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Added some tags to exif parser.

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Original commit message from CVS:
Added some tags to exif parser.
This commit is contained in:
Edgard Lima 2007-12-05 17:00:59 +00:00
parent 3966e730c9
commit 8152bfe972
6 changed files with 251 additions and 21 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2007-12-05 Edgard Lima <edgard.lima@indt.org.br>
* ext/metadata/metadataexif.c:
* ext/metadata/metadataiptc.c:
* ext/metadata/metadatatags.c:
* ext/metadata/metadatatags.h:
* ext/metadata/metadataxmp.c:
Added some tags to exif parser.
2007-12-05 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* gst/mpegtsparse/mpegtspacketizer.c:

138
ext/metadata/metadataexif.c
View file

@ -55,11 +55,12 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping)
{
GST_LOG ("EXIF not defined, here I should send just one tag as whole chunk");
if (mapping & METADATA_TAG_MAP_WHOLECHUNK)
if (mapping & METADATA_TAG_MAP_WHOLECHUNK) {
GST_LOG
("EXIF not defined, here I should send just one tag as whole chunk");
metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_EXIF,
adapter);
}
}
@ -73,11 +74,13 @@ metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
#else /* ifndef HAVE_EXIF */
#include <libexif/exif-data.h>
#include <stdlib.h>
typedef struct _tag_MEUserData
{
GstTagList *taglist;
GstTagMergeMode mode;
ExifShort resolution_unit; /* 2- inches (default), 3- cm */
} MEUserData;
typedef struct _tag_MapIntStr
@ -96,10 +99,22 @@ const gchar *
metadataparse_exif_get_tag_from_exif (ExifTag exif, GType * type)
{
/* FIXEME: sorted with binary search */
static const MapIntStr array[] = {
static MapIntStr array[] = {
{EXIF_TAG_MAKE, GST_TAG_DEVICE_MAKE, G_TYPE_STRING},
{EXIF_TAG_MODEL, GST_TAG_DEVICE_MODEL, G_TYPE_STRING},
{0, NULL, G_TYPE_NONE}
{EXIF_TAG_SOFTWARE, GST_TAG_CREATOR_TOOL, G_TYPE_STRING},
{EXIF_TAG_X_RESOLUTION, GST_TAG_IMAGE_XRESOLUTION, G_TYPE_FLOAT}, /* asure inches */
{EXIF_TAG_Y_RESOLUTION, GST_TAG_IMAGE_YRESOLUTION, G_TYPE_FLOAT}, /* asure inches */
{EXIF_TAG_EXPOSURE_TIME, GST_TAG_CAPTURE_EXPOSURE_TIME, G_TYPE_FLOAT},
{EXIF_TAG_FNUMBER, GST_TAG_CAPTURE_FNUMBER, G_TYPE_FLOAT},
{EXIF_TAG_EXPOSURE_PROGRAM, GST_TAG_CAPTURE_EXPOSURE_PROGRAM, G_TYPE_UINT},
{EXIF_TAG_BRIGHTNESS_VALUE, GST_TAG_CAPTURE_BRIGHTNESS, G_TYPE_FLOAT},
{EXIF_TAG_WHITE_BALANCE, GST_TAG_CAPTURE_WHITE_BALANCE, G_TYPE_UINT},
{EXIF_TAG_DIGITAL_ZOOM_RATIO, GST_TAG_CAPTURE_DIGITAL_ZOOM, G_TYPE_FLOAT},
{EXIF_TAG_GAIN_CONTROL, GST_TAG_CAPTURE_GAIN, G_TYPE_UINT},
{EXIF_TAG_CONTRAST, GST_TAG_CAPTURE_CONTRAST, G_TYPE_UINT},
{EXIF_TAG_SATURATION, GST_TAG_CAPTURE_SATURATION, G_TYPE_UINT},
{0, NULL, G_TYPE_NONE, G_TYPE_UINT}
};
int i = 0;
@ -121,7 +136,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
const guint8 *buf;
guint32 size;
ExifData *exif = NULL;
MEUserData user_data = { taglist, mode };
MEUserData user_data = { taglist, mode, 2 };
if (adapter == NULL || (size = gst_adapter_available (adapter)) == 0) {
goto done;
