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media: check if prepared for some methods

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Check that the media object is prepared before doing seek and getting the
current position etc.
Add some g_return checks.
This commit is contained in:
Wim Taymans 2012-11-28 14:45:30 +01:00
parent b5fe0c29f1
commit e11287eb7c
1 changed files with 44 additions and 2 deletions
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46
gst/rtsp-server/rtsp-media.c
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@ -792,7 +792,8 @@ gst_rtsp_media_get_stream (GstRTSPMedia * media, guint idx)
* @media: a #GstRTSPMedia
* @play: for the PLAY request
*
* Get the current range as a string.
* Get the current range as a string. @media must be prepared with
* gst_rtsp_media_prepare ().
*
* Returns: The range as a string, g_free() after usage.
*/
@ -802,6 +803,12 @@ gst_rtsp_media_get_range_string (GstRTSPMedia * media, gboolean play)
gchar *result;
GstRTSPTimeRange range;
g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), NULL);
g_rec_mutex_lock (&media->state_lock);
if (media->status != GST_RTSP_MEDIA_STATUS_PREPARED)
goto not_prepared;
g_mutex_lock (&media->lock);
/* make copy */
range = media->range;
@ -811,10 +818,19 @@ gst_rtsp_media_get_range_string (GstRTSPMedia * media, gboolean play)
range.min.seconds = -1;
}
g_mutex_unlock (&media->lock);
g_rec_mutex_unlock (&media->state_lock);
result = gst_rtsp_range_to_string (&range);
return result;
/* ERRORS */
not_prepared:
{
GST_WARNING ("media %p was not prepared", media);
g_rec_mutex_unlock (&media->state_lock);
return NULL;
}
}
/**
@ -822,7 +838,8 @@ gst_rtsp_media_get_range_string (GstRTSPMedia * media, gboolean play)
* @media: a #GstRTSPMedia
* @range: a #GstRTSPTimeRange
*
* Seek the pipeline to @range.
* Seek the pipeline of @media to @range. @media must be prepared with
* gst_rtsp_media_prepare().
*
* Returns: %TRUE on success.
*/
@ -838,6 +855,9 @@ gst_rtsp_media_seek (GstRTSPMedia * media, GstRTSPTimeRange * range)
g_return_val_if_fail (range != NULL, FALSE);
g_rec_mutex_lock (&media->state_lock);
if (media->status != GST_RTSP_MEDIA_STATUS_PREPARED)
goto not_prepared;
if (!media->seekable)
goto not_seekable;
@ -887,6 +907,12 @@ gst_rtsp_media_seek (GstRTSPMedia * media, GstRTSPTimeRange * range)
return res;
/* ERRORS */
not_prepared:
{
g_rec_mutex_unlock (&media->state_lock);
GST_INFO ("media %p is not prepared", media);
return FALSE;
}
not_seekable:
{
g_rec_mutex_unlock (&media->state_lock);
@ -1139,6 +1165,8 @@ gst_rtsp_media_prepare (GstRTSPMedia * media)
GstBus *bus;
GList *walk;
g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), FALSE);
g_rec_mutex_lock (&media->state_lock);
if (media->status == GST_RTSP_MEDIA_STATUS_PREPARED)
goto was_prepared;
@ -1360,6 +1388,8 @@ gst_rtsp_media_unprepare (GstRTSPMedia * media)
{
gboolean success;
g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), FALSE);
g_rec_mutex_lock (&media->state_lock);
if (media->status == GST_RTSP_MEDIA_STATUS_UNPREPARED)
goto was_unprepared;
@ -1397,6 +1427,8 @@ was_unprepared:
*
* Set the state of @media to @state and for the transports in @transports.
*
* @media must be prepared with gst_rtsp_media_prepare();
*
* Returns: %TRUE on success.
*/
gboolean
@ -1411,6 +1443,8 @@ gst_rtsp_media_set_state (GstRTSPMedia * media, GstState state,
g_return_val_if_fail (transports != NULL, FALSE);
g_rec_mutex_lock (&media->state_lock);
if (media->status != GST_RTSP_MEDIA_STATUS_PREPARED)
goto not_prepared;
/* NULL and READY are the same */
if (state == GST_STATE_READY)
@ -1493,4 +1527,12 @@ gst_rtsp_media_set_state (GstRTSPMedia * media, GstState state,
g_rec_mutex_unlock (&media->state_lock);
return TRUE;
/* ERRORS */
not_prepared:
{
GST_WARNING ("media %p was not prepared", media);
g_rec_mutex_unlock (&media->state_lock);
return FALSE;
}
}