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authorLennart Poettering <lennart@poettering.net>2009-04-28 02:29:01 +0200
committerLennart Poettering <lennart@poettering.net>2009-04-28 02:29:01 +0200
commit0368d6e22b9d7e6fec2474d158eaec16c90054f5 (patch)
treebf20b29b056c88853ec09cdeb27270ee6dda074a /src/modules/jack/module-jack-source.c
parent908b0e6738778d4e7244391bcccecb8a0db542aa (diff)
build-system: move x11 and jack modules into subdirectories
Diffstat (limited to 'src/modules/jack/module-jack-source.c')
-rw-r--r--src/modules/jack/module-jack-source.c447
1 files changed, 447 insertions, 0 deletions
diff --git a/src/modules/jack/module-jack-source.c b/src/modules/jack/module-jack-source.c
new file mode 100644
index 00000000..9a215c54
--- /dev/null
+++ b/src/modules/jack/module-jack-source.c
@@ -0,0 +1,447 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2006 Lennart Poettering
+
+ 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
+ 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 <stdlib.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+
+#include <jack/jack.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/source.h>
+#include <pulsecore/module.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/thread.h>
+#include <pulsecore/thread-mq.h>
+#include <pulsecore/rtpoll.h>
+#include <pulsecore/sample-util.h>
+
+#include "module-jack-source-symdef.h"
+
+/* See module-jack-sink for a few comments how this module basically
+ * works */
+
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION("JACK Source");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(TRUE);
+PA_MODULE_USAGE(
+ "source_name=<name of source> "
+ "server_name=<jack server name> "
+ "client_name=<jack client name> "
+ "channels=<number of channels> "
+ "connect=<connect ports?>"
+ "channel_map=<channel map>");
+
+#define DEFAULT_SOURCE_NAME "jack_in"
+
+struct userdata {
+ pa_core *core;
+ pa_module *module;
+ pa_source *source;
+
+ unsigned channels;
+
+ jack_port_t* port[PA_CHANNELS_MAX];
+ jack_client_t *client;
+
+ pa_thread_mq thread_mq;
+ pa_asyncmsgq *jack_msgq;
+ pa_rtpoll *rtpoll;
+ pa_rtpoll_item *rtpoll_item;
+
+ pa_thread *thread;
+
+ jack_nframes_t saved_frame_time;
+ pa_bool_t saved_frame_time_valid;
+};
+
+static const char* const valid_modargs[] = {
+ "source_name",
+ "server_name",
+ "client_name",
+ "channels",
+ "connect",
+ "channel_map",
+ NULL
+};
+
+enum {
+ SOURCE_MESSAGE_POST = PA_SOURCE_MESSAGE_MAX,
+ SOURCE_MESSAGE_ON_SHUTDOWN
+};
+
+static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
+ struct userdata *u = PA_SOURCE(o)->userdata;
+
+ switch (code) {
+
+ case SOURCE_MESSAGE_POST:
+
+ /* Handle the new block from the JACK thread */
+ pa_assert(chunk);
+ pa_assert(chunk->length > 0);
+
+ if (u->source->thread_info.state == PA_SOURCE_RUNNING)
+ pa_source_post(u->source, chunk);
+
+ u->saved_frame_time = (jack_nframes_t) offset;
+ u->saved_frame_time_valid = TRUE;
+
+ return 0;
+
+ case SOURCE_MESSAGE_ON_SHUTDOWN:
+ pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
+ return 0;
+
+ case PA_SOURCE_MESSAGE_GET_LATENCY: {
+ jack_nframes_t l, ft, d;
+ size_t n;
+
+ /* This is the "worst-case" latency */
+ l = jack_port_get_total_latency(u->client, u->port[0]);
+
+ if (u->saved_frame_time_valid) {
+ /* Adjust the worst case latency by the time that
+ * passed since we last handed data to JACK */
+
+ ft = jack_frame_time(u->client);
+ d = ft > u->saved_frame_time ? ft - u->saved_frame_time : 0;
+ l += d;
+ }
+
+ /* Convert it to usec */
+ n = l * pa_frame_size(&u->source->sample_spec);
+ *((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->source->sample_spec);
+
+ return 0;
+ }
+ }
+
+ return pa_source_process_msg(o, code, data, offset, chunk);
