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Improve hw_params documentation

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Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Andrew Eikum 2012-01-19 12:36:39 +01:00 • committed by Takashi Iwai
parent 235aec0a75
commit 43956de710
2 changed files with 25 additions and 2 deletions
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10
src/pcm/pcm.c
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@ -809,7 +809,9 @@ int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
*
* The configuration is chosen fixing single parameters in this order:
* first access, first format, first subformat, min channels, min rate,
* min period time, max buffer size, min tick time
* min period time, max buffer size, min tick time. If no mutually
* compatible set of parameters can be chosen, a negative error code
* will be returned.
*
* After this call, #snd_pcm_prepare() is called automatically and
* the stream is brought to \c #SND_PCM_STATE_PREPARED state.
@ -817,6 +819,9 @@ int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
* The hardware parameters cannot be changed when the stream is
* running (active). The software parameters can be changed
* at any time.
*
* The configuration space will be updated to reflect the chosen
* parameters.
*/
int snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
{
@ -3183,6 +3188,9 @@ int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params)
* \brief Fill params with a full configuration space for a PCM
* \param pcm PCM handle
* \param params Configuration space
*
* The configuration space will be filled with all possible ranges
* for the PCM device.
*/
int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
{