#ifndef foodefhfoo
#define foodefhfoo
-/* $Id$ */
-
/***
This file is part of PulseAudio.
#include <pulse/cdecl.h>
#include <pulse/sample.h>
+#include <pulse/version.h>
/** \file
* Global definitions */
PA_CONTEXT_TERMINATED /**< The connection was terminated cleanly */
} pa_context_state_t;
+/** Return non-zero if the passed state is one of the connected states. \since 0.9.11 */
+static inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x) {
+ return
+ x == PA_CONTEXT_CONNECTING ||
+ x == PA_CONTEXT_AUTHORIZING ||
+ x == PA_CONTEXT_SETTING_NAME ||
+ x == PA_CONTEXT_READY;
+}
+
+/** \cond fulldocs */
+#define PA_CONTEXT_IS_GOOD PA_CONTEXT_IS_GOOD
+/** \endcond */
+
/** The state of a stream */
typedef enum pa_stream_state {
- PA_STREAM_UNCONNECTED, /**< The stream is not yet connected to any sink or source */
+ PA_STREAM_UNCONNECTED, /**< The stream is not yet connected to any sink or source */
PA_STREAM_CREATING, /**< The stream is being created */
PA_STREAM_READY, /**< The stream is established, you may pass audio data to it now */
PA_STREAM_FAILED, /**< An error occured that made the stream invalid */
PA_STREAM_TERMINATED /**< The stream has been terminated cleanly */
} pa_stream_state_t;
+/** Return non-zero if the passed state is one of the connected states. \since 0.9.11 */
+static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x) {
+ return
+ x == PA_STREAM_CREATING ||
+ x == PA_STREAM_READY;
+}
+
+/** \cond fulldocs */
+#define PA_STREAM_IS_GOOD PA_STREAM_IS_GOOD
+/** \endcond */
+
/** The state of an operation */
typedef enum pa_operation_state {
PA_OPERATION_RUNNING, /**< The operation is still running */
/** An invalid index */
#define PA_INVALID_INDEX ((uint32_t) -1)
-/** Some special flags for contexts. \since 0.8 */
+/** Some special flags for contexts. */
typedef enum pa_context_flags {
- PA_CONTEXT_NOAUTOSPAWN = 1 /**< Disabled autospawning of the PulseAudio daemon if required */
+ PA_CONTEXT_NOAUTOSPAWN = 1
+ /**< Disabled autospawning of the PulseAudio daemon if required */
} pa_context_flags_t;
+/** \cond fulldocs */
+/* Allow clients to check with #ifdef for those flags */
+#define PA_CONTEXT_NOAUTOSPAWN PA_CONTEXT_NOAUTOSPAWN
+/** \endcond */
+
/** The direction of a pa_stream object */
typedef enum pa_stream_direction {
PA_STREAM_NODIRECTION, /**< Invalid direction */
PA_STREAM_UPLOAD /**< Sample upload stream */
} pa_stream_direction_t;
-/** Some special flags for stream connections. \since 0.6 */
+/** Some special flags for stream connections. */
typedef enum pa_stream_flags {
- PA_STREAM_START_CORKED = 1, /**< Create the stream corked, requiring an explicit pa_stream_cork() call to uncork it. */
- PA_STREAM_INTERPOLATE_TIMING = 2, /**< Interpolate the latency for
- * this stream. When enabled,
- * pa_stream_get_latency() and
- * pa_stream_get_time() will try
- * to estimate the current
- * record/playback time based on
- * the local time that passed
- * since the last timing info
- * update. Using this option
- * has the advantage of not
- * requiring a whole roundtrip
- * when the current
- * playback/recording time is
- * needed. Consider using this
- * option when requesting
- * latency information
- * frequently. This is
- * especially useful on long
- * latency network
- * connections. It makes a lot
- * of sense to combine this
- * option with
- * PA_STREAM_AUTO_TIMING_UPDATE. */
- PA_STREAM_NOT_MONOTONOUS = 4, /**< Don't force the time to
- * increase monotonically. If
- * this option is enabled,
- * pa_stream_get_time() will not
- * necessarily return always
- * monotonically increasing time
- * values on each call. This may
- * confuse applications which
- * cannot deal with time going
- * 'backwards', but has the
- * advantage that bad transport
- * latency estimations that
- * caused the time to to jump
- * ahead can be corrected
- * quickly, without the need to
- * wait. */
- PA_STREAM_AUTO_TIMING_UPDATE = 8 /**< If set timing update requests
- * are issued periodically
- * automatically. Combined with
- * PA_STREAM_INTERPOLATE_TIMING
- * you will be able to query the
- * current time and latency with
- * pa_stream_get_time() and
- * pa_stream_get_latency() at
- * all times without a packet
- * round trip.*/
+
+ PA_STREAM_START_CORKED = 0x0001U,
+ /**< Create the stream corked, requiring an explicit
+ * pa_stream_cork() call to uncork it. */
