1 /*
2 * Copyright (c) 2009-2011 Intel Corporation.  All rights reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 
17 #ifndef VIDEO_DECODER_AVC_SECURE_H
18 #define VIDEO_DECODER_AVC_SECURE_H
19 
20 #include "VideoDecoderBase.h"
21 #include "VideoDecoderAVC.h"
22 #include "VideoDecoderDefs.h"
23 
24 class VideoDecoderAVCSecure : public VideoDecoderAVC {
25 public:
26     VideoDecoderAVCSecure(const char *mimeType);
27     virtual Decode_Status start(VideoConfigBuffer *buffer);
28     virtual void stop(void);
29 
30     // data in the decoded buffer is all encrypted.
31     virtual Decode_Status decode(VideoDecodeBuffer *buffer);
32 protected:
33     virtual Decode_Status decodeFrame(VideoDecodeBuffer *buffer, vbp_data_h264 *data);
34     virtual Decode_Status continueDecodingFrame(vbp_data_h264 *data);
35     virtual Decode_Status beginDecodingFrame(vbp_data_h264 *data);
36     virtual Decode_Status getCodecSpecificConfigs(VAProfile profile, VAConfigID*config);
37     Decode_Status parseClassicSliceHeader(VideoDecodeBuffer *buffer, vbp_data_h264 *data);
38     Decode_Status parseModularSliceHeader(VideoDecodeBuffer *buffer, vbp_data_h264 *data);
39 
40     Decode_Status updateSliceParameter(vbp_data_h264 *data, void *sliceheaderbuf);
41     virtual Decode_Status decodeSlice(vbp_data_h264 *data, uint32_t picIndex, uint32_t sliceIndex);
42 private:
43     Decode_Status processClassicInputBuffer(VideoDecodeBuffer *buffer, vbp_data_h264 **data);
44     Decode_Status processModularInputBuffer(VideoDecodeBuffer *buffer, vbp_data_h264 **data);
45     int32_t     mIsEncryptData;
46     int32_t     mFrameSize;
47     uint8_t*    mFrameData;
48     uint8_t*    mClearData;
49     uint8_t*    mCachedHeader;
50     int32_t     mFrameIdx;
51     int32_t     mModularMode;
52 
53     enum {
54         MAX_SLICE_HEADER_NUM  = 256,
55     };
56     int32_t     mSliceNum;
57     // Information of Slices in the Modular DRM Mode
58     struct SliceInfo {
59         uint8_t     sliceHeaderByte;             //  first byte of the slice header
60         uint32_t    sliceStartOffset;            // offset of Slice unit in the firewalled buffer
61         uint32_t    sliceByteOffset;             // extra offset from the blockAligned slice offset
62         uint32_t    sliceSize;                   // block aligned length of slice unit
63         uint32_t    sliceLength;                 // actual size of the slice
64     };
65 
66     SliceInfo mSliceInfo[MAX_SLICE_HEADER_NUM];
67 };
68 
69 #endif
70