summaryrefslogtreecommitdiffstats
path: root/polyp/protocol-native.c
diff options
context:
space:
mode:
authorLennart Poettering <lennart@poettering.net>2004-07-17 14:12:30 +0000
committerLennart Poettering <lennart@poettering.net>2004-07-17 14:12:30 +0000
commit41f6aea8fdbc744c13bc461056a2d694a5c4d06f (patch)
tree1e23911c1f61c66df3fba272af53475508a7a7ce /polyp/protocol-native.c
parent563201e128d600ec1ae4a33ca81d03b776501f82 (diff)
rename src to polyp
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'polyp/protocol-native.c')
-rw-r--r--polyp/protocol-native.c863
1 files changed, 863 insertions, 0 deletions
diff --git a/polyp/protocol-native.c b/polyp/protocol-native.c
new file mode 100644
index 00000000..83c910d1
--- /dev/null
+++ b/polyp/protocol-native.c
@@ -0,0 +1,863 @@
+/* $Id$ */
+
+/***
+ This file is part of polypaudio.
+
+ polypaudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 2 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU 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.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include "protocol-native.h"
+#include "native-common.h"
+#include "packet.h"
+#include "client.h"
+#include "source-output.h"
+#include "sink-input.h"
+#include "pstream.h"
+#include "tagstruct.h"
+#include "pdispatch.h"
+#include "pstream-util.h"
+#include "authkey.h"
+#include "namereg.h"
+
+struct connection;
+struct pa_protocol_native;
+
+struct record_stream {
+ struct connection *connection;
+ uint32_t index;
+ struct pa_source_output *source_output;
+ struct pa_memblockq *memblockq;
+ size_t fragment_size;
+};
+
+struct playback_stream {
+ struct connection *connection;
+ uint32_t index;
+ struct pa_sink_input *sink_input;
+ struct pa_memblockq *memblockq;
+ size_t requested_bytes;
+ int drain_request;
+ uint32_t drain_tag;
+};
+
+struct connection {
+ int authorized;
+ struct pa_protocol_native *protocol;
+ struct pa_client *client;
+ struct pa_pstream *pstream;
+ struct pa_pdispatch *pdispatch;
+ struct pa_idxset *record_streams, *playback_streams;
+ uint32_t rrobin_index;
+};
+
+struct pa_protocol_native {
+ struct pa_module *module;
+ int public;
+ struct pa_core *core;
+ struct pa_socket_server *server;
+ struct pa_idxset *connections;
+ uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
+};
+
+static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
+static void sink_input_drop_cb(struct pa_sink_input *i, size_t length);
+static void sink_input_kill_cb(struct pa_sink_input *i);
+static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i);
+
+static void request_bytes(struct playback_stream*s);
+
+static void source_output_kill_cb(struct pa_source_output *o);
+static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
+
+static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_delete_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_delete_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
+
+static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
+ [PA_COMMAND_ERROR] = { NULL },
+ [PA_COMMAND_TIMEOUT] = { NULL },
+ [PA_COMMAND_REPLY] = { NULL },
+ [PA_COMMAND_CREATE_PLAYBACK_STREAM] = { command_create_playback_stream },
+ [PA_COMMAND_DELETE_PLAYBACK_STREAM] = { command_delete_playback_stream },
+ [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = { command_drain_playback_stream },
+ [PA_COMMAND_CREATE_RECORD_STREAM] = { command_create_record_stream },
+ [PA_COMMAND_DELETE_RECORD_STREAM] = { command_delete_record_stream },
+ [PA_COMMAND_AUTH] = { command_auth },
+ [PA_COMMAND_REQUEST] = { NULL },
+ [PA_COMMAND_EXIT] = { command_exit },
+ [PA_COMMAND_SET_NAME] = { command_set_name },
+ [PA_COMMAND_LOOKUP_SINK] = { command_lookup },
+ [PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
+ [PA_COMMAND_STAT] = { command_stat },
+ [PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
+};
+
+/* structure management */
+
+static struct record_stream* record_stream_new(struct connection *c, struct pa_source *source, struct pa_sample_spec *ss, const char *name, size_t maxlength, size_t fragment_size) {
+ struct record_stream *s;
+ struct pa_source_output *source_output;
+ size_t base;
+ assert(c && source && ss && name && maxlength);
+
+ if (!(source_output = pa_source_output_new(source, name, ss)))
+ return NULL;
+
+ s = malloc(sizeof(struct record_stream));
+ assert(s);
+ s->connection = c;
