From abea726d16eecbc0ecfb60c5e23958ed5275b779 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 18 Apr 2006 13:22:41 +0000 Subject: add a jack source module git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@738 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/modules/module-jack-source.c | 393 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 393 insertions(+) create mode 100644 src/modules/module-jack-source.c (limited to 'src') diff --git a/src/modules/module-jack-source.c b/src/modules/module-jack-source.c new file mode 100644 index 00000000..eef416f6 --- /dev/null +++ b/src/modules/module-jack-source.c @@ -0,0 +1,393 @@ +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser 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 Lesser 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 +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "module-jack-source-symdef.h" + +PA_MODULE_AUTHOR("Lennart Poettering") +PA_MODULE_DESCRIPTION("Jack Source") +PA_MODULE_VERSION(PACKAGE_VERSION) +PA_MODULE_USAGE( + "source_name= " + "server_name= " + "client_name= " + "channels= " + "connect=" +) + +#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; + + pthread_mutex_t mutex; + pthread_cond_t cond; + + void * buffer[PA_CHANNELS_MAX]; + jack_nframes_t frames_posted; + int quit_requested; + + int pipe_fds[2]; + pa_io_event *io_event; + + jack_nframes_t frames_in_buffer; + jack_nframes_t timestamp; +}; + +static const char* const valid_modargs[] = { + "source_name", + "server_name", + "client_name", + "channels", + "connect", + NULL +}; + +static void stop_source(struct userdata *u) { + assert (u); + + jack_client_close(u->client); + u->client = NULL; + u->core->mainloop->io_free(u->io_event); + u->io_event = NULL; + pa_source_disconnect(u->source); + pa_source_unref(u->source); + u->source = NULL; + pa_module_unload_request(u->module); +} + +static void io_event_cb(pa_mainloop_api *m, pa_io_event *e, int fd, pa_io_event_flags_t flags, void *userdata) { + struct userdata *u = userdata; + char x; + + assert(m); + assert(flags == PA_IO_EVENT_INPUT); + assert(u); + assert(u->pipe_fds[0] == fd); + + read(fd, &x, 1); + + if (u->quit_requested) { + stop_source(u); + u->quit_requested = 0; + return; + } + + pthread_mutex_lock(&u->mutex); + + if (u->frames_posted > 0) { + unsigned fs; + jack_nframes_t frame_idx; + pa_memchunk chunk; + + fs = pa_frame_size(&u->source->sample_spec); + + chunk.memblock = pa_memblock_new(chunk.length = u->frames_posted * fs, u->core->memblock_stat); + chunk.index = 0; + + for (frame_idx = 0; frame_idx < u->frames_posted; frame_idx ++) { + unsigned c; + + for (c = 0; c < u->channels; c++) { + float *s = ((float*) u->buffer[c]) + frame_idx; + float *d = ((float*) ((uint8_t*) chunk.memblock->data + chunk.index)) + (frame_idx * u->channels) + c; + + *d = *s; + } + } + + pa_source_post(u->source, &chunk); + pa_memblock_unref(chunk.memblock); + + u->frames_posted = 0; + + pthread_cond_signal(&u->cond); + } + + pthread_mutex_unlock(&u->mutex); +} + +static void request_post(struct userdata *u) { + char c = 'x'; + assert(u); + + assert(u->pipe_fds[1] >= 0); + write(u->pipe_fds[1], &c, 1); +} + +static void jack_shutdown(void *arg) { + struct userdata *u = arg; + assert(u); + + u->quit_requested = 1; + request_post(u); +} + +static int jack_process(jack_nframes_t nframes, void *arg) { + struct userdata *u = arg; + assert(u); + + if (jack_transport_query(u->client, NULL) == JackTransportRolling) { + unsigned c; + + pthread_mutex_lock(&u->mutex); + + u->frames_posted = nframes; + + for (c = 0; c < u->channels; c++) { + u->buffer[c] = jack_port_get_buffer(u->port[c], nframes); + assert(u->buffer[c]); + } + + request_post(u); + + pthread_cond_wait(&u->cond, &u->mutex); + + u->frames_in_buffer = nframes; + u->timestamp = jack_get_current_transport_frame(u->client); + + pthread_mutex_unlock(&u->mutex); + } + + return 0; +} + +static pa_usec_t source_get_latency_cb(pa_source *s) { + struct userdata *u; + jack_nframes_t n, l, d; + + assert(s); + u = s->userdata; + + if (jack_transport_query(u->client, NULL) != JackTransportRolling) + return 0; + + n = jack_get_current_transport_frame(u->client); + + if (n < u->timestamp) + return 0; + + d = n - u->timestamp; + l = jack_port_get_total_latency(u->client, u->port[0]); + + return pa_bytes_to_usec((l + d) * pa_frame_size(&s->sample_spec), &s->sample_spec); +} + +static void jack_error_func(const char*t) { + pa_log_warn(__FILE__": JACK error >%s<", t); +} + +int pa__init(pa_core *c, pa_module*m) { + struct userdata *u = NULL; + pa_sample_spec ss; + pa_channel_map cm; + pa_modargs *ma = NULL; + jack_status_t status; + const char *server_name, *client_name; + uint32_t channels = 0; + int connect = 1; + unsigned i; + const char **ports = NULL, **p; + + assert(c); + assert(m); + + jack_set_error_function(jack_error_func); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log(__FILE__": failed to parse module arguments."); + goto fail; + } + + if (pa_modargs_get_value_boolean(ma, "connect", &connect) < 0) { + pa_log(__FILE__": 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", "polypaudio"); + + u = pa_xnew0(struct userdata, 1); + m->userdata = u; + u->core = c; + u->module = m; + u->pipe_fds[0] = u->pipe_fds[1] = -1; + + pthread_mutex_init(&u->mutex, NULL); + pthread_cond_init(&u->cond, NULL); + + if (pipe(u->pipe_fds) < 0) { + pa_log(__FILE__": pipe() failed: %s", strerror(errno)); + goto fail; + } + + pa_make_nonblock_fd(u->pipe_fds[1]); + + if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) { + pa_log(__FILE__": 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 = c->default_sample_spec.channels; + + if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 || channels <= 0 || channels >= PA_CHANNELS_MAX) { + pa_log(__FILE__": failed to parse channels= argument."); + goto fail; + } + + pa_log_info(__FILE__": Successfully connected as '%s'", jack_get_client_name(u->client)); + + ss.channels = u->channels = channels; + ss.rate = jack_get_sample_rate(u->client); + ss.format = PA_SAMPLE_FLOAT32NE; + + assert(pa_sample_spec_valid(&ss)); + + pa_channel_map_init_auto(&cm, channels); + + for (i = 0; i < ss.channels; i++) { + if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(cm.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput|JackPortIsTerminal, 0))) { + pa_log(__FILE__": jack_port_register() failed."); + goto fail; + } + } + + if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &cm))) { + pa_log(__FILE__": failed to create source."); + goto fail; + } + + u->source->userdata = u; + pa_source_set_owner(u->source, m); + u->source->description = pa_sprintf_malloc("Jack source (%s)", jack_get_client_name(u->client)); + u->source->get_latency = source_get_latency_cb; + + jack_set_process_callback(u->client, jack_process, u); + jack_on_shutdown(u->client, jack_shutdown, u); + + if (jack_activate(u->client)) { + pa_log(__FILE__": jack_activate() failed"); + goto fail; + } + + if (connect) { + for (i = 0, p = ports; i < ss.channels; i++, p++) { + + if (!*p) { + pa_log(__FILE__": not enough physical output ports, leaving unconnected."); + break; + } + + pa_log_info(__FILE__": connecting %s to %s", jack_port_name(u->port[i]), *p); + + if (jack_connect(u->client, jack_port_name(u->port[i]), *p)) { + pa_log(__FILE__": failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p); + break; + } + } + + } + + u->io_event = c->mainloop->io_new(c->mainloop, u->pipe_fds[0], PA_IO_EVENT_INPUT, io_event_cb, u); + + free(ports); + pa_modargs_free(ma); + + return 0; + +fail: + if (ma) + pa_modargs_free(ma); + + free(ports); + + pa__done(c, m); + + return -1; +} + +void pa__done(pa_core *c, pa_module*m) { + struct userdata *u; + assert(c && m); + + if (!(u = m->userdata)) + return; + + if (u->client) + jack_client_close(u->client); + + if (u->io_event) + c->mainloop->io_free(u->io_event); + + if (u->source) { + pa_source_disconnect(u->source); + pa_source_unref(u->source); + } + + if (u->pipe_fds[0] >= 0) + close(u->pipe_fds[0]); + if (u->pipe_fds[1] >= 0) + close(u->pipe_fds[1]); + + pthread_mutex_destroy(&u->mutex); + pthread_cond_destroy(&u->cond); + pa_xfree(u); +} -- cgit