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-rw-r--r--src/pulsecore/protocol-esound.c1253
1 files changed, 1253 insertions, 0 deletions
diff --git a/src/pulsecore/protocol-esound.c b/src/pulsecore/protocol-esound.c
new file mode 100644
index 00000000..6b9112bf
--- /dev/null
+++ b/src/pulsecore/protocol-esound.c
@@ -0,0 +1,1253 @@
+/* $Id$ */
+
+/***
+ 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 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
+ 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 <config.h>
+#endif
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <limits.h>
+
+#include <pulse/sample.h>
+#include <pulse/timeval.h>
+#include <pulse/utf8.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/esound.h>
+#include <pulsecore/memblock.h>
+#include <pulsecore/client.h>
+#include <pulsecore/sink-input.h>
+#include <pulsecore/sink.h>
+#include <pulsecore/source-output.h>
+#include <pulsecore/source.h>
+#include <pulsecore/core-scache.h>
+#include <pulsecore/sample-util.h>
+#include <pulsecore/authkey.h>
+#include <pulsecore/namereg.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/core-error.h>
+
+#include "endianmacros.h"
+
+#include "protocol-esound.h"
+
+/* Don't accept more connection than this */
+#define MAX_CONNECTIONS 10
+
+/* Kick a client if it doesn't authenticate within this time */
+#define AUTH_TIMEOUT 5
+
+#define DEFAULT_COOKIE_FILE ".esd_auth"
+
+#define PLAYBACK_BUFFER_SECONDS (.25)
+#define PLAYBACK_BUFFER_FRAGMENTS (10)
+#define RECORD_BUFFER_SECONDS (5)
+#define RECORD_BUFFER_FRAGMENTS (100)
+
+#define MAX_CACHE_SAMPLE_SIZE (1024000)
+
+#define SCACHE_PREFIX "esound."
+
+/* This is heavily based on esound's code */
+
+struct connection {
+ uint32_t index;
+ int dead;
+ pa_protocol_esound *protocol;
+ pa_iochannel *io;
+ pa_client *client;
+ int authorized, swap_byte_order;
+ void *write_data;
+ size_t write_data_alloc, write_data_index, write_data_length;
+ void *read_data;
+ size_t read_data_alloc, read_data_length;
+ esd_proto_t request;
+ esd_client_state_t state;
+ pa_sink_input *sink_input;
+ pa_source_output *source_output;
+ pa_memblockq *input_memblockq, *output_memblockq;
+ pa_defer_event *defer_event;
+
+ char *original_name;
+
+ struct {
+ pa_memblock *current_memblock;
+ size_t memblock_index, fragment_size;
+ } playback;
+
+ struct {
+ pa_memchunk memchunk;
+ char *name;
+ pa_sample_spec sample_spec;
+ } scache;
+
+ pa_time_event *auth_timeout_event;
+};
+
+struct pa_protocol_esound {
+ int public;
+ pa_module *module;
+ pa_core *core;
+ pa_socket_server *server;
+ pa_idxset *connections;
+ char *sink_name, *source_name;
+ unsigned n_player;
+ uint8_t esd_key[ESD_KEY_LEN];
+};
+
+typedef struct proto_handler {
+ size_t data_length;
+ int (*proc)(struct connection *c, esd_proto_t request, const void *data, size_t length);
+ const char *description;
+} esd_proto_handler_info_t;
+
+static void sink_input_drop_cb(pa_sink_input *i, const pa_memchunk *chunk, size_t length);
+static int sink_input_peek_cb(pa_sink_input *i, pa_memchunk *chunk);
+static void sink_input_kill_cb(pa_sink_input *i);
+static pa_usec_t sink_input_get_latency_cb(pa_sink_input *i);
+static pa_usec_t source_output_get_latency_cb(pa_source_output *o);
+
+static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk);
+static void source_output_kill_cb(pa_source_output *o);
+
+static int esd_proto_connect(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_stream_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_get_latency(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_server_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_stream_pan(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_sample_cache(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_sample_get_id(struct connection *c, esd_proto_t request, const void *data, size_t length);
+static int esd_proto_standby_or_resume(struct connection *c, esd_proto_t request, const void *data, size_t length);
+
+/* the big map of protocol handler info */
+static struct proto_handler proto_map[ESD_PROTO_MAX] = {
+ { ESD_KEY_LEN + sizeof(int), esd_proto_connect, "connect" },
+ { ESD_KEY_LEN + sizeof(int), NULL, "lock" },
+ { ESD_KEY_LEN + sizeof(int), NULL, "unlock" },
+
+ { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_play, "stream play" },
+ { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream rec" },
+ { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream mon" },
+
+ { ESD_NAME_MAX + 3 * sizeof(int), esd_proto_sample_cache, "sample cache" }, /* 6 */
+ { sizeof(int), esd_proto_sample_free_or_play, "sample free" },
+ { sizeof(int), esd_proto_sample_free_or_play, "sample play" }, /* 8 */
+ { sizeof(int), NULL, "sample loop" },
+ { sizeof(int), NULL, "sample stop" },
+ { -1, NULL, "TODO: sample kill" },
+
+ { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "standby" }, /* NOOP! */
+ { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "resume" }, /* NOOP! */ /* 13 */
+
+ { ESD_NAME_MAX, esd_proto_sample_get_id, "sample getid" }, /* 14 */
+ { ESD_NAME_MAX + 2 * sizeof(int), NULL, "stream filter" },
+
+ { sizeof(int), esd_proto_server_info, "server info" },
+ { sizeof(int), esd_proto_all_info, "all info" },
+ { -1, NULL, "TODO: subscribe" },
+ { -1, NULL, "TODO: unsubscribe" },
+
+ { 3 * sizeof(int), esd_proto_stream_pan, "stream pan"},
+ { 3 * sizeof(int), NULL, "sample pan" },
+
+ { sizeof(int), NULL, "standby mode" },
+ { 0, esd_proto_get_latency, "get latency" }
+};
+
+static void connection_free(struct connection *c) {
+ assert(c);
+ pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
+
+ if (c->state == ESD_STREAMING_DATA)
+ c->protocol->n_player--;
+
+ pa_client_free(c->client);
+
+ if (c->sink_input) {
+ pa_sink_input_disconnect(c->sink_input);
+ pa_sink_input_unref(c->sink_input);
+ }
+
+ if (c->source_output) {
+ pa_source_output_disconnect(c->source_output);
+ pa_source_output_unref(c->source_output);
+ }
+
+ if (c->input_memblockq)
+ pa_memblockq_free(c->input_memblockq);
+ if (c->output_memblockq)
+ pa_memblockq_free(c->output_memblockq);
+
+ if (c->playback.current_memblock)
+ pa_memblock_unref(c->playback.current_memblock);
+
+ pa_xfree(c->read_data);
+ pa_xfree(c->write_data);
+
+ if (c->io)
+ pa_iochannel_free(c->io);
+
+ if (c->defer_event)
+ c->protocol->core->mainloop->defer_free(c->defer_event);
+
+ if (c->scache.memchunk.memblock)
+ pa_memblock_unref(c->scache.memchunk.memblock);
+ pa_xfree(c->scache.name);
+
+ if (c->auth_timeout_event)
+ c->protocol->core->mainloop->time_free(c->auth_timeout_event);
+
+ pa_xfree(c->original_name);
+ pa_xfree(c);
+}
+
+static void connection_write_prepare(struct connection *c, size_t length) {
+ size_t t;
+ assert(c);
+
+ t = c->write_data_length+length;
+
+ if (c->write_data_alloc < t)
+ c->write_data = pa_xrealloc(c->write_data, c->write_data_alloc = t);
+
+ assert(c->write_data);
+}
+
+static void connection_write(struct connection *c, const void *data, size_t length) {
+ size_t i;
+ assert(c);
+
+ assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
+ c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
+
+ connection_write_prepare(c, length);
+
+ assert(c->write_data);
+
+ i = c->write_data_length;
+ c->write_data_length += length;
+
+ memcpy((char*)c->write_data + i, data, length);
+}
+
+static void format_esd2native(int format, int swap_bytes, pa_sample_spec *ss) {
+ assert(ss);
+
+ ss->channels = ((format & ESD_MASK_CHAN) == ESD_STEREO) ? 2 : 1;
+ if ((format & ESD_MASK_BITS) == ESD_BITS16)
+ ss->format = swap_bytes ? PA_SAMPLE_S16RE : PA_SAMPLE_S16NE;
+ else
+ ss->format = PA_SAMPLE_U8;
+}
+
+static int format_native2esd(pa_sample_spec *ss) {
+ int format = 0;
+
+ format = (ss->format == PA_SAMPLE_U8) ? ESD_BITS8 : ESD_BITS16;
+ format |= (ss->channels >= 2) ? ESD_STEREO : ESD_MONO;
+
+ return format;
+}
+
+#define CHECK_VALIDITY(expression, string) do { \
+ if (!(expression)) { \
+ pa_log_warn(__FILE__ ": " string); \
+ return -1; \
+ } \
+} while(0);
+
+/*** esound commands ***/
+
+static int esd_proto_connect(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
+ uint32_t ekey;
+ int ok;
+
+ assert(length == (ESD_KEY_LEN + sizeof(uint32_t)));
+
+ if (!c->authorized) {
+ if (memcmp(data, c->protocol->esd_key, ESD_KEY_LEN) != 0) {
+ pa_log(__FILE__": kicked client with invalid authorization key.");
+ return -1;
+ }
+
+ c->authorized = 1;
+ if (c->auth_timeout_event) {
+ c->protocol->core->mainloop->time_free(c->auth_timeout_event);
+ c->auth_timeout_event = NULL;
+ }
+ }
+
+ data = (const char*)data + ESD_KEY_LEN;
+
+ memcpy(&ekey, data, sizeof(uint32_t));
+ if (ekey == ESD_ENDIAN_KEY)
+ c->swap_byte_order = 0;
+ else if (ekey == ESD_SWAP_ENDIAN_KEY)
+ c->swap_byte_order = 1;
+ else {
+ pa_log(__FILE__": client sent invalid endian key");
