Application of constraints to mask-type parameters for PCM substream is done in a call of snd_pcm_hw_refine(), while the function includes much codes and is not enough friendly to readers.
This commit splits the codes to a separated function so that readers can get it easily. I leave desicion into compilers to merge the function into its callee.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/core/pcm_native.c | 52 +++++++++++++++++++++++++++++++------------------ 1 file changed, 33 insertions(+), 19 deletions(-)
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 13dec5e..e5135e6 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -278,27 +278,12 @@ static const char * const snd_pcm_hw_param_names[] = { }; #endif
-int snd_pcm_hw_refine(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) +static int constrain_mask_params(struct snd_pcm_hw_constraints *constrs, + struct snd_pcm_hw_params *params) { + struct snd_mask *m; unsigned int k; - struct snd_pcm_hardware *hw; - struct snd_interval *i = NULL; - struct snd_mask *m = NULL; - struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; - unsigned int rstamps[constrs->rules_num]; - unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; - unsigned int stamp = 2; - int changed, again; - - params->info = 0; - params->fifo_size = 0; - if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) - params->msbits = 0; - if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { - params->rate_num = 0; - params->rate_den = 0; - } + int changed;
for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { m = hw_param_mask(params, k); @@ -320,6 +305,35 @@ int snd_pcm_hw_refine(struct snd_pcm_substream *substream, return changed; }
+ return 0; +} + +int snd_pcm_hw_refine(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + unsigned int k; + struct snd_pcm_hardware *hw; + struct snd_mask *m = NULL; + struct snd_interval *i = NULL; + struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; + unsigned int rstamps[constrs->rules_num]; + unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; + unsigned int stamp = 2; + int changed, again; + + params->info = 0; + params->fifo_size = 0; + if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) + params->msbits = 0; + if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { + params->rate_num = 0; + params->rate_den = 0; + } + + changed = constrain_mask_params(constrs, params); + if (changed < 0) + return changed; + for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { i = hw_param_interval(params, k); if (snd_interval_empty(i))