FFmpeg
cri.c
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1 /*
2  * CRI image decoder
3  *
4  * Copyright (c) 2020 Paul B Mahol
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * Cintel RAW image decoder
26  */
27 
28 #define BITSTREAM_READER_LE
29 
30 #include "libavutil/intfloat.h"
31 #include "libavutil/display.h"
32 #include "avcodec.h"
33 #include "bytestream.h"
34 #include "codec_internal.h"
35 #include "decode.h"
36 #include "get_bits.h"
37 #include "thread.h"
38 
39 typedef struct CRIContext {
40  AVCodecContext *jpeg_avctx; // wrapper context for MJPEG
41  AVPacket *jpkt; // encoded JPEG tile
42  AVFrame *jpgframe; // decoded JPEG tile
43 
46  const uint8_t *data;
47  unsigned data_size;
48  uint64_t tile_size[4];
49 } CRIContext;
50 
52 {
53  CRIContext *s = avctx->priv_data;
54  const AVCodec *codec;
55  int ret;
56 
57  s->jpgframe = av_frame_alloc();
58  if (!s->jpgframe)
59  return AVERROR(ENOMEM);
60 
61  s->jpkt = av_packet_alloc();
62  if (!s->jpkt)
63  return AVERROR(ENOMEM);
64 
66  if (!codec)
67  return AVERROR_BUG;
68  s->jpeg_avctx = avcodec_alloc_context3(codec);
69  if (!s->jpeg_avctx)
70  return AVERROR(ENOMEM);
71  s->jpeg_avctx->flags = avctx->flags;
72  s->jpeg_avctx->flags2 = avctx->flags2;
73  s->jpeg_avctx->idct_algo = avctx->idct_algo;
74  ret = avcodec_open2(s->jpeg_avctx, codec, NULL);
75  if (ret < 0)
76  return ret;
77 
78  return 0;
79 }
80 
81 static void unpack_10bit(GetByteContext *gb, uint16_t *dst, int shift,
82  int w, int h, ptrdiff_t stride)
83 {
84  int count = w * h;
85  int pos = 0;
86 
87  while (count > 0) {
88  uint32_t a0, a1, a2, a3;
89  if (bytestream2_get_bytes_left(gb) < 4)
90  break;
91  a0 = bytestream2_get_le32(gb);
92  a1 = bytestream2_get_le32(gb);
93  a2 = bytestream2_get_le32(gb);
94  a3 = bytestream2_get_le32(gb);
95  dst[pos] = (((a0 >> 1) & 0xE00) | (a0 & 0x1FF)) << shift;
96  pos++;
97  if (pos >= w) {
98  if (count == 1)
99  break;
100  dst += stride;
101  pos = 0;
102  }
103  dst[pos] = (((a0 >> 13) & 0x3F) | ((a0 >> 14) & 0xFC0)) << shift;
104  pos++;
105  if (pos >= w) {
106  if (count == 2)
107  break;
108  dst += stride;
109  pos = 0;
110  }
111  dst[pos] = (((a0 >> 26) & 7) | ((a1 & 0x1FF) << 3)) << shift;
112  pos++;
113  if (pos >= w) {
114  if (count == 3)
115  break;
116  dst += stride;
117  pos = 0;
118  }
119  dst[pos] = (((a1 >> 10) & 0x1FF) | ((a1 >> 11) & 0xE00)) << shift;
120  pos++;
121  if (pos >= w) {
122  if (count == 4)
123  break;
124  dst += stride;
125  pos = 0;
126  }
127  dst[pos] = (((a1 >> 23) & 0x3F) | ((a2 & 0x3F) << 6)) << shift;
128  pos++;
129  if (pos >= w) {
130  if (count == 5)
131  break;
132  dst += stride;
133  pos = 0;
134  }
135  dst[pos] = (((a2 >> 7) & 0xFF8) | ((a2 >> 6) & 7)) << shift;
136  pos++;
137  if (pos >= w) {
138  if (count == 6)
139  break;
140  dst += stride;
141  pos = 0;
142  }
143  dst[pos] = (((a3 & 7) << 9) | ((a2 >> 20) & 0x1FF)) << shift;
144  pos++;
145  if (pos >= w) {
146  if (count == 7)
147  break;
148  dst += stride;
149  pos = 0;
150  }
151  dst[pos] = (((a3 >> 4) & 0xFC0) | ((a3 >> 3) & 0x3F)) << shift;
152  pos++;
153  if (pos >= w) {
154  if (count == 8)
155  break;
156  dst += stride;
157  pos = 0;
158  }
159  dst[pos] = (((a3 >> 16) & 7) | ((a3 >> 17) & 0xFF8)) << shift;
160  pos++;
161  if (pos >= w) {
162  if (count == 9)
163  break;
164  dst += stride;