+
+ PA_STREAM_INTERPOLATE_TIMING = 0x0002U,
+ /**< Interpolate the latency for this stream. When enabled,
+ * pa_stream_get_latency() and pa_stream_get_time() will try to
+ * estimate the current record/playback time based on the local
+ * time that passed since the last timing info update. Using this
+ * option has the advantage of not requiring a whole roundtrip
+ * when the current playback/recording time is needed. Consider
+ * using this option when requesting latency information
+ * frequently. This is especially useful on long latency network
+ * connections. It makes a lot of sense to combine this option
+ * with PA_STREAM_AUTO_TIMING_UPDATE. */
+
+ PA_STREAM_NOT_MONOTONIC = 0x0004U,
+ /**< Don't force the time to increase monotonically. If this
+ * option is enabled, pa_stream_get_time() will not necessarily
+ * return always monotonically increasing time values on each
+ * call. This may confuse applications which cannot deal with time
+ * going 'backwards', but has the advantage that bad transport
+ * latency estimations that caused the time to to jump ahead can
+ * be corrected quickly, without the need to wait. (Please note
+ * that this flag was named PA_STREAM_NOT_MONOTONOUS in releases
+ * prior to 0.9.11. The old name is still defined too, for
+ * compatibility reasons. */
+
+ PA_STREAM_AUTO_TIMING_UPDATE = 0x0008U,
+ /**< If set timing update requests are issued periodically
+ * automatically. Combined with PA_STREAM_INTERPOLATE_TIMING you
+ * will be able to query the current time and latency with
+ * pa_stream_get_time() and pa_stream_get_latency() at all times
+ * without a packet round trip.*/
+
+ PA_STREAM_NO_REMAP_CHANNELS = 0x0010U,
+ /**< Don't remap channels by their name, instead map them simply
+ * by their index. Implies PA_STREAM_NO_REMIX_CHANNELS. Only
+ * supported when the server is at least PA 0.9.8. It is ignored
+ * on older servers.\since 0.9.8 */
+
+ PA_STREAM_NO_REMIX_CHANNELS = 0x0020U,
+ /**< When remapping channels by name, don't upmix or downmix them
+ * to related channels. Copy them into matching channels of the
+ * device 1:1. Only supported when the server is at least PA
+ * 0.9.8. It is ignored on older servers. \since 0.9.8 */
+
+ PA_STREAM_FIX_FORMAT = 0x0040U,
+ /**< Use the sample format of the sink/device this stream is being
+ * connected to, and possibly ignore the format the sample spec
+ * contains -- but you still have to pass a valid value in it as a
+ * hint to PulseAudio what would suit your stream best. If this is
+ * used you should query the used sample format after creating the
+ * stream by using pa_stream_get_sample_spec(). Also, if you
+ * specified manual buffer metrics it is recommended to update
+ * them with pa_stream_set_buffer_attr() to compensate for the
+ * changed frame sizes. Only supported when the server is at least
+ * PA 0.9.8. It is ignored on older servers. \since 0.9.8 */
+
+ PA_STREAM_FIX_RATE = 0x0080U,
+ /**< Use the sample rate of the sink, and possibly ignore the rate
+ * the sample spec contains. Usage similar to
+ * PA_STREAM_FIX_FORMAT.Only supported when the server is at least
+ * PA 0.9.8. It is ignored on older servers. \since 0.9.8 */
+
+ PA_STREAM_FIX_CHANNELS = 0x0100,
+ /**< Use the number of channels and the channel map of the sink,
+ * and possibly ignore the number of channels and the map the
+ * sample spec and the passed channel map contains. Usage similar
+ * to PA_STREAM_FIX_FORMAT. Only supported when the server is at
+ * least PA 0.9.8. It is ignored on older servers. \since 0.9.8 */
+
+ PA_STREAM_DONT_MOVE = 0x0200U,
+ /**< Don't allow moving of this stream to another
+ * sink/device. Useful if you use any of the PA_STREAM_FIX_ flags
+ * and want to make sure that resampling never takes place --
+ * which might happen if the stream is moved to another
+ * sink/source whith a different sample spec/channel map. Only
+ * supported when the server is at least PA 0.9.8. It is ignored
+ * on older servers. \since 0.9.8 */
+
+ PA_STREAM_VARIABLE_RATE = 0x0400U,
+ /**< Allow dynamic changing of the sampling rate during playback
+ * with pa_stream_update_sample_rate(). Only supported when the
+ * server is at least PA 0.9.8. It is ignored on older
+ * servers. \since 0.9.8 */
+
+ PA_STREAM_PEAK_DETECT = 0x0800U,
+ /**< Find peaks instead of resampling. \since 0.9.11 */
+