+ return -1;
+ }
+
+ ok = 1;
+ connection_write(c, &ok, sizeof(int));
+ return 0;
+}
+
+static int esd_proto_stream_play(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
+ char name[ESD_NAME_MAX], *utf8_name;
+ int32_t format, rate;
+ pa_sink *sink;
+ pa_sample_spec ss;
+ size_t l;
+
+ assert(c && length == (sizeof(int32_t)*2+ESD_NAME_MAX));
+
+ memcpy(&format, data, sizeof(int32_t));
+ format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
+ data = (const char*)data + sizeof(int32_t);
+
+ memcpy(&rate, data, sizeof(int32_t));
+ rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
+ data = (const char*)data + sizeof(int32_t);
+
+ ss.rate = rate;
+ format_esd2native(format, c->swap_byte_order, &ss);
+
+ CHECK_VALIDITY(pa_sample_spec_valid(&ss), "Invalid sample specification");
+ sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1);
+ CHECK_VALIDITY(sink, "No such sink");
+
+ strncpy(name, data, sizeof(name));
+ name[sizeof(name)-1] = 0;
+ utf8_name = pa_utf8_filter(name);
+
+ pa_client_set_name(c->client, utf8_name);
+ c->original_name = pa_xstrdup(name);
+
+ assert(!c->sink_input && !c->input_memblockq);
+
+ c->sink_input = pa_sink_input_new(sink, __FILE__, utf8_name, &ss, NULL, NULL, 0, -1);
+
+ pa_xfree(utf8_name);
+
+ CHECK_VALIDITY(c->sink_input, "Failed to create sink input.");
+
+ l = (size_t) (pa_bytes_per_second(&ss)*PLAYBACK_BUFFER_SECONDS);
+ c->input_memblockq = pa_memblockq_new(
+ 0,
+ l,
+ 0,
+ pa_frame_size(&ss),
+ (size_t) -1,
+ l/PLAYBACK_BUFFER_FRAGMENTS,
+ NULL,
+ c->protocol->core->memblock_stat);
+ pa_iochannel_socket_set_rcvbuf(c->io, l/PLAYBACK_BUFFER_FRAGMENTS*2);
+ c->playback.fragment_size = l/10;
+
+ c->sink_input->owner = c->protocol->module;
+ c->sink_input->client = c->client;
+ c->sink_input->peek = sink_input_peek_cb;
+ c->sink_input->drop = sink_input_drop_cb;
+ c->sink_input->kill = sink_input_kill_cb;
+ c->sink_input->get_latency = sink_input_get_latency_cb;
+ c->sink_input->userdata = c;
+
+ c->state = ESD_STREAMING_DATA;
+
+ c->protocol->n_player++;
+
+ return 0;
+}
+
+static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length) {
+ char name[ESD_NAME_MAX], *utf8_name;
+ int32_t format, rate;
+ pa_source *source;
+ pa_sample_spec ss;
+ size_t l;
+
+ assert(c && length == (sizeof(int32_t)*2+ESD_NAME_MAX));
+
+ memcpy(&format, data, sizeof(int32_t));
+ format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
+ data = (const char*)data + sizeof(int32_t);
+
+ memcpy(&rate, data, sizeof(int32_t));
+ rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
+ data = (const char*)data + sizeof(int32_t);
+
+ ss.rate = rate;
+ format_esd2native(format, c->swap_byte_order, &ss);
+
+ CHECK_VALIDITY(pa_sample_spec_valid(&ss), "Invalid sample specification.");
+
+ if (request == ESD_PROTO_STREAM_MON) {
+ pa_sink* sink;
+
+ if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
+ pa_log(__FILE__": no such sink.");
+ return -1;
+ }
+
+ if (!(source = sink->monitor_source)) {
+ pa_log(__FILE__": no such monitor source.");
+ return -1;
+ }
+ } else {
+ assert(request == ESD_PROTO_STREAM_REC);
+
+ if (!(source = pa_namereg_get(c->protocol->core, c->protocol->source_name, PA_NAMEREG_SOURCE, 1))) {
+ pa_log(__FILE__": no such source.");
+ return -1;
+ }
+ }
+
+ strncpy(name, data, sizeof(name));
+ name[sizeof(name)-1] = 0;
+
+ utf8_name = pa_utf8_filter(name);
+ pa_client_set_name(c->client, utf8_name);
+ pa_xfree(utf8_name);
+
+ c->original_name = pa_xstrdup(name);
+
+ assert(!c->output_memblockq && !c->source_output);
+
+ if (!(c->source_output = pa_source_output_new(source, __FILE__, c->client->name, &ss, NULL, -1))) {
+ pa_log(__FILE__": failed to create source output");
+ return -1;
+ }
+
+ l = (size_t) (pa_bytes_per_second(&ss)*RECORD_BUFFER_SECONDS);
+ c->output_memblockq = pa_memblockq_new(
+ 0,
+ l,
+ 0,
+ pa_frame_size(&ss),
+ 1,
+ 0,
+ NULL,
+ c->protocol->core->memblock_stat);
+ pa_iochannel_socket_set_sndbuf(c->io, l/RECORD_BUFFER_FRAGMENTS*2);
+
+ c->source_output->owner = c->protocol->module;
+ c->source_output->client = c->client;
+ c->source_output->push = source_output_push_cb;
+ c->source_output->kill = source_output_kill_cb;
+ c->source_output->get_latency = source_output_get_latency_cb;
+ c->source_output->userdata = c;
+
+ c->state = ESD_STREAMING_DATA;
+
+ c->protocol->n_player++;
+
+ return 0;
+}
+
+static int esd_proto_get_latency(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
