--- /dev/null
+/* GStreamer
+ *
+ * Copyright (C) 2009 Igalia S.L
+ * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstdataurisrc.h"
+
+#include <string.h>
+#include <gst/base/gsttypefindhelper.h>
+
+GST_DEBUG_CATEGORY (data_uri_src_debug);
+#define GST_CAT_DEFAULT (data_uri_src_debug)
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+enum
+{
+ PROP_0,
+ PROP_URI,
+};
+
+static void gst_data_uri_src_finalize (GObject * object);
+static void gst_data_uri_src_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_data_uri_src_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GstCaps *gst_data_uri_src_get_caps (GstBaseSrc * src);
+static gboolean gst_data_uri_src_get_size (GstBaseSrc * src, guint64 * size);
+static gboolean gst_data_uri_src_is_seekable (GstBaseSrc * src);
+static GstFlowReturn gst_data_uri_src_create (GstBaseSrc * src, guint64 offset,
+ guint size, GstBuffer ** buf);
+static gboolean gst_data_uri_src_check_get_range (GstBaseSrc * src);
+
+static void gst_data_uri_src_handler_init (gpointer g_iface,
+ gpointer iface_data);
+static GstURIType gst_data_uri_src_get_uri_type (void);
+static gchar **gst_data_uri_src_get_protocols (void);
+static const gchar *gst_data_uri_src_get_uri (GstURIHandler * handler);
+static gboolean gst_data_uri_src_set_uri (GstURIHandler * handler,
+ const gchar * uri);
+
+static void
+_do_init (GType gtype)
+{
+ static const GInterfaceInfo urihandler_info = {
+ gst_data_uri_src_handler_init,
+ 0, 0
+ };
+
+ GST_DEBUG_CATEGORY_INIT (data_uri_src_debug, "dataurisrc", 0,
+ "data: URI source");
+ g_type_add_interface_static (gtype, GST_TYPE_URI_HANDLER, &urihandler_info);
+}
+
+GST_BOILERPLATE_FULL (GstDataURISrc, gst_data_uri_src, GstBaseSrc,
+ GST_TYPE_BASE_SRC, _do_init);
+
+static void
+gst_data_uri_src_base_init (gpointer klass)
+{
+ GstElementClass *element_class = (GstElementClass *) (klass);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_template));
+ gst_element_class_set_details_simple (element_class,
+ "data: URI source element", "Source", "Handles data: uris",
+ "Philippe Normand <pnormand@igalia.com>, "
+ "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
+
+}
+
+static void
+gst_data_uri_src_class_init (GstDataURISrcClass * klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+ GstBaseSrcClass *basesrc_class = (GstBaseSrcClass *) klass;
+
+ gobject_class->finalize = gst_data_uri_src_finalize;
+ gobject_class->set_property = gst_data_uri_src_set_property;
+ gobject_class->get_property = gst_data_uri_src_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_URI,
+ g_param_spec_string ("uri",
+ "URI",
+ "URI that should be used",
+ NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_data_uri_src_get_caps);
+ basesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_data_uri_src_get_size);
+ basesrc_class->is_seekable = GST_DEBUG_FUNCPTR (gst_data_uri_src_is_seekable);
+ basesrc_class->create = GST_DEBUG_FUNCPTR (gst_data_uri_src_create);
+ basesrc_class->check_get_range =
+ GST_DEBUG_FUNCPTR (gst_data_uri_src_check_get_range);
+}
+
+static void
+gst_data_uri_src_init (GstDataURISrc * src, GstDataURISrcClass * g_class)
+{
+ gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_BYTES);
+}
+
+static void
+gst_data_uri_src_finalize (GObject * object)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (object);
+
