From e205b25d65ccb380fa158711e24d55b6de5d9bc1 Mon Sep 17 00:00:00 2001 From: Pierre Ossman Date: Thu, 16 Feb 2006 19:19:58 +0000 Subject: Reorganised the source tree. We now have src/ with a couple of subdirs: * daemon/ - Contains the files specific to the polypaudio daemon. * modules/ - All loadable modules. * polyp/ - Files that are part of the public, application interface or are only used in libpolyp. * polypcore/ - All other shared files. * tests/ - Test programs. * utils/ - Utility programs. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/polyp/polyplib-def.h | 213 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 src/polyp/polyplib-def.h (limited to 'src/polyp/polyplib-def.h') diff --git a/src/polyp/polyplib-def.h b/src/polyp/polyplib-def.h new file mode 100644 index 00000000..0591ce6c --- /dev/null +++ b/src/polyp/polyplib-def.h @@ -0,0 +1,213 @@ +#ifndef foopolyplibdefhfoo +#define foopolyplibdefhfoo + +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + polypaudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with polypaudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#include +#include +#include + +#include +#include + +/** \file + * Global definitions */ + +PA_C_DECL_BEGIN + +/** The state of a connection context */ +typedef enum pa_context_state { + PA_CONTEXT_UNCONNECTED, /**< The context hasn't been connected yet */ + PA_CONTEXT_CONNECTING, /**< A connection is being established */ + PA_CONTEXT_AUTHORIZING, /**< The client is authorizing itself to the daemon */ + PA_CONTEXT_SETTING_NAME, /**< The client is passing its application name to the daemon */ + PA_CONTEXT_READY, /**< The connection is established, the context is ready to execute operations */ + PA_CONTEXT_FAILED, /**< The connection failed or was disconnected */ + PA_CONTEXT_TERMINATED /**< The connection was terminated cleanly */ +} pa_context_state_t; + +/** The state of a stream */ +typedef enum pa_stream_state { + PA_STREAM_DISCONNECTED, /**< 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; + +/** The state of an operation */ +typedef enum pa_operation_state { + PA_OPERATION_RUNNING, /**< The operation is still running */ + PA_OPERATION_DONE, /**< The operation has been completed */ + PA_OPERATION_CANCELED /**< The operation has been canceled */ +} pa_operation_state_t; + +/** An invalid index */ +#define PA_INVALID_INDEX ((uint32_t) -1) + +/** The direction of a pa_stream object */ +typedef enum pa_stream_direction { + PA_STREAM_NODIRECTION, /**< Invalid direction */ + PA_STREAM_PLAYBACK, /**< Playback stream */ + PA_STREAM_RECORD, /**< Record stream */ + PA_STREAM_UPLOAD /**< Sample upload stream */ +} pa_stream_direction_t; + +/** Some special flags for stream connections. \since 0.6 */ +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_LATENCY = 2 /**< Interpolate the latency for + * this stream. When enabled, + * you can use + * pa_stream_interpolated_xxx() + * for synchronization. Using + * these functions instead of + * pa_stream_get_latency() has + * the advantage of not + * requiring a whole roundtrip + * for responses. Consider using + * this option when frequently + * requesting latency + * information. This is + * especially useful on long latency + * network connections. */ +} pa_stream_flags_t; + +/** 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. */ +} pa_buffer_attr; + +/** Error values as used by pa_context_errno(). Use pa_strerror() to convert these values to human readable strings */ +enum { + PA_ERROR_OK, /**< No error */ + PA_ERROR_ACCESS, /**< Access failure */ + PA_ERROR_COMMAND, /**< Unknown command */ + PA_ERROR_INVALID, /**< Invalid argument */ + PA_ERROR_EXIST, /**< Entity exists */ + PA_ERROR_NOENTITY, /**< No such entity */ + PA_ERROR_CONNECTIONREFUSED, /**< Connection refused */ + PA_ERROR_PROTOCOL, /**< Protocol error */ + PA_ERROR_TIMEOUT, /**< Timeout */ + PA_ERROR_AUTHKEY, /**< No authorization key */ + PA_ERROR_INTERNAL, /**< Internal error */ + PA_ERROR_CONNECTIONTERMINATED, /**< Connection terminated */ + PA_ERROR_KILLED, /**< Entity killed */ + PA_ERROR_INVALIDSERVER, /**< Invalid server */ + PA_ERROR_INITFAILED, /**< Module initialization failed */ + PA_ERROR_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_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_type_t; + +/** Return one if an event type t matches an event mask bitfield */ +#define pa_subscription_match_flags(m, t) (!!((m) & (1 << ((t) & PA_SUBSCRIPTION_EVENT_FACILITY_MASK)))) + +/** A structure for latency info. See pa_stream_get_latency(). The + * total output latency a sample that is written with + * pa_stream_write() takes to be played may be estimated by + * sink_usec+buffer_usec+transport_usec. The output buffer to which + * buffer_usec relates may be manipulated freely (with + * pa_stream_write()'s delta argument, pa_stream_flush() and friends), + * the buffers sink_usec/source_usec relates to is a first-in + * first-out buffer which cannot be flushed or manipulated in any + * way. The total input latency a sample that is recorded takes to be + * delivered to the application is: + * 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.*/ +typedef struct pa_latency_info { + pa_usec_t buffer_usec; /**< Time in usecs the current buffer takes to play. For both playback and record streams. */ + 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. */ + uint32_t queue_length; /**< Queue size in bytes. For both playback and record streams. */ + 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 */ + struct timeval timestamp; /**< The time when this latency info was current */ + uint64_t counter; /**< The byte counter current when the latency info was requested. \since 0.6 */ +} pa_latency_info; + +/** A structure for the spawn api. This may be used to integrate auto + * spawned daemons into your application. For more information see + * pa_context_connect(). When spawning a new child process the + * 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 */ +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. */ +} pa_spawn_api; + +PA_C_DECL_END + +#endif -- cgit