+ s->source_output = source_output;
+ s->source_output->push = source_output_push_cb;
+ s->source_output->kill = source_output_kill_cb;
+ s->source_output->userdata = s;
+ s->source_output->owner = c->protocol->module;
+ s->source_output->client = c->client;
+
+ s->memblockq = pa_memblockq_new(maxlength, 0, base = pa_sample_size(ss), 0, 0);
+ assert(s->memblockq);
+
+ s->fragment_size = (fragment_size/base)*base;
+ if (!s->fragment_size)
+ s->fragment_size = base;
+
+ pa_idxset_put(c->record_streams, s, &s->index);
+ return s;
+}
+
+static void record_stream_free(struct record_stream* r) {
+ assert(r && r->connection);
+
+ pa_idxset_remove_by_data(r->connection->record_streams, r, NULL);
+ pa_source_output_free(r->source_output);
+ pa_memblockq_free(r->memblockq);
+ free(r);
+}
+
+static struct playback_stream* playback_stream_new(struct connection *c, struct pa_sink *sink, struct pa_sample_spec *ss, const char *name,
+ size_t maxlength,
+ size_t tlength,
+ size_t prebuf,
+ size_t minreq) {
+ struct playback_stream *s;
+ struct pa_sink_input *sink_input;
+ assert(c && sink && ss && name && maxlength);
+
+ if (!(sink_input = pa_sink_input_new(sink, name, ss)))
+ return NULL;
+
+ s = malloc(sizeof(struct playback_stream));
+ assert (s);
+ s->connection = c;
+ s->sink_input = sink_input;
+
+ s->sink_input->peek = sink_input_peek_cb;
+ s->sink_input->drop = sink_input_drop_cb;
+ s->sink_input->kill = sink_input_kill_cb;
+ s->sink_input->get_latency = sink_input_get_latency_cb;
+ s->sink_input->userdata = s;
+ s->sink_input->owner = c->protocol->module;
+ s->sink_input->client = c->client;
+
+ s->memblockq = pa_memblockq_new(maxlength, tlength, pa_sample_size(ss), prebuf, minreq);
+ assert(s->memblockq);
+
+ s->requested_bytes = 0;
+ s->drain_request = 0;
+
+ pa_idxset_put(c->playback_streams, s, &s->index);
+ return s;
+}
+
+static void playback_stream_free(struct playback_stream* p) {
+ assert(p && p->connection);
+
+ if (p->drain_request)
+ pa_pstream_send_error(p->connection->pstream, p->drain_tag, PA_ERROR_NOENTITY);
+
+ pa_idxset_remove_by_data(p->connection->playback_streams, p, NULL);
+ pa_sink_input_free(p->sink_input);
+ pa_memblockq_free(p->memblockq);
+ free(p);
+}
+
+static void connection_free(struct connection *c) {
+ struct record_stream *r;
+ struct playback_stream *p;
+ assert(c && c->protocol);
+
+ pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
+ while ((r = pa_idxset_first(c->record_streams, NULL)))
+ record_stream_free(r);
+ pa_idxset_free(c->record_streams, NULL, NULL);
+
+ while ((p = pa_idxset_first(c->playback_streams, NULL)))
+ playback_stream_free(p);
+ pa_idxset_free(c->playback_streams, NULL, NULL);
+
+ pa_pdispatch_free(c->pdispatch);
+ pa_pstream_free(c->pstream);
+ pa_client_free(c->client);
+ free(c);
+}
+
+static void request_bytes(struct playback_stream *s) {
+ struct pa_tagstruct *t;
+ size_t l;
+ assert(s);
+
+ if (!(l = pa_memblockq_missing(s->memblockq)))
+ return;
+
+ if (l <= s->requested_bytes)
+ return;
+
+ l -= s->requested_bytes;
+
+ if (l < pa_memblockq_get_minreq(s->memblockq))
+ return;
+
+ s->requested_bytes += l;
+
+ t = pa_tagstruct_new(NULL, 0);
+ assert(t);
+ pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
+ pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
+ pa_tagstruct_putu32(t, s->index);
+ pa_tagstruct_putu32(t, l);
+ pa_pstream_send_tagstruct(s->connection->pstream, t);
+
+ /*fprintf(stderr, "Requesting %u bytes\n", l);*/
+}
+
+static void send_memblock(struct connection *c) {
+ uint32_t start;
+ struct record_stream *r;
+
+ start = PA_IDXSET_INVALID;
+ for (;;) {
+ struct pa_memchunk chunk;
+
+ if (!(r = pa_idxset_rrobin(c->record_streams, &c->rrobin_index)))
+ return;
+
+ if (start == PA_IDXSET_INVALID)
+ start = c->rrobin_index;
+ else if (start == c->rrobin_index)
+ return;
+
+ if (pa_memblockq_peek(r->memblockq, &chunk) >= 0) {
+ if (chunk.length > r->fragment_size)
+ chunk.length = r->fragment_size;
+
+ pa_pstream_send_memblock(c->pstream, r->index, 0, &chunk);
+ pa_memblockq_drop(r->memblockq, chunk.length);
+ pa_memblock_unref(chunk.memblock);
+
+ return;
+ }
+ }
+}
+
+static void send_playback_stream_killed(struct playback_stream *p) {
+ struct pa_tagstruct *t;
+ assert(p);
+
+ t = pa_tagstruct_new(NULL, 0);
+ assert(t);
+ pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
+ pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
