From f44ba092651aa75055e109e04b4164ea92ae7fdc Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 19 Jun 2006 21:53:48 +0000 Subject: big s/polyp/pulse/g git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/pulsecore/pdispatch.c | 318 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 318 insertions(+) create mode 100644 src/pulsecore/pdispatch.c (limited to 'src/pulsecore/pdispatch.c') diff --git a/src/pulsecore/pdispatch.c b/src/pulsecore/pdispatch.c new file mode 100644 index 00000000..5b76b432 --- /dev/null +++ b/src/pulsecore/pdispatch.c @@ -0,0 +1,318 @@ +/* $Id$ */ + +/*** + This file is part of PulseAudio. + + 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, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include +#include +#include + +#include +#include + +#include +#include +#include +#include + +#include "pdispatch.h" + +/*#define DEBUG_OPCODES */ + +#ifdef DEBUG_OPCODES + +static const char *command_names[PA_COMMAND_MAX] = { + [PA_COMMAND_ERROR] = "ERROR", + [PA_COMMAND_TIMEOUT] = "TIMEOUT", + [PA_COMMAND_REPLY] = "REPLY", + [PA_COMMAND_CREATE_PLAYBACK_STREAM] = "CREATE_PLAYBACK_STREAM", + [PA_COMMAND_DELETE_PLAYBACK_STREAM] = "DELETE_PLAYBACK_STREAM", + [PA_COMMAND_CREATE_RECORD_STREAM] = "CREATE_RECORD_STREAM", + [PA_COMMAND_DELETE_RECORD_STREAM] = "DELETE_RECORD_STREAM", + [PA_COMMAND_AUTH] = "AUTH", + [PA_COMMAND_REQUEST] = "REQUEST", + [PA_COMMAND_EXIT] = "EXIT", + [PA_COMMAND_SET_CLIENT_NAME] = "SET_CLIENT_NAME", + [PA_COMMAND_LOOKUP_SINK] = "LOOKUP_SINK", + [PA_COMMAND_LOOKUP_SOURCE] = "LOOKUP_SOURCE", + [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = "DRAIN_PLAYBACK_STREAM", + [PA_COMMAND_PLAYBACK_STREAM_KILLED] = "PLAYBACK_STREAM_KILLED", + [PA_COMMAND_RECORD_STREAM_KILLED] = "RECORD_STREAM_KILLED", + [PA_COMMAND_STAT] = "STAT", + [PA_COMMAND_GET_PLAYBACK_LATENCY] = "PLAYBACK_LATENCY", + [PA_COMMAND_CREATE_UPLOAD_STREAM] = "CREATE_UPLOAD_STREAM", + [PA_COMMAND_DELETE_UPLOAD_STREAM] = "DELETE_UPLOAD_STREAM", + [PA_COMMAND_FINISH_UPLOAD_STREAM] = "FINISH_UPLOAD_STREAM", + [PA_COMMAND_PLAY_SAMPLE] = "PLAY_SAMPLE", + [PA_COMMAND_REMOVE_SAMPLE] = "REMOVE_SAMPLE", + [PA_COMMAND_GET_SERVER_INFO] = "GET_SERVER_INFO", + [PA_COMMAND_GET_SINK_INFO] = "GET_SINK_INFO", + [PA_COMMAND_GET_SINK_INFO_LIST] = "GET_SINK_INFO_LIST", + [PA_COMMAND_GET_SOURCE_INFO] = "GET_SOURCE_INFO", + [PA_COMMAND_GET_SOURCE_INFO_LIST] = "GET_SOURCE_INFO_LIST", + [PA_COMMAND_GET_MODULE_INFO] = "GET_MODULE_INFO", + [PA_COMMAND_GET_MODULE_INFO_LIST] = "GET_MODULE_INFO_LIST", + [PA_COMMAND_GET_CLIENT_INFO] = "GET_CLIENT_INFO", + [PA_COMMAND_GET_CLIENT_INFO_LIST] = "GET_CLIENT_INFO_LIST", + [PA_COMMAND_GET_SAMPLE_INFO] = "GET_SAMPLE_INFO", + [PA_COMMAND_GET_SAMPLE_INFO_LIST] = "GET_SAMPLE_INFO_LIST", + [PA_COMMAND_GET_SINK_INPUT_INFO] = "GET_SINK_INPUT_INFO", + [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = "GET_SINK_INPUT_INFO_LIST", + [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = "GET_SOURCE_OUTPUT_INFO", + [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = "GET_SOURCE_OUTPUT_INFO_LIST", + [PA_COMMAND_SUBSCRIBE] = "SUBSCRIBE", + [PA_COMMAND_SUBSCRIBE_EVENT] = "SUBSCRIBE_EVENT", + [PA_COMMAND_SET_SINK_VOLUME] = "SET_SINK_VOLUME", + [PA_COMMAND_SET_SINK_INPUT_VOLUME] = "SET_SINK_INPUT_VOLUME", + [PA_COMMAND_SET_SOURCE_VOLUME] = "SET_SOURCE_VOLME", + [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = "TRIGGER_PLAYBACK_STREAM", + [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = "FLUSH_PLAYBACK_STREAM", + [PA_COMMAND_CORK_PLAYBACK_STREAM] = "CORK_PLAYBACK_STREAM", + [PA_COMMAND_GET_AUTOLOAD_INFO] = "GET_AUTOLOAD_INFO", + [PA_COMMAND_GET_AUTOLOAD_INFO_LIST] = "GET_AUTOLOAD_INFO_LIST", +}; + +#endif + +struct reply_info { + pa_pdispatch *pdispatch; + PA_LLIST_FIELDS(struct reply_info); + pa_pdispatch_cb_t callback; + void *userdata; + pa_free_cb_t free_cb; + uint32_t tag; + pa_time_event *time_event; +}; + +struct pa_pdispatch { + int ref; + pa_mainloop_api *mainloop; + const pa_pdispatch_cb_t *callback_table; + unsigned n_commands; + PA_LLIST_HEAD(struct reply_info, replies); + pa_pdispatch_drain_callback drain_callback; + void *drain_userdata; + const void *creds; +}; + +static void reply_info_free(struct reply_info *r) { + assert(r && r->pdispatch && r->pdispatch->mainloop); + + if (r->time_event) + r->pdispatch->mainloop->time_free(r->time_event); + + PA_LLIST_REMOVE(struct reply_info, r->pdispatch->replies, r); + + pa_xfree(r); +} + +pa_pdispatch* pa_pdispatch_new(pa_mainloop_api *mainloop, const pa_pdispatch_cb_t*table, unsigned entries) { + pa_pdispatch *pd; + assert(mainloop); + + assert((entries && table) || (!entries && !table)); + + pd = pa_xmalloc(sizeof(pa_pdispatch)); + pd->ref = 1; + pd->mainloop = mainloop; + pd->callback_table = table; + pd->n_commands = entries; + PA_LLIST_HEAD_INIT(pa_reply_info, pd->replies); + pd->drain_callback = NULL; + pd->drain_userdata = NULL; + pd->creds = NULL; + + return pd; +} + +static void pdispatch_free(pa_pdispatch *pd) { + assert(pd); + + while (pd->replies) { + if (pd->replies->free_cb) + pd->replies->free_cb(pd->replies->userdata); + + reply_info_free(pd->replies); + } + + pa_xfree(pd); +} + +static void run_action(pa_pdispatch *pd, struct reply_info *r, uint32_t command, pa_tagstruct *ts) { + pa_pdispatch_cb_t callback; + void *userdata; + uint32_t tag; + assert(r); + + pa_pdispatch_ref(pd); + + callback = r->callback; + userdata = r->userdata; + tag = r->tag; + + reply_info_free(r); + + callback(pd, command, tag, ts, userdata); + + if (pd->drain_callback && !pa_pdispatch_is_pending(pd)) + pd->drain_callback(pd, pd->drain_userdata); + + pa_pdispatch_unref(pd); +} + +int pa_pdispatch_run(pa_pdispatch *pd, pa_packet*packet, const void *creds, void *userdata) { + uint32_t tag, command; + pa_tagstruct *ts = NULL; + int ret = -1; + assert(pd && packet && packet->data); + + pa_pdispatch_ref(pd); + + if (packet->length <= 8) + goto finish; + + ts = pa_tagstruct_new(packet->data, packet->length); + assert(ts); + + if (pa_tagstruct_getu32(ts, &command) < 0 || + pa_tagstruct_getu32(ts, &tag) < 0) + goto finish; + +#ifdef DEBUG_OPCODES +{ + char t[256]; + char const *p; + if (!