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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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720 lines
16 KiB
C
720 lines
16 KiB
C
/* GStreamer
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* Copyright (C) <2005> Edgard Lima <edgard.lima@indt.org.br>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstneonhttpsrc.h"
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#include <string.h>
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#include <unistd.h>
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#define HTTP_DEFAULT_HOST "localhost"
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#define HTTP_DEFAULT_PORT 80
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#define HTTPS_DEFAULT_PORT 443
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GST_DEBUG_CATEGORY (neonhttpsrc_debug);
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#define GST_CAT_DEFAULT neonhttpsrc_debug
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#define MAX_READ_SIZE (4 * 1024)
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static GstElementDetails gst_neonhttp_src_details =
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GST_ELEMENT_DETAILS ("NEON HTTP Client source",
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"Source/Network",
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"Receive data as a client over the network via HTTP",
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"Edgard Lima <edgard.lima@indt.org.br>");
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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enum
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{
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PROP_0,
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PROP_URI,
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PROP_PROXY
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};
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static void request_dispatch (void *data);
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static void oom_callback ();
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static int accept_response (void *userdata, ne_request * req,
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const ne_status * st);
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static void block_reader (void *userdata, const char *buf, size_t len);
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static void size_header_handler (void *userdata, const char *value);
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static gboolean set_proxy (const char *uri, ne_uri * parsed,
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gboolean set_default);
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static gboolean set_uri (const char *uri, ne_uri * parsed, gboolean * ishttps,
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gchar ** uristr, gboolean set_default);
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static void gst_neonhttp_src_finalize (GObject * gobject);
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static GstFlowReturn gst_neonhttp_src_create (GstPushSrc * psrc,
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GstBuffer ** outbuf);
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static gboolean gst_neonhttp_src_stop (GstBaseSrc * bsrc);
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static gboolean gst_neonhttp_src_start (GstBaseSrc * bsrc);
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static void gst_neonhttp_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_neonhttp_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void
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gst_neonhttp_src_uri_handler_init (gpointer g_iface, gpointer iface_data);
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static void
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_urihandler_init (GType type)
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{
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static const GInterfaceInfo urihandler_info = {
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gst_neonhttp_src_uri_handler_init,
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NULL,
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NULL
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};
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g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
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GST_DEBUG_CATEGORY_INIT (neonhttpsrc_debug, "neonhttpsrc", 0,
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"NEON HTTP src");
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}
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GST_BOILERPLATE_FULL (GstNeonhttpSrc, gst_neonhttp_src, GstPushSrc,
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GST_TYPE_PUSH_SRC, _urihandler_init);
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static void
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gst_neonhttp_src_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&srctemplate));
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gst_element_class_set_details (element_class, &gst_neonhttp_src_details);
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}
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static void
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gst_neonhttp_src_class_init (GstNeonhttpSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseSrcClass *gstbasesrc_class;
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GstPushSrcClass *gstpush_src_class;
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gobject_class = (GObjectClass *) klass;
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gstbasesrc_class = (GstBaseSrcClass *) klass;
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gstpush_src_class = (GstPushSrcClass *) klass;
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gobject_class->set_property = gst_neonhttp_src_set_property;
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gobject_class->get_property = gst_neonhttp_src_get_property;
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gobject_class->finalize = gst_neonhttp_src_finalize;
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g_object_class_install_property
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(G_OBJECT_CLASS (klass), PROP_URI,
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g_param_spec_string ("uri", "Uri",
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"The uri. In the form:"
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"\n\t\t\thttp://a.com/file.txt - default port '80' "
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"\n\t\t\thttp://a.com:80/file.txt "
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"\n\t\t\ta.com/file.txt - defualt scheme 'HTTP' "
