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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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plugins/elements/: Port to GstPoll. See #505417.
Original commit message from CVS: Patch by: Peter Kjellerstedt <pkj at axis dot com> * plugins/elements/gstfdsink.c: (gst_fd_sink_render), (gst_fd_sink_start), (gst_fd_sink_stop), (gst_fd_sink_unlock), (gst_fd_sink_unlock_stop), (gst_fd_sink_update_fd): * plugins/elements/gstfdsink.h: * plugins/elements/gstfdsrc.c: (gst_fd_src_update_fd), (gst_fd_src_start), (gst_fd_src_stop), (gst_fd_src_unlock), (gst_fd_src_unlock_stop), (gst_fd_src_create), (gst_fd_src_uri_set_uri): * plugins/elements/gstfdsrc.h: Port to GstPoll. See #505417.
This commit is contained in:
Peter Kjellerstedt
Wim Taymans
parent
91bf3deeb7
commit
a711d9f04f
5 changed files with 95 additions and 131 deletions
15
ChangeLog
15
ChangeLog
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@ -1,3 +1,18 @@
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2008-02-28 Wim Taymans <wim.taymans@collabora.co.uk>
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Patch by: Peter Kjellerstedt <pkj at axis dot com>
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* plugins/elements/gstfdsink.c: (gst_fd_sink_render),
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(gst_fd_sink_start), (gst_fd_sink_stop), (gst_fd_sink_unlock),
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(gst_fd_sink_unlock_stop), (gst_fd_sink_update_fd):
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* plugins/elements/gstfdsink.h:
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* plugins/elements/gstfdsrc.c: (gst_fd_src_update_fd),
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(gst_fd_src_start), (gst_fd_src_stop), (gst_fd_src_unlock),
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(gst_fd_src_unlock_stop), (gst_fd_src_create),
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(gst_fd_src_uri_set_uri):
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* plugins/elements/gstfdsrc.h:
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Port to GstPoll. See #505417.
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2008-02-27 Jan Schmidt <jan.schmidt@sun.com>
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* win32/common/libgstreamer.def:
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@ -56,30 +56,6 @@
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#include "gstfdsink.h"
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/* We add a control socket as in fdsrc to make it shutdown quickly when it's blocking on the fd.
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* Select is used to determine when the fd is ready for use. When the element state is changed,
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* it happens from another thread while fdsink is select'ing on the fd. The state-change thread
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* sends a control message, so fdsink wakes up and changes state immediately otherwise
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* it would stay blocked until it receives some data. */
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/* the select call is also performed on the control sockets, that way
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* we can send special commands to unblock the select call */
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#define CONTROL_STOP 'S' /* stop the select call */
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#define CONTROL_SOCKETS(sink) sink->control_sock
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#define WRITE_SOCKET(sink) sink->control_sock[1]
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#define READ_SOCKET(sink) sink->control_sock[0]
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#define SEND_COMMAND(sink, command) \
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G_STMT_START { \
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unsigned char c; c = command; \
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write (WRITE_SOCKET(sink), &c, 1); \
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} G_STMT_END
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#define READ_COMMAND(sink, command, res) \
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G_STMT_START { \
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res = read(READ_SOCKET(sink), &command, 1); \
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} G_STMT_END
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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@ -236,16 +212,14 @@ static GstFlowReturn
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gst_fd_sink_render (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstFdSink *fdsink;
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#ifndef HAVE_WIN32
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fd_set readfds;
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fd_set writefds;
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gint retval;
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#endif
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guint8 *data;
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guint size;
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gint written;
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#ifndef HAVE_WIN32
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gint retval;
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#endif
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fdsink = GST_FD_SINK (sink);
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g_return_val_if_fail (fdsink->fd >= 0, GST_FLOW_ERROR);
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@ -255,24 +229,18 @@ gst_fd_sink_render (GstBaseSink * sink, GstBuffer * buffer)
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again:
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#ifndef HAVE_WIN32
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FD_ZERO (&readfds);
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FD_SET (READ_SOCKET (fdsink), &readfds);
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FD_ZERO (&writefds);
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FD_SET (fdsink->fd, &writefds);
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do {
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GST_DEBUG_OBJECT (fdsink, "going into select, have %d bytes to write",
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size);
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retval = select (FD_SETSIZE, &readfds, &writefds, NULL, NULL);
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} while ((retval == -1 && errno == EINTR));
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retval = gst_poll_wait (fdsink->fdset, GST_CLOCK_TIME_NONE);
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} while (retval == -1 && errno == EINTR);
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if (retval == -1)
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goto select_error;
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if (FD_ISSET (READ_SOCKET (fdsink), &readfds))
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if (retval == -1) {
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if (errno == EBUSY)
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goto stopped;
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else
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goto select_error;
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}
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#endif
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GST_DEBUG_OBJECT (fdsink, "writing %d bytes to file descriptor %d", size,
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@ -381,20 +349,18 @@ static gboolean
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gst_fd_sink_start (GstBaseSink * basesink)
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{
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GstFdSink *fdsink;
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gint control_sock[2];
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GstPollFD fd;
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fdsink = GST_FD_SINK (basesink);
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if (!gst_fd_sink_check_fd (fdsink, fdsink->fd))
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return FALSE;