+ pa_tagstruct_putu32(t, p->index);
+ pa_pstream_send_tagstruct(p->connection->pstream, t);
+}
+
+static void send_record_stream_killed(struct record_stream *r) {
+ struct pa_tagstruct *t;
+ assert(r);
+
+ t = pa_tagstruct_new(NULL, 0);
+ assert(t);
+ pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
+ pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
+ pa_tagstruct_putu32(t, r->index);
+ pa_pstream_send_tagstruct(r->connection->pstream, t);
+}
+
+
+/*** sinkinput callbacks ***/
+
+static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
+ struct playback_stream *s;
+ assert(i && i->userdata && chunk);
+ s = i->userdata;
+
+ if (pa_memblockq_peek(s->memblockq, chunk) < 0)
+ return -1;
+
+ return 0;
+}
+
+static void sink_input_drop_cb(struct pa_sink_input *i, size_t length) {
+ struct playback_stream *s;
+ assert(i && i->userdata && length);
+ s = i->userdata;
+
+ pa_memblockq_drop(s->memblockq, length);
+ request_bytes(s);
+
+ if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
+ pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
+ s->drain_request = 0;
+ }
+}
+
+static void sink_input_kill_cb(struct pa_sink_input *i) {
+ assert(i && i->userdata);
+ send_playback_stream_killed((struct playback_stream *) i->userdata);
+ playback_stream_free((struct playback_stream *) i->userdata);
+}
+
+static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i) {
+ struct playback_stream *s;
+ assert(i && i->userdata);
+ s = i->userdata;
+
+ return pa_samples_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
+}
+
+/*** source_output callbacks ***/
+
+static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
+ struct record_stream *s;
+ assert(o && o->userdata && chunk);
+ s = o->userdata;
+
+ pa_memblockq_push(s->memblockq, chunk, 0);
+ if (!pa_pstream_is_pending(s->connection->pstream))
+ send_memblock(s->connection);
+}
+
+static void source_output_kill_cb(struct pa_source_output *o) {
+ assert(o && o->userdata);
+ send_record_stream_killed((struct record_stream *) o->userdata);
+ record_stream_free((struct record_stream *) o->userdata);
+}
+
+/*** pdispatch callbacks ***/
+
+static void protocol_error(struct connection *c) {
+ fprintf(stderr, __FILE__": protocol error, kicking client\n");
+ connection_free(c);
+}
+
+static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ struct playback_stream *s;
+ size_t maxlength, tlength, prebuf, minreq;
+ uint32_t sink_index;
+ const char *name;
+ struct pa_sample_spec ss;
+ struct pa_tagstruct *reply;
+ struct pa_sink *sink;
+ assert(c && t && c->protocol && c->protocol->core);
+
+ if (pa_tagstruct_gets(t, &name) < 0 ||
+ pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
+ pa_tagstruct_getu32(t, &sink_index) < 0 ||
+ pa_tagstruct_getu32(t, &maxlength) < 0 ||
+ pa_tagstruct_getu32(t, &tlength) < 0 ||
+ pa_tagstruct_getu32(t, &prebuf) < 0 ||
+ pa_tagstruct_getu32(t, &minreq) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ if (sink_index == (uint32_t) -1)
+ sink = pa_sink_get_default(c->protocol->core);
+ else
+ sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
+
+ if (!sink) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
+ return;
+ }
+
+ if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq))) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
+ return;
+ }
+
+ reply = pa_tagstruct_new(NULL, 0);
+ assert(reply);
+ pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+ pa_tagstruct_putu32(reply, tag);
+ pa_tagstruct_putu32(reply, s->index);
+ assert(s->sink_input);
+ pa_tagstruct_putu32(reply, s->sink_input->index);
+ pa_pstream_send_tagstruct(c->pstream, reply);
+ request_bytes(s);
+}
+
+static void command_delete_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ uint32_t channel;
+ struct playback_stream *s;
+ assert(c && t);
+
+ if (pa_tagstruct_getu32(t, &channel) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ if (!(s = pa_idxset_get_by_index(c->playback_streams, channel))) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
+ return;
+ }
+
+ playback_stream_free(s);
+ pa_pstream_send_simple_ack(c->pstream, tag);
+}
+
+static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ struct record_stream *s;
+ size_t maxlength, fragment_size;
+ uint32_t source_index;
+ const char *name;
+ struct pa_sample_spec ss;
+ struct pa_tagstruct *reply;
+ struct pa_source *source;
+ assert(c && t && c->protocol && c->protocol->core);
