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stream: add pw_stream_new_simple

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Make a new method that also makes a remote and connects to it
transparently. This saves some lines of code.
This commit is contained in:
Wim Taymans 2018-03-22 18:07:57 +01:00
parent f9ceedb714
commit 41a3a924ef
5 changed files with 205 additions and 270 deletions
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107
src/examples/audio-src.c
View file

@ -59,32 +59,25 @@ struct data {
struct pw_core *core;
struct pw_type *t;
struct pw_remote *remote;
struct spa_hook remote_listener;
struct pw_stream *stream;
struct spa_hook stream_listener;
struct spa_audio_info_raw format;
double accumulator;
};
static void fill_f32(struct data *d, void *dest, int avail)
{
float *dst = dest;
int n_samples = avail / (sizeof(float) * d->format.channels);
float *dst = dest, val;
int n_samples = avail / (sizeof(float) * DEFAULT_CHANNELS);
int i, c;
for (i = 0; i < n_samples; i++) {
float val;
d->accumulator += M_PI_M2 * 440 / d->format.rate;
d->accumulator += M_PI_M2 * 440 / DEFAULT_RATE;
if (d->accumulator >= M_PI_M2)
d->accumulator -= M_PI_M2;
val = sin(d->accumulator);
for (c = 0; c < d->format.channels; c++)
for (c = 0; c < DEFAULT_CHANNELS; c++)
*dst++ = val;
}
}
@ -100,7 +93,6 @@ static void on_process(void *userdata)
return;
buf = b->buffer;
if ((p = buf->datas[0].data) == NULL)
return;
@ -116,84 +108,47 @@ static const struct pw_stream_events stream_events = {
.process = on_process,
};
static void on_state_changed(void *_data, enum pw_remote_state old, enum pw_remote_state state, const char *error)
{
struct data *data = _data;
struct pw_remote *remote = data->remote;
switch (state) {
case PW_REMOTE_STATE_ERROR:
printf("remote error: %s\n", error);
pw_main_loop_quit(data->loop);
break;
case PW_REMOTE_STATE_CONNECTED:
{
const struct spa_pod *params[1];
uint8_t buffer[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
printf("remote state: \"%s\"\n",
pw_remote_state_as_string(state));
data->stream = pw_stream_new(remote, "audio-src", NULL);
params[0] = spa_pod_builder_object(&b,
data->t->param.idEnumFormat, data->t->spa_format,
"I", data->type.media_type.audio,
"I", data->type.media_subtype.raw,
":", data->type.format_audio.format, "I", data->type.audio_format.F32,
":", data->type.format_audio.channels, "i", DEFAULT_CHANNELS,
":", data->type.format_audio.rate, "i", DEFAULT_RATE);
data->format.channels = DEFAULT_CHANNELS;
data->format.rate = DEFAULT_RATE;
pw_stream_add_listener(data->stream,
&data->stream_listener,
&stream_events,
data);
pw_stream_connect(data->stream,
PW_DIRECTION_OUTPUT,
NULL,
PW_STREAM_FLAG_AUTOCONNECT |
PW_STREAM_FLAG_MAP_BUFFERS |
PW_STREAM_FLAG_RT_PROCESS,
params, 1);
break;
}
default:
printf("remote state: \"%s\"\n", pw_remote_state_as_string(state));
break;
}
}
static const struct pw_remote_events remote_events = {
PW_VERSION_REMOTE_EVENTS,
.state_changed = on_state_changed,
};
int main(int argc, char *argv[])
{
struct data data = { 0, };
const struct spa_pod *params[1];
uint8_t buffer[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
pw_init(&argc, &argv);
data.loop = pw_main_loop_new(NULL);
data.core = pw_core_new(pw_main_loop_get_loop(data.loop), NULL);
data.t = pw_core_get_type(data.core);
data.remote = pw_remote_new(data.core, NULL, 0);
data.stream = pw_stream_new_simple(
pw_main_loop_get_loop(data.loop),
"audio-src",
NULL,
&stream_events,
&data);
data.remote = pw_stream_get_remote(data.stream);
data.t = pw_core_get_type(pw_remote_get_core(data.remote));
init_type(&data.type, data.t->map);
pw_remote_add_listener(data.remote, &data.remote_listener, &remote_events, &data);
params[0] = spa_pod_builder_object(&b,
data.t->param.idEnumFormat, data.t->spa_format,
"I", data.type.media_type.audio,
"I", data.type.media_subtype.raw,
":", data.type.format_audio.format, "I", data.type.audio_format.F32,
":", data.type.format_audio.channels, "i", DEFAULT_CHANNELS,
":", data.type.format_audio.rate, "i", DEFAULT_RATE);
pw_remote_connect(data.remote);
pw_stream_connect(data.stream,
PW_DIRECTION_OUTPUT,
NULL,
PW_STREAM_FLAG_AUTOCONNECT |
PW_STREAM_FLAG_MAP_BUFFERS |
PW_STREAM_FLAG_RT_PROCESS,
params, 1);
pw_main_loop_run(data.loop);
pw_core_destroy(data.core);
pw_stream_destroy(data.stream);
pw_main_loop_destroy(data.loop);
return 0;