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alsa: improve rate selection

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Make sure we don't select an invalid rate when the default is set or
when the card is already opened in some unsupported rate.

See #1975
This commit is contained in:
Wim Taymans 2022-01-05 11:53:47 +01:00
parent 8415fa525f
commit d8c867b515
1 changed files with 15 additions and 14 deletions
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29
spa/plugins/alsa/alsa-pcm.c
View file

@ -734,31 +734,32 @@ static int add_rate(struct state *state, uint32_t scale, bool all, uint32_t inde
CHECK(snd_pcm_hw_params_get_rate_min(params, &min, &dir), "get_rate_min");
CHECK(snd_pcm_hw_params_get_rate_max(params, &max, &dir), "get_rate_max");
rate = state->default_rate;
if (!state->multi_rate && state->card->format_ref > 0)
rate = state->card->rate;
else
rate = state->default_rate;
if (rate != 0 && !all) {
if (min < rate)
min = rate;
if (max > rate)
max = rate;
}
if (rate < min || rate > max)
rate = 0;
if (rate != 0 && !all)
min = max = rate;
if (rate == 0)
rate = state->position ? state->position->clock.rate.denom : DEFAULT_RATE;
rate = SPA_CLAMP(rate, min, max);
spa_pod_builder_prop(b, SPA_FORMAT_AUDIO_rate, 0);
spa_pod_builder_push_choice(b, &f[0], SPA_CHOICE_None, 0);
choice = (struct spa_pod_choice*)spa_pod_builder_frame(b, &f[0]);
if (rate == 0)
rate = state->position ? state->position->clock.rate.denom : DEFAULT_RATE;
if (state->n_allowed_rates > 0) {
uint32_t i, v, last = 0, count = 0;
v = SPA_CLAMP(rate, min, max);
if (uint32_array_contains(state->allowed_rates, state->n_allowed_rates, v)) {
spa_pod_builder_int(b, v * scale);
if (uint32_array_contains(state->allowed_rates, state->n_allowed_rates, rate)) {
spa_pod_builder_int(b, rate * scale);
count++;
}
for (i = 0; i < state->n_allowed_rates; i++) {
@ -775,7 +776,7 @@ static int add_rate(struct state *state, uint32_t scale, bool all, uint32_t inde
if (count > 1)
choice->body.type = SPA_CHOICE_Enum;
} else {
spa_pod_builder_int(b, SPA_CLAMP(rate, min, max) * scale);
spa_pod_builder_int(b, rate * scale);
if (min != max) {
spa_pod_builder_int(b, min * scale);