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gstreamer/libs/gst/base/gstcollectpads2.h
Sebastian Dröge 753a1125dd Merge branch 'master' into 0.11 
Conflicts:
	libs/gst/base/gstcollectpads2.c
	libs/gst/base/gstcollectpads2.h
2012-01-27 15:09:35 +01:00

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/* GStreamer
* Copyright (C) 2005 Wim Taymans <wim@fluendo.com>
* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sourceforge.net>
*
* gstcollectpads2.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_COLLECT_PADS2_H__
#define __GST_COLLECT_PADS2_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_COLLECT_PADS2 (gst_collect_pads2_get_type())
#define GST_COLLECT_PADS2(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_COLLECT_PADS2,GstCollectPads2))
#define GST_COLLECT_PADS2_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_COLLECT_PADS2,GstCollectPads2Class))
#define GST_COLLECT_PADS2_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_COLLECT_PADS2,GstCollectPads2Class))
#define GST_IS_COLLECT_PADS2(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_COLLECT_PADS2))
#define GST_IS_COLLECT_PADS2_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_COLLECT_PADS2))
typedef struct _GstCollectData2 GstCollectData2;
typedef struct _GstCollectData2Private GstCollectData2Private;
typedef struct _GstCollectPads2 GstCollectPads2;
typedef struct _GstCollectPads2Private GstCollectPads2Private;
typedef struct _GstCollectPads2Class GstCollectPads2Class;
/**
* GstCollectData2DestroyNotify:
* @data: the #GstCollectData2 that will be freed
*
* A function that will be called when the #GstCollectData2 will be freed.
* It is passed the pointer to the structure and should free any custom
* memory and resources allocated for it.
*
* Since: 0.10.36
*/
typedef void (*GstCollectData2DestroyNotify) (GstCollectData2 *data);
/**
* GstCollectPads2StateFlags:
* @GST_COLLECT_PADS2_STATE_EOS: Set if collectdata's pad is EOS.
* @GST_COLLECT_PADS2_STATE_FLUSHING: Set if collectdata's pad is flushing.
* @GST_COLLECT_PADS2_STATE_NEW_SEGMENT: Set if collectdata's pad received a
* new_segment event.
* @GST_COLLECT_PADS2_STATE_WAITING: Set if collectdata's pad must be waited
* for when collecting.
* @GST_COLLECT_PADS2_STATE_LOCKED: Set collectdata's pad WAITING state must
* not be changed.
* #GstCollectPads2StateFlags indicate private state of a collectdata('s pad).
*
* Since: 0.10.36
*/
typedef enum {
GST_COLLECT_PADS2_STATE_EOS = 1 << 0,
GST_COLLECT_PADS2_STATE_FLUSHING = 1 << 1,
GST_COLLECT_PADS2_STATE_NEW_SEGMENT = 1 << 2,
GST_COLLECT_PADS2_STATE_WAITING = 1 << 3,
GST_COLLECT_PADS2_STATE_LOCKED = 1 << 4
} GstCollectPads2StateFlags;
/**
* GST_COLLECT_PADS2_STATE:
* @data: a #GstCollectData2.
*
* A flags word containing #GstCollectPads2StateFlags flags set
* on this collected pad.
*
* Since: 0.10.36
*/
#define GST_COLLECT_PADS2_STATE(data) (((GstCollectData2 *) data)->state)
/**
* GST_COLLECT_PADS2_STATE_IS_SET:
* @data: a #GstCollectData2.
* @flag: the #GstCollectPads2StateFlags to check.
*
* Gives the status of a specific flag on a collected pad.
*
* Since: 0.10.36
*/
#define GST_COLLECT_PADS2_STATE_IS_SET(data,flag) !!(GST_COLLECT_PADS2_STATE (data) & flag)
/**
* GST_COLLECT_PADS2_STATE_SET:
* @data: a #GstCollectData2.
* @flag: the #GstCollectPads2StateFlags to set.
*
* Sets a state flag on a collected pad.
*
* Since: 0.10.36
*/
#define GST_COLLECT_PADS2_STATE_SET(data,flag) (GST_COLLECT_PADS2_STATE (data) |= flag)
/**
* GST_COLLECT_PADS2_STATE_UNSET:
* @data: a #GstCollectData2.
