| /* 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| |
| #ifndef __GST_QUERY_H__ |
| #define __GST_QUERY_H__ |
| |
| #include <glib.h> |
| #include <glib-object.h> |
| #include <gst/gstconfig.h> |
| |
| G_BEGIN_DECLS |
| |
| typedef struct _GstQuery GstQuery; |
| |
| #include <gst/gstminiobject.h> |
| |
| /** |
| * 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: (value 3) (type GstQueryTypeFlags) |
| * |
| * The same thing as #GST_QUERY_TYPE_UPSTREAM | #GST_QUERY_TYPE_DOWNSTREAM. |
| */ |
| #define GST_QUERY_TYPE_BOTH \ |
| ((GstQueryTypeFlags)(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. |
| * @GST_QUERY_CUSTOM: a custom application or element defined query. |
| * @GST_QUERY_URI: query the URI of the source or sink. |
| * @GST_QUERY_ALLOCATION: the buffer allocation properties |
| * @GST_QUERY_SCHEDULING: the scheduling properties |
| * @GST_QUERY_ACCEPT_CAPS: the accept caps query |
| * @GST_QUERY_CAPS: the caps query |
| * @GST_QUERY_DRAIN: wait till all serialized data is consumed downstream |
| * @GST_QUERY_CONTEXT: query the pipeline-local context from |
| * downstream or upstream (since 1.2) |
| * |
| * 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_CONTEXT = GST_QUERY_MAKE_TYPE (190, FLAG(BOTH)) |
| } GstQueryType; |
| #undef FLAG |
| |
| GST_API GType _gst_query_type; |
| |
| #define GST_TYPE_QUERY (_gst_query_type) |
| #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_QUERY_TYPE: |
| * @query: the query to query |
| * |
| * Get the #GstQueryType of the query. |
| */ |
| #define GST_QUERY_TYPE(query) (((GstQuery*)(query))->type) |
| |
| /** |
| * GST_QUERY_TYPE_NAME: |
| * @query: the query to query |
| * |
| * Get a constant string representation of the #GstQueryType of the query. |
| */ |
| #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. |
| */ |
| struct _GstQuery |
| { |
| GstMiniObject mini_object; |
| |
| /*< public > *//* with COW */ |
| GstQueryType type; |
| }; |
| |
| /** |
| * 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; |
| |
| #include <gst/gstiterator.h> |
| #include <gst/gststructure.h> |
| #include <gst/gstformat.h> |
| #include <gst/gstpad.h> |
| #include <gst/gstallocator.h> |
| #include <gst/gsttoc.h> |
| #include <gst/gstcontext.h> |
| |
| GST_API |
| const gchar* gst_query_type_get_name (GstQueryType type); |
| |
| GST_API |
| GQuark gst_query_type_to_quark (GstQueryType type); |
| |
| GST_API |
| GstQueryTypeFlags |
| gst_query_type_get_flags (GstQueryType type); |
| |
| |
| GST_API |
| GType gst_query_get_type (void); |
| |
| /* refcounting */ |
| /** |
| * gst_query_ref: |
| * @q: a #GstQuery to increase the refcount of. |
| * |
| * Increases the refcount of the given query by one. |
| * |
| * Returns: @q |
| */ |
| 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. |
| */ |
| static inline void |
| gst_query_unref (GstQuery * q) |
| { |
| gst_mini_object_unref (GST_MINI_OBJECT_CAST (q)); |
| } |
| |
| /* 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. |
| */ |
| 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) (nullable): 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. |
| * |
| * Returns: %TRUE if @new_query was different from @old_query |
| */ |
| 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 */ |
| |
| GST_API |
| GstQuery * gst_query_new_custom (GstQueryType type, GstStructure *structure) G_GNUC_MALLOC; |
| |
| GST_API |
| const GstStructure * |
| gst_query_get_structure (GstQuery *query); |
| |
| GST_API |
| GstStructure * gst_query_writable_structure (GstQuery *query); |
| |
| /* position query */ |
| |
| GST_API |
| GstQuery* gst_query_new_position (GstFormat format) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_position (GstQuery *query, GstFormat format, gint64 cur); |
| |
| GST_API |
| void gst_query_parse_position (GstQuery *query, GstFormat *format, gint64 *cur); |
| |
| /* duration query */ |
| |
| GST_API |
| GstQuery* gst_query_new_duration (GstFormat format) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_duration (GstQuery *query, GstFormat format, gint64 duration); |
| |
| GST_API |
| void gst_query_parse_duration (GstQuery *query, GstFormat *format, gint64 *duration); |
| |
| /* latency query */ |
| |
| GST_API |
| GstQuery* gst_query_new_latency (void) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_latency (GstQuery *query, gboolean live, GstClockTime min_latency, |
| GstClockTime max_latency); |
| |
