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pad: move query convenience functions together

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Move the caps convenience functions to the other query functions.
This commit is contained in:
Wim Taymans 2011-11-15 18:16:24 +01:00
parent e85198bc32
commit f746174c10
5 changed files with 162 additions and 161 deletions
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14
docs/gst/gstreamer-sections.txt
View file

@ -1589,14 +1589,12 @@ gst_pad_unlink
gst_pad_is_linked
gst_pad_can_link
gst_pad_query_caps
gst_pad_get_allowed_caps
gst_pad_get_current_caps
gst_pad_get_pad_template_caps
gst_pad_set_caps
gst_pad_get_peer
gst_pad_peer_query_caps
gst_pad_use_fixed_caps
gst_pad_has_current_caps
@ -1638,13 +1636,9 @@ GstPadLinkFunction
gst_pad_set_unlink_function
GstPadUnlinkFunction
gst_pad_query_accept_caps
gst_pad_proxy_query_caps
gst_pad_proxy_query_accept_caps
gst_pad_peer_query_accept_caps
gst_pad_set_activate_function
GstPadActivateFunction
@ -1666,13 +1660,21 @@ gst_pad_event_default
gst_pad_query
gst_pad_peer_query
gst_pad_query_default
gst_pad_query_position
gst_pad_query_duration
gst_pad_query_convert
gst_pad_query_accept_caps
gst_pad_query_caps
gst_pad_peer_query_position
gst_pad_peer_query_duration
gst_pad_peer_query_convert
gst_pad_peer_query_accept_caps
gst_pad_peer_query_caps
gst_pad_set_query_function
GstPadQueryFunction
gst_pad_set_iterate_internal_links_function

150
gst/gstpad.c
View file

@ -2106,156 +2106,6 @@ gst_pad_get_current_caps (GstPad * pad)
return result;
}
/**
* gst_pad_query_caps:
* @pad: a #GstPad to get the capabilities of.
* @filter: suggested #GstCaps.
*
* Gets the capabilities this pad can produce or consume.
* Note that this method doesn't necessarily return the caps set by
* gst_pad_set_caps() - use gst_pad_get_current_caps() for that instead.
* gst_pad_query_caps returns all possible caps a pad can operate with, using
* the pad's CAPS query function, If the query fails, this function will return
* @filter, if not #NULL, otherwise ANY.
*
* When called on sinkpads @filter contains the caps that
* upstream could produce in the order preferred by upstream. When
* called on srcpads @filter contains the caps accepted by
* downstream in the preffered order. @filter might be %NULL but
* if it is not %NULL the returned caps will be a subset of @filter.
*
* Note that this function does not return writable #GstCaps, use
* gst_caps_make_writable() before modifying the caps.
*
* Returns: (transfer full): the caps of the pad with incremented ref-count.
*/
GstCaps *
gst_pad_query_caps (GstPad * pad, GstCaps * filter)
{
GstCaps *result = NULL;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
g_return_val_if_fail (filter == NULL || GST_IS_CAPS (filter), NULL);
GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "get pad caps");
query = gst_query_new_caps (filter);
if (gst_pad_query (pad, query)) {
gst_query_parse_caps_result (query, &result);
gst_caps_ref (result);
GST_DEBUG_OBJECT (pad, "query returned %" GST_PTR_FORMAT, result);
} else if (filter) {
result = gst_caps_ref (filter);
} else {
result = gst_caps_new_any ();
}
gst_query_unref (query);
return result;
}
/**
* gst_pad_peer_query_caps:
* @pad: a #GstPad to get the capabilities of.
* @filter: a #GstCaps filter.
*
* Gets the capabilities of the peer connected to this pad. Similar to
* gst_pad_query_caps().
*
* When called on srcpads @filter contains the caps that
* upstream could produce in the order preferred by upstream. When
* called on sinkpads @filter contains the caps accepted by
* downstream in the preffered order. @filter might be %NULL but
* if it is not %NULL the returned caps will be a subset of @filter.
*
* Returns: the caps of the peer pad with incremented ref-count. This function
* returns %NULL when there is no peer pad.
*/
GstCaps *
gst_pad_peer_query_caps (GstPad * pad, GstCaps * filter)
{
GstCaps *result = NULL;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
g_return_val_if_fail (filter == NULL || GST_IS_CAPS (filter), NULL);
query = gst_query_new_caps (filter);
if (gst_pad_peer_query (pad, query)) {
gst_query_parse_caps_result (query, &result);
gst_caps_ref (result);
GST_DEBUG_OBJECT (pad, "peer query returned %d", result);
} else if (filter) {
result = gst_caps_ref (filter);
} else {
result = gst_caps_new_any ();
}
gst_query_unref (query);
return result;
}
/**
* gst_pad_query_accept_caps:
* @pad: a #GstPad to check
* @caps: a #GstCaps to check on the pad
*
* Check if the given pad accepts the caps.
*
* Returns: TRUE if the pad can accept the caps.
*/
gboolean
gst_pad_query_accept_caps (GstPad * pad, GstCaps * caps)
{
gboolean res = TRUE;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "accept caps of %p", caps);
query = gst_query_new_accept_caps (caps);
if (gst_pad_query (pad, query)) {
GST_DEBUG_OBJECT (pad, "query returned %d", res);
gst_query_parse_accept_caps_result (query, &res);
}
gst_query_unref (query);
return res;
}
/**
* gst_pad_peer_query_accept_caps:
* @pad: a #GstPad to check the peer of
* @caps: a #GstCaps to check on the pad
*
* Check if the peer of @pad accepts @caps. If @pad has no peer, this function
* returns TRUE.
*
* Returns: TRUE if the peer of @pad can accept the caps or @pad has no peer.
*/
gboolean
gst_pad_peer_query_accept_caps (GstPad * pad, GstCaps * caps)
{
gboolean res = TRUE;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
query = gst_query_new_accept_caps (caps);
if (gst_pad_peer_query (pad, query)) {
GST_DEBUG_OBJECT (pad, "query returned %d", res);
gst_query_parse_accept_caps_result (query, &res);
}
gst_query_unref (query);
return res;
}
/**
* gst_pad_set_caps:
* @pad: a #GstPad to set the capabilities of.

