From 41f6aea8fdbc744c13bc461056a2d694a5c4d06f Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Sat, 17 Jul 2004 14:12:30 +0000 Subject: rename src to polyp git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f --- polyp/protocol-native.c | 863 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 863 insertions(+) create mode 100644 polyp/protocol-native.c (limited to 'polyp/protocol-native.c') 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 +#endif + +#include +#include +#include +#include + +#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); +} -- cgit