Add audio policy API changes for audio offload

Changes to the API of audio policy for audio offload support:
- Add isOffloadSupported() function
- Add OUTPUT_FLAG_OFFLOAD
- Extend AudioOutputDescriptor to include a sharing count for direct outputs
- Pass audio_offload_info_t when opening output streams

Change-Id: I5ad26418fdb286eb7ae299d586dd1fd525d48ab9
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Eric Laurent <elaurent@google.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/audio/audio_policy_hal.cpp b/audio/audio_policy_hal.cpp
index 1604809..0e03358 100644
--- a/audio/audio_policy_hal.cpp
+++ b/audio/audio_policy_hal.cpp
@@ -138,14 +138,16 @@ static audio_io_handle_t ap_get_output(struct audio_policy *pol,
                                        uint32_t sampling_rate,
                                        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)
 {
     struct legacy_audio_policy *lap = to_lap(pol);
 
     ALOGV("%s: tid %d", __func__, gettid());
     return lap->apm->getOutput((AudioSystem::stream_type)stream,
                                sampling_rate, (int) format, channelMask,
-                               (AudioSystem::output_flags)flags);
+                               (AudioSystem::output_flags)flags,
+                               offloadInfo);
 }
 
 static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output,
@@ -321,6 +323,13 @@ static int ap_dump(const struct audio_policy *pol, int fd)
     return lap->apm->dump(fd);
 }
 
+static bool ap_is_offload_supported(const struct audio_policy *pol,
+                                    const audio_offload_info_t *info)
+{
+    const struct legacy_audio_policy *lap = to_clap(pol);
+    return lap->apm->isOffloadSupported(*info);
+}
+
 static int create_legacy_ap(const struct audio_policy_device *device,
                             struct audio_policy_service_ops *aps_ops,
                             void *service,
@@ -368,6 +377,7 @@ static int create_legacy_ap(const struct audio_policy_device *device,
     lap->policy.is_stream_active_remotely = ap_is_stream_active_remotely;
     lap->policy.is_source_active = ap_is_source_active;
     lap->policy.dump = ap_dump;
+    lap->policy.is_offload_supported = ap_is_offload_supported;
 
     lap->service = service;
     lap->aps_ops = aps_ops;