5
gst/gstpad.h
View file

@ -834,13 +834,8 @@ GstCaps* gst_pad_get_pad_template_caps (GstPad *pad);
/* capsnego function for linked/unlinked pads */
GstCaps * gst_pad_get_current_caps (GstPad * pad);
gboolean gst_pad_has_current_caps (GstPad * pad);
GstCaps * gst_pad_query_caps (GstPad * pad, GstCaps *filter);
gboolean gst_pad_query_accept_caps (GstPad * pad, GstCaps *caps);
gboolean gst_pad_set_caps (GstPad * pad, GstCaps *caps);
GstCaps * gst_pad_peer_query_caps (GstPad * pad, GstCaps *filter);
gboolean gst_pad_peer_query_accept_caps (GstPad * pad, GstCaps *caps);
/* capsnego for linked pads */
GstCaps * gst_pad_get_allowed_caps (GstPad * pad);

149
gst/gstutils.c
View file

@ -3038,6 +3038,155 @@ gst_pad_peer_query_convert (GstPad * pad, GstFormat src_format, gint64 src_val,
return ret;
}
/**
* gst_pad_query_caps:
* @pad: a #GstPad to get the capabilities of.
* @filter: suggested #GstCaps.
*
* Gets the capabilities this pad can produce or consume.
* Note that this method doesn't necessarily return the caps set by
* gst_pad_set_caps() - use gst_pad_get_current_caps() for that instead.
* gst_pad_query_caps returns all possible caps a pad can operate with, using
* the pad's CAPS query function, If the query fails, this function will return
* @filter, if not #NULL, otherwise ANY.
*
* When called on sinkpads @filter contains the caps that
* upstream could produce in the order preferred by upstream. When
* called on srcpads @filter contains the caps accepted by
* downstream in the preffered order. @filter might be %NULL but
* if it is not %NULL the returned caps will be a subset of @filter.
*
* Note that this function does not return writable #GstCaps, use
* gst_caps_make_writable() before modifying the caps.
*
* Returns: (transfer full): the caps of the pad with incremented ref-count.
*/
GstCaps *
gst_pad_query_caps (GstPad * pad, GstCaps * filter)
{
GstCaps *result = NULL;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
g_return_val_if_fail (filter == NULL || GST_IS_CAPS (filter), NULL);
GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "get pad caps");
query = gst_query_new_caps (filter);
if (gst_pad_query (pad, query)) {
gst_query_parse_caps_result (query, &result);
gst_caps_ref (result);
GST_DEBUG_OBJECT (pad, "query returned %" GST_PTR_FORMAT, result);
} else if (filter) {
result = gst_caps_ref (filter);
} else {
result = gst_caps_new_any ();
}
gst_query_unref (query);
return result;
}
/**
* gst_pad_peer_query_caps:
* @pad: a #GstPad to get the capabilities of.
* @filter: a #GstCaps filter.
*
* Gets the capabilities of the peer connected to this pad. Similar to
* gst_pad_query_caps().
*
* When called on srcpads @filter contains the caps that
* upstream could produce in the order preferred by upstream. When
* called on sinkpads @filter contains the caps accepted by
* downstream in the preffered order. @filter might be %NULL but
* if it is not %NULL the returned caps will be a subset of @filter.
*
