gstreamer/gst/gstquery.h

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
* 2011 Wim Taymans <wim.taymans@gmail.com>
*
* gstquery.h: GstQuery API declaration
*
* 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.
*/
#ifndef __GST_QUERY_H__
#define __GST_QUERY_H__
#include <glib.h>
#include <gst/gstiterator.h>
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:
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#include <gst/gstminiobject.h>
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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#include <gst/gststructure.h>
#include <gst/gstformat.h>
#include <gst/gstpad.h>
#include <gst/gsttoc.h>
G_BEGIN_DECLS
typedef struct _GstQuery GstQuery;
/**
* GstQueryTypeFlags:
* @GST_QUERY_TYPE_UPSTREAM: Set if the query can travel upstream.
* @GST_QUERY_TYPE_DOWNSTREAM: Set if the query can travel downstream.
* @GST_QUERY_TYPE_SERIALIZED: Set if the query should be serialized with data
* flow.
*
* #GstQueryTypeFlags indicate the aspects of the different #GstQueryType
* values. You can get the type flags of a #GstQueryType with the
* gst_query_type_get_flags() function.
*/
typedef enum {
GST_QUERY_TYPE_UPSTREAM = 1 << 0,
GST_QUERY_TYPE_DOWNSTREAM = 1 << 1,
GST_QUERY_TYPE_SERIALIZED = 1 << 2
} GstQueryTypeFlags;
/**
* GST_QUERY_TYPE_BOTH:
*
* The same thing as #GST_QUERY_TYPE_UPSTREAM | #GST_QUERY_TYPE_DOWNSTREAM.
*/
#define GST_QUERY_TYPE_BOTH \
(GST_QUERY_TYPE_UPSTREAM | GST_QUERY_TYPE_DOWNSTREAM)
#define GST_QUERY_NUM_SHIFT (8)
/**
* GST_QUERY_MAKE_TYPE:
* @num: the query number to create
* @flags: the query flags
*
* when making custom query types, use this macro with the num and
* the given flags
*/
#define GST_QUERY_MAKE_TYPE(num,flags) \
(((num) << GST_QUERY_NUM_SHIFT) | (flags))
#define FLAG(name) GST_QUERY_TYPE_##name
/**
* GstQueryType:
* @GST_QUERY_UNKNOWN: unknown query type
* @GST_QUERY_POSITION: current position in stream
* @GST_QUERY_DURATION: total duration of the stream
* @GST_QUERY_LATENCY: latency of stream
* @GST_QUERY_JITTER: current jitter of stream
* @GST_QUERY_RATE: current rate of the stream
* @GST_QUERY_SEEKING: seeking capabilities
* @GST_QUERY_SEGMENT: segment start/stop positions
* @GST_QUERY_CONVERT: convert values between formats
* @GST_QUERY_FORMATS: query supported formats for convert
* @GST_QUERY_BUFFERING: query available media for efficient seeking. Since
* 0.10.20.
* @GST_QUERY_CUSTOM: a custom application or element defined query. Since
* 0.10.22.
* @GST_QUERY_URI: query the URI of the source or sink. Since 0.10.22.
* @GST_QUERY_ALLOCATION: the buffer allocation properties
* @GST_QUERY_SCHEDULING: the scheduling properties
* @GST_QUERY_ACCEPT_CAPS: the accept caps query
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* @GST_QUERY_CAPS: the caps query
* @GST_QUERY_DRAIN: wait till all serialized data is consumed downstream
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* @GST_QUERY_TOC: query the full table of contents (TOC) with the marker
* for an entry which can be used to extend received TOC. Since 0.10.37.
