/***
This file is part of PulseAudio.
-
+
+ Copyright 2004-2006 Lennart Poettering
+
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,
or (at your option) any later version.
-
+
PulseAudio 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 PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
#endif
#include <stdio.h>
-#include <assert.h>
#include <math.h>
#include <pulse/xmalloc.h>
#include <pulsecore/modargs.h>
#include <pulsecore/namereg.h>
#include <pulsecore/log.h>
+#include <pulsecore/core-util.h>
#include "module-sine-symdef.h"
NULL,
};
-static int sink_input_peek(pa_sink_input *i, pa_memchunk *chunk) {
+static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
struct userdata *u;
- assert(i && chunk && i->userdata);
+
+ pa_assert(i);
u = i->userdata;
+ pa_assert(u);
+ pa_assert(chunk);
chunk->memblock = pa_memblock_ref(u->memblock);
chunk->index = u->peek_index;
- chunk->length = u->memblock->length - u->peek_index;
+ chunk->length = pa_memblock_get_length(u->memblock) - u->peek_index;
+
return 0;
}
-static void sink_input_drop(pa_sink_input *i, const pa_memchunk *chunk, size_t length) {
+static void sink_input_drop_cb(pa_sink_input *i, size_t length) {
struct userdata *u;
- assert(i && chunk && length && i->userdata);
- u = i->userdata;
+ size_t l;
- assert(chunk->memblock == u->memblock && length <= u->memblock->length-u->peek_index);
+ pa_assert(i);
+ u = i->userdata;
+ pa_assert(u);
+ pa_assert(length > 0);
u->peek_index += length;
- if (u->peek_index >= u->memblock->length)
- u->peek_index = 0;
+ l = pa_memblock_get_length(u->memblock);
+
+ while (u->peek_index >= l)
+ u->peek_index -= l;
}
-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);
+
+ pa_assert(i);
u = i->userdata;
+ pa_assert(u);
- pa_sink_input_disconnect(u->sink_input);
+ pa_sink_input_unlink(u->sink_input);
pa_sink_input_unref(u->sink_input);
u->sink_input = NULL;
size_t i;
l /= sizeof(float);
-
+
for (i = 0; i < l; i++)
f[i] = (float) sin((double) i/l*M_PI*2*freq)/2;
}
-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))) {
- pa_log(__FILE__": Failed to parse module arguments");
+ pa_log("Failed to parse module arguments");
goto fail;
}
-
- m->userdata = u = pa_xmalloc(sizeof(struct userdata));
- u->core = c;
+
+ m->userdata = u = pa_xnew0(struct userdata, 1);
+ u->core = m->core;
u->module = m;
u->sink_input = NULL;
u->memblock = NULL;
+ u->peek_index = 0;
- sink_name = pa_modargs_get_value(ma, "sink", NULL);
-
- if (!(sink = pa_namereg_get(c, sink_name, PA_NAMEREG_SINK, 1))) {
- pa_log(__FILE__": No such sink.");
+ if (!(sink = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sink", NULL), PA_NAMEREG_SINK, 1))) {
+ pa_log("No such sink.");
goto fail;
}
frequency = 440;
if (pa_modargs_get_value_u32(ma, "frequency", &frequency) < 0 || frequency < 1 || frequency > ss.rate/2) {
- pa_log(__FILE__": Invalid frequency specification");
+ pa_log("Invalid frequency specification");
goto fail;
}
-
- u->memblock = pa_memblock_new(c->mempool, pa_bytes_per_second(&ss));
- calc_sine(u->memblock->data, u->memblock->length, frequency);
- snprintf(t, sizeof(t), "Sine Generator at %u Hz", frequency);
+ u->memblock = pa_memblock_new(m->core->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);
+
+ pa_snprintf(t, sizeof(t), "Sine Generator at %u Hz", frequency);
pa_sink_input_new_data_init(&data);
data.sink = sink;
pa_sink_input_new_data_set_sample_spec(&data, &ss);
data.module = m;
- if (!(u->sink_input = pa_sink_input_new(c, &data, 0)))
+ if (!(u->sink_input = pa_sink_input_new(m->core, &data, 0)))
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->peek = sink_input_peek_cb;
+ u->sink_input->drop = sink_input_drop_cb;
+ u->sink_input->kill = sink_input_kill_cb;
u->sink_input->userdata = u;
- u->peek_index = 0;
-
+ pa_sink_input_put(u->sink_input);
+
pa_modargs_free(ma);
return 0;
-
+
fail:
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);
+
pa_xfree(u);
}