Add defines and support for audio offload
- Add non-blocking write support, set_callback() function
- Add pause, resume, flush, drain functions to audio output stream
- Add audio parameter defines for compressed audio metadata
- Extend audio_config_t to include an audio_offload_info_t field
- Add is_offload_supported() function to test whether there is
hardware decode support for a given compressed audio format
- Change audio_stream_frame_size() to handle offloaded streams.
For an offloaded stream the size is always counted in bytes
(frame size == 1) and the number of channels is irrelevant.
Change-Id: I5b82c3fdcfa1456502d0042888f166bf02d8d54b
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Eric Laurent <elaurent@google.com>
diff --git a/include/hardware/audio_policy.h b/include/hardware/audio_policy.h
index c635ebf..4e75e02 100644
--- a/include/hardware/audio_policy.h
+++ b/include/hardware/audio_policy.h
@@ -133,7 +133,8 @@
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask,
- audio_output_flags_t flags);
+ audio_output_flags_t flags,
+ const audio_offload_info_t *offloadInfo);
/* indicates to the audio policy manager that the output starts being used
* by corresponding stream. */
@@ -241,6 +242,10 @@
/* dump state */
int (*dump)(const struct audio_policy *pol, int fd);
+
+ /* check if offload is possible for given sample rate, bitrate, duration, ... */
+ bool (*is_offload_supported)(const struct audio_policy *pol,
+ const audio_offload_info_t *info);
};
/* audio hw module handle used by load_hw_module(), open_output_on_module()
@@ -390,7 +395,8 @@
audio_format_t *pFormat,
audio_channel_mask_t *pChannelMask,
uint32_t *pLatencyMs,
- audio_output_flags_t flags);
+ audio_output_flags_t flags,
+ const audio_offload_info_t *offloadInfo);
/* Opens an audio input on a particular HW module.
*