tiff.c File Reference

TIFF image decoder. More...

#include "avcodec.h"
#include "bytestream.h"
#include "config.h"
#include "lzw.h"
#include "tiff.h"
#include "tiff_data.h"
#include "faxcompr.h"
#include "internal.h"
#include "mathops.h"
#include "libavutil/attributes.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "libavutil/avstring.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)

Functions
static unsigned	tget_short (GetByteContext *gb, int le)
static unsigned	tget_long (GetByteContext *gb, int le)
static double	tget_double (GetByteContext *gb, int le)
static unsigned	tget (GetByteContext *gb, int type, int le)
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 char *	shorts2str (int16_t *sp, int count, const char *sep)
static int	add_doubles_metadata (int count, const char *name, const char *sep, TiffContext *s)
static int	add_shorts_metadata (int count, const char *name, const char *sep, TiffContext *s)
static int	add_string_metadata (int count, const char *name, TiffContext *s)
static int	add_metadata (int count, int type, const char *name, const char *sep, TiffContext *s)
static void av_always_inline	horizontal_fill (unsigned int bpp, uint8_t *dst, int usePtr, const uint8_t *src, uint8_t c, int width, int offset)
static int	tiff_unpack_strip (TiffContext *s, uint8_t *dst, int stride, const uint8_t *src, int size, int lines)
static int	init_image (TiffContext *s)
static int	tiff_decode_tag (TiffContext *s)
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
AVCodec	ff_tiff_decoder

Detailed Description

TIFF image decoder.

Author

Konstantin Shishkov

Definition in file tiff.c.

Macro Definition Documentation

#define RET_GEOKEY	(		TYPE,
			array,
			element
	)

Value:

if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
        key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
        return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;

Definition at line 110 of file tiff.c.

Referenced by get_geokey_name(), and get_geokey_type().

#define RET_GEOKEY_VAL	(		TYPE,
			array
	)

Value:

if (val >= TIFF_##TYPE##_OFFSET &&\
        val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
        return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);

Referenced by get_geokey_val().

#define ADD_METADATA	(		count,
			name,
			sep
	)

Value:

if ((ret = add_metadata(count, type, name, sep, s)) < 0) {\
        av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
        return ret;\
    }

Referenced by tiff_decode_tag().

Function Documentation

static unsigned tget_short ( GetByteContext *  gb, int  le  )

static

Definition at line 72 of file tiff.c.

Referenced by add_shorts_metadata(), decode_frame(), tget(), and tiff_decode_tag().

static unsigned tget_long ( GetByteContext *  gb, int  le  )

static

Definition at line 78 of file tiff.c.

Referenced by decode_frame(), tget(), and tiff_decode_tag().

static double tget_double ( GetByteContext *  gb, int  le  )

static

Definition at line 84 of file tiff.c.

Referenced by add_doubles_metadata(), and tiff_decode_tag().

static unsigned tget ( GetByteContext *  gb, int  type, int  le  )

static

Definition at line 90 of file tiff.c.

Referenced by decode_frame(), and tiff_decode_tag().

static void free_geotags ( TiffContext *const  s )

static

Definition at line 100 of file tiff.c.

Referenced by decode_frame(), and tiff_end().

static const char* get_geokey_name ( int  key )

static

Definition at line 115 of file tiff.c.

Referenced by decode_frame().

static int get_geokey_type ( int  key )

static

Definition at line 125 of file tiff.c.

Referenced by decode_frame().

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

static

Definition at line 135 of file tiff.c.

Referenced by search_keyval().

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

static

Definition at line 140 of file tiff.c.

Referenced by get_geokey_val().

static char* get_geokey_val ( int  key, int  val  )

static

Definition at line 145 of file tiff.c.

Referenced by tiff_decode_tag().

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

static

Definition at line 211 of file tiff.c.

Referenced by add_doubles_metadata(), and tiff_decode_tag().

static char* shorts2str ( int16_t *  sp, int  count, const char *  sep  )

static

Definition at line 237 of file tiff.c.

Referenced by add_shorts_metadata().

static int add_doubles_metadata ( int  count, const char *  name, const char *  sep, TiffContext *  s  )

static

Definition at line 263 of file tiff.c.

Referenced by add_metadata().

static int add_shorts_metadata ( int  count, const char *  name, const char *  sep, TiffContext *  s  )

static

Definition at line 290 of file tiff.c.

Referenced by add_metadata().

static int add_string_metadata ( int  count, const char *  name, TiffContext *  s  )

static

Definition at line 316 of file tiff.c.

Referenced by add_metadata().

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

static

Definition at line 335 of file tiff.c.

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

static

Definition at line 369 of file tiff.c.

Referenced by tiff_unpack_strip().

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

static

Definition at line 409 of file tiff.c.

Referenced by decode_frame().

static int init_image ( TiffContext *  s )

static

Definition at line 594 of file tiff.c.

Referenced by decode_frame().

static int tiff_decode_tag ( TiffContext *  s )

static

Definition at line 658 of file tiff.c.

Referenced by decode_frame().

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

static

Definition at line 1026 of file tiff.c.

static av_cold int tiff_init ( AVCodecContext *  avctx )

static

Definition at line 1199 of file tiff.c.

static av_cold int tiff_end ( AVCodecContext *  avctx )

static

Definition at line 1214 of file tiff.c.

Variable Documentation

AVCodec ff_tiff_decoder

Initial value:

= {
    .name           = "tiff",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_TIFF,
    .priv_data_size = sizeof(TiffContext),
    .init           = tiff_init,
    .close          = tiff_end,
    .decode         = decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name      = NULL_IF_CONFIG_SMALL("TIFF image"),
}

Definition at line 1227 of file tiff.c.