+ pa_sink *sink;
+ int32_t latency;
+
+ assert(c && !data && length == 0);
+
+ if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
+ latency = 0;
+ else {
+ double usec = pa_sink_get_latency(sink);
+ latency = (int) ((usec*44100)/1000000);
+ }
+
+ latency = MAYBE_INT32_SWAP(c->swap_byte_order, latency);
+ connection_write(c, &latency, sizeof(int32_t));
+ return 0;
+}
+
+static int esd_proto_server_info(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
+ int32_t rate = 44100, format = ESD_STEREO|ESD_BITS16;
+ int32_t response;
+ pa_sink *sink;
+
+ assert(c && data && length == sizeof(int32_t));
+
+ if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
+ rate = sink->sample_spec.rate;
+ format = format_native2esd(&sink->sample_spec);
+ }
+
+ connection_write_prepare(c, sizeof(int32_t) * 3);
+
+ response = 0;
+ connection_write(c, &response, sizeof(int32_t));
+ rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
+ connection_write(c, &rate, sizeof(int32_t));
+ format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
+ connection_write(c, &format, sizeof(int32_t));
+
+ return 0;
+}
+
+static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length) {
+ size_t t, k, s;
+ struct connection *conn;
+ uint32_t idx = PA_IDXSET_INVALID;
+ unsigned nsamples;
+ char terminator[sizeof(int32_t)*6+ESD_NAME_MAX];
+
+ assert(c && data && length == sizeof(int32_t));
+
+ if (esd_proto_server_info(c, request, data, length) < 0)
+ return -1;
+
+ k = sizeof(int32_t)*5+ESD_NAME_MAX;
+ s = sizeof(int32_t)*6+ESD_NAME_MAX;
+ nsamples = c->protocol->core->scache ? pa_idxset_size(c->protocol->core->scache) : 0;
+ t = s*(nsamples+1) + k*(c->protocol->n_player+1);
+
+ connection_write_prepare(c, t);
+
+ memset(terminator, 0, sizeof(terminator));
+
+ for (conn = pa_idxset_first(c->protocol->connections, &idx); conn; conn = pa_idxset_next(c->protocol->connections, &idx)) {
+ int32_t id, format = ESD_BITS16 | ESD_STEREO, rate = 44100, lvolume = ESD_VOLUME_BASE, rvolume = ESD_VOLUME_BASE;
+ char name[ESD_NAME_MAX];
+
+ if (conn->state != ESD_STREAMING_DATA)
+ continue;
+
+ assert(t >= k*2+s);
+
+ if (conn->sink_input) {
+ pa_cvolume volume = *pa_sink_input_get_volume(conn->sink_input);
+ rate = conn->sink_input->sample_spec.rate;
+ lvolume = (volume.values[0]*ESD_VOLUME_BASE)/PA_VOLUME_NORM;
+ rvolume = (volume.values[1]*ESD_VOLUME_BASE)/PA_VOLUME_NORM;
+ format = format_native2esd(&conn->sink_input->sample_spec);
+ }
+
+ /* id */
+ id = MAYBE_INT32_SWAP(c->swap_byte_order, (int32_t) (conn->index+1));
+ connection_write(c, &id, sizeof(int32_t));
+
+ /* name */
+ memset(name, 0, ESD_NAME_MAX); /* don't leak old data */
+ if (conn->original_name)
+ strncpy(name, conn->original_name, ESD_NAME_MAX);
+ else if (conn->client && conn->client->name)
+ strncpy(name, conn->client->name, ESD_NAME_MAX);
+ connection_write(c, name, ESD_NAME_MAX);
+
+ /* rate */
+ rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
+ connection_write(c, &rate, sizeof(int32_t));
+
+ /* left */
+ lvolume = MAYBE_INT32_SWAP(c->swap_byte_order, lvolume);
+ connection_write(c, &lvolume, sizeof(int32_t));
+
+ /*right*/
+ rvolume = MAYBE_INT32_SWAP(c->swap_byte_order, rvolume);
+ connection_write(c, &rvolume, sizeof(int32_t));
+
+ /*format*/
+ format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
+ connection_write(c, &format, sizeof(int32_t));
+
+ t -= k;
+ }
+
+ assert(t == s*(nsamples+1)+k);
+ t -= k;
+
+ connection_write(c, terminator, k);
+
+ if (nsamples) {
+ pa_scache_entry *ce;
+
+ idx = PA_IDXSET_INVALID;
+ for (ce = pa_idxset_first(c->protocol->core->scache, &idx); ce; ce = pa_idxset_next(c->protocol->core->scache, &idx)) {
+ int32_t id, rate, lvolume, rvolume, format, len;
+ char name[ESD_NAME_MAX];
+
+ assert(t >= s*2);
+
+ /* id */
+ id = MAYBE_INT32_SWAP(c->swap_byte_order, (int) (ce->index+1));
+ connection_write(c, &id, sizeof(int32_t));
+
+ /* name */
+ memset(name, 0, ESD_NAME_MAX); /* don't leak old data */
+ if (strncmp(ce->name, SCACHE_PREFIX, sizeof(SCACHE_PREFIX)-1) == 0)
+ strncpy(name, ce->name+sizeof(SCACHE_PREFIX)-1, ESD_NAME_MAX);
+ else
+ snprintf(name, ESD_NAME_MAX, "native.%s", ce->name);
+ connection_write(c, name, ESD_NAME_MAX);
+
+ /* rate */
+ rate = MAYBE_UINT32_SWAP(c->swap_byte_order, ce->sample_spec.rate);
+ connection_write(c, &rate, sizeof(int32_t));
+
+ /* left */
+ lvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, (ce->volume.values[0]*ESD_VOLUME_BASE)/PA_VOLUME_NORM);
+ connection_write(c, &lvolume, sizeof(int32_t));
+
+ /*right*/
+ rvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, (ce->volume.values[0]*ESD_VOLUME_BASE)/PA_VOLUME_NORM);
+ connection_write(c, &rvolume, sizeof(int32_t));
+
+ /*format*/
+ format = MAYBE_INT32_SWAP(c->swap_byte_order, format_native2esd(&ce->sample_spec));
+ connection_write(c, &format, sizeof(int32_t));
+
+ /*length*/
+ len = MAYBE_INT32_SWAP(c->swap_byte_order, (int) ce->memchunk.length);
+ connection_write(c, &len, sizeof(int32_t));
+
+ t -= s;
+ }
+ }
+
+ assert(t == s);
+
+ connection_write(c, terminator, s);
+
+ return 0;
+}
+
+static int esd_proto_stream_pan(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
+ int32_t ok;
+ uint32_t idx, lvolume, rvolume;
+ struct connection *conn;
+
+ assert(c && data && length == sizeof(int32_t)*3);
+
+ memcpy(&idx, data, sizeof(uint32_t));
+ idx = MAYBE_UINT32_SWAP(c->swap_byte_order, idx) - 1;
+ data = (const char*)data + sizeof(uint32_t);
+
+ memcpy(&lvolume, data, sizeof(uint32_t));
+ lvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, lvolume);
+ data = (const char*)data + sizeof(uint32_t);
+
+ memcpy(&rvolume, data, sizeof(uint32_t));
+ rvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, rvolume);
+ data = (const char*)data + sizeof(uint32_t);
+
+ if ((conn = pa_idxset_get_by_index(c->protocol->connections, idx)) && conn->sink_input) {
+ pa_cvolume volume;
+ volume.values[0] = (lvolume*PA_VOLUME_NORM)/ESD_VOLUME_BASE;
+ volume.values[1] = (rvolume*PA_VOLUME_NORM)/ESD_VOLUME_BASE;
+ volume.channels = 2;
+ pa_sink_input_set_volume(conn->sink_input, &volume);
+ ok = 1;
+ } else
+ ok = 0;
+
+ connection_write(c, &ok, sizeof(int32_t));
+
+ return 0;
+}
+
+static int esd_proto_sample_cache(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
+ pa_sample_spec ss;
+ int32_t format, rate, sc_length;
+ uint32_t idx;
+ char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
+
+ assert(c && data && length == (ESD_NAME_MAX+3*sizeof(int32_t)));
+
+ memcpy(&format, data, sizeof(int32_t));
+ format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
+ data = (const char*)data + sizeof(int32_t);
+
+ memcpy(&rate, data, sizeof(int32_t));
+ rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
+ data = (const char*)data + sizeof(int32_t);
+
+ ss.rate = rate;
+ format_esd2native(format, c->swap_byte_order, &ss);
+
+ CHECK_VALIDITY(pa_sample_spec_valid(&ss), "Invalid sample specification.");
+
+ memcpy(&sc_length, data, sizeof(int32_t));
+ sc_length = MAYBE_INT32_SWAP(c->swap_byte_order, sc_length);
+ data = (const char*)data + sizeof(int32_t);
+
+ CHECK_VALIDITY(sc_length <= MAX_CACHE_SAMPLE_SIZE, "Sample too large.");
+
+ strcpy(name, SCACHE_PREFIX);
+ strncpy(name+sizeof(SCACHE_PREFIX)-1, data, ESD_NAME_MAX);
+ name[sizeof(name)-1] = 0;
+
+ CHECK_VALIDITY(pa_utf8_valid(name), "Invalid UTF8 in sample name.");
+
+ assert(!c->scache.memchunk.memblock);
+ c->scache.memchunk.memblock = pa_memblock_new(sc_length, c->protocol->core->memblock_stat);
+ c->scache.memchunk.index = 0;
+ c->scache.memchunk.length = sc_length;
+ c->scache.sample_spec = ss;
+ assert(!c->scache.name);
+ c->scache.name = pa_xstrdup(name);
+
+ c->state = ESD_CACHING_SAMPLE;
+
+ pa_scache_add_item(c->protocol->core, c->scache.name, NULL, NULL, NULL, &idx);
+
+ idx += 1;
+ connection_write(c, &idx, sizeof(uint32_t));
+
+ return 0;
+}
+
+static int esd_proto_sample_get_id(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
+ int32_t ok;
+ uint32_t idx;
+ char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
+
+ assert(c && data && length == ESD_NAME_MAX);
+
+ strcpy(name, SCACHE_PREFIX);
+ strncpy(name+sizeof(SCACHE_PREFIX)-1, data, ESD_NAME_MAX);
+ name[sizeof(name)-1] = 0;
+
+ CHECK_VALIDITY(pa_utf8_valid(name), "Invalid UTF8 in sample name.");
+
+ ok = -1;
+ if ((idx = pa_scache_get_id_by_name(c->protocol->core, name)) != PA_IDXSET_INVALID)
+ ok = idx + 1;
+
+ connection_write(c, &ok, sizeof(int32_t));
+
+ return 0;
+}
+
+static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length) {
+ int32_t ok;
+ const char *name;
+ uint32_t idx;
+
+ assert(c && data && length == sizeof(int32_t));
+
+ memcpy(&idx, data, sizeof(uint32_t));
+ idx = MAYBE_UINT32_SWAP(c->swap_byte_order, idx) - 1;
+
+ ok = 0;
+
