AAudio: add IEC61937 support.
Add IEC61937 support. As IEC61937 is not supported by MMAP path,
whenever IEC61937 is requested, only try with legacy path.
Bug: 141583521
Test: manually
Change-Id: I62116b966d390fe80b9cba1a9df490fa23aa5326
diff --git a/media/libaaudio/include/aaudio/AAudio.h b/media/libaaudio/include/aaudio/AAudio.h
index 03930ac..400a81b 100644
--- a/media/libaaudio/include/aaudio/AAudio.h
+++ b/media/libaaudio/include/aaudio/AAudio.h
@@ -103,7 +103,23 @@
*
* Available since API level 31.
*/
- AAUDIO_FORMAT_PCM_I32
+ AAUDIO_FORMAT_PCM_I32,
+
+ /**
+ * This format is used for compressed audio wrapped in IEC61937 for HDMI
+ * or S/PDIF passthrough.
+ *
+ * Unlike PCM playback, the Android framework is not able to do format
+ * conversion for IEC61937. In that case, when IEC61937 is requested, sampling
+ * rate and channel count or channel mask must be specified. Otherwise, it may
+ * fail when opening the stream. Apps are able to get the correct configuration
+ * for the playback by calling
+ * <a href="/reference/android/media/AudioManager#getDevices(int)">
+ * AudioManager#getDevices(int)</a>.
+ *
+ * Available since API level 34.
+ */
+ AAUDIO_FORMAT_IEC61937
};
typedef int32_t aaudio_format_t;
diff --git a/media/libaaudio/src/core/AAudioStreamParameters.cpp b/media/libaaudio/src/core/AAudioStreamParameters.cpp
index 8b7b75e..e654cda 100644
--- a/media/libaaudio/src/core/AAudioStreamParameters.cpp
+++ b/media/libaaudio/src/core/AAudioStreamParameters.cpp
@@ -58,6 +58,7 @@
case AUDIO_FORMAT_PCM_32_BIT:
case AUDIO_FORMAT_PCM_FLOAT:
case AUDIO_FORMAT_PCM_24_BIT_PACKED:
+ case AUDIO_FORMAT_IEC61937:
break; // valid
default:
ALOGD("audioFormat not valid, audio_format_t = 0x%08x", format);
diff --git a/media/libaaudio/src/core/AudioGlobal.cpp b/media/libaaudio/src/core/AudioGlobal.cpp
index 0e5b8be..30f9677 100644
--- a/media/libaaudio/src/core/AudioGlobal.cpp
+++ b/media/libaaudio/src/core/AudioGlobal.cpp
@@ -82,6 +82,7 @@
AAUDIO_CASE_ENUM(AAUDIO_FORMAT_PCM_FLOAT);
AAUDIO_CASE_ENUM(AAUDIO_FORMAT_PCM_I24_PACKED);
AAUDIO_CASE_ENUM(AAUDIO_FORMAT_PCM_I32);
+ AAUDIO_CASE_ENUM(AAUDIO_FORMAT_IEC61937);
}
return "Unrecognized";
}
diff --git a/media/libaaudio/src/core/AudioStreamBuilder.cpp b/media/libaaudio/src/core/AudioStreamBuilder.cpp
index a100aa9..04b4325 100644
--- a/media/libaaudio/src/core/AudioStreamBuilder.cpp
+++ b/media/libaaudio/src/core/AudioStreamBuilder.cpp
@@ -192,6 +192,11 @@
allowMMap = false;
}
+ if (getFormat() == AUDIO_FORMAT_IEC61937) {
+ ALOGD("%s IEC61937 format is selected, do not allow MMAP in this case.", __func__);
+ allowMMap = false;
+ }
+
if (!allowMMap && !allowLegacy) {
ALOGE("%s() no backend available: neither MMAP nor legacy path are allowed", __func__);
return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
diff --git a/media/libaaudio/src/utility/AAudioUtilities.cpp b/media/libaaudio/src/utility/AAudioUtilities.cpp
index 872faca..a197ced 100644
--- a/media/libaaudio/src/utility/AAudioUtilities.cpp
+++ b/media/libaaudio/src/utility/AAudioUtilities.cpp
@@ -140,6 +140,9 @@
case AAUDIO_FORMAT_PCM_I32:
androidFormat = AUDIO_FORMAT_PCM_32_BIT;
break;
+ case AAUDIO_FORMAT_IEC61937:
+ androidFormat = AUDIO_FORMAT_IEC61937;
+ break;
default:
androidFormat = AUDIO_FORMAT_INVALID;
ALOGE("%s() 0x%08X unrecognized", __func__, aaudioFormat);
@@ -166,6 +169,9 @@
case AUDIO_FORMAT_PCM_32_BIT:
aaudioFormat = AAUDIO_FORMAT_PCM_I32;
break;
+ case AUDIO_FORMAT_IEC61937:
+ aaudioFormat = AAUDIO_FORMAT_IEC61937;
+ break;
default:
aaudioFormat = AAUDIO_FORMAT_INVALID;
ALOGE("%s() 0x%08X unrecognized", __func__, androidFormat);