mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-06 13:29:56 -05:00
Port JACK sink module over from old core
git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1944 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering
parent
402950429b
commit
468c13e672
1 changed files with 202 additions and 158 deletions
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@ -34,25 +34,39 @@
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#include <fcntl.h>
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#include <unistd.h>
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#include <limits.h>
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#include <pthread.h>
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#include <jack/jack.h>
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#include <pulse/xmalloc.h>
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#include <pulsecore/core-error.h>
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#include <pulsecore/iochannel.h>
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#include <pulsecore/sink.h>
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#include <pulsecore/module.h>
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#include <pulsecore/core-util.h>
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#include <pulsecore/modargs.h>
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#include <pulsecore/log.h>
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#include <pulse/mainloop-api.h>
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#include <pulsecore/thread.h>
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#include <pulsecore/thread-mq.h>
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#include <pulsecore/rtpoll.h>
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#include <pulsecore/sample-util.h>
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#include "module-jack-sink-symdef.h"
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/* General overview:
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*
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* Because JACK has a very unflexible event loop management, which
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* doesn't allow us to add our own event sources to the event thread
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* we cannot use the JACK real-time thread for dispatching our PA
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* work. Instead, we run an additional RT thread which does most of
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* the PA handling, and have the JACK RT thread request data from it
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* via pa_asyncmsgq. The cost is an additional context switch which
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* should hopefully not be that expensive if RT scheduling is
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* enabled. A better fix would only be possible with additional event
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* source support in JACK.
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*/
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PA_MODULE_AUTHOR("Lennart Poettering")
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PA_MODULE_DESCRIPTION("Jack Sink")
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PA_MODULE_DESCRIPTION("JACK Sink")
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PA_MODULE_VERSION(PACKAGE_VERSION)
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PA_MODULE_USAGE(
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"sink_name=<name of sink> "
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@ -67,7 +81,6 @@ PA_MODULE_USAGE(
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struct userdata {
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pa_core *core;
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pa_module *module;
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pa_sink *sink;
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unsigned channels;
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@ -75,19 +88,18 @@ struct userdata {
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jack_port_t* port[PA_CHANNELS_MAX];
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jack_client_t *client;
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pthread_mutex_t mutex;
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pthread_cond_t cond;
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void *buffer[PA_CHANNELS_MAX];
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jack_nframes_t frames_requested;
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int quit_requested;
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int pipe_fd_type;
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int pipe_fds[2];
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pa_io_event *io_event;
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pa_thread_mq thread_mq;
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pa_asyncmsgq *jack_msgq;
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pa_rtpoll *rtpoll;
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pa_rtpoll_item *rtpoll_item;
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pa_thread *thread;
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jack_nframes_t frames_in_buffer;
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jack_nframes_t timestamp;
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jack_nframes_t saved_frame_time;
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pa_bool_t saved_frame_time_valid;
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};
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static const char* const valid_modargs[] = {
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@ -100,146 +112,160 @@ static const char* const valid_modargs[] = {
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NULL
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};
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static void stop_sink(struct userdata *u) {
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assert (u);
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enum {
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SINK_MESSAGE_RENDER = PA_SINK_MESSAGE_MAX,
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SINK_MESSAGE_ON_SHUTDOWN
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};
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jack_client_close(u->client);
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u->client = NULL;
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u->core->mainloop->io_free(u->io_event);
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u->io_event = NULL;
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pa_sink_disconnect(u->sink);
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pa_sink_unref(u->sink);
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u->sink = NULL;
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pa_module_unload_request(u->module);
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}
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static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *memchunk) {
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struct userdata *u = PA_SINK(o)->userdata;
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static void io_event_cb(pa_mainloop_api *m, pa_io_event *e, int fd, pa_io_event_flags_t flags, void *userdata) {
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struct userdata *u = userdata;
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char x;
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switch (code) {
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assert(m);
