Add a reader and writer API around DataMQ

This allows producers and consumers to write
and read data directly to their buffers
(e.g. to a ring buffer that will be introduced
for the tinyalsa source).

Bug: 157158109
Test: atest VtsHalAudioV6_0TargetTest
Signed-off-by: Roman Kiryanov <rkir@google.com>
Change-Id: I3d94a7fca9905947b13e70b66e8b5ef134d82c16
Merged-In: I3d94a7fca9905947b13e70b66e8b5ef134d82c16

1 files changed, 4 insertions, 2 deletions

diff --git a/audio/device_port_source.h b/audio/device_port_source.h
index 3cc39ffe..16b5d27c 100644
--- a/audio/device_port_source.h
+++ b/audio/device_port_source.h
@@ -18,6 +18,7 @@
 #include <memory>
 #include <android/hardware/audio/common/6.0/types.h>
 #include <android/hardware/audio/6.0/types.h>
+#include "iwriter.h"
 
 namespace android {
 namespace hardware {
@@ -31,9 +32,10 @@ using namespace ::android::hardware::audio::V6_0;
 struct DevicePortSource {
     virtual ~DevicePortSource() {}
     virtual Result getCapturePosition(uint64_t &frames, uint64_t &time) = 0;
-    virtual int read(void *data, size_t nBytes) = 0;
+    virtual size_t read(float volume, size_t bytesToRead, IWriter &) = 0;
 
-    static std::unique_ptr<DevicePortSource> create(const DeviceAddress &,
+    static std::unique_ptr<DevicePortSource> create(size_t writerBufferSizeHint,
+                                                    const DeviceAddress &,
                                                     const AudioConfig &,
                                                     const hidl_bitfield<AudioOutputFlag> &,
                                                     uint64_t &frames);