(p = command_names[command])) + snprintf((char*) (p = t), sizeof(t), "%u", command); + + pa_log(__FILE__": Recieved opcode <%s>", p); +} +#endif + + pd->creds = creds; + + if (command == PA_COMMAND_ERROR || command == PA_COMMAND_REPLY) { + struct reply_info *r; + + for (r = pd->replies; r; r = r->next) + if (r->tag == tag) + break; + + if (r) + run_action(pd, r, command, ts); + + } else if (pd->callback_table && (command < pd->n_commands) && pd->callback_table[command]) { + const pa_pdispatch_cb_t *c = pd->callback_table+command; + + (*c)(pd, command, tag, ts, userdata); + } else { + pa_log(__FILE__": Recieved unsupported command %u", command); + goto finish; + } + + ret = 0; + +finish: + pd->creds = NULL; + + if (ts) + pa_tagstruct_free(ts); + + pa_pdispatch_unref(pd); + + return ret; +} + +static void timeout_callback(pa_mainloop_api*m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) { + struct reply_info*r = userdata; + assert(r && r->time_event == e && r->pdispatch && r->pdispatch->mainloop == m && r->callback); + + run_action(r->pdispatch, r, PA_COMMAND_TIMEOUT, NULL); +} + +void pa_pdispatch_register_reply(pa_pdispatch *pd, uint32_t tag, int timeout, pa_pdispatch_cb_t cb, void *userdata, pa_free_cb_t free_cb) { + struct reply_info *r; + struct timeval tv; + assert(pd && pd->ref >= 1 && cb); + + r = pa_xmalloc(sizeof(struct reply_info)); + r->pdispatch = pd; + r->callback = cb; + r->userdata = userdata; + r->free_cb = free_cb; + r->tag = tag; + + pa_gettimeofday(&tv); + tv.tv_sec += timeout; + + r->time_event = pd->mainloop->time_new(pd->mainloop, &tv, timeout_callback, r); + assert(r->time_event); + + PA_LLIST_PREPEND(struct reply_info, pd->replies, r); +} + +int pa_pdispatch_is_pending(pa_pdispatch *pd) { + assert(pd); + + return !!pd->replies; +} + +void pa_pdispatch_set_drain_callback(pa_pdispatch *pd, void (*cb)(pa_pdispatch *pd, void *userdata), void *userdata) { + assert(pd); + assert(!cb || pa_pdispatch_is_pending(pd)); + + pd->drain_callback = cb; + pd->drain_userdata = userdata; +} + +void pa_pdispatch_unregister_reply(pa_pdispatch *pd, void *userdata) { + struct reply_info *r, *n; + assert(pd); + + for (r = pd->replies; r; r = n) { + n = r->next; + + if (r->userdata == userdata) + reply_info_free(r); + } +} + +void pa_pdispatch_unref(pa_pdispatch *pd) { + assert(pd && pd->ref >= 1); + + if (!(--(pd->ref))) + pdispatch_free(pd); +} + +pa_pdispatch* pa_pdispatch_ref(pa_pdispatch *pd) { + assert(pd && pd->ref >= 1); + pd->ref++; + return pd; +} + +const void * pa_pdispatch_creds(pa_pdispatch *pd) { + assert(pd); + assert(pd->ref >= 1); + + return pd->creds; +} -- cgit