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cvvideofilter: Check buffer_map return value

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Check the resturn value and cleanly fail if we could not mapped the buffers.

https://bugzilla.gnome.org/show_bug.cgi?id=732756
This commit is contained in:
Nicolas Dufresne 2014-07-04 20:30:20 -04:00
parent 77905f632e
commit 2acdb2ecf2
1 changed files with 24 additions and 4 deletions
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28
ext/opencv/gstopencvvideofilter.c
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@ -173,10 +173,13 @@ gst_opencv_video_filter_transform (GstBaseTransform * trans,
g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);
g_return_val_if_fail (transform->out_cvImage != NULL, GST_FLOW_ERROR);
gst_buffer_map (inbuf, &in_info, GST_MAP_READ);
transform->cvImage->imageData = (char *) in_info.data;
if (!gst_buffer_map (inbuf, &in_info, GST_MAP_READ))
goto inbuf_map_failed;
gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE);
if (!gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE))
goto outbuf_map_failed;
transform->cvImage->imageData = (char *) in_info.data;
transform->out_cvImage->imageData = (char *) out_info.data;
ret = fclass->cv_trans_func (transform, inbuf, transform->cvImage, outbuf,
@ -186,6 +189,17 @@ gst_opencv_video_filter_transform (GstBaseTransform * trans,
gst_buffer_unmap (outbuf, &out_info);
return ret;
inbuf_map_failed:
GST_ELEMENT_ERROR (transform, RESOURCE, READ,
("Failed to map buffer for reading"), (NULL));
return GST_FLOW_ERROR;
outbuf_map_failed:
GST_ELEMENT_ERROR (transform, RESOURCE, WRITE,
("Failed to map buffer for writing"), (NULL));
gst_buffer_unmap (inbuf, &in_info);
return GST_FLOW_ERROR;
}
static GstFlowReturn
@ -206,8 +220,9 @@ gst_opencv_video_filter_transform_ip (GstBaseTransform * trans,
/* TODO this is not always needed and should be solved at BaseTransform
* level */
buffer = gst_buffer_make_writable (buffer);
if (!gst_buffer_map (buffer, &info, GST_MAP_READWRITE))
goto map_failed;
gst_buffer_map (buffer, &info, GST_MAP_READWRITE);
transform->cvImage->imageData = (char *) info.data;
/* FIXME how to release buffer? */
@ -216,6 +231,11 @@ gst_opencv_video_filter_transform_ip (GstBaseTransform * trans,
gst_buffer_unmap (buffer, &info);
return ret;
map_failed:
GST_ELEMENT_ERROR (transform, RESOURCE, WRITE,
("Failed to map buffer for reading and writing"), (NULL));
return GST_FLOW_ERROR;
}
static gboolean