+}
+
+static int jack_process(jack_nframes_t nframes, void *arg) {
+ unsigned c;
+ struct userdata *u = arg;
+ const void *buffer[PA_CHANNELS_MAX];
+ void *p;
+ jack_nframes_t frame_time;
+ pa_memchunk chunk;
+
+ pa_assert(u);
+
+ for (c = 0; c < u->channels; c++)
+ pa_assert_se(buffer[c] = jack_port_get_buffer(u->port[c], nframes));
+
+ /* We interleave the data and pass it on to the other RT thread */
+
+ pa_memchunk_reset(&chunk);
+ chunk.length = nframes * pa_frame_size(&u->source->sample_spec);
+ chunk.memblock = pa_memblock_new(u->core->mempool, chunk.length);
+ p = pa_memblock_acquire(chunk.memblock);
+ pa_interleave(buffer, u->channels, p, sizeof(float), nframes);
+ pa_memblock_release(chunk.memblock);
+
+ frame_time = jack_frame_time(u->client);
+
+ pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->source), SOURCE_MESSAGE_POST, NULL, frame_time, &chunk, NULL);
+
+ pa_memblock_unref(chunk.memblock);
+
+ return 0;
+}
+
+static void thread_func(void *userdata) {
+ struct userdata *u = userdata;
+
+ pa_assert(u);
+
+ pa_log_debug("Thread starting up");
+
+ if (u->core->realtime_scheduling)
+ pa_make_realtime(u->core->realtime_priority);
+
+ pa_thread_mq_install(&u->thread_mq);
+ pa_rtpoll_install(u->rtpoll);
+
+ for (;;) {
+ int ret;
+
+ if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
+ goto fail;
+
+ if (ret == 0)
+ goto finish;
+ }
+
+fail:
+ /* If this was no regular exit from the loop we have to continue
+ * processing messages until we received PA_MESSAGE_SHUTDOWN */
+ pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
+ pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
+
+finish:
+ pa_log_debug("Thread shutting down");
+}
+
+static void jack_error_func(const char*t) {
+ char *s;
+
+ s = pa_xstrndup(t, strcspn(t, "\n\r"));
+ pa_log_warn("JACK error >%s<", s);
+ pa_xfree(s);
+}
+
+static void jack_init(void *arg) {
+ struct userdata *u = arg;
+
+ pa_log_info("JACK thread starting up.");
+
+ if (u->core->realtime_scheduling)
+ pa_make_realtime(u->core->realtime_priority+4);
+}
+
+static void jack_shutdown(void* arg) {
+ struct userdata *u = arg;
+
+ pa_log_info("JACK thread shutting down..");
+ pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->source), SOURCE_MESSAGE_ON_SHUTDOWN, NULL, 0, NULL, NULL);
+}
+
+int pa__init(pa_module*m) {
+ struct userdata *u = NULL;
+ pa_sample_spec ss;
+ pa_channel_map map;
+ pa_modargs *ma = NULL;
+ jack_status_t status;
+ const char *server_name, *client_name;
+ uint32_t channels = 0;
+ pa_bool_t do_connect = TRUE;
+ unsigned i;
+ const char **ports = NULL, **p;
+ pa_source_new_data data;
+
+ pa_assert(m);
+
+ jack_set_error_function(jack_error_func);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments.");
+ goto fail;
+ }
+
+ if (pa_modargs_get_value_boolean(ma, "connect", &do_connect) < 0) {
+ pa_log("Failed to parse connect= argument.");
+ goto fail;
+ }
+
+ server_name = pa_modargs_get_value(ma, "server_name", NULL);
+ client_name = pa_modargs_get_value(ma, "client_name", "PulseAudio JACK Source");
+
+ m->userdata = u = pa_xnew0(struct userdata, 1);
+ u->core = m->core;
+ u->module = m;
+ u->saved_frame_time_valid = FALSE;
+ u->rtpoll = pa_rtpoll_new();
+ pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
+
+ u->jack_msgq = pa_asyncmsgq_new(0);
+ u->rtpoll_item = pa_rtpoll_item_new_asyncmsgq_read(u->rtpoll, PA_RTPOLL_EARLY-1, u->jack_msgq);
+
+ if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) {
+ pa_log("jack_client_open() failed.");
+ goto fail;
+ }
+
+ ports = jack_get_ports(u->client, NULL, NULL, JackPortIsPhysical|JackPortIsOutput);
+
+ channels = 0;
+ for (p = ports; *p; p++)
+ channels++;
+
+ if (!channels)
+ channels = m->core->default_sample_spec.channels;