+ PA_STREAM_START_MUTED = 0x1000U,
+ /**< Create in muted state. If neither PA_STREAM_START_UNMUTED nor
+ * PA_STREAM_START_MUTED it is left to the server to decide
+ * whether to create the stream in muted or in unmuted
+ * state. \since 0.9.11 */
+
+ PA_STREAM_ADJUST_LATENCY = 0x2000U,
+ /**< Try to adjust the latency of the sink/source based on the
+ * requested buffer metrics and adjust buffer metrics
+ * accordingly. Also see pa_buffer_attr. This option may not be
+ * specified at the same time as PA_STREAM_EARLY_REQUESTS. \since
+ * 0.9.11 */
+
+ PA_STREAM_EARLY_REQUESTS = 0x4000U,
+ /**< Enable compatibility mode for legacy clients that rely on a
+ * "classic" hardware device fragment-style playback model. If
+ * this option is set, the minreq value of the buffer metrics gets
+ * a new meaning: instead of just specifying that no requests
+ * asking for less new data than this value will be made to the
+ * client it will also guarantee that requests are generated as
+ * early as this limit is reached. This flag should only be set in
+ * very few situations where compatiblity with a fragment-based
+ * playback model needs to be kept and the client applications
+ * cannot deal with data requests that are delayed to the latest
+ * moment possible. (Usually these are programs that use usleep()
+ * or a similar call in their playback loops instead of sleeping
+ * on the device itself.) Also see pa_buffer_attr. This option may
+ * not be specified at the same time as
+ * PA_STREAM_ADJUST_LATENCY. \since 0.9.12 */
+
+ PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND = 0x8000U,
+ /**< If set this stream won't be taken into account when we it is
+ * checked whether the device this stream is connected to should
+ * auto-suspend. \since 0.9.15 */
+
+ PA_STREAM_START_UNMUTED = 0x10000U
+ /**< Create in unmuted state. If neither PA_STREAM_START_UNMUTED
+ * nor PA_STREAM_START_MUTED it is left to the server to decide
+ * whether to create the stream in muted or in unmuted
+ * state. \since 0.9.15 */
+
} pa_stream_flags_t;
+/** \cond fulldocs */
+
+/* English is an evil language */
+#define PA_STREAM_NOT_MONOTONOUS PA_STREAM_NOT_MONOTONIC
+
+/* Allow clients to check with #ifdef for those flags */
+#define PA_STREAM_START_CORKED PA_STREAM_START_CORKED
+#define PA_STREAM_INTERPOLATE_TIMING PA_STREAM_INTERPOLATE_TIMING
+#define PA_STREAM_NOT_MONOTONIC PA_STREAM_NOT_MONOTONIC
+#define PA_STREAM_AUTO_TIMING_UPDATE PA_STREAM_AUTO_TIMING_UPDATE
+#define PA_STREAM_NO_REMAP_CHANNELS PA_STREAM_NO_REMAP_CHANNELS
+#define PA_STREAM_NO_REMIX_CHANNELS PA_STREAM_NO_REMIX_CHANNELS
+#define PA_STREAM_FIX_FORMAT PA_STREAM_FIX_FORMAT
+#define PA_STREAM_FIX_RATE PA_STREAM_FIX_RATE
+#define PA_STREAM_FIX_CHANNELS PA_STREAM_FIX_CHANNELS
+#define PA_STREAM_DONT_MOVE PA_STREAM_DONT_MOVE
+#define PA_STREAM_VARIABLE_RATE PA_STREAM_VARIABLE_RATE
+#define PA_STREAM_PEAK_DETECT PA_STREAM_PEAK_DETECT
+#define PA_STREAM_START_MUTED PA_STREAM_START_MUTED
+#define PA_STREAM_ADJUST_LATENCY PA_STREAM_ADJUST_LATENCY
+#define PA_STREAM_EARLY_REQUESTS PA_STREAM_EARLY_REQUESTS
+#define PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND
+#define PA_STREAM_START_UNMUTED PA_STREAM_START_UNMUTED
+
+/** \endcond */
+
/** Playback and record buffer metrics */
typedef struct pa_buffer_attr {
- uint32_t maxlength; /**< Maximum length of the buffer */
- uint32_t tlength; /**< Playback only: target length of the buffer. The server tries to assure that at least tlength bytes are always available in the buffer */
- uint32_t prebuf; /**< Playback only: pre-buffering. The server does not start with playback before at least prebug bytes are available in the buffer */
- uint32_t minreq; /**< Playback only: minimum request. The server does not request less than minreq bytes from the client, instead waints until the buffer is free enough to request more bytes at once */
- uint32_t fragsize; /**< Recording only: fragment size. The server sends data in blocks of fragsize bytes size. Large values deminish interactivity with other operations on the connection context but decrease control overhead. */
+ uint32_t maxlength;
+ /**< Maximum length of the buffer. Setting this to (uint32_t) -1
+ * will initialize this to the maximum value supported by server,
+ * which is recommended. */
+
+ uint32_t tlength;
+ /**< Playback only: target length of the buffer. The server tries