| GST_API |
| void gst_query_parse_latency (GstQuery *query, gboolean *live, GstClockTime *min_latency, |
| GstClockTime *max_latency); |
| |
| /* convert query */ |
| |
| GST_API |
| GstQuery* gst_query_new_convert (GstFormat src_format, gint64 value, GstFormat dest_format) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_convert (GstQuery *query, GstFormat src_format, gint64 src_value, |
| GstFormat dest_format, gint64 dest_value); |
| |
| GST_API |
| void gst_query_parse_convert (GstQuery *query, GstFormat *src_format, gint64 *src_value, |
| GstFormat *dest_format, gint64 *dest_value); |
| /* segment query */ |
| |
| GST_API |
| GstQuery* gst_query_new_segment (GstFormat format) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_segment (GstQuery *query, gdouble rate, GstFormat format, |
| gint64 start_value, gint64 stop_value); |
| |
| GST_API |
| void gst_query_parse_segment (GstQuery *query, gdouble *rate, GstFormat *format, |
| gint64 *start_value, gint64 *stop_value); |
| |
| /* seeking query */ |
| |
| GST_API |
| GstQuery* gst_query_new_seeking (GstFormat format) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_seeking (GstQuery *query, GstFormat format, |
| gboolean seekable, |
| gint64 segment_start, |
| gint64 segment_end); |
| |
| GST_API |
| void gst_query_parse_seeking (GstQuery *query, GstFormat *format, |
| gboolean *seekable, |
| gint64 *segment_start, |
| gint64 *segment_end); |
| /* formats query */ |
| |
| GST_API |
| GstQuery* gst_query_new_formats (void) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_formats (GstQuery *query, gint n_formats, ...); |
| |
| GST_API |
| void gst_query_set_formatsv (GstQuery *query, gint n_formats, const GstFormat *formats); |
| |
| GST_API |
| void gst_query_parse_n_formats (GstQuery *query, guint *n_formats); |
| |
| GST_API |
| void gst_query_parse_nth_format (GstQuery *query, guint nth, GstFormat *format); |
| |
| /* buffering query */ |
| |
| GST_API |
| GstQuery* gst_query_new_buffering (GstFormat format) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_buffering_percent (GstQuery *query, gboolean busy, gint percent); |
| |
| GST_API |
| void gst_query_parse_buffering_percent (GstQuery *query, gboolean *busy, gint *percent); |
| |
| GST_API |
| void gst_query_set_buffering_stats (GstQuery *query, GstBufferingMode mode, |
| gint avg_in, gint avg_out, |
| gint64 buffering_left); |
| |
| GST_API |
| void gst_query_parse_buffering_stats (GstQuery *query, GstBufferingMode *mode, |
| gint *avg_in, gint *avg_out, |
| gint64 *buffering_left); |
| |
| GST_API |
| void gst_query_set_buffering_range (GstQuery *query, GstFormat format, |
| gint64 start, gint64 stop, |
| gint64 estimated_total); |
| |
| GST_API |
| void gst_query_parse_buffering_range (GstQuery *query, GstFormat *format, |
| gint64 *start, gint64 *stop, |
| gint64 *estimated_total); |
| |
| GST_API |
| gboolean gst_query_add_buffering_range (GstQuery *query, |
| gint64 start, gint64 stop); |
| |
| GST_API |
| guint gst_query_get_n_buffering_ranges (GstQuery *query); |
| |
| GST_API |
| gboolean gst_query_parse_nth_buffering_range (GstQuery *query, |
| guint index, gint64 *start, |
| gint64 *stop); |
| |
| /* URI query */ |
| |
| GST_API |
| GstQuery * gst_query_new_uri (void) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_parse_uri (GstQuery *query, gchar **uri); |
| |
| GST_API |
| void gst_query_set_uri (GstQuery *query, const gchar *uri); |
| |
| GST_API |
| void gst_query_parse_uri_redirection (GstQuery *query, gchar **uri); |
| |
| GST_API |
| void gst_query_set_uri_redirection (GstQuery *query, const gchar *uri); |
| |
| GST_API |
| void gst_query_parse_uri_redirection_permanent (GstQuery *query, gboolean * permanent); |
| |
| GST_API |
| void gst_query_set_uri_redirection_permanent (GstQuery *query, gboolean permanent); |
| |
| /* allocation query */ |
| |
| GST_API |
| GstQuery * gst_query_new_allocation (GstCaps *caps, gboolean need_pool) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_parse_allocation (GstQuery *query, GstCaps **caps, gboolean *need_pool); |
| |
| /* pools */ |
| |
| GST_API |
| void gst_query_add_allocation_pool (GstQuery *query, GstBufferPool *pool, |
| guint size, guint min_buffers, |
| guint max_buffers); |
| |
| GST_API |
| guint gst_query_get_n_allocation_pools (GstQuery *query); |
| |
| GST_API |
| void gst_query_parse_nth_allocation_pool (GstQuery *query, guint index, |
| GstBufferPool **pool, |
