| gstelement.h | gstelement.h | |||
|---|---|---|---|---|
| skipping to change at line 33 | skipping to change at line 33 | |||
| #ifndef __GST_ELEMENT_H__ | #ifndef __GST_ELEMENT_H__ | |||
| #define __GST_ELEMENT_H__ | #define __GST_ELEMENT_H__ | |||
| /* gstelement.h and gstelementfactory.h include eachother */ | /* gstelement.h and gstelementfactory.h include eachother */ | |||
| typedef struct _GstElement GstElement; | typedef struct _GstElement GstElement; | |||
| typedef struct _GstElementClass GstElementClass; | typedef struct _GstElementClass GstElementClass; | |||
| /* gstmessage.h needs State */ | /* gstmessage.h needs State */ | |||
| /** | /** | |||
| * GstState: | * GstState: | |||
| * @GST_STATE_VOID_PENDING : no pending state. | * @GST_STATE_VOID_PENDING: no pending state. | |||
| * @GST_STATE_NULL : the NULL state or initial state of an elem | * @GST_STATE_NULL : the NULL state or initial state of an element. | |||
| ent | * @GST_STATE_READY : the element is ready to go to PAUSED. | |||
| * @GST_STATE_READY : the element is ready to go to PAUSED | * @GST_STATE_PAUSED : the element is PAUSED, it is ready to accept an | |||
| * @GST_STATE_PAUSED : the element is PAUSED | d | |||
| * @GST_STATE_PLAYING : the element is PLAYING | * process data. Sink elements however only accept | |||
| one | ||||
| * buffer and then block. | ||||
| * @GST_STATE_PLAYING : the element is PLAYING, the #GstClock is runnin | ||||
| g and | ||||
| * the data is flowing. | ||||
| * | * | |||
| * The posible states an element can be in. | * The possible states an element can be in. States can be changed using | |||
| * gst_element_set_state() and checked using gst_element_get_state(). | ||||
| */ | */ | |||
| typedef enum { | typedef enum { | |||
| GST_STATE_VOID_PENDING = 0, | GST_STATE_VOID_PENDING = 0, | |||
| GST_STATE_NULL = 1, | GST_STATE_NULL = 1, | |||
| GST_STATE_READY = 2, | GST_STATE_READY = 2, | |||
| GST_STATE_PAUSED = 3, | GST_STATE_PAUSED = 3, | |||
| GST_STATE_PLAYING = 4 | GST_STATE_PLAYING = 4 | |||
| } GstState; | } GstState; | |||
| #include <gst/gstconfig.h> | #include <gst/gstconfig.h> | |||
| skipping to change at line 65 | skipping to change at line 69 | |||
| #include <gst/gstplugin.h> | #include <gst/gstplugin.h> | |||
| #include <gst/gstpluginfeature.h> | #include <gst/gstpluginfeature.h> | |||
| #include <gst/gstindex.h> | #include <gst/gstindex.h> | |||
| #include <gst/gstindexfactory.h> | #include <gst/gstindexfactory.h> | |||
| #include <gst/gstiterator.h> | #include <gst/gstiterator.h> | |||
| #include <gst/gstmessage.h> | #include <gst/gstmessage.h> | |||
| #include <gst/gsttaglist.h> | #include <gst/gsttaglist.h> | |||
| G_BEGIN_DECLS | G_BEGIN_DECLS | |||
| #define GST_TYPE_ELEMENT (gst_element_get_type ()) | #define GST_TYPE_ELEMENT (gst_element_get_type ()) | |||
| #define GST_IS_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), | #define GST_IS_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), | |||
| GST_TYPE_ELEMENT)) | GST_TYPE_ELEMENT)) | |||
| #define GST_IS_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), G | #define GST_IS_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), | |||
| ST_TYPE_ELEMENT)) | GST_TYPE_ELEMENT)) | |||
| #define GST_ELEMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), G | #define GST_ELEMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), | |||
| ST_TYPE_ELEMENT, GstElementClass)) | GST_TYPE_ELEMENT, GstElementClass)) | |||
| #define GST_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), | #define GST_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), | |||
| GST_TYPE_ELEMENT, GstElement)) | GST_TYPE_ELEMENT, GstElement)) | |||
| #define GST_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), G | #define GST_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), | |||
| ST_TYPE_ELEMENT, GstElementClass)) | GST_TYPE_ELEMENT, GstElementClass)) | |||
| #define GST_ELEMENT_CAST(obj) ((GstElement*)(obj)) | #define GST_ELEMENT_CAST(obj) ((GstElement*)(obj)) | |||
| /** | /** | |||
| * GstStateChangeReturn: | * GstStateChangeReturn: | |||
| * @GST_STATE_CHANGE_FAILURE : the state change failed | * @GST_STATE_CHANGE_FAILURE : the state change failed | |||
| * @GST_STATE_CHANGE_SUCCESS : the state change succeeded | * @GST_STATE_CHANGE_SUCCESS : the state change succeeded | |||
| * @GST_STATE_CHANGE_ASYNC : the state change will happen asynchronousl y | * @GST_STATE_CHANGE_ASYNC : the state change will happen asynchronousl y | |||
| * @GST_STATE_CHANGE_NO_PREROLL: the state change succeeded but the element | * @GST_STATE_CHANGE_NO_PREROLL: the state change succeeded but the element | |||
| * cannot produce data in PAUSED. This typica | * cannot produce data in %GST_STATE_PAUSED. | |||
| lly | * This typically happens with live sources. | |||
| * happens with live sources. | ||||
| * | * | |||
| * The possible return values from a state change function. Only | * The possible return values from a state change function. Only | |||
| * @GST_STATE_CHANGE_FAILURE is a real failure. | * @GST_STATE_CHANGE_FAILURE is a real failure. | |||
| */ | */ | |||
| typedef enum { | typedef enum { | |||
| GST_STATE_CHANGE_FAILURE = 0, | GST_STATE_CHANGE_FAILURE = 0, | |||
| GST_STATE_CHANGE_SUCCESS = 1, | GST_STATE_CHANGE_SUCCESS = 1, | |||
| GST_STATE_CHANGE_ASYNC = 2, | GST_STATE_CHANGE_ASYNC = 2, | |||
| GST_STATE_CHANGE_NO_PREROLL = 3 | GST_STATE_CHANGE_NO_PREROLL = 3 | |||
| } GstStateChangeReturn; | } GstStateChangeReturn; | |||
| skipping to change at line 102 | skipping to change at line 106 | |||
| /* NOTE: this probably should be done with an #ifdef to decide | /* NOTE: this probably should be done with an #ifdef to decide | |||
| * whether to safe-cast or to just do the non-checking cast. | * whether to safe-cast or to just do the non-checking cast. | |||
| */ | */ | |||
| /** | /** | |||
| * GST_STATE: | * GST_STATE: | |||
| * @elem: a #GstElement to return state for. | * @elem: a #GstElement to return state for. | |||
| * | * | |||
| * This macro returns the current #GstState of the element. | * This macro returns the current #GstState of the element. | |||
| */ | */ | |||
| #define GST_STATE(elem) (GST_ELEMENT_CAST(elem)->cur rent_state) | #define GST_STATE(elem) (GST_ELEMENT_CAST(elem)->current_st ate) | |||
| /** | /** | |||
| * GST_STATE_NEXT: | * GST_STATE_NEXT: | |||
| * @elem: a #GstElement to return the next state for. | * @elem: a #GstElement to return the next state for. | |||
| * | * | |||
| * This macro returns the next #GstState of the element. | * This macro returns the next #GstState of the element. | |||
| */ | */ | |||
| #define GST_STATE_NEXT(elem) (GST_ELEMENT_CAST(elem)->next_state) | #define GST_STATE_NEXT(elem) (GST_ELEMENT_CAST(elem)->next_state ) | |||
| /** | /** | |||
| * GST_STATE_PENDING: | * GST_STATE_PENDING: | |||
| * @elem: a #GstElement to return the pending state for. | * @elem: a #GstElement to return the pending state for. | |||
| * | * | |||
| * This macro returns the currently pending #GstState of the element. | * This macro returns the currently pending #GstState of the element. | |||
| */ | */ | |||
