#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/avstring.h"
#include "libavutil/error.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.h"
#include "faxcompr.h"
#include "internal.h"
#include "lzw.h"
#include "mathops.h"
#include "tiff.h"
#include "tiff_data.h"
#include "mjpegdec.h"
#include "thread.h"
#include "get_bits.h"

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, uint16_t 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, uint16_t 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)

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, ThreadFrame frame)

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

static int	tiff_decode_tag (TiffContext s, AVFrame frame)

static int	decode_frame (AVCodecContext avctx, void data, int got_frame, AVPacket avpkt)

static av_cold int	tiff_init (AVCodecContext *avctx)

static av_cold int	tiff_end (AVCodecContext *avctx)

Variables
static const AVOption	tiff_options []

static const AVClass	tiff_decoder_class

const AVCodec	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 132 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 2165 of file tiff.c.

Function Documentation

◆ tiff_set_type()

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

static

Definition at line 116 of file tiff.c.

Referenced by tiff_decode_tag().

◆ free_geotags()

static void free_geotags ( TiffContext *const s )

static

Definition at line 121 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 137 of file tiff.c.

Referenced by decode_frame().

◆ get_geokey_type()

static int get_geokey_type ( int key )

static

Definition at line 147 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 157 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 162 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 171 of file tiff.c.

Referenced by tiff_decode_tag().

◆ doubles2str()

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

static

Definition at line 239 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 265 of file tiff.c.

◆ dng_process_color16()

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

static

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

Definition at line 279 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,
		uint16_t	black_level,
		float	scale_factor
	)

static

Definition at line 301 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
	)

static

Definition at line 309 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 372 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 427 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 440 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 453 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 613 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 634 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 724 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 949 of file tiff.c.

Referenced by decode_frame().

◆ init_image()

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

static

Definition at line 1019 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 1192 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 1211 of file tiff.c.

Referenced by decode_frame().

◆ decode_frame()

static int decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		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 1741 of file tiff.c.

◆ tiff_init()

static av_cold int tiff_init ( AVCodecContext * avctx )

static

Definition at line 2106 of file tiff.c.

◆ tiff_end()

static av_cold int tiff_end ( AVCodecContext * avctx )

static

Definition at line 2148 of file tiff.c.

Variable Documentation

◆ 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 2166 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 2173 of file tiff.c.

◆ ff_tiff_decoder

const AVCodec ff_tiff_decoder

Initial value:

= {
    .name           = "tiff",
    .long_name      = NULL_IF_CONFIG_SMALL("TIFF image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_TIFF,
    .priv_data_size = sizeof(TiffContext),
    .init           = tiff_init,
    .close          = tiff_end,
    .decode         = decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
    .priv_class     = &tiff_decoder_class,
}

Definition at line 2180 of file tiff.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ RET_GEOKEY

◆ RET_GEOKEY_VAL

◆ ADD_METADATA

◆ OFFSET

Function Documentation

◆ tiff_set_type()

◆ free_geotags()

◆ get_geokey_name()

◆ get_geokey_type()

◆ cmp_id_key()

◆ search_keyval()

◆ get_geokey_val()

◆ doubles2str()

◆ add_metadata()

◆ dng_process_color16()

◆ dng_process_color8()

◆ dng_blit()

◆ horizontal_fill()

◆ deinvert_buffer()

◆ unpack_gray()

◆ unpack_yuv()

◆ tiff_unpack_fax()

◆ dng_decode_jpeg()

◆ tiff_unpack_strip()

◆ dng_decode_tiles()

◆ init_image()

◆ set_sar()

◆ tiff_decode_tag()

◆ decode_frame()

◆ tiff_init()

◆ tiff_end()

Variable Documentation

◆ tiff_options

◆ tiff_decoder_class

◆ ff_tiff_decoder