diff options
Diffstat (limited to 'src/modules/module-jack-source.c')
-rw-r--r-- | src/modules/module-jack-source.c | 315 |
1 files changed, 167 insertions, 148 deletions
diff --git a/src/modules/module-jack-source.c b/src/modules/module-jack-source.c index 8ca24035..b62ebe7a 100644 --- a/src/modules/module-jack-source.c +++ b/src/modules/module-jack-source.c @@ -28,31 +28,34 @@ #include <stdlib.h> #include <sys/stat.h> #include <stdio.h> -#include <assert.h> #include <errno.h> #include <string.h> #include <fcntl.h> #include <unistd.h> #include <limits.h> -#include <pthread.h> #include <jack/jack.h> #include <pulse/xmalloc.h> #include <pulsecore/core-error.h> -#include <pulsecore/iochannel.h> #include <pulsecore/source.h> #include <pulsecore/module.h> #include <pulsecore/core-util.h> #include <pulsecore/modargs.h> #include <pulsecore/log.h> -#include <pulse/mainloop-api.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_DESCRIPTION("JACK Source") PA_MODULE_VERSION(PACKAGE_VERSION) PA_MODULE_USAGE( "source_name=<name of source> " @@ -67,7 +70,6 @@ PA_MODULE_USAGE( struct userdata { pa_core *core; pa_module *module; - pa_source *source; unsigned channels; @@ -75,19 +77,15 @@ struct userdata { jack_port_t* port[PA_CHANNELS_MAX]; jack_client_t *client; - pthread_mutex_t mutex; - pthread_cond_t cond; + pa_thread_mq thread_mq; + pa_asyncmsgq *jack_msgq; + pa_rtpoll *rtpoll; + pa_rtpoll_item *rtpoll_item; - void * buffer[PA_CHANNELS_MAX]; - jack_nframes_t frames_posted; - int quit_requested; + pa_thread *thread; - int pipe_fds[2]; - int pipe_fd_type; - pa_io_event *io_event; - - jack_nframes_t frames_in_buffer; - jack_nframes_t timestamp; + jack_nframes_t saved_frame_time; + pa_bool_t saved_frame_time_valid; }; static const char* const valid_modargs[] = { @@ -100,141 +98,150 @@ static const char* const valid_modargs[] = { 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); -} +enum { + SOURCE_MESSAGE_POST = PA_SOURCE_MESSAGE_MAX, + SOURCE_MESSAGE_ON_SHUTDOWN +}; -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; +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; - assert(m); - assert(flags == PA_IO_EVENT_INPUT); - assert(u); - assert(u->pipe_fds[0] == fd); + switch (code) { - pa_read(fd, &x, 1, &u->pipe_fd_type); + case SOURCE_MESSAGE_POST: - if (u->quit_requested) { - stop_source(u); - u->quit_requested = 0; - return; - } + /* Handle the new block from the JACK thread */ + pa_assert(chunk); + pa_assert(chunk->length > 0); - pthread_mutex_lock(&u->mutex); + if (u->source->thread_info.state == PA_SOURCE_RUNNING) + pa_source_post(u->source, chunk); - if (u->frames_posted > 0) { - unsigned fs; - jack_nframes_t frame_idx; - pa_memchunk chunk; + u->saved_frame_time = offset; + u->saved_frame_time_valid = TRUE; - fs = pa_frame_size(&u->source->sample_spec); + return 0; - chunk.memblock = pa_memblock_new(u->core->mempool, chunk.length = u->frames_posted * fs); - chunk.index = 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; - for (frame_idx = 0; frame_idx < u->frames_posted; frame_idx ++) { - unsigned c; + case PA_SOURCE_MESSAGE_GET_LATENCY: { + jack_nframes_t l, ft, d; + size_t n; - 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; + /* This is the "worst-case" latency */ + l = jack_port_get_total_latency(u->client, u->port[0]); - *d = *s; - } - } + if (u->saved_frame_time_valid) { + /* Adjust the worst case latency by the time that + * passed since we last handed data to JACK */ - pa_source_post(u->source, &chunk); - pa_memblock_unref(chunk.memblock); + ft = jack_frame_time(u->client); + d = ft > u->saved_frame_time ? ft - u->saved_frame_time : 0; + l += d; + } - u->frames_posted = 0; + /* 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); - pthread_cond_signal(&u->cond); + return 0; + } } - pthread_mutex_unlock(&u->mutex); -} - -static void request_post(struct userdata *u) { - char c = 'x'; - assert(u); - - assert(u->pipe_fds[1] >= 0); - pa_write(u->pipe_fds[1], &c, 1, &u->pipe_fd_type); -} - -static void jack_shutdown(void *arg) { - struct userdata *u = arg; - assert(u); - - u->quit_requested = 1; - request_post(u); + 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; - assert(u); - - if (jack_transport_query(u->client, NULL) == JackTransportRolling) { - unsigned c; + const void *buffer[PA_CHANNELS_MAX]; + void *p; + jack_nframes_t frame_time; + pa_memchunk chunk; - pthread_mutex_lock(&u->mutex); + pa_assert(u); - u->frames_posted = nframes; + for (c = 0; c < u->channels; c++) + pa_assert(buffer[c] = jack_port_get_buffer(u->port[c], nframes)); - for (c = 0; c < u->channels; c++) { - u->buffer[c] = jack_port_get_buffer(u->port[c], nframes); - assert(u->buffer[c]); - } + /* We interleave the data and pass it on to the other RT thread */ - request_post(u); + 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); - pthread_cond_wait(&u->cond, &u->mutex); + frame_time = jack_frame_time(u->client); - u->frames_in_buffer = nframes; - u->timestamp = jack_get_current_transport_frame(u->client); + pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->source), SOURCE_MESSAGE_POST, NULL, frame_time, &chunk, NULL); - pthread_mutex_unlock(&u->mutex); - } + pa_memblock_unref(chunk.memblock); return 0; } -static pa_usec_t source_get_latency_cb(pa_source *s) { - struct userdata *u; - jack_nframes_t n, l, d; +static void thread_func(void *userdata) { + struct userdata *u = userdata; + + pa_assert(u); - assert(s); - u = s->userdata; + pa_log_debug("Thread starting up"); - if (jack_transport_query(u->client, NULL) != JackTransportRolling) - return 0; + if (u->core->high_priority) + pa_make_realtime(); - n = jack_get_current_transport_frame(u->client); + pa_thread_mq_install(&u->thread_mq); + pa_rtpoll_install(u->rtpoll); - if (n < u->timestamp) - return 0; + for (;;) { + int ret; - d = n - u->timestamp; - l = jack_port_get_total_latency(u->client, u->port[0]); + if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) + goto fail; + + if (ret == 0) + goto finish; + } - return pa_bytes_to_usec((l + d) * pa_frame_size(&s->sample_spec), &s->sample_spec); +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) { - pa_log_warn("JACK error >%s<", 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->high_priority) + pa_make_realtime(); } -int pa__init(pa_core *c, pa_module*m) { +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; @@ -247,40 +254,35 @@ int pa__init(pa_core *c, pa_module*m) { const char **ports = NULL, **p; char *t; - assert(c); - assert(m); + 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."); + 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."); + 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"); + client_name = pa_modargs_get_value(ma, "client_name", "PulseAudio JACK Source"); u = pa_xnew0(struct userdata, 1); - m->userdata = u; - u->core = c; + u->core = m->core; u->module = m; - u->pipe_fds[0] = u->pipe_fds[1] = -1; - u->pipe_fd_type = 0; - - pthread_mutex_init(&u->mutex, NULL); - pthread_cond_init(&u->cond, NULL); + m->userdata = u; + u->saved_frame_time_valid = FALSE; - if (pipe(u->pipe_fds) < 0) { - pa_log("pipe() failed: %s", pa_cstrerror(errno)); - goto fail; - } + pa_thread_mq_init(&u->thread_mq, m->core->mainloop); + u->rtpoll = pa_rtpoll_new(); + pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq); - pa_make_nonblock_fd(u->pipe_fds[1]); + u->jack_msgq = pa_asyncmsgq_new(0); + u->rtpoll_item = pa_rtpoll_item_new_asyncmsgq(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."); @@ -294,7 +296,7 @@ int pa__init(pa_core *c, pa_module*m) { channels++; if (!channels) - channels = c->default_sample_spec.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."); @@ -302,7 +304,7 @@ int pa__init(pa_core *c, pa_module*m) { } pa_channel_map_init_auto(&map, channels, PA_CHANNEL_MAP_ALSA); - if (pa_modargs_get_channel_map(ma, &map) < 0 || map.channels != channels) { + if (pa_modargs_get_channel_map(ma, NULL, &map) < 0 || map.channels != channels) { pa_log("failed to parse channel_map= argument."); goto fail; } @@ -313,7 +315,7 @@ int pa__init(pa_core *c, pa_module*m) { ss.rate = jack_get_sample_rate(u->client); ss.format = PA_SAMPLE_FLOAT32NE; - assert(pa_sample_spec_valid(&ss)); + 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))) { @@ -322,19 +324,29 @@ int pa__init(pa_core *c, pa_module*m) { } } - if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map))) { + if (!(u->source = pa_source_new(m->core, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map))) { pa_log("failed to create source."); goto fail; } + u->source->parent.process_msg = source_process_msg; u->source->userdata = u; - pa_source_set_owner(u->source, m); + u->source->flags = PA_SOURCE_LATENCY; + + pa_source_set_module(u->source, m); + pa_source_set_asyncmsgq(u->source, u->thread_mq.inq); + pa_source_set_rtpoll(u->source, u->rtpoll); pa_source_set_description(u->source, t = pa_sprintf_malloc("Jack source (%s)", jack_get_client_name(u->client))); pa_xfree(t); - 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); + 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"); @@ -359,7 +371,7 @@ int pa__init(pa_core *c, pa_module*m) { } - u->io_event = c->mainloop->io_new(c->mainloop, u->pipe_fds[0], PA_IO_EVENT_INPUT, io_event_cb, u); + pa_source_put(u->source); free(ports); pa_modargs_free(ma); @@ -372,14 +384,14 @@ fail: free(ports); - pa__done(c, m); + pa__done(m); return -1; } -void pa__done(pa_core *c, pa_module*m) { +void pa__done(pa_module*m) { struct userdata *u; - assert(c && m); + pa_assert(m); if (!(u = m->userdata)) return; @@ -387,20 +399,27 @@ void pa__done(pa_core *c, pa_module*m) { if (u->client) jack_client_close(u->client); - if (u->io_event) - c->mainloop->io_free(u->io_event); + if (u->source) + pa_source_unlink(u->source); - if (u->source) { - pa_source_disconnect(u->source); - pa_source_unref(u->source); + if (u->thread) { + pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL); + pa_thread_free(u->thread); } - if (u->pipe_fds[0] >= 0) - close(u->pipe_fds[0]); - if (u->pipe_fds[1] >= 0) - close(u->pipe_fds[1]); + 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); - pthread_mutex_destroy(&u->mutex); - pthread_cond_destroy(&u->cond); pa_xfree(u); } |