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      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_VP8_H_
     18 #define VIDEO_DECODER_VP8_H_
     19 
     20 #include "VideoDecoderBase.h"
     21 
     22 
     23 class VideoDecoderVP8 : public VideoDecoderBase {
     24 public:
     25     VideoDecoderVP8(const char *mimeType);
     26     virtual ~VideoDecoderVP8();
     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 checkHardwareCapability();
     35 
     36 private:
     37     Decode_Status decodeFrame(VideoDecodeBuffer* buffer, vbp_data_vp8 *data);
     38     Decode_Status decodePicture(vbp_data_vp8 *data, int32_t picIndex);
     39     Decode_Status setReference(VAPictureParameterBufferVP8 *picParam);
     40     Decode_Status startVA(vbp_data_vp8 *data);
     41     void updateReferenceFrames(vbp_data_vp8 *data);
     42     void refreshLastReference(vbp_data_vp8 *data);
     43     void refreshGoldenReference(vbp_data_vp8 *data);
     44     void refreshAltReference(vbp_data_vp8 *data);
     45     void updateFormatInfo(vbp_data_vp8 *data);
     46     void invalidateReferenceFrames(int toggle);
     47     void clearAsReference(int toggle, int ref_type);
     48 
     49 private:
     50     enum {
     51         VP8_SURFACE_NUMBER = 9,
     52         VP8_REF_SIZE = 3,
     53     };
     54 
     55     enum {
     56         VP8_KEY_FRAME = 0,
     57         VP8_INTER_FRAME,
     58         VP8_SKIPPED_FRAME,
     59     };
     60 
     61     enum {
     62         VP8_LAST_REF_PIC = 0,
     63         VP8_GOLDEN_REF_PIC,
     64         VP8_ALT_REF_PIC,
     65     };
     66 
     67     enum {
     68         BufferCopied_NoneToGolden   = 0,
     69         BufferCopied_LastToGolden   = 1,
     70         BufferCopied_AltRefToGolden = 2
     71     };
     72 
     73     enum {
     74         BufferCopied_NoneToAltRef   = 0,
     75         BufferCopied_LastToAltRef   = 1,
     76         BufferCopied_GoldenToAltRef = 2
     77     };
     78 
     79     struct ReferenceFrameBuffer {
     80         VideoSurfaceBuffer *surfaceBuffer;
     81         int32_t index;
     82     };
     83 
     84     //[2] : [0 for current each reference frame, 1 for the previous each reference frame]
     85     //[VP8_REF_SIZE] : [0 for last ref pic, 1 for golden ref pic, 2 for alt ref pic]
     86     ReferenceFrameBuffer mRFBs[2][VP8_REF_SIZE];
     87 };
     88 
     89 
     90 
     91 #endif /* VIDEO_DECODER_VP8_H_ */
     92