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if (socketpair (PF_UNIX, SOCK_STREAM, 0, control_sock) < 0)
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if ((fdsink->fdset = gst_poll_new (GST_POLL_MODE_AUTO, TRUE)) == NULL)
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goto socket_pair;
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READ_SOCKET (fdsink) = control_sock[0];
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WRITE_SOCKET (fdsink) = control_sock[1];
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fcntl (READ_SOCKET (fdsink), F_SETFL, O_NONBLOCK);
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fcntl (WRITE_SOCKET (fdsink), F_SETFL, O_NONBLOCK);
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fd.fd = fdsink->fd;
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gst_poll_add_fd (fdsink->fdset, &fd);
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gst_poll_fd_ctl_write (fdsink->fdset, &fd, TRUE);
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return TRUE;
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@ -412,8 +378,10 @@ gst_fd_sink_stop (GstBaseSink * basesink)
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{
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GstFdSink *fdsink = GST_FD_SINK (basesink);
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close (READ_SOCKET (fdsink));
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close (WRITE_SOCKET (fdsink));
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if (fdsink->fdset) {
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gst_poll_free (fdsink->fdset);
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fdsink->fdset = NULL;
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}
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return TRUE;
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}
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@ -423,8 +391,10 @@ gst_fd_sink_unlock (GstBaseSink * basesink)
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{
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GstFdSink *fdsink = GST_FD_SINK (basesink);
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GST_LOG_OBJECT (fdsink, "Sending unlock command to queue");
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SEND_COMMAND (fdsink, CONTROL_STOP);
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GST_LOG_OBJECT (fdsink, "Flushing");
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GST_OBJECT_LOCK (fdsink);
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gst_poll_set_flushing (fdsink->fdset, TRUE);
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GST_OBJECT_UNLOCK (fdsink);
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return TRUE;
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}
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@ -434,20 +404,10 @@ gst_fd_sink_unlock_stop (GstBaseSink * basesink)
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{
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GstFdSink *fdsink = GST_FD_SINK (basesink);
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/* read all stop commands */
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GST_LOG_OBJECT (fdsink, "Clearing unlock command queue");
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while (TRUE) {
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gchar command;
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int res;
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READ_COMMAND (fdsink, command, res);
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if (res < 0) {
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GST_LOG_OBJECT (fdsink, "no more commands");
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/* no more commands */
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break;
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}
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}
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GST_LOG_OBJECT (fdsink, "No longer flushing");
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GST_OBJECT_LOCK (fdsink);
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gst_poll_set_flushing (fdsink->fdset, FALSE);
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GST_OBJECT_UNLOCK (fdsink);
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return TRUE;
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}
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@ -463,9 +423,20 @@ gst_fd_sink_update_fd (GstFdSink * fdsink, int new_fd)
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/* assign the fd */
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GST_OBJECT_LOCK (fdsink);
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if (fdsink->fdset) {
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GstPollFD fd = { 0 };
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fd.fd = fdsink->fd;
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gst_poll_remove_fd (fdsink->fdset, &fd);
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fd.fd = new_fd;
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gst_poll_add_fd (fdsink->fdset, &fd);
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gst_poll_fd_ctl_write (fdsink->fdset, &fd, TRUE);
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}
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fdsink->fd = new_fd;
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g_free (fdsink->uri);
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fdsink->uri = g_strdup_printf ("fd://%d", fdsink->fd);
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GST_OBJECT_UNLOCK (fdsink);
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return TRUE;
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@ -54,7 +54,7 @@ struct _GstFdSink {
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gchar *uri;
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gint control_sock[2];
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GstPoll *fdset;
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int fd;
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guint64 bytes_written;
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@ -50,24 +50,6 @@
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#include "gstfdsrc.h"
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/* the select call is also performed on the control sockets, that way
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* we can send special commands to unblock the select call */
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#define CONTROL_STOP 'S' /* stop the select call */
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#define CONTROL_SOCKETS(src) src->control_sock
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#define WRITE_SOCKET(src) src->control_sock[1]
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#define READ_SOCKET(src) src->control_sock[0]
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#define SEND_COMMAND(src, command) \
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G_STMT_START { \
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unsigned char c; c = command; \
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write (WRITE_SOCKET(src), &c, 1); \
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} G_STMT_END
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#define READ_COMMAND(src, command, res) \
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G_STMT_START { \
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res = read(READ_SOCKET(src), &command, 1); \
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} G_STMT_END
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#define DEFAULT_BLOCKSIZE 4096
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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@ -193,6 +175,21 @@ gst_fd_src_update_fd (GstFdSrc * src)
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{
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struct stat stat_results;
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/* we need to always update the fdset since it may not have existed when
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* gst_fd_src_update_fd() was called earlier */
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if (src->fdset != NULL) {
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GstPollFD fd;
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if (src->fd >= 0) {
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fd.fd = src->fd;
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gst_poll_remove_fd (src->fdset, &fd);
