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Modifications to audio_hal for Android@Home Tungsten.

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This is a squashed merge from master-tungsten of the following changes:

Commit f560da61a5e128ca9f82f7fe939afcf1f09188c7
Author: John Grossman <johngro@google.com>
Date:   Thu Aug 11 15:34:55 2011 -0700

    Fill out a missing entry in the audio HAL function table.

    The entry for get_initial_master_volume was missing from the non-legacy audio
    HAL and needs to be filled out.  Also fix up the order of the comments
    describing the get_initial_master_volume method.

    Change-Id: I87d5415ef92611497a6dab4c657fc00367c4d80b

commit cea82facb63fd237a4ea6fb770605fcb500850ff
Author: Jason Simmons <jsimmons@google.com>
Date:   Thu Jun 16 14:24:24 2011 -0700

    Define a replacement for getSampleDelta that returns a DMA start time and count of samples queued

    Change-Id: I2d13f57b5a8c5b97fb3aa0a90834ce91c56864ef

commit 60a9acd7eee470a8d870218e8be618bfa3be15a5
Author: Mike J. Chen <mjchen@google.com>
Date:   Tue Jun 7 09:13:23 2011 -0700

    Add Tungsten extensions to new Audio HAL interface.

    Change-Id: I3ea4676d4b7d2afd78a5a7a7003ad5c437276d05
    Signed-off-by: Mike J. Chen <mjchen@google.com>

Change-Id: I09f3756d12a1ce4f9af39610ed857890742a72df
Signed-off-by: Mike J. Chen <mjchen@google.com>
Signed-off-by: John Grossman <johngro@google.com>
This commit is contained in:
Mike J. Chen 2011-08-15 12:05:00 -07:00 committed by John Grossman
parent 643b5c6744
commit 619febb15c
2 changed files with 31 additions and 0 deletions
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17
include/hardware/audio.h
View file

@ -184,6 +184,14 @@ struct audio_stream_out {
*/
int (*get_render_position)(const struct audio_stream_out *stream,
uint32_t *dsp_frames);
/**
* get the local time at which the next write to the audio driver will be
* presented
*/
int (*get_next_write_timestamp)(const struct audio_stream_out *stream,
int64_t *timestamp);
};
typedef struct audio_stream_out audio_stream_out_t;
@ -271,6 +279,15 @@ struct audio_hw_device {
*/
int (*set_master_volume)(struct audio_hw_device *dev, float volume);
/**
* Get the current master volume value for the HAL, if the HAL supports
* master volume control. AudioFlinger will query this value from the
* primary audio HAL when the service starts and use the value for setting
* the initial master volume across all HALs. HALs which do not support
* this method should may leave it set to NULL.
*/
int (*get_master_volume)(struct audio_hw_device *dev, float *volume);
/**
* setMode is called when the audio mode changes. AUDIO_MODE_NORMAL mode
* is for standard audio playback, AUDIO_MODE_RINGTONE when a ringtone is

14
modules/audio/audio_hw.c
View file

@ -126,6 +126,12 @@ static int out_remove_audio_effect(const struct audio_stream *stream, effect_han
return 0;
}
static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
int64_t *timestamp)
{
return -EINVAL;
}
/** audio_stream_in implementation **/
static uint32_t in_get_sample_rate(const struct audio_stream *stream)
{
@ -236,6 +242,7 @@ static int adev_open_output_stream(struct audio_hw_device *dev,
out->stream.set_volume = out_set_volume;
out->stream.write = out_write;
out->stream.get_render_position = out_get_render_position;
out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
*stream_out = &out->stream;
return 0;
@ -278,6 +285,12 @@ static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
return -ENOSYS;
}
static int adev_get_master_volume(struct audio_hw_device *dev,
float *volume)
{
return -ENOSYS;
}
static int adev_set_mode(struct audio_hw_device *dev, int mode)
{
return 0;
@ -401,6 +414,7 @@ static int adev_open(const hw_module_t* module, const char* name,
adev->device.init_check = adev_init_check;
adev->device.set_voice_volume = adev_set_voice_volume;
adev->device.set_master_volume = adev_set_master_volume;
adev->device.get_master_volume = adev_get_master_volume;
adev->device.set_mode = adev_set_mode;
adev->device.set_mic_mute = adev_set_mic_mute;
adev->device.get_mic_mute = adev_get_mic_mute;