|  | #ifndef foopulseaudiohfoo | 
|  | #define foopulseaudiohfoo | 
|  |  | 
|  | /*** | 
|  | This file is part of PulseAudio. | 
|  |  | 
|  | Copyright 2004-2006 Lennart Poettering | 
|  | Copyright 2006 Pierre Ossman <ossman@cendio.se> 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 | 
|  | 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 PulseAudio; if not, see <http://www.gnu.org/licenses/>. | 
|  | ***/ | 
|  |  | 
|  | #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. | 
|  | */ | 
|  |  | 
|  | #endif |