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https://github.com/alsa-project/alsa-utils
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90f5967178
Remove the call to snd_config_expand_custom() to expand the top-level input config. And replace it with calls to snd_config_evaluate_string() for each non-compound config while processing individual objects. This will allow retreving variable definitions from object attribute values and global definitions. Add a new field "current_obj_cfg" to hold the current object config being pre-processed. This will facilitate adding simple math expressions for computing attribute values for objects based on other attributes. For ex: we can set the expression for buffer size as follows: buffer_size "$[($in_channels * 48) * 4]" The buffer_size attribute value will be computed with the attribute value "in_channels" based on the expression above. So if $in_channels = 2, buffer_size will be evaluated to 384. Additionally this change also permits computing attribute values based on previously computed values. For example: buffer_size "$[($in_channels * 48) * 4]" dma_buffer_size "$[$buffer_size * 2]" dma_buffer_size will be computed as 768. Note that the order of definitions for buffer_size and dma_buffer_size matters because the evaluation for dma_buffer_size depends on the evaluation of buffer_size. In order to conform to this, the tplg_object_copy_and_add_param() is modified to add attribute configs from class config to an object using snd_config_before() instead of snd_config_add(). With this change, we no longer need to set the auto_attr_updater for buffer type widget objects. So remove it. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz> |
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| aplay.1 | ||
| aplay.c | ||
| formats.h | ||
| Makefile.am | ||