Move Codec2-related code from hardware/google/av
Test: None
Bug: 112362730
Change-Id: Ie2f8ff431d65c40333f267ab9877d47089adeea4
diff --git a/media/codec2/sfplugin/SkipCutBuffer.h b/media/codec2/sfplugin/SkipCutBuffer.h
new file mode 100644
index 0000000..0fb5690
--- /dev/null
+++ b/media/codec2/sfplugin/SkipCutBuffer.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2012 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 SKIP_CUT_BUFFER_H_
+
+#define SKIP_CUT_BUFFER_H_
+
+#include <media/MediaCodecBuffer.h>
+#include <media/stagefright/MediaBuffer.h>
+#include <media/stagefright/foundation/ABuffer.h>
+
+namespace android {
+
+/**
+ * utility class to cut the start and end off a stream of data in MediaBuffers
+ *
+ */
+class SkipCutBuffer: public RefBase {
+ public:
+ // 'skip' is the number of frames to skip from the beginning
+ // 'cut' is the number of frames to cut from the end
+ // 'num16BitChannels' is the number of channels, which are assumed to be 16 bit wide each
+ SkipCutBuffer(size_t skip, size_t cut, size_t num16Channels);
+
+ // Submit one MediaBuffer for skipping and cutting. This may consume all or
+ // some of the data in the buffer, or it may add data to it.
+ // After this, the caller should continue processing the buffer as usual.
+ void submit(MediaBuffer *buffer);
+ void submit(const sp<ABuffer>& buffer); // same as above, but with an ABuffer
+ void submit(const sp<MediaCodecBuffer>& buffer); // same as above, but with an ABuffer
+ void clear();
+ size_t size(); // how many bytes are currently stored in the buffer
+
+ protected:
+ virtual ~SkipCutBuffer();
+
+ private:
+ void write(const char *src, size_t num);
+ size_t read(char *dst, size_t num);
+ template <typename T>
+ void submitInternal(const sp<T>& buffer);
+ int32_t mSkip;
+ int32_t mFrontPadding;
+ int32_t mBackPadding;
+ int32_t mWriteHead;
+ int32_t mReadHead;
+ int32_t mCapacity;
+ char* mCutBuffer;
+ DISALLOW_EVIL_CONSTRUCTORS(SkipCutBuffer);
+};
+
+} // namespace android
+
+#endif // OMX_CODEC_H_