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"\n\t\t\thttps://a.com/file.txt - default port '443' "
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"\n\t\t\thttp:///file.txt - default host '" HTTP_DEFAULT_HOST "'",
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"", G_PARAM_READWRITE));
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g_object_class_install_property
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(G_OBJECT_CLASS (klass), PROP_PROXY,
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g_param_spec_string ("proxy", "Proxy",
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"The proxy. In the form myproxy.mycompany.com:8080. "
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"\n\t\t\tIf nothing is passed g_getenv(\"http_proxy\") will be used "
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"\n\t\t\tIf that http_proxy enviroment var isn't define no proxy is used",
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"", G_PARAM_READWRITE));
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gstbasesrc_class->start = gst_neonhttp_src_start;
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gstbasesrc_class->stop = gst_neonhttp_src_stop;
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gstpush_src_class->create = gst_neonhttp_src_create;
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GST_DEBUG_CATEGORY_INIT (neonhttpsrc_debug, "neonhttpsrc", 0,
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"NEON HTTP Client Source");
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}
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static void
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gst_neonhttp_src_init (GstNeonhttpSrc * this, GstNeonhttpSrcClass * g_class)
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{
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this->session = NULL;
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this->request = NULL;
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memset (&this->uri, 0, sizeof (this->uri));
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this->uristr = NULL;
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memset (&this->proxy, 0, sizeof (this->proxy));
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this->ishttps = FALSE;
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this->content_size = 0;
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this->current_size = 0;
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set_uri (NULL, &this->uri, &this->ishttps, &this->uristr, TRUE);
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set_proxy (NULL, &this->proxy, TRUE);
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this->lock = g_mutex_new ();
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this->adapter = gst_adapter_new ();
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this->task = gst_task_create (request_dispatch, this);
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g_static_rec_mutex_init (&this->tasklock);
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gst_task_set_lock (this->task, &this->tasklock);
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gst_base_src_set_live (GST_BASE_SRC (this), TRUE);
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GST_OBJECT_FLAG_UNSET (this, GST_NEONHTTP_SRC_OPEN);
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}
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static void
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gst_neonhttp_src_finalize (GObject * gobject)
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{
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GstNeonhttpSrc *this = GST_NEONHTTP_SRC (gobject);
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ne_uri_free (&this->uri);
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ne_uri_free (&this->proxy);
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if (this->request) {
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ne_request_destroy (this->request);
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this->request = NULL;
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}
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if (this->session) {
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ne_close_connection (this->session);
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ne_session_destroy (this->session);
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this->session = NULL;
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}
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if (this->adapter) {
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g_object_unref (this->adapter);
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}
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if (this->lock) {
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g_mutex_free (this->lock);
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}
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gst_object_unref (this->task);
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g_static_rec_mutex_free (&this->tasklock);
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}
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static GstFlowReturn
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gst_neonhttp_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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{
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GstNeonhttpSrc *src;
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GstFlowReturn ret = GST_FLOW_OK;
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guint avail;
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src = GST_NEONHTTP_SRC (psrc);
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if (!GST_OBJECT_FLAG_IS_SET (src, GST_NEONHTTP_SRC_OPEN))
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goto wrong_state;
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GST_LOG_OBJECT (src, "asked for a buffer");
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while (1) {
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g_mutex_lock (src->lock);
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if ((avail = gst_adapter_available (src->adapter))) {
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g_mutex_unlock (src->lock);
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break;
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} else if (src->eos) {
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GstPad *peer;
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g_mutex_unlock (src->lock);
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*outbuf = NULL;
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GST_DEBUG ("Returning EOS");
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peer = gst_pad_get_peer (GST_BASE_SRC_PAD (src));