*
* Standard predefined Query types
*/
/* NOTE: don't forget to update the table in gstquery.c when changing
* this enum */
typedef enum {
GST_QUERY_UNKNOWN = GST_QUERY_MAKE_TYPE (0, 0),
GST_QUERY_POSITION = GST_QUERY_MAKE_TYPE (10, FLAG(BOTH)),
GST_QUERY_DURATION = GST_QUERY_MAKE_TYPE (20, FLAG(BOTH)),
GST_QUERY_LATENCY = GST_QUERY_MAKE_TYPE (30, FLAG(BOTH)),
GST_QUERY_JITTER = GST_QUERY_MAKE_TYPE (40, FLAG(BOTH)),
GST_QUERY_RATE = GST_QUERY_MAKE_TYPE (50, FLAG(BOTH)),
GST_QUERY_SEEKING = GST_QUERY_MAKE_TYPE (60, FLAG(BOTH)),
GST_QUERY_SEGMENT = GST_QUERY_MAKE_TYPE (70, FLAG(BOTH)),
GST_QUERY_CONVERT = GST_QUERY_MAKE_TYPE (80, FLAG(BOTH)),
GST_QUERY_FORMATS = GST_QUERY_MAKE_TYPE (90, FLAG(BOTH)),
GST_QUERY_BUFFERING = GST_QUERY_MAKE_TYPE (110, FLAG(BOTH)),
GST_QUERY_CUSTOM = GST_QUERY_MAKE_TYPE (120, FLAG(BOTH)),
GST_QUERY_URI = GST_QUERY_MAKE_TYPE (130, FLAG(BOTH)),
GST_QUERY_ALLOCATION = GST_QUERY_MAKE_TYPE (140, FLAG(DOWNSTREAM) | FLAG(SERIALIZED)),
GST_QUERY_SCHEDULING = GST_QUERY_MAKE_TYPE (150, FLAG(UPSTREAM)),
GST_QUERY_ACCEPT_CAPS = GST_QUERY_MAKE_TYPE (160, FLAG(BOTH)),
GST_QUERY_CAPS = GST_QUERY_MAKE_TYPE (170, FLAG(BOTH)),
GST_QUERY_DRAIN = GST_QUERY_MAKE_TYPE (180, FLAG(DOWNSTREAM) | FLAG(SERIALIZED)),
GST_QUERY_TOC = GST_QUERY_MAKE_TYPE (190, FLAG(BOTH))
} GstQueryType;
#undef FLAG
#define GST_TYPE_QUERY (gst_query_get_type())
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#define GST_IS_QUERY(obj) (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_QUERY))
#define GST_QUERY_CAST(obj) ((GstQuery*)(obj))
#define GST_QUERY(obj) (GST_QUERY_CAST(obj))
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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/**
* GST_QUERY_TYPE:
* @query: the query to query
*
* Get the #GstQueryType of the query.
*/
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:
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#define GST_QUERY_TYPE(query) (((GstQuery*)(query))->type)
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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/**
* GST_QUERY_TYPE_NAME:
* @query: the query to query
*
* Get a constant string representation of the #GstQueryType of the query.
*
* Since: 0.10.4
*/
#define GST_QUERY_TYPE_NAME(query) (gst_query_type_get_name(GST_QUERY_TYPE(query)))
/**
* GST_QUERY_IS_UPSTREAM:
* @ev: the query to query
*
* Check if an query can travel upstream.
*/
#define GST_QUERY_IS_UPSTREAM(ev) !!(GST_QUERY_TYPE (ev) & GST_QUERY_TYPE_UPSTREAM)
/**
* GST_QUERY_IS_DOWNSTREAM:
* @ev: the query to query
*
* Check if an query can travel downstream.
*/
#define GST_QUERY_IS_DOWNSTREAM(ev) !!(GST_QUERY_TYPE (ev) & GST_QUERY_TYPE_DOWNSTREAM)
/**
* GST_QUERY_IS_SERIALIZED:
* @ev: the query to query
*
* Check if an query is serialized with the data stream.
*/
#define GST_QUERY_IS_SERIALIZED(ev) !!(GST_QUERY_TYPE (ev) & GST_QUERY_TYPE_SERIALIZED)
/**
* GstQuery:
* @mini_object: The parent #GstMiniObject type
* @type: the #GstQueryType
*
* The #GstQuery structure.
*/
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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struct _GstQuery
{
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:
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GstMiniObject mini_object;
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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/*< public > *//* with COW */
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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GstQueryType type;
};
const gchar* gst_query_type_get_name (GstQueryType type);
GQuark gst_query_type_to_quark (GstQueryType type);
GstQueryTypeFlags
gst_query_type_get_flags (GstQueryType type);
GType gst_query_get_type (void);
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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/* refcounting */
/**
* gst_query_ref:
* @q: a #GstQuery to increase the refcount of.
*
* Increases the refcount of the given query by one.
*
* Returns: @q
*/
#ifdef _FOOL_GTK_DOC_
G_INLINE_FUNC GstQuery * gst_query_ref (GstQuery * q);
#endif
static inline GstQuery *
gst_query_ref (GstQuery * q)
{
return GST_QUERY_CAST (gst_mini_object_ref (GST_MINI_OBJECT_CAST (q)));
}
/**
* gst_query_unref:
* @q: a #GstQuery to decrease the refcount of.