+
+ if (pa_tagstruct_gets(t, &name) < 0 ||
+ pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
+ pa_tagstruct_getu32(t, &source_index) < 0 ||
+ pa_tagstruct_getu32(t, &maxlength) < 0 ||
+ pa_tagstruct_getu32(t, &fragment_size) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ if (source_index == (uint32_t) -1)
+ source = pa_source_get_default(c->protocol->core);
+ else
+ source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
+
+ if (!source) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
+ return;
+ }
+
+ if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
+ return;
+ }
+
+ reply = pa_tagstruct_new(NULL, 0);
+ assert(reply);
+ pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+ pa_tagstruct_putu32(reply, tag);
+ pa_tagstruct_putu32(reply, s->index);
+ assert(s->source_output);
+ pa_tagstruct_putu32(reply, s->source_output->index);
+ pa_pstream_send_tagstruct(c->pstream, reply);
+}
+
+static void command_delete_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ uint32_t channel;
+ struct record_stream *s;
+ assert(c && t);
+
+ if (pa_tagstruct_getu32(t, &channel) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
+ return;
+ }
+
+ record_stream_free(s);
+ pa_pstream_send_simple_ack(c->pstream, tag);
+}
+
+static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ assert(c && t);
+
+ if (!pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
+ c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
+ pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
+ return;
+}
+
+static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ const void*cookie;
+ assert(c && t);
+
+ if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
+ fprintf(stderr, "protocol-native.c: Denied access to client with invalid authorization key.\n");
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ c->authorized = 1;
+ pa_pstream_send_simple_ack(c->pstream, tag);
+ return;
+}
+
+static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ const char *name;
+ assert(c && t);
+
+ if (pa_tagstruct_gets(t, &name) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ pa_client_rename(c->client, name);
+ pa_pstream_send_simple_ack(c->pstream, tag);
+ return;
+}
+
+static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ const char *name;
+ uint32_t index = PA_IDXSET_INVALID;
+ assert(c && t);
+
+ if (pa_tagstruct_gets(t, &name) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ if (command == PA_COMMAND_LOOKUP_SINK) {
+ struct pa_sink *sink;
+ if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK)))
+ index = sink->index;
+ } else {
+ struct pa_source *source;
+ assert(command == PA_COMMAND_LOOKUP_SOURCE);
+ if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE)))
+ index = source->index;
+ }
+
+ if (index == PA_IDXSET_INVALID)
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
+ else {
+ struct pa_tagstruct *reply;
+ reply = pa_tagstruct_new(NULL, 0);
+ assert(reply);
+ pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+ pa_tagstruct_putu32(reply, tag);
+ pa_tagstruct_putu32(reply, index);
+ pa_pstream_send_tagstruct(c->pstream, reply);
+ }
+}
+
+static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ uint32_t index;
+ struct playback_stream *s;
+ assert(c && t);
+
+ if (pa_tagstruct_getu32(t, &index) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ if (!(s = pa_idxset_get_by_index(c->playback_streams, index))) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
+ return;
+ }
+
+ s->drain_request = 0;
+
+ if (!pa_memblockq_is_readable(s->memblockq))
+ pa_pstream_send_simple_ack(c->pstream, tag);
+ else {
+ s->drain_request = 1;
+ s->drain_tag = tag;
+ }
+}
+
+static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ assert(c && t);
+ struct pa_tagstruct *reply;
+
+ if (!pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ reply = pa_tagstruct_new(NULL, 0);
+ assert(reply);
+ pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+ pa_tagstruct_putu32(reply, tag);
+ pa_tagstruct_putu32(reply, pa_memblock_get_count());
+ pa_tagstruct_putu32(reply, pa_memblock_get_total());
+ pa_pstream_send_tagstruct(c->pstream, reply);
+}
+
+static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
+ struct connection *c = userdata;
+ assert(c && t);
+ struct pa_tagstruct *reply;
+ struct playback_stream *s;
+ uint32_t index, latency;
+