@ -171,8 +186,111 @@ exif_content_foreach_entry_func (ExifEntry * entry, void *user_data)
char buf[2048];
MEUserData *meudata = (MEUserData *) user_data;
GType type;
ExifByteOrder byte_order;
const gchar *tag = metadataparse_exif_get_tag_from_exif (entry->tag, &type);
/* We need the byte order */
if (!entry || !entry->parent || !entry->parent->parent)
return;
byte_order = exif_data_get_byte_order (entry->parent->parent);
if (entry->tag == EXIF_TAG_RESOLUTION_UNIT) {
meudata->resolution_unit = exif_get_short (entry->data, byte_order);
if (meudata->resolution_unit == 3) {
/* if [xy]resolution has alredy been add in cm, replace it in inches */
gfloat value;
if (gst_tag_list_get_float (meudata->taglist, GST_TAG_IMAGE_XRESOLUTION,
&value))
gst_tag_list_add (meudata->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_IMAGE_XRESOLUTION, value * 0.4f, NULL);
if (gst_tag_list_get_float (meudata->taglist, GST_TAG_IMAGE_YRESOLUTION,
&value))
gst_tag_list_add (meudata->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_IMAGE_YRESOLUTION, value * 0.4f, NULL);
}
goto done;
}
if (tag) {
/* FIXME: create a generic function for this */
/* could also be used with entry->format */
switch (type) {
case G_TYPE_STRING:
gst_tag_list_add (meudata->taglist, meudata->mode, tag,
exif_entry_get_value (entry, buf, sizeof (buf)), NULL);
break;
case G_TYPE_FLOAT:
{
gfloat f_value;
ExifRational v_rat;
switch (entry->format) {
case EXIF_FORMAT_RATIONAL:
v_rat = exif_get_rational (entry->data, byte_order);
if (v_rat.numerator == 0)
f_value = 0.0f;
else
f_value = (float) v_rat.numerator / (float) v_rat.denominator;
if (v_rat.numerator == 0xFFFFFFFF) {
if (entry->tag == GST_TAG_CAPTURE_BRIGHTNESS) {
f_value = 100.0f;
}
}
break;
default:
GST_ERROR ("Unexpected Tag Type");
goto done;
break;
}
if (meudata->resolution_unit == 3) {
/* converts from cm to inches */
if (entry->tag == EXIF_TAG_X_RESOLUTION
|| entry->tag == EXIF_TAG_Y_RESOLUTION) {
f_value *= 0.4f;
}
}
gst_tag_list_add (meudata->taglist, meudata->mode, tag, f_value, NULL);
}
case G_TYPE_UINT:
{
ExifShort v_short;
switch (entry->format) {
case EXIF_FORMAT_SHORT:
v_short = exif_get_short (entry->data, byte_order);
break;
default:
GST_ERROR ("Unexpected Tag Type");
goto done;
break;
}
if (entry->tag == EXIF_TAG_CONTRAST ||
entry->tag == EXIF_TAG_SATURATION) {
switch (v_short) {
case 0:
break;
case 1:
v_short = -67;
break;
case 2:
v_short = 66;
break;
default:
GST_ERROR ("Unexpected value");
break;
}
}
gst_tag_list_add (meudata->taglist, meudata->mode, tag, v_short, NULL);
}
break;
default:
break;
}
}
done:
GST_LOG ("\n Entry %p: %s (%s)\n"
" Size, Comps: %d, %d\n"
" Value: %s\n"
@ -187,13 +305,7 @@ exif_content_foreach_entry_func (ExifEntry * entry, void *user_data)
exif_tag_get_title_in_ifd (entry->tag, EXIF_IFD_0),
exif_tag_get_description_in_ifd (entry->tag, EXIF_IFD_0));
if (tag) {
/* FIXME: create a generic function for this */
/* could also be used with entry->format */
if (type == G_TYPE_STRING)
gst_tag_list_add (meudata->taglist, meudata->mode, tag,
exif_entry_get_value (entry, buf, sizeof (buf)), NULL);
}
return;
}

