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ac108_plugin version 1: only support channel=4

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This commit is contained in:
Baozhu Zuo 2017-09-18 09:40:50 +08:00
parent 45932231a7
commit 5baa9289cf
2 changed files with 10 additions and 4 deletions
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ac108_plugin/libasound_module_pcm_ac108.so
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14
ac108_plugin/pcm_ac108.c
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@ -267,7 +267,7 @@ static int ac108_hw_params(snd_pcm_ioplug_t *io) {
snd_pcm_uframes_t buffer_size;
int err;
if (!rec->hw_params) {
err = ac108_slave_hw_params_half(rec, io->rate*2,io->format);
err = ac108_slave_hw_params_half(rec, 2*io->rate,io->format);
if (err < 0) {
fprintf(stderr, "ac108_slave_hw_params_half error\n");
return err;
@ -363,6 +363,12 @@ static int ac108_set_hw_constraint(struct ac108_t *rec) {
};
unsigned int formats[] = { SND_PCM_FORMAT_S32,
SND_PCM_FORMAT_S16 };
unsigned int rates[] = {
8000,
16000,
48000
};
int err;
snd_pcm_uframes_t buffer_max;
unsigned int period_bytes, max_periods;
@ -377,9 +383,9 @@ static int ac108_set_hw_constraint(struct ac108_t *rec) {
if ((err = snd_pcm_ioplug_set_param_list(&rec->io, SND_PCM_IOPLUG_HW_FORMAT,
ARRAY_SIZE(formats), formats)) < 0 ||
(err = snd_pcm_ioplug_set_param_minmax(&rec->io, SND_PCM_IOPLUG_HW_CHANNELS,
1, 4)) < 0 ||
(err = snd_pcm_ioplug_set_param_minmax(&rec->io, SND_PCM_IOPLUG_HW_RATE,
8000, 96000)) < 0) return err;
4, 4)) < 0 ||
(err = snd_pcm_ioplug_set_param_list(&rec->io, SND_PCM_IOPLUG_HW_RATE,
ARRAY_SIZE(rates), rates)) < 0) return err;
err = snd_pcm_ioplug_set_param_minmax(&rec->io,
SND_PCM_IOPLUG_HW_BUFFER_BYTES,
1, 4 * 1024 * 1024);