165  pos = 0;
166  }
167 
168  count -= 9;
169  }
170 }
171 
173  int *got_frame, AVPacket *avpkt)
174 {
175  CRIContext *s = avctx->priv_data;
176  GetByteContext *gb = &s->gb;
177  int ret, bps, hflip = 0, vflip = 0;
178  AVFrameSideData *rotation;
179  int compressed = 0;
180 
181  s->data = NULL;
182  s->data_size = 0;
183 
184  bytestream2_init(gb, avpkt->data, avpkt->size);
185 
186  while (bytestream2_get_bytes_left(gb) > 8) {
187  char codec_name[1024];
188  uint32_t key, length;
189  float framerate;
190  int width, height;
191 
192  key = bytestream2_get_le32(gb);
193  length = bytestream2_get_le32(gb);
194 
195  switch (key) {
196  case 1:
197  if (length != 4)
198  return AVERROR_INVALIDDATA;
199 
200  if (bytestream2_get_le32(gb) != MKTAG('D', 'V', 'C', 'C'))
201  return AVERROR_INVALIDDATA;
202  break;
203  case 100:
204  if (length < 16)
205  return AVERROR_INVALIDDATA;
206  width = bytestream2_get_le32(gb);
207  height = bytestream2_get_le32(gb);
208  s->color_model = bytestream2_get_le32(gb);
209  if (bytestream2_get_le32(gb) != 1)
210  return AVERROR_INVALIDDATA;
211  ret = ff_set_dimensions(avctx, width, height);
212  if (ret < 0)
213  return ret;
214  length -= 16;
215  goto skip;
216  case 101:
217  if (length != 4)
218  return AVERROR_INVALIDDATA;
219 
220  if (bytestream2_get_le32(gb) != 0)
221  return AVERROR_INVALIDDATA;
222  break;
223  case 102:
224  bytestream2_get_buffer(gb, codec_name, FFMIN(length, sizeof(codec_name) - 1));
225  length -= FFMIN(length, sizeof(codec_name) - 1);
226  if (strncmp(codec_name, "cintel_craw", FFMIN(length, sizeof(codec_name) - 1)))
227  return AVERROR_INVALIDDATA;
228  compressed = 1;
229  goto skip;
230  case 103:
231  if (bytestream2_get_bytes_left(gb) < length)
232  return AVERROR_INVALIDDATA;
233  s->data = gb->buffer;
234  s->data_size = length;
235  goto skip;
236  case 105:
237  if (length <= 0)
238  return AVERROR_INVALIDDATA;
239  hflip = bytestream2_get_byte(gb) != 0;
240  length--;
241  goto skip;
242  case 106:
243  if (length <= 0)
244  return AVERROR_INVALIDDATA;
245  vflip = bytestream2_get_byte(gb) != 0;
246  length--;
247  goto skip;
248  case 107:
249  if (length != 4)
250  return AVERROR_INVALIDDATA;
251  framerate = av_int2float(bytestream2_get_le32(gb));
252  avctx->framerate.num = framerate * 1000;
253  avctx->framerate.den = 1000;
254  break;
255  case 119:
256  if (length != 32)
257  return AVERROR_INVALIDDATA;
258 
259  for (int i = 0; i < 4; i++)
260  s->tile_size[i] = bytestream2_get_le64(gb);
261  break;
262  default:
263  av_log(avctx, AV_LOG_DEBUG, "skipping unknown key %u of length %u\n", key, length);
264 skip:
265  bytestream2_skip(gb, length);
266  }
267  }
268 
269  switch (s->color_model) {
270  case 76:
271  case 88:
273  break;
274  case 77:
275  case 89:
277  break;
278  case 78:
279  case 90:
281  break;
282  case 45:
283  case 79:
284  case 91:
286  break;
287  }
288 
289  switch (s->color_model) {
290  case 45:
291  bps = 10;
292  break;
293  case 76:
294  case 77:
295  case 78:
296  case 79:
297  bps = 12;
298  break;
299  case 88:
300  case 89:
301  case 90:
302  case 91:
303  bps = 16;
304  break;
305  default:
306  return AVERROR_INVALIDDATA;
307  }
308 
309  if (compressed) {
310  for (int i = 0; i < 4; i++) {
311  if (s->tile_size[i] >= s->data_size)
312  return AVERROR_INVALIDDATA;