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if (!gst_pad_send_event (peer, gst_event_new_eos ())) {
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ret = GST_FLOW_ERROR;
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}
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gst_object_unref (peer);
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goto done;
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}
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g_mutex_unlock (src->lock);
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usleep (250000);
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}
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g_mutex_lock (src->lock);
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avail = gst_adapter_available (src->adapter);
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avail = avail > (4 * 1024) ? (4 * 1024) : avail;
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*outbuf = gst_buffer_new_and_alloc (avail);
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memcpy (GST_BUFFER_DATA (*outbuf), gst_adapter_peek (src->adapter, avail),
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avail);
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gst_adapter_flush (src->adapter, avail);
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g_mutex_unlock (src->lock);
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if (*outbuf) {
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gst_buffer_set_caps (*outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)));
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}
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done:
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return ret;
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wrong_state:
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{
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GST_DEBUG_OBJECT (src, "connection to closed, cannot read data");
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return GST_FLOW_WRONG_STATE;
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}
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}
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gboolean
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set_proxy (const char *uri, ne_uri * parsed, gboolean set_default)
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{
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ne_uri_free (parsed);
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if (set_default) {
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const char *str = g_getenv ("http_proxy");
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if (str) {
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if (0 != ne_uri_parse (str, parsed)) {
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g_warning ("The proxy set on http_proxy env var isn't well formated");
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ne_uri_free (parsed);
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}
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}
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return TRUE;
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}
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if (0 != ne_uri_parse (uri, parsed)) {
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goto clear;
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}
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if (parsed->scheme) {
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g_warning ("The proxy schema shouldn't be defined");
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}
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if (parsed->host && !parsed->port) {
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goto clear;
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}
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if (!parsed->path || parsed->authinfo) {
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goto clear;
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}
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return TRUE;
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clear:
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ne_uri_free (parsed);
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return FALSE;
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}
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gboolean
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set_uri (const char *uri, ne_uri * parsed, gboolean * ishttps, gchar ** uristr,
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gboolean set_default)
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{
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ne_uri_free (parsed);
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if (uristr && *uristr) {
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ne_free (*uristr);
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*uristr = NULL;
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}
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if (set_default) {
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parsed->scheme = g_strdup ("http");
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parsed->host = g_strdup (HTTP_DEFAULT_HOST);
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parsed->port = HTTP_DEFAULT_PORT;
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parsed->path = g_strdup ("/");
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*ishttps = FALSE;
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goto done;
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}
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if (0 != ne_uri_parse (uri, parsed)) {
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goto clear;
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}
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if (parsed->scheme == NULL) {
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parsed->scheme = g_strdup ("http");
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*ishttps = FALSE;
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} else {
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if (0 == strcmp (parsed->scheme, "https"))
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*ishttps = TRUE;
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else
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*ishttps = FALSE;
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}
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if (parsed->host == NULL) {
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parsed->host = g_strdup (HTTP_DEFAULT_HOST);
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}