+ if ((name = pa_scache_get_name_by_id(c->protocol->core, idx))) {
+ if (request == ESD_PROTO_SAMPLE_PLAY) {
+ pa_sink *sink;
+
+ if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
+ if (pa_scache_play_item(c->protocol->core, name, sink, PA_VOLUME_NORM) >= 0)
+ ok = idx + 1;
+ } else {
+ assert(request == ESD_PROTO_SAMPLE_FREE);
+
+ if (pa_scache_remove_item(c->protocol->core, name) >= 0)
+ ok = idx + 1;
+ }
+ }
+
+ connection_write(c, &ok, sizeof(int32_t));
+
+ return 0;
+}
+
+static int esd_proto_standby_or_resume(struct connection *c, PA_GCC_UNUSED esd_proto_t request, PA_GCC_UNUSED const void *data, PA_GCC_UNUSED size_t length) {
+ int32_t ok;
+
+ connection_write_prepare(c, sizeof(int32_t) * 2);
+
+ ok = 1;
+ connection_write(c, &ok, sizeof(int32_t));
+ connection_write(c, &ok, sizeof(int32_t));
+
+ return 0;
+}
+
+/*** client callbacks ***/
+
+static void client_kill_cb(pa_client *c) {
+ assert(c && c->userdata);
+ connection_free(c->userdata);
+}
+
+/*** pa_iochannel callbacks ***/
+
+static int do_read(struct connection *c) {
+ assert(c && c->io);
+
+/* pa_log("READ"); */
+
+ if (c->state == ESD_NEXT_REQUEST) {
+ ssize_t r;
+ assert(c->read_data_length < sizeof(c->request));
+
+ if ((r = pa_iochannel_read(c->io, ((uint8_t*) &c->request) + c->read_data_length, sizeof(c->request) - c->read_data_length)) <= 0) {
+ pa_log_debug(__FILE__": read(): %s", r < 0 ? pa_cstrerror(errno) : "EOF");
+ return -1;
+ }
+
+ if ((c->read_data_length+= r) >= sizeof(c->request)) {
+ struct proto_handler *handler;
+
+ c->request = MAYBE_INT32_SWAP(c->swap_byte_order, c->request);
+
+ if (c->request < ESD_PROTO_CONNECT || c->request > ESD_PROTO_MAX) {
+ pa_log(__FILE__": recieved invalid request.");
+ return -1;
+ }
+
+ handler = proto_map+c->request;
+
+/* pa_log(__FILE__": executing request #%u", c->request); */
+
+ if (!handler->proc) {
+ pa_log(__FILE__": recieved unimplemented request #%u.", c->request);
+ return -1;
+ }
+
+ if (handler->data_length == 0) {
+ c->read_data_length = 0;
+
+ if (handler->proc(c, c->request, NULL, 0) < 0)
+ return -1;
+
+ } else {
+ if (c->read_data_alloc < handler->data_length)
+ c->read_data = pa_xrealloc(c->read_data, c->read_data_alloc = handler->data_length);
+ assert(c->read_data);
+
+ c->state = ESD_NEEDS_REQDATA;
+ c->read_data_length = 0;
+ }
+ }
+
+ } else if (c->state == ESD_NEEDS_REQDATA) {
+ ssize_t r;
+ struct proto_handler *handler = proto_map+c->request;
+
+ assert(handler->proc);
+
+ assert(c->read_data && c->read_data_length < handler->data_length);
+
+ if ((r = pa_iochannel_read(c->io, (uint8_t*) c->read_data + c->read_data_length, handler->data_length - c->read_data_length)) <= 0) {
+ pa_log_debug(__FILE__": read(): %s", r < 0 ? pa_cstrerror(errno) : "EOF");
+ return -1;
+ }
+
+ if ((c->read_data_length += r) >= handler->data_length) {
+ size_t l = c->read_data_length;
+ assert(handler->proc);
+
+ c->state = ESD_NEXT_REQUEST;
+ c->read_data_length = 0;
+
+ if (handler->proc(c, c->request, c->read_data, l) < 0)
+ return -1;
+ }
+ } else if (c->state == ESD_CACHING_SAMPLE) {
+ ssize_t r;
+
+ assert(c->scache.memchunk.memblock && c->scache.name && c->scache.memchunk.index < c->scache.memchunk.length);
+
+ if ((r = pa_iochannel_read(c->io, (uint8_t*) c->scache.memchunk.memblock->data+c->scache.memchunk.index, c->scache.memchunk.length-c->scache.memchunk.index)) <= 0) {
+ pa_log_debug(__FILE__": read(): %s", r < 0 ? pa_cstrerror(errno) : "EOF");
+ return -1;
+ }
+
+ c->scache.memchunk.index += r;
+ assert(c->scache.memchunk.index <= c->scache.memchunk.length);
+
+ if (c->scache.memchunk.index == c->scache.memchunk.length) {
+ uint32_t idx;
+
+ c->scache.memchunk.index = 0;
+ pa_scache_add_item(c->protocol->core, c->scache.name, &c->scache.sample_spec, NULL, &c->scache.memchunk, &idx);
+
+ pa_memblock_unref(c->scache.memchunk.memblock);
+ c->scache.memchunk.memblock = NULL;
+ c->scache.memchunk.index = c->scache.memchunk.length = 0;
+
+ pa_xfree(c->scache.name);
+ c->scache.name = NULL;
+
+ c->state = ESD_NEXT_REQUEST;
+
+ idx += 1;
+ connection_write(c, &idx, sizeof(uint32_t));
+ }
+
+ } else if (c->state == ESD_STREAMING_DATA && c->sink_input) {
+ pa_memchunk chunk;
+ ssize_t r;
+ size_t l;
+
+ assert(c->input_memblockq);
+
+/* pa_log("STREAMING_DATA"); */
+
+ if (!(l = pa_memblockq_missing(c->input_memblockq)))
+ return 0;
+
+ if (l > c->playback.fragment_size)
+ l = c->playback.fragment_size;
+
