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Improve async handling

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Don't use special callback in node to receive the results. Instead,
use a generic result callback to receive the result. This makes things
a bit more symetric and generic again because then you can choose how
to match the result to the request and you have a generic way to handle
both the sync and async case. We can then also remove the wait method.
This also makes the remote interface and spa interface to objects very
similar.

Make a helper object to receive and dispatch results. Use this in the
helper for enum_params.

Make device use the same result callbacks.
This commit is contained in:
Wim Taymans 2019-02-25 12:29:57 +01:00
parent 98463b689b
commit d2c18c7b1a
64 changed files with 1298 additions and 1141 deletions
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19
spa/plugins/alsa/alsa-utils.c
View file

@ -217,9 +217,8 @@ static void sanitize_map(snd_pcm_chmap_t* map)
}
int
spa_alsa_enum_format(struct state *state, uint32_t start, uint32_t num,
const struct spa_pod *filter,
spa_result_func_t func, void *data)
spa_alsa_enum_format(struct state *state, int seq, uint32_t start, uint32_t num,
const struct spa_pod *filter)
{
snd_pcm_t *hndl;
snd_pcm_hw_params_t *params;
@ -236,7 +235,7 @@ spa_alsa_enum_format(struct state *state, uint32_t start, uint32_t num,
int res;
bool opened;
struct spa_pod_frame f[2];
struct spa_result_node_enum_params result;
struct spa_result_node_params result;
uint32_t count = 0;
opened = state->opened;
@ -246,6 +245,8 @@ spa_alsa_enum_format(struct state *state, uint32_t start, uint32_t num,
result.next = start;
next:
result.index = result.next++;
spa_pod_builder_init(&b, buffer, sizeof(buffer));
hndl = state->hndl;
@ -316,11 +317,11 @@ spa_alsa_enum_format(struct state *state, uint32_t start, uint32_t num,
uint32_t channel;
snd_pcm_chmap_t* map;
if (maps[result.next] == NULL) {
if (maps[result.index] == NULL) {
snd_pcm_free_chmaps(maps);
goto enum_end;
}
map = &maps[result.next]->map;
map = &maps[result.index]->map;
spa_log_debug(state->log, "map %d channels", map->channels);
sanitize_map(map);
@ -338,7 +339,7 @@ spa_alsa_enum_format(struct state *state, uint32_t start, uint32_t num,
snd_pcm_free_chmaps(maps);
}
else {
if (result.next > 0)
if (result.index > 0)
goto enum_end;
spa_pod_builder_push_choice(&b, &f[1], SPA_CHOICE_None, 0);
@ -354,12 +355,10 @@ spa_alsa_enum_format(struct state *state, uint32_t start, uint32_t num,
fmt = spa_pod_builder_pop(&b, &f[0]);
result.next++;
if ((res = spa_pod_filter(&b, &result.param, fmt, filter)) < 0)
goto next;
if ((res = func(data, count, &result)) != 0)
if ((res = state->callbacks->result(state->callbacks_data, seq, 0, &result)) != 0)
goto exit;
if (++count != num)