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Runtime hw_info constraints support. New hw_info with lengths

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This commit is contained in:
Abramo Bagnara 2000-12-07 15:58:03 +00:00
parent b6134d77c1
commit 714ac32b5e
7 changed files with 190 additions and 271 deletions
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68
src/pcm/pcm_rate.c
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@ -236,9 +236,8 @@ static int snd_pcm_rate_close(snd_pcm_t *pcm)
static int snd_pcm_rate_hw_info(snd_pcm_t *pcm, snd_pcm_hw_info_t * info)
{
snd_pcm_rate_t *rate = pcm->private;
snd_pcm_hw_info_t sinfo;
unsigned int access_mask;
size_t size;
unsigned int access_mask, format_mask;
unsigned int rate_min, rate_max;
int err;
info->access_mask &= (SND_PCM_ACCBIT_MMAP_INTERLEAVED |
SND_PCM_ACCBIT_RW_INTERLEAVED |
@ -247,59 +246,36 @@ static int snd_pcm_rate_hw_info(snd_pcm_t *pcm, snd_pcm_hw_info_t * info)
access_mask = info->access_mask;
if (access_mask == 0)
return -EINVAL;
info->format_mask &= SND_PCM_FMTBIT_LINEAR;
if (info->format_mask == 0)
return -EINVAL;
info->subformat_mask &= SND_PCM_SUBFMTBIT_STD;
if (info->subformat_mask == 0)
format_mask = info->format_mask;
if (format_mask == 0)
return -EINVAL;
if (info->rate_min < RATE_MIN)
info->rate_min = RATE_MIN;
if (info->rate_max > RATE_MAX)
info->rate_max = RATE_MAX;
if (info->rate_max < info->rate_min)
rate_min = info->rate_min;
rate_max = info->rate_max;
if (rate_max < rate_min)
return -EINVAL;
sinfo = *info;
sinfo.access_mask = SND_PCM_ACCBIT_MMAP;
info->access_mask = SND_PCM_ACCBIT_MMAP;
if (rate->sformat >= 0)
sinfo.format_mask = 1U << rate->sformat;
sinfo.rate_min = rate->srate;
sinfo.rate_max = rate->srate;
sinfo.fragment_size_min = muldiv_down(info->fragment_size_min, sinfo.rate_min, info->rate_max);
sinfo.fragment_size_max = muldiv_up(info->fragment_size_max, sinfo.rate_max, info->rate_min);
sinfo.buffer_size_min = muldiv_down(info->buffer_size_min, sinfo.rate_min, info->rate_max);
sinfo.buffer_size_max = muldiv_up(info->buffer_size_max, sinfo.rate_max, info->rate_min);
info->format_mask = 1U << rate->sformat;
info->rate_min = rate->srate;
info->rate_max = rate->srate;
err = snd_pcm_hw_info(rate->plug.slave, &sinfo);
if (rate->sformat < 0)
info->format_mask = sinfo.format_mask;
info->channels_min = sinfo.channels_min;
info->channels_max = sinfo.channels_max;
info->fragments_min = sinfo.fragments_min;
info->fragments_max = sinfo.fragments_max;
err = snd_pcm_hw_info(rate->plug.slave, info);
if (rate->sformat >= 0)
info->format_mask = format_mask;
info->rate_min = rate_min;
info->rate_max = rate_max;
size = muldiv_down(sinfo.fragment_size_min, info->rate_min, sinfo.rate_max);
if (info->fragment_size_min < size)
info->fragment_size_min = size;
size = muldiv_up(sinfo.fragment_size_max, info->rate_max, sinfo.rate_min);
if (info->fragment_size_max > size)
info->fragment_size_max = size;
if (info->fragment_size_min > info->fragment_size_max)
return -EINVAL;
size = muldiv_down(sinfo.buffer_size_min, info->rate_min, sinfo.rate_max);
if (info->buffer_size_min < size)
info->buffer_size_min = size;
size = muldiv_up(sinfo.buffer_size_max, info->rate_max, sinfo.rate_min);
if (info->buffer_size_max > size)
info->buffer_size_max = size;
if (info->buffer_size_min > info->buffer_size_max)
return -EINVAL;
if (err < 0)
return err;
info->info = sinfo.info & ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
info->info &= ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
snd_pcm_hw_info_complete(info);
return 0;
}
@ -320,10 +296,6 @@ static int snd_pcm_rate_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
sinfo.access_mask = SND_PCM_ACCBIT_MMAP;
sinfo.rate_min = rate->srate;
sinfo.rate_max = rate->srate;
sinfo.fragment_size_min = muldiv_down(params->fragment_size, rate->srate, params->rate);
sinfo.fragment_size_max = muldiv_up(params->fragment_size, rate->srate, params->rate);
sinfo.buffer_size_min = muldiv_down(params->fragment_size * params->fragments, rate->srate, params->rate);
sinfo.buffer_size_max = muldiv_up(params->fragment_size * params->fragments, rate->srate, params->rate);
err = snd_pcm_hw_params_info(slave, &sparams, &sinfo);
params->fail_mask = sparams.fail_mask;
if (err < 0)