| #define GST_STATE_PENDING(elem) (GST_ELEMENT_CAST(elem)->pen ding_state) | #define GST_STATE_PENDING(elem) (GST_ELEMENT_CAST(elem)->pending_st ate) | |||
| /** | /** | |||
| * GST_STATE_TARGET: | * GST_STATE_TARGET: | |||
| * @elem: a #GstElement to return the target state for. | * @elem: a #GstElement to return the target state for. | |||
| * | * | |||
| * This macro returns the target #GstState of the element. | * This macro returns the target #GstState of the element. | |||
| * | * | |||
| * Since: 0.10.13 | * Since: 0.10.13 | |||
| */ | */ | |||
| #define GST_STATE_TARGET(elem) (GST_ELEMENT_CAST(elem)->abidata.ABI .target_state) | #define GST_STATE_TARGET(elem) (GST_ELEMENT_CAST(elem)->abidata.AB I.target_state) | |||
| /** | /** | |||
| * GST_STATE_RETURN: | * GST_STATE_RETURN: | |||
| * @elem: a #GstElement to return the last state result for. | * @elem: a #GstElement to return the last state result for. | |||
| * | * | |||
| * This macro returns the last #GstStateChangeReturn value. | * This macro returns the last #GstStateChangeReturn value. | |||
| */ | */ | |||
| #define GST_STATE_RETURN(elem) (GST_ELEMENT_CAST(elem)->last_return ) | #define GST_STATE_RETURN(elem) (GST_ELEMENT_CAST(elem)->last_retur n) | |||
| #define __GST_SIGN(val) ((val) < 0 ? -1 : ((val) > 0 ? 1 : 0)) | #define __GST_SIGN(val) ((val) < 0 ? -1 : ((val) > 0 ? 1 : 0)) | |||
| /** | /** | |||
| * GST_STATE_GET_NEXT: | * GST_STATE_GET_NEXT: | |||
| * @cur: A starting #GstState | * @cur: A starting #GstState | |||
| * @pending: A target #GstState | * @pending: A target #GstState | |||
| * | * | |||
| * Given a current state @cur and a target state @pending, calculate the ne xt (intermediate) | * Given a current state @cur and a target state @pending, calculate the ne xt (intermediate) | |||
| * #GstState. | * #GstState. | |||
| */ | */ | |||
| #define GST_STATE_GET_NEXT(cur,pending) ((cur) + __GST_SIGN ((gint)(pending) - (gint)(cur))) | #define GST_STATE_GET_NEXT(cur,pending) ((cur) + __GST_SIGN ((gint) (pending) - (gint)(cur))) | |||
| /** | /** | |||
| * GST_STATE_TRANSITION: | * GST_STATE_TRANSITION: | |||
| * @cur: A current state | * @cur: A current state | |||
| * @next: A next state | * @next: A next state | |||
| * | * | |||
| * Given a current state @cur and a next state @next, calculate the associa ted | * Given a current state @cur and a next state @next, calculate the associa ted | |||
| * #GstStateChange transition. | * #GstStateChange transition. | |||
| */ | */ | |||
| #define GST_STATE_TRANSITION(cur,next) ((GstStateChange)(((cur)<<3) |(next))) | #define GST_STATE_TRANSITION(cur,next) ((GstStateChange)(((cur)<<3 )|(next))) | |||
| /** | /** | |||
| * GST_STATE_TRANSITION_CURRENT: | * GST_STATE_TRANSITION_CURRENT: | |||
| * @trans: A #GstStateChange | * @trans: A #GstStateChange | |||
| * | * | |||
| * Given a state transition @trans, extract the current #GstState. | * Given a state transition @trans, extract the current #GstState. | |||
| */ | */ | |||
| #define GST_STATE_TRANSITION_CURRENT(trans) ((GstState)((trans)>>3)) | #define GST_STATE_TRANSITION_CURRENT(trans) ((GstState)((trans)>>3)) | |||
| /** | /** | |||
| * GST_STATE_TRANSITION_NEXT: | * GST_STATE_TRANSITION_NEXT: | |||
| * @trans: A #GstStateChange | * @trans: A #GstStateChange | |||
| * | * | |||
| * Given a state transition @trans, extract the next #GstState. | * Given a state transition @trans, extract the next #GstState. | |||
| */ | */ | |||
| #define GST_STATE_TRANSITION_NEXT(trans) ((GstState)((trans)&0x7)) | #define GST_STATE_TRANSITION_NEXT(trans) ((GstState)((trans)&0x7)) | |||
| /** | /** | |||
| * GstStateChange: | * GstStateChange: | |||
| * @GST_STATE_CHANGE_NULL_TO_READY : state change from NULL to READY | * @GST_STATE_CHANGE_NULL_TO_READY : state change from NULL to READY. | |||
| * @GST_STATE_CHANGE_READY_TO_PAUSED : state change from READY to PAUSED | * <itemizedlist> | |||
| * @GST_STATE_CHANGE_PAUSED_TO_PLAYING: state change from PAUSED to PLAYING | * <listitem><para> | |||
| * @GST_STATE_CHANGE_PLAYING_TO_PAUSED: state change from PLAYING to PAUSED | * The element must check if the resources it needs are available. Devi | |||
| * @GST_STATE_CHANGE_PAUSED_TO_READY : state change from PAUSED to READY | ce | |||
| * @GST_STATE_CHANGE_READY_TO_NULL : state change from READY to NULL | * sinks and -sources typically try to probe the device to constrain th | |||
| * | eir | |||
| * The different (interesting) state changes that are passed to the | * caps. | |||
| * state change functions of elements. | * </para></listitem> | |||
| * <listitem><para> | ||||
| * The element opens the device (in case feature need to be probed). | ||||
| * </para></listitem> | ||||
| * </itemizedlist> | ||||
| * @GST_STATE_CHANGE_READY_TO_PAUSED : state change from READY to PAUSED. | ||||
| * <itemizedlist> | ||||
| * <listitem><para> | ||||
| * The element pads are activated in order to receive data in PAUSED. | ||||
| * Streaming threads are started. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Some elements might need to return ASYNC and complete the state chan | ||||
| ge | ||||
| * when they have enough information. It is a requirement for sinks to | ||||
| * return ASYNC and complete the state change when they receive the fir | ||||
| st | ||||
| * buffer or EOS event (preroll). Sinks also block the dataflow when in | ||||
| * PAUSED. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * A pipeline resets the running_time to 0. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Live sources return NO_PREROLL and don't generate data. | ||||
| * </para></listitem> | ||||
| * </itemizedlist> | ||||
| * @GST_STATE_CHANGE_PAUSED_TO_PLAYING: state change from PAUSED to PLAYING | ||||
| . | ||||
| * <itemizedlist> | ||||
| * <listitem><para> | ||||
| * Most elements ignore this state change. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * The pipeline selects a clock and distributes this to all the childre | ||||
| n | ||||
| * before setting them to PLAYING. This means that it is only alowed to | ||||
| * synchronize on the clock in the PLAYING state. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * The pipeline uses the clock and the running_time to calculate the | ||||
| * base_time. The base_time is distributed to all children when perform | ||||
| ing | ||||
| * the state change. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Sink elements stop blocking on the preroll buffer or event and start | ||||
| * rendering the data. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Sinks can post the EOS message in the PLAYING state. It is not allow | ||||
| ed to | ||||
| * post EOS when not in the PLAYING state. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * While streaming in PAUSED or PLAYING elements can create and remove | ||||
| * sometimes pads. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Live sources start generating data and return SUCCESS. | ||||
| * </para></listitem> | ||||
| * </itemizedlist> | ||||
| * @GST_STATE_CHANGE_PLAYING_TO_PAUSED: state change from PLAYING to PAUSED | ||||
| . | ||||
| * <itemizedlist> | ||||
| * <listitem><para> | ||||