+ * to assure that at least tlength bytes are always available in
+ * the per-stream server-side playback buffer. It is recommended
+ * to set this to (uint32_t) -1, which will initialize this to a
+ * value that is deemed sensible by the server. However, this
+ * value will default to something like 2s, i.e. for applications
+ * that have specific latency requirements this value should be
+ * set to the maximum latency that the application can deal
+ * with. When PA_STREAM_ADJUST_LATENCY is not set this value will
+ * influence only the per-stream playback buffer size. When
+ * PA_STREAM_ADJUST_LATENCY is set the overall latency of the sink
+ * plus the playback buffer size is configured to this value. Set
+ * PA_STREAM_ADJUST_LATENCY if you are interested in adjusting the
+ * overall latency. Don't set it if you are interested in
+ * configuring the server-sider per-stream playback buffer
+ * size. */
+
+ uint32_t prebuf;
+ /**< Playback only: pre-buffering. The server does not start with
+ * playback before at least prebug bytes are available in the
+ * buffer. It is recommended to set this to (uint32_t) -1, which
+ * will initialize this to the same value as tlength, whatever
+ * that may be. Initialize to 0 to enable manual start/stop
+ * control of the stream. This means that playback will not stop
+ * on underrun and playback will not start automatically. Instead
+ * pa_stream_corked() needs to be called explicitly. If you set
+ * this value to 0 you should also set PA_STREAM_START_CORKED. */
+
+ uint32_t minreq;
+ /**< Playback only: minimum request. The server does not request
+ * less than minreq bytes from the client, instead waits until the
+ * buffer is free enough to request more bytes at once. It is
+ * recommended to set this to (uint32_t) -1, which will initialize
+ * this to a value that is deemed sensible by the server. This
+ * should be set to a value that gives PulseAudio enough time to
+ * move the data from the per-stream playback buffer into the
+ * hardware playback buffer. */
+
+ uint32_t fragsize;
+ /**< Recording only: fragment size. The server sends data in
+ * blocks of fragsize bytes size. Large values deminish
+ * interactivity with other operations on the connection context
+ * but decrease control overhead. It is recommended to set this to
+ * (uint32_t) -1, which will initialize this to a value that is
+ * deemed sensible by the server. However, this value will default
+ * to something like 2s, i.e. for applications that have specific
+ * latency requirements this value should be set to the maximum
+ * latency that the application can deal with. If
+ * PA_STREAM_ADJUST_LATENCY is set the overall source latency will
+ * be adjusted according to this value. If it is not set the
+ * source latency is left unmodified. */
+
} pa_buffer_attr;
/** Error values as used by pa_context_errno(). Use pa_strerror() to convert these values to human readable strings */
PA_ERR_MODINITFAILED, /**< Module initialization failed */
PA_ERR_BADSTATE, /**< Bad state */
PA_ERR_NODATA, /**< No data */
- PA_ERR_VERSION, /**< Incompatible protocol version \since 0.8 */
- PA_ERR_TOOLARGE, /**< Data too large \since 0.8.1 */
+ PA_ERR_VERSION, /**< Incompatible protocol version */
+ PA_ERR_TOOLARGE, /**< Data too large */
PA_ERR_NOTSUPPORTED, /**< Operation not supported \since 0.9.5 */
+ PA_ERR_UNKNOWN, /**< The error code was unknown to the client */
+ PA_ERR_NOEXTENSION, /**< Extension does not exist. \since 0.9.12 */
+ PA_ERR_OBSOLETE, /**< Obsolete functionality. \since 0.9.15 */
PA_ERR_MAX /**< Not really an error but the first invalid error code */
};
/** Subscription event mask, as used by pa_context_subscribe() */
typedef enum pa_subscription_mask {
- PA_SUBSCRIPTION_MASK_NULL = 0, /**< No events */
- PA_SUBSCRIPTION_MASK_SINK = 1, /**< Sink events */
- PA_SUBSCRIPTION_MASK_SOURCE = 2, /**< Source events */
- PA_SUBSCRIPTION_MASK_SINK_INPUT = 4, /**< Sink input events */
- PA_SUBSCRIPTION_MASK_SOURCE_OUTPUT = 8, /**< Source output events */
- PA_SUBSCRIPTION_MASK_MODULE = 16, /**< Module events */
- PA_SUBSCRIPTION_MASK_CLIENT = 32, /**< Client events */
- PA_SUBSCRIPTION_MASK_SAMPLE_CACHE = 64, /**< Sample cache events */
- PA_SUBSCRIPTION_MASK_SERVER = 128, /**< Other global server changes. \since 0.4 */
- PA_SUBSCRIPTION_MASK_AUTOLOAD = 256, /**< Autoload table events. \since 0.5 */
