From f013e1afd1e68af5e3b868c26a653bbfb39538f8 Mon Sep 17 00:00:00 2001
From: The Android Open Source Project <initial-contribution@android.com>
Date: Wed, 17 Dec 2008 18:05:43 -0800
Subject: Code drop from //branches/cupcake/...@124589

---
 libs/audioflinger/A2dpAudioInterface.h | 107 +++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 libs/audioflinger/A2dpAudioInterface.h

(limited to 'libs/audioflinger/A2dpAudioInterface.h')

diff --git a/libs/audioflinger/A2dpAudioInterface.h b/libs/audioflinger/A2dpAudioInterface.h
new file mode 100644
index 0000000..03bf933
--- /dev/null
+++ b/libs/audioflinger/A2dpAudioInterface.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef A2DP_AUDIO_HARDWARE_H
+#define A2DP_AUDIO_HARDWARE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/threads.h>
+
+#include <hardware/AudioHardwareBase.h>
+
+
+namespace android {
+
+class A2dpAudioInterface : public AudioHardwareBase
+{
+    class A2dpAudioStreamOut;
+
+public:
+                        A2dpAudioInterface();
+    virtual             ~A2dpAudioInterface();
+    virtual status_t    initCheck();
+    virtual status_t    standby();
+
+    virtual status_t    setVoiceVolume(float volume);
+    virtual status_t    setMasterVolume(float volume);
+
+    // mic mute
+    virtual status_t    setMicMute(bool state);
+    virtual status_t    getMicMute(bool* state);
+
+    // Temporary interface, do not use
+    // TODO: Replace with a more generic key:value get/set mechanism
+    virtual status_t    setParameter(const char *key, const char *value);
+
+    // create I/O streams
+    virtual AudioStreamOut* openOutputStream(
+                                int format=0,
+                                int channelCount=0,
+                                uint32_t sampleRate=0,
+                                status_t *status=0);
+
+    virtual AudioStreamIn* openInputStream(
+                                int format,
+                                int channelCount,
+                                uint32_t sampleRate,
+                                status_t *status);
+
+protected:
+    virtual status_t    doRouting();
+    virtual status_t    dump(int fd, const Vector<String16>& args);
+
+private:
+    class A2dpAudioStreamOut : public AudioStreamOut {
+    public:
+                            A2dpAudioStreamOut();
+        virtual             ~A2dpAudioStreamOut();
+                status_t    set(int format,
+                                int channelCount,
+                                uint32_t sampleRate);
+        virtual uint32_t    sampleRate() const { return 44100; }
+        // must be 32-bit aligned - driver only seems to like 4800
+        virtual size_t      bufferSize() const { return 5120; }
+        virtual int         channelCount() const { return 2; }
+        virtual int         format() const { return AudioSystem::PCM_16_BIT; }
+        virtual uint32_t    latency() const { return 0; }
+        virtual status_t    setVolume(float volume) { return INVALID_OPERATION; }
+        virtual ssize_t     write(const void* buffer, size_t bytes);
+                status_t    standby();
+        virtual status_t    dump(int fd, const Vector<String16>& args);
+
+    private:
+                int         mFd;
+                int         mStartCount;
+                int         mRetryCount;
+                void*       mData;
+                bool        mInitialized;
+
+#define kBufferSize 50000
+                char                    mBuffer[kBufferSize];
+                int                     mBufferRemaining;
+    };
+
+    Mutex                   mLock;
+    A2dpAudioStreamOut*     mOutput;
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // A2DP_AUDIO_HARDWARE_H
-- 
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