| * Most elements ignore this state change. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * The pipeline calculates the running_time based on the last selected | ||||
| clock | ||||
| * and the base_time. It stores this information to continue playback w | ||||
| hen | ||||
| * going back to the PLAYING state. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Sinks unblock any clock wait calls. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * When a sink does not have a pending buffer to play, it returns ASYNC | ||||
| from | ||||
| * this state change and completes the state change when it receives a | ||||
| new | ||||
| * buffer or an EOS event. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Any queued EOS messages are removed since they will be reposted when | ||||
| going | ||||
| * back to the PLAYING state. The EOS messages are queued in GstBins. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Live sources stop generating data and return NO_PREROLL. | ||||
| * </para></listitem> | ||||
| * </itemizedlist> | ||||
| * @GST_STATE_CHANGE_PAUSED_TO_READY : state change from PAUSED to READY. | ||||
| * <itemizedlist> | ||||
| * <listitem><para> | ||||
| * Sinks unblock any waits in the preroll. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Elements unblock any waits on devices | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Chain or get_range functions return WRONG_STATE. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * The element pads are deactivated so that streaming becomes impossibl | ||||
| e and | ||||
| * all streaming threads are stopped. | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * The sink forgets all negotiated formats | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Elements remove all sometimes pads | ||||
| * </para></listitem> | ||||
| * </itemizedlist> | ||||
| * @GST_STATE_CHANGE_READY_TO_NULL : state change from READY to NULL. | ||||
| * <itemizedlist> | ||||
| * <listitem><para> | ||||
| * Elements close devices | ||||
| * </para></listitem> | ||||
| * <listitem><para> | ||||
| * Elements reset any internal state. | ||||
| * </para></listitem> | ||||
| * </itemizedlist> | ||||
| * | ||||
| * These are the different state changes an element goes through. | ||||
| * %GST_STATE_NULL ⇒ %GST_STATE_PLAYING is called an upwards state cha | ||||
| nge | ||||
| * and %GST_STATE_PLAYING ⇒ %GST_STATE_NULL a downwards state change. | ||||
| */ | */ | |||
| typedef enum /*< flags=0 >*/ | typedef enum /*< flags=0 >*/ | |||
| { | { | |||
| GST_STATE_CHANGE_NULL_TO_READY = (GST_STATE_NULL<<3) | GST_STATE_RE | GST_STATE_CHANGE_NULL_TO_READY = (GST_STATE_NULL<<3) | GST_STATE_R | |||
| ADY, | EADY, | |||
| GST_STATE_CHANGE_READY_TO_PAUSED = (GST_STATE_READY<<3) | GST_STATE_P | GST_STATE_CHANGE_READY_TO_PAUSED = (GST_STATE_READY<<3) | GST_STATE_ | |||
| AUSED, | PAUSED, | |||
| GST_STATE_CHANGE_PAUSED_TO_PLAYING = (GST_STATE_PAUSED<<3) | GST_STATE_ | GST_STATE_CHANGE_PAUSED_TO_PLAYING = (GST_STATE_PAUSED<<3) | GST_STATE | |||
| PLAYING, | _PLAYING, | |||
| GST_STATE_CHANGE_PLAYING_TO_PAUSED = (GST_STATE_PLAYING<<3) | GST_STATE | GST_STATE_CHANGE_PLAYING_TO_PAUSED = (GST_STATE_PLAYING<<3) | GST_STAT | |||
| _PAUSED, | E_PAUSED, | |||
| GST_STATE_CHANGE_PAUSED_TO_READY = (GST_STATE_PAUSED<<3) | GST_STATE_ | GST_STATE_CHANGE_PAUSED_TO_READY = (GST_STATE_PAUSED<<3) | GST_STATE | |||
| READY, | _READY, | |||
| GST_STATE_CHANGE_READY_TO_NULL = (GST_STATE_READY<<3) | GST_STATE_N | GST_STATE_CHANGE_READY_TO_NULL = (GST_STATE_READY<<3) | GST_STATE_ | |||
| ULL | NULL | |||
| } GstStateChange; | } GstStateChange; | |||
| /** | /** | |||
| * GstElementFlags: | * GstElementFlags: | |||
| * @GST_ELEMENT_LOCKED_STATE: ignore state changes from parent | * @GST_ELEMENT_LOCKED_STATE: ignore state changes from parent | |||
| * @GST_ELEMENT_IS_SINK: the element is a sink | * @GST_ELEMENT_IS_SINK: the element is a sink | |||
| * @GST_ELEMENT_UNPARENTING: Child is being removed from the parent bin. | * @GST_ELEMENT_UNPARENTING: Child is being removed from the parent bin. | |||
| * gst_bin_remove() on a child already being removed immediately returns F ALSE | * gst_bin_remove() on a child already being removed immediately returns F ALSE | |||
| * @GST_ELEMENT_IS_SOURCE: the element is a source. Since 0.10.31 | ||||
| * @GST_ELEMENT_FLAG_LAST: offset to define more flags | * @GST_ELEMENT_FLAG_LAST: offset to define more flags | |||
| * | * | |||
| * The standard flags that an element may have. | * The standard flags that an element may have. | |||
| */ | */ | |||
| typedef enum | typedef enum | |||
| { | { | |||
| GST_ELEMENT_LOCKED_STATE = (GST_OBJECT_FLAG_LAST << 0), | GST_ELEMENT_LOCKED_STATE = (GST_OBJECT_FLAG_LAST << 0), | |||
| GST_ELEMENT_IS_SINK = (GST_OBJECT_FLAG_LAST << 1), | GST_ELEMENT_IS_SINK = (GST_OBJECT_FLAG_LAST << 1), | |||
| GST_ELEMENT_UNPARENTING = (GST_OBJECT_FLAG_LAST << 2), | GST_ELEMENT_UNPARENTING = (GST_OBJECT_FLAG_LAST << 2), | |||
| GST_ELEMENT_IS_SOURCE = (GST_OBJECT_FLAG_LAST << 3), | ||||
| /* padding */ | /* padding */ | |||
| GST_ELEMENT_FLAG_LAST = (GST_OBJECT_FLAG_LAST << 16) | GST_ELEMENT_FLAG_LAST = (GST_OBJECT_FLAG_LAST << 16) | |||
| } GstElementFlags; | } GstElementFlags; | |||
| /** | /** | |||
| * GST_ELEMENT_IS_LOCKED_STATE: | * GST_ELEMENT_IS_LOCKED_STATE: | |||
| * @elem: A #GstElement to query | * @elem: A #GstElement to query | |||
| * | * | |||
| * Check if the element is in the locked state and therefore will ignore st ate | * Check if the element is in the locked state and therefore will ignore st ate | |||
| * changes from its parent object. | * changes from its parent object. | |||
| */ | */ | |||
| #define GST_ELEMENT_IS_LOCKED_STATE(elem) (GST_OBJECT_FLAG_IS_SET(el em,GST_ELEMENT_LOCKED_STATE)) | #define GST_ELEMENT_IS_LOCKED_STATE(elem) (GST_OBJECT_FLAG_IS_SET(el em,GST_ELEMENT_LOCKED_STATE)) | |||
| /** | /** | |||
| * GST_ELEMENT_NAME: | * GST_ELEMENT_NAME: | |||
| * @elem: A #GstElement to query | * @elem: A #GstElement to query | |||
| * | * | |||
| * Gets the name of this element. Use only in core as this is not | * Gets the name of this element. Use only in core as this is not | |||
| * ABI-compatible. Others use gst_element_get_name() | * ABI-compatible. Others use gst_element_get_name() | |||
| */ | */ | |||
| #define GST_ELEMENT_NAME(elem) (GST_OBJECT_NAME(elem)) | #define GST_ELEMENT_NAME(elem) (GST_OBJECT_NAME(elem)) | |||
| /** | /** | |||
| * GST_ELEMENT_PARENT: | * GST_ELEMENT_PARENT: | |||
| * @elem: A #GstElement to query | * @elem: A #GstElement to query | |||
| * | * | |||
| * Get the parent object of this element. | * Get the parent object of this element. | |||
| */ | */ | |||
| #define GST_ELEMENT_PARENT(elem) (GST_ELEMENT_CAST(GST_OBJECT _PARENT(elem))) | #define GST_ELEMENT_PARENT(elem) (GST_ELEMENT_CAST(GST_OBJEC T_PARENT(elem))) | |||
| /** | /** | |||
| * GST_ELEMENT_BUS: | * GST_ELEMENT_BUS: | |||
| * @elem: A #GstElement to query | * @elem: A #GstElement to query | |||
| * | * | |||
| * Get the message bus of this element. | * Get the message bus of this element. | |||
| */ | */ | |||
| #define GST_ELEMENT_BUS(elem) (GST_ELEMENT_CAST(elem)->bus ) | #define GST_ELEMENT_BUS(elem) (GST_ELEMENT_CAST(elem)->bu s) | |||
| /** | /** | |||