*
* Decreases the refcount of the query. If the refcount reaches 0, the query
* will be freed.
*/
#ifdef _FOOL_GTK_DOC_
G_INLINE_FUNC void gst_query_unref (GstQuery * q);
#endif
static inline void
gst_query_unref (GstQuery * q)
{
gst_mini_object_unref (GST_MINI_OBJECT_CAST (q));
}
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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/* copy query */
/**
* gst_query_copy:
* @q: a #GstQuery to copy.
*
* Copies the given query using the copy function of the parent #GstStructure.
*
* Free-function: gst_query_unref
*
* Returns: (transfer full): a new copy of @q.
*/
#ifdef _FOOL_GTK_DOC_
G_INLINE_FUNC GstQuery * gst_query_copy (const GstQuery * q);
#endif
static inline GstQuery *
gst_query_copy (const GstQuery * q)
{
return GST_QUERY_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (q)));
}
/**
* gst_query_is_writable:
* @q: a #GstQuery
*
* Tests if you can safely write data into a query's structure.
*/
#define gst_query_is_writable(q) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (q))
/**
* gst_query_make_writable:
* @q: (transfer full): a #GstQuery to make writable
*
* Makes a writable query from the given query.
*
* Returns: (transfer full): a new writable query (possibly same as @q)
*/
#define gst_query_make_writable(q) GST_QUERY_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (q)))
/**
* gst_query_replace:
* @old_query: (inout) (transfer full): pointer to a pointer to a #GstQuery
* to be replaced.
* @new_query: (allow-none) (transfer none): pointer to a #GstQuery that will
* replace the query pointed to by @old_query.
*
* Modifies a pointer to a #GstQuery to point to a different #GstQuery. The
* modification is done atomically (so this is useful for ensuring thread safety
* in some cases), and the reference counts are updated appropriately (the old
* query is unreffed, the new one is reffed).
*
* Either @new_query or the #GstQuery pointed to by @old_query may be NULL.
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*
* Returns: TRUE if @new_query was different from @old_query
*/
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#ifdef _FOOL_GTK_DOC_
G_INLINE_FUNC gboolean gst_query_replace (GstQuery **old_query, GstQuery *new_query);
#endif
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static inline gboolean
gst_query_replace (GstQuery **old_query, GstQuery *new_query)
{
return gst_mini_object_replace ((GstMiniObject **) old_query, (GstMiniObject *) new_query);
}
/* application specific query */
GstQuery * gst_query_new_custom (GstQueryType type, GstStructure *structure) G_GNUC_MALLOC;
const GstStructure *
gst_query_get_structure (GstQuery *query);
GstStructure * gst_query_writable_structure (GstQuery *query);
gst/gstquery.h Original commit message from CVS: 2005-05-06 Andy Wingo <wingo@pobox.com> * gst/gstquery.h * gst/gstquery.c (_gst_query_initialize): Extend GstQuery from GstData, init a memchunk. (standard_definitions): Add a few query types, deprecate a few. (gst_query_get_type): New proc. (_gst_query_copy, _gst_query_free, gst_query_new): GstData implementation. (gst_query_new_application, gst_query_get_structure): New public procs. * docs/design/draft-query.txt: Removed LINKS from the query types, because all the rest can be dispatched to other pads -- seemed ugly to have a query that couldn't be dispatched. internal_links is fine as a pad method. * gst/gstpad.h: Add query2 as a pad method, add the new functions in gstpad.c, but maintain binary compatibility for the moment. Will fix before 0.9 is out. * gst/gstqueryutils.c: * gst/gstqueryutils.h: New files, implement 3 methods for each query type: parse_query, parse_response, and set. Probably need an allocator as well. * gst/gst.h: Add gstquery.h and gstqueryutils.h to the list. * gst/elements/gstfilesink.c (gst_filesink_query2): * gst/base/gstbasesrc.c (gst_basesrc_query2): Replace old query, query_types, and formats methods. * gst/gstpad.c (gst_pad_query2, gst_pad_query2_default) (gst_pad_set_query2_function): New functions. (gst_real_pad_init): Set query2_default as the default query2 function. Basically just dispatches to internally linked pads. Needs review! * gst/gstdata_private.h (_GST_DATA_INIT): Set data->refcount to 1 without using the atomic operations. Only one thread can possibly be accessing the data at this point. Changed so as to avoid gst_atomic operations.