| guint *size, guint *min_buffers, |
| guint *max_buffers); |
| |
| GST_API |
| void gst_query_set_nth_allocation_pool (GstQuery *query, guint index, |
| GstBufferPool *pool, |
| guint size, guint min_buffers, |
| guint max_buffers); |
| |
| GST_API |
| void gst_query_remove_nth_allocation_pool (GstQuery *query, guint index); |
| |
| /* allocators */ |
| |
| GST_API |
| void gst_query_add_allocation_param (GstQuery *query, GstAllocator *allocator, |
| const GstAllocationParams *params); |
| |
| GST_API |
| guint gst_query_get_n_allocation_params (GstQuery *query); |
| |
| GST_API |
| void gst_query_parse_nth_allocation_param (GstQuery *query, guint index, |
| GstAllocator **allocator, |
| GstAllocationParams *params); |
| |
| GST_API |
| void gst_query_set_nth_allocation_param (GstQuery *query, guint index, |
| GstAllocator *allocator, |
| const GstAllocationParams *params); |
| |
| GST_API |
| void gst_query_remove_nth_allocation_param (GstQuery *query, guint index); |
| |
| /* metadata */ |
| |
| GST_API |
| void gst_query_add_allocation_meta (GstQuery *query, GType api, const GstStructure *params); |
| |
| GST_API |
| guint gst_query_get_n_allocation_metas (GstQuery *query); |
| |
| GST_API |
| GType gst_query_parse_nth_allocation_meta (GstQuery *query, guint index, |
| const GstStructure **params); |
| |
| GST_API |
| void gst_query_remove_nth_allocation_meta (GstQuery *query, guint index); |
| |
| GST_API |
| gboolean gst_query_find_allocation_meta (GstQuery *query, GType api, guint *index); |
| |
| |
| /* scheduling query */ |
| /** |
| * GstSchedulingFlags: |
| * @GST_SCHEDULING_FLAG_SEEKABLE: if seeking is possible |
| * @GST_SCHEDULING_FLAG_SEQUENTIAL: if sequential access is recommended |
| * @GST_SCHEDULING_FLAG_BANDWIDTH_LIMITED: if bandwidth is limited and buffering possible (since 1.2) |
| * |
| * The different scheduling flags. |
| */ |
| typedef enum { |
| GST_SCHEDULING_FLAG_SEEKABLE = (1 << 0), |
| GST_SCHEDULING_FLAG_SEQUENTIAL = (1 << 1), |
| GST_SCHEDULING_FLAG_BANDWIDTH_LIMITED = (1 << 2) |
| } GstSchedulingFlags; |
| |
| GST_API |
| GstQuery * gst_query_new_scheduling (void) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_set_scheduling (GstQuery *query, GstSchedulingFlags flags, |
| gint minsize, gint maxsize, gint align); |
| |
| GST_API |
| void gst_query_parse_scheduling (GstQuery *query, GstSchedulingFlags *flags, |
| gint *minsize, gint *maxsize, gint *align); |
| |
| GST_API |
| void gst_query_add_scheduling_mode (GstQuery *query, GstPadMode mode); |
| |
| GST_API |
| guint gst_query_get_n_scheduling_modes (GstQuery *query); |
| |
| GST_API |
| GstPadMode gst_query_parse_nth_scheduling_mode (GstQuery *query, guint index); |
| |
| GST_API |
| gboolean gst_query_has_scheduling_mode (GstQuery *query, GstPadMode mode); |
| |
| GST_API |
| gboolean gst_query_has_scheduling_mode_with_flags (GstQuery * query, GstPadMode mode, |
| GstSchedulingFlags flags); |
| |
| /* accept-caps query */ |
| |
| GST_API |
| GstQuery * gst_query_new_accept_caps (GstCaps *caps) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_parse_accept_caps (GstQuery *query, GstCaps **caps); |
| |
| GST_API |
| void gst_query_set_accept_caps_result (GstQuery *query, gboolean result); |
| |
| GST_API |
| void gst_query_parse_accept_caps_result (GstQuery *query, gboolean *result); |
| |
| /* caps query */ |
| |
| GST_API |
| GstQuery * gst_query_new_caps (GstCaps *filter) G_GNUC_MALLOC; |
| |
| GST_API |
| void gst_query_parse_caps (GstQuery *query, GstCaps **filter); |
| |
| GST_API |
| void gst_query_set_caps_result (GstQuery *query, GstCaps *caps); |
| |
| GST_API |
| void gst_query_parse_caps_result (GstQuery *query, GstCaps **caps); |
| |
| /* drain query */ |
| |
| GST_API |
| GstQuery * gst_query_new_drain (void) G_GNUC_MALLOC; |
| |
| /* context query */ |
| |
| GST_API |
| GstQuery * gst_query_new_context (const gchar * context_type) G_GNUC_MALLOC; |
| |
| GST_API |
| gboolean gst_query_parse_context_type (GstQuery * query, const gchar ** context_type); |
| |
| GST_API |
| void gst_query_set_context (GstQuery *query, GstContext *context); |
| |
| GST_API |
| void gst_query_parse_context (GstQuery *query, GstContext **context); |
| |
| #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC |
| G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstQuery, gst_query_unref) |
| #endif |
| |
| G_END_DECLS |
| |
| #endif /* __GST_QUERY_H__ */ |
| |
