gstreamer/gst/gstquery.c
David Schleef e134f7f75b check/Makefile.am: remove GstData checks
Original commit message from CVS:
* check/Makefile.am: remove GstData checks
* check/gst-libs/gdp.c: (START_TEST): fix for API changes
* gst/Makefile.am: add miniobject, remove data
* gst/gst.h: add miniobject, remove data
* gst/gstdata.c: remove
* gst/gstdata.h: remove
* gst/gstdata_private.h: remove
* gst/gsttypes.h: remove GstEvent and GstMessage
* gst/gstelement.c: (gst_element_post_message): fix for API changes
* gst/gstmarshal.list: change BOXED -> OBJECT
Implement GstMiniObject.
* gst/gstminiobject.c:
* gst/gstminiobject.h:
Modify to be subclasses of GstMiniObject.
* gst/gstbuffer.c: (_gst_buffer_initialize), (gst_buffer_get_type),
(gst_buffer_class_init), (gst_buffer_finalize), (_gst_buffer_copy),
(gst_buffer_init), (gst_buffer_new), (gst_buffer_new_and_alloc),
(gst_subbuffer_get_type), (gst_subbuffer_init),
(gst_buffer_create_sub), (gst_buffer_is_span_fast),
(gst_buffer_span):
* gst/gstbuffer.h:
* gst/gstevent.c: (_gst_event_initialize), (gst_event_get_type),
(gst_event_class_init), (gst_event_init), (gst_event_finalize),
(_gst_event_copy), (gst_event_new):
* gst/gstevent.h:
* gst/gstmessage.c: (_gst_message_initialize),
(gst_message_get_type), (gst_message_class_init),
(gst_message_init), (gst_message_finalize), (_gst_message_copy),
(gst_message_new), (gst_message_new_error),
(gst_message_new_warning), (gst_message_new_tag),
(gst_message_new_state_changed), (gst_message_new_application):
* gst/gstmessage.h:
* gst/gstprobe.c: (gst_probe_perform),
(gst_probe_dispatcher_dispatch):
* gst/gstprobe.h:
* gst/gstquery.c: (_gst_query_initialize), (gst_query_get_type),
(gst_query_class_init), (gst_query_finalize), (gst_query_init),
(_gst_query_copy), (gst_query_new):
Update elements for GstData -> GstMiniObject changes
* gst/gstquery.h:
* gst/gstqueue.c: (gst_queue_finalize), (gst_queue_locked_flush),
(gst_queue_chain), (gst_queue_loop):
* gst/elements/gstbufferstore.c:
(gst_buffer_store_add_buffer_func),
(gst_buffer_store_cleared_func), (gst_buffer_store_get_buffer):
* gst/elements/gstfakesink.c: (gst_fakesink_class_init),
(gst_fakesink_render):
* gst/elements/gstfakesrc.c: (gst_fakesrc_class_init):
* gst/elements/gstfilesrc.c: (gst_mmap_buffer_get_type),
(gst_mmap_buffer_class_init), (gst_mmap_buffer_init),
(gst_mmap_buffer_finalize), (gst_filesrc_map_region),
(gst_filesrc_create_read):
* gst/elements/gstidentity.c: (gst_identity_class_init):
* gst/elements/gsttypefindelement.c:
(gst_type_find_element_src_event), (free_entry_buffers),
(gst_type_find_element_handle_event):
* libs/gst/dataprotocol/dataprotocol.c:
(gst_dp_header_from_buffer):
* libs/gst/dataprotocol/dataprotocol.h:
* libs/gst/dataprotocol/dp-private.h:
2005-05-16 20:21:55 +00:00

439 lines
11 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstquery.c: GstQueryType registration
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include "gst_private.h"
#include "gstquery.h"
#include "gstmemchunk.h"
#include "gstenumtypes.h"
GST_DEBUG_CATEGORY_STATIC (gst_query_debug);
#define GST_CAT_DEFAULT gst_query_debug
static void gst_query_init (GTypeInstance * instance, gpointer g_class);
static void gst_query_class_init (gpointer g_class, gpointer class_data);
static void gst_query_finalize (GstQuery * query);
static GstQuery *_gst_query_copy (GstQuery * query);
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
static GList *_gst_queries = NULL;
static GHashTable *_nick_to_query = NULL;
static GHashTable *_query_type_to_nick = NULL;
static guint32 _n_values = 1; /* we start from 1 because 0 reserved for NONE */
static GstMemChunk *chunk;
static GstQueryTypeDefinition standard_definitions[] = {
{GST_QUERY_TOTAL, "total", "Total length"}, /* deprecated */
{GST_QUERY_POSITION, "position", "Current Position"},
{GST_QUERY_LATENCY, "latency", "Latency"},
{GST_QUERY_JITTER, "jitter", "Jitter"},
{GST_QUERY_START, "start", "Start position of stream"}, /* deprecated */
{GST_QUERY_SEGMENT_END, "segment_end", "End position of the stream"}, /* dep */
{GST_QUERY_RATE, "rate", "Configured rate 1000000 = 1"},
{GST_QUERY_SEEKING, "seeking", "Seeking capabilities and parameters"},
{GST_QUERY_CONVERT, "convert", "Converting between formats"},