+ g_free (src->uri);
+ src->uri = NULL;
+
+ if (src->buffer)
+ gst_buffer_unref (src->buffer);
+ src->buffer = NULL;
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_data_uri_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (object);
+
+ switch (prop_id) {
+ case PROP_URI:
+ gst_data_uri_src_set_uri (GST_URI_HANDLER (src),
+ g_value_get_string (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_data_uri_src_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (object);
+
+ switch (prop_id) {
+ case PROP_URI:
+ g_value_set_string (value,
+ gst_data_uri_src_get_uri (GST_URI_HANDLER (src)));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstCaps *
+gst_data_uri_src_get_caps (GstBaseSrc * basesrc)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (basesrc);
+ GstCaps *caps;
+
+ GST_OBJECT_LOCK (src);
+ if (!src->buffer || !GST_BUFFER_CAPS (src->buffer))
+ caps = gst_caps_new_empty ();
+ else
+ caps = gst_buffer_get_caps (src->buffer);
+ GST_OBJECT_UNLOCK (src);
+
+ return caps;
+}
+
+static gboolean
+gst_data_uri_src_get_size (GstBaseSrc * basesrc, guint64 * size)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (basesrc);
+ gboolean ret;
+
+ GST_OBJECT_LOCK (src);
+ if (!src->buffer) {
+ ret = FALSE;
+ *size = -1;
+ } else {
+ ret = TRUE;
+ *size = GST_BUFFER_SIZE (src->buffer);
+ }
+ GST_OBJECT_UNLOCK (src);
+
+ return ret;
+}
+
+static gboolean
+gst_data_uri_src_is_seekable (GstBaseSrc * basesrc)
+{
+ return TRUE;
+}
+
+static GstFlowReturn
+gst_data_uri_src_create (GstBaseSrc * basesrc, guint64 offset, guint size,
+ GstBuffer ** buf)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (basesrc);
+ GstFlowReturn ret;
+
+ GST_OBJECT_LOCK (src);
+ if (!src->buffer) {
+ ret = GST_FLOW_NOT_NEGOTIATED;
+ GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL), (NULL));
+ } else if (offset + size > GST_BUFFER_SIZE (src->buffer)) {
+ ret = GST_FLOW_UNEXPECTED;
+ } else {
+ ret = GST_FLOW_OK;
+ *buf = gst_buffer_create_sub (src->buffer, offset, size);
+ gst_buffer_set_caps (*buf, GST_BUFFER_CAPS (src->buffer));
+ }
+ GST_OBJECT_UNLOCK (src);
+
+ return ret;
+}
+
+static gboolean
+gst_data_uri_src_check_get_range (GstBaseSrc * basesrc)
+{
+ return TRUE;
+}
+
+static void
+gst_data_uri_src_handler_init (gpointer g_iface, gpointer iface_data)
+{
+ GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
+
+ iface->get_type = gst_data_uri_src_get_uri_type;
+ iface->get_protocols = gst_data_uri_src_get_protocols;
+ iface->get_uri = gst_data_uri_src_get_uri;
+ iface->set_uri = gst_data_uri_src_set_uri;
+}
+
+static GstURIType
+gst_data_uri_src_get_uri_type (void)
+{
+ return GST_URI_SRC;
+}
+
+static gchar **
+gst_data_uri_src_get_protocols (void)
+{
+ static gchar *protocols[] = { "data", 0 };
+
+ return protocols;
+}
+
+static const gchar *
+gst_data_uri_src_get_uri (GstURIHandler * handler)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (handler);
+
+ return src->uri;
+}
+
+static gboolean
+gst_data_uri_src_set_uri (GstURIHandler * handler, const gchar * uri)
+{
+ GstDataURISrc *src = GST_DATA_URI_SRC (handler);
+ gboolean ret = FALSE;
+ gchar *mimetype = NULL;
+ const gchar *parameters_start;
+ const gchar *data_start;
+ GstCaps *caps;
+ gboolean base64 = FALSE;
+ gchar *charset = NULL;
+
+ GST_OBJECT_LOCK (src);
+ if (GST_STATE (src) >= GST_STATE_PAUSED)
+ goto wrong_state;