+ if (c->playback.current_memblock)
+ if (c->playback.current_memblock->length - c->playback.memblock_index < l) {
+ pa_memblock_unref(c->playback.current_memblock);
+ c->playback.current_memblock = NULL;
+ c->playback.memblock_index = 0;
+ }
+
+ if (!c->playback.current_memblock) {
+ c->playback.current_memblock = pa_memblock_new(c->playback.fragment_size*2, c->protocol->core->memblock_stat);
+ assert(c->playback.current_memblock && c->playback.current_memblock->length >= l);
+ c->playback.memblock_index = 0;
+ }
+
+ if ((r = pa_iochannel_read(c->io, (uint8_t*) c->playback.current_memblock->data+c->playback.memblock_index, l)) <= 0) {
+ pa_log_debug(__FILE__": read(): %s", r < 0 ? pa_cstrerror(errno) : "EOF");
+ return -1;
+ }
+
+ chunk.memblock = c->playback.current_memblock;
+ chunk.index = c->playback.memblock_index;
+ chunk.length = r;
+ assert(chunk.memblock);
+
+ c->playback.memblock_index += r;
+
+ assert(c->input_memblockq);
+ pa_memblockq_push_align(c->input_memblockq, &chunk);
+ assert(c->sink_input);
+ pa_sink_notify(c->sink_input->sink);
+ }
+
+ return 0;
+}
+
+static int do_write(struct connection *c) {
+ assert(c && c->io);
+
+/* pa_log("WRITE"); */
+
+ if (c->write_data_length) {
+ ssize_t r;
+
+ assert(c->write_data_index < c->write_data_length);
+ if ((r = pa_iochannel_write(c->io, (uint8_t*) c->write_data+c->write_data_index, c->write_data_length-c->write_data_index)) < 0) {
+ pa_log(__FILE__": write(): %s", pa_cstrerror(errno));
+ return -1;
+ }
+
+ if ((c->write_data_index +=r) >= c->write_data_length)
+ c->write_data_length = c->write_data_index = 0;
+
+ } else if (c->state == ESD_STREAMING_DATA && c->source_output) {
+ pa_memchunk chunk;
+ ssize_t r;
+
+ assert(c->output_memblockq);
+ if (pa_memblockq_peek(c->output_memblockq, &chunk) < 0)
+ return 0;
+
+ assert(chunk.memblock && chunk.length);
+
+ if ((r = pa_iochannel_write(c->io, (uint8_t*) chunk.memblock->data+chunk.index, chunk.length)) < 0) {
+ pa_memblock_unref(chunk.memblock);
+ pa_log(__FILE__": write(): %s", pa_cstrerror(errno));
+ return -1;
+ }
+
+ pa_memblockq_drop(c->output_memblockq, &chunk, r);
+ pa_memblock_unref(chunk.memblock);
+
+ pa_source_notify(c->source_output->source);
+ }
+
+ return 0;
+}
+
+static void do_work(struct connection *c) {
+ assert(c);
+
+ assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
+ c->protocol->core->mainloop->defer_enable(c->defer_event, 0);
+
+ if (c->dead)
+ return;
+
+ if (pa_iochannel_is_readable(c->io)) {
+ if (do_read(c) < 0)
+ goto fail;
+ }
+
+ if (c->state == ESD_STREAMING_DATA && c->source_output && pa_iochannel_is_hungup(c->io))
+ /* In case we are in capture mode we will never call read()
+ * on the socket, hence we need to detect the hangup manually
+ * here, instead of simply waiting for read() to return 0. */
+ goto fail;
+
+ if (pa_iochannel_is_writable(c->io))
+ if (do_write(c) < 0)
+ goto fail;
+
+ return;
+
+fail:
+
+ if (c->state == ESD_STREAMING_DATA && c->sink_input) {
+ c->dead = 1;
+
+ pa_iochannel_free(c->io);
+ c->io = NULL;
+
+ pa_memblockq_prebuf_disable(c->input_memblockq);
+ pa_sink_notify(c->sink_input->sink);
+ } else
+ connection_free(c);
+}
+
+static void io_callback(pa_iochannel*io, void *userdata) {
+ struct connection *c = userdata;
+ assert(io && c && c->io == io);
+
+ do_work(c);
+}
+
+/*** defer callback ***/
+
+static void defer_callback(pa_mainloop_api*a, pa_defer_event *e, void *userdata) {
+ struct connection *c = userdata;
+ assert(a && c && c->defer_event == e);
+
+/* pa_log("DEFER"); */
+
+ do_work(c);
+}
+
+/*** sink_input callbacks ***/
+
+static int sink_input_peek_cb(pa_sink_input *i, pa_memchunk *chunk) {
+ struct connection*c;
+ assert(i && i->userdata && chunk);
+ c = i->userdata;
+
+ if (pa_memblockq_peek(c->input_memblockq, chunk) < 0) {
+
+ if (c->dead)
+ connection_free(c);
+
+ return -1;
+ }
+
+ return 0;
+}
+
+static void sink_input_drop_cb(pa_sink_input *i, const pa_memchunk *chunk, size_t length) {
+ struct connection*c = i->userdata;
+ assert(i && c && length);
+
+/* pa_log("DROP"); */
+
+ pa_memblockq_drop(c->input_memblockq, chunk, length);
+
+ /* do something */
+ assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
+
+ if (!c->dead)
+ c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
+
+/* assert(pa_memblockq_get_length(c->input_memblockq) > 2048); */
+}
+
+static void sink_input_kill_cb(pa_sink_input *i) {
+ assert(i && i->userdata);
