FFmpeg
Data Structures | Macros | Functions | Variables
tiff.c File Reference
#include "config.h"
#include <float.h>
#include "libavutil/attributes.h"
#include "libavutil/error.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/reverse.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "faxcompr.h"
#include "lzw.h"
#include "tiff.h"
#include "tiff_data.h"
#include "mjpegdec.h"
#include "thread.h"
#include "get_bits.h"

Go to the source code of this file.

Data Structures

struct  TiffContext
 

Macros

#define RET_GEOKEY(TYPE, array, element)
 
#define RET_GEOKEY_VAL(TYPE, array)
 
#define ADD_METADATA(count, name, sep)
 
#define OFFSET(x)   offsetof(TiffContext, x)
 

Functions

static void tiff_set_type (TiffContext *s, enum TiffType tiff_type)
 
static void free_geotags (TiffContext *const s)
 
static const char * get_geokey_name (int key)
 
static int get_geokey_type (int key)
 
static int cmp_id_key (const void *id, const void *k)
 
static const char * search_keyval (const TiffGeoTagKeyName *keys, int n, int id)
 
static char * get_geokey_val (int key, int val)
 
static char * doubles2str (double *dp, int count, const char *sep)
 
static int add_metadata (int count, int type, const char *name, const char *sep, TiffContext *s, AVFrame *frame)
 
static uint16_t av_always_inline dng_process_color16 (uint16_t value, const uint16_t *lut, float black_level, float scale_factor)
 Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5) More...
 
static uint16_t av_always_inline dng_process_color8 (uint16_t value, const uint16_t *lut, float black_level, float scale_factor)
 
static void av_always_inline dng_blit (TiffContext *s, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int width, int height, int is_single_comp, int is_u16, int odd_line)
 
static void av_always_inline horizontal_fill (TiffContext *s, unsigned int bpp, uint8_t *dst, int usePtr, const uint8_t *src, uint8_t c, int width, int offset)
 
static int deinvert_buffer (TiffContext *s, const uint8_t *src, int size)
 
static void unpack_gray (TiffContext *s, AVFrame *p, const uint8_t *src, int lnum, int width, int bpp)
 
static void unpack_yuv (TiffContext *s, AVFrame *p, const uint8_t *src, int lnum)
 
static int tiff_unpack_fax (TiffContext *s, uint8_t *dst, int stride, const uint8_t *src, int size, int width, int lines)
 
static int dng_decode_jpeg (AVCodecContext *avctx, AVFrame *frame, int tile_byte_count, int dst_x, int dst_y, int w, int h)
 
static int tiff_unpack_strip (TiffContext *s, AVFrame *p, uint8_t *dst, int stride, const uint8_t *src, int size, int strip_start, int lines)
 
static int dng_decode_tiles (AVCodecContext *avctx, AVFrame *frame, const AVPacket *avpkt)
 
static int init_image (TiffContext *s, AVFrame *frame)
 
static void set_sar (TiffContext *s, unsigned tag, unsigned num, unsigned den)
 
static int tiff_decode_tag (TiffContext *s, AVFrame *frame)
 
static void camera_xyz_coeff (TiffContext *s, float rgb2cam[3][4], double cam2xyz[4][3])
 
static int decode_frame (AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
 
static av_cold int tiff_init (AVCodecContext *avctx)
 
static av_cold int tiff_end (AVCodecContext *avctx)
 

Variables

static const float d65_white [3] = { 0.950456f, 1.f, 1.088754f }
 
static const float xyz2rgb [3][3]
 
static const AVOption tiff_options []
 
static const AVClass tiff_decoder_class
 
const FFCodec ff_tiff_decoder
 

Detailed Description

TIFF image decoder

Author
Konstantin Shishkov

Definition in file tiff.c.

Macro Definition Documentation

◆ RET_GEOKEY

#define RET_GEOKEY (   TYPE,
  array,
  element 
)
Value:
if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_name_type_map))\
return tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;

Definition at line 143 of file tiff.c.

◆ RET_GEOKEY_VAL

#define RET_GEOKEY_VAL (   TYPE,
  array 
)
Value:
if (val >= TIFF_##TYPE##_OFFSET &&\
val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_codes))\
return av_strdup(tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);

◆ ADD_METADATA

#define ADD_METADATA (   count,
  name,
  sep 
)
Value:
if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
goto end;\
}

◆ OFFSET

#define OFFSET (   x)    offsetof(TiffContext, x)

Definition at line 2446 of file tiff.c.

Function Documentation

◆ tiff_set_type()

static void tiff_set_type ( TiffContext *  s,
enum TiffType  tiff_type 
)
static

Definition at line 127 of file tiff.c.

Referenced by tiff_decode_tag().

◆ free_geotags()

static void free_geotags ( TiffContext *const  s)
static

Definition at line 132 of file tiff.c.

Referenced by decode_frame(), and tiff_end().

