Initial-checkin for ON2 Software AVC/H264 decoder

o when neon is present, the performance gain of On2 AVC software decoder
  over PV software decoder is more than 30%.

o In addition, it fixes some known PV software decoder issues like missing
  output frames

o allow both pv and on2 software avc to be available for easy comparision

o change output frames from 8 to 16

Change-Id: I567ad1842025ead7092f0c47e3513d6d9ca232dd

1 files changed, 105 insertions, 0 deletions

diff --git a/media/libstagefright/codecs/on2/h264dec/SoftAVC.h b/media/libstagefright/codecs/on2/h264dec/SoftAVC.h
new file mode 100644
index 0000000..a7340c0
--- /dev/null
+++ b/media/libstagefright/codecs/on2/h264dec/SoftAVC.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2011 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 SOFT_AVC_H_
+
+#define SOFT_AVC_H_
+
+#include "SimpleSoftOMXComponent.h"
+#include <utils/KeyedVector.h>
+
+#include "H264SwDecApi.h"
+#include "basetype.h"
+
+namespace android {
+
+struct SoftAVC : public SimpleSoftOMXComponent {
+    SoftAVC(const char *name,
+            const OMX_CALLBACKTYPE *callbacks,
+            OMX_PTR appData,
+            OMX_COMPONENTTYPE **component);
+
+protected:
+    virtual ~SoftAVC();
+
+    virtual OMX_ERRORTYPE internalGetParameter(
+            OMX_INDEXTYPE index, OMX_PTR params);
+
+    virtual OMX_ERRORTYPE internalSetParameter(
+            OMX_INDEXTYPE index, const OMX_PTR params);
+
+    virtual OMX_ERRORTYPE getConfig(OMX_INDEXTYPE index, OMX_PTR params);
+
+    virtual void onQueueFilled(OMX_U32 portIndex);
+    virtual void onPortFlushCompleted(OMX_U32 portIndex);
+    virtual void onPortEnableCompleted(OMX_U32 portIndex, bool enabled);
+
+private:
+    enum {
+        kInputPortIndex   = 0,
+        kOutputPortIndex  = 1,
+        kNumInputBuffers  = 8,
+        kNumOutputBuffers = 16,
+    };
+
+    enum EOSStatus {
+        INPUT_DATA_AVAILABLE,
+        INPUT_EOS_SEEN,
+        OUTPUT_FRAMES_FLUSHED,
+    };
+
+    void *mHandle;
+
+    size_t mInputBufferCount;
+
+    uint32_t mWidth, mHeight, mPictureSize;
+    uint32_t mCropLeft, mCropTop;
+
+    uint8_t *mFirstPicture;
+    int32_t mFirstPictureId;
+
+    int32_t mPicId;  // Which output picture is for which input buffer?
+
+    // OMX_BUFFERHEADERTYPE may be overkill, but it is convenient
+    // for tracking the following fields: nFlags, nTimeStamp, etc.
+    KeyedVector<int32_t, OMX_BUFFERHEADERTYPE *> mPicToHeaderMap;
+    bool mHeadersDecoded;
+
+    EOSStatus mEOSStatus;
+
+    enum OutputPortSettingChange {
+        NONE,
+        AWAITING_DISABLED,
+        AWAITING_ENABLED
+    };
+    OutputPortSettingChange mOutputPortSettingsChange;
+
+    void initPorts();
+    status_t initDecoder();
+    void updatePortDefinitions();
+    bool drainAllOutputBuffers();
+    void drainOneOutputBuffer(int32_t picId, uint8_t *data);
+    void saveFirstOutputBuffer(int32_t pidId, uint8_t *data);
+    bool handleCropRectEvent(const CropParams* crop);
+    bool handlePortSettingChangeEvent(const H264SwDecInfo *info);
+
+    DISALLOW_EVIL_CONSTRUCTORS(SoftAVC);
+};
+
+}  // namespace android
+
+#endif  // SOFT_AVC_H_
+