diff options
Diffstat (limited to 'src/tracker-extract/tracker-extract-png.c')
| -rw-r--r-- | src/tracker-extract/tracker-extract-png.c | 729 |
1 files changed, 0 insertions, 729 deletions
diff --git a/src/tracker-extract/tracker-extract-png.c b/src/tracker-extract/tracker-extract-png.c deleted file mode 100644 index 0e1976541..000000000 --- a/src/tracker-extract/tracker-extract-png.c +++ /dev/null @@ -1,729 +0,0 @@ -/* - * Copyright (C) 2006, Jamie McCracken <jamiemcc@gnome.org> - * Copyright (C) 2008, Nokia <ivan.frade@nokia.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -#include "config.h" - -#include <png.h> - -#include <libtracker-common/tracker-file-utils.h> -#include <libtracker-common/tracker-date-time.h> -#include <libtracker-extract/tracker-extract.h> - -#define RFC1123_DATE_FORMAT "%d %B %Y %H:%M:%S %z" -#define CM_TO_INCH 0.393700787 - -typedef struct { - const gchar *title; - const gchar *copyright; - const gchar *creator; - const gchar *description; - const gchar *date; - const gchar *license; - const gchar *artist; - const gchar *make; - const gchar *model; - const gchar *orientation; - const gchar *white_balance; - const gchar *fnumber; - const gchar *flash; - const gchar *focal_length; - const gchar *exposure_time; - const gchar *iso_speed_ratings; - const gchar *metering_mode; - const gchar *comment; - const gchar *city; - const gchar *state; - const gchar *address; - const gchar *country; - const gchar *gps_direction; -} MergeData; - -typedef struct { - const gchar *author; - const gchar *creator; - const gchar *description; - const gchar *comment; - const gchar *copyright; - gchar *creation_time; - const gchar *title; - const gchar *disclaimer; - const gchar *software; -} PngData; - -static gchar * -rfc1123_to_iso8601_date (const gchar *date) -{ - /* From: ex. RFC1123 date: "22 May 1997 18:07:10 -0600" - * To : ex. ISO8601 date: "2007-05-22T18:07:10-0600" - */ - return tracker_date_format_to_iso8601 (date, RFC1123_DATE_FORMAT); -} - -#if defined(PNG_iTXt_SUPPORTED) && (defined(HAVE_EXEMPI) || defined(HAVE_LIBEXIF)) - -/* Handle raw profiles by Imagemagick (at least). Hex encoded with - * line-changes and other (undocumented/unofficial) twists. - */ -static gchar * -raw_profile_new (const gchar *input, - const guint input_length, - guint *output_length) -{ - static const gchar* const lut = "0123456789abcdef"; - gchar *output; - const gchar *ptr; - const gchar *length_ptr; - gsize size; - gchar *length_str; - guint length; - - size_t len; - size_t i; - size_t o; - char *p; - char *q; - - ptr = input; - - if (*ptr != '\n') { - return NULL; - } - - ptr++; - - if (!g_ascii_isalpha (*ptr)) { - return NULL; - } - - /* Skip the type string */ - do { - ptr++; - } while (g_ascii_isalpha (*ptr)); - - if (*ptr != '\n') { - return NULL; - } - - /* Hop over whitespaces */ - do { - ptr++; - } while (*ptr == ' '); - - if (!g_ascii_isdigit (*ptr)) { - return NULL; - } - - /* Get the length string */ - length_ptr = ptr; - size = 1; - - do { - ptr++; - size++; - } while (g_ascii_isdigit (*ptr)); - - length_str = g_strndup (length_ptr, size - 1); - - if (*ptr != '\n') { - return NULL; - } - - ptr++; - - length = atoi (length_str); - g_free (length_str); - - len = length; - i = 0; - o = 0; - - output = malloc (length + 1); /* A bit less with non-valid */ - - o = 0; - while (o < len) { - do { - gchar a = ptr[i]; - p = strchr (lut, a); - i++; - } while (p == 0); - - do { - gchar b = ptr[i]; - q = strchr (lut, b); - i++; - } while (q == 0); - - output[o] = (((p - lut) << 4) | (q - lut)); - o++; - } - - output[o] = '\0'; - *output_length = o; - - return output; -} - -#endif /* defined(PNG_iTXt_SUPPORTED) && (defined(HAVE_EXEMPI) || defined(HAVE_LIBEXIF)) */ - -static void -read_metadata (TrackerResource *metadata, - png_structp png_ptr, - png_infop info_ptr, - png_infop end_ptr, - const gchar *uri) -{ - MergeData md = { 0 }; - PngData pd = { 0 }; - TrackerExifData *ed = NULL; - TrackerXmpData *xd = NULL; - png_infop info_ptrs[2]; - png_textp text_ptr; - gint info_index; - gint num_text; - gint i; - gint found; - GPtrArray *keywords; - - info_ptrs[0] = info_ptr; - info_ptrs[1] = end_ptr; - - for (info_index = 0; info_index < 2; info_index++) { - if ((found = png_get_text (png_ptr, info_ptrs[info_index], &text_ptr, &num_text)) < 1) { - g_debug ("Calling png_get_text() returned %d (< 1)", found); - continue; - } - - for (i = 0; i < num_text; i++) { - if (!text_ptr[i].key || !text_ptr[i].text || text_ptr[i].text[0] == '\0') { - continue; - } - -#if defined(HAVE_EXEMPI) && defined(PNG_iTXt_SUPPORTED) - if (g_strcmp0 ("XML:com.adobe.xmp", text_ptr[i].key) == 0) { - /* ATM tracker_extract_xmp_read supports setting xd - * multiple times, keep it that way as here it's - * theoretically possible that the function gets - * called multiple times - */ - xd = tracker_xmp_new (text_ptr[i].text, - text_ptr[i].itxt_length, - uri); - - continue; - } - - if (g_strcmp0 ("Raw profile type xmp", text_ptr[i].key) == 0) { - gchar *xmp_buffer; - guint xmp_buffer_length = 0; - guint input_len; - - if (text_ptr[i].text_length) { - input_len = text_ptr[i].text_length; - } else { - input_len = text_ptr[i].itxt_length; - } - - xmp_buffer = raw_profile_new (text_ptr[i].text, - input_len, - &xmp_buffer_length); - - if (xmp_buffer) { - xd = tracker_xmp_new (xmp_buffer, - xmp_buffer_length, - uri); - } - - g_free (xmp_buffer); - - continue; - } -#endif /*HAVE_EXEMPI && PNG_iTXt_SUPPORTED */ - -#if defined(HAVE_LIBEXIF) && defined(PNG_iTXt_SUPPORTED) - if (g_strcmp0 ("Raw profile type exif", text_ptr[i].key) == 0) { - gchar *exif_buffer; - guint exif_buffer_length = 0; - guint input_len; - - if (text_ptr[i].text_length) { - input_len = text_ptr[i].text_length; - } else { - input_len = text_ptr[i].itxt_length; - } - - exif_buffer = raw_profile_new (text_ptr[i].text, - input_len, - &exif_buffer_length); - - if (exif_buffer) { - ed = tracker_exif_new (exif_buffer, - exif_buffer_length, - uri); - } - - g_free (exif_buffer); - - continue; - } -#endif /* HAVE_LIBEXIF && PNG_iTXt_SUPPORTED */ - - if (g_strcmp0 (text_ptr[i].key, "Author") == 0) { - pd.author = text_ptr[i].text; - continue; - } - - if (g_strcmp0 (text_ptr[i].key, "Creator") == 0) { - pd.creator = text_ptr[i].text; - continue; - } - - if (g_strcmp0 (text_ptr[i].key, "Description") == 0) { - pd.description = text_ptr[i].text; - continue; - } - - if (g_strcmp0 (text_ptr[i].key, "Comment") == 0) { - pd.comment = text_ptr[i].text; - continue; - } - - if (g_strcmp0 (text_ptr[i].key, "Copyright") == 0) { - pd.copyright = text_ptr[i].text; - continue; - } - - if (g_strcmp0 (text_ptr[i].key, "Creation Time") == 0) { - pd.creation_time = rfc1123_to_iso8601_date (text_ptr[i].text); - continue; - } - - if (g_strcmp0 (text_ptr[i].key, "Title") == 0) { - pd.title = text_ptr[i].text; - continue; - } - - if (g_strcmp0 (text_ptr[i].key, "Disclaimer") == 0) { - pd.disclaimer = text_ptr[i].text; - continue; - } - - if (g_strcmp0(text_ptr[i].key, "Software") == 0) { - pd.software = text_ptr[i].text; - continue; - } - } - } - - if (!ed) { - ed = g_new0 (TrackerExifData, 1); - } - - if (!xd) { - xd = g_new0 (TrackerXmpData, 1); - } - - md.creator = tracker_coalesce_strip (3, xd->creator, pd.creator, pd.author); - md.title = tracker_coalesce_strip (5, xd->title, pd.title, ed->document_name, xd->title2, xd->pdf_title); - md.copyright = tracker_coalesce_strip (3, xd->rights, pd.copyright, ed->copyright); - md.license = tracker_coalesce_strip (2, xd->license, pd.disclaimer); - md.description = tracker_coalesce_strip (3, xd->description, pd.description, ed->description); - md.date = tracker_coalesce_strip (5, xd->date, xd->time_original, pd.creation_time, ed->time, ed->time_original); - md.comment = tracker_coalesce_strip (2, pd.comment, ed->user_comment); - md.artist = tracker_coalesce_strip (3, xd->artist, ed->artist, xd->contributor); - md.orientation = tracker_coalesce_strip (2, xd->orientation, ed->orientation); - md.exposure_time = tracker_coalesce_strip (2, xd->exposure_time, ed->exposure_time); - md.iso_speed_ratings = tracker_coalesce_strip (2, xd->iso_speed_ratings, ed->iso_speed_ratings); - md.fnumber = tracker_coalesce_strip (2, xd->fnumber, ed->fnumber); - md.flash = tracker_coalesce_strip (2, xd->flash, ed->flash); - md.focal_length = tracker_coalesce_strip (2, xd->focal_length, ed->focal_length); - md.metering_mode = tracker_coalesce_strip (2, xd->metering_mode, ed->metering_mode); - md.white_balance = tracker_coalesce_strip (2, xd->white_balance, ed->white_balance); - md.make = tracker_coalesce_strip (2, xd->make, ed->make); - md.model = tracker_coalesce_strip (2, xd->model, ed->model); - - keywords = g_ptr_array_new_with_free_func ((GDestroyNotify) g_free); - - if (md.comment) { - tracker_resource_set_string (metadata, "nie:comment", md.comment); - } - - if (md.license) { - tracker_resource_set_string (metadata, "nie:license", md.license); - } - - /* TODO: add ontology and store this ed->software */ - - if (md.creator) { - TrackerResource *creator = tracker_extract_new_contact (md.creator); - - tracker_resource_set_relation (metadata, "nco:creator", creator); - - g_object_unref (creator); - } - - tracker_guarantee_resource_date_from_file_mtime (metadata, - "nie:contentCreated", - md.date, - uri); - - if (md.description) { - tracker_resource_set_string (metadata, "nie:description", md.description); - } - - if (md.copyright) { - tracker_resource_set_string (metadata, "nie:copyright", md.copyright); - } - - tracker_guarantee_resource_title_from_file (metadata, - "nie:title", - md.title, - uri, - NULL); - - if (md.make || md.model) { - TrackerResource *equipment = tracker_extract_new_equipment (md.make, md.model); - - tracker_resource_set_relation (metadata, "nfo:equipment", equipment); - - g_object_unref (equipment); - } - - if (md.artist) { - TrackerResource *artist = tracker_extract_new_contact (md.artist); - - tracker_resource_set_relation (metadata, "nco:contributor", artist); - - g_object_unref (artist); - } - - if (md.orientation) { - TrackerResource *orientation; - - orientation = tracker_resource_new (md.orientation); - tracker_resource_set_relation (metadata, "nfo:orientation", orientation); - g_object_unref (orientation); - } - - if (md.exposure_time) { - tracker_resource_set_string (metadata, "nmm:exposureTime", md.exposure_time); - } - - if (md.iso_speed_ratings) { - tracker_resource_set_string (metadata, "nmm:isoSpeed", md.iso_speed_ratings); - } - - if (md.white_balance) { - TrackerResource *white_balance; - - white_balance = tracker_resource_new (md.white_balance); - tracker_resource_set_relation (metadata, "nmm:meteringMode", white_balance); - g_object_unref (white_balance); - } - - if (md.fnumber) { - tracker_resource_set_string (metadata, "nmm:fnumber", md.fnumber); - } - - if (md.flash) { - TrackerResource *flash; - - flash = tracker_resource_new (md.flash); - tracker_resource_set_relation (metadata, "nmm:flash", flash); - g_object_unref (flash); - } - - if (md.focal_length) { - tracker_resource_set_string (metadata, "nmm:focalLength", md.focal_length); - } - - if (md.metering_mode) { - TrackerResource *metering; - - metering = tracker_resource_new (md.metering_mode); - tracker_resource_set_relation (metadata, "nmm:meteringMode", metering); - g_object_unref (metering); - } - - if (xd->keywords) { - tracker_keywords_parse (keywords, xd->keywords); - } - - if (xd->pdf_keywords) { - tracker_keywords_parse (keywords, xd->pdf_keywords); - } - - if (xd->rating) { - tracker_resource_set_string (metadata, "nao:numericRating", xd->rating); - } - - if (xd->subject) { - tracker_keywords_parse (keywords, xd->subject); - } - - if (xd->publisher) { - TrackerResource *publisher = tracker_extract_new_contact (xd->publisher); - - tracker_resource_set_relation (metadata, "nco:creator", publisher); - - g_object_unref (publisher); - } - - if (xd->type) { - tracker_resource_set_string (metadata, "dc:type", xd->type); - } - - if (xd->format) { - tracker_resource_set_string (metadata, "dc:format", xd->format); - } - - if (xd->identifier) { - tracker_resource_set_string (metadata, "dc:identifier", xd->identifier); - } - - if (xd->source) { - tracker_resource_set_string (metadata, "dc:source", xd->source); - } - - if (xd->language) { - tracker_resource_set_string (metadata, "dc:language", xd->language); - } - - if (xd->relation) { - tracker_resource_set_string (metadata, "dc:relation", xd->relation); - } - - if (xd->coverage) { - tracker_resource_set_string (metadata, "dc:coverage", xd->coverage); - } - - if (xd->address || xd->state || xd->country || xd->city || - xd->gps_altitude || xd->gps_latitude || xd-> gps_longitude) { - - TrackerResource *location = tracker_extract_new_location (xd->address, - xd->state, xd->city, xd->country, xd->gps_altitude, - xd->gps_latitude, xd-> gps_longitude); - - tracker_resource_set_relation (metadata, "slo:location", location); - - g_object_unref (location); - } - - if (xd->gps_direction) { - tracker_resource_set_string(metadata, "nfo:heading", xd->gps_direction); - } - - if (ed->x_resolution) { - gdouble value; - - value = ed->resolution_unit != 3 ? g_strtod (ed->x_resolution, NULL) : g_strtod (ed->x_resolution, NULL) * CM_TO_INCH; - tracker_resource_set_double (metadata, "nfo:horizontalResolution", value); - } - - if (ed->y_resolution) { - gdouble value; - - value = ed->resolution_unit != 3 ? g_strtod (ed->y_resolution, NULL) : g_strtod (ed->y_resolution, NULL) * CM_TO_INCH; - tracker_resource_set_double (metadata, "nfo:verticalResolution", value); - } - - if (xd->regions) { - tracker_xmp_apply_regions_to_resource (metadata, xd); - } - - for (i = 0; i < keywords->len; i++) { - TrackerResource *tag; - const gchar *p; - - p = g_ptr_array_index (keywords, i); - - tag = tracker_extract_new_tag (p); - - tracker_resource_set_relation (metadata, "nao:hasTag", tag); - - g_object_unref (tag); - } - g_ptr_array_free (keywords, TRUE); - - if (g_strcmp0(pd.software, "gnome-screenshot") == 0) { - tracker_resource_add_uri (metadata, "nie:isPartOf", "nfo:image-category-screenshot"); - } - - tracker_exif_free (ed); - tracker_xmp_free (xd); - g_free (pd.creation_time); -} - -static gboolean -guess_dlna_profile (gint depth, - gint width, - gint height, - const gchar **dlna_profile, - const gchar **dlna_mimetype) -{ - const gchar *profile = NULL; - - if (dlna_profile) { - *dlna_profile = NULL; - } - - if (dlna_mimetype) { - *dlna_mimetype = NULL; - } - - if (width == 120 && height == 120) { - profile = "PNG_LRG_ICO"; - } else if (width == 48 && height == 48) { - profile = "PNG_SM_ICO"; - } else if (width <= 160 && height <= 160) { - profile = "PNG_TN"; - } else if (depth <= 32 && width <= 4096 && height <= 4096) { - profile = "PNG_LRG"; - } - - if (profile) { - if (dlna_profile) { - *dlna_profile = profile; - } - - if (dlna_mimetype) { - *dlna_mimetype = "image/png"; - } - - return TRUE; - } - - return FALSE; -} - -G_MODULE_EXPORT gboolean -tracker_extract_get_metadata (TrackerExtractInfo *info) -{ - TrackerResource *metadata; - goffset size; - FILE *f; - png_structp png_ptr; - png_infop info_ptr; - png_infop end_ptr; - png_bytep row_data; - guint row; - png_uint_32 width, height; - gint bit_depth, color_type; - gint interlace_type, compression_type, filter_type; - const gchar *dlna_profile, *dlna_mimetype; - gchar *filename, *uri; - GFile *file; - - file = tracker_extract_info_get_file (info); - filename = g_file_get_path (file); - size = tracker_file_get_size (filename); - - if (size < 64) { - return FALSE; - } - - f = tracker_file_open (filename); - g_free (filename); - - if (!f) { - return FALSE; - } - - png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, - NULL, - NULL, - NULL); - if (!png_ptr) { - tracker_file_close (f, FALSE); - return FALSE; - } - - info_ptr = png_create_info_struct (png_ptr); - if (!info_ptr) { - png_destroy_read_struct (&png_ptr, NULL, NULL); - tracker_file_close (f, FALSE); - return FALSE; - } - - end_ptr = png_create_info_struct (png_ptr); - if (!end_ptr) { - png_destroy_read_struct (&png_ptr, &info_ptr, NULL); - tracker_file_close (f, FALSE); - return FALSE; - } - - if (setjmp (png_jmpbuf (png_ptr))) { - png_destroy_read_struct (&png_ptr, &info_ptr, &end_ptr); - tracker_file_close (f, FALSE); - return FALSE; - } - - png_init_io (png_ptr, f); - png_read_info (png_ptr, info_ptr); - - if (!png_get_IHDR (png_ptr, - info_ptr, - &width, - &height, - &bit_depth, - &color_type, - &interlace_type, - &compression_type, - &filter_type)) { - png_destroy_read_struct (&png_ptr, &info_ptr, &end_ptr); - tracker_file_close (f, FALSE); - return FALSE; - } - - /* Read the image. FIXME We should be able to skip this step and - * just get the info from the end. This causes some errors atm. - */ - row_data = png_malloc (png_ptr, png_get_rowbytes (png_ptr, info_ptr)); - for (row = 0; row < height; row++) - png_read_row (png_ptr, row_data, NULL); - png_free (png_ptr, row_data); - - png_read_end (png_ptr, end_ptr); - - metadata = tracker_resource_new (NULL); - - tracker_resource_add_uri (metadata, "rdf:type", "nfo:Image"); - tracker_resource_add_uri (metadata, "rdf:type", "nmm:Photo"); - - uri = g_file_get_uri (file); - - read_metadata (metadata, png_ptr, info_ptr, end_ptr, uri); - g_free (uri); - - tracker_resource_set_int64 (metadata, "nfo:width", width); - tracker_resource_set_int64 (metadata, "nfo:height", height); - - if (guess_dlna_profile (bit_depth, width, height, &dlna_profile, &dlna_mimetype)) { - tracker_resource_set_string (metadata, "nmm:dlnaProfile", dlna_profile); - tracker_resource_set_string (metadata, "nmm:dlnaMime", dlna_mimetype); - } - - png_destroy_read_struct (&png_ptr, &info_ptr, &end_ptr); - tracker_file_close (f, FALSE); - - tracker_extract_info_set_resource (info, metadata); - g_object_unref (metadata); - - return TRUE; -} |