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}
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fd.fd = src->new_fd;
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gst_poll_add_fd (src->fdset, &fd);
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gst_poll_fd_ctl_read (src->fdset, &fd, TRUE);
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}
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if (src->fd != src->new_fd) {
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GST_INFO_OBJECT (src, "Updating to fd %d", src->new_fd);
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@ -227,20 +224,13 @@ static gboolean
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gst_fd_src_start (GstBaseSrc * bsrc)
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{
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GstFdSrc *src = GST_FD_SRC (bsrc);
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gint control_sock[2];
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src->curoffset = 0;
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gst_fd_src_update_fd (src);
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if (socketpair (PF_UNIX, SOCK_STREAM, 0, control_sock) < 0)
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if ((src->fdset = gst_poll_new (GST_POLL_MODE_AUTO, TRUE)) == NULL)
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goto socket_pair;
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READ_SOCKET (src) = control_sock[0];
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WRITE_SOCKET (src) = control_sock[1];
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fcntl (READ_SOCKET (src), F_SETFL, O_NONBLOCK);
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fcntl (WRITE_SOCKET (src), F_SETFL, O_NONBLOCK);
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gst_fd_src_update_fd (src);
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return TRUE;
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@ -258,8 +248,10 @@ gst_fd_src_stop (GstBaseSrc * bsrc)
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{
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GstFdSrc *src = GST_FD_SRC (bsrc);
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close (READ_SOCKET (src));
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close (WRITE_SOCKET (src));
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if (src->fdset) {
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gst_poll_free (src->fdset);
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src->fdset = NULL;
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}
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return TRUE;
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}
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@ -269,8 +261,10 @@ gst_fd_src_unlock (GstBaseSrc * bsrc)
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{
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GstFdSrc *src = GST_FD_SRC (bsrc);
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GST_LOG_OBJECT (src, "sending unlock command");
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SEND_COMMAND (src, CONTROL_STOP);
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GST_LOG_OBJECT (src, "Flushing");
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GST_OBJECT_LOCK (src);
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gst_poll_set_flushing (src->fdset, TRUE);
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GST_OBJECT_UNLOCK (src);
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return TRUE;
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}
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@ -280,22 +274,10 @@ gst_fd_src_unlock_stop (GstBaseSrc * bsrc)
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{
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GstFdSrc *src = GST_FD_SRC (bsrc);
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GST_LOG_OBJECT (src, "clearing unlock command queue");
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/* read all stop commands */
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while (TRUE) {
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gchar command;
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int res;
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GST_LOG_OBJECT (src, "reading command");
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READ_COMMAND (src, command, res);
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if (res < 0) {
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GST_LOG_OBJECT (src, "no more commands");
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/* no more commands */
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break;
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}
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}
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GST_LOG_OBJECT (src, "No longer flushing");
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GST_OBJECT_LOCK (src);
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gst_poll_set_flushing (src->fdset, FALSE);
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GST_OBJECT_UNLOCK (src);
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return TRUE;
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}
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@ -352,26 +334,22 @@ gst_fd_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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guint blocksize;
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#ifndef HAVE_WIN32
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fd_set readfds;
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gint retval;
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#endif
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src = GST_FD_SRC (psrc);
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#ifndef HAVE_WIN32
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FD_ZERO (&readfds);
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FD_SET (src->fd, &readfds);
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FD_SET (READ_SOCKET (src), &readfds);
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do {
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retval = select (FD_SETSIZE, &readfds, NULL, NULL, NULL);
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} while ((retval == -1 && errno == EINTR));
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retval = gst_poll_wait (src->fdset, GST_CLOCK_TIME_NONE);
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} while (retval == -1 && errno == EINTR);
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if (retval == -1)
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goto select_error;
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if (FD_ISSET (READ_SOCKET (src), &readfds))
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if (retval == -1) {
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if (errno == EBUSY)
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goto stopped;
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else
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goto select_error;
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}
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#endif
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blocksize = GST_BASE_SRC (src)->blocksize;
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@ -530,7 +508,7 @@ gst_fd_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
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}
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g_free (protocol);
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if (sscanf (uri, "fd://%d", &fd) != 1)
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if (sscanf (uri, "fd://%d", &fd) != 1 || fd < 0)
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return FALSE;
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src->new_fd = fd;
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@ -64,7 +64,7 @@ struct _GstFdSrc {
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gchar *uri;
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gint control_sock[2];
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GstPoll *fdset;
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gulong curoffset; /* current offset in file */
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};
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