blob: e9fec55d9d056d1a303945544bb7e42e7bf304b0 [file] [log] [blame]
#ifndef foopulseaudiohfoo
#define foopulseaudiohfoo
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <> for Cendio AB
PulseAudio 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.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, see <>.
#include <pulse/direction.h>
#include <pulse/mainloop-api.h>
#include <pulse/sample.h>
#include <pulse/format.h>
#include <pulse/def.h>
#include <pulse/context.h>
#include <pulse/stream.h>
#include <pulse/introspect.h>
#include <pulse/subscribe.h>
#include <pulse/scache.h>
#include <pulse/version.h>
#include <pulse/error.h>
#include <pulse/operation.h>
#include <pulse/channelmap.h>
#include <pulse/volume.h>
#include <pulse/xmalloc.h>
#include <pulse/utf8.h>
#include <pulse/thread-mainloop.h>
#include <pulse/mainloop.h>
#include <pulse/mainloop-signal.h>
#include <pulse/util.h>
#include <pulse/timeval.h>
#include <pulse/proplist.h>
#include <pulse/rtclock.h>
/** \file
* Include all libpulse header files at once. The following files are
* included: \ref direction.h, \ref mainloop-api.h, \ref sample.h, \ref def.h,
* \ref context.h, \ref stream.h, \ref introspect.h, \ref subscribe.h, \ref
* scache.h, \ref version.h, \ref error.h, \ref channelmap.h, \ref
* operation.h,\ref volume.h, \ref xmalloc.h, \ref utf8.h, \ref
* thread-mainloop.h, \ref mainloop.h, \ref util.h, \ref proplist.h,
* \ref timeval.h, \ref rtclock.h and \ref mainloop-signal.h at
* once */
/** \mainpage
* \section intro_sec Introduction
* This document describes the client API for the PulseAudio sound
* server. The API comes in two flavours to accommodate different styles
* of applications and different needs in complexity:
* \li The complete but somewhat complicated to use asynchronous API
* \li The simplified, easy to use, but limited synchronous API
* All strings in PulseAudio are in the UTF-8 encoding, regardless of current
* locale. Some functions will filter invalid sequences from the string, some
* will simply fail. To ensure reliable behaviour, make sure everything you
* pass to the API is already in UTF-8.
* \section simple_sec Simple API
* Use this if you develop your program in synchronous style and just
* need a way to play or record data on the sound server. See
* \subpage simple for more details.
* \section async_sec Asynchronous API
* Use this if you develop your programs in asynchronous, event loop
* based style or if you want to use the advanced features of the
* PulseAudio API. A guide can be found in \subpage async.
* By using the built-in threaded main loop, it is possible to achieve a
* pseudo-synchronous API, which can be useful in synchronous applications
* where the simple API is insufficient. See the \ref async page for
* details.
* \section thread_sec Threads
* The PulseAudio client libraries are not designed to be directly
* thread-safe. They are however designed to be reentrant and
* threads-aware.
* To use the libraries in a threaded environment, you must assure that
* all objects are only used in one thread at a time. Normally, this means
* that all objects belonging to a single context must be accessed from the
* same thread.
* The included main loop implementation is also not thread safe. Take care
* to make sure event objects are not manipulated when any other code is
* using the main loop.
* \section error_sec Error Handling
* Every function should explicitly document how errors are reported to
* the caller. Unfortunately, currently a lot of that documentation is
* missing. Here is an overview of the general conventions used.
* The PulseAudio API indicates error conditions by returning a negative
* integer value or a NULL pointer. On success, zero or a positive integer
* value or a valid pointer is returned.
* Functions of the \ref simple API generally return -1 or NULL on failure and
* can optionally store an error code (see ::pa_error_code) using a pointer
* argument.
* Functions of the \ref async API return an negative error code or NULL on
* failure (see ::pa_error_code). In the later case, pa_context_errno()
* can be used to obtain the error code of the last failed operation.
* An error code can be turned into a human readable message using
* pa_strerror().
* \section logging_sec Logging
* You can configure different logging parameters for the PulseAudio client
* libraries. The following environment variables are recognized:
* - `PULSE_LOG`: Maximum log level required. Bigger values result in a
* more verbose logging output. The following values are recognized:
* + `0`: Error messages
* + `1`: Warning messages
* + `2`: Notice messages
* + `3`: Info messages
* + `4`: Debug messages
* - `PULSE_LOG_SYSLOG`: If defined, force all client libraries to log
* their output using the syslog(3) mechanism. Default behavior is to
* log all output to stderr.
* - `PULSE_LOG_JOURNAL`: If defined, force all client libraries to log
* their output using the systemd journal. If both `PULSE_LOG_JOURNAL`
* and `PULSE_LOG_SYSLOG` are defined, logging to the systemd journal
* takes a higher precedence. Each message originating library file name
* and function are included by default through the journal fields
* `CODE_FILE`, `CODE_FUNC`, and `CODE_LINE`. Any backtrace attached to
* the logging message is sent through the PulseAudio-specific journal
* field `PULSE_BACKTRACE`. This environment variable has no effect if
* PulseAudio was compiled without systemd journal support.
* - `PULSE_LOG_COLORS`: If defined, enables colored logging output.
* - `PULSE_LOG_TIME`: If defined, include timestamps with each message.
* - `PULSE_LOG_FILE`: If defined, include each message originating file
* name.
* - `PULSE_LOG_META`: If defined, include each message originating file
* name and path relative to the PulseAudio source tree root.
* - `PULSE_LOG_LEVEL`: If defined, include a log level prefix with each
* message. Respectively, the prefixes "E", "W", "N", "I", "D" stands
* for Error, Warning, Notice, Info, and Debugging.
* - `PULSE_LOG_BACKTRACE`: Number of functions to display in the backtrace.
* If this variable is not defined, or has a value of zero, no backtrace
* is shown.
* - `PULSE_LOG_BACKTRACE_SKIP`: Number of backtrace levels to skip, from
* the function printing the log message downwards.
* - `PULSE_LOG_NO_RATE_LIMIT`: If defined, do not rate limit the logging
* output. Rate limiting skips certain log messages when their frequency
* is considered too high.
* \section pkgconfig pkg-config
* The PulseAudio libraries provide pkg-config snippets for the different
* modules:
* \li libpulse - The asynchronous API and the internal main loop implementation.
* \li libpulse-mainloop-glib - GLIB 2.x main loop bindings.
* \li libpulse-simple - The simple PulseAudio API.