Home | History | Annotate | Download | only in videodecoder 
      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_MPEG2_H_
     18 #define VIDEO_DECODER_MPEG2_H_
     19 
     20 #include "VideoDecoderBase.h"
     21 
     22 #ifndef TIANMI_DEBUG
     23 #define TIANMI_DEBUG
     24 #endif
     25 
     26 
     27 class VideoDecoderMPEG2 : public VideoDecoderBase {
     28 public:
     29     VideoDecoderMPEG2(const char *mimeType);
     30     virtual ~VideoDecoderMPEG2();
     31 
     32     virtual Decode_Status start(VideoConfigBuffer *buffer);
     33     virtual void stop(void);
     34     virtual void flush(void);
     35     virtual Decode_Status decode(VideoDecodeBuffer *buffer);
     36 
     37 protected:
     38     virtual Decode_Status checkHardwareCapability();
     39 
     40 private:
     41     Decode_Status decodeFrame(VideoDecodeBuffer *buffer, vbp_data_mpeg2 *data);
     42     //Decode_Status beginDecodingFrame(vbp_data_mp42 *data);
     43     //Decode_Status continueDecodingFrame(vbp_data_mp42 *data);
     44     Decode_Status decodePicture(vbp_data_mpeg2 *data, int picIndex);
     45     Decode_Status decodeSlice(vbp_data_mpeg2 *data, int picIndex, int slcIndex);
     46     Decode_Status setReference(VAPictureParameterBufferMPEG2 *picParam);
     47     Decode_Status startVA(vbp_data_mpeg2 *data);
     48     void updateFormatInfo(vbp_data_mpeg2 *data);
     49     inline Decode_Status allocateVABufferIDs(int32_t number);
     50 
     51 private:
     52     enum {
     53         MPEG2_PICTURE_TYPE_I = 1,
     54         MPEG2_PICTURE_TYPE_P = 2,
     55         MPEG2_PICTURE_TYPE_B = 3
     56     };
     57 
     58     enum {
     59         MPEG2_PIC_STRUCT_TOP       = 1,
     60         MPEG2_PIC_STRUCT_BOTTOM    = 2,
     61         MPEG2_PIC_STRUCT_FRAME     = 3
     62     };
     63 
     64     enum {
     65         MPEG2_SURFACE_NUMBER = 10,
     66     };
     67 
     68     VABufferID *mBufferIDs;
     69     int32_t mNumBufferIDs;
     70 };
     71 
     72 #endif /* VIDEO_DECODER_MPEG2_H_ */
     73