| * GST_ELEMENT_CLOCK: | * GST_ELEMENT_CLOCK: | |||
| * @elem: A #GstElement to query | * @elem: A #GstElement to query | |||
| * | * | |||
| * Get the clock of this element | * Get the clock of this element | |||
| */ | */ | |||
| #define GST_ELEMENT_CLOCK(elem) (GST_ELEMENT_CAST(el em)->clock) | #define GST_ELEMENT_CLOCK(elem) (GST_ELEMENT_CAST(elem)->cl ock) | |||
| /** | /** | |||
| * GST_ELEMENT_PADS: | * GST_ELEMENT_PADS: | |||
| * @elem: A #GstElement to query | * @elem: A #GstElement to query | |||
| * | * | |||
| * Get the pads of this elements. | * Get the pads of this elements. | |||
| */ | */ | |||
| #define GST_ELEMENT_PADS(elem) (GST_ELEMENT_CAST(elem)->pad | #define GST_ELEMENT_PADS(elem) (GST_ELEMENT_CAST(elem)->pa | |||
| s) | ds) | |||
| /** | ||||
| * GST_ELEMENT_START_TIME: | ||||
| * @elem: a #GstElement to return the start time for. | ||||
| * | ||||
| * This macro returns the start_time of the @elem. The start_time is the | ||||
| * running_time of the pipeline when the element went to PAUSED. | ||||
| * | ||||
| * Since: 0.10.24 | ||||
| */ | ||||
| #define GST_ELEMENT_START_TIME(elem) (GST_ELEMENT_CAST(elem)->ab | ||||
| idata.ABI.start_time) | ||||
| /** | /** | |||
| * GST_ELEMENT_ERROR: | * GST_ELEMENT_ERROR: | |||
| * @el: the element that generates the error | * @el: the element that generates the error | |||
| * @domain: like CORE, LIBRARY, RESOURCE or STREAM (see #gstreamer-GstGErro r) | * @domain: like CORE, LIBRARY, RESOURCE or STREAM (see #gstreamer-GstGErro r) | |||
| * @code: error code defined for that domain (see #gstreamer-GstGError) | * @code: error code defined for that domain (see #gstreamer-GstGError) | |||
| * @text: the message to display (format string and args enclosed in | * @text: the message to display (format string and args enclosed in | |||
| parentheses) | parentheses) | |||
| * @debug: debugging information for the message (format string and args | * @debug: debugging information for the message (format string and args | |||
| enclosed in parentheses) | enclosed in parentheses) | |||
| * | * | |||
| * Utility function that elements can use in case they encountered a fatal | * Utility function that elements can use in case they encountered a fatal | |||
| * data processing error. The pipeline will post an error message and the | * data processing error. The pipeline will post an error message and the | |||
| * application will be requested to stop further media processing. | * application will be requested to stop further media processing. | |||
| */ | */ | |||
| #define GST_ELEMENT_ERROR(el, domain, code, text, debug) \ | #define GST_ELEMENT_ERROR(el, domain, code, text, debug) \ | |||
| G_STMT_START { \ | G_STMT_START { \ | |||
| gchar *__txt = _gst_element_error_printf text; \ | gchar *__txt = _gst_element_error_printf text; \ | |||
| gchar *__dbg = _gst_element_error_printf debug; \ | gchar *__dbg = _gst_element_error_printf debug; \ | |||
| if (__txt) \ | if (__txt) \ | |||
| GST_WARNING_OBJECT (el, "error: %s", __txt); \ | GST_WARNING_OBJECT (el, "error: %s", __txt); \ | |||
| if (__dbg) \ | if (__dbg) \ | |||
| GST_WARNING_OBJECT (el, "error: %s", __dbg); \ | GST_WARNING_OBJECT (el, "error: %s", __dbg); \ | |||
| gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_ERROR, | gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_ERROR, \ | |||
| \ | GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \ | |||
| GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \ | __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \ | |||
| __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \ | ||||
| } G_STMT_END | } G_STMT_END | |||
| /** | /** | |||
| * GST_ELEMENT_WARNING: | * GST_ELEMENT_WARNING: | |||
| * @el: the element that generates the warning | * @el: the element that generates the warning | |||
| * @domain: like CORE, LIBRARY, RESOURCE or STREAM (see #gstreamer-GstGErro r) | * @domain: like CORE, LIBRARY, RESOURCE or STREAM (see #gstreamer-GstGErro r) | |||
| * @code: error code defined for that domain (see #gstreamer-GstGError) | * @code: error code defined for that domain (see #gstreamer-GstGError) | |||
| * @text: the message to display (format string and args enclosed in | * @text: the message to display (format string and args enclosed in | |||
| parentheses) | parentheses) | |||
| * @debug: debugging information for the message (format string and args | * @debug: debugging information for the message (format string and args | |||
| enclosed in parentheses) | enclosed in parentheses) | |||
| * | * | |||
| * Utility function that elements can use in case they encountered a non-fa tal | * Utility function that elements can use in case they encountered a non-fa tal | |||
| * data processing problem. The pipeline will post a warning message and th e | * data processing problem. The pipeline will post a warning message and th e | |||
| * application will be informed. | * application will be informed. | |||
| */ | */ | |||
| #define GST_ELEMENT_WARNING(el, domain, code, text, debug) \ | #define GST_ELEMENT_WARNING(el, domain, code, text, debug) \ | |||
| G_STMT_START { \ | G_STMT_START { \ | |||
| gchar *__txt = _gst_element_error_printf text; \ | gchar *__txt = _gst_element_error_printf text; \ | |||
| gchar *__dbg = _gst_element_error_printf debug; \ | gchar *__dbg = _gst_element_error_printf debug; \ | |||
| if (__txt) \ | if (__txt) \ | |||
| GST_WARNING_OBJECT (el, "warning: %s", __txt); \ | GST_WARNING_OBJECT (el, "warning: %s", __txt); \ | |||
| if (__dbg) \ | if (__dbg) \ | |||
| GST_WARNING_OBJECT (el, "warning: %s", __dbg); \ | GST_WARNING_OBJECT (el, "warning: %s", __dbg); \ | |||
| gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_WARNING, \ | gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_WARNING, \ | |||
| GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \ | GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \ | |||
| __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \ | __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \ | |||
| } G_STMT_END | } G_STMT_END | |||
| /** | /** | |||
| * GST_ELEMENT_INFO: | * GST_ELEMENT_INFO: | |||
| * @el: the element that generates the information | * @el: the element that generates the information | |||
| * @domain: like CORE, LIBRARY, RESOURCE or STREAM (see #gstreamer-GstGErro r) | * @domain: like CORE, LIBRARY, RESOURCE or STREAM (see #gstreamer-GstGErro r) | |||
| * @code: error code defined for that domain (see #gstreamer-GstGError) | * @code: error code defined for that domain (see #gstreamer-GstGError) | |||
| * @text: the message to display (format string and args enclosed in | * @text: the message to display (format string and args enclosed in | |||
| parentheses) | parentheses) | |||
| * @debug: debugging information for the message (format string and args | * @debug: debugging information for the message (format string and args | |||
| enclosed in parentheses) | enclosed in parentheses) | |||
| * | * | |||
| * Utility function that elements can use in case they want to inform | * Utility function that elements can use in case they want to inform | |||
| * the application of something noteworthy that is not an error. | * the application of something noteworthy that is not an error. | |||