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assert(e);
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assert(flags == PA_IO_EVENT_INPUT);
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assert(u);
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assert(u->pipe_fds[0] == fd);
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case SINK_MESSAGE_RENDER:
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pa_read(fd, &x, 1, &u->pipe_fd_type);
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/* Handle the request from the JACK thread */
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if (u->quit_requested) {
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stop_sink(u);
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u->quit_requested = 0;
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return;
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}
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pthread_mutex_lock(&u->mutex);
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if (u->frames_requested > 0) {
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unsigned fs;
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jack_nframes_t frame_idx;
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if (u->sink->thread_info.state == PA_SINK_RUNNING) {
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pa_memchunk chunk;
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size_t nbytes;
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void *p;
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fs = pa_frame_size(&u->sink->sample_spec);
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pa_assert(offset > 0);
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nbytes = offset * pa_frame_size(&u->sink->sample_spec);
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pa_sink_render_full(u->sink, u->frames_requested * fs, &chunk);
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p = pa_memblock_acquire(chunk.memblock);
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for (frame_idx = 0; frame_idx < u->frames_requested; frame_idx ++) {
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unsigned c;
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for (c = 0; c < u->channels; c++) {
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float *s = ((float*) ((uint8_t*) p + chunk.index)) + (frame_idx * u->channels) + c;
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float *d = ((float*) u->buffer[c]) + frame_idx;
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*d = *s;
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}
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}
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pa_sink_render_full(u->sink, nbytes, &chunk);
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p = (uint8_t*) pa_memblock_acquire(chunk.memblock) + chunk.index;
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pa_deinterleave(p, u->buffer, u->channels, sizeof(float), offset);
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pa_memblock_release(chunk.memblock);
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pa_memblock_unref(chunk.memblock);
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} else {
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unsigned c;
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pa_sample_spec ss;
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u->frames_requested = 0;
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/* Humm, we're not RUNNING, hence let's write some silence */
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pthread_cond_signal(&u->cond);
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ss = u->sink->sample_spec;
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ss.channels = 1;
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for (c = 0; c < u->channels; c++)
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pa_silence_memory(u->buffer[c], offset * pa_sample_size(&ss), &ss);
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}
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pthread_mutex_unlock(&u->mutex);
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u->frames_in_buffer = offset;
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u->saved_frame_time = * (jack_nframes_t*) data;
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u->saved_frame_time_valid = TRUE;
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return 0;
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case SINK_MESSAGE_ON_SHUTDOWN:
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pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
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return 0;
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case PA_SINK_MESSAGE_GET_LATENCY: {
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jack_nframes_t l, ft, d;
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size_t n;
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/* This is the "worst-case" latency */
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l = jack_port_get_total_latency(u->client, u->port[0]) + u->frames_in_buffer;
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if (u->saved_frame_time_valid) {
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/* Adjust the worst case latency by the time that
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* passed since we last handed data to JACK */
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ft = jack_frame_time(u->client);
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d = ft > u->saved_frame_time ? ft - u->saved_frame_time : 0;
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l = l > d ? l - d : 0;
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}
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static void request_render(struct userdata *u) {
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char c = 'x';
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assert(u);
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/* Convert it to usec */
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n = l * pa_frame_size(&u->sink->sample_spec);
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*((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->sink->sample_spec);
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assert(u->pipe_fds[1] >= 0);
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pa_write(u->pipe_fds[1], &c, 1, &u->pipe_fd_type);
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return 0;
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}
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}
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static void jack_shutdown(void *arg) {
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struct userdata *u = arg;
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assert(u);
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u->quit_requested = 1;
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request_render(u);
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return pa_sink_process_msg(o, code, data, offset, memchunk);
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}
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static int jack_process(jack_nframes_t nframes, void *arg) {
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struct userdata *u = arg;
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assert(u);
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if (jack_transport_query(u->client, NULL) == JackTransportRolling) {
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unsigned c;
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jack_nframes_t frame_time;
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pa_assert(u);
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pthread_mutex_lock(&u->mutex);
