Port MatrixImageInfo to C
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49a6d84a74
commit
d6ea38832f
@ -495,3 +495,329 @@ matrix_file_info_get_json_node(MatrixFileInfo *file_info, GError **error)
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return node;
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}
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/**
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* MatrixImageInfo: (ref-func matrix_image_info_ref) (unref-func matrix_image_info_unref)
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*
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* Information about an image referred to in an URL.
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*/
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struct _MatrixImageInfo {
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gssize size;
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gint height;
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gint width;
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gchar *mimetype;
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volatile int refcount;
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};
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G_DEFINE_BOXED_TYPE(MatrixImageInfo, matrix_image_info, (GBoxedCopyFunc)matrix_image_info_ref, (GBoxedFreeFunc)matrix_image_info_unref);
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/**
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* matrix_image_info_new:
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*
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* Create a new #MatrixImageInfo object with a reference count of 1.
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*
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* Returns: (transfer full): A new #MatrixImageInfo object.
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*/
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MatrixImageInfo *
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matrix_image_info_new()
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{
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MatrixImageInfo *image_info = g_new0(MatrixImageInfo, 1);
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image_info->refcount = 1;
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image_info->size = -1;
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image_info->height = -1;
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image_info->width = -1;
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return image_info;
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}
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/**
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* matrix_image_info_ref:
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* @image_info: (nullable): A #MatrixImageInfo object
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*
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* Increment reference count on @image_info.
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*
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* Returns: (transfer full): @image_info
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*/
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MatrixImageInfo *
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matrix_image_info_ref(MatrixImageInfo *matrix_image_info)
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{
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g_return_val_if_fail(matrix_image_info != NULL, NULL);
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matrix_image_info->refcount++;
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return matrix_image_info;
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}
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static void
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matrix_image_info_destroy(MatrixImageInfo *image_info)
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{
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g_free(image_info->mimetype);
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}
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/**
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* matrix_image_info_unref:
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* @image_info: (nullable) (transfer full): a #MatrixImageInfo object
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*
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* Decrement reference count on @image_info. If reference count reaches zero, destroy the whole
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* object.
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*/
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void
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matrix_image_info_unref(MatrixImageInfo *matrix_image_info)
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{
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g_return_if_fail(matrix_image_info != NULL);
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if (--(matrix_image_info->refcount) == 0) {
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matrix_image_info_destroy(matrix_image_info);
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g_free(matrix_image_info);
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}
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}
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/**
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* matrix_image_info_set_size:
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* @image_info: a #MatrixImageInfo object
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* @size: the size to set
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*
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* Set the size of the image described by @image_info.
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*
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* -1 is considered an invalid value by matrix_image_info_get_json_node(), but can be set to
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* indicate incompleteness.
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*/
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void
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matrix_image_info_set_size(MatrixImageInfo *matrix_image_info, gssize size)
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{
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g_return_if_fail(matrix_image_info != NULL);
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matrix_image_info->size = size;
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}
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/**
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* matrix_image_info_get_size:
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* @image_info: A #MatrixImageInfo object
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*
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* Get the size of the image described by @image_info.
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*
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* Returns: the image size or -1 if not set
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*/
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gssize
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matrix_image_info_get_size(MatrixImageInfo *matrix_image_info)
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{
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g_return_val_if_fail(matrix_image_info != NULL, -1);
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return matrix_image_info->size;
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}
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/**
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* matrix_image_info_set_height:
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* @image_info: A #MatrixImageInfo object
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* @height: The height of the image, in pixels
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*
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* Set the height of the image described by @image_info.
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*
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* -1 is considered an invalid value by matrix_image_info_get_json_node(), but can be set to
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* indicate incompleteness.
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*/
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void
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matrix_image_info_set_height(MatrixImageInfo *matrix_image_info, gint height)
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{
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g_return_if_fail(matrix_image_info != NULL);
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matrix_image_info->height = height;
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}
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/**
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* matrix_image_info_get_heiht:
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* @image_info: A #MatrixImageInfo object
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*
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* Get the height of the image described by @image_info.
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*
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* Returns: the height, or -1 if not set.
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*/
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gint
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matrix_image_info_get_height(MatrixImageInfo *matrix_image_info)
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{
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g_return_val_if_fail(matrix_image_info != NULL, -1);
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return matrix_image_info->height;
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}
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/**
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* matrix_image_info_set_width:
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* @image_info: A #MatrixImageInfo object
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* @width: the width of the image, in pixels
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*
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* Set the width of the image described by @image_info.
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*
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* -1 is considered an invalid value by matrix_image_info_get_json_node(), but can be set to
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* indicate incompleteness.
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*/
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void
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matrix_image_info_set_width(MatrixImageInfo *matrix_image_info, gint width)
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{
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g_return_if_fail(matrix_image_info != NULL);
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matrix_image_info->width = width;
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}
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/**
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* matrix_image_info_get_width:
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* @image_info: A #MatrixImageInfo object
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*
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* Get the width of the image described by @image_info.
