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Extract the ICC profile and Exif data from HEIC

This commit is contained in:
Přemysl Eric Janouch 2021-12-11 15:49:48 +01:00
parent ac70c7724b
commit 7e92011ab2
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 32 additions and 1 deletions
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33
fastiv-io.c
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@ -1163,7 +1163,38 @@ load_libheif_image(struct heif_context *ctx, heif_item_id id, GError **error)
}
}
// TODO(p): Attach any ICC color profile and Exif data.
heif_item_id exif_id = 0;
if (heif_image_handle_get_list_of_metadata_block_IDs(
handle, "Exif", &exif_id, 1)) {
size_t exif_len = heif_image_handle_get_metadata_size(handle, exif_id);
void *exif = g_malloc0(exif_len);
err = heif_image_handle_get_metadata(handle, exif_id, exif);
if (err.code) {
g_warning("%s", err.message);
g_free(exif);
} else {
cairo_surface_set_user_data(surface, &fastiv_io_key_exif,
g_bytes_new_take(exif, exif_len),
(cairo_destroy_func_t) g_bytes_unref);
}
}
// https://loc.gov/preservation/digital/formats/fdd/fdd000526.shtml#factors
if (heif_image_handle_get_color_profile_type(handle) ==
heif_color_profile_type_prof) {
size_t icc_len = heif_image_handle_get_raw_color_profile_size(handle);
void *icc = g_malloc0(icc_len);
err = heif_image_handle_get_raw_color_profile(handle, icc);
if (err.code) {
g_warning("%s", err.message);
g_free(icc);
} else {
cairo_surface_set_user_data(surface, &fastiv_io_key_icc,
g_bytes_new_take(icc, icc_len),
(cairo_destroy_func_t) g_bytes_unref);
}
}
cairo_surface_mark_dirty(surface);
fail_process: