# include "config.h"
#endif
-#include "gstfdsink.h"
+#include "../../gst/gst-i18n-lib.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <fcntl.h>
+#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
+#ifdef _MSC_VER
+#include <io.h>
+#endif
+#include <errno.h>
+#include <string.h>
+
+#include "gstfdsink.h"
+
+/* We add a control socket as in fdsrc to make it shutdown quickly when it's blocking on the fd.
+ * Select is used to determine when the fd is ready for use. When the element state is changed,
+ * it happens from another thread while fdsink is select'ing on the fd. The state-change thread
+ * sends a control message, so fdsink wakes up and changes state immediately otherwise
+ * it would stay blocked until it receives some data. */
+
+/* the select call is also performed on the control sockets, that way
+ * we can send special commands to unblock the select call */
+#define CONTROL_STOP 'S' /* stop the select call */
+#define CONTROL_SOCKETS(sink) sink->control_sock
+#define WRITE_SOCKET(sink) sink->control_sock[1]
+#define READ_SOCKET(sink) sink->control_sock[0]
+
+#define SEND_COMMAND(sink, command) \
+G_STMT_START { \
+ unsigned char c; c = command; \
+ write (WRITE_SOCKET(sink), &c, 1); \
+} G_STMT_END
+
+#define READ_COMMAND(sink, command, res) \
+G_STMT_START { \
+ res = read(READ_SOCKET(sink), &command, 1); \
+} G_STMT_END
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
ARG_FD
};
+static void gst_fd_sink_uri_handler_init (gpointer g_iface,
+ gpointer iface_data);
-#define _do_init(bla) \
- GST_DEBUG_CATEGORY_INIT (gst_fd_sink__debug, "fdsink", 0, "fdsink element");
+static void
+_do_init (GType gst_fd_sink_type)
+{
+ static const GInterfaceInfo urihandler_info = {
+ gst_fd_sink_uri_handler_init,
+ NULL,
+ NULL
+ };
+
+ g_type_add_interface_static (gst_fd_sink_type, GST_TYPE_URI_HANDLER,
+ &urihandler_info);
-GST_BOILERPLATE_FULL (GstFdSink, gst_fd_sink_, GstElement, GST_TYPE_ELEMENT,
+ GST_DEBUG_CATEGORY_INIT (gst_fd_sink__debug, "fdsink", 0, "fdsink element");
+}
+
+GST_BOILERPLATE_FULL (GstFdSink, gst_fd_sink, GstBaseSink, GST_TYPE_BASE_SINK,
_do_init);
-static void gst_fd_sink__set_property (GObject * object, guint prop_id,
+static void gst_fd_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_fd_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
+static void gst_fd_sink_dispose (GObject * obj);
-static void gst_fd_sink__chain (GstPad * pad, GstData * _data);
-
+static gboolean gst_fd_sink_query (GstPad * pad, GstQuery * query);
+static GstFlowReturn gst_fd_sink_render (GstBaseSink * sink,
+ GstBuffer * buffer);
+static gboolean gst_fd_sink_start (GstBaseSink * basesink);
+static gboolean gst_fd_sink_stop (GstBaseSink * basesink);
+static gboolean gst_fd_sink_unlock (GstBaseSink * basesink);
static void
-gst_fd_sink__base_init (gpointer g_class)
+gst_fd_sink_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_static_pad_template_get (&sinktemplate));
gst_element_class_set_details (gstelement_class, &gst_fd_sink__details);
}
+
static void
-gst_fd_sink__class_init (GstFdSinkClass * klass)
+gst_fd_sink_class_init (GstFdSinkClass * klass)
{
GObjectClass *gobject_class;
+ GstBaseSinkClass *gstbasesink_class;
gobject_class = G_OBJECT_CLASS (klass);
+ gstbasesink_class = GST_BASE_SINK_CLASS (klass);
- gobject_class->set_property = gst_fd_sink__set_property;
+ gobject_class->set_property = gst_fd_sink_set_property;
gobject_class->get_property = gst_fd_sink_get_property;
+ gobject_class->dispose = gst_fd_sink_dispose;
+
+ gstbasesink_class->get_times = NULL;
+ gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_fd_sink_render);
+ gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_fd_sink_start);
+ gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_fd_sink_stop);
+ gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_fd_sink_unlock);
+ gstbasesink_class->event = NULL;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FD,
g_param_spec_int ("fd", "fd", "An open file descriptor to write to",
}
static void
-gst_fd_sink__init (GstFdSink * fdsink)
+gst_fd_sink_init (GstFdSink * fdsink, GstFdSinkClass * klass)
{
- fdsink->sinkpad =
- gst_pad_new_from_template (gst_static_pad_template_get (&sinktemplate),
- "sink");
- gst_element_add_pad (GST_ELEMENT (fdsink), fdsink->sinkpad);
- gst_pad_set_chain_function (fdsink->sinkpad, gst_fd_sink__chain);
+ GstPad *pad;
+
+ pad = GST_BASE_SINK_PAD (fdsink);
+ gst_pad_set_query_function (pad, GST_DEBUG_FUNCPTR (gst_fd_sink_query));
fdsink->fd = 1;
+ fdsink->uri = g_strdup_printf ("fd://%d", fdsink->fd);
+ fdsink->bytes_written = 0;
+
+ GST_BASE_SINK (fdsink)->sync = TRUE;
}
static void
-gst_fd_sink__chain (GstPad * pad, GstData * _data)
+gst_fd_sink_dispose (GObject * obj)
+{
+ GstFdSink *fdsink = GST_FD_SINK (obj);
+
+ g_free (fdsink->uri);
+ fdsink->uri = NULL;
+
+ G_OBJECT_CLASS (parent_class)->dispose (obj);
+}
+
+static gboolean
+gst_fd_sink_query (GstPad * pad, GstQuery * query)
+{
+ GstFdSink *fdsink;
+ GstFormat format;
+
+ fdsink = GST_FD_SINK (GST_PAD_PARENT (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_POSITION:
+ gst_query_parse_position (query, &format, NULL);
+ switch (format) {
+ case GST_FORMAT_DEFAULT:
+ case GST_FORMAT_BYTES:
+ gst_query_set_position (query, GST_FORMAT_BYTES,
+ fdsink->bytes_written);
+ return TRUE;
+ default:
+ return FALSE;
+ }
+
+ case GST_QUERY_FORMATS:
+ gst_query_set_formats (query, 2, GST_FORMAT_DEFAULT, GST_FORMAT_BYTES);
+ return TRUE;
+
+ default:
+ return gst_pad_query_default (pad, query);
+ }
+}
+
+static GstFlowReturn
+gst_fd_sink_render (GstBaseSink * sink, GstBuffer * buffer)
+{
+ GstFdSink *fdsink;
+
+#ifndef HAVE_WIN32
+ fd_set readfds;
+ fd_set writefds;
+ gint retval;
+#endif
+
+ fdsink = GST_FD_SINK (sink);
+
+ g_return_val_if_fail (fdsink->fd >= 0, GST_FLOW_ERROR);
+
