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_MPEG4_H_ 18 #define VIDEO_DECODER_MPEG4_H_ 19 20 #include "VideoDecoderBase.h" 21 22 23 class VideoDecoderMPEG4 : public VideoDecoderBase { 24 public: 25 VideoDecoderMPEG4(const char *mimeType); 26 virtual ~VideoDecoderMPEG4(); 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_mp42 *data); 38 Decode_Status beginDecodingFrame(vbp_data_mp42 *data); 39 Decode_Status continueDecodingFrame(vbp_data_mp42 *data); 40 Decode_Status decodeSlice(vbp_data_mp42 *data, vbp_picture_data_mp42 *picData); 41 Decode_Status setReference(VAPictureParameterBufferMPEG4 *picParam); 42 Decode_Status startVA(vbp_data_mp42 *data); 43 void updateFormatInfo(vbp_data_mp42 *data); 44 45 private: 46 // Value of VOP type defined here follows MP4 spec 47 enum { 48 MP4_VOP_TYPE_I = 0, 49 MP4_VOP_TYPE_P = 1, 50 MP4_VOP_TYPE_B = 2, 51 MP4_VOP_TYPE_S = 3, 52 }; 53 54 enum { 55 MP4_SURFACE_NUMBER = 10, 56 }; 57 58 uint64_t mLastVOPTimeIncrement; 59 bool mExpectingNVOP; // indicate if future n-vop is a placeholder of a packed frame 60 bool mSendIQMatrixBuf; // indicate if iq_matrix_buffer is sent to driver 61 int32_t mLastVOPCodingType; 62 bool mIsSyncFrame; // indicate if it is SyncFrame in container 63 bool mIsShortHeader; // indicate if it is short header format 64 VideoExtensionBuffer mExtensionBuffer; 65 PackedFrameData mPackedFrame; 66 }; 67 68 69 70 #endif /* VIDEO_DECODER_MPEG4_H_ */ 71