tiff.c File Reference

TIFF image decoder. More...

#include "config.h"
#include <float.h>
#include "libavutil/attributes.h"
#include "libavutil/attributes_internal.h"
#include "libavutil/avstring.h"
#include "libavutil/error.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/reverse.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "exif_internal.h"
#include "faxcompr.h"
#include "lzw.h"
#include "tiff.h"
#include "tiff_common.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_STR(TYPE, array)
#define	RET_GEOKEY_TYPE(TYPE, array)
#define	RET_GEOKEY_VAL(TYPE, array)
#define	ADD_METADATA(count, name, sep)
#define	OFFSET(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 const char *	get_geokey_val (int key, uint16_t 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)
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 numerator, unsigned denumerator)
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_STR

#define RET_GEOKEY_STR	(		TYPE,
			array )

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_string + tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].offset;

Referenced by get_geokey_name().

RET_GEOKEY_TYPE

#define RET_GEOKEY_TYPE	(		TYPE,
			array )

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].type;

Referenced by get_geokey_type().

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 tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET];

Referenced by get_geokey_val().

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;\
    }

Referenced by tiff_decode_tag().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(TiffContext, x)

Definition at line 2494 of file tiff.c.

Function Documentation

tiff_set_type()

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

static

Definition at line 134 of file tiff.c.

Referenced by tiff_decode_tag().

free_geotags()

static void free_geotags ( TiffContext *const s )

static

Definition at line 139 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 147 of file tiff.c.

Referenced by decode_frame().

get_geokey_type()

static int get_geokey_type ( int key )

static

Definition at line 162 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 176 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 181 of file tiff.c.

Referenced by get_geokey_val().

get_geokey_val()

static const char * get_geokey_val ( int key, uint16_t val )

static

Definition at line 190 of file tiff.c.

Referenced by tiff_decode_tag().

doubles2str()

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

static

Definition at line 249 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 275 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 289 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 308 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 316 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 389 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 472 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 646 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 667 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 757 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 986 of file tiff.c.

Referenced by decode_frame().

init_image()

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

static

Definition at line 1059 of file tiff.c.

Referenced by decode_frame().

set_sar()

static void set_sar ( TiffContext * s, unsigned tag, unsigned numerator, unsigned denumerator )

static

Definition at line 1249 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 1268 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 1918 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 1944 of file tiff.c.

tiff_init()

static av_cold int tiff_init ( AVCodecContext * avctx )

static

Definition at line 2438 of file tiff.c.

tiff_end()

static av_cold int tiff_end ( AVCodecContext * avctx )

static

Definition at line 2476 of file tiff.c.

Variable Documentation

d65_white

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

static

Definition at line 132 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 1912 of file tiff.c.

Referenced by camera_xyz_coeff(), create_filtergraph(), ff_sws_get_adaptation(), 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 2495 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 2502 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 2509 of file tiff.c.