* @flag: the #GstCollectPads2StateFlags to clear.
*
* Clears a state flag on a collected pad.
*
* Since: 0.10.36
*/
#define GST_COLLECT_PADS2_STATE_UNSET(data,flag) (GST_COLLECT_PADS2_STATE (data) &= ~(flag))
/**
* GstCollectData2:
* @collect: owner #GstCollectPads2
* @pad: #GstPad managed by this data
* @buffer: currently queued buffer.
* @pos: position in the buffer
* @segment: last segment received.
*
* Structure used by the collect_pads2.
*
* Since: 0.10.36
*/
struct _GstCollectData2
{
/* with STREAM_LOCK of @collect */
GstCollectPads2 *collect;
GstPad *pad;
GstBuffer *buffer;
guint pos;
GstSegment segment;
/*< private >*/
/* state: bitfield for easier extension;
* eos, flushing, new_segment, waiting */
GstCollectPads2StateFlags state;
GstCollectData2Private *priv;
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstCollectPads2Function:
* @pads: the #GstCollectPads2 that trigered the callback
* @user_data: user data passed to gst_collect_pads2_set_function()
*
* A function that will be called when all pads have received data.
*
* Returns: #GST_FLOW_OK for success
*
* Since: 0.10.36
*/
typedef GstFlowReturn (*GstCollectPads2Function) (GstCollectPads2 *pads, gpointer user_data);
/**
* GstCollectPads2BufferFunction:
* @pads: the #GstCollectPads2 that trigered the callback
* @data: the #GstCollectData2 of pad that has received the buffer
* @buffer: the #GstBuffer
* @user_data: user data passed to gst_collect_pads2_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
*
* Since: 0.10.36
*/
typedef GstFlowReturn (*GstCollectPads2BufferFunction) (GstCollectPads2 *pads, GstCollectData2 *data,
GstBuffer *buffer, gpointer user_data);
/**
* GstCollectPads2CompareFunction:
* @pads: the #GstCollectPads that is comparing the timestamps
* @data1: the first #GstCollectData2
* @timestamp1: the first timestamp
* @data2: the second #GstCollectData2
* @timestamp2: the second timestamp
* @user_data: user data passed to gst_collect_pads2_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 greate than zero when second timestamp is deemed older than the first one.
*
* Since: 0.10.36
*/
typedef gint (*GstCollectPads2CompareFunction) (GstCollectPads2 *pads,
GstCollectData2 * data1, GstClockTime timestamp1,
GstCollectData2 * data2, GstClockTime timestamp2,
gpointer user_data);
/**
* GstCollectPads2EventFunction:
* @pads: the #GstCollectPads2 that trigered the callback
* @pad: the #GstPad that received an event
* @event: the #GstEvent received
* @user_data: user data passed to gst_collect_pads2_set_event_function()
*
* A function that will be called while processing an event. It takes
* ownership of the event and is responsible for forwarding
* events downstream (with gst_pad_event_default()) or dropping events.
*
* The STREAM_START, CAPS, STREAM_CONFIG, SEGMENT and EOS events should
* usually be dropped by this function.
*
* Returns: %TRUE if the pad could handle the event
*
* Since: 0.10.36
*/
typedef gboolean (*GstCollectPads2EventFunction) (GstCollectPads2 *pads, GstCollectData2 * pad,
GstEvent * event, gpointer user_data);
/**
* GstCollectPads2ClipFunction:
* @pads: a #GstCollectPads2
* @data: a #GstCollectData2
* @inbuffer: 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 collecpad 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.
*
* Since: 0.10.36
*/
typedef GstFlowReturn (*GstCollectPads2ClipFunction) (GstCollectPads2 *pads, GstCollectData2 *data,
GstBuffer *inbuffer, GstBuffer **outbuffer,
gpointer user_data);
/**
* GST_COLLECT_PADS2_GET_STREAM_LOCK:
* @pads: a #GstCollectPads2
*
* 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.
*
* Since: 0.10.36
*/
#define GST_COLLECT_PADS2_GET_STREAM_LOCK(pads) (&((GstCollectPads2 *)pads)->stream_lock)
/**
* GST_COLLECT_PADS2_STREAM_LOCK:
* @pads: a #GstCollectPads2
*
* Lock the stream lock of @pads.
