mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 18:21:04 +00:00
380 lines
15 KiB
C
380 lines
15 KiB
C
/* GStreamer
|
|
* Copyright (C) 2005 Wim Taymans <wim@fluendo.com>
|
|
* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sourceforge.net>
|
|
*
|
|
* gstcollectpads.h:
|
|
*
|
|
* 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_COLLECT_PADS_H__
|
|
#define __GST_COLLECT_PADS_H__
|
|
|
|
#include <gst/gst.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_COLLECT_PADS (gst_collect_pads_get_type())
|
|
#define GST_COLLECT_PADS(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_COLLECT_PADS,GstCollectPads))
|
|
#define GST_COLLECT_PADS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_COLLECT_PADS,GstCollectPadsClass))
|
|
#define GST_COLLECT_PADS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_COLLECT_PADS,GstCollectPadsClass))
|
|
#define GST_IS_COLLECT_PADS(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_COLLECT_PADS))
|
|
#define GST_IS_COLLECT_PADS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_COLLECT_PADS))
|
|
|
|
typedef struct _GstCollectData GstCollectData;
|
|
typedef struct _GstCollectDataPrivate GstCollectDataPrivate;
|
|
typedef struct _GstCollectPads GstCollectPads;
|
|
typedef struct _GstCollectPadsPrivate GstCollectPadsPrivate;
|
|
typedef struct _GstCollectPadsClass GstCollectPadsClass;
|
|
|
|
/**
|
|
* GstCollectDataDestroyNotify:
|
|
* @data: the #GstCollectData that will be freed
|
|
*
|
|
* A function that will be called when the #GstCollectData will be freed.
|
|
* It is passed the pointer to the structure and should free any custom
|
|
* memory and resources allocated for it.
|
|
*/
|
|
typedef void (*GstCollectDataDestroyNotify) (GstCollectData *data);
|
|
|
|
/**
|
|
* GstCollectPadsStateFlags:
|
|
* @GST_COLLECT_PADS_STATE_EOS: Set if collectdata's pad is EOS.
|
|
* @GST_COLLECT_PADS_STATE_FLUSHING: Set if collectdata's pad is flushing.
|
|
* @GST_COLLECT_PADS_STATE_NEW_SEGMENT: Set if collectdata's pad received a
|
|
* new_segment event.
|
|
* @GST_COLLECT_PADS_STATE_WAITING: Set if collectdata's pad must be waited
|
|
* for when collecting.
|
|
* @GST_COLLECT_PADS_STATE_LOCKED: Set collectdata's pad WAITING state must
|
|
* not be changed.
|
|
* #GstCollectPadsStateFlags indicate private state of a collectdata('s pad).
|
|
*/
|
|
typedef enum {
|
|
GST_COLLECT_PADS_STATE_EOS = 1 << 0,
|
|
GST_COLLECT_PADS_STATE_FLUSHING = 1 << 1,
|
|
GST_COLLECT_PADS_STATE_NEW_SEGMENT = 1 << 2,
|
|
GST_COLLECT_PADS_STATE_WAITING = 1 << 3,
|
|
GST_COLLECT_PADS_STATE_LOCKED = 1 << 4
|
|
} GstCollectPadsStateFlags;
|
|
|
|
/**
|
|
* GST_COLLECT_PADS_STATE:
|
|
* @data: a #GstCollectData.
|
|
*
|
|
* A flags word containing #GstCollectPadsStateFlags flags set
|
|
* on this collected pad.
|
|
*/
|
|
#define GST_COLLECT_PADS_STATE(data) (((GstCollectData *) data)->state)
|
|
/**
|
|
* GST_COLLECT_PADS_STATE_IS_SET:
|
|
* @data: a #GstCollectData.
|
|
* @flag: the #GstCollectPadsStateFlags to check.
|
|
*
|
|
* Gives the status of a specific flag on a collected pad.
|
|
*/
|
|
#define GST_COLLECT_PADS_STATE_IS_SET(data,flag) !!(GST_COLLECT_PADS_STATE (data) & flag)
|
|
/**
|
|
* GST_COLLECT_PADS_STATE_SET:
|
|
* @data: a #GstCollectData.
|
|
* @flag: the #GstCollectPadsStateFlags to set.
|
|
*
|
|
* Sets a state flag on a collected pad.
|
|
*/
|
|
#define GST_COLLECT_PADS_STATE_SET(data,flag) (GST_COLLECT_PADS_STATE (data) |= flag)
|
|
/**
|
|
* GST_COLLECT_PADS_STATE_UNSET:
|
|
* @data: a #GstCollectData.
|
|
* @flag: the #GstCollectPadsStateFlags to clear.
|
|
*
|
|
* Clears a state flag on a collected pad.
|
|
*/
|
|
#define GST_COLLECT_PADS_STATE_UNSET(data,flag) (GST_COLLECT_PADS_STATE (data) &= ~(flag))
|
|
|
|
/**
|
|
* GstCollectData:
|
|
* @collect: owner #GstCollectPads
|
|
* @pad: #GstPad managed by this data
|
|
* @buffer: currently queued buffer.
|
|
* @pos: position in the buffer
|
|
* @segment: last segment received.
|
|
*
|
|
* Structure used by the collect_pads.
|
|
*/
|
|
struct _GstCollectData
|
|
{
|
|
/* with STREAM_LOCK of @collect */
|
|
GstCollectPads *collect;
|
|
GstPad *pad;
|
|
GstBuffer *buffer;
|
|
guint pos;
|
|
GstSegment segment;
|
|
|
|
/*< private >*/
|
|
/* state: bitfield for easier extension;
|
|
* eos, flushing, new_segment, waiting */
|
|
GstCollectPadsStateFlags state;
|
|
|
|
GstCollectDataPrivate *priv;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstCollectPadsFunction:
|
|
* @pads: the #GstCollectPads that triggered the callback
|
|
* @user_data: user data passed to gst_collect_pads_set_function()
|
|
*
|
|
* A function that will be called when all pads have received data.
|
|
*
|
|
* Returns: #GST_FLOW_OK for success
|
|
*/
|
|
typedef GstFlowReturn (*GstCollectPadsFunction) (GstCollectPads *pads, gpointer user_data);
|
|
|
|
/**
|
|
* GstCollectPadsBufferFunction:
|
|
* @pads: the #GstCollectPads that triggered the callback
|
|
* @data: the #GstCollectData of pad that has received the buffer
|
|
* @buffer: (transfer full): the #GstBuffer
|
|
* @user_data: user data passed to gst_collect_pads_set_buffer_function()
|
|
*
|
|
* A function that will be called when a (considered oldest) buffer can be muxed.
|
|
* If all pads have reached EOS, this function is called with NULL @buffer
|
|
* and NULL @data.
|
|
*
|
|
* Returns: #GST_FLOW_OK for success
|
|
*/
|
|
typedef GstFlowReturn (*GstCollectPadsBufferFunction) (GstCollectPads *pads, GstCollectData *data,
|
|
GstBuffer *buffer, gpointer user_data);
|
|
|
|
/**
|
|
* GstCollectPadsCompareFunction:
|
|
* @pads: the #GstCollectPads that is comparing the timestamps
|
|
* @data1: the first #GstCollectData
|
|
* @timestamp1: the first timestamp
|
|
* @data2: the second #GstCollectData
|
|
* @timestamp2: the second timestamp
|
|
* @user_data: user data passed to gst_collect_pads_set_compare_function()
|
|
*
|
|
* A function for comparing two timestamps of buffers or newsegments collected on one pad.
|
|
*
|
|
* Returns: Integer less than zero when first timestamp is deemed older than the second one.
|
|
* Zero if the timestamps are deemed equally old.
|
|
* Integer greater than zero when second timestamp is deemed older than the first one.
|
|
*/
|
|
typedef gint (*GstCollectPadsCompareFunction) (GstCollectPads *pads,
|
|
GstCollectData * data1, GstClockTime timestamp1,
|
|
GstCollectData * data2, GstClockTime timestamp2,
|
|
gpointer user_data);
|
|
|
|
/**
|
|
* GstCollectPadsEventFunction:
|
|
* @pads: the #GstCollectPads that triggered the callback
|
|
* @pad: the #GstPad that received an event
|
|
* @event: the #GstEvent received
|
|
* @user_data: user data passed to gst_collect_pads_set_event_function()
|
|
*
|
|
* A function that will be called while processing an event. It takes
|
|
* ownership of the event and is responsible for chaining up (to
|
|
* gst_collect_pads_event_default()) or dropping events (such typical cases
|
|
* being handled by the default handler).
|
|
*
|
|
* Returns: %TRUE if the pad could handle the event
|
|
*/
|
|
typedef gboolean (*GstCollectPadsEventFunction) (GstCollectPads *pads, GstCollectData * pad,
|
|
GstEvent * event, gpointer user_data);
|
|
|
|
|
|
/**
|
|
* GstCollectPadsQueryFunction:
|
|
* @pads: the #GstCollectPads that triggered the callback
|
|
* @pad: the #GstPad that received an event
|
|
* @query: the #GstEvent received
|
|
* @user_data: user data passed to gst_collect_pads_set_query_function()
|
|
*
|
|
* A function that will be called while processing a query. It takes
|
|
* ownership of the query and is responsible for chaining up (to
|
|
* events downstream (with gst_pad_event_default()).
|
|
*
|
|
* Returns: %TRUE if the pad could handle the event
|
|
*/
|
|
typedef gboolean (*GstCollectPadsQueryFunction) (GstCollectPads *pads, GstCollectData * pad,
|
|
GstQuery * query, gpointer user_data);
|
|
|
|
/**
|
|
* GstCollectPadsClipFunction:
|
|
* @pads: a #GstCollectPads
|
|
* @data: a #GstCollectData
|
|
* @inbuffer: (transfer full): the input #GstBuffer
|
|
* @outbuffer: the output #GstBuffer
|
|
* @user_data: user data
|
|
*
|
|
* A function that will be called when @inbuffer is received on the pad managed
|
|
* by @data in the collectpad object @pads.
|
|
*
|
|
* The function should use the segment of @data and the negotiated media type on
|
|
* the pad to perform clipping of @inbuffer.
|
|
*
|
|
* This function takes ownership of @inbuffer and should output a buffer in
|
|
* @outbuffer or return %NULL in @outbuffer if the buffer should be dropped.
|
|
*
|
|
* Returns: a #GstFlowReturn that corresponds to the result of clipping.
|
|
*/
|
|
typedef GstFlowReturn (*GstCollectPadsClipFunction) (GstCollectPads *pads, GstCollectData *data,
|
|
GstBuffer *inbuffer, GstBuffer **outbuffer,
|
|
gpointer user_data);
|
|
|
|
|
|
/**
|
|
* GstCollectPadsFlushFunction:
|
|
* @pads: a #GstCollectPads
|
|
* @user_data: user data
|
|
*
|
|
* A function that will be called while processing a flushing seek event.
|
|
*
|
|
* The function should flush any internal state of the element and the state of
|
|
* all the pads. It should clear only the state not directly managed by the
|
|
* @pads object. It is therefore not necessary to call
|
|
* gst_collect_pads_set_flushing nor gst_collect_pads_clear from this function.
|
|
*
|
|
* Since: 1.4
|
|
*/
|
|
typedef void (*GstCollectPadsFlushFunction) (GstCollectPads *pads, gpointer user_data);
|
|
|
|
/**
|
|
* GST_COLLECT_PADS_GET_STREAM_LOCK:
|
|
* @pads: a #GstCollectPads
|
|
*
|
|
* Get the stream lock of @pads. The stream lock is used to coordinate and
|
|
* serialize execution among the various streams being collected, and in
|
|
* protecting the resources used to accomplish this.
|
|
*/
|
|
#define GST_COLLECT_PADS_GET_STREAM_LOCK(pads) (&((GstCollectPads *)pads)->stream_lock)
|
|
/**
|
|
* GST_COLLECT_PADS_STREAM_LOCK:
|
|
* @pads: a #GstCollectPads
|
|
*
|
|
* Lock the stream lock of @pads.
|
|
*/
|
|
#define GST_COLLECT_PADS_STREAM_LOCK(pads) g_rec_mutex_lock(GST_COLLECT_PADS_GET_STREAM_LOCK (pads))
|
|
/**
|
|
* GST_COLLECT_PADS_STREAM_UNLOCK:
|
|
* @pads: a #GstCollectPads
|
|
*
|
|
* Unlock the stream lock of @pads.
|
|
*/
|
|
#define GST_COLLECT_PADS_STREAM_UNLOCK(pads) g_rec_mutex_unlock(GST_COLLECT_PADS_GET_STREAM_LOCK (pads))
|
|
|
|
/**
|
|
* GstCollectPads:
|
|
* @data: #GList of #GstCollectData managed by this #GstCollectPads.
|
|
*
|
|
* Collectpads object.
|
|
*/
|
|
struct _GstCollectPads {
|
|
GstObject object;
|
|
|
|
/*< public >*/ /* with LOCK and/or STREAM_LOCK */
|
|
GSList *data; /* list of CollectData items */
|
|
|
|
/*< private >*/
|
|
GRecMutex stream_lock; /* used to serialize collection among several streams */
|
|
|
|
GstCollectPadsPrivate *priv;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
struct _GstCollectPadsClass {
|
|
GstObjectClass parent_class;
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GType gst_collect_pads_get_type(void);
|
|
|
|
/* creating the object */
|
|
GstCollectPads* gst_collect_pads_new (void);
|
|
|
|
/* set the callbacks */
|
|
void gst_collect_pads_set_function (GstCollectPads *pads,
|
|
GstCollectPadsFunction func,
|
|
gpointer user_data);
|
|
void gst_collect_pads_set_buffer_function (GstCollectPads *pads,
|
|
GstCollectPadsBufferFunction func,
|
|
gpointer user_data);
|
|
void gst_collect_pads_set_event_function (GstCollectPads *pads,
|
|
GstCollectPadsEventFunction func,
|
|
gpointer user_data);
|
|
void gst_collect_pads_set_query_function (GstCollectPads *pads,
|
|
GstCollectPadsQueryFunction func,
|
|
gpointer user_data);
|
|
void gst_collect_pads_set_compare_function (GstCollectPads *pads,
|
|
GstCollectPadsCompareFunction func,
|
|
gpointer user_data);
|
|
void gst_collect_pads_set_clip_function (GstCollectPads *pads,
|
|
GstCollectPadsClipFunction clipfunc,
|
|
gpointer user_data);
|
|
void gst_collect_pads_set_flush_function (GstCollectPads *pads,
|
|
GstCollectPadsFlushFunction func,
|
|
gpointer user_data);
|
|
|
|
/* pad management */
|
|
GstCollectData* gst_collect_pads_add_pad (GstCollectPads *pads, GstPad *pad, guint size,
|
|
GstCollectDataDestroyNotify destroy_notify,
|
|
gboolean lock);
|
|
gboolean gst_collect_pads_remove_pad (GstCollectPads *pads, GstPad *pad);
|
|
|
|
/* start/stop collection */
|
|
void gst_collect_pads_start (GstCollectPads *pads);
|
|
void gst_collect_pads_stop (GstCollectPads *pads);
|
|
void gst_collect_pads_set_flushing (GstCollectPads *pads, gboolean flushing);
|
|
|
|
/* get collected buffers */
|
|
GstBuffer* gst_collect_pads_peek (GstCollectPads *pads, GstCollectData *data);
|
|
GstBuffer* gst_collect_pads_pop (GstCollectPads *pads, GstCollectData *data);
|
|
|
|
/* get collected bytes */
|
|
guint gst_collect_pads_available (GstCollectPads *pads);
|
|
guint gst_collect_pads_flush (GstCollectPads *pads, GstCollectData *data,
|
|
guint size);
|
|
GstBuffer* gst_collect_pads_read_buffer (GstCollectPads * pads, GstCollectData * data,
|
|
guint size);
|
|
GstBuffer* gst_collect_pads_take_buffer (GstCollectPads * pads, GstCollectData * data,
|
|
guint size);
|
|
|
|
/* setting and unsetting waiting mode */
|
|
void gst_collect_pads_set_waiting (GstCollectPads *pads, GstCollectData *data,
|
|
gboolean waiting);
|
|
|
|
/* convenience helper */
|
|
GstFlowReturn gst_collect_pads_clip_running_time (GstCollectPads * pads,
|
|
GstCollectData * cdata,
|
|
GstBuffer * buf, GstBuffer ** outbuf,
|
|
gpointer user_data);
|
|
|
|
/* default handlers */
|
|
gboolean gst_collect_pads_event_default (GstCollectPads * pads, GstCollectData * data,
|
|
GstEvent * event, gboolean discard);
|
|
gboolean gst_collect_pads_src_event_default (GstCollectPads * pads, GstPad * pad,
|
|
GstEvent * event);
|
|
gboolean gst_collect_pads_query_default (GstCollectPads * pads, GstCollectData * data,
|
|
GstQuery * query, gboolean discard);
|
|
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_COLLECT_PADS_H__ */
|