Merge HUGE set of changes temporarily into a branch, to allow me to move them from one machine to another (lock-free and stuff)

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1469 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-06-11 12:08:37 +00:00
parent 6aeec56708
commit 00da37f2c4
72 changed files with 4389 additions and 1767 deletions

View file

@ -28,7 +28,6 @@
#include <stdlib.h>
#include <sys/stat.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
@ -38,6 +37,7 @@
#include <pulse/timeval.h>
#include <pulse/xmalloc.h>
#include <pulsecore/macro.h>
#include <pulsecore/iochannel.h>
#include <pulsecore/sink.h>
#include <pulsecore/module.h>
@ -64,11 +64,9 @@ struct userdata {
pa_core *core;
pa_module *module;
pa_sink *sink;
pa_time_event *time_event;
pa_thread *thread;
size_t block_size;
uint64_t n_bytes;
struct timeval start_time;
struct timeval timestamp;
};
static const char* const valid_modargs[] = {
@ -81,35 +79,131 @@ static const char* const valid_modargs[] = {
NULL
};
static void time_callback(pa_mainloop_api *m, pa_time_event*e, const struct timeval *tv, void *userdata) {
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_memchunk chunk;
struct timeval ntv = *tv;
size_t l;
int quit = 0;
struct pollfd pollfd;
int running = 1;
assert(u);
pa_assert(u);
if (pa_sink_render(u->sink, u->block_size, &chunk) >= 0) {
l = chunk.length;
pa_memblock_unref(chunk.memblock);
} else
l = u->block_size;
pa_log_debug("Thread starting up");
pa_timeval_add(&ntv, pa_bytes_to_usec(l, &u->sink->sample_spec));
m->time_restart(e, &ntv);
memset(&pollfd, 0, sizeof(pollfd));
pollfd.fd = pa_asyncmsgq_get_fd(u->sink->asyncmsgq, PA_ASYNCQ_POP);
pollfd.events = POLLIN;
u->n_bytes += l;
}
pa_gettimeofday(u->timestamp);
for (;;) {
int code;
void *data, *object;
int r, timeout;
struct timeval now;
static pa_usec_t get_latency(pa_sink *s) {
struct userdata *u = s->userdata;
pa_usec_t a, b;
struct timeval now;
/* Check whether there is a message for us to process */
if (pa_asyncmsgq_get(u->sink->asyncmsgq, &object, &code, &data) == 0) {
a = pa_timeval_diff(pa_gettimeofday(&now), &u->start_time);
b = pa_bytes_to_usec(u->n_bytes, &s->sample_spec);
return b > a ? b - a : 0;
/* Now process these messages our own way */
if (!object) {
switch (code) {
case PA_MESSAGE_SHUTDOWN:
goto finish;
default:
pa_sink_process_msg(u->sink->asyncmsgq, object, code, data);
}
} else if (object == u->sink) {
switch (code) {
case PA_SINK_MESSAGE_STOP:
pa_assert(running);
running = 0;
break;
case PA_SINK_MESSAGE_START:
pa_assert(!running);
running = 1;
pa_gettimeofday(u->timestamp);
break;
case PA_SINK_MESSAGE_GET_LATENCY:
if (pa_timeval_cmp(&u->timestamp, &now) > 0)
*((pa_usec_t*) data) = 0;
else
*((pa_usec_t*) data) = pa_timeval_diff(&u->timestamp, &now);
break;
/* ... */
default:
pa_sink_process_msg(u->sink->asyncmsgq, object, code, data);
}
}
pa_asyncmsgq_done(u->sink->asyncmsgq);
continue;
}
/* Render some data and drop it immediately */
if (running) {
pa_gettimeofday(&now);
if (pa_timeval_cmp(u->timestamp, &now) <= 0) {
pa_memchunk chunk;
size_t l;
if (pa_sink_render(u->sink, u->block_size, &chunk) >= 0) {
l = chunk.length;
pa_memblock_unref(chunk.memblock);
} else
l = u->block_size;
pa_timeval_add(&u->timestamp, pa_bytes_to_usec(l, &u->sink->sample_spec));
continue;
}
timeout = pa_timeval_diff(&u->timestamp, &now)/1000;
if (timeout < 1)
timeout = 1;
} else
timeout = -1;
/* Hmm, nothing to do. Let's sleep */
if (pa_asyncmsgq_before_poll(u->sink->asyncmsgq) < 0)
continue;
r = poll(&pollfd, 1, timeout);
pa_asyncmsgq_after_poll(u->sink->asyncmsgq);
if (r < 0) {
if (errno == EINTR)
continue;
pa_log("poll() failed: %s", pa_cstrerror(errno));
goto fail;
}
pa_assert(r == 0 || pollfd.revents == POLLIN);
}
fail:
/* We have to continue processing messages until we receive the
* SHUTDOWN message */
pa_asyncmsgq_post(u->core->asyncmsgq, u->core, PA_CORE_MESSAGE_UNLOAD_MODULE, pa_module_ref(u->module), NULL, pa_module_unref);
pa_asyncmsgq_wait_for(PA_MESSAGE_SHUTDOWN);
finish:
pa_log_debug("Thread shutting down");
}
int pa__init(pa_core *c, pa_module*m) {
@ -118,17 +212,17 @@ int pa__init(pa_core *c, pa_module*m) {
pa_channel_map map;
pa_modargs *ma = NULL;
assert(c);
assert(m);
pa_assert(c);
pa_assert(m);
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;
}
ss = c->default_sample_spec;
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
pa_log("invalid sample format specification or channel map.");
pa_log("Invalid sample format specification or channel map");
goto fail;
}
@ -138,22 +232,24 @@ int pa__init(pa_core *c, pa_module*m) {
m->userdata = u;
if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
pa_log("failed to create sink.");
pa_log("Failed to create sink.");
goto fail;
}
u->sink->get_latency = get_latency;
u->sink->userdata = u;
pa_sink_set_owner(u->sink, m);
pa_sink_set_description(u->sink, pa_modargs_get_value(ma, "description", "NULL sink"));
u->n_bytes = 0;
pa_gettimeofday(&u->start_time);
u->time_event = c->mainloop->time_new(c->mainloop, &u->start_time, time_callback, u);
u->block_size = pa_bytes_per_second(&ss) / 10;
u->block_size = pa_bytes_per_second(&ss) / 20; /* 50 ms */
if (u->block_size <= 0)
u->block_size = pa_frame_size(&ss);
if (!(u->thread = pa_thread_new(thread_func, u))) {
pa_log("Failed to create thread.");
goto fail;
}
pa_modargs_free(ma);
return 0;
@ -169,15 +265,21 @@ fail:
void pa__done(pa_core *c, pa_module*m) {
struct userdata *u;
assert(c && m);
pa_assert(c);
pa_assert(m);
if (!(u = m->userdata))
return;
pa_sink_disconnect(u->sink);
pa_sink_unref(u->sink);
u->core->mainloop->time_free(u->time_event);
if (u->thread) {
pa_asyncmsgq_send(u->sink->asyncmsgq, PA_SINK_MESSAGE_SHUTDOWN, NULL);
pa_thread_free(u->thread);
}
pa_sink_unref(u->sink);
pa_xfree(u);
}