Add Hardware Offloaded provider parameters for LC3
Bug: 150670922
Tag: #feature
Test: vts-tradefed run vts -m VtsHalBluetoothAudioV2_1TargetTest
Change-Id: I362542eef2afccbcc4b2cffc214651b37a04dbf3
diff --git a/bluetooth/audio/2.1/types.hal b/bluetooth/audio/2.1/types.hal
index 5604c38..e0dcc02 100644
--- a/bluetooth/audio/2.1/types.hal
+++ b/bluetooth/audio/2.1/types.hal
@@ -16,13 +16,14 @@
package android.hardware.bluetooth.audio@2.1;
-import @2.0::PcmParameters;
-import @2.0::SessionType;
-import @2.0::SampleRate;
-import @2.0::ChannelMode;
import @2.0::BitsPerSample;
-import @2.0::CodecConfiguration;
+import @2.0::ChannelMode;
import @2.0::CodecCapabilities;
+import @2.0::CodecConfiguration;
+import @2.0::CodecType;
+import @2.0::PcmParameters;
+import @2.0::SampleRate;
+import @2.0::SessionType;
enum SessionType : @2.0::SessionType {
/** Used when encoded by Bluetooth Stack and streaming to LE Audio device */
@@ -35,6 +36,10 @@
LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH,
};
+enum CodecType : @2.0::CodecType {
+ LC3 = 0x20,
+};
+
enum SampleRate : @2.0::SampleRate {
RATE_8000 = 0x100,
RATE_32000 = 0x200,
@@ -49,14 +54,57 @@
uint32_t dataIntervalUs;
};
-/** Used to configure either a Hardware or Software Encoding session based on session type */
-safe_union AudioConfiguration {
- PcmParameters pcmConfig;
- CodecConfiguration codecConfig;
+enum Lc3FrameDuration : uint8_t {
+ DURATION_10000US = 0x00,
+ DURATION_7500US = 0x01,
+};
+
+/**
+ * Used for Hardware Encoding/Decoding LC3 codec parameters.
+ */
+struct Lc3Parameters {
+ /* PCM is Input for encoder, Output for decoder */
+ BitsPerSample pcmBitDepth;
+
+ /* codec-specific parameters */
+ SampleRate samplingFrequency;
+ Lc3FrameDuration frameDuration;
+ /* length in octets of a codec frame */
+ uint32_t octetsPerFrame;
+ /* Number of blocks of codec frames per single SDU (Service Data Unit) */
+ uint8_t blocksPerSdu;
+};
+
+/**
+ * Used to specify the capabilities of the LC3 codecs supported by Hardware Encoding.
+ */
+struct Lc3CodecCapabilities {
+ /* This is bitfield, if bit N is set, HW Offloader supports N+1 channels at the same time.
+ * Example: 0x27 = 0b00100111: One, two, three or six channels supported.*/
+ uint8_t supportedChannelCounts;
+ Lc3Parameters lc3Capabilities;
};
/** Used to specify the capabilities of the different session types */
safe_union AudioCapabilities {
PcmParameters pcmCapabilities;
CodecCapabilities codecCapabilities;
+ Lc3CodecCapabilities leAudioCapabilities;
};
+
+/**
+ * Used to configure a LC3 Hardware Encoding session.
+ */
+struct Lc3CodecConfiguration {
+ /* This is also bitfield, specifying how the channels are ordered in the outgoing media packet.
+ * Bit meaning is defined in Bluetooth Assigned Numbers. */
+ uint32_t audioChannelAllocation;
+ Lc3Parameters lc3Config;
+};
+
+/** Used to configure either a Hardware or Software Encoding session based on session type */
+safe_union AudioConfiguration {
+ PcmParameters pcmConfig;
+ CodecConfiguration codecConfig;
+ Lc3CodecConfiguration leAudioCodecConfig;
+};
\ No newline at end of file