- PA_SUBSCRIPTION_MASK_ALL = 511 /**< Catch all events \since 0.8 */
+ PA_SUBSCRIPTION_MASK_NULL = 0x0000U,
+ /**< No events */
+
+ PA_SUBSCRIPTION_MASK_SINK = 0x0001U,
+ /**< Sink events */
+
+ PA_SUBSCRIPTION_MASK_SOURCE = 0x0002U,
+ /**< Source events */
+
+ PA_SUBSCRIPTION_MASK_SINK_INPUT = 0x0004U,
+ /**< Sink input events */
+
+ PA_SUBSCRIPTION_MASK_SOURCE_OUTPUT = 0x0008U,
+ /**< Source output events */
+
+ PA_SUBSCRIPTION_MASK_MODULE = 0x0010U,
+ /**< Module events */
+
+ PA_SUBSCRIPTION_MASK_CLIENT = 0x0020U,
+ /**< Client events */
+
+ PA_SUBSCRIPTION_MASK_SAMPLE_CACHE = 0x0040U,
+ /**< Sample cache events */
+
+ PA_SUBSCRIPTION_MASK_SERVER = 0x0080U,
+ /**< Other global server changes. */
+
+/** \cond fulldocs */
+ PA_SUBSCRIPTION_MASK_AUTOLOAD = 0x0100U,
+ /**< \deprecated Autoload table events. */
+/** \endcond */
+
+ PA_SUBSCRIPTION_MASK_CARD = 0x0200U,
+ /**< Card events. \since 0.9.15 */
+
+ PA_SUBSCRIPTION_MASK_ALL = 0x02ffU
+ /**< Catch all events */
} pa_subscription_mask_t;
/** Subscription event types, as used by pa_context_subscribe() */
typedef enum pa_subscription_event_type {
- PA_SUBSCRIPTION_EVENT_SINK = 0, /**< Event type: Sink */
- PA_SUBSCRIPTION_EVENT_SOURCE = 1, /**< Event type: Source */
- PA_SUBSCRIPTION_EVENT_SINK_INPUT = 2, /**< Event type: Sink input */
- PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT = 3, /**< Event type: Source output */
- PA_SUBSCRIPTION_EVENT_MODULE = 4, /**< Event type: Module */
- PA_SUBSCRIPTION_EVENT_CLIENT = 5, /**< Event type: Client */
- PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE = 6, /**< Event type: Sample cache item */
- PA_SUBSCRIPTION_EVENT_SERVER = 7, /**< Event type: Global server change, only occuring with PA_SUBSCRIPTION_EVENT_CHANGE. \since 0.4 */
- PA_SUBSCRIPTION_EVENT_AUTOLOAD = 8, /**< Event type: Autoload table changes. \since 0.5 */
- PA_SUBSCRIPTION_EVENT_FACILITY_MASK = 15, /**< A mask to extract the event type from an event value */
-
- PA_SUBSCRIPTION_EVENT_NEW = 0, /**< A new object was created */
- PA_SUBSCRIPTION_EVENT_CHANGE = 16, /**< A property of the object was modified */
- PA_SUBSCRIPTION_EVENT_REMOVE = 32, /**< An object was removed */
- PA_SUBSCRIPTION_EVENT_TYPE_MASK = 16+32 /**< A mask to extract the event operation from an event value */
+ PA_SUBSCRIPTION_EVENT_SINK = 0x0000U,
+ /**< Event type: Sink */
+
+ PA_SUBSCRIPTION_EVENT_SOURCE = 0x0001U,
+ /**< Event type: Source */
+
+ PA_SUBSCRIPTION_EVENT_SINK_INPUT = 0x0002U,
+ /**< Event type: Sink input */
+
+ PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT = 0x0003U,
+ /**< Event type: Source output */
+
+ PA_SUBSCRIPTION_EVENT_MODULE = 0x0004U,
+ /**< Event type: Module */
+
+ PA_SUBSCRIPTION_EVENT_CLIENT = 0x0005U,
+ /**< Event type: Client */
+
+ PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE = 0x0006U,
+ /**< Event type: Sample cache item */
+
+ PA_SUBSCRIPTION_EVENT_SERVER = 0x0007U,
+ /**< Event type: Global server change, only occuring with PA_SUBSCRIPTION_EVENT_CHANGE. */
+
+/** \cond fulldocs */
+ PA_SUBSCRIPTION_EVENT_AUTOLOAD = 0x0008U,
+ /**< \deprecated Event type: Autoload table changes. */
+/** \endcond */
+
+ PA_SUBSCRIPTION_EVENT_CARD = 0x0009U,
+ /**< Event type: Card \since 0.9.15 */
+
+ PA_SUBSCRIPTION_EVENT_FACILITY_MASK = 0x000FU,
+ /**< A mask to extract the event type from an event value */
+
+ PA_SUBSCRIPTION_EVENT_NEW = 0x0000U,
+ /**< A new object was created */
+
+ PA_SUBSCRIPTION_EVENT_CHANGE = 0x0010U,
+ /**< A property of the object was modified */
+
+ PA_SUBSCRIPTION_EVENT_REMOVE = 0x0020U,
+ /**< An object was removed */
+
+ PA_SUBSCRIPTION_EVENT_TYPE_MASK = 0x0030U
+ /**< A mask to extract the event operation from an event value */
+
} pa_subscription_event_type_t;
/** Return one if an event type t matches an event mask bitfield */
* source_usec+buffer_usec+transport_usec-sink_usec. (Take care of
* sign issues!) When connected to a monitor source sink_usec contains
* the latency of the owning sink. The two latency estimations
- * described here are implemented in pa_stream_get_latency().*/
+ * described here are implemented in pa_stream_get_latency(). Please
+ * note that this structure can be extended as part of evolutionary
+ * API updates at any time in any new release.*/
typedef struct pa_timing_info {
