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sys/xvimage/xvimagesink.c: Protect interface methods from chain and negotiation and vice versa (Fixes #166142).

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Original commit message from CVS:
2005-02-11  Julien MOUTTE  <julien@moutte.net>

* sys/xvimage/xvimagesink.c: (gst_xvimagesink_xvimage_put),
(gst_xvimagesink_sink_link), (gst_xvimagesink_change_state),
(gst_xvimagesink_chain), (gst_xvimagesink_buffer_free),
(gst_xvimagesink_buffer_alloc), (gst_xvimagesink_set_xwindow_id),
(gst_xvimagesink_expose), (gst_xvimagesink_set_property),
(gst_xvimagesink_finalize), (gst_xvimagesink_init): Protect interface
methods from chain and negotiation and vice versa (Fixes #166142).
Fix a possible bug of images in the buffer pool being discarded because
we are looking at the wrong geometry.
* sys/xvimage/xvimagesink.h: Add stream_lock.
This commit is contained in:
Julien Moutte 2005-02-11 22:49:23 +00:00
parent d30486aa46
commit 415151afa4
3 changed files with 58 additions and 4 deletions
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13
ChangeLog
View file

@ -1,3 +1,16 @@
2005-02-11 Julien MOUTTE <julien@moutte.net>
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_xvimage_put),
(gst_xvimagesink_sink_link), (gst_xvimagesink_change_state),
(gst_xvimagesink_chain), (gst_xvimagesink_buffer_free),
(gst_xvimagesink_buffer_alloc), (gst_xvimagesink_set_xwindow_id),
(gst_xvimagesink_expose), (gst_xvimagesink_set_property),
(gst_xvimagesink_finalize), (gst_xvimagesink_init): Protect interface
methods from chain and negotiation and vice versa (Fixes #166142).
Fix a possible bug of images in the buffer pool being discarded because
we are looking at the wrong geometry.
* sys/xvimage/xvimagesink.h: Add stream_lock.
2005-02-11 David Schleef <ds@schleef.org>
* ext/mpeg2dec/gstmpeg2dec.c: (crop_buffer): Change uint to