{0, NULL, NULL}
};
void
_gst_query_initialize (void)
{
GstQueryTypeDefinition *standards = standard_definitions;
GST_CAT_INFO (GST_CAT_GST_INIT, "init queries");
GST_DEBUG_CATEGORY_INIT (gst_query_debug, "query", 0, "query system");
g_static_mutex_lock (&mutex);
if (_nick_to_query == NULL) {
_nick_to_query = g_hash_table_new (g_str_hash, g_str_equal);
_query_type_to_nick = g_hash_table_new (NULL, NULL);
}
while (standards->nick) {
g_hash_table_insert (_nick_to_query, standards->nick, standards);
g_hash_table_insert (_query_type_to_nick,
GINT_TO_POINTER (standards->value), standards);
_gst_queries = g_list_append (_gst_queries, standards);
standards++;
_n_values++;
}
g_static_mutex_unlock (&mutex);
gst_query_get_type ();
chunk = gst_mem_chunk_new ("GstQueryChunk", sizeof (GstQuery),
sizeof (GstQuery) * 20, 0);
}
GType
gst_query_get_type (void)
{
static GType _gst_query_type;
if (G_UNLIKELY (_gst_query_type == 0)) {
static const GTypeInfo query_info = {
sizeof (GstQueryClass),
NULL,
NULL,
gst_query_class_init,
NULL,
NULL,
sizeof (GstQuery),
0,
gst_query_init,
NULL
};
_gst_query_type = g_type_register_static (GST_TYPE_MINI_OBJECT,
"GstQuery", &query_info, 0);
}
return _gst_query_type;
}
static void
gst_query_class_init (gpointer g_class, gpointer class_data)
{
GstQueryClass *query_class = GST_QUERY_CLASS (g_class);
query_class->mini_object_class.copy =
(GstMiniObjectCopyFunction) _gst_query_copy;
query_class->mini_object_class.finalize =
(GstMiniObjectFinalizeFunction) gst_query_finalize;
}
static void
gst_query_finalize (GstQuery * query)
{
g_return_if_fail (query != NULL);
if (query->structure) {
gst_structure_set_parent_refcount (query->structure, NULL);
gst_structure_free (query->structure);
}
}
static void
gst_query_init (GTypeInstance * instance, gpointer g_class)
{
}
static GstQuery *
_gst_query_copy (GstQuery * query)
{
GstQuery *copy;
copy = (GstQuery *) gst_mini_object_new (GST_TYPE_QUERY);
copy->type = query->type;
if (query->structure) {
copy->structure = gst_structure_copy (query->structure);
gst_structure_set_parent_refcount (copy->structure,
&query->mini_object.refcount);
}
return copy;
}
/**
* gst_query_type_register:
* @nick: The nick of the new query
* @description: The description of the new query
*
* Create a new GstQueryType based on the nick or return an
* allrady registered query with that nick
*
* Returns: A new GstQueryType or an already registered query
* with the same nick.
*/
GstQueryType
gst_query_type_register (const gchar * nick, const gchar * description)
{
GstQueryTypeDefinition *query;
GstQueryType lookup;
g_return_val_if_fail (nick != NULL, 0);
g_return_val_if_fail (description != NULL, 0);
lookup = gst_query_type_get_by_nick (nick);
if (lookup != GST_QUERY_NONE)
return lookup;
query = g_new0 (GstQueryTypeDefinition, 1);
query->value = _n_values;
query->nick = g_strdup (nick);
query->description = g_strdup (description);
g_static_mutex_lock (&mutex);
g_hash_table_insert (_nick_to_query, query->nick, query);
g_hash_table_insert (_query_type_to_nick, GINT_TO_POINTER (query->value),
query);
_gst_queries = g_list_append (_gst_queries, query);
_n_values++;
g_static_mutex_unlock (&mutex);
return query->value;
}
/**
* gst_query_type_get_by_nick:
* @nick: The nick of the query
*
* Return the query registered with the given nick.
*
* Returns: The query with @nick or GST_QUERY_NONE
* if the query was not registered.
*/
GstQueryType
gst_query_type_get_by_nick (const gchar * nick)
{
GstQueryTypeDefinition *query;
g_return_val_if_fail (nick != NULL, 0);
g_static_mutex_lock (&mutex);
query = g_hash_table_lookup (_nick_to_query, nick);
g_static_mutex_unlock (&mutex);
if (query != NULL)
return query->value;
else
return GST_QUERY_NONE;
}
/**
* gst_query_types_contains:
* @types: The query array to search
* @type: the querytype to find
*
* See if the given query is inside the query array.
*
* Returns: TRUE if the query is found inside the array
*/
gboolean
gst_query_types_contains (const GstQueryType * types, GstQueryType type)
{
if (!types)
return FALSE;
while (*types) {
if (*types == type)
return TRUE;
types++;
}
return FALSE;
}
/**
* gst_query_type_get_details:
* @type: The query to get details of
*
* Get details about the given query.