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/* position query */
GstQuery* gst_query_new_position (GstFormat format) G_GNUC_MALLOC;
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void gst_query_set_position (GstQuery *query, GstFormat format, gint64 cur);
void gst_query_parse_position (GstQuery *query, GstFormat *format, gint64 *cur);
/* duration query */
GstQuery* gst_query_new_duration (GstFormat format) G_GNUC_MALLOC;
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void gst_query_set_duration (GstQuery *query, GstFormat format, gint64 duration);
void gst_query_parse_duration (GstQuery *query, GstFormat *format, gint64 *duration);
/* latency query */
GstQuery* gst_query_new_latency (void) G_GNUC_MALLOC;
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void gst_query_set_latency (GstQuery *query, gboolean live, GstClockTime min_latency,
GstClockTime max_latency);
void gst_query_parse_latency (GstQuery *query, gboolean *live, GstClockTime *min_latency,
GstClockTime *max_latency);
/* convert query */
GstQuery* gst_query_new_convert (GstFormat src_format, gint64 value, GstFormat dest_format) G_GNUC_MALLOC;
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void gst_query_set_convert (GstQuery *query, GstFormat src_format, gint64 src_value,
GstFormat dest_format, gint64 dest_value);
void gst_query_parse_convert (GstQuery *query, GstFormat *src_format, gint64 *src_value,
GstFormat *dest_format, gint64 *dest_value);
/* segment query */
GstQuery* gst_query_new_segment (GstFormat format) G_GNUC_MALLOC;
void gst_query_set_segment (GstQuery *query, gdouble rate, GstFormat format,
gint64 start_value, gint64 stop_value);
void gst_query_parse_segment (GstQuery *query, gdouble *rate, GstFormat *format,
gint64 *start_value, gint64 *stop_value);
/* seeking query */
GstQuery* gst_query_new_seeking (GstFormat format) G_GNUC_MALLOC;
gst/base/gstbasesink.*: No need to store the clock, the parent element class already has it. Original commit message from CVS: * gst/base/gstbasesink.c: (gst_base_sink_class_init), (gst_base_sink_wait), (gst_base_sink_do_sync), (gst_base_sink_handle_event): * gst/base/gstbasesink.h: No need to store the clock, the parent element class already has it. * gst/gstbin.c: (gst_bin_set_clock_func), (gst_bin_add_func): Updates for clock_set returning a gboolean * gst/gstclock.c: (gst_clock_entry_new), (gst_clock_id_wait), (gst_clock_id_wait_async), (gst_clock_class_init), (gst_clock_init), (gst_clock_finalize), (gst_clock_get_internal_time), (gst_clock_get_time), (gst_clock_slave_callback), (gst_clock_set_master), (gst_clock_get_master), (do_linear_regression), (gst_clock_add_observation), (gst_clock_set_property), (gst_clock_get_property): * gst/gstclock.h: Implement master/slave. When setting a clock as a slave, a periodic timeout is scheduled to sample master and slave times. Then the slave clock is recalibrated to match offset and rate of the master clock. Update logging a bit. Add flag so that a clock can state that is cannot be slaved to another clock. * gst/gstelement.c: (gst_element_set_clock): * gst/gstelement.h: The set_clock returns a gboolean for when an element cannot deal with the selected clock in the pipeline. * gst/gstpipeline.c: (gst_pipeline_change_state), (gst_pipeline_set_clock): * gst/gstpipeline.h: Handle the case where the selected clock cannot be set on the pipeline. * gst/net/gstnetclientclock.c: (gst_net_client_clock_class_init), (gst_net_client_clock_init), (gst_net_client_clock_finalize), (gst_net_client_clock_set_property), (gst_net_client_clock_get_property), (gst_net_client_clock_observe_times): * gst/net/gstnetclientclock.h: Use regression code in GstClock parent, remove duplicated functionality.