313  }
314 
315  if (s->tile_size[0] + s->tile_size[1] + s->tile_size[2] + s->tile_size[3] !=
316  s->data_size)
317  return AVERROR_INVALIDDATA;
318  }
319 
320  if (!s->data || !s->data_size)
321  return AVERROR_INVALIDDATA;
322 
323  if (avctx->skip_frame >= AVDISCARD_ALL)
324  return avpkt->size;
325 
326  if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
327  return ret;
328 
329  avctx->bits_per_raw_sample = bps;
330 
331  if (!compressed && s->color_model == 45) {
332  uint16_t *dst = (uint16_t *)p->data[0];
333  GetByteContext gb;
334 
335  bytestream2_init(&gb, s->data, s->data_size);
336  unpack_10bit(&gb, dst, 4, avctx->width, avctx->height, p->linesize[0] / 2);
337  } else if (!compressed) {
338  GetBitContext gbit;
339  const int shift = 16 - bps;
340 
341  ret = init_get_bits8(&gbit, s->data, s->data_size);
342  if (ret < 0)
343  return ret;
344 
345  for (int y = 0; y < avctx->height; y++) {
346  uint16_t *dst = (uint16_t *)(p->data[0] + y * p->linesize[0]);
347 
348  if (get_bits_left(&gbit) < avctx->width * bps)
349  break;
350 
351  for (int x = 0; x < avctx->width; x++)
352  dst[x] = get_bits(&gbit, bps) << shift;
353  }
354  } else {
355  unsigned offset = 0;
356 
357  for (int tile = 0; tile < 4; tile++) {
358  av_packet_unref(s->jpkt);
359  s->jpkt->data = (uint8_t *)s->data + offset;
360  s->jpkt->size = s->tile_size[tile];
361 
362  ret = avcodec_send_packet(s->jpeg_avctx, s->jpkt);
363  if (ret < 0) {
364  av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
365  return ret;
366  }
367 
368  ret = avcodec_receive_frame(s->jpeg_avctx, s->jpgframe);
369  if (ret < 0 || s->jpgframe->format != AV_PIX_FMT_GRAY16 ||
370  s->jpeg_avctx->width * 2 != avctx->width ||
371  s->jpeg_avctx->height * 2 != avctx->height) {
372  if (ret < 0) {
373  av_log(avctx, AV_LOG_ERROR,
374  "JPEG decoding error (%d).\n", ret);
375  } else {
376  av_log(avctx, AV_LOG_ERROR,
377  "JPEG invalid format.\n");
379  }
380 
381  /* Normally skip, if error explode */
382  if (avctx->err_recognition & AV_EF_EXPLODE)
383  return ret;
384  else
385  return 0;
386  }
387 
388  for (int y = 0; y < s->jpeg_avctx->height; y++) {
389  const int hw = s->jpgframe->width / 2;
390  uint16_t *dst = (uint16_t *)(p->data[0] + (y * 2) * p->linesize[0] + tile * hw * 2);
391  const uint16_t *src = (const uint16_t *)(s->jpgframe->data[0] + y * s->jpgframe->linesize[0]);
392 
393  memcpy(dst, src, hw * 2);
394  src += hw;
395  dst += p->linesize[0] / 2;
396  memcpy(dst, src, hw * 2);
397  }
398 
399  av_frame_unref(s->jpgframe);
400  offset += s->tile_size[tile];
401  }
402  }
403 
404  if (hflip || vflip) {
406  sizeof(int32_t) * 9, &rotation);
407  if (rotation) {
408  av_display_rotation_set((int32_t *)rotation->data, 0.f);
409  av_display_matrix_flip((int32_t *)rotation->data, hflip, vflip);
410  }
411  }
412 
413  *got_frame = 1;
414 
415  return 0;
416 }
417 
419 {
420  CRIContext *s = avctx->priv_data;
421 
422  av_frame_free(&s->jpgframe);
423  av_packet_free(&s->jpkt);
424  avcodec_free_context(&s->jpeg_avctx);
425 
426  return 0;
427 }
428 
430  .p.name = "cri",
431  .p.type = AVMEDIA_TYPE_VIDEO,
432  .p.id = AV_CODEC_ID_CRI,
433  .priv_data_size = sizeof(CRIContext),
436  .close = cri_decode_close,
437  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
438  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
