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a255c29344
[The original commit message didn't have any explanation why this change is made, so I'll add that information here myself. --Tanu Kaskinen] This change is from the developers of a Haskell binding[1]. According to them, this change isn't strictly necessary, but their code gets significantly cleaner if they can register an operation callback that is called when the operation is cancelled due to the context getting disconnected. [1] https://github.com/favonia/pulse
312 lines
10 KiB
C
312 lines
10 KiB
C
#ifndef foointernalhfoo
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#define foointernalhfoo
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <pulse/mainloop-api.h>
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#include <pulse/context.h>
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#include <pulse/stream.h>
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#include <pulse/operation.h>
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#include <pulse/subscribe.h>
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#include <pulse/ext-device-manager.h>
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#include <pulse/ext-device-restore.h>
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#include <pulse/ext-stream-restore.h>
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#include <pulsecore/socket-client.h>
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#include <pulsecore/pstream.h>
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#include <pulsecore/pdispatch.h>
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#include <pulsecore/llist.h>
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#include <pulsecore/native-common.h>
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#include <pulsecore/strlist.h>
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#include <pulsecore/mcalign.h>
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#include <pulsecore/memblockq.h>
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#include <pulsecore/hashmap.h>
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#include <pulsecore/refcnt.h>
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#include <pulsecore/time-smoother.h>
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#ifdef HAVE_DBUS
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#include <pulsecore/dbus-util.h>
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#endif
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#include "client-conf.h"
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#define DEFAULT_TIMEOUT (30)
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struct pa_context {
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PA_REFCNT_DECLARE;
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#ifdef HAVE_DBUS
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pa_dbus_wrap_connection *system_bus;
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pa_dbus_wrap_connection *session_bus;
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#endif
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pa_proplist *proplist;
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pa_mainloop_api* mainloop;
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pa_socket_client *client;
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pa_pstream *pstream;
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pa_pdispatch *pdispatch;
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pa_hashmap *record_streams, *playback_streams;
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PA_LLIST_HEAD(pa_stream, streams);
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PA_LLIST_HEAD(pa_operation, operations);
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uint32_t version;
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uint32_t ctag;
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uint32_t csyncid;
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int error;
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pa_context_state_t state;
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pa_context_notify_cb_t state_callback;
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void *state_userdata;
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pa_context_subscribe_cb_t subscribe_callback;
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void *subscribe_userdata;
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pa_context_event_cb_t event_callback;
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void *event_userdata;
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pa_mempool *mempool;
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pa_bool_t is_local:1;
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pa_bool_t do_shm:1;
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pa_bool_t server_specified:1;
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pa_bool_t no_fail:1;
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pa_bool_t do_autospawn:1;
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pa_bool_t use_rtclock:1;
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pa_bool_t filter_added:1;
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pa_spawn_api spawn_api;
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pa_strlist *server_list;
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char *server;
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pa_client_conf *conf;
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uint32_t client_index;
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/* Extension specific data */
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struct {
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pa_ext_device_manager_subscribe_cb_t callback;
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void *userdata;
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} ext_device_manager;
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struct {
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pa_ext_device_restore_subscribe_cb_t callback;
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void *userdata;
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} ext_device_restore;
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struct {
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pa_ext_stream_restore_subscribe_cb_t callback;
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void *userdata;
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} ext_stream_restore;
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};
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#define PA_MAX_WRITE_INDEX_CORRECTIONS 32
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typedef struct pa_index_correction {
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uint32_t tag;
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int64_t value;
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pa_bool_t valid:1;
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pa_bool_t absolute:1;
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pa_bool_t corrupt:1;
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} pa_index_correction;
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#define PA_MAX_FORMATS (PA_ENCODING_MAX)
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struct pa_stream {
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PA_REFCNT_DECLARE;
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PA_LLIST_FIELDS(pa_stream);
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pa_context *context;
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pa_mainloop_api *mainloop;
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uint32_t direct_on_input;
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pa_stream_direction_t direction;
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pa_stream_state_t state;
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pa_stream_flags_t flags;
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pa_sample_spec sample_spec;
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pa_channel_map channel_map;
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uint8_t n_formats;
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pa_format_info *req_formats[PA_MAX_FORMATS];
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pa_format_info *format;
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pa_proplist *proplist;
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pa_bool_t channel_valid:1;
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pa_bool_t suspended:1;
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pa_bool_t corked:1;
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pa_bool_t timing_info_valid:1;
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pa_bool_t auto_timing_update_requested:1;
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uint32_t channel;
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uint32_t syncid;
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uint32_t stream_index;
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int64_t requested_bytes;
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pa_buffer_attr buffer_attr;
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uint32_t device_index;
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char *device_name;
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/* playback */
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pa_memblock *write_memblock;
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void *write_data;
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int64_t latest_underrun_at_index;
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/* recording */
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pa_memchunk peek_memchunk;
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void *peek_data;
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pa_memblockq *record_memblockq;
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/* Store latest latency info */
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pa_timing_info timing_info;
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/* Use to make sure that time advances monotonically */
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pa_usec_t previous_time;
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/* time updates with tags older than these are invalid */
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uint32_t write_index_not_before;
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uint32_t read_index_not_before;
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/* Data about individual timing update corrections */
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pa_index_correction write_index_corrections[PA_MAX_WRITE_INDEX_CORRECTIONS];
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int current_write_index_correction;
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/* Latency interpolation stuff */
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pa_time_event *auto_timing_update_event;
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pa_usec_t auto_timing_interval_usec;
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pa_smoother *smoother;
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/* Callbacks */
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pa_stream_notify_cb_t state_callback;
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void *state_userdata;
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pa_stream_request_cb_t read_callback;
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void *read_userdata;
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pa_stream_request_cb_t write_callback;
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void *write_userdata;
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pa_stream_notify_cb_t overflow_callback;
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void *overflow_userdata;
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pa_stream_notify_cb_t underflow_callback;
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void *underflow_userdata;
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pa_stream_notify_cb_t latency_update_callback;
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void *latency_update_userdata;
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pa_stream_notify_cb_t moved_callback;
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void *moved_userdata;
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pa_stream_notify_cb_t suspended_callback;
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void *suspended_userdata;
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pa_stream_notify_cb_t started_callback;
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void *started_userdata;
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pa_stream_event_cb_t event_callback;
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void *event_userdata;
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pa_stream_notify_cb_t buffer_attr_callback;
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void *buffer_attr_userdata;
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};
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typedef void (*pa_operation_cb_t)(void);
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struct pa_operation {
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PA_REFCNT_DECLARE;
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pa_context *context;
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pa_stream *stream;
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PA_LLIST_FIELDS(pa_operation);
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pa_operation_state_t state;
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void *userdata;
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pa_operation_cb_t callback;
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void *state_userdata;
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pa_operation_notify_cb_t state_callback;
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void *private; /* some operations might need this */
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};
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void pa_command_request(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_stream_killed(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_subscribe_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_overflow_or_underflow(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_stream_suspended(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_stream_moved(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_stream_started(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_stream_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_client_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_command_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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pa_operation *pa_operation_new(pa_context *c, pa_stream *s, pa_operation_cb_t callback, void *userdata);
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void pa_operation_done(pa_operation *o);
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void pa_create_stream_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_stream_disconnect_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_context_simple_ack_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_stream_simple_ack_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
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void pa_context_fail(pa_context *c, int error);
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int pa_context_set_error(pa_context *c, int error);
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void pa_context_set_state(pa_context *c, pa_context_state_t st);
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int pa_context_handle_error(pa_context *c, uint32_t command, pa_tagstruct *t, pa_bool_t fail);
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pa_operation* pa_context_send_simple_command(pa_context *c, uint32_t command, void (*internal_callback)(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata), void (*cb)(void), void *userdata);
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void pa_stream_set_state(pa_stream *s, pa_stream_state_t st);
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pa_tagstruct *pa_tagstruct_command(pa_context *c, uint32_t command, uint32_t *tag);
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#define PA_CHECK_VALIDITY(context, expression, error) \
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do { \
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if (!(expression)) \
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return -pa_context_set_error((context), (error)); \
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} while(FALSE)
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#define PA_CHECK_VALIDITY_RETURN_ANY(context, expression, error, value) \
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do { \
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if (!(expression)) { \
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pa_context_set_error((context), (error)); \
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return value; \
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} \
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} while(FALSE)
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#define PA_CHECK_VALIDITY_RETURN_NULL(context, expression, error) \
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PA_CHECK_VALIDITY_RETURN_ANY(context, expression, error, NULL)
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#define PA_FAIL(context, error) \
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do { \
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return -pa_context_set_error((context), (error)); \
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} while(FALSE)
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#define PA_FAIL_RETURN_ANY(context, error, value) \
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do { \
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pa_context_set_error((context), (error)); \
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return value; \
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} while(FALSE)
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#define PA_FAIL_RETURN_NULL(context, error) \
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PA_FAIL_RETURN_ANY(context, error, NULL)
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void pa_ext_device_manager_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
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void pa_ext_device_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
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void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
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void pa_format_info_free2(pa_format_info *f, void *userdata);
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pa_bool_t pa_mainloop_is_our_api(pa_mainloop_api*m);
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#endif
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