- struct timeval timestamp; /**< The time when this timing info structure was current */
- int synchronized_clocks; /**< Non-zero if the local and the
- * remote machine have synchronized
- * clocks. If synchronized clocks are
- * detected transport_usec becomes much
- * more reliable. However, the code that
- * detects synchronized clocks is very
- * limited und unreliable itself. \since
- * 0.5 */
-
- pa_usec_t sink_usec; /**< Time in usecs a sample takes to be played on the sink. For playback streams and record streams connected to a monitor source. */
- pa_usec_t source_usec; /**< Time in usecs a sample takes from being recorded to being delivered to the application. Only for record streams. \since 0.5*/
- pa_usec_t transport_usec; /**< Estimated time in usecs a sample takes to be transferred to/from the daemon. For both playback and record streams. \since 0.5 */
-
- int playing; /**< Non-zero when the stream is currently playing. Only for playback streams. */
-
- int write_index_corrupt; /**< Non-zero if write_index is not
- * up-to-date because a local write
- * command that corrupted it has been
- * issued in the time since this latency
- * info was current . Only write
- * commands with SEEK_RELATIVE_ON_READ
- * and SEEK_RELATIVE_END can corrupt
- * write_index. \since 0.8 */
- int64_t write_index; /**< Current write index into the
- * playback buffer in bytes. Think twice before
- * using this for seeking purposes: it
- * might be out of date a the time you
- * want to use it. Consider using
- * PA_SEEK_RELATIVE instead. \since
- * 0.8 */
-
- int read_index_corrupt; /**< Non-zero if read_index is not
- * up-to-date because a local pause or
- * flush request that corrupted it has
- * been issued in the time since this
- * latency info was current. \since 0.8 */
-
- int64_t read_index; /**< Current read index into the
- * playback buffer in bytes. Think twice before
- * using this for seeking purposes: it
- * might be out of date a the time you
- * want to use it. Consider using
- * PA_SEEK_RELATIVE_ON_READ
- * instead. \since 0.8 */
+ struct timeval timestamp;
+ /**< The time when this timing info structure was current */
+
+ int synchronized_clocks;
+ /**< Non-zero if the local and the remote machine have
+ * synchronized clocks. If synchronized clocks are detected
+ * transport_usec becomes much more reliable. However, the code
+ * that detects synchronized clocks is very limited und unreliable
+ * itself. */
+
+ pa_usec_t sink_usec;
+ /**< Time in usecs a sample takes to be played on the sink. For
+ * playback streams and record streams connected to a monitor
+ * source. */
+
+ pa_usec_t source_usec;
+ /**< Time in usecs a sample takes from being recorded to being
+ * delivered to the application. Only for record streams. */
+
+ pa_usec_t transport_usec;
+ /**< Estimated time in usecs a sample takes to be transferred
+ * to/from the daemon. For both playback and record streams. */
+
+ int playing;
+ /**< Non-zero when the stream is currently not underrun and data
+ * is being passed on to the device. Only for playback
+ * streams. This field does not say whether the data is actually
+ * already being played. To determine this check whether
+ * since_underrun (converted to usec) is larger than sink_usec.*/
+
+ int write_index_corrupt;
+ /**< Non-zero if write_index is not up-to-date because a local
+ * write command that corrupted it has been issued in the time
+ * since this latency info was current . Only write commands with
+ * SEEK_RELATIVE_ON_READ and SEEK_RELATIVE_END can corrupt
+ * write_index. */
+
+ int64_t write_index;
+ /**< Current write index into the playback buffer in bytes. Think
+ * twice before using this for seeking purposes: it might be out
+ * of date a the time you want to use it. Consider using
+ * PA_SEEK_RELATIVE instead. */
+
+ int read_index_corrupt;
+ /**< Non-zero if read_index is not up-to-date because a local
+ * pause or flush request that corrupted it has been issued in the
+ * time since this latency info was current. */
+
+ int64_t read_index;
+ /**< Current read index into the playback buffer in bytes. Think
+ * twice before using this for seeking purposes: it might be out
+ * of date a the time you want to use it. Consider using
+ * PA_SEEK_RELATIVE_ON_READ instead. */
+
+ pa_usec_t configured_sink_usec;
+ /**< The configured latency for the sink. \since 0.9.11 */