48
sys/xvimage/xvimagesink.c
View file

@ -325,6 +325,7 @@ gst_xvimagesink_xvimage_put (GstXvImageSink * xvimagesink, GstXvImage * xvimage)
{
g_return_if_fail (xvimage != NULL);
g_return_if_fail (GST_IS_XVIMAGESINK (xvimagesink));
g_return_if_fail (xvimagesink->xwindow != NULL);
/* Store a reference to the last image we put */
if (xvimagesink->cur_image != xvimage)
@ -1214,6 +1215,8 @@ gst_xvimagesink_sink_link (GstPad * pad, const GstCaps * caps)
if (!ret)
return GST_PAD_LINK_REFUSED;
g_mutex_lock (xvimagesink->stream_lock);
xvimagesink->video_width = video_width;
xvimagesink->video_height = video_height;
if (!gst_structure_get_fourcc (structure, "format", &im_format)) {
@ -1222,6 +1225,7 @@ gst_xvimagesink_sink_link (GstPad * pad, const GstCaps * caps)
gst_caps_copy (caps));
}
if (im_format == 0) {
g_mutex_unlock (xvimagesink->stream_lock);
return GST_PAD_LINK_REFUSED;
}
@ -1311,6 +1315,8 @@ gst_xvimagesink_sink_link (GstPad * pad, const GstCaps * caps)
xvimagesink->xcontext->im_format = im_format;
g_mutex_unlock (xvimagesink->stream_lock);
gst_x_overlay_got_desired_size (GST_X_OVERLAY (xvimagesink),
GST_VIDEOSINK_WIDTH (xvimagesink), GST_VIDEOSINK_HEIGHT (xvimagesink));
@ -1339,7 +1345,9 @@ gst_xvimagesink_change_state (GstElement * element)
/* call XSynchronize with the current value of synchronous */
GST_DEBUG_OBJECT (xvimagesink, "XSynchronize called with %s",
xvimagesink->synchronous ? "TRUE" : "FALSE");
g_mutex_lock (xvimagesink->x_lock);
XSynchronize (xvimagesink->xcontext->disp, xvimagesink->synchronous);
g_mutex_unlock (xvimagesink->x_lock);
gst_xvimagesink_update_colorbalance (xvimagesink);
break;
case GST_STATE_READY_TO_PAUSED:
@ -1350,13 +1358,19 @@ gst_xvimagesink_change_state (GstElement * element)
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
g_mutex_lock (xvimagesink->stream_lock);
if (xvimagesink->xwindow)
gst_xvimagesink_xwindow_clear (xvimagesink, xvimagesink->xwindow);
xvimagesink->framerate = 0;
GST_VIDEOSINK_WIDTH (xvimagesink) = 0;
GST_VIDEOSINK_HEIGHT (xvimagesink) = 0;
g_mutex_unlock (xvimagesink->stream_lock);
break;
case GST_STATE_READY_TO_NULL:
/* We are cleaning our resources here, yes i know chain is not running
but the interface can be called to set a window from a different thread
and that would crash */
g_mutex_lock (xvimagesink->stream_lock);
if (xvimagesink->xvimage) {
gst_xvimagesink_xvimage_destroy (xvimagesink, xvimagesink->xvimage);
xvimagesink->xvimage = NULL;
@ -1374,6 +1388,7 @@ gst_xvimagesink_change_state (GstElement * element)
gst_xvimagesink_xcontext_clear (xvimagesink);
xvimagesink->xcontext = NULL;
}
g_mutex_unlock (xvimagesink->stream_lock);
break;
}
@ -1399,6 +1414,8 @@ gst_xvimagesink_chain (GstPad * pad, GstData * data)
return;
}
g_mutex_lock (xvimagesink->stream_lock);
buf = GST_BUFFER (data);
/* update time */
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
@ -1427,6 +1444,7 @@ gst_xvimagesink_chain (GstPad * pad, GstData * data)
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (xvimagesink, CORE, NEGOTIATION, (NULL),
("Failed creating an XvImage in xvimagesink chain function."));
g_mutex_unlock (xvimagesink->stream_lock);
return;
}
}
@ -1445,6 +1463,8 @@ gst_xvimagesink_chain (GstPad * pad, GstData * data)
gst_buffer_unref (buf);
gst_xvimagesink_handle_xevents (xvimagesink, pad);
g_mutex_unlock (xvimagesink->stream_lock);
}
/* Buffer management */
@ -1461,8 +1481,8 @@ gst_xvimagesink_buffer_free (GstBuffer * buffer)
xvimagesink = xvimage->xvimagesink;
/* If our geometry changed we can't reuse that image. */
if ((xvimage->width != GST_VIDEOSINK_WIDTH (xvimagesink)) ||
(xvimage->height != GST_VIDEOSINK_HEIGHT (xvimagesink)))
if ((xvimage->width != xvimagesink->video_width) ||
(xvimage->height != xvimagesink->video_height))
gst_xvimagesink_xvimage_destroy (xvimagesink, xvimage);
else {
/* In that case we can reuse the image and add it to our image pool. */
@ -1496,8 +1516,8 @@ gst_xvimagesink_buffer_alloc (GstPad * pad, guint64 offset, guint size)
xvimagesink->image_pool);
/* We check for geometry or image format changes */
if ((xvimage->width != GST_VIDEOSINK_WIDTH (xvimagesink)) ||
(xvimage->height != GST_VIDEOSINK_HEIGHT (xvimagesink)) ||
if ((xvimage->width != xvimagesink->video_width) ||
(xvimage->height != xvimagesink->video_height) ||
(xvimage->im_format != xvimagesink->xcontext->im_format)) {
/* This image is unusable. Destroying... */
gst_xvimagesink_xvimage_destroy (xvimagesink, xvimage);
@ -1605,6 +1625,11 @@ gst_xvimagesink_set_xwindow_id (GstXOverlay * overlay, XID xwindow_id)
gst_xvimagesink_update_colorbalance (xvimagesink);
/* We acquire the stream lock while setting this window in the element.
We are basically cleaning tons of stuff replacing the old window, putting
images while we do that would surely crash */
g_mutex_lock (xvimagesink->stream_lock);
/* Clear image pool as the images are unusable anyway */
gst_xvimagesink_imagepool_clear (xvimagesink);
@ -1652,6 +1677,8 @@ gst_xvimagesink_set_xwindow_id (GstXOverlay * overlay, XID xwindow_id)
if (xwindow)
xvimagesink->xwindow = xwindow;
g_mutex_unlock (xvimagesink->stream_lock);
}
static void
@ -1673,6 +1700,10 @@ gst_xvimagesink_expose (GstXOverlay * overlay)
if (!xvimagesink->xwindow)
return;
/* We don't want chain to iterate while we do that. We might act on random
cur_image and different geometry */
g_mutex_lock (xvimagesink->stream_lock);
/* Update the window geometry */
g_mutex_lock (xvimagesink->x_lock);
XGetWindowAttributes (xvimagesink->xcontext->disp,
@ -1685,6 +1716,8 @@ gst_xvimagesink_expose (GstXOverlay * overlay)
if (xvimagesink->cur_image) {
gst_xvimagesink_xvimage_put (xvimagesink, xvimagesink->cur_image);
}
g_mutex_unlock (xvimagesink->stream_lock);
}
static void
@ -1820,9 +1853,11 @@ gst_xvimagesink_set_property (GObject * object, guint prop_id,
case ARG_SYNCHRONOUS:
xvimagesink->synchronous = g_value_get_boolean (value);
if (xvimagesink->xcontext) {
g_mutex_lock (xvimagesink->x_lock);
XSynchronize (xvimagesink->xcontext->disp, xvimagesink->synchronous);
GST_DEBUG_OBJECT (xvimagesink, "XSynchronize called with %s",
xvimagesink->synchronous ? "TRUE" : "FALSE");
g_mutex_unlock (xvimagesink->x_lock);
}
break;
case ARG_PIXEL_ASPECT_RATIO:
@ -1905,6 +1940,10 @@ gst_xvimagesink_finalize (GObject * object)
g_mutex_free (xvimagesink->x_lock);
xvimagesink->x_lock = NULL;
}
if (xvimagesink->stream_lock) {
g_mutex_free (xvimagesink->stream_lock);
xvimagesink->stream_lock = NULL;
}
if (xvimagesink->pool_lock) {
g_mutex_free (xvimagesink->pool_lock);
xvimagesink->pool_lock = NULL;
@ -1949,6 +1988,7 @@ gst_xvimagesink_init (GstXvImageSink * xvimagesink)
xvimagesink->video_height = 0;
xvimagesink->x_lock = g_mutex_new ();
xvimagesink->stream_lock = g_mutex_new ();
xvimagesink->image_pool = NULL;
xvimagesink->pool_lock = g_mutex_new ();

1
sys/xvimage/xvimagesink.h
View file

@ -142,6 +142,7 @@ struct _GstXvImageSink {
gboolean cb_changed;
GMutex *x_lock;
GMutex *stream_lock;
guint video_width, video_height; /* size of incoming video;
* used as the size for XvImage */