+
+ if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 ||
+ channels <= 0 ||
+ channels >= PA_CHANNELS_MAX) {
+ pa_log("failed to parse channels= argument.");
+ goto fail;
+ }
+
+ if (channels == m->core->default_channel_map.channels)
+ map = m->core->default_channel_map;
+ else
+ pa_channel_map_init_extend(&map, channels, PA_CHANNEL_MAP_ALSA);
+
+ if (pa_modargs_get_channel_map(ma, NULL, &map) < 0 || map.channels != channels) {
+ pa_log("failed to parse channel_map= argument.");
+ goto fail;
+ }
+
+ pa_log_info("Successfully connected as '%s'", jack_get_client_name(u->client));
+
+ u->channels = ss.channels = (uint8_t) channels;
+ ss.rate = jack_get_sample_rate(u->client);
+ ss.format = PA_SAMPLE_FLOAT32NE;
+
+ pa_assert(pa_sample_spec_valid(&ss));
+
+ for (i = 0; i < ss.channels; i++) {
+ if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(map.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput|JackPortIsTerminal, 0))) {
+ pa_log("jack_port_register() failed.");
+ goto fail;
+ }
+ }
+
+ pa_source_new_data_init(&data);
+ data.driver = __FILE__;
+ data.module = m;
+ pa_source_new_data_set_name(&data, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME));
+ pa_source_new_data_set_sample_spec(&data, &ss);
+ pa_source_new_data_set_channel_map(&data, &map);
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "jack");
+ if (server_name)
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, server_name);
+ pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Jack source (%s)", jack_get_client_name(u->client));
+ pa_proplist_sets(data.proplist, "jack.client_name", jack_get_client_name(u->client));
+
+ u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY);
+ pa_source_new_data_done(&data);
+
+ if (!u->source) {
+ pa_log("Failed to create source.");
+ goto fail;
+ }
+
+ u->source->parent.process_msg = source_process_msg;
+ u->source->userdata = u;
+
+ pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
+ pa_source_set_rtpoll(u->source, u->rtpoll);
+
+ jack_set_process_callback(u->client, jack_process, u);
+ jack_on_shutdown(u->client, jack_shutdown, u);
+ jack_set_thread_init_callback(u->client, jack_init, u);
+
+ if (!(u->thread = pa_thread_new(thread_func, u))) {
+ pa_log("Failed to create thread.");
+ goto fail;
+ }
+
+ if (jack_activate(u->client)) {
+ pa_log("jack_activate() failed");
+ goto fail;
+ }
+
+ if (do_connect) {
+ for (i = 0, p = ports; i < ss.channels; i++, p++) {
+
+ if (!*p) {
+ pa_log("Not enough physical output ports, leaving unconnected.");
+ break;
+ }
+
+ pa_log_info("Connecting %s to %s", jack_port_name(u->port[i]), *p);
+
+ if (jack_connect(u->client, *p, jack_port_name(u->port[i]))) {
+ pa_log("Failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p);
+ break;
+ }
+ }
+
+ }
+
+ pa_source_put(u->source);
+
+ free(ports);
+ pa_modargs_free(ma);
+
+ return 0;
+
+fail:
+ if (ma)
+ pa_modargs_free(ma);
+
+ free(ports);
+
+ pa__done(m);
+
+ return -1;
+}
+
+int pa__get_n_used(pa_module *m) {
+ struct userdata *u;
+
+ pa_assert(m);
+ pa_assert_se(u = m->userdata);
+
+ return pa_source_linked_by(u->source);
+}
+
+void pa__done(pa_module*m) {
+ struct userdata *u;
+ pa_assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->client)
+ jack_client_close(u->client);
+
+ if (u->source)
+ pa_source_unlink(u->source);
+
+ if (u->thread) {
+ pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
+ pa_thread_free(u->thread);
+ }
+
+ pa_thread_mq_done(&u->thread_mq);
+
+ if (u->source)
+ pa_source_unref(u->source);
+
+ if (u->rtpoll_item)
+ pa_rtpoll_item_free(u->rtpoll_item);
+
+ if (u->jack_msgq)
+ pa_asyncmsgq_unref(u->jack_msgq);
+
+ if (u->rtpoll)
+ pa_rtpoll_free(u->rtpoll);
+
+ pa_xfree(u);
+}