*
* Returns: The #GstQueryTypeDefinition for @query or NULL on failure.
*/
const GstQueryTypeDefinition *
gst_query_type_get_details (GstQueryType type)
{
const GstQueryTypeDefinition *result;
g_static_mutex_lock (&mutex);
result = g_hash_table_lookup (_query_type_to_nick, GINT_TO_POINTER (type));
g_static_mutex_unlock (&mutex);
return result;
}
/**
* gst_query_type_iterate_definitions:
*
* Get an Iterator of all the registered query types. The querytype
* definition is read only.
*
* Returns: A #GstIterator of #GstQueryTypeDefinition.
*/
GstIterator *
gst_query_type_iterate_definitions (void)
{
GstIterator *result;
g_static_mutex_lock (&mutex);
result = gst_iterator_new_list (g_static_mutex_get_mutex (&mutex),
&_n_values, &_gst_queries, NULL, NULL, NULL);
g_static_mutex_unlock (&mutex);
return result;
}
static GstQuery *
gst_query_new (GstQueryType type, GstStructure * structure)
{
GstQuery *query;
query = (GstQuery *) gst_mini_object_new (GST_TYPE_QUERY);
GST_DEBUG ("creating new query %p %d", query, type);
query->type = type;
if (structure) {
query->structure = structure;
gst_structure_set_parent_refcount (query->structure,
&query->mini_object.refcount);
} else {
query->structure = NULL;
}
return query;
}
GstQuery *
gst_query_new_position (GstFormat format)
{
GstQuery *query;
GstStructure *structure;
structure = gst_structure_new ("GstQueryPosition",
"format", GST_TYPE_FORMAT, format,
"cur", G_TYPE_INT64, (gint64) - 1,
"end", G_TYPE_INT64, (gint64) - 1, NULL);
query = gst_query_new (GST_QUERY_POSITION, structure);
return query;
}
void
gst_query_set_position (GstQuery * query, GstFormat format,
gint64 cur, gint64 end)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_POSITION);
structure = gst_query_get_structure (query);
gst_structure_set (structure,
"format", GST_TYPE_FORMAT, format,
"cur", G_TYPE_INT64, cur, "end", G_TYPE_INT64, end, NULL);
}
void
gst_query_parse_position (GstQuery * query, GstFormat * format,
gint64 * cur, gint64 * end)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_POSITION);
structure = gst_query_get_structure (query);
if (format)
*format = g_value_get_enum (gst_structure_get_value (structure, "format"));
if (cur)
*cur = g_value_get_int64 (gst_structure_get_value (structure, "cur"));
if (end)
*end = g_value_get_int64 (gst_structure_get_value (structure, "end"));
}
GstQuery *
gst_query_new_convert (GstFormat src_fmt, gint64 value, GstFormat dest_fmt)
{
GstQuery *query;
GstStructure *structure;
structure = gst_structure_new ("GstQueryConvert",
"src_format", GST_TYPE_FORMAT, src_fmt,
"src_value", G_TYPE_INT64, value,
"dest_format", GST_TYPE_FORMAT, dest_fmt,
"dest_value", G_TYPE_INT64, (gint64) - 1, NULL);
query = gst_query_new (GST_QUERY_CONVERT, structure);
return query;
}
void
gst_query_set_convert (GstQuery * query, GstFormat src_format, gint64 src_value,
GstFormat dest_format, gint64 dest_value)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_CONVERT);
structure = gst_query_get_structure (query);
gst_structure_set (structure,
"src_format", GST_TYPE_FORMAT, src_format,
"src_value", G_TYPE_INT64, src_value,
"dest_format", GST_TYPE_FORMAT, dest_format,
"dest_value", G_TYPE_INT64, dest_value, NULL);
}
void
gst_query_parse_convert (GstQuery * query, GstFormat * src_format,
gint64 * src_value, GstFormat * dest_format, gint64 * dest_value)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_CONVERT);
structure = gst_query_get_structure (query);
if (src_format)
*src_format =
g_value_get_enum (gst_structure_get_value (structure, "src_format"));
if (src_value)
*src_value =
g_value_get_int64 (gst_structure_get_value (structure, "src_value"));
if (dest_format)
*dest_format =
g_value_get_enum (gst_structure_get_value (structure, "dest_format"));
if (dest_value)
*dest_value =
g_value_get_int64 (gst_structure_get_value (structure, "dest_value"));
}
GstQuery *
gst_query_new_application (GstQueryType type, GstStructure * structure)
{
g_return_val_if_fail (gst_query_type_get_details (type) != NULL, NULL);
g_return_val_if_fail (structure != NULL, NULL);
return gst_query_new (type, structure);
}
GstStructure *
gst_query_get_structure (GstQuery * query)
{
g_return_val_if_fail (GST_IS_QUERY (query), NULL);
return query->structure;
}