+
+ /* uri must be an URI as defined in RFC 2397
+ * data:[<mediatype>][;base64],<data>
+ */
+ if (strncmp ("data:", uri, 5) != 0)
+ goto invalid_uri;
+
+ uri += 5;
+
+ parameters_start = strchr (uri, ';');
+ data_start = strchr (uri, ',');
+ if (data_start == NULL)
+ goto invalid_uri;
+
+ if (data_start != uri && parameters_start != uri)
+ mimetype =
+ g_strndup (uri,
+ (parameters_start ? parameters_start : data_start) - uri);
+ else
+ mimetype = g_strdup ("text/plain");
+
+ GST_DEBUG_OBJECT (src, "Mimetype: %s", mimetype);
+
+ if (parameters_start != NULL) {
+ gchar **walk;
+ gchar *parameters =
+ g_strndup (parameters_start + 1, data_start - parameters_start - 1);
+ gchar **parameters_strv;
+
+ parameters_strv = g_strsplit (parameters, ";", -1);
+
+ GST_DEBUG_OBJECT (src, "Parameters: ");
+ walk = parameters_strv;
+ while (*walk) {
+ GST_DEBUG_OBJECT (src, "\t %s", *walk);
+ if (strcmp ("base64", *walk) == 0) {
+ base64 = TRUE;
+ } else if (strncmp ("charset=", *walk, 8) == 0) {
+ charset = g_strdup (*walk + 8);
+ }
+ walk++;
+ }
+ g_free (parameters);
+ g_strfreev (parameters_strv);
+ }
+
+ /* Skip comma */
+ data_start += 1;
+ if (base64) {
+ gsize bsize;
+
+ src->buffer = gst_buffer_new ();
+ GST_BUFFER_DATA (src->buffer) =
+ (guint8 *) g_base64_decode (data_start, &bsize);
+ GST_BUFFER_MALLOCDATA (src->buffer) = GST_BUFFER_DATA (src->buffer);
+ GST_BUFFER_SIZE (src->buffer) = bsize;
+ } else {
+ gchar *data;
+
+ /* URI encoded, i.e. "percent" encoding */
+ data = g_uri_unescape_string (data_start, NULL);
+ if (data == NULL)
+ goto invalid_uri_encoded_data;
+
+ src->buffer = gst_buffer_new ();
+ GST_BUFFER_DATA (src->buffer) = (guint8 *) data;
+ GST_BUFFER_MALLOCDATA (src->buffer) = GST_BUFFER_DATA (src->buffer);
+ GST_BUFFER_SIZE (src->buffer) = strlen (data) + 1;
+ }
+
+ /* Convert to UTF8 */
+ if (strcmp ("text/plain", mimetype) == 0 &&
+ charset && strcasecmp ("US-ASCII", charset) != 0
+ && strcasecmp ("UTF-8", charset) != 0) {
+ gsize read;
+ gsize written;
+ gchar *old_data = (gchar *) GST_BUFFER_DATA (src->buffer);
+ gchar *data;
+
+ data =
+ g_convert_with_fallback (old_data, -1, "UTF-8", charset, "*", &read,
+ &written, NULL);
+ g_free (old_data);
+ GST_BUFFER_DATA (src->buffer) = GST_BUFFER_MALLOCDATA (src->buffer) =
+ (guint8 *) data;
+ GST_BUFFER_SIZE (src->buffer) = written;
+ }
+
+ caps = gst_type_find_helper_for_buffer (GST_OBJECT (src), src->buffer, NULL);
+ if (!caps)
+ caps = gst_caps_new_simple (mimetype, NULL);
+ gst_buffer_set_caps (src->buffer, caps);
+ gst_caps_unref (caps);
+
+ ret = TRUE;
+ GST_OBJECT_UNLOCK (src);
+out:
+ g_free (mimetype);
+ g_free (charset);
+
+
+ return ret;
+
+invalid_uri:
+ {
+ GST_OBJECT_UNLOCK (src);
+ GST_ELEMENT_ERROR (src, STREAM, FORMAT, (NULL), (NULL));
+ }
+ goto out;
+wrong_state:
+ {
+ GST_OBJECT_UNLOCK (src);
+ GST_ELEMENT_ERROR (src, CORE, FAILED, (NULL), (NULL));
+ }
+ goto out;
+invalid_uri_encoded_data:
+ {
+ GST_OBJECT_UNLOCK (src);
+ GST_ELEMENT_ERROR (src, STREAM, FORMAT, (NULL), (NULL));
+ }
+ goto out;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "dataurisrc",
+ GST_RANK_PRIMARY, GST_TYPE_DATA_URI_SRC);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "dataurisrc",
+ "data: URI source",
+ plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
projects / platform / upstream / gstreamer.git / commitdiff