◆ get_geokey_name()

static const char* get_geokey_name ( int  key)
static

Definition at line 148 of file tiff.c.

Referenced by decode_frame().

◆ get_geokey_type()

static int get_geokey_type ( int  key)
static

Definition at line 158 of file tiff.c.

Referenced by decode_frame().

◆ cmp_id_key()

static int cmp_id_key ( const void *  id,
const void *  k 
)
static

Definition at line 168 of file tiff.c.

Referenced by search_keyval().

◆ search_keyval()

static const char* search_keyval ( const TiffGeoTagKeyName *  keys,
int  n,
int  id 
)
static

Definition at line 173 of file tiff.c.

Referenced by get_geokey_val().

◆ get_geokey_val()

static char* get_geokey_val ( int  key,
int  val 
)
static

Definition at line 182 of file tiff.c.

Referenced by tiff_decode_tag().

◆ doubles2str()

static char* doubles2str ( double *  dp,
int  count,
const char *  sep 
)
static

Definition at line 250 of file tiff.c.

Referenced by tiff_decode_tag().

◆ add_metadata()

static int add_metadata ( int  count,
int  type,
const char *  name,
const char *  sep,
TiffContext *  s,
AVFrame *  frame 
)
static

Definition at line 276 of file tiff.c.

◆ dng_process_color16()

static uint16_t av_always_inline dng_process_color16 ( uint16_t  value,
const uint16_t *  lut,
float  black_level,
float  scale_factor 
)
static

Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)

Definition at line 290 of file tiff.c.

Referenced by dng_blit(), and dng_process_color8().

◆ dng_process_color8()

static uint16_t av_always_inline dng_process_color8 ( uint16_t  value,
const uint16_t *  lut,
float  black_level,
float  scale_factor 
)
static

Definition at line 309 of file tiff.c.

Referenced by dng_blit().

◆ dng_blit()

static void av_always_inline dng_blit ( TiffContext *  s,
uint8_t *  dst,
int  dst_stride,
const uint8_t *  src,
int  src_stride,
int  width,
int  height,
int  is_single_comp,
int  is_u16,
int  odd_line 
)
static

Definition at line 317 of file tiff.c.

Referenced by dng_decode_jpeg(), and tiff_unpack_strip().

◆ horizontal_fill()

static void av_always_inline horizontal_fill ( TiffContext *  s,
unsigned int  bpp,
uint8_t *  dst,
int  usePtr,
const uint8_t *  src,
uint8_t  c,
int  width,
int  offset 
)
static

Definition at line 390 of file tiff.c.

Referenced by tiff_unpack_fax(), and tiff_unpack_strip().

◆ deinvert_buffer()

static int deinvert_buffer ( TiffContext *  s,
const uint8_t *  src,
int  size 
)
static

Definition at line 445 of file tiff.c.

Referenced by tiff_unpack_fax(), and tiff_unpack_strip().

◆ unpack_gray()

static void unpack_gray ( TiffContext *  s,
AVFrame *  p,
const uint8_t *  src,
int  lnum,
int  width,
int  bpp 
)
static

Definition at line 458 of file tiff.c.

Referenced by tiff_unpack_strip().

◆ unpack_yuv()

static void unpack_yuv ( TiffContext *  s,
AVFrame *  p,
const uint8_t *  src,
int  lnum 
)
static

Definition at line 471 of file tiff.c.

Referenced by tiff_unpack_strip().

◆ tiff_unpack_fax()

static int tiff_unpack_fax ( TiffContext *  s,
uint8_t *  dst,
int  stride,
const uint8_t *  src,
int  size,
int  width,
int  lines 
)
static

Definition at line 631 of file tiff.c.

Referenced by tiff_unpack_strip().

◆ dng_decode_jpeg()

static int dng_decode_jpeg ( AVCodecContext *  avctx,
AVFrame *  frame,
int  tile_byte_count,
int  dst_x,
int  dst_y,
int  w,
int  h 
)
static

Definition at line 652 of file tiff.c.

Referenced by dng_decode_tiles(), and tiff_unpack_strip().

◆ tiff_unpack_strip()

static int tiff_unpack_strip ( TiffContext *  s,
AVFrame *  p,
uint8_t *  dst,
int  stride,
const uint8_t *  src,
int  size,
int  strip_start,
int  lines 
)
static

Definition at line 742 of file tiff.c.

Referenced by decode_frame().

◆ dng_decode_tiles()

static int dng_decode_tiles ( AVCodecContext *  avctx,
AVFrame *  frame,
const AVPacket *  avpkt 
)
static

Definition at line 971 of file tiff.c.

Referenced by decode_frame().

◆ init_image()

static int init_image ( TiffContext *  s,
AVFrame *  frame 
)
static

Definition at line 1044 of file tiff.c.

Referenced by decode_frame().

◆ set_sar()

static void set_sar ( TiffContext *  s,
unsigned  tag,
unsigned  num,
unsigned  den 
)
static

Definition at line 1233 of file tiff.c.