440  CODEC_LONG_NAME("Cintel RAW"),
441 };
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: packet.c:429
AVCodec
AVCodec.
Definition: codec.h:187
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: defs.h:51
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:43
CRIContext::data
const uint8_t * data
Definition: cri.c:46
get_bits_left
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:695
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
GetByteContext
Definition: bytestream.h:33
CRIContext
Definition: cri.c:39
unpack_10bit
static void unpack_10bit(GetByteContext *gb, uint16_t *dst, int shift, int w, int h, ptrdiff_t stride)
Definition: cri.c:81
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1430
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:162
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
w
uint8_t w
Definition: llviddspenc.c:38
av_display_matrix_flip
void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip)
Flip the input matrix horizontally and/or vertically.
Definition: display.c:66
AVPacket::data
uint8_t * data
Definition: packet.h:539
FFCodec
Definition: codec_internal.h:127
av_display_rotation_set
void av_display_rotation_set(int32_t matrix[9], double angle)
Initialize a transformation matrix describing a pure clockwise rotation by the specified angle (in de...
Definition: display.c:51
AV_FRAME_DATA_DISPLAYMATRIX
@ AV_FRAME_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:85
CRIContext::jpkt
AVPacket * jpkt
Definition: cri.c:41
intfloat.h
ff_set_dimensions
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:94
AV_PIX_FMT_BAYER_GRBG16
#define AV_PIX_FMT_BAYER_GRBG16
Definition: pixfmt.h:530
thread.h
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: packet.c:74
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:410
AVCodecContext::framerate
AVRational framerate
Definition: avcodec.h:566
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:168
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:335
ff_cri_decoder
const FFCodec ff_cri_decoder
Definition: cri.c:429
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
AVCodecContext::skip_frame
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:1830
av_int2float
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
Definition: intfloat.h:40
GetBitContext
Definition: get_bits.h:108
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:508
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:486
a2
static double a2(void *priv, double x, double y)
Definition: vf_xfade.c:2030
AVRational::num
int num
Numerator.
Definition: rational.h:59
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:209
av_cold
#define av_cold
Definition: attributes.h:90
init_get_bits8
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:545
avcodec_alloc_context3
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:149
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:311
s
#define s(width, name)
Definition: cbs_vp9.c:198
ff_thread_get_buffer
int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
Definition: pthread_frame.c:1049
GetByteContext::buffer
const uint8_t * buffer
Definition: bytestream.h:34
CRIContext::tile_size
uint64_t tile_size[4]
Definition: cri.c:48
avcodec_receive_frame
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder or encoder (when the AV_CODEC_FLAG_RECON_FRAME flag is used...