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if (parsed->port == 0) {
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if (*ishttps)
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parsed->port = HTTPS_DEFAULT_PORT;
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else
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parsed->port = HTTP_DEFAULT_PORT;
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}
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if (!parsed->path) {
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parsed->path = g_strdup ("");
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} else {
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char *str = parsed->path;
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parsed->path = ne_path_escape (parsed->path);
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ne_free (str);
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}
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done:
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if (uristr) {
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*uristr = ne_uri_unparse (parsed);
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}
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return TRUE;
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clear:
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if (uristr && *uristr) {
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ne_free (*uristr);
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*uristr = NULL;
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}
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ne_uri_free (parsed);
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return FALSE;
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}
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static void
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gst_neonhttp_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstNeonhttpSrc *this = GST_NEONHTTP_SRC (object);
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switch (prop_id) {
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case PROP_PROXY:
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{
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if (!g_value_get_string (value)) {
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g_warning ("proxy property cannot be NULL");
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goto done;
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}
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if (!set_proxy (g_value_get_string (value), &this->proxy, FALSE)) {
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g_warning ("bad formated proxy");
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goto done;
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}
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}
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break;
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case PROP_URI:
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{
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if (!g_value_get_string (value)) {
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g_warning ("uri property cannot be NULL");
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goto done;
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}
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if (!set_uri (g_value_get_string (value), &this->uri, &this->ishttps,
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&this->uristr, FALSE)) {
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g_warning ("bad formated uri");
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goto done;
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}
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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done:
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return;
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}
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static void
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gst_neonhttp_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstNeonhttpSrc *neonhttpsrc = GST_NEONHTTP_SRC (object);
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switch (prop_id) {
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case PROP_PROXY:
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{
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char *str;
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if (neonhttpsrc->proxy.host) {
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str = ne_uri_unparse (&neonhttpsrc->proxy);
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if (!str)
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break;
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g_value_set_string (value, str);
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ne_free (str);
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} else {
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g_value_set_string (value, "");
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}
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}
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break;
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case PROP_URI:
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{
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char *str;
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if (neonhttpsrc->uri.host) {
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str = ne_uri_unparse (&neonhttpsrc->uri);
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if (!str)
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break;
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g_value_set_string (value, str);
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ne_free (str);
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} else {
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g_value_set_string (value, "");
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}
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/* create a socket for connecting to remote server */
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static gboolean
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gst_neonhttp_src_start (GstBaseSrc * bsrc)
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{
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gboolean ret = TRUE;
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GstNeonhttpSrc *src = GST_NEONHTTP_SRC (bsrc);
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ne_oom_callback (oom_callback);
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if (0 != ne_sock_init ()) {
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ret = FALSE;
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goto done;