Referenced by tiff_decode_tag().

◆ tiff_decode_tag()

static int tiff_decode_tag ( TiffContext *  s,
AVFrame *  frame 
)
static

Only get the first SubIFD

Definition at line 1252 of file tiff.c.

Referenced by decode_frame().

◆ camera_xyz_coeff()

static void camera_xyz_coeff ( TiffContext *  s,
float  rgb2cam[3][4],
double  cam2xyz[4][3] 
)
static

Definition at line 1879 of file tiff.c.

Referenced by decode_frame().

◆ decode_frame()

static int decode_frame ( AVCodecContext *  avctx,
AVFrame *  p,
int *  got_frame,
AVPacket *  avpkt 
)
static

whether we should process this IFD's SubIFD

whether we should process this multi-page IFD's next page

Definition at line 1905 of file tiff.c.

◆ tiff_init()

static av_cold int tiff_init ( AVCodecContext *  avctx)
static

Definition at line 2387 of file tiff.c.

◆ tiff_end()

static av_cold int tiff_end ( AVCodecContext *  avctx)
static

Definition at line 2429 of file tiff.c.

Variable Documentation

◆ d65_white

const float d65_white[3] = { 0.950456f, 1.f, 1.088754f }
static

Definition at line 125 of file tiff.c.

Referenced by tiff_decode_tag().

◆ xyz2rgb

const float xyz2rgb[3][3]
static
Initial value:
= {
{ 0.412453f, 0.357580f, 0.180423f },
{ 0.212671f, 0.715160f, 0.072169f },
{ 0.019334f, 0.119193f, 0.950227f },
}

Definition at line 1873 of file tiff.c.

Referenced by camera_xyz_coeff(), create_filtergraph(), and get_rgb2rgb_matrix().

◆ tiff_options

const AVOption tiff_options[]
static
Initial value:
= {
{ "subimage", "decode subimage instead if available", OFFSET(get_subimage), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM },
{ "thumbnail", "decode embedded thumbnail subimage instead if available", OFFSET(get_thumbnail), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM },
{ "page", "page number of multi-page image to decode (starting from 1)", OFFSET(get_page), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM },
{ NULL },
}

Definition at line 2447 of file tiff.c.

◆ tiff_decoder_class

const AVClass tiff_decoder_class
static
Initial value:
= {
.class_name = "TIFF decoder",
.item_name = av_default_item_name,
.option = tiff_options,
.version = LIBAVUTIL_VERSION_INT,
}

Definition at line 2454 of file tiff.c.

◆ ff_tiff_decoder

const FFCodec ff_tiff_decoder
Initial value:
= {
.p.name = "tiff",
CODEC_LONG_NAME("TIFF image"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_TIFF,
.priv_data_size = sizeof(TiffContext),
.init = tiff_init,
.close = tiff_end,
FF_CODEC_DECODE_CB(decode_frame),
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_ICC_PROFILES |
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
.p.priv_class = &tiff_decoder_class,
}

Definition at line 2461 of file tiff.c.

name
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 minimum maximum flags name is the option name
Definition: writing_filters.txt:88
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:42
AV_OPT_FLAG_VIDEO_PARAM
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:284
OFFSET
#define OFFSET(x)
Definition: tiff.c:2446
tiff_end
static av_cold int tiff_end(AVCodecContext *avctx)
Definition: tiff.c:2429
tiff_options
static const AVOption tiff_options[]
Definition: tiff.c:2447
val
static double val(void *priv, double ch)
Definition: aeval.c:77
type
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 type
Definition: writing_filters.txt:86
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:306
s
#define s(width, name)
Definition: cbs_vp9.c:256
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:365
key
const char * key
Definition: hwcontext_opencl.c:174
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:107
TYPE
#define TYPE
Definition: ffv1dec.c:116
tiff_init
static av_cold int tiff_init(AVCodecContext *avctx)
Definition: tiff.c:2387
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
TiffContext
Definition: tiff.c:55
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
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
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:54
tiff_decoder_class
static const AVClass tiff_decoder_class
Definition: tiff.c:2454
decode_frame
static int decode_frame(AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
Definition: tiff.c:1905
AV_OPT_FLAG_DECODING_PARAM
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:282
FF_CODEC_CAP_ICC_PROFILES
#define FF_CODEC_CAP_ICC_PROFILES
Codec supports embedded ICC profiles (AV_FRAME_DATA_ICC_PROFILE).
Definition: codec_internal.h:82
array
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:111
ret
ret
Definition: filter_design.txt:187
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:270
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:244
add_metadata
static int add_metadata(int count, int type, const char *name, const char *sep, TiffContext *s, AVFrame *frame)
Definition: tiff.c:276
AV_CODEC_ID_TIFF
@ AV_CODEC_ID_TIFF
Definition: codec_id.h:148
Generated on Tue Feb 28 2023 21:34:27 for FFmpeg by   doxygen 1.8.17