Definition: avcodec.c:713
cri_decode_init
static av_cold int cri_decode_init(AVCodecContext *avctx)
Definition: cri.c:51
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:1585
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:230
decode.h
get_bits.h
key
const char * key
Definition: hwcontext_opencl.c:189
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:296
AV_PIX_FMT_BAYER_BGGR16
#define AV_PIX_FMT_BAYER_BGGR16
Definition: pixfmt.h:527
CRIContext::jpeg_avctx
AVCodecContext * jpeg_avctx
Definition: cri.c:40
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:110
AVDISCARD_ALL
@ AVDISCARD_ALL
discard all
Definition: defs.h:221
framerate
float framerate
Definition: av1_levels.c:29
NULL
#define NULL
Definition: coverity.c:32
a3
static double a3(void *priv, double x, double y)
Definition: vf_xfade.c:2031
avcodec_free_context
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer.
Definition: options.c:164
CRIContext::jpgframe
AVFrame * jpgframe
Definition: cri.c:42
AV_PIX_FMT_BAYER_GBRG16
#define AV_PIX_FMT_BAYER_GBRG16
Definition: pixfmt.h:529
bytestream2_get_buffer
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
Definition: bytestream.h:267
avcodec_open2
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
Definition: avcodec.c:143
bytestream2_get_bytes_left
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:158
avcodec_find_decoder
const AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: allcodecs.c:1011
AVCodecContext::flags2
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:515
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:368
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVPacket::size
int size
Definition: packet.h:540
height
#define height
Definition: dsp.h:85
codec_internal.h
shift
static int shift(int a, int b)
Definition: bonk.c:261
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:83
bps
unsigned bps
Definition: movenc.c:1877
ff_frame_new_side_data
int ff_frame_new_side_data(const AVCodecContext *avctx, AVFrame *frame, enum AVFrameSideDataType type, size_t size, AVFrameSideData **psd)
Wrapper around av_frame_new_side_data, which rejects side data overridden by the demuxer.
Definition: decode.c:2099
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
#define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame sett...
Definition: codec_internal.h:55
AVFrameSideData::data
uint8_t * data
Definition: frame.h:267
a0
static double a0(void *priv, double x, double y)
Definition: vf_xfade.c:2028
offset
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 offset
Definition: writing_filters.txt:86
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: packet.c:63
AV_CODEC_ID_MJPEG
@ AV_CODEC_ID_MJPEG
Definition: codec_id.h:59
avcodec_send_packet
int avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:728
AV_CODEC_ID_CRI
@ AV_CODEC_ID_CRI
Definition: codec_id.h:312
CRIContext::data_size
unsigned data_size
Definition: cri.c:47
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
display.h
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:610
AVCodecContext::idct_algo
int idct_algo
IDCT algorithm, see FF_IDCT_* below.
Definition: avcodec.h:1558
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:194
AVCodecContext::height
int height
Definition: avcodec.h:624
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:663
cri_decode_frame
static int cri_decode_frame(AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
Definition: cri.c:172
avcodec.h
stride
#define stride
Definition: h264pred_template.c:537
ret
ret
Definition: filter_design.txt:187
pos
unsigned int pos
Definition: spdifenc.c:414
AVCodecContext
main external API structure.
Definition: avcodec.h:451
AVRational::den
int den
Denominator.
Definition: rational.h:60
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
CRIContext::color_model
int color_model
Definition: cri.c:45
AVFrameSideData
Structure to hold side data for an AVFrame.
Definition: frame.h:265
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:478
AVPacket
This structure stores compressed data.
Definition: packet.h:516
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:624
int32_t
int32_t
Definition: audioconvert.c:56
bytestream.h
bytestream2_init
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:137
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:52
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:434
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
a1
static double a1(void *priv, double x, double y)
Definition: vf_xfade.c:2029
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
h
h
Definition: vp9dsp_template.c:2070
width
#define width
Definition: dsp.h:85
AV_PIX_FMT_BAYER_RGGB16
#define AV_PIX_FMT_BAYER_RGGB16
Definition: pixfmt.h:528
CRIContext::gb
GetByteContext gb
Definition: cri.c:44
cri_decode_close
static av_cold int cri_decode_close(AVCodecContext *avctx)
Definition: cri.c:418
skip
static void BS_FUNC() skip(BSCTX *bc, unsigned int n)
Skip n bits in the buffer.
Definition: bitstream_template.h:375
src
#define src
Definition: vp8dsp.c:248