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}
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src->session =
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ne_session_create (src->uri.scheme, src->uri.host, src->uri.port);
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if (src->proxy.host && src->proxy.port) {
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ne_session_proxy (src->session, src->proxy.host, src->proxy.port);
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} else if (src->proxy.host || src->proxy.port) {
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/* both proxy host and port must be specified or none */
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ret = FALSE;
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goto done;
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}
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src->request = ne_request_create (src->session, "GET", src->uri.path);
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ne_add_response_header_handler (src->request, "Content-Length",
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size_header_handler, src);
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ne_add_response_body_reader (src->request, accept_response, block_reader,
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src);
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if (NE_OK != ne_begin_request (src->request)) {
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ret = FALSE;
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goto done;
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}
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src->eos = FALSE;
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GST_OBJECT_FLAG_SET (src, GST_NEONHTTP_SRC_OPEN);
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gst_task_start (src->task);
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done:
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return ret;
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}
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/* close the socket and associated resources
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* unset OPEN flag
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* used both to recover from errors and go to NULL state */
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static gboolean
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gst_neonhttp_src_stop (GstBaseSrc * bsrc)
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{
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GstNeonhttpSrc *src;
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src = GST_NEONHTTP_SRC (bsrc);
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|
|
|
GST_OBJECT_FLAG_UNSET (src, GST_NEONHTTP_SRC_OPEN);
|
|
|
|
gst_task_stop (src->task);
|
|
gst_task_join (src->task);
|
|
|
|
if (src->request) {
|
|
ne_request_destroy (src->request);
|
|
src->request = NULL;
|
|
}
|
|
|
|
if (src->session) {
|
|
ne_close_connection (src->session);
|
|
ne_session_destroy (src->session);
|
|
src->session = NULL;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
request_dispatch (void *data)
|
|
{
|
|
|
|
int ret;
|
|
|
|
GstNeonhttpSrc *src;
|
|
|
|
src = GST_NEONHTTP_SRC (data);
|
|
|
|
/* Loop sending the request:
|
|
* Retry whilst authentication fails and we supply it. */
|
|
|
|
do {
|
|
ssize_t len;
|
|
|
|
do {
|
|
if (!GST_OBJECT_FLAG_IS_SET (src, GST_NEONHTTP_SRC_OPEN)) {
|
|
return;
|
|
}
|
|
len = ne_read_response_block (src->request,
|
|
src->respbuf, sizeof (src->respbuf));
|
|
} while (len > 0);
|
|
|
|
if (len < 0) {
|
|
ret = NE_ERROR;
|
|
break;
|
|
}
|
|
|
|
ret = ne_end_request (src->request);
|
|
|
|
} while (ret == NE_RETRY);
|
|
|
|
if (ret != NE_OK) {
|
|
GST_ERROR ("Request failed. code:%d, desc: %s\n", ret,
|
|
ne_get_error (src->session));
|
|
}
|
|
|
|
g_mutex_lock (src->lock);
|
|
src->eos = TRUE;
|
|
g_mutex_unlock (src->lock);
|
|
gst_task_stop (src->task);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
/* entry point to initialize the plug-in
|
|
* initialize the plug-in itself
|
|
* register the element factories and pad templates
|
|
* register the features
|
|
*/
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
return gst_element_register (plugin, "neonhttpsrc", GST_RANK_NONE,
|
|
GST_TYPE_NEONHTTP_SRC);
|
|
}
|
|
|
|
/* this is the structure that gst-register looks for
|
|
* so keep the name plugin_desc, or you cannot get your plug-in registered */
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"neon",
|
|
"lib neon http client src",
|
|
plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
|
|
|
|
|
|
/*** GSTURIHANDLER INTERFACE *************************************************/
|
|
static guint gst_neonhttp_src_uri_get_type (void)
|
|
{
|
|
return GST_URI_SRC;
|
|
}
|
|
static gchar **
|
|
gst_neonhttp_src_uri_get_protocols (void)
|
|
{
|
|
static gchar *protocols[] = { "http", "https", NULL };
|
|
|
|
return protocols;
|
|
}
|
|
|
|
static const gchar *
|
|
gst_neonhttp_src_uri_get_uri (GstURIHandler * handler)
|
|
{
|
|
GstNeonhttpSrc *src = GST_NEONHTTP_SRC (handler);
|
|
|
|
return src->uristr;
|
|
}
|
|
|
|
static gboolean
|
|
gst_neonhttp_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
|
|
{
|
|
GstNeonhttpSrc *src = GST_NEONHTTP_SRC (handler);
|
|
|
|
return set_uri (uri, &src->uri, &src->ishttps, &src->uristr, FALSE);
|
|
|
|
}
|
|
|
|
static void
|
|
gst_neonhttp_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
|
|
{
|
|
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
|
|
|
|
iface->get_type = gst_neonhttp_src_uri_get_type;
|
|
iface->get_protocols = gst_neonhttp_src_uri_get_protocols;
|
|
iface->get_uri = gst_neonhttp_src_uri_get_uri;
|
|
iface->set_uri = gst_neonhttp_src_uri_set_uri;
|
|
}
|
|
|
|
|
|
/* NEON CALLBACK */
|
|
|
|
static void
|
|
oom_callback ()
|
|
{
|
|
GST_ERROR ("memory exeception in neon\n");
|
|
}
|
|
|
|
static int
|
|
accept_response (void *userdata, ne_request * req, const ne_status * st)
|
|
{
|
|
GST_LOG ("ne_accept_response called code = %d phrase %s\n", st->code,
|
|
st->reason_phrase);
|
|
return ne_accept_2xx (userdata, req, st);
|
|
}
|
|
|
|
static void
|
|
block_reader (void *userdata, const char *buf, size_t len)
|
|
{
|
|
|
|
if (len) {
|
|
GstNeonhttpSrc *src = GST_NEONHTTP_SRC (userdata);
|
|
GstBuffer *buffer = gst_buffer_new_and_alloc (len);
|
|
|
|
memcpy (GST_BUFFER_DATA (buffer), buf, len);
|
|
|
|
g_mutex_lock (src->lock);
|
|
gst_adapter_push (src->adapter, buffer);
|
|
src->current_size += len;
|
|
g_mutex_unlock (src->lock);
|
|
|
|
}
|
|
}
|
|
|
|
void
|
|
size_header_handler (void *userdata, const char *value)
|
|
{
|
|
GstNeonhttpSrc *src = GST_NEONHTTP_SRC (userdata);
|
|
|
|
g_mutex_lock (src->lock);
|
|
src->content_size = atoi (value);
|
|
g_mutex_unlock (src->lock);
|
|
|
|
}
|