| * The pipeline will post a warning message and the | * The pipeline will post a warning message and the | |||
| * application will be informed. | * application will be informed. | |||
| * | * | |||
| * Since: 0.10.12 | * Since: 0.10.12 | |||
| */ | */ | |||
| #define GST_ELEMENT_INFO(el, domain, code, text, debug) | #define GST_ELEMENT_INFO(el, domain, code, text, debug) \ | |||
| \ | G_STMT_START { \ | |||
| G_STMT_START { \ | gchar *__txt = _gst_element_error_printf text; \ | |||
| gchar *__txt = _gst_element_error_printf text; \ | gchar *__dbg = _gst_element_error_printf debug; \ | |||
| gchar *__dbg = _gst_element_error_printf debug; \ | if (__txt) \ | |||
| if (__txt) \ | GST_INFO_OBJECT (el, "info: %s", __txt); \ | |||
| GST_INFO_OBJECT (el, "info: %s", __txt); \ | if (__dbg) \ | |||
| if (__dbg) \ | GST_INFO_OBJECT (el, "info: %s", __dbg); \ | |||
| GST_INFO_OBJECT (el, "info: %s", __dbg); \ | gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_INFO, \ | |||
| gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_INFO, \ | GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \ | |||
| GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \ | __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \ | |||
| __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \ | ||||
| } G_STMT_END | } G_STMT_END | |||
| /* the state change mutexes and conds */ | /* the state change mutexes and conds */ | |||
| /** | /** | |||
| * GST_STATE_GET_LOCK: | * GST_STATE_GET_LOCK: | |||
| * @elem: a #GstElement | * @elem: a #GstElement | |||
| * | * | |||
| * Get a reference to the state lock of @elem. | * Get a reference to the state lock of @elem. | |||
| * This lock is used by the core. It is taken while getting or setting | * This lock is used by the core. It is taken while getting or setting | |||
| * the state, during state changes, and while finalizing. | * the state, during state changes, and while finalizing. | |||
| skipping to change at line 371 | skipping to change at line 502 | |||
| * Get the conditional used to signal the completion of a state change. | * Get the conditional used to signal the completion of a state change. | |||
| */ | */ | |||
| #define GST_STATE_GET_COND(elem) (GST_ELEMENT_CAST(elem)->sta te_cond) | #define GST_STATE_GET_COND(elem) (GST_ELEMENT_CAST(elem)->sta te_cond) | |||
| #define GST_STATE_LOCK(elem) g_static_rec_mutex_lock(GST_ STATE_GET_LOCK(elem)) | #define GST_STATE_LOCK(elem) g_static_rec_mutex_lock(GST_ STATE_GET_LOCK(elem)) | |||
| #define GST_STATE_TRYLOCK(elem) g_static_rec_mutex_trylock(G ST_STATE_GET_LOCK(elem)) | #define GST_STATE_TRYLOCK(elem) g_static_rec_mutex_trylock(G ST_STATE_GET_LOCK(elem)) | |||
| #define GST_STATE_UNLOCK(elem) g_static_rec_mutex_unlock(GS T_STATE_GET_LOCK(elem)) | #define GST_STATE_UNLOCK(elem) g_static_rec_mutex_unlock(GS T_STATE_GET_LOCK(elem)) | |||
| #define GST_STATE_UNLOCK_FULL(elem) g_static_rec_mutex_unlock_fu ll(GST_STATE_GET_LOCK(elem)) | #define GST_STATE_UNLOCK_FULL(elem) g_static_rec_mutex_unlock_fu ll(GST_STATE_GET_LOCK(elem)) | |||
| #define GST_STATE_LOCK_FULL(elem,t) g_static_rec_mutex_lock_full (GST_STATE_GET_LOCK(elem), t) | #define GST_STATE_LOCK_FULL(elem,t) g_static_rec_mutex_lock_full (GST_STATE_GET_LOCK(elem), t) | |||
| #define GST_STATE_WAIT(elem) g_cond_wait (GST_STATE_GET_C OND (elem), \ | #define GST_STATE_WAIT(elem) g_cond_wait (GST_STATE_GET_C OND (elem), \ | |||
| GST_OBJECT_GET_LOCK (elem)) | GST_OBJECT_GET_LOCK (elem)) | |||
| #define GST_STATE_TIMED_WAIT(elem, timeval) g_cond_timed_wait (GST_STATE _GET_COND (elem), \ | #define GST_STATE_TIMED_WAIT(elem, timeval) g_cond_timed_wait (GST_STATE _GET_COND (elem), \ | |||
| GST_OBJECT_GET_LOCK (elem), timeval) | GST_OBJECT_GET_LOCK (elem), timeval) | |||
| #define GST_STATE_SIGNAL(elem) g_cond_signal (GST_STATE_GET _COND (elem)); | #define GST_STATE_SIGNAL(elem) g_cond_signal (GST_STATE_GET _COND (elem)); | |||
| #define GST_STATE_BROADCAST(elem) g_cond_broadcast (GST_STATE_ GET_COND (elem)); | #define GST_STATE_BROADCAST(elem) g_cond_broadcast (GST_STATE_ GET_COND (elem)); | |||
| /** | /** | |||
| * GstElement: | * GstElement: | |||
| * @state_lock: Used to serialize execution of gst_element_set_state() | * @state_lock: Used to serialize execution of gst_element_set_state() | |||
| * @state_cond: Used to signal completion of a state change | * @state_cond: Used to signal completion of a state change | |||
| * @state_cookie: Used to detect concurrent execution of | * @state_cookie: Used to detect concurrent execution of | |||
| * gst_element_set_state() and gst_element_get_state() | * gst_element_set_state() and gst_element_get_state() | |||
| * @current_state: the current state of an element | * @current_state: the current state of an element | |||
| * @next_state: the next state of an element, can be #GST_STATE_VOID_PENDIN G if | * @next_state: the next state of an element, can be #GST_STATE_VOID_PENDIN G if | |||
| * the element is in the correct state. | * the element is in the correct state. | |||
| * @pending_state: the final state the element should go to, can be | * @pending_state: the final state the element should go to, can be | |||
| * #GST_STATE_VOID_PENDING if the element is in the correct state | * #GST_STATE_VOID_PENDING if the element is in the correct state | |||
| * @last_return: the last return value of an element state change | * @last_return: the last return value of an element state change | |||
| * @bus: the bus of the element. This bus is provided to the element by the | * @bus: the bus of the element. This bus is provided to the element by the | |||
| * parent element or the application. A #GstPipeline has a bus of its own. | * parent element or the application. A #GstPipeline has a bus of its own. | |||
| * @clock: the clock of the element. This clock is usually provided by to t he | * @clock: the clock of the element. This clock is usually provided to the | |||
| * element by the toplevel #GstPipeline. | * element by the toplevel #GstPipeline. | |||
| * @base_time: the time of the clock right before the element is set to | * @base_time: the time of the clock right before the element is set to | |||
| * PLAYING. Subtracting @base_time from the current clock time in the PLAYI NG | * PLAYING. Subtracting @base_time from the current clock time in the PLAYI NG | |||
| * state will yield the stream time. | * state will yield the running_time against the clock. | |||
| * @numpads: number of pads of the element, includes both source and sink p ads. | * @numpads: number of pads of the element, includes both source and sink p ads. | |||
| * @pads: list of pads | * @pads: list of pads | |||
| * @numsrcpads: number of source pads of the element. | * @numsrcpads: number of source pads of the element. | |||
| * @srcpads: list of source pads | * @srcpads: list of source pads | |||
| * @numsinkpads: number of sink pads of the element. | * @numsinkpads: number of sink pads of the element. | |||
| * @sinkpads: list of sink pads | * @sinkpads: list of sink pads | |||
| * @pads_cookie: updated whenever the a pad is added or removed | * @pads_cookie: updated whenever the a pad is added or removed | |||