7
ext/metadata/metadataiptc.c
View file

@ -55,11 +55,12 @@ metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping)
{
GST_LOG ("IPTC not defined, here I should send just one tag as whole chunk");
if (mapping & METADATA_TAG_MAP_WHOLECHUNK)
if (mapping & METADATA_TAG_MAP_WHOLECHUNK) {
GST_LOG
("IPTC not defined, here I should send just one tag as whole chunk");
metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_IPTC,
adapter);
}
}

93
ext/metadata/metadatatags.c
View file

@ -83,6 +83,8 @@ metadata_tags_xmp_register (void)
void
metadata_tags_register (void)
{
/* devices tags */
gst_tag_register (GST_TAG_DEVICE_MAKE, GST_TAG_FLAG_META,
G_TYPE_STRING, GST_TAG_DEVICE_MAKE,
"The manufacturer of the recording equipment", NULL);
@ -90,6 +92,97 @@ metadata_tags_register (void)
GST_TAG_DEVICE_MODEL, "The model name or model number of the equipment",
NULL);
/* generic tags */
gst_tag_register (GST_TAG_CREATOR_TOOL, GST_TAG_FLAG_META, G_TYPE_STRING,
GST_TAG_CREATOR_TOOL,
"The name of the first known tool used to create the resource."
" Or firmware or driver version of device", NULL);
/* image tags */
gst_tag_register (GST_TAG_IMAGE_XRESOLUTION, GST_TAG_FLAG_META, G_TYPE_FLOAT,
GST_TAG_IMAGE_XRESOLUTION, "Horizontal resolution in pixels per inch",
NULL);
gst_tag_register (GST_TAG_IMAGE_YRESOLUTION, GST_TAG_FLAG_META, G_TYPE_FLOAT,
GST_TAG_IMAGE_YRESOLUTION, "Vertical resolution in pixels per inch",
NULL);
/* capture tags */
gst_tag_register (GST_TAG_CAPTURE_EXPOSURE_TIME, GST_TAG_FLAG_META,
G_TYPE_FLOAT, GST_TAG_CAPTURE_EXPOSURE_TIME, "Exposure time in seconds",
NULL);
gst_tag_register (GST_TAG_CAPTURE_FNUMBER, GST_TAG_FLAG_META, G_TYPE_FLOAT,
GST_TAG_CAPTURE_FNUMBER, "F number (focal ratio)", NULL);
/**
0 - not defined
1- Manual
2- Normal program
3- Aperture priority
4- Shutter priority
5- Creative program (biased toward death of field)
6- Action program (biased toward fast shutter speed)
7- Portrait mode (for closeup photos with the background out of focus)
8- Landscape mode (for landscape photos with the background in focus)
*** exif is until here ***
9- Night
10- Back-light
11- Spotlight
12- Snow
13- Beach
*/
gst_tag_register (GST_TAG_CAPTURE_EXPOSURE_PROGRAM, GST_TAG_FLAG_META,
G_TYPE_UINT, GST_TAG_CAPTURE_EXPOSURE_PROGRAM,
"Class of program used for exposure", NULL);
/** The unit is the APEX value.
Ordinarily it is given in the range of -99.99 to 99.99.
100.0 mean unknown
*/
gst_tag_register (GST_TAG_CAPTURE_BRIGHTNESS, GST_TAG_FLAG_META, G_TYPE_FLOAT,
GST_TAG_CAPTURE_BRIGHTNESS, "Brightness (APEX from -99.99 to 99.99)",
NULL);
/**
0- Auto
1- Off
*** exif is until here ***
2- Sunlight
3- Cloudy
4- Shade
5- Tungsten
6- Fluorescent
7- Incandescent
8- Flash
9- Horizon (sun on the horizon)
*/
gst_tag_register (GST_TAG_CAPTURE_WHITE_BALANCE, GST_TAG_FLAG_META,
G_TYPE_UINT, GST_TAG_CAPTURE_WHITE_BALANCE, "White balance mode", NULL);
/** if Zero ZOOM not used
*/
gst_tag_register (GST_TAG_CAPTURE_DIGITAL_ZOOM, GST_TAG_FLAG_META,
G_TYPE_FLOAT, GST_TAG_CAPTURE_DIGITAL_ZOOM, "Digital zoom ratio", NULL);
/**
0- None
1- Low gain up
2- High gain up
3- Low gain down
4- High gain down
*/
gst_tag_register (GST_TAG_CAPTURE_GAIN, GST_TAG_FLAG_META, G_TYPE_UINT,
GST_TAG_CAPTURE_GAIN, "", NULL);
/**
from -100 to 100
*** exif is just 0, 1, 2 (normal, soft and hard)
*/
gst_tag_register (GST_TAG_CAPTURE_CONTRAST, GST_TAG_FLAG_META, G_TYPE_INT,
GST_TAG_CAPTURE_CONTRAST, "", NULL);
/**
from -100 to 100
*** exif is just 0, 1, 2 (normal, low and high)
*/
gst_tag_register (GST_TAG_CAPTURE_SATURATION, GST_TAG_FLAG_META, G_TYPE_INT,
GST_TAG_CAPTURE_SATURATION, "", NULL);
metadata_tags_exif_register ();
metadata_tags_iptc_register ();
metadata_tags_xmp_register ();

19
ext/metadata/metadatatags.h
View file

@ -61,8 +61,23 @@ typedef enum {
#define GST_TAG_XMP "xmp"
#define GST_TAG_DEVICE_MAKE "device-make"
#define GST_TAG_DEVICE_MODEL "device-model"
#define GST_TAG_DEVICE_MAKE "device-make"
#define GST_TAG_DEVICE_MODEL "device-model"
#define GST_TAG_CREATOR_TOOL "creator-tool"
#define GST_TAG_IMAGE_XRESOLUTION "image-xresolution"
#define GST_TAG_IMAGE_YRESOLUTION "image-yresolution"
#define GST_TAG_CAPTURE_EXPOSURE_TIME "capture-exposute-time"
#define GST_TAG_CAPTURE_FNUMBER "captute-fnumber"
#define GST_TAG_CAPTURE_EXPOSURE_PROGRAM "capture-exposure-program"
#define GST_TAG_CAPTURE_BRIGHTNESS "capture-brightness"
#define GST_TAG_CAPTURE_WHITE_BALANCE "capture-white-balance"
#define GST_TAG_CAPTURE_DIGITAL_ZOOM "capture-digital-zoom"
#define GST_TAG_CAPTURE_GAIN "capture-gain"
#define GST_TAG_CAPTURE_CONTRAST "capture-contrast"
#define GST_TAG_CAPTURE_SATURATION "capture-saturation"
extern void
metadata_tags_register (void);

6
ext/metadata/metadataxmp.c
View file

@ -55,10 +55,10 @@ metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping)
{
GST_LOG ("XMP not defined, here I should send just one tag as whole chunk");
if (mapping & METADATA_TAG_MAP_WHOLECHUNK)
if (mapping & METADATA_TAG_MAP_WHOLECHUNK) {
GST_LOG ("XMP not defined, here I should send just one tag as whole chunk");
metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
}
}