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Diffstat (limited to 'gst/debugutils/gstpushfilesrc.c')
-rw-r--r-- | gst/debugutils/gstpushfilesrc.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/gst/debugutils/gstpushfilesrc.c b/gst/debugutils/gstpushfilesrc.c new file mode 100644 index 00000000..47daa83e --- /dev/null +++ b/gst/debugutils/gstpushfilesrc.c @@ -0,0 +1,195 @@ +/* GStreamer Push File Source + * Copyright (C) <2007> Tim-Philipp Müller <tim centricular net> + * + * 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. + */ + +/** + * SECTION:element-pushfilesrc + * @see_also: filesrc + * + * This element is only useful for debugging purposes. It implements an URI + * protocol handler for the 'pushfile' protocol and behaves like a file source + * element that cannot be activated in pull-mode. This makes it very easy to + * debug demuxers or decoders that can operate both pull and push-based in + * connection with the playbin element (which creates a source based on the + * URI passed). + * + * <refsect2> + * <title>Example launch line</title> + * |[ + * gst-launch -m playbin uri=pushfile:///home/you/some/file.ogg + * ]| This plays back the given file using playbin, with the demuxer operating + * push-based. + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstpushfilesrc.h" + +#include <gst/gst.h> + +GST_DEBUG_CATEGORY_STATIC (pushfilesrc_debug); +#define GST_CAT_DEFAULT pushfilesrc_debug + +static const GstElementDetails pushfilesrc_details = +GST_ELEMENT_DETAILS ("Push File Source", + "Testing", + "Implements pushfile:// URI-handler for push-based file access", + "Tim-Philipp Müller <tim centricular net>"); + +static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +static void gst_push_file_src_uri_handler_init (gpointer g_iface, + gpointer iface_data); +static void gst_file_push_src_add_uri_handler (GType type); + +GST_BOILERPLATE_FULL (GstPushFileSrc, gst_push_file_src, GstBin, GST_TYPE_BIN, + gst_file_push_src_add_uri_handler); + +static void +gst_file_push_src_add_uri_handler (GType type) +{ + static const GInterfaceInfo info = { + gst_push_file_src_uri_handler_init, + NULL, + NULL + }; + + g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &info); + GST_DEBUG_CATEGORY_INIT (pushfilesrc_debug, "pushfilesrc", 0, + "pushfilesrc element"); +} + +static void +gst_push_file_src_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&srctemplate)); + + gst_element_class_set_details (element_class, &pushfilesrc_details); +} + +static void +gst_push_file_src_dispose (GObject * obj) +{ + GstPushFileSrc *src = GST_PUSH_FILE_SRC (obj); + + if (src->srcpad) { + gst_element_remove_pad (GST_ELEMENT (src), src->srcpad); + src->srcpad = NULL; + } + if (src->filesrc) { + gst_bin_remove (GST_BIN (src), src->filesrc); + src->filesrc = NULL; + } + + G_OBJECT_CLASS (parent_class)->dispose (obj); +} + +static void +gst_push_file_src_class_init (GstPushFileSrcClass * g_class) +{ + GObjectClass *gobject_class; + + gobject_class = G_OBJECT_CLASS (g_class); + + gobject_class->dispose = gst_push_file_src_dispose; +} + +static gboolean +gst_push_file_src_ghostpad_checkgetrange (GstPad * pad) +{ + return FALSE; +} + +static void +gst_push_file_src_init (GstPushFileSrc * src, GstPushFileSrcClass * g_class) +{ + src->filesrc = gst_element_factory_make ("filesrc", "real-filesrc"); + if (src->filesrc) { + GstPad *pad; + + gst_bin_add (GST_BIN (src), src->filesrc); + pad = gst_element_get_static_pad (src->filesrc, "src"); + g_assert (pad != NULL); + src->srcpad = gst_ghost_pad_new ("src", pad); + /* FIXME^H^HCORE: try pushfile:///foo/bar.ext ! typefind ! fakesink without + * this and watch core bugginess (some pad stays in flushing state) */ + gst_pad_set_checkgetrange_function (src->srcpad, + GST_DEBUG_FUNCPTR (gst_push_file_src_ghostpad_checkgetrange)); + gst_element_add_pad (GST_ELEMENT (src), src->srcpad); + gst_object_unref (pad); + } +} + +/*** GSTURIHANDLER INTERFACE *************************************************/ + +static GstURIType +gst_push_file_src_uri_get_type (void) +{ + return GST_URI_SRC; +} + +static gchar ** +gst_push_file_src_uri_get_protocols (void) +{ + static gchar *protocols[] = { "pushfile", NULL }; + + return protocols; +} + +static const gchar * +gst_push_file_src_uri_get_uri (GstURIHandler * handler) +{ + GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler); + + if (src->filesrc == NULL) + return NULL; + + return gst_uri_handler_get_uri (GST_URI_HANDLER (src->filesrc)); +} + +static gboolean +gst_push_file_src_uri_set_uri (GstURIHandler * handler, const gchar * uri) +{ + GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler); + + if (src->filesrc == NULL || !g_str_has_prefix (uri, "pushfile://")) + return FALSE; + + /* skip 'push' bit */ + return gst_uri_handler_set_uri (GST_URI_HANDLER (src->filesrc), uri + 4); +} + +static void +gst_push_file_src_uri_handler_init (gpointer g_iface, gpointer iface_data) +{ + GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface; + + iface->get_type = gst_push_file_src_uri_get_type; + iface->get_protocols = gst_push_file_src_uri_get_protocols; + iface->get_uri = gst_push_file_src_uri_get_uri; + iface->set_uri = gst_push_file_src_uri_set_uri; +} |