| * | * | |||
| * GStreamer element abstract base class. | * GStreamer element abstract base class. | |||
| */ | */ | |||
| struct _GstElement | struct _GstElement | |||
| { | { | |||
| GstObject object; | GstObject object; | |||
| /*< public >*/ /* with LOCK */ | /*< public >*/ /* with LOCK */ | |||
| GStaticRecMutex *state_lock; | GStaticRecMutex *state_lock; | |||
| /* element state */ | /* element state */ | |||
| GCond *state_cond; | GCond *state_cond; | |||
| guint32 state_cookie; | guint32 state_cookie; | |||
| GstState current_state; | GstState current_state; | |||
| GstState next_state; | GstState next_state; | |||
| GstState pending_state; | GstState pending_state; | |||
| GstStateChangeReturn last_return; | GstStateChangeReturn last_return; | |||
| GstBus *bus; | GstBus *bus; | |||
| /* allocated clock */ | /* allocated clock */ | |||
| GstClock *clock; | GstClock *clock; | |||
| GstClockTimeDiff base_time; /* NULL/READY: 0 - PAUSED: current time - | GstClockTimeDiff base_time; /* NULL/READY: 0 - PAUSED: current time | |||
| PLAYING: difference to clock */ | - PLAYING: difference to clock */ | |||
| PLAYING: difference to clock */ | ||||
| /* element pads, these lists can only be iterated while holding | /* element pads, these lists can only be iterated while holding | |||
| * the LOCK or checking the cookie after each LOCK. */ | * the LOCK or checking the cookie after each LOCK. */ | |||
| guint16 numpads; | guint16 numpads; | |||
| GList *pads; | GList *pads; | |||
| guint16 numsrcpads; | guint16 numsrcpads; | |||
| GList *srcpads; | GList *srcpads; | |||
| guint16 numsinkpads; | guint16 numsinkpads; | |||
| GList *sinkpads; | GList *sinkpads; | |||
| guint32 pads_cookie; | guint32 pads_cookie; | |||
| /*< private >*/ | /*< private >*/ | |||
| union { | union { | |||
| struct { | struct { | |||
| /* state set by application */ | /* state set by application */ | |||
| GstState target_state; | GstState target_state; | |||
| /* running time of the last PAUSED state */ | ||||
| GstClockTime start_time; | ||||
| } ABI; | } ABI; | |||
| /* adding + 0 to mark ABI change to be undone later */ | /* adding + 0 to mark ABI change to be undone later */ | |||
| gpointer _gst_reserved[GST_PADDING + 0]; | gpointer _gst_reserved[GST_PADDING + 0]; | |||
| } abidata; | } abidata; | |||
| }; | }; | |||
| /** | /** | |||
| * GstElementClass: | * GstElementClass: | |||
| * @parent_class: the parent class structure | * @parent_class: the parent class structure | |||
| * @details: #GstElementDetails for elements of this class | * @details: #GstElementDetails for elements of this class | |||
| skipping to change at line 469 | skipping to change at line 602 | |||
| * @set_state: set a new state on the element | * @set_state: set a new state on the element | |||
| * @change_state: called by @set_state to perform an incremental state chan ge | * @change_state: called by @set_state to perform an incremental state chan ge | |||
| * @set_bus: set a #GstBus on the element | * @set_bus: set a #GstBus on the element | |||
| * @provide_clock: gets the #GstClock provided by the element | * @provide_clock: gets the #GstClock provided by the element | |||
| * @set_clock: set the #GstClock on the element | * @set_clock: set the #GstClock on the element | |||
| * @get_index: set a #GstIndex on the element | * @get_index: set a #GstIndex on the element | |||
| * @set_index: get the #GstIndex of an element | * @set_index: get the #GstIndex of an element | |||
| * @send_event: send a #GstEvent to the element | * @send_event: send a #GstEvent to the element | |||
| * @get_query_types: get the supported #GstQueryType of this element | * @get_query_types: get the supported #GstQueryType of this element | |||
| * @query: perform a #GstQuery on the element | * @query: perform a #GstQuery on the element | |||
| * @request_new_pad_full: called when a new pad is requested. Since: 0.10.3 2. | ||||
| * | * | |||
| * GStreamer element class. Override the vmethods to implement the element | * GStreamer element class. Override the vmethods to implement the element | |||
| * functionality. | * functionality. | |||
| */ | */ | |||
| struct _GstElementClass | struct _GstElementClass | |||
| { | { | |||
| GstObjectClass parent_class; | GstObjectClass parent_class; | |||
| /*< public >*/ | /*< public >*/ | |||
| /* the element details */ | /* the element details */ | |||
| GstElementDetails details; | /* FIXME-0.11: deprecate this in favour of meta_data */ | |||
| GstElementDetails details; | ||||
| /* factory that the element was created from */ | /* factory that the element was created from */ | |||
| GstElementFactory *elementfactory; | GstElementFactory *elementfactory; | |||
| /* templates for our pads */ | /* templates for our pads */ | |||
| GList *padtemplates; | GList *padtemplates; | |||
| gint numpadtemplates; | gint numpadtemplates; | |||
| guint32 pad_templ_cookie; | guint32 pad_templ_cookie; | |||
| /*< private >*/ | /*< private >*/ | |||
| /* signal callbacks */ | /* signal callbacks */ | |||
| void (*pad_added) (GstElement *element, GstPad *pad); | void (*pad_added) (GstElement *element, GstPad *pad); | |||
| void (*pad_removed) (GstElement *element, GstPad *pad); | void (*pad_removed) (GstElement *element, GstPad *pad); | |||
| void (*no_more_pads) (GstElement *element); | void (*no_more_pads) (GstElement *element); | |||
| /*< public >*/ | /*< public >*/ | |||
| /* virtual methods for subclasses */ | /* virtual methods for subclasses */ | |||
| /* request/release pads */ | /* request/release pads */ | |||
| GstPad* (*request_new_pad) (GstElement *element, GstPad | GstPad* (*request_new_pad) (GstElement *element, GstPa | |||
| Template *templ, const gchar* name); | dTemplate *templ, const gchar* name); | |||
| void (*release_pad) (GstElement *element, GstPad | void (*release_pad) (GstElement *element, GstPa | |||
| *pad); | d *pad); | |||
| /* state changes */ | /* state changes */ | |||
| GstStateChangeReturn (*get_state) (GstElement * element, GstSt | GstStateChangeReturn (*get_state) (GstElement * element, GstS | |||
| ate * state, | tate * state, | |||
| GstState * pending, GstCloc | GstState * pending, GstClo | |||
| kTime timeout); | ckTime timeout); | |||
| GstStateChangeReturn (*set_state) (GstElement *element, GstSta | GstStateChangeReturn (*set_state) (GstElement *element, GstSt | |||
| te state); | ate state); | |||
| GstStateChangeReturn (*change_state) (GstElement *element, GstSta | GstStateChangeReturn (*change_state) (GstElement *element, GstSt | |||
| teChange transition); | ateChange transition); | |||
| /* bus */ | /* bus */ | |||
| void (*set_bus) (GstElement * element, GstBu s * bus); | void (*set_bus) (GstElement * element, GstB us * bus); | |||
| /* set/get clocks */ | /* set/get clocks */ | |||
| GstClock* (*provide_clock) (GstElement *element); | GstClock* (*provide_clock) (GstElement *element); | |||
| gboolean (*set_clock) (GstElement *element, GstClo | gboolean (*set_clock) (GstElement *element, GstCl | |||
| ck *clock); | ock *clock); | |||
| /* index */ | /* index */ | |||
| GstIndex* (*get_index) (GstElement *element); | GstIndex* (*get_index) (GstElement *element); | |||
