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_H_
18 #define VIDEO_DECODER_AVC_H_
19 
20 #include "VideoDecoderBase.h"
21 
22 
23 class VideoDecoderAVC : public VideoDecoderBase {
24 public:
25     VideoDecoderAVC(const char *mimeType);
26     virtual ~VideoDecoderAVC();
27 
28     virtual Decode_Status start(VideoConfigBuffer *buffer);
29     virtual void stop(void);
30     virtual void flush(void);
31     virtual Decode_Status decode(VideoDecodeBuffer *buffer);
32 
33 protected:
34     virtual Decode_Status decodeFrame(VideoDecodeBuffer *buffer, vbp_data_h264 *data);
35     virtual Decode_Status beginDecodingFrame(vbp_data_h264 *data);
36     virtual Decode_Status continueDecodingFrame(vbp_data_h264 *data);
37     virtual Decode_Status decodeSlice(vbp_data_h264 *data, uint32_t picIndex, uint32_t sliceIndex);
38     Decode_Status setReference(VASliceParameterBufferH264 *sliceParam);
39     Decode_Status updateDPB(VAPictureParameterBufferH264 *picParam);
40     Decode_Status updateReferenceFrames(vbp_picture_data_h264 *picData);
41     void removeReferenceFromDPB(VAPictureParameterBufferH264 *picParam);
42     int32_t getPOC(VAPictureH264 *pic); // Picture Order Count
43     inline VASurfaceID findSurface(VAPictureH264 *pic);
44     inline VideoSurfaceBuffer* findSurfaceBuffer(VAPictureH264 *pic);
45     inline VideoSurfaceBuffer* findRefSurfaceBuffer(VAPictureH264 *pic);
46     inline void invalidateDPB(int toggle);
47     inline void clearAsReference(int toggle);
48     Decode_Status startVA(vbp_data_h264 *data);
49     void updateFormatInfo(vbp_data_h264 *data);
50     Decode_Status handleNewSequence(vbp_data_h264 *data);
51     bool isNewFrame(vbp_data_h264 *data, bool equalPTS);
52     int32_t getDPBSize(vbp_data_h264 *data);
53     virtual Decode_Status checkHardwareCapability();
54 #ifdef USE_AVC_SHORT_FORMAT
55     virtual Decode_Status getCodecSpecificConfigs(VAProfile profile, VAConfigID*config);
56 #endif
57     bool isWiDiStatusChanged();
58 
59 private:
60     struct DecodedPictureBuffer {
61         VideoSurfaceBuffer *surfaceBuffer;
62         int32_t poc; // Picture Order Count
63     };
64 
65     enum {
66         AVC_EXTRA_SURFACE_NUMBER = 11,
67         // maximum DPB (Decoded Picture Buffer) size
68         MAX_REF_NUMBER = 16,
69         DPB_SIZE = 17,         // DPB_SIZE = MAX_REF_NUMBER + 1,
70         REF_LIST_SIZE = 32,
71     };
72 
73     // maintain 2 ping-pong decoded picture buffers
74     DecodedPictureBuffer mDPBs[2][DPB_SIZE];
75     uint8_t mToggleDPB; // 0 or 1
76     bool mErrorConcealment;
77     uint32_t mLastPictureFlags;
78     VideoExtensionBuffer mExtensionBuffer;
79     PackedFrameData mPackedFrame;
80 };
81 
82 
83 
84 #endif /* VIDEO_DECODER_AVC_H_ */
85