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*
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* Returns: the width, or -1 if not set.
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*/
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gint
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matrix_image_info_get_width(MatrixImageInfo *matrix_image_info)
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{
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g_return_val_if_fail(matrix_image_info != NULL, -1);
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return matrix_image_info->height;
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}
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/**
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* matrix_image_info_set_mimetype:
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* @image_info: A #MatrixImageInfo object
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* @mimetype: (transfer none) (nullable): the MIME type of the image
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*
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* Set the MIME type of the image described by @image_info.
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*
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* NULL is considered an invalid value by matrix_image_info_get_json_node(), but can be set to
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* indicate incompleteness.
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*/
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void
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matrix_image_info_set_mimetype(MatrixImageInfo *matrix_image_info, const gchar *mimetype)
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{
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g_return_if_fail(matrix_image_info != NULL);
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g_free(matrix_image_info->mimetype);
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matrix_image_info->mimetype = g_strdup(mimetype);
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}
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/**
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* matrix_image_info_get_mimetype:
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* @image_info: A #MatrixImageInfo object
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*
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* Get the MIME type of the image described by @image_info.
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*
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* Returns: (transfer none) (nullable): the MIME type, or NULL if not set.
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*/
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const gchar *
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matrix_image_info_get_mimetype(MatrixImageInfo *matrix_image_info)
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{
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g_return_val_if_fail(matrix_image_info != NULL, NULL);
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return matrix_image_info->mimetype;
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}
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/**
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* matrix_image_info_set_from_json:
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* @image_info: A #MatrixImageInfo object
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* @json_data: (nullable): a #JsonNode object
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*
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* Load the data in @json_data into the fields of @image_info_info. @json_data must hold a valid Matrix
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* image info object with a size and mimetype fields.
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*/
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void
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matrix_image_info_set_from_json(MatrixImageInfo *image_info, JsonNode *json_data)
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{
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JsonObject *root = NULL;
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JsonNode * node;
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root = json_node_get_object(json_data);
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if ((node = json_object_get_member(root, "w"))) {
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image_info->width = json_node_get_int(node);
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} else if (DEBUG) {
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g_warning("w is missing from an ImageInfo");
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}
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if ((node = json_object_get_member(root, "h"))) {
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image_info->height = json_node_get_int(node);
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} else if (DEBUG) {
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g_warning("h is missing from an ImageInfo");
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}
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if ((node = json_object_get_member(root, "size"))) {
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image_info->size = json_node_get_int(node);
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} else if (DEBUG) {
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g_warning("size is missing from an ImageInfo");
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}
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if ((node = json_object_get_member(root, "mimetype"))) {
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g_free(image_info->mimetype);
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image_info->mimetype = g_strdup(json_node_get_string(node));
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} else if (DEBUG) {
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g_warning("mimetype is missing from an ImageInfo");
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}
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}
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/**
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* matrix_image_info_get_json_node:
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* @image_info: a #MatrixImageInfo object
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* @error: (nullable): a #GError, or NULL to ignore
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*
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* Convert @image_info to a #JsonNode. If the file size is negative or the MIME type is not set,
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* this function returns NULL and @error is set to #MATRIX_ERROR_INCOMPLETE.
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*
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* Returns: (transfer full) (nullable): a #JsonNode with a valid Matrix image info object, or NULL
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* if any of the fields are invalid.
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*/
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JsonNode *
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matrix_image_info_get_json_node(MatrixImageInfo *image_info, GError **error)
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{
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JsonNode *node;
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JsonObject *obj;
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if ((image_info->size == -1)
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|| (image_info->height == -1)
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|| (image_info->width == -1)
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|| (image_info->mimetype == NULL)) {
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g_set_error(error, MATRIX_ERROR, MATRIX_ERROR_INCOMPLETE,
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"Won't generate an ImageInfo without all fields set.");
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return NULL;
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}
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node = json_node_new(JSON_NODE_OBJECT);
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obj = json_object_new();
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json_node_set_object(node, obj);
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json_object_set_int_member(obj, "size", image_info->size);
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json_object_set_int_member(obj, "h", image_info->height);
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json_object_set_int_member(obj, "w", image_info->width);
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json_object_set_string_member(obj, "mimetype", image_info->mimetype);
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return node;
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}
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/**
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* matrix_image_info_differs:
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* @image_info: A #MatrixImageInfo object
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* @other: A #MatrixImageInfo object to compare @image_info with
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*
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* Check if the two ImageInfo objects are identical (ie. hold the same data).