*
* Since: 0.10.36
*/
#define GST_COLLECT_PADS2_STREAM_LOCK(pads) (g_rec_mutex_lock(GST_COLLECT_PADS2_GET_STREAM_LOCK (pads)))
/**
* GST_COLLECT_PADS2_STREAM_UNLOCK:
* @pads: a #GstCollectPads2
*
* Unlock the stream lock of @pads.
*
* Since: 0.10.36
*/
#define GST_COLLECT_PADS2_STREAM_UNLOCK(pads) (g_rec_mutex_unlock(GST_COLLECT_PADS2_GET_STREAM_LOCK (pads)))
/**
* GstCollectPads2:
* @data: #GList of #GstCollectData2 managed by this #GstCollectPads2.
*
* Collectpads object.
*
* Since: 0.10.36
*/
struct _GstCollectPads2 {
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 */
GstCollectPads2Private *priv;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstCollectPads2Class {
GstObjectClass parent_class;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GType gst_collect_pads2_get_type(void);
/* creating the object */
GstCollectPads2* gst_collect_pads2_new (void);
/* set the callbacks */
void gst_collect_pads2_set_function (GstCollectPads2 *pads,
GstCollectPads2Function func,
gpointer user_data);
void gst_collect_pads2_set_buffer_function (GstCollectPads2 *pads,
GstCollectPads2BufferFunction func,
gpointer user_data);
void gst_collect_pads2_set_event_function (GstCollectPads2 *pads,
GstCollectPads2EventFunction func,
gpointer user_data);
void gst_collect_pads2_set_compare_function (GstCollectPads2 *pads,
GstCollectPads2CompareFunction func,
gpointer user_data);
void gst_collect_pads2_set_clip_function (GstCollectPads2 *pads,
GstCollectPads2ClipFunction clipfunc,
gpointer user_data);
/* pad management */
GstCollectData2* gst_collect_pads2_add_pad (GstCollectPads2 *pads, GstPad *pad, guint size);
GstCollectData2* gst_collect_pads2_add_pad_full (GstCollectPads2 *pads, GstPad *pad, guint size,
GstCollectData2DestroyNotify destroy_notify,
gboolean lock);
gboolean gst_collect_pads2_remove_pad (GstCollectPads2 *pads, GstPad *pad);
gboolean gst_collect_pads2_is_active (GstCollectPads2 *pads, GstPad *pad);
/* start/stop collection */
GstFlowReturn gst_collect_pads2_collect (GstCollectPads2 *pads);
GstFlowReturn gst_collect_pads2_collect_range (GstCollectPads2 *pads, guint64 offset, guint length);
void gst_collect_pads2_start (GstCollectPads2 *pads);
void gst_collect_pads2_stop (GstCollectPads2 *pads);
void gst_collect_pads2_set_flushing (GstCollectPads2 *pads, gboolean flushing);
/* get collected buffers */
GstBuffer* gst_collect_pads2_peek (GstCollectPads2 *pads, GstCollectData2 *data);
GstBuffer* gst_collect_pads2_pop (GstCollectPads2 *pads, GstCollectData2 *data);
/* get collected bytes */
guint gst_collect_pads2_available (GstCollectPads2 *pads);
guint gst_collect_pads2_flush (GstCollectPads2 *pads, GstCollectData2 *data,
guint size);
GstBuffer* gst_collect_pads2_read_buffer (GstCollectPads2 * pads, GstCollectData2 * data,
guint size);
GstBuffer* gst_collect_pads2_take_buffer (GstCollectPads2 * pads, GstCollectData2 * data,
guint size);
/* setting and unsetting waiting mode */
void gst_collect_pads2_set_waiting (GstCollectPads2 *pads, GstCollectData2 *data,
gboolean waiting);
/* convenience helper */
GstFlowReturn gst_collect_pads2_clip_running_time (GstCollectPads2 * pads,
GstCollectData2 * cdata, GstBuffer * buf, GstBuffer ** outbuf,
gpointer user_data);
G_END_DECLS
#endif /* __GST_COLLECT_PADS22_H__ */
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