+#ifndef HAVE_WIN32
+ FD_ZERO (&readfds);
+ FD_SET (READ_SOCKET (fdsink), &readfds);
+
+ FD_ZERO (&writefds);
+ FD_SET (fdsink->fd, &writefds);
+
+ do {
+ retval = select (FD_SETSIZE, &readfds, &writefds, NULL, NULL);
+ } while ((retval == -1 && errno == EINTR));
+
+ if (retval == -1)
+ goto select_error;
+
+ if (FD_ISSET (READ_SOCKET (fdsink), &readfds)) {
+ /* read all stop commands */
+ while (TRUE) {
+ gchar command;
+ int res;
+
+ READ_COMMAND (fdsink, command, res);
+ if (res < 0) {
+ GST_LOG_OBJECT (fdsink, "no more commands");
+ /* no more commands */
+ break;
+ }
+ }
+ goto stopped;
+ }
+#endif
+
+ if (GST_BUFFER_DATA (buffer)) {
+ guint bytes_written;
+
+ GST_DEBUG ("writing %d bytes to file descriptor %d",
+ GST_BUFFER_SIZE (buffer), fdsink->fd);
+ bytes_written =
+ write (fdsink->fd, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
+ fdsink->bytes_written += bytes_written;
+ if (bytes_written != GST_BUFFER_SIZE (buffer)) {
+ GST_ELEMENT_ERROR (fdsink, RESOURCE, WRITE,
+ (_("Error while writing to file descriptor \"%d\"."), fdsink->fd),
+ ("%s", g_strerror (errno)));
+ return GST_FLOW_ERROR;
+ }
+ }
+
+ return GST_FLOW_OK;
+
+#ifndef HAVE_WIN32
+select_error:
+ {
+ GST_ELEMENT_ERROR (fdsink, RESOURCE, READ, (NULL),
+ ("select on file descriptor: %s.", g_strerror (errno)));
+ GST_DEBUG_OBJECT (fdsink, "Error during select");
+ return GST_FLOW_ERROR;
+ }
+stopped:
+ {
+ GST_DEBUG_OBJECT (fdsink, "Select stopped");
+ return GST_FLOW_WRONG_STATE;
+ }
+#endif
+}
+
+static gboolean
+gst_fd_sink_check_fd (GstFdSink * fdsink, int fd)
+{
+ struct stat stat_results;
+ off_t result;
+
+ /* see that it is a valid file descriptor */
+ if (fstat (fd, &stat_results) < 0)
+ goto invalid;
+
+ if (!S_ISREG (stat_results.st_mode))
+ goto not_seekable;
+
+ /* see if it is a seekable stream */
+ result = lseek (fd, 0, SEEK_CUR);
+ if (result == -1) {
+ switch (errno) {
+ case EINVAL:
+ case EBADF:
+ goto invalid;
+
+ case ESPIPE:
+ goto not_seekable;
+ }
+ } else
+ GST_DEBUG ("File descriptor \"%d\" is seekable", fd);
+
+ return TRUE;
+
+invalid:
+ GST_ELEMENT_ERROR (fdsink, RESOURCE, WRITE,
+ (_("File descriptor \"%d\" is not valid."), fd),
+ ("%s", g_strerror (errno)));
+ return FALSE;
+
+not_seekable:
+ GST_DEBUG ("File descriptor \"%d\" is a pipe", fd);
+ return TRUE;
+}
+
+static gboolean
+gst_fd_sink_start (GstBaseSink * basesink)
{
- GstBuffer *buf = GST_BUFFER (_data);
GstFdSink *fdsink;
+ gint control_sock[2];
+
+ fdsink = GST_FD_SINK (basesink);
+ if (!gst_fd_sink_check_fd (fdsink, fdsink->fd))
+ return FALSE;
+
+ if (socketpair (PF_UNIX, SOCK_STREAM, 0, control_sock) < 0)
+ goto socket_pair;
+
+ READ_SOCKET (fdsink) = control_sock[0];
+ WRITE_SOCKET (fdsink) = control_sock[1];
+
+ fcntl (READ_SOCKET (fdsink), F_SETFL, O_NONBLOCK);
+ fcntl (WRITE_SOCKET (fdsink), F_SETFL, O_NONBLOCK);
+
+ return TRUE;
+
+ /* ERRORS */
+socket_pair:
+ {