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/* We just forward the request to our other RT thread */
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u->frames_requested = nframes;
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for (c = 0; c < u->channels; c++)
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pa_assert_se(u->buffer[c] = jack_port_get_buffer(u->port[c], nframes));
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for (c = 0; c < u->channels; c++) {
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u->buffer[c] = jack_port_get_buffer(u->port[c], nframes);
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assert(u->buffer[c]);
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}
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request_render(u);
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pthread_cond_wait(&u->cond, &u->mutex);
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u->frames_in_buffer = nframes;
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u->timestamp = jack_get_current_transport_frame(u->client);
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pthread_mutex_unlock(&u->mutex);
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}
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frame_time = jack_frame_time(u->client);
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pa_assert_se(pa_asyncmsgq_send(u->jack_msgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_RENDER, &frame_time, nframes, NULL) == 0);
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return 0;
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}
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static pa_usec_t sink_get_latency_cb(pa_sink *s) {
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struct userdata *u;
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jack_nframes_t n, l, d;
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static void thread_func(void *userdata) {
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struct userdata *u = userdata;
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assert(s);
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u = s->userdata;
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pa_assert(u);
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if (jack_transport_query(u->client, NULL) != JackTransportRolling)
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return 0;
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pa_log_debug("Thread starting up");
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n = jack_get_current_transport_frame(u->client);
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if (u->core->high_priority)
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pa_make_realtime();
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if (n < u->timestamp)
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return 0;
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pa_thread_mq_install(&u->thread_mq);
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pa_rtpoll_install(u->rtpoll);
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d = n - u->timestamp;
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l = jack_port_get_total_latency(u->client, u->port[0]) + u->frames_in_buffer;
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for (;;) {
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int ret;
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if (d >= l)
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return 0;
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if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
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goto fail;
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return pa_bytes_to_usec((l - d) * pa_frame_size(&s->sample_spec), &s->sample_spec);
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if (ret == 0)
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goto finish;
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}
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fail:
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/* If this was no regular exit from the loop we have to continue
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* processing messages until we received PA_MESSAGE_SHUTDOWN */
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pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
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pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
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finish:
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pa_log_debug("Thread shutting down");
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}
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static void jack_error_func(const char*t) {
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pa_log_warn("JACK error >%s<", t);
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char *s;
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s = pa_xstrndup(s, strcspn(s, "\n\r"));
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pa_log_warn("JACK error >%s<", s);
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pa_xfree(s);
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}
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int pa__init(pa_core *c, pa_module*m) {
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static void jack_init(void *arg) {
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struct userdata *u = arg;
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pa_log_info("JACK thread starting up.");
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if (u->core->high_priority)
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pa_make_realtime();
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}
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static void jack_shutdown(void* arg) {
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struct userdata *u = arg;
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pa_log_info("JACK thread shutting down..");
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pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ON_SHUTDOWN, NULL, 0, NULL, NULL);
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}
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int pa__init(pa_module*m) {
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struct userdata *u = NULL;
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pa_sample_spec ss;
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pa_channel_map map;
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@ -252,18 +278,17 @@ int pa__init(pa_core *c, pa_module*m) {
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const char **ports = NULL, **p;
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char *t;
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assert(c);
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assert(m);
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pa_assert(m);
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jack_set_error_function(jack_error_func);
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
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pa_log("failed to parse module arguments.");
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pa_log("Failed to parse module arguments.");
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goto fail;
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}
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if (pa_modargs_get_value_boolean(ma, "connect", &do_connect) < 0) {
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pa_log("failed to parse connect= argument.");
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pa_log("Failed to parse connect= argument.");
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goto fail;
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}
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@ -271,21 +296,23 @@ int pa__init(pa_core *c, pa_module*m) {
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client_name = pa_modargs_get_value(ma, "client_name", "PulseAudio");
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u = pa_xnew0(struct userdata, 1);
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m->userdata = u;
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u->core = c;
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u->core = m->core;
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u->module = m;
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u->pipe_fds[0] = u->pipe_fds[1] = -1;
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u->pipe_fd_type = 0;
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m->userdata = u;
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u->saved_frame_time_valid = FALSE;
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pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
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u->rtpoll = pa_rtpoll_new();
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pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
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pthread_mutex_init(&u->mutex, NULL);
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pthread_cond_init(&u->cond, NULL);
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/* The queue linking the JACK thread and our RT thread */
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u->jack_msgq = pa_asyncmsgq_new(0);
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if (pipe(u->pipe_fds) < 0) {
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pa_log("pipe() failed: %s", pa_cstrerror(errno));
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goto fail;
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}
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pa_make_nonblock_fd(u->pipe_fds[1]);
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/* The msgq from the JACK RT thread should have an even higher
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* priority than the normal message queues, to match the guarantee
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* all other drivers make: supplying the audio device with data is
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* the top priority -- and as long as that is possible we don't do
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* anything else */
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u->rtpoll_item = pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY-1, u->jack_msgq);
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if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) {
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pa_log("jack_client_open() failed.");
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@ -299,16 +326,16 @@ int pa__init(pa_core *c, pa_module*m) {
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channels++;
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if (!channels)
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channels = c->default_sample_spec.channels;
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channels = m->core->default_sample_spec.channels;
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if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 || channels <= 0 || channels >= PA_CHANNELS_MAX) {
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pa_log("failed to parse channels= argument.");
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pa_log("Failed to parse channels= argument.");
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goto fail;
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}
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pa_channel_map_init_auto(&map, channels, PA_CHANNEL_MAP_ALSA);
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if (pa_modargs_get_channel_map(ma, &map) < 0 || map.channels != channels) {
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pa_log("failed to parse channel_map= argument.");
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if (pa_modargs_get_channel_map(ma, NULL, &map) < 0 || map.channels != channels) {
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pa_log("Failed to parse channel_map= argument.");
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goto fail;
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}
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@ -318,7 +345,7 @@ int pa__init(pa_core *c, pa_module*m) {
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ss.rate = jack_get_sample_rate(u->client);
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ss.format = PA_SAMPLE_FLOAT32NE;
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assert(pa_sample_spec_valid(&ss));
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pa_assert(pa_sample_spec_valid(&ss));
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for (i = 0; i < ss.channels; i++) {
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if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(map.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput|JackPortIsTerminal, 0))) {
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@ -327,19 +354,29 @@ int pa__init(pa_core *c, pa_module*m) {
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}
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}
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if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
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if (!(u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
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pa_log("failed to create sink.");
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goto fail;
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}
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u->sink->parent.process_msg = sink_process_msg;
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u->sink->userdata = u;
|
||||
pa_sink_set_owner(u->sink, m);
|
||||
u->sink->flags = PA_SINK_LATENCY;
|
||||
|
||||
pa_sink_set_module(u->sink, m);
|
||||
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
|
||||
pa_sink_set_rtpoll(u->sink, u->rtpoll);
|
||||
pa_sink_set_description(u->sink, t = pa_sprintf_malloc("Jack sink (%s)", jack_get_client_name(u->client)));
|
||||
pa_xfree(t);
|
||||
u->sink->get_latency = sink_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");
|
||||
|
|
@ -350,21 +387,20 @@ int pa__init(pa_core *c, pa_module*m) {
|
|||
for (i = 0, p = ports; i < ss.channels; i++, p++) {
|
||||
|
||||
if (!*p) {
|
||||
pa_log("not enough physical output ports, leaving unconnected.");
|
||||
pa_log("Not enough physical output ports, leaving unconnected.");
|
||||
break;
|
||||
}
|
||||
|
||||
pa_log_info("connecting %s to %s", jack_port_name(u->port[i]), *p);
|
||||
pa_log_info("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("failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p);
|
||||
pa_log("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);
|
||||
pa_sink_put(u->sink);
|
||||
|
||||
free(ports);
|
||||
pa_modargs_free(ma);
|
||||
|
|
@ -377,14 +413,15 @@ 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;
|
||||
|
|
@ -392,20 +429,27 @@ 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->sink)
|
||||
pa_sink_unlink(u->sink);
|
||||
|
||||
if (u->sink) {
|
||||
pa_sink_disconnect(u->sink);
|
||||
pa_sink_unref(u->sink);
|
||||
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->sink)
|
||||
pa_sink_unref(u->sink);
|
||||
|
||||
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);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue