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Port sine modules to pa_memchunk_sine()

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This commit is contained in:
Lennart Poettering 2009-01-12 19:49:50 +01:00
parent b8e6aae08e
commit f67066b362
2 changed files with 25 additions and 59 deletions
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54
src/modules/module-sine.c
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@ -49,7 +49,7 @@ struct userdata {
pa_core *core;
pa_module *module;
pa_sink_input *sink_input;
pa_memblock *memblock;
pa_memchunk memchunk;
size_t peek_index;
};
@ -66,9 +66,11 @@ static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk
pa_assert_se(u = i->userdata);
pa_assert(chunk);
chunk->memblock = pa_memblock_ref(u->memblock);
chunk->length = pa_memblock_get_length(u->memblock) - u->peek_index;
chunk->index = u->peek_index;
*chunk = u->memchunk;
pa_memblock_ref(chunk->memblock);
chunk->index += u->peek_index;
chunk->length -= u->peek_index;
u->peek_index = 0;
@ -76,19 +78,17 @@ static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk
}
static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
size_t l;
struct userdata *u;
pa_sink_input_assert_ref(i);
pa_assert_se(u = i->userdata);
l = pa_memblock_get_length(u->memblock);
nbytes %= l;
nbytes %= u->memchunk.length;
if (u->peek_index >= nbytes)
u->peek_index -= nbytes;
else
u->peek_index = l + u->peek_index - nbytes;
u->peek_index = u->memchunk.length + u->peek_index - nbytes;
}
static void sink_input_kill_cb(pa_sink_input *i) {
@ -118,22 +118,12 @@ static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t s
pa_sink_input_request_rewind(i, 0, FALSE, TRUE);
}
static void calc_sine(float *f, size_t l, double freq) {
size_t i;
l /= sizeof(float);
for (i = 0; i < l; i++)
f[i] = (float) sin((double) i/(double)l*M_PI*2*freq)/2;
}
int pa__init(pa_module*m) {
pa_modargs *ma = NULL;
struct userdata *u;
pa_sink *sink;
pa_sample_spec ss;
uint32_t frequency;
void *p;
pa_sink_input_new_data data;
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
@ -141,14 +131,7 @@ int pa__init(pa_module*m) {
goto fail;
}
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;
if (!(sink = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sink", NULL), PA_NAMEREG_SINK, 1))) {
if (!(sink = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sink", NULL), PA_NAMEREG_SINK, TRUE))) {
pa_log("No such sink.");
goto fail;
}
@ -163,19 +146,22 @@ int pa__init(pa_module*m) {
goto fail;
}
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), (double) 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;
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.module = m;
data.sink = sink;
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);
data.module = m;
u->sink_input = pa_sink_input_new(m->core, &data, 0);
pa_sink_input_new_data_done(&data);
@ -215,8 +201,8 @@ void pa__done(pa_module*m) {
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);
}