-/* $Id$ */
-
/***
This file is part of PulseAudio.
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 of the License,
+ 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
#endif
#include <stdio.h>
-#include <assert.h>
-#include <math.h>
#include <pulse/xmalloc.h>
#include "module-sine-symdef.h"
-PA_MODULE_AUTHOR("Lennart Poettering")
-PA_MODULE_DESCRIPTION("Sine wave generator")
-PA_MODULE_USAGE("sink=<sink to connect to> frequency=<frequency in Hz>")
-PA_MODULE_VERSION(PACKAGE_VERSION)
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION("Sine wave generator");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(false);
+PA_MODULE_USAGE(
+ "sink=<sink to connect to> "
+ "frequency=<frequency in Hz>");
struct userdata {
pa_core *core;
pa_module *module;
pa_sink_input *sink_input;
- pa_memblock *memblock;
+ pa_memchunk memchunk;
size_t peek_index;
};
NULL,
};
-static int sink_input_peek(pa_sink_input *i, pa_memchunk *chunk) {
+static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
struct userdata *u;
- assert(i && chunk && i->userdata);
- u = i->userdata;
- chunk->memblock = pa_memblock_ref(u->memblock);
- chunk->index = u->peek_index;
- chunk->length = pa_memblock_get_length(u->memblock) - u->peek_index;
+ pa_sink_input_assert_ref(i);
+ pa_assert_se(u = i->userdata);
+ pa_assert(chunk);
+
+ *chunk = u->memchunk;
+ pa_memblock_ref(chunk->memblock);
+
+ chunk->index += u->peek_index;
+ chunk->length -= u->peek_index;
+
+ u->peek_index = 0;
+
return 0;
}
-static void sink_input_drop(pa_sink_input *i, const pa_memchunk *chunk, size_t length) {
+static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
struct userdata *u;
- assert(i && chunk && length && i->userdata);
- u = i->userdata;
- assert(chunk->memblock == u->memblock);
- assert(length <= pa_memblock_get_length(u->memblock)-u->peek_index);
+ pa_sink_input_assert_ref(i);
+ pa_assert_se(u = i->userdata);
- u->peek_index += length;
+ nbytes %= u->memchunk.length;
- if (u->peek_index >= pa_memblock_get_length(u->memblock))
- u->peek_index = 0;
+ if (u->peek_index >= nbytes)
+ u->peek_index -= nbytes;
+ else
+ u->peek_index = u->memchunk.length + u->peek_index - nbytes;
}
-static void sink_input_kill(pa_sink_input *i) {
+static void sink_input_kill_cb(pa_sink_input *i) {
struct userdata *u;
- assert(i && i->userdata);
- u = i->userdata;
- pa_sink_input_disconnect(u->sink_input);
+ pa_sink_input_assert_ref(i);
+ pa_assert_se(u = i->userdata);
+
+ pa_sink_input_unlink(u->sink_input);
pa_sink_input_unref(u->sink_input);
u->sink_input = NULL;
- pa_module_unload_request(u->module);
+ pa_module_unload_request(u->module, true);
}
-static void calc_sine(float *f, size_t l, float freq) {
- size_t i;
+/* Called from IO thread context */
+static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
+ struct userdata *u;
- l /= sizeof(float);
+ pa_sink_input_assert_ref(i);
+ pa_assert_se(u = i->userdata);
- for (i = 0; i < l; i++)
- f[i] = (float) sin((double) i/l*M_PI*2*freq)/2;
+ /* If we are added for the first time, ask for a rewinding so that
+ * we are heard right-away. */
+ if (PA_SINK_INPUT_IS_LINKED(state) &&
+ i->thread_info.state == PA_SINK_INPUT_INIT)
+ pa_sink_input_request_rewind(i, 0, false, true, true);
}
-int pa__init(pa_core *c, pa_module*m) {
+int pa__init(pa_module*m) {
pa_modargs *ma = NULL;
struct userdata *u;
pa_sink *sink;
- const char *sink_name;
pa_sample_spec ss;
uint32_t frequency;
- char t[256];
- void *p;
pa_sink_input_new_data data;
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
goto fail;
}
- m->userdata = u = pa_xmalloc(sizeof(struct userdata));
- u->core = c;
- u->module = m;
- u->sink_input = NULL;
- u->memblock = NULL;
-
- sink_name = pa_modargs_get_value(ma, "sink", NULL);
-
- if (!(sink = pa_namereg_get(c, sink_name, PA_NAMEREG_SINK, 1))) {
+ if (!(sink = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sink", NULL), PA_NAMEREG_SINK))) {
pa_log("No such sink.");
goto fail;
}
goto fail;
}
- u->memblock = pa_memblock_new(c->mempool, pa_bytes_per_second(&ss));
- p = pa_memblock_acquire(u->memblock);
- calc_sine(p, pa_memblock_get_length(u->memblock), frequency);
- pa_memblock_release(u->memblock);
+ m->userdata = u = pa_xnew0(struct userdata, 1);
+ u->core = m->core;
+ u->module = m;
+ u->sink_input = NULL;
- snprintf(t, sizeof(t), "Sine Generator at %u Hz", frequency);
+ u->peek_index = 0;
+ pa_memchunk_sine(&u->memchunk, m->core->mempool, ss.rate, frequency);
pa_sink_input_new_data_init(&data);
- data.sink = sink;
data.driver = __FILE__;
- data.name = t;
- pa_sink_input_new_data_set_sample_spec(&data, &ss);
data.module = m;
+ pa_sink_input_new_data_set_sink(&data, sink, false);
+ pa_proplist_setf(data.proplist, PA_PROP_MEDIA_NAME, "%u Hz Sine", frequency);
+ pa_proplist_sets(data.proplist, PA_PROP_MEDIA_ROLE, "abstract");
+ pa_proplist_setf(data.proplist, "sine.hz", "%u", frequency);
+ pa_sink_input_new_data_set_sample_spec(&data, &ss);
+
+ pa_sink_input_new(&u->sink_input, m->core, &data);
+ pa_sink_input_new_data_done(&data);
- if (!(u->sink_input = pa_sink_input_new(c, &data, 0)))
+ if (!u->sink_input)
goto fail;
- u->sink_input->peek = sink_input_peek;
- u->sink_input->drop = sink_input_drop;
- u->sink_input->kill = sink_input_kill;
+ u->sink_input->pop = sink_input_pop_cb;
+ u->sink_input->process_rewind = sink_input_process_rewind_cb;
+ u->sink_input->kill = sink_input_kill_cb;
+ u->sink_input->state_change = sink_input_state_change_cb;
u->sink_input->userdata = u;
- u->peek_index = 0;
+ pa_sink_input_put(u->sink_input);
pa_modargs_free(ma);
return 0;
if (ma)
pa_modargs_free(ma);
- pa__done(c, m);
+ pa__done(m);
return -1;
}
-void pa__done(pa_core *c, pa_module*m) {
- struct userdata *u = m->userdata;
- assert(c && m);
+void pa__done(pa_module*m) {
+ struct userdata *u;
+
+ pa_assert(m);
- if (!u)
+ if (!(u = m->userdata))
return;
if (u->sink_input) {
- pa_sink_input_disconnect(u->sink_input);
+ pa_sink_input_unlink(u->sink_input);
pa_sink_input_unref(u->sink_input);
}
- if (u->memblock)
- pa_memblock_unref(u->memblock);
+ if (u->memchunk.memblock)
+ pa_memblock_unref(u->memchunk.memblock);
+
pa_xfree(u);
}
-