
222  else if (strncmp("422", tokstart, 3) == 0)
223  alt_pix_fmt = AV_PIX_FMT_YUV422P;
224  else if (strncmp("444", tokstart, 3) == 0)
225  alt_pix_fmt = AV_PIX_FMT_YUV444P;
226  } else if (strncmp("COLORRANGE=", tokstart, 11) == 0) {
227  tokstart += 11;
228  if (strncmp("FULL",tokstart, 4) == 0)
230  else if (strncmp("LIMITED", tokstart, 7) == 0)
232  }
233  while (tokstart < header_end && *tokstart != 0x20)
234  tokstart++;
235  break;
236  }
237  }
238 
239  if (width == -1 || height == -1) {
240  av_log(s, AV_LOG_ERROR, "YUV4MPEG has invalid header.\n");
241  return AVERROR_INVALIDDATA;
242  }
243 
244  if (pix_fmt == AV_PIX_FMT_NONE) {
245  if (alt_pix_fmt == AV_PIX_FMT_NONE)
247  else
248  pix_fmt = alt_pix_fmt;
249  }
250 
251  if (raten <= 0 || rated <= 0) {
252  // Frame rate unknown
253  raten = 25;
254  rated = 1;
255  }
256 
257  if (aspectn == 0 && aspectd == 0) {
258  // Pixel aspect unknown
259  aspectd = 1;
260  }
261 
262  st = avformat_new_stream(s, NULL);
263  if (!st)
264  return AVERROR(ENOMEM);
265  st->codecpar->width = width;
266  st->codecpar->height = height;
267  av_reduce(&raten, &rated, raten, rated, (1UL << 31) - 1);
268  avpriv_set_pts_info(st, 64, rated, raten);
269  st->avg_frame_rate = av_inv_q(st->time_base);
270  st->codecpar->format = pix_fmt;
273  st->sample_aspect_ratio = (AVRational){ aspectn, aspectd };
274  st->codecpar->chroma_location = chroma_sample_location;
276  st->codecpar->field_order = field_order;
278  if ((int) s->packet_size < 0)
279  return s->packet_size;
280  s->internal->data_offset = avio_tell(pb);
281 
282  st->duration = (avio_size(pb) - avio_tell(pb)) / s->packet_size;
283 
284  return 0;
285 }
286 
288 {
289  int i;
290  char header[MAX_FRAME_HEADER+1];
291  int ret;
292  int64_t off = avio_tell(s->pb);
293 
294  for (i = 0; i < MAX_FRAME_HEADER; i++) {
295  header[i] = avio_r8(s->pb);
296  if (header[i] == '\n') {
297  header[i + 1] = 0;
298  break;
299  }
300  }
301  if (s->pb->error)
302  return s->pb->error;
303  else if (s->pb->eof_reached)
304  return AVERROR_EOF;
305  else if (i == MAX_FRAME_HEADER)
306  return AVERROR_INVALIDDATA;
307 
308  if (strncmp(header, Y4M_FRAME_MAGIC, strlen(Y4M_FRAME_MAGIC)))
309  return AVERROR_INVALIDDATA;
310 
311  ret = av_get_packet(s->pb, pkt, s->packet_size - Y4M_FRAME_MAGIC_LEN);
312  if (ret < 0)
313  return ret;
314  else if (ret != s->packet_size - Y4M_FRAME_MAGIC_LEN) {
315  return s->pb->eof_reached ? AVERROR_EOF : AVERROR(EIO);
316  }
317  pkt->stream_index = 0;
318  pkt->pts = (off - s->internal->data_offset) / s->packet_size;
319  pkt->duration = 1;
320  return 0;
321 }
322 
323 static int yuv4_read_seek(AVFormatContext *s, int stream_index,
324  int64_t pts, int flags)
325 {
326  int64_t pos;
327 
329  pts = FFMAX(0, pts - 1);
330  if (pts < 0)
331  return -1;
332  pos = pts * s->packet_size;
333 
334  if (avio_seek(s->pb, pos + s->internal->data_offset, SEEK_SET) < 0)
335  return -1;
336  return 0;
337 }
338 
339 static int yuv4_probe(const AVProbeData *pd)
340 {
341  /* check file header */
342  if (strncmp(pd->buf, Y4M_MAGIC, sizeof(Y4M_MAGIC) - 1) == 0)
343  return AVPROBE_SCORE_MAX;
344  else
345  return 0;
346 }
347 
349  .name = "yuv4mpegpipe",
350  .long_name = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"),
351  .read_probe = yuv4_probe,
352  .read_header = yuv4_read_header,
353  .read_packet = yuv4_read_packet,
354  .read_seek = yuv4_read_seek,
355  .extensions = "y4m",
356 };
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
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:4553
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:55
AV_CODEC_ID_RAWVIDEO
@ AV_CODEC_ID_RAWVIDEO
Definition: codec_id.h:62
AVCOL_RANGE_JPEG
@ AVCOL_RANGE_JPEG
Full range content.
Definition: pixfmt.h:586
Y4M_FRAME_MAGIC_LEN
#define Y4M_FRAME_MAGIC_LEN
Definition: yuv4mpeg.h:26
AVStream::avg_frame_rate
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
Y4M_MAGIC
#define Y4M_MAGIC
Definition: yuv4mpeg.h:24
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
MAX_FRAME_HEADER
#define MAX_FRAME_HEADER
Definition: yuv4mpegdec.c:30
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
avio_size
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:342
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
AV_FIELD_TT
@ AV_FIELD_TT
Definition: codec_par.h:39
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
pts
static int64_t pts
Definition: transcode_aac.c:652
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:922
av_reduce
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
Y4M_FRAME_MAGIC
#define Y4M_FRAME_MAGIC
Definition: yuv4mpeg.h:25
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
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:194
AVInputFormat
Definition: avformat.h:640
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:257
yuv4_probe
static int yuv4_probe(const AVProbeData *pd)
Definition: yuv4mpegdec.c:339
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:645
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:126
AV_FIELD_UNKNOWN
@ AV_FIELD_UNKNOWN
Definition: codec_par.h:37
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:40
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
color_range
color_range
Definition: vf_selectivecolor.c:44
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
AVFormatContext
Format I/O context.
Definition: avformat.h:1231
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
AVSEEK_FLAG_BACKWARD
#define AVSEEK_FLAG_BACKWARD
Definition: avformat.h:2414
AVStream::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:902
NULL
#define NULL
Definition: coverity.c:32
AVCHROMA_LOC_LEFT
@ AVCHROMA_LOC_LEFT
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:607
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVCHROMA_LOC_TOPLEFT
@ AVCHROMA_LOC_TOPLEFT
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
Definition: pixfmt.h:609
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:441
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:552
yuv4_read_packet
static int yuv4_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: yuv4mpegdec.c:287
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
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
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
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:4999
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
AVCHROMA_LOC_UNSPECIFIED
@ AVCHROMA_LOC_UNSPECIFIED
Definition: pixfmt.h:606
AVStream::sample_aspect_ratio
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:935
header
static const uint8_t header[24]
Definition: sdr2.c:67
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:624
height
#define height
av_image_get_buffer_size
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters.
Definition: imgutils.c:466
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
AVChromaLocation
AVChromaLocation
Location of chroma samples.
Definition: pixfmt.h:605
AV_FIELD_BB
@ AV_FIELD_BB
Definition: codec_par.h:40
i
int i
Definition: input.c:407
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
AVCodecParameters::height
int height
Definition: codec_par.h:127
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AVCodecParameters::color_range
enum AVColorRange color_range
Video only.
Definition: codec_par.h:146
yuv4mpeg.h
AVCOL_RANGE_MPEG
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
Definition: pixfmt.h:569
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
AVCodecParameters::field_order
enum AVFieldOrder field_order
Video only.
Definition: codec_par.h:141
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:310
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:873
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
AVCodecParameters::chroma_location
enum AVChromaLocation chroma_location
Definition: codec_par.h:150
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
AVCHROMA_LOC_CENTER
@ AVCHROMA_LOC_CENTER
MPEG-1 4:2:0, JPEG 4:2:0, H.263 4:2:0.
Definition: pixfmt.h:608
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
yuv4_read_header
static int yuv4_read_header(AVFormatContext *s)
Definition: yuv4mpegdec.c:32
AVPacket::stream_index
int stream_index
Definition: packet.h:371
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
MAX_YUV4_HEADER
#define MAX_YUV4_HEADER
Definition: yuv4mpegdec.c:29
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
AV_FIELD_PROGRESSIVE
@ AV_FIELD_PROGRESSIVE
Definition: codec_par.h:38
AVCodecParameters::format
int format
Definition: codec_par.h:84
ff_yuv4mpegpipe_demuxer
AVInputFormat ff_yuv4mpegpipe_demuxer
Definition: yuv4mpegdec.c:348
yuv4_read_seek
static int yuv4_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
Definition: yuv4mpegdec.c:323
AVFieldOrder
AVFieldOrder
Definition: codec_par.h:36
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:346
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
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:59
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
AVColorRange
AVColorRange
Visual content value range.
Definition: pixfmt.h:551
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407