+
+ pa_usec_t configured_source_usec;
+ /**< The configured latency for * the source. \since 0.9.11 */
+
+ int64_t since_underrun;
+ /**< Bytes that were handed to the sink since the last underrun
+ * happened, or since playback started again after the last
+ * underrun. playing will tell you which case it is. \since
+ * 0.9.11 */
+
} pa_timing_info;
/** A structure for the spawn api. This may be used to integrate auto
* waitpid() is used on the child's PID. The spawn routine will not
* block or ignore SIGCHLD signals, since this cannot be done in a
* thread compatible way. You might have to do this in
- * prefork/postfork. \since 0.4 */
+ * prefork/postfork. */
typedef struct pa_spawn_api {
- void (*prefork)(void); /**< Is called just before the fork in the parent process. May be NULL. */
- void (*postfork)(void); /**< Is called immediately after the fork in the parent process. May be NULL.*/
- void (*atfork)(void); /**< Is called immediately after the
- * fork in the child process. May be
- * NULL. It is not safe to close all
- * file descriptors in this function
- * unconditionally, since a UNIX socket
- * (created using socketpair()) is
- * passed to the new process. */
+ void (*prefork)(void);
+ /**< Is called just before the fork in the parent process. May be
+ * NULL. */
+
+ void (*postfork)(void);
+ /**< Is called immediately after the fork in the parent
+ * process. May be NULL.*/
+
+ void (*atfork)(void);
+ /**< Is called immediately after the fork in the child
+ * process. May be NULL. It is not safe to close all file
+ * descriptors in this function unconditionally, since a UNIX
+ * socket (created using socketpair()) is passed to the new
+ * process. */
} pa_spawn_api;
-/** Seek type for pa_stream_write(). \since 0.8*/
+/** Seek type for pa_stream_write(). */
typedef enum pa_seek_mode {
- PA_SEEK_RELATIVE = 0, /**< Seek relatively to the write index */
- PA_SEEK_ABSOLUTE = 1, /**< Seek relatively to the start of the buffer queue */
- PA_SEEK_RELATIVE_ON_READ = 2, /**< Seek relatively to the read index. */
- PA_SEEK_RELATIVE_END = 3 /**< Seek relatively to the current end of the buffer queue. */
+ PA_SEEK_RELATIVE = 0,
+ /**< Seek relatively to the write index */
+
+ PA_SEEK_ABSOLUTE = 1,
+ /**< Seek relatively to the start of the buffer queue */
+
+ PA_SEEK_RELATIVE_ON_READ = 2,
+ /**< Seek relatively to the read index. */
+
+ PA_SEEK_RELATIVE_END = 3
+ /**< Seek relatively to the current end of the buffer queue. */
} pa_seek_mode_t;
-/** Special sink flags. \since 0.8 */
+/** Special sink flags. */
typedef enum pa_sink_flags {
- PA_SINK_HW_VOLUME_CTRL = 1, /**< Supports hardware volume control */
- PA_SINK_LATENCY = 2, /**< Supports latency querying */
- PA_SINK_HARDWARE = 4, /**< Is a hardware sink of some kind, in contrast to "virtual"/software sinks \since 0.9.3 */
- PA_SINK_NETWORK = 8 /**< Is a networked sink of some kind. \since 0.9.7 */
+ PA_SINK_HW_VOLUME_CTRL = 0x0001U,
+ /**< Supports hardware volume control */
+
+ PA_SINK_LATENCY = 0x0002U,
+ /**< Supports latency querying */
+
+ PA_SINK_HARDWARE = 0x0004U,
+ /**< Is a hardware sink of some kind, in contrast to
+ * "virtual"/software sinks \since 0.9.3 */
+
+ PA_SINK_NETWORK = 0x0008U,
+ /**< Is a networked sink of some kind. \since 0.9.7 */
+
+ PA_SINK_HW_MUTE_CTRL = 0x0010U,
+ /**< Supports hardware mute control \since 0.9.11 */
+
+ PA_SINK_DECIBEL_VOLUME = 0x0020U,
+ /**< Volume can be translated to dB with pa_sw_volume_to_dB()
+ * \since 0.9.11 */
+
+ PA_SINK_FLAT_VOLUME = 0x0040U
+ /**< This sink is in flat volume mode, i.e. always the maximum of
+ * the volume of all connected inputs. \since 0.9.15 */
} pa_sink_flags_t;
-/** Special source flags. \since 0.8 */
+/** \cond fulldocs */
+#define PA_SINK_HW_VOLUME_CTRL PA_SINK_HW_VOLUME_CTRL
+#define PA_SINK_LATENCY PA_SINK_LATENCY
+#define PA_SINK_HARDWARE PA_SINK_HARDWARE
+#define PA_SINK_NETWORK PA_SINK_NETWORK
+#define PA_SINK_HW_MUTE_CTRL PA_SINK_HW_MUTE_CTRL
+#define PA_SINK_DECIBEL_VOLUME PA_SINK_DECIBEL_VOLUME
+#define PA_SINK_FLAT_VOLUME PA_SINK_FLAT_VOLUME
+/** \endcond */
+
+/** Sink state. \since 0.9.15 */
+typedef enum pa_sink_state { /* enum serialized in u8 */
+ PA_SINK_INVALID_STATE = -1,
+ /**< This state is used when the server does not support sink state introspection \since 0.9.15 */
+
+ PA_SINK_RUNNING = 0,