+ if (pa_tagstruct_getu32(t, &index) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ protocol_error(c);
+ return;
+ }
+
+ if (!c->authorized) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
+ return;
+ }
+
+ if (!(s = pa_idxset_get_by_index(c->playback_streams, index))) {
+ pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
+ return;
+ }
+
+ latency = pa_sink_input_get_latency(s->sink_input);
+ reply = pa_tagstruct_new(NULL, 0);
+ assert(reply);
+ pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+ pa_tagstruct_putu32(reply, tag);
+ pa_tagstruct_putu32(reply, latency);
+ pa_pstream_send_tagstruct(c->pstream, reply);
+}
+
+/*** pstream callbacks ***/
+
+static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
+ struct connection *c = userdata;
+ assert(p && packet && packet->data && c);
+
+ if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
+ fprintf(stderr, "protocol-native: invalid packet.\n");
+ connection_free(c);
+ }
+}
+
+static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, int32_t delta, const struct pa_memchunk *chunk, void *userdata) {
+ struct connection *c = userdata;
+ struct playback_stream *stream;
+ assert(p && chunk && userdata);
+
+ if (!(stream = pa_idxset_get_by_index(c->playback_streams, channel))) {
+ fprintf(stderr, "protocol-native: client sent block for invalid stream.\n");
+ connection_free(c);
+ return;
+ }
+
+ if (chunk->length >= stream->requested_bytes)
+ stream->requested_bytes = 0;
+ else
+ stream->requested_bytes -= chunk->length;
+
+ pa_memblockq_push_align(stream->memblockq, chunk, delta);
+ assert(stream->sink_input);
+ pa_sink_notify(stream->sink_input->sink);
+
+ /*fprintf(stderr, "Recieved %u bytes.\n", chunk->length);*/
+}
+
+static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
+ struct connection *c = userdata;
+ assert(p && c);
+ connection_free(c);
+
+ fprintf(stderr, "protocol-native: connection died.\n");
+}
+
+
+static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
+ struct connection *c = userdata;
+ assert(p && c);
+
+ send_memblock(c);
+}
+
+/*** client callbacks ***/
+
+static void client_kill_cb(struct pa_client *c) {
+ assert(c && c->userdata);
+ connection_free(c->userdata);
+}
+
+/*** socket server callbacks ***/
+
+static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
+ struct pa_protocol_native *p = userdata;
+ struct connection *c;
+ assert(s && io && p);
+
+ c = malloc(sizeof(struct connection));
+ assert(c);
+ c->authorized = p->public;
+ c->protocol = p;
+ assert(p->core);
+ c->client = pa_client_new(p->core, "NATIVE", "Client");
+ assert(c->client);
+ c->client->kill = client_kill_cb;
+ c->client->userdata = c;
+ c->client->owner = p->module;
+
+ c->pstream = pa_pstream_new(p->core->mainloop, io);
+ assert(c->pstream);
+
+ pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
+ pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
+ pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
+ pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
+
+ c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
+ assert(c->pdispatch);
+
+ c->record_streams = pa_idxset_new(NULL, NULL);
+ c->playback_streams = pa_idxset_new(NULL, NULL);
+ assert(c->record_streams && c->playback_streams);
+
+ c->rrobin_index = PA_IDXSET_INVALID;
+
+ pa_idxset_put(p->connections, c, NULL);
+}
+
+/*** module entry points ***/
+
+struct pa_protocol_native* pa_protocol_native_new(struct pa_core *core, struct pa_socket_server *server, struct pa_module *m, struct pa_modargs *ma) {
+ struct pa_protocol_native *p;
+ uint32_t public;
+ assert(core && server && ma);
+
+ if (pa_modargs_get_value_u32(ma, "public", &public) < 0) {
+ fprintf(stderr, __FILE__": public= expects numeric argument.\n");
+ return NULL;
+ }
+
+ p = malloc(sizeof(struct pa_protocol_native));
+ assert(p);
+
+ if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
+ free(p);
+ return NULL;
+ }
+
+ p->module = m;
+ p->public = public;
+ p->server = server;
+ p->core = core;
+ p->connections = pa_idxset_new(NULL, NULL);
+ assert(p->connections);
+
+ pa_socket_server_set_callback(p->server, on_connection, p);
+
+ return p;
+}
+
+void pa_protocol_native_free(struct pa_protocol_native *p) {
+ struct connection *c;
+ assert(p);
+
+ while ((c = pa_idxset_first(p->connections, NULL)))
+ connection_free(c);
+ pa_idxset_free(p->connections, NULL, NULL);
+ pa_socket_server_free(p->server);
+ free(p);
+}