| void (*set_index) (GstElement *element, GstInd | void (*set_index) (GstElement *element, GstIn | |||
| ex *index); | dex *index); | |||
| /* query functions */ | /* query functions */ | |||
| gboolean (*send_event) (GstElement *element, GstEve nt *event); | gboolean (*send_event) (GstElement *element, GstEv ent *event); | |||
| const GstQueryType* (*get_query_types) (GstElement *element); | const GstQueryType* (*get_query_types) (GstElement *element); | |||
| gboolean (*query) (GstElement *element, GstQue | gboolean (*query) (GstElement *element, GstQu | |||
| ry *query); | ery *query); | |||
| /*< private >*/ | /*< private >*/ | |||
| gpointer _gst_reserved[GST_PADDING]; | /* FIXME-0.11: move up and replace details */ | |||
| gpointer meta_data; | ||||
| /*< public >*/ | ||||
| /* Virtual method for subclasses (additions) */ | ||||
| /* FIXME-0.11 Make this the default behaviour */ | ||||
| GstPad* (*request_new_pad_full) (GstElement *element, GstPad | ||||
| Template *templ, | ||||
| const gchar* name, const Gs | ||||
| tCaps *caps); | ||||
| /*< private >*/ | ||||
| gpointer _gst_reserved[GST_PADDING-2]; | ||||
| }; | }; | |||
| /* element class pad templates */ | /* element class pad templates */ | |||
| void gst_element_class_add_pad_template (GstElementC | void gst_element_class_add_pad_template (GstElement | |||
| lass *klass, GstPadTemplate *templ); | Class *klass, GstPadTemplate *templ); | |||
| GstPadTemplate* gst_element_class_get_pad_template (Gst | GstPadTemplate* gst_element_class_get_pad_template (GstElement | |||
| ElementClass *element_class, const gchar *name); | Class *element_class, const gchar *name); | |||
| GList* gst_element_class_get_pad_template_list (Gst | GList* gst_element_class_get_pad_template_list (GstElement | |||
| ElementClass *element_class); | Class *element_class); | |||
| void gst_element_class_set_details (GstElementC | ||||
| lass *klass, const GstElementDetails *details); | /* element class meta data */ | |||
| void gst_element_class_set_details_simple (GstElementC | void gst_element_class_set_documentation_uri (GstElement | |||
| lass *klass, | Class * klass, const gchar *uri); | |||
| const gchar | void gst_element_class_set_icon_name (GstElement | |||
| *longname, | Class * klass, const gchar *name); | |||
| const gchar | #ifndef GST_DISABLE_DEPRECATED | |||
| *classification, | void gst_element_class_set_details (GstElement | |||
| const gchar | Class *klass, const GstElementDetails *details); | |||
| *description, | #endif | |||
| const gchar | void gst_element_class_set_details_simple (GstElement | |||
| *author); | Class *klass, | |||
| const gcha | ||||
| r *longname, | ||||
| const gcha | ||||
| r *classification, | ||||
| const gcha | ||||
| r *description, | ||||
| const gcha | ||||
| r *author); | ||||
| /* element instance */ | /* element instance */ | |||
| GType gst_element_get_type (void); | GType gst_element_get_type (void); | |||
| /* basic name and parentage stuff from GstObject */ | /* basic name and parentage stuff from GstObject */ | |||
| /** | /** | |||
| * gst_element_get_name: | * gst_element_get_name: | |||
| * @elem: a #GstElement to set the name of. | * @elem: a #GstElement to get the name of @elem. | |||
| * | ||||
| * Returns a copy of the name of @elem. | ||||
| * Caller should g_free() the return value after usage. | ||||
| * For a nameless element, this returns NULL, which you can safely g_free() | ||||
| * as well. | ||||
| * | ||||
| * Returns: (transfer full): the name of @elem. g_free() after usage. MT sa | ||||
| fe. | ||||
| * | * | |||
| * Gets the name of the element. | ||||
| */ | */ | |||
| #define gst_element_get_name(elem) gst_object_g et_name(GST_OBJECT_CAST(elem)) | #define gst_element_get_name(elem) gst_object_get_name (GST_OBJECT_CAST(elem)) | |||
| /** | /** | |||
| * gst_element_set_name: | * gst_element_set_name: | |||
| * @elem: a #GstElement to set the name of. | * @elem: a #GstElement to set the name of. | |||
| * @name: the new name | * @name: the new name | |||
| * | * | |||
| * Sets the name of the element, getting rid of the old name if there was o ne. | * Sets the name of the element, getting rid of the old name if there was o ne. | |||
| */ | */ | |||
| #define gst_element_set_name(elem,name) gst_object_s et_name(GST_OBJECT_CAST(elem),name) | #define gst_element_set_name(elem,name) gst_object_set_name (GST_OBJECT_CAST(elem),name) | |||
| /** | /** | |||
| * gst_element_get_parent: | * gst_element_get_parent: | |||
| * @elem: a #GstElement to get the parent of. | * @elem: a #GstElement to get the parent of. | |||
| * | * | |||
| * Gets the parent of an element. | * Returns: (transfer full): the parent of an element. | |||
| */ | */ | |||
| #define gst_element_get_parent(elem) gst_object_g et_parent(GST_OBJECT_CAST(elem)) | #define gst_element_get_parent(elem) gst_object_get_pare nt(GST_OBJECT_CAST(elem)) | |||
| /** | /** | |||
| * gst_element_set_parent: | * gst_element_set_parent: | |||
| * @elem: a #GstElement to set the parent of. | * @elem: a #GstElement to set the parent of. | |||
| * @parent: the new parent #GstObject of the element. | * @parent: the new parent #GstObject of the element. | |||
| * | * | |||
| * Sets the parent of an element. | * Sets the parent of an element. | |||
| */ | */ | |||
| #define gst_element_set_parent(elem,parent) gst_ object_set_parent(GST_OBJECT_CAST(elem),parent) | #define gst_element_set_parent(elem,parent) gst_object_ set_parent(GST_OBJECT_CAST(elem),parent) | |||
| /* clocking */ | /* clocking */ | |||
| gboolean gst_element_requires_clock (GstElement *element | gboolean gst_element_requires_clock (GstElement *elemen | |||
| ); | t); | |||
| gboolean gst_element_provides_clock (GstElement *element | gboolean gst_element_provides_clock (GstElement *elemen | |||
| ); | t); | |||
| GstClock* gst_element_provide_clock (GstElement *element | GstClock* gst_element_provide_clock (GstElement *elemen | |||
| ); | t); | |||
| GstClock* gst_element_get_clock (GstElement *element | GstClock* gst_element_get_clock (GstElement *elemen | |||
| ); | t); | |||
| gboolean gst_element_set_clock (GstElement *element | gboolean gst_element_set_clock (GstElement *elemen | |||
| , GstClock *clock); | t, GstClock *clock); | |||
| void gst_element_set_base_time (GstElement *element | void gst_element_set_base_time (GstElement *elemen | |||
| , GstClockTime time); | t, GstClockTime time); | |||
| GstClockTime gst_element_get_base_time (GstElement *element | GstClockTime gst_element_get_base_time (GstElement *elemen | |||
| ); | t); | |||
| void gst_element_set_start_time (GstElement *elemen | ||||
| t, GstClockTime time); | ||||
| GstClockTime gst_element_get_start_time (GstElement *elemen | ||||
| t); | ||||
| /* indexes */ | /* indexes */ | |||
| gboolean gst_element_is_indexable (GstElement *element | gboolean gst_element_is_indexable (GstElement *elemen | |||
| ); | t); | |||
| void gst_element_set_index (GstElement *element | void gst_element_set_index (GstElement *elemen | |||
| , GstIndex *index); | t, GstIndex *index); | |||
| GstIndex* gst_element_get_index (GstElement *element | GstIndex* gst_element_get_index (GstElement *elemen | |||
