| /* INTEL CONFIDENTIAL |
| * Copyright (c) 2009-2011 Intel Corporation. All rights reserved. |
| * |
| * The source code contained or described herein and all documents |
| * related to the source code ("Material") are owned by Intel |
| * Corporation or its suppliers or licensors. Title to the |
| * Material remains with Intel Corporation or its suppliers and |
| * licensors. The Material contains trade secrets and proprietary |
| * and confidential information of Intel or its suppliers and |
| * licensors. The Material is protected by worldwide copyright and |
| * trade secret laws and treaty provisions. No part of the Material |
| * may be used, copied, reproduced, modified, published, uploaded, |
| * posted, transmitted, distributed, or disclosed in any way without |
| * Intel's prior express written permission. |
| * |
| * No license under any patent, copyright, trade secret or other |
| * intellectual property right is granted to or conferred upon you |
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| * implication, inducement, estoppel or otherwise. Any license |
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| * |
| */ |
| |
| #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_ */ |