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void gst_query_set_seeking (GstQuery *query, GstFormat format,
gboolean seekable,
gint64 segment_start,
gint64 segment_end);
void gst_query_parse_seeking (GstQuery *query, GstFormat *format,
gboolean *seekable,
gint64 *segment_start,
gint64 *segment_end);
/* formats query */
GstQuery* gst_query_new_formats (void) G_GNUC_MALLOC;
gst/base/gstbasesink.*: No need to store the clock, the parent element class already has it. Original commit message from CVS: * gst/base/gstbasesink.c: (gst_base_sink_class_init), (gst_base_sink_wait), (gst_base_sink_do_sync), (gst_base_sink_handle_event): * gst/base/gstbasesink.h: No need to store the clock, the parent element class already has it. * gst/gstbin.c: (gst_bin_set_clock_func), (gst_bin_add_func): Updates for clock_set returning a gboolean * gst/gstclock.c: (gst_clock_entry_new), (gst_clock_id_wait), (gst_clock_id_wait_async), (gst_clock_class_init), (gst_clock_init), (gst_clock_finalize), (gst_clock_get_internal_time), (gst_clock_get_time), (gst_clock_slave_callback), (gst_clock_set_master), (gst_clock_get_master), (do_linear_regression), (gst_clock_add_observation), (gst_clock_set_property), (gst_clock_get_property): * gst/gstclock.h: Implement master/slave. When setting a clock as a slave, a periodic timeout is scheduled to sample master and slave times. Then the slave clock is recalibrated to match offset and rate of the master clock. Update logging a bit. Add flag so that a clock can state that is cannot be slaved to another clock. * gst/gstelement.c: (gst_element_set_clock): * gst/gstelement.h: The set_clock returns a gboolean for when an element cannot deal with the selected clock in the pipeline. * gst/gstpipeline.c: (gst_pipeline_change_state), (gst_pipeline_set_clock): * gst/gstpipeline.h: Handle the case where the selected clock cannot be set on the pipeline. * gst/net/gstnetclientclock.c: (gst_net_client_clock_class_init), (gst_net_client_clock_init), (gst_net_client_clock_finalize), (gst_net_client_clock_set_property), (gst_net_client_clock_get_property), (gst_net_client_clock_observe_times): * gst/net/gstnetclientclock.h: Use regression code in GstClock parent, remove duplicated functionality.
2005-11-22 18:28:44 +00:00
void gst_query_set_formats (GstQuery *query, gint n_formats, ...);
void gst_query_set_formatsv (GstQuery *query, gint n_formats, const GstFormat *formats);
void gst_query_parse_n_formats (GstQuery *query, guint *n_formats);
void gst_query_parse_nth_format (GstQuery *query, guint nth, GstFormat *format);
/* buffering query */
/**
* GstBufferingMode:
* @GST_BUFFERING_STREAM: a small amount of data is buffered
* @GST_BUFFERING_DOWNLOAD: the stream is being downloaded
* @GST_BUFFERING_TIMESHIFT: the stream is being downloaded in a ringbuffer
* @GST_BUFFERING_LIVE: the stream is a live stream
*
* The different types of buffering methods.
*/
typedef enum {
GST_BUFFERING_STREAM,
GST_BUFFERING_DOWNLOAD,
GST_BUFFERING_TIMESHIFT,
GST_BUFFERING_LIVE
} GstBufferingMode;
GstQuery* gst_query_new_buffering (GstFormat format) G_GNUC_MALLOC;
void gst_query_set_buffering_percent (GstQuery *query, gboolean busy, gint percent);
void gst_query_parse_buffering_percent (GstQuery *query, gboolean *busy, gint *percent);
void gst_query_set_buffering_stats (GstQuery *query, GstBufferingMode mode,
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gint avg_in, gint avg_out,
gint64 buffering_left);
void gst_query_parse_buffering_stats (GstQuery *query, GstBufferingMode *mode,
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gint *avg_in, gint *avg_out,
gint64 *buffering_left);
void gst_query_set_buffering_range (GstQuery *query, GstFormat format,
gint64 start, gint64 stop,
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gint64 estimated_total);
void gst_query_parse_buffering_range (GstQuery *query, GstFormat *format,
gint64 *start, gint64 *stop,
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gint64 *estimated_total);
