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basetransform: fix refcounting problem

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Add some more debug info.
Make sure that the output buffer has writable metadata before we attempt to set
caps on it.

fixes #583999
This commit is contained in:
Wim Taymans 2009-08-05 13:44:51 +02:00
parent 950c70c8bb
commit 6cf64beb79
1 changed files with 41 additions and 17 deletions
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58
libs/gst/base/gstbasetransform.c
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@ -1082,7 +1082,7 @@ gst_base_transform_setcaps (GstPad * pad, GstCaps * caps)
if (GST_PAD_IS_IN_SETCAPS (otherpad))
goto done;
GST_DEBUG_OBJECT (pad, "have new caps %" GST_PTR_FORMAT, caps);
GST_DEBUG_OBJECT (pad, "have new caps %p %" GST_PTR_FORMAT, caps, caps);
/* find best possible caps for the other pad */
othercaps = gst_base_transform_find_transform (trans, pad, caps);
@ -1218,7 +1218,8 @@ gst_base_transform_prepare_output_buffer (GstBaseTransform * trans,
if (bclass->prepare_output_buffer) {
GST_DEBUG_OBJECT (trans,
"calling prepare buffer with caps %" GST_PTR_FORMAT, oldcaps);
"calling prepare buffer with caps %p %" GST_PTR_FORMAT, oldcaps,
oldcaps);
ret =
bclass->prepare_output_buffer (trans, in_buf, outsize, oldcaps,
out_buf);
@ -1341,17 +1342,23 @@ gst_base_transform_prepare_output_buffer (GstBaseTransform * trans,
}
}
/* try to make a final output buffer, make sure the metadata is writable */
if (*out_buf == NULL) {
if (!discard) {
GST_DEBUG_OBJECT (trans, "make default output buffer of size %d",
outsize);
/* no valid buffer yet, make one */
/* no valid buffer yet, make one, metadata is writable */
*out_buf = gst_buffer_new_and_alloc (outsize);
gst_buffer_copy_metadata (*out_buf, in_buf,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
} else {
GST_DEBUG_OBJECT (trans, "reuse input buffer");
*out_buf = in_buf;
/* we can reuse the input buffer if it's writable else we take a
* subbuffer. Note that we can't unref in_buf. */
if (gst_buffer_is_metadata_writable (in_buf))
*out_buf = in_buf;
else
*out_buf = gst_buffer_create_sub (in_buf, 0, GST_BUFFER_SIZE (in_buf));
}
} else {
if (trans->passthrough && in_buf != *out_buf) {
@ -1364,13 +1371,29 @@ gst_base_transform_prepare_output_buffer (GstBaseTransform * trans,
if (discard) {
GST_DEBUG_OBJECT (trans, "discard buffer, reuse input buffer");
gst_buffer_unref (*out_buf);
*out_buf = in_buf;
/* we can reuse the input buffer if it's writable else we take a
* subbuffer. Note that we can't unref in_buf. */
if (gst_buffer_is_metadata_writable (in_buf))
*out_buf = in_buf;
else
*out_buf = gst_buffer_create_sub (in_buf, 0, GST_BUFFER_SIZE (in_buf));
} else {
GST_DEBUG_OBJECT (trans, "using allocated buffer");
GST_DEBUG_OBJECT (trans, "using allocated buffer in %p, out %p", in_buf,
*out_buf);
/* we need a metadata writable output buffer. Note that we can't unref
* in_buf. */
if (!gst_buffer_is_metadata_writable (*out_buf)) {
if (in_buf == *out_buf)
*out_buf =
gst_buffer_create_sub (in_buf, 0, GST_BUFFER_SIZE (in_buf));
else
*out_buf = gst_buffer_make_metadata_writable (*out_buf);
}
gst_buffer_copy_metadata (*out_buf, in_buf,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
}
}
/* when we get here, the metadata should be writable */
gst_buffer_set_caps (*out_buf, GST_PAD_CAPS (trans->srcpad));
/* clear the GAP flag when the subclass does not understand it
@ -1480,8 +1503,8 @@ gst_base_transform_buffer_alloc (GstPad * pad, guint64 offset, guint size,
trans = GST_BASE_TRANSFORM (gst_pad_get_parent (pad));
priv = trans->priv;
GST_DEBUG_OBJECT (pad, "alloc with caps %" GST_PTR_FORMAT ", size %u", caps,
size);
GST_DEBUG_OBJECT (pad, "alloc with caps %p %" GST_PTR_FORMAT ", size %u",
caps, caps, size);
/* if the code below does not come up with a better buffer, we will return _OK
* and an empty buffer. This will trigger the core to allocate a buffer with
@ -1498,7 +1521,7 @@ gst_base_transform_buffer_alloc (GstPad * pad, guint64 offset, guint size,
if (same_caps) {
/* we have seen this before, see below if we need to proxy */
GST_DEBUG_OBJECT (trans, "have old caps");
GST_DEBUG_OBJECT (trans, "have old caps %p, size %u", caps, size);
sink_suggest = caps;
size_suggest = size;
suggest = FALSE;
@ -1507,20 +1530,21 @@ gst_base_transform_buffer_alloc (GstPad * pad, guint64 offset, guint size,
const GstCaps *templ;
gboolean empty;
GST_DEBUG_OBJECT (trans, "new format %" GST_PTR_FORMAT, caps);
GST_DEBUG_OBJECT (trans, "new format %p %" GST_PTR_FORMAT, caps, caps);
/* if we have a suggestion, pretend we got these as input */
GST_OBJECT_LOCK (pad);
if ((priv->sink_suggest && !gst_caps_is_equal (caps, priv->sink_suggest))) {
sink_suggest = gst_caps_ref (priv->sink_suggest);
size_suggest = priv->size_suggest;
GST_DEBUG_OBJECT (trans, "have suggestion %" GST_PTR_FORMAT,
sink_suggest);
GST_DEBUG_OBJECT (trans, "have suggestion %p %" GST_PTR_FORMAT " size %u",
sink_suggest, sink_suggest, priv->size_suggest);
/* suggest is TRUE when we have a custom suggestion pending that we need
* to unref later. */
suggest = TRUE;
} else {
GST_DEBUG_OBJECT (trans, "using caps %" GST_PTR_FORMAT, caps);
GST_DEBUG_OBJECT (trans, "using caps %p %" GST_PTR_FORMAT " size %u",
caps, caps, size);
sink_suggest = caps;
size_suggest = size;
suggest = FALSE;
@ -1584,8 +1608,8 @@ gst_base_transform_buffer_alloc (GstPad * pad, guint64 offset, guint size,
if (proxy && !suggest) {
GstCaps *newcaps;
GST_DEBUG_OBJECT (trans, "proxy buffer-alloc with caps %" GST_PTR_FORMAT
", size %u", caps, size);
GST_DEBUG_OBJECT (trans, "proxy buffer-alloc with caps %p %" GST_PTR_FORMAT
", size %u", caps, caps, size);
/* we always proxy the input caps, never the suggestion. The reason is that
* We don't yet handle the caps of renegotiation in here. FIXME */
@ -1625,8 +1649,8 @@ gst_base_transform_buffer_alloc (GstPad * pad, guint64 offset, guint size,
* it. Note that this format */
*buf = gst_buffer_new_and_alloc (size_suggest);
GST_DEBUG_OBJECT (trans,
"doing suggestion of size %u, caps %" GST_PTR_FORMAT, size_suggest,
sink_suggest);
"doing suggestion of size %u, caps %p %" GST_PTR_FORMAT, size_suggest,
sink_suggest, sink_suggest);
GST_BUFFER_CAPS (*buf) = sink_suggest;
}