+ /**< Running, sink is playing and used by at least one non-corked sink-input \since 0.9.15 */
+
+ PA_SINK_IDLE = 1,
+ /**< When idle, the sink is playing but there is no non-corked sink-input attached to it \since 0.9.15 */
+
+ PA_SINK_SUSPENDED = 2,
+ /**< When suspended, actual sink access can be closed, for instance \since 0.9.15 */
+
+/** \cond fulldocs */
+ /* PRIVATE: Server-side values -- DO NOT USE THIS ON THE CLIENT
+ * SIDE! These values are *not* considered part of the official PA
+ * API/ABI. If you use them your application might break when PA
+ * is upgraded. Also, please note that these values are not useful
+ * on the client side anyway. */
+
+ PA_SINK_INIT = -2,
+ /**< Initialization state */
+
+ PA_SINK_UNLINKED = -3
+ /**< The state when the sink is getting unregistered and removed from client access */
+/** \endcond */
+
+} pa_sink_state_t;
+
+/** Returns non-zero if sink is playing: running or idle. \since 0.9.15 */
+static inline int PA_SINK_IS_OPENED(pa_sink_state_t x) {
+ return x == PA_SINK_RUNNING || x == PA_SINK_IDLE;
+}
+
+/** \cond fulldocs */
+#define PA_SINK_INVALID_STATE PA_SINK_INVALID_STATE
+#define PA_SINK_RUNNING PA_SINK_RUNNING
+#define PA_SINK_IDLE PA_SINK_IDLE
+#define PA_SINK_SUSPENDED PA_SINK_SUSPENDED
+#define PA_SINK_IS_OPENED PA_SINK_IS_OPENED
+/** \endcond */
+
+/** Special source flags. */
typedef enum pa_source_flags {
- PA_SOURCE_HW_VOLUME_CTRL = 1, /**< Supports hardware volume control */
- PA_SOURCE_LATENCY = 2, /**< Supports latency querying */
- PA_SOURCE_HARDWARE = 4, /**< Is a hardware source of some kind, in contrast to "virtual"/software source \since 0.9.3 */
- PA_SOURCE_NETWORK = 8 /**< Is a networked sink of some kind. \since 0.9.7 */
+ PA_SOURCE_HW_VOLUME_CTRL = 0x0001U,
+ /**< Supports hardware volume control */
+
+ PA_SOURCE_LATENCY = 0x0002U,
+ /**< Supports latency querying */
+
+ PA_SOURCE_HARDWARE = 0x0004U,
+ /**< Is a hardware source of some kind, in contrast to
+ * "virtual"/software source \since 0.9.3 */
+
+ PA_SOURCE_NETWORK = 0x0008U,
+ /**< Is a networked source of some kind. \since 0.9.7 */
+
+ PA_SOURCE_HW_MUTE_CTRL = 0x0010U,
+ /**< Supports hardware mute control \since 0.9.11 */
+
+ PA_SOURCE_DECIBEL_VOLUME = 0x0020U
+ /**< Volume can be translated to dB with pa_sw_volume_to_dB()
+ * \since 0.9.11 */
} pa_source_flags_t;
+/** \cond fulldocs */
+#define PA_SOURCE_HW_VOLUME_CTRL PA_SOURCE_HW_VOLUME_CTRL
+#define PA_SOURCE_LATENCY PA_SOURCE_LATENCY
+#define PA_SOURCE_HARDWARE PA_SOURCE_HARDWARE
+#define PA_SOURCE_NETWORK PA_SOURCE_NETWORK
+#define PA_SOURCE_HW_MUTE_CTRL PA_SOURCE_HW_MUTE_CTRL
+#define PA_SOURCE_DECIBEL_VOLUME PA_SOURCE_DECIBEL_VOLUME
+/** \endcond */
+
+/** Source state. \since 0.9.15 */
+typedef enum pa_source_state {
+ PA_SOURCE_INVALID_STATE = -1,
+ /**< This state is used when the server does not support source state introspection \since 0.9.15 */
+
+ PA_SOURCE_RUNNING = 0,
+ /**< Running, source is recording and used by at least one non-corked source-output \since 0.9.15 */
+
+ PA_SOURCE_IDLE = 1,
+ /**< When idle, the source is still recording but there is no non-corked source-output \since 0.9.15 */
+
+ PA_SOURCE_SUSPENDED = 2,
+ /**< When suspended, actual source access can be closed, for instance \since 0.9.15 */
+
+/** \cond fulldocs */
+ /* PRIVATE: Server-side values -- DO NOT USE THIS ON THE CLIENT
+ * SIDE! These values are *not* considered part of the official PA
+ * API/ABI. If you use them your application might break when PA
+ * is upgraded. Also, please note that these values are not useful
+ * on the client side anyway. */
+
+ PA_SOURCE_INIT = -2,
+ /**< Initialization state */
+
+ PA_SOURCE_UNLINKED = -3
+ /**< The state when the source is getting unregistered and removed from client access */
+/** \endcond */
+
+} pa_source_state_t;
+
+/** Returns non-zero if source is recording: running or idle. \since 0.9.15 */
+static inline int PA_SOURCE_IS_OPENED(pa_source_state_t x) {
+ return x == PA_SOURCE_RUNNING || x == PA_SOURCE_IDLE;
+}
+
+/** \cond fulldocs */
+#define PA_SOURCE_INVALID_STATE PA_SOURCE_INVALID_STATE
+#define PA_SOURCE_RUNNING PA_SOURCE_RUNNING
+#define PA_SOURCE_IDLE PA_SOURCE_IDLE
+#define PA_SOURCE_SUSPENDED PA_SOURCE_SUSPENDED
+#define PA_SOURCE_IS_OPENED PA_SOURCE_IS_OPENED
+/** \endcond */
+
/** A generic free() like callback prototype */
typedef void (*pa_free_cb_t)(void *p);