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*
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* Returns: TRUE if the two objects hold the same values, FALSE otherwise
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*/
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gboolean
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matrix_image_info_differs(MatrixImageInfo *image_info, MatrixImageInfo *other)
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{
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// If we compare image_info with itself, they will obviously not differ
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if (G_UNLIKELY(image_info == other)) {
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return FALSE;
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}
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// If we compare NULL and non-NULL values, it obviously differs
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if ((image_info == NULL) || (other == NULL)) {
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return TRUE;
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}
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// At this point, we are definitely comparing two different structs,
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// let’s compare field by field
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return ((image_info->size == other->size) ||
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(image_info->width == other->width) ||
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(image_info->height == other->height) ||
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(g_strcmp0(image_info->mimetype, other->mimetype) != 0));
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}
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@ -211,4 +211,24 @@ const gchar *matrix_file_info_get_mimetype(MatrixFileInfo *file_info);
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void matrix_file_info_set_from_json(MatrixFileInfo *file_info, JsonNode *json_data);
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JsonNode *matrix_file_info_get_json_node(MatrixFileInfo *file_info, GError **error);
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typedef struct _MatrixImageInfo MatrixImageInfo;
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GType matrix_image_info_get_type(void);
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# define MATRIX_TYPE_IMAGE_INFO matrix_image_info_get_type()
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MatrixImageInfo *matrix_image_info_new(void);
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MatrixImageInfo *matrix_image_info_ref(MatrixImageInfo *image_info);
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void matrix_image_info_unref(MatrixImageInfo *image_info);
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void matrix_image_info_set_size(MatrixImageInfo *image_info, gssize size);
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gssize matrix_image_info_get_size(MatrixImageInfo *image_info);
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void matrix_image_info_set_height(MatrixImageInfo *image_info, gint height);
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gint matrix_image_info_get_height(MatrixImageInfo *image_info);
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void matrix_image_info_set_width(MatrixImageInfo *image_info, gint width);
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gint matrix_image_info_get_width(MatrixImageInfo *image_info);
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void matrix_image_info_set_mimetype(MatrixImageInfo *image_info, const gchar *mimetype);
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const gchar *matrix_image_info_get_mimetype(MatrixImageInfo *image_info);
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void matrix_image_info_set_from_json(MatrixImageInfo *image_info, JsonNode *json_data);
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JsonNode *matrix_image_info_get_json_node(MatrixImageInfo *image_info, GError **error);
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gboolean matrix_image_info_differs(MatrixImageInfo *image_info, MatrixImageInfo *other);
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#endif /* __MATRIX_TYPE_H__ */
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@ -17,88 +17,6 @@
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*/
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namespace Matrix {
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public struct ImageInfo {
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int? size;
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int? height;
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int? width;
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string? mimetype;
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public void
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set_from_json(Json.Node json_data)
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{
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size = null;
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mimetype = null;
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height = null;
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width = null;
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var root = json_data.get_object();
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Json.Node? node;
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if ((node = root.get_member("w")) != null) {
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width = (int)node.get_int();
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} else if (Config.DEBUG) {
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warning("w is missing from an ImageInfo");
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}
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if ((node = root.get_member("h")) != null) {
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height = (int)node.get_int();
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} else if (Config.DEBUG) {
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warning("h is missing from an ImageInfo");
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}
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if ((node = root.get_member("size")) != null) {
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size = (int)node.get_int();
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} else if (Config.DEBUG) {
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warning("size is missing from an ImageInfo");
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}
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if ((node = root.get_member("mimetype")) != null) {
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mimetype = node.get_string();
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} else if (Config.DEBUG) {
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warning("mimetype is missing from an ImageInfo");
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}
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}
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public Json.Node
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get_json_node()
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throws Matrix.Error
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{
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if ((size == null)
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|| (height == null)
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|| (width == null)
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|| (mimetype == null)) {
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throw new Matrix.Error.INCOMPLETE(
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"Won't generate an ImageInfo without all fields set.");
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}
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var node = new Json.Node(Json.NodeType.OBJECT);
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var obj = new Json.Object();
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node.set_object(obj);
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obj.set_int_member("size", size);
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obj.set_int_member("h", height);
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obj.set_int_member("w", width);
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obj.set_string_member("mimetype", mimetype);
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return node;
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}
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/**
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* Check if two ImageInfo objects are identical.
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*
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* @param other the ImageInfo object to compare with
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* @return true if the two objects hold different values
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*/
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public bool
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differs(ImageInfo other)
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{
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return ((size != other.size)
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|| (height != other.height)
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|| (width != other.width)
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|| (mimetype != other.mimetype));
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}
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}
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public struct AudioInfo {
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int? size;
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string? mimetype;
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@ -218,6 +218,24 @@ namespace Matrix {
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throws Matrix.Error;
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}
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[CCode (cheader_filename = "matrix-c-types.h")]
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public struct ImageInfo {
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public ssize get_size();
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public void set_size(ssize size);
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public int get_height();
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public void set_height(int height);
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public int get_width();
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public void set_width(int width);
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string? mimetype;
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public void set_from_json(Json.Node json_data);
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public Json.Node get_json_node()
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throws Matrix.Error;
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public bool differs(ImageInfo other);
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}
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/* Utilities */
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[CCode (cheader_filename = "utils.h", cname = "_matrix_g_enum_to_string")]
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public string? _g_enum_value_to_nick(GLib.Type enum_type, int value, bool convert_dashes = true);
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