1 files changed, 75 insertions, 0 deletions
diff --git a/videodecoder/securevideo/merrplus/VideoDecoderAVCSecure.h b/videodecoder/securevideo/merrplus/VideoDecoderAVCSecure.h
new file mode 100644
index 0000000..ee16073
--- /dev/null
+++ b/videodecoder/securevideo/merrplus/VideoDecoderAVCSecure.h
@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 2009-2011 Intel Corporation.  All rights reserved.
+*
+* 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 VIDEO_DECODER_AVC_SECURE_H_
+#define VIDEO_DECODER_AVC_SECURE_H_
+
+#include "VideoDecoderAVC.h"
+
+
+class VideoDecoderAVCSecure : public VideoDecoderAVC {
+public:
+    VideoDecoderAVCSecure(const char *mimeType);
+    virtual ~VideoDecoderAVCSecure();
+
+    virtual Decode_Status start(VideoConfigBuffer *buffer);
+    virtual void stop(void);
+
+    // data in the decoded buffer is all encrypted.
+    virtual Decode_Status decode(VideoDecodeBuffer *buffer);
+
+private:
+    enum {
+        MAX_SLICE_HEADER_SIZE  = 30,
+        MAX_NALU_HEADER_BUFFER = 8192,
+        MAX_NALU_NUMBER = 400,  // > 4096/12
+    };
+
+    // Information of Network Abstraction Layer Unit
+    struct NaluInfo {
+        int32_t naluOffset;                        // offset of NAL unit in the firewalled buffer
+        int32_t naluLen;                           // length of NAL unit
+        int32_t naluHeaderLen;                     // length of NAL unit header
+    };
+
+    struct NaluMetadata {
+        NaluInfo *naluInfo;
+        int32_t naluNumber;  // number of NAL units
+    };
+
+    struct NaluByteStream {
+        int32_t naluOffset;
+        int32_t naluLen;
+        int32_t streamPos;
+        uint8_t *byteStream;   // 4 bytes of naluCount, 4 bytes of naluOffset, 4 bytes of naulLen, 4 bytes of naluHeaderLen, followed by naluHeaderData
+        int32_t naluCount;
+    };
+
+    virtual Decode_Status decodeSlice(vbp_data_h264 *data, uint32_t picIndex, uint32_t sliceIndex);
+    int32_t findNalUnitOffset(uint8_t *stream, int32_t offset, int32_t length);
+    Decode_Status copyNaluHeader(uint8_t *stream, NaluByteStream *naluStream);
+    Decode_Status parseAnnexBStream(uint8_t *stream, int32_t length, NaluByteStream *naluStream);
+
+private:
+    NaluMetadata mMetadata;
+    NaluByteStream mByteStream;
+    uint8_t *mNaluHeaderBuffer;
+    uint8_t *mInputBuffer;
+};
+
+
+
+#endif /* VIDEO_DECODER_AVC_SECURE_H_ */