+ connection_free((struct connection *) i->userdata);
+}
+
+static pa_usec_t sink_input_get_latency_cb(pa_sink_input *i) {
+ struct connection*c = i->userdata;
+ assert(i && c);
+ return pa_bytes_to_usec(pa_memblockq_get_length(c->input_memblockq), &c->sink_input->sample_spec);
+}
+
+/*** source_output callbacks ***/
+
+static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
+ struct connection *c = o->userdata;
+ assert(o && c && chunk);
+
+ pa_memblockq_push(c->output_memblockq, chunk);
+
+ /* do something */
+ assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
+
+ if (!c->dead)
+ c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
+}
+
+static void source_output_kill_cb(pa_source_output *o) {
+ assert(o && o->userdata);
+ connection_free((struct connection *) o->userdata);
+}
+
+static pa_usec_t source_output_get_latency_cb(pa_source_output *o) {
+ struct connection*c = o->userdata;
+ assert(o && c);
+ return pa_bytes_to_usec(pa_memblockq_get_length(c->output_memblockq), &c->source_output->sample_spec);
+}
+
+/*** socket server callback ***/
+
+static void auth_timeout(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
+ struct connection *c = userdata;
+ assert(m && tv && c && c->auth_timeout_event == e);
+
+ if (!c->authorized)
+ connection_free(c);
+}
+
+static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
+ struct connection *c;
+ pa_protocol_esound *p = userdata;
+ char cname[256], pname[128];
+ assert(s && io && p);
+
+ if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
+ pa_log(__FILE__": Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
+ pa_iochannel_free(io);
+ return;
+ }
+
+ c = pa_xnew(struct connection, 1);
+ c->protocol = p;
+ c->io = io;
+ pa_iochannel_set_callback(c->io, io_callback, c);
+
+ pa_iochannel_socket_peer_to_string(io, pname, sizeof(pname));
+ snprintf(cname, sizeof(cname), "EsounD client (%s)", pname);
+ assert(p->core);
+ c->client = pa_client_new(p->core, __FILE__, cname);
+ assert(c->client);
+ c->client->owner = p->module;
+ c->client->kill = client_kill_cb;
+ c->client->userdata = c;
+
+ c->authorized = p->public;
+ c->swap_byte_order = 0;
+ c->dead = 0;
+
+ c->read_data_length = 0;
+ c->read_data = pa_xmalloc(c->read_data_alloc = proto_map[ESD_PROTO_CONNECT].data_length);
+
+ c->write_data_length = c->write_data_index = c->write_data_alloc = 0;
+ c->write_data = NULL;
+
+ c->state = ESD_NEEDS_REQDATA;
+ c->request = ESD_PROTO_CONNECT;
+
+ c->sink_input = NULL;
+ c->input_memblockq = NULL;
+
+ c->source_output = NULL;
+ c->output_memblockq = NULL;
+
+ c->playback.current_memblock = NULL;
+ c->playback.memblock_index = 0;
+ c->playback.fragment_size = 0;
+
+ c->scache.memchunk.length = c->scache.memchunk.index = 0;
+ c->scache.memchunk.memblock = NULL;
+ c->scache.name = NULL;
+
+ c->original_name = NULL;
+
+ if (!c->authorized) {
+ struct timeval tv;
+ pa_gettimeofday(&tv);
+ tv.tv_sec += AUTH_TIMEOUT;
+ c->auth_timeout_event = p->core->mainloop->time_new(p->core->mainloop, &tv, auth_timeout, c);
+ } else
+ c->auth_timeout_event = NULL;
+
+ c->defer_event = p->core->mainloop->defer_new(p->core->mainloop, defer_callback, c);
+ assert(c->defer_event);
+ p->core->mainloop->defer_enable(c->defer_event, 0);
+
+ pa_idxset_put(p->connections, c, &c->index);
+}
+
+/*** entry points ***/
+
+pa_protocol_esound* pa_protocol_esound_new(pa_core*core, pa_socket_server *server, pa_module *m, pa_modargs *ma) {
+ pa_protocol_esound *p;
+ int public = 0;
+ assert(core && server && ma);
+
+ p = pa_xnew(pa_protocol_esound, 1);
+
+ if (pa_modargs_get_value_boolean(ma, "auth-anonymous", &public) < 0) {
+ pa_log(__FILE__": auth-anonymous= expects a boolean argument.");
+ return NULL;
+ }
+
+ if (pa_authkey_load_auto(pa_modargs_get_value(ma, "cookie", DEFAULT_COOKIE_FILE), p->esd_key, sizeof(p->esd_key)) < 0) {
+ pa_xfree(p);
+ return NULL;
+ }
+
+ p->module = m;
+ p->public = public;
+ p->server = server;
+ pa_socket_server_set_callback(p->server, on_connection, p);
+ p->core = core;
+ p->connections = pa_idxset_new(NULL, NULL);
+ assert(p->connections);
+
+ p->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
+ p->source_name = pa_xstrdup(pa_modargs_get_value(ma, "source", NULL));
+ p->n_player = 0;
+
+ return p;
+}
+
+void pa_protocol_esound_free(pa_protocol_esound *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_unref(p->server);
+ pa_xfree(p);
+}