+ GST_ELEMENT_ERROR (fdsink, RESOURCE, OPEN_READ_WRITE, (NULL),
+ GST_ERROR_SYSTEM);
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_fd_sink_stop (GstBaseSink * basesink)
+{
+ GstFdSink *fdsink = GST_FD_SINK (basesink);
+
+ close (READ_SOCKET (fdsink));
+ close (WRITE_SOCKET (fdsink));
+
+ return TRUE;
+}
+
+static gboolean
+gst_fd_sink_unlock (GstBaseSink * basesink)
+{
+ GstFdSink *fdsink = GST_FD_SINK (basesink);
- g_return_if_fail (pad != NULL);
- g_return_if_fail (GST_IS_PAD (pad));
- g_return_if_fail (buf != NULL);
+ SEND_COMMAND (fdsink, CONTROL_STOP);
- fdsink = GST_FD_SINK (gst_pad_get_parent (pad));
+ return TRUE;
+}
+
+static gboolean
+gst_fd_sink_update_fd (GstFdSink * fdsink, int new_fd)
+{
+ if (new_fd < 0)
+ return FALSE;
- g_return_if_fail (fdsink->fd >= 0);
+ GST_OBJECT_LOCK (fdsink);
- if (GST_BUFFER_DATA (buf)) {
- GST_DEBUG ("writing %d bytes to file descriptor %d", GST_BUFFER_SIZE (buf),
- fdsink->fd);
- write (fdsink->fd, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
+ if (!gst_fd_sink_check_fd (fdsink, new_fd)) {
+ GST_OBJECT_UNLOCK (fdsink);
+ return FALSE;
}
- gst_buffer_unref (buf);
+ fdsink->fd = new_fd;
+ g_free (fdsink->uri);
+ fdsink->uri = g_strdup_printf ("fd://%d", fdsink->fd);
+
+ GST_OBJECT_UNLOCK (fdsink);
+ return TRUE;
}
static void
-gst_fd_sink__set_property (GObject * object, guint prop_id,
+gst_fd_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFdSink *fdsink;
fdsink = GST_FD_SINK (object);
switch (prop_id) {
- case ARG_FD:
- fdsink->fd = g_value_get_int (value);
+ case ARG_FD:{
+ int fd;
+
+ fd = g_value_get_int (value);
+ gst_fd_sink_update_fd (fdsink, fd);
break;
+ }
default:
break;
}
break;
}
}
+
+/*** GSTURIHANDLER INTERFACE *************************************************/
+
+static guint
+gst_fd_sink_uri_get_type (void)
+{
+ return GST_URI_SINK;
+}
+static gchar **
+gst_fd_sink_uri_get_protocols (void)
+{
+ static gchar *protocols[] = { "fd", NULL };
+
+ return protocols;
+}
+static const gchar *
+gst_fd_sink_uri_get_uri (GstURIHandler * handler)
+{
+ GstFdSink *sink = GST_FD_SINK (handler);
+
+ return sink->uri;
+}
+
+static gboolean
+gst_fd_sink_uri_set_uri (GstURIHandler * handler, const gchar * uri)
+{
+ gchar *protocol;
+ GstFdSink *sink = GST_FD_SINK (handler);
+ gint fd;
+
+ protocol = gst_uri_get_protocol (uri);
+ if (strcmp (protocol, "fd") != 0) {
+ g_free (protocol);
+ return FALSE;
+ }
+ g_free (protocol);
+
+ if (sscanf (uri, "fd://%d", &fd) != 1)
+ return FALSE;
+
+ return gst_fd_sink_update_fd (sink, fd);
+}
+
+static void
+gst_fd_sink_uri_handler_init (gpointer g_iface, gpointer iface_data)
+{
+ GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
+
+ iface->get_type = gst_fd_sink_uri_get_type;
+ iface->get_protocols = gst_fd_sink_uri_get_protocols;
+ iface->get_uri = gst_fd_sink_uri_get_uri;
+ iface->set_uri = gst_fd_sink_uri_set_uri;
+}
projects / platform / upstream / gstreamer.git / commitdiff