gboolean gst_query_add_buffering_range (GstQuery *query,
gint64 start, gint64 stop);
guint gst_query_get_n_buffering_ranges (GstQuery *query);
gboolean gst_query_parse_nth_buffering_range (GstQuery *query,
guint index, gint64 *start,
gint64 *stop);
/* URI query */
GstQuery * gst_query_new_uri (void) G_GNUC_MALLOC;
void gst_query_parse_uri (GstQuery *query, gchar **uri);
void gst_query_set_uri (GstQuery *query, const gchar *uri);
/* allocation query */
GstQuery * gst_query_new_allocation (GstCaps *caps, gboolean need_pool) G_GNUC_MALLOC;
void gst_query_parse_allocation (GstQuery *query, GstCaps **caps, gboolean *need_pool);
/* pools */
void gst_query_add_allocation_pool (GstQuery *query, GstBufferPool *pool,
guint size, guint min_buffers,
guint max_buffers);
guint gst_query_get_n_allocation_pools (GstQuery *query);
void gst_query_parse_nth_allocation_pool (GstQuery *query, guint index,
GstBufferPool **pool,
guint *size, guint *min_buffers,
guint *max_buffers);
void gst_query_set_nth_allocation_pool (GstQuery *query, guint index,
GstBufferPool *pool,
guint size, guint min_buffers,
guint max_buffers);
/* allocators */
void gst_query_add_allocation_param (GstQuery *query, GstAllocator *allocator,
const GstAllocationParams *params);
guint gst_query_get_n_allocation_params (GstQuery *query);
void gst_query_parse_nth_allocation_param (GstQuery *query, guint index,
GstAllocator **allocator,
GstAllocationParams *params);
void gst_query_set_nth_allocation_param (GstQuery *query, guint index,
GstAllocator *allocator,
const GstAllocationParams *params);
/* metadata */
void gst_query_add_allocation_meta (GstQuery *query, GType api);
guint gst_query_get_n_allocation_metas (GstQuery *query);
GType gst_query_parse_nth_allocation_meta (GstQuery *query, guint index);
void gst_query_remove_nth_allocation_meta (GstQuery *query, guint index);
gboolean gst_query_has_allocation_meta (GstQuery *query, GType api);
/* scheduling query */
/**
* GstSchedulingFlags:
* @GST_SCHEDULING_FLAG_SEEKABLE: if seeking is possible
* @GST_SCHEDULING_FLAG_SEQUENTIAL: if sequential access is recommended
*
* The different scheduling flags.
*/
typedef enum {
GST_SCHEDULING_FLAG_SEEKABLE = (1 << 0),
GST_SCHEDULING_FLAG_SEQUENTIAL = (1 << 1)
} GstSchedulingFlags;
GstQuery * gst_query_new_scheduling (void) G_GNUC_MALLOC;
void gst_query_set_scheduling (GstQuery *query, GstSchedulingFlags flags,
gint minsize, gint maxsize, gint align);
void gst_query_parse_scheduling (GstQuery *query, GstSchedulingFlags *flags,
gint *minsize, gint *maxsize, gint *align);
void gst_query_add_scheduling_mode (GstQuery *query, GstPadMode mode);
guint gst_query_get_n_scheduling_modes (GstQuery *query);
GstPadMode gst_query_parse_nth_scheduling_mode (GstQuery *query, guint index);
gboolean gst_query_has_scheduling_mode (GstQuery *query, GstPadMode mode);
/* accept-caps query */
GstQuery * gst_query_new_accept_caps (GstCaps *caps) G_GNUC_MALLOC;
void gst_query_parse_accept_caps (GstQuery *query, GstCaps **caps);
void gst_query_set_accept_caps_result (GstQuery *query, gboolean result);
void gst_query_parse_accept_caps_result (GstQuery *query, gboolean *result);
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/* caps query */
GstQuery * gst_query_new_caps (GstCaps *filter) G_GNUC_MALLOC;
void gst_query_parse_caps (GstQuery *query, GstCaps **filter);
void gst_query_set_caps_result (GstQuery *query, GstCaps *caps);
void gst_query_parse_caps_result (GstQuery *query, GstCaps **caps);
void gst_query_intersect_caps_result (GstQuery *query, GstCaps *filter,
GstCapsIntersectMode mode);
/* drain query */
GstQuery * gst_query_new_drain (void) G_GNUC_MALLOC;
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2012-03-14 16:42:56 +00:00
/* TOC query */
GstQuery * gst_query_new_toc (void);
void gst_query_set_toc (GstQuery *query, GstToc *toc, const gchar *extend_uid);
void gst_query_parse_toc (GstQuery *query, GstToc **toc, gchar **extend_uid);
G_END_DECLS
#endif /* __GST_QUERY_H__ */