Age | Commit message (Collapse) | Author |
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Use pcm_avail_update(), check avail for timestamp
coherence.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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pcm_get_htimestamp() will be rewritten. Place it after
pcm_avail_update(), which will be used in the rewrite.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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Instead of sending appl_ptr and avail_min to the kernel,
get them. This is the behavior of alsa-lib.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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When hardware pointer update is requested and status
structure is mmaped, call HWSYNC ioctl.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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Hardware pointer should not be updated in available
calculation.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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It's not necessary to send appl_ptr or avail_min to the
kernel here.
In prepare action, called later in pcm_open(), appl_ptr
becomes zero.
avail_min is already defined in software parameters.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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appl_ptr becomes zero in prepare action. avail_min is the
same as when it was set in software parameters.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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It is not needed.
As the pcm structure is opaque to user it can be safely
removed.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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Prepare is done in pcm_open().
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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Start is done by kernel when start_threshold or more frames
are requested.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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The state cannot be assumed as RUNNING after a write
because start_threshold may not have elapsed.
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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This eliminates the need for prepare in transfer functions
and pcm_start().
Signed-off-by: Ricardo Biehl Pasquali <pasqualirb@gmail.com>
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When pcm device is linked to other pcm device,
the start call may be triggered by other pcm device.
Handle this condition by checing pcm state before start call.
Signed-off-by: Miguel Gaio <mgaio35@gmail.com>
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It is valid to get null sync_ptr on dma mmap coherent architecture.
In this case pcm_sync_ptr() is a nop.
Signed-off-by: Miguel Gaio <mgaio35@gmail.com>
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Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
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As per comment, on success, pcm_writei returns the number of frames written.
Fix the case of pcm not running.
Signed-off-by: Miguel GAIO <mgaio35@gmail.com>
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The @return comment description incorrect.
Fix it.
Change-Id: I148a5ebf3e05eb4824beb4c8fa1032a38272d86d
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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ALSA controls support polling on the kcontrols, this is used in HD-A for
jack notifcation. In tinyalsa we can use this for notfication from sound
card for any events detected by DSP
Change-Id: I4193809bfcdb60f4dc11e1c2ad6a07b29cfa80e9
Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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The TLV byte controls expect a TLV header as well. Check for TLV
access and add TLV header size before invoking mixer API.
Change-Id: I12ba129e5bbc0676e80eb920e85b3683decfe0db
Signed-off-by: Pawse, GuruprasadX <guruprasadx.pawse@intel.com>
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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Tinyalsa doesn't expose an api to check TLV RW access
Add mixer_ctl_is_access_tlv_rw().
This api will get used by tinymix and audio HALs for checking TLV RW
access before managing the byte related mixer controls.
Change-Id: Ib5707fabf479de638e1c7abd4cd149e7637ff9c2
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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This function parses a PCM name similar to the ALSA library.
This is done so that the differences between alsa-lib and tinyalsa
are a little more transparent to the user.
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The link function is necessary for time sychronization between multiple PCMs.
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New controls could appear during runtime, for example if a
new firmware is downloaded to a DSP. Since ALSA drivers are
not supposed to delete or renumber existing controls we can
assume that any new controls will be after any controls we
already know about. We can use this to enable extending our
current list of controls, which is more efficient than
closing the mixer session and recreating it.
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
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pcm_readi and pcm_writei now use a frame count to specify the
buffer length instead of using a byte count.
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Added these functions to replace pcm_read and pcm_write, which don't return the number of frames actually transferred.
On GCC-like compilers, pcm_read and pcm_write have been marked as deprecated
On doxygen documentation, they have been marked as deprecated as well.
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Added functions:
- pcm_get_channels
- pcm_get_rate
- pcm_get_format
These were added since they're required for iterating samples and frames.
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This function is used to get the number of mixer controls by a given name.
It was added for use with mixer_get_ctl_by_name_and_index so that client code
can expect the last valid index to pass.
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This function was added to make available a mixer control accessor
in a function that does not modify its value.
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Functions changed are:
- mixer_get_name
- mixer_get_num_ctls
- mixer_ctl_get_id
- mixer_ctl_get_name
- mixer_ctl_get_type
- mixer_ctl_get_type_string
- mixer_ctl_get_num_values
- mixer_ctl_get_num_enums
- mixer_ctl_get_enum_string
- mixer_ctl_get_percent
- mixer_ctl_get_value
- mixer_ctl_get_array
- mixer_ctl_get_range_min
- mixer_ctl_get_range_max
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pcm_get_file_descriptor
pcm_get_error
pcm_get_buffer_size
pcm_frames_to_bytes
pcm_bytes_to_frames
pcm_get_subdevice
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Added const specifier to the struct pcm_config argument.
Changed the way default values of the config structure are set and accessed.
They're accessed through the pointer from the argument list and set through the pointer in the pcm structure.
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Functions changed are:
- pcm_params_get_mask
- pcm_params_get_min
- pcm_params_get_max
- param_get_mask
- param_get_min
- param_get_max
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