| ); | t); | |||
| /* bus */ | /* bus */ | |||
| void gst_element_set_bus (GstElement * elemen | void gst_element_set_bus (GstElement * eleme | |||
| t, GstBus * bus); | nt, GstBus * bus); | |||
| GstBus * gst_element_get_bus (GstElement * elemen | GstBus * gst_element_get_bus (GstElement * eleme | |||
| t); | nt); | |||
| /* pad management */ | /* pad management */ | |||
| gboolean gst_element_add_pad (GstElement *element | gboolean gst_element_add_pad (GstElement *elemen | |||
| , GstPad *pad); | t, GstPad *pad); | |||
| gboolean gst_element_remove_pad (GstElement *element | gboolean gst_element_remove_pad (GstElement *elemen | |||
| , GstPad *pad); | t, GstPad *pad); | |||
| void gst_element_no_more_pads (GstElement *element | void gst_element_no_more_pads (GstElement *elemen | |||
| ); | t); | |||
| #ifndef GST_DISABLE_DEPRECATED | #ifndef GST_DISABLE_DEPRECATED | |||
| GstPad* gst_element_get_pad (GstElement *element, const gchar *name); | GstPad* gst_element_get_pad (GstElement *elemen t, const gchar *name); | |||
| #endif /* GST_DISABLE_DEPRECATED */ | #endif /* GST_DISABLE_DEPRECATED */ | |||
| GstPad* gst_element_get_static_pad (GstElement | GstPad* gst_element_get_static_pad (GstElement *elemen | |||
| *element, const gchar *name); | t, const gchar *name); | |||
| GstPad* gst_element_get_request_pad (GstElement | GstPad* gst_element_get_request_pad (GstElement *elemen | |||
| *element, const gchar *name); | t, const gchar *name); | |||
| void gst_element_release_request_pad (GstElement *element | GstPad* gst_element_request_pad (GstElement *elemen | |||
| , GstPad *pad); | t, | |||
| GstPadTemplate *tem | ||||
| GstIterator * gst_element_iterate_pads (GstElement * elemen | pl, | |||
| t); | const gchar * name, | |||
| GstIterator * gst_element_iterate_src_pads (GstElement * elemen | const GstCaps *caps); | |||
| t); | void gst_element_release_request_pad (GstElement *elemen | |||
| GstIterator * gst_element_iterate_sink_pads (GstElement * elemen | t, GstPad *pad); | |||
| t); | ||||
| GstIterator * gst_element_iterate_pads (GstElement * eleme | ||||
| nt); | ||||
| GstIterator * gst_element_iterate_src_pads (GstElement * eleme | ||||
| nt); | ||||
| GstIterator * gst_element_iterate_sink_pads (GstElement * eleme | ||||
| nt); | ||||
| /* event/query/format stuff */ | /* event/query/format stuff */ | |||
| gboolean gst_element_send_event (GstElement *element | gboolean gst_element_send_event (GstElement *elemen | |||
| , GstEvent *event); | t, GstEvent *event); | |||
| gboolean gst_element_seek (GstElement *element | gboolean gst_element_seek (GstElement *elemen | |||
| , gdouble rate, | t, gdouble rate, | |||
| GstFormat format, G | GstFormat format, | |||
| stSeekFlags flags, | GstSeekFlags flags, | |||
| GstSeekType cur_typ | GstSeekType cur_ty | |||
| e, gint64 cur, | pe, gint64 cur, | |||
| GstSeekType stop_ty | GstSeekType stop_t | |||
| pe, gint64 stop); | ype, gint64 stop); | |||
| G_CONST_RETURN GstQueryType* | G_CONST_RETURN GstQueryType* | |||
| gst_element_get_query_types (GstElement *element | gst_element_get_query_types (GstElement *elemen | |||
| ); | t); | |||
| gboolean gst_element_query (GstElement *element | gboolean gst_element_query (GstElement *elemen | |||
| , GstQuery *query); | t, GstQuery *query); | |||
| /* messages */ | /* messages */ | |||
| gboolean gst_element_post_message (GstElement * elemen t, GstMessage * message); | gboolean gst_element_post_message (GstElement * eleme nt, GstMessage * message); | |||
| /* error handling */ | /* error handling */ | |||
| /* gcc versions < 3.3 warn about NULL being passed as format to printf */ | /* gcc versions < 3.3 warn about NULL being passed as format to printf */ | |||
| #if (defined(GST_USING_PRINTF_EXTENSION) || !defined(__GNUC__) || (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)) | #if (defined(GST_USING_PRINTF_EXTENSION) || !defined(__GNUC__) || (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)) | |||
| gchar * _gst_element_error_printf (const gchar *format, ...); | gchar * _gst_element_error_printf (const gchar *forma t, ...); | |||
| #else | #else | |||
| gchar * _gst_element_error_printf (const gchar *format, ...) G_GNUC_PRINTF (1, 2); | gchar * _gst_element_error_printf (const gchar *forma t, ...) G_GNUC_PRINTF (1, 2); | |||
| #endif | #endif | |||
| void gst_element_message_full (GstElement * elemen | void gst_element_message_full (GstElement * eleme | |||
| t, GstMessageType type, | nt, GstMessageType type, | |||
| GQuark domain, gint | GQuark domain, gin | |||
| code, gchar * text, | t code, gchar * text, | |||
| gchar * debug, cons | gchar * debug, con | |||
| t gchar * file, | st gchar * file, | |||
| const gchar * funct | const gchar * func | |||
| ion, gint line); | tion, gint line); | |||
| /* state management */ | /* state management */ | |||
| gboolean gst_element_is_locked_state (GstElement *element | gboolean gst_element_is_locked_state (GstElement *elemen | |||
| ); | t); | |||
| gboolean gst_element_set_locked_state (GstElement *element | gboolean gst_element_set_locked_state (GstElement *elemen | |||
| , gboolean locked_state); | t, gboolean locked_state); | |||
| gboolean gst_element_sync_state_with_parent (GstElement *elem | gboolean gst_element_sync_state_with_parent (GstElement *ele | |||
| ent); | ment); | |||
| GstStateChangeReturn gst_element_get_state (GstElement * elemen | GstStateChangeReturn gst_element_get_state (GstElement * eleme | |||
| t, | nt, | |||
| GstState * state, | GstState * state, | |||
| GstState * pending, | GstState * pending | |||
| GstClockTime timeou | , | |||
| t); | GstClockTime timeo | |||
| GstStateChangeReturn gst_element_set_state (GstElement *element | ut); | |||
| , GstState state); | GstStateChangeReturn gst_element_set_state (GstElement *elemen | |||
| t, GstState state); | ||||
| void gst_element_abort_state (GstElement * elemen t); | void gst_element_abort_state (GstElement * eleme nt); | |||
| GstStateChangeReturn gst_element_change_state (GstElement * eleme nt, | GstStateChangeReturn gst_element_change_state (GstElement * eleme nt, | |||
| GstStateChange tran | GstStateChange tra | |||
| sition); | nsition); | |||
| GstStateChangeReturn gst_element_continue_state (GstElement * elemen | GstStateChangeReturn gst_element_continue_state (GstElement * eleme | |||
| t, | nt, | |||
| GstStateChangeRetu rn ret); | GstStateChangeRetu rn ret); | |||
| void gst_element_lost_state (GstElement * elemen | void gst_element_lost_state (GstElement * eleme | |||
| t); | nt); | |||
| void gst_element_lost_state_full (GstElement * eleme | ||||
| nt, gboolean new_base_time); | ||||
| /* factory management */ | /* factory management */ | |||
| GstElementFactory* gst_element_get_factory (GstElement *element ); | GstElementFactory* gst_element_get_factory (GstElement *elemen t); | |||
| G_END_DECLS | G_END_DECLS | |||
| #endif /* __GST_ELEMENT_H__ */ | #endif /* __GST_ELEMENT_H__ */ | |||
| End of changes. 74 change blocks. | ||||
| 252 lines changed or deleted | 442 lines changed or added | |||
This html diff was produced by rfcdiff 1.41. The latest version is available from http://tools.ietf.org/tools/rfcdiff/ | ||||