* Returns: the caps of the peer pad with incremented ref-count. This function
* returns %NULL when there is no peer pad.
*/
GstCaps *
gst_pad_peer_query_caps (GstPad * pad, GstCaps * filter)
{
GstCaps *result = NULL;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
g_return_val_if_fail (filter == NULL || GST_IS_CAPS (filter), NULL);
query = gst_query_new_caps (filter);
if (gst_pad_peer_query (pad, query)) {
gst_query_parse_caps_result (query, &result);
gst_caps_ref (result);
GST_DEBUG_OBJECT (pad, "peer query returned %d", result);
} else if (filter) {
result = gst_caps_ref (filter);
} else {
result = gst_caps_new_any ();
}
gst_query_unref (query);
return result;
}
/**
* gst_pad_query_accept_caps:
* @pad: a #GstPad to check
* @caps: a #GstCaps to check on the pad
*
* Check if the given pad accepts the caps.
*
* Returns: TRUE if the pad can accept the caps.
*/
gboolean
gst_pad_query_accept_caps (GstPad * pad, GstCaps * caps)
{
gboolean res = TRUE;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "accept caps of %p", caps);
query = gst_query_new_accept_caps (caps);
if (gst_pad_query (pad, query)) {
GST_DEBUG_OBJECT (pad, "query returned %d", res);
gst_query_parse_accept_caps_result (query, &res);
}
gst_query_unref (query);
return res;
}
/**
* gst_pad_peer_query_accept_caps:
* @pad: a #GstPad to check the peer of
* @caps: a #GstCaps to check on the pad
*
* Check if the peer of @pad accepts @caps. If @pad has no peer, this function
* returns TRUE.
*
* Returns: TRUE if the peer of @pad can accept the caps or @pad has no peer.
*/
gboolean
gst_pad_peer_query_accept_caps (GstPad * pad, GstCaps * caps)
{
gboolean res = TRUE;
GstQuery *query;
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
query = gst_query_new_accept_caps (caps);
if (gst_pad_peer_query (pad, query)) {
GST_DEBUG_OBJECT (pad, "query returned %d", res);
gst_query_parse_accept_caps_result (query, &res);
}
gst_query_unref (query);
return res;
}
static GstPad *
element_find_unlinked_pad (GstElement * element, GstPadDirection direction)
{

5
gst/gstutils.h
View file

@ -901,11 +901,16 @@ gboolean gst_pad_query_position (GstPad *pad, GstFormat
gboolean gst_pad_query_duration (GstPad *pad, GstFormat format, gint64 *duration);
gboolean gst_pad_query_convert (GstPad *pad, GstFormat src_format, gint64 src_val,
GstFormat dest_format, gint64 *dest_val);
GstCaps * gst_pad_query_caps (GstPad *pad, GstCaps *filter);
gboolean gst_pad_query_accept_caps (GstPad *pad, GstCaps *caps);
gboolean gst_pad_peer_query_position (GstPad *pad, GstFormat format, gint64 *cur);
gboolean gst_pad_peer_query_duration (GstPad *pad, GstFormat format, gint64 *duration);
gboolean gst_pad_peer_query_convert (GstPad *pad, GstFormat src_format, gint64 src_val,
GstFormat dest_format, gint64 *dest_val);
GstCaps * gst_pad_peer_query_caps (GstPad * pad, GstCaps *filter);
gboolean gst_pad_peer_query_accept_caps (GstPad * pad, GstCaps *caps);
/* bin functions */
void gst_bin_add_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED;