/H264Dec/source/h264bsd_storage.h
C Header | 174 lines | 77 code | 33 blank | 64 comment | 0 complexity | f75acee8c6f1195087a7388688b61130 MD5 | raw file
Possible License(s): BSD-3-Clause
- /*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /*------------------------------------------------------------------------------
- Table of contents
- 1. Include headers
- 2. Module defines
- 3. Data types
- 4. Function prototypes
- ------------------------------------------------------------------------------*/
- #ifndef H264SWDEC_STORAGE_H
- #define H264SWDEC_STORAGE_H
- /*------------------------------------------------------------------------------
- 1. Include headers
- ------------------------------------------------------------------------------*/
- #include "basetype.h"
- #include "h264bsd_cfg.h"
- #include "h264bsd_seq_param_set.h"
- #include "h264bsd_pic_param_set.h"
- #include "h264bsd_macroblock_layer.h"
- #include "h264bsd_nal_unit.h"
- #include "h264bsd_slice_header.h"
- #include "h264bsd_seq_param_set.h"
- #include "h264bsd_dpb.h"
- #include "h264bsd_pic_order_cnt.h"
- /*------------------------------------------------------------------------------
- 2. Module defines
- ------------------------------------------------------------------------------*/
- /*------------------------------------------------------------------------------
- 3. Data types
- ------------------------------------------------------------------------------*/
- typedef struct
- {
- u32 sliceId;
- u32 numDecodedMbs;
- u32 lastMbAddr;
- } sliceStorage_t;
- /* structure to store parameters needed for access unit boundary checking */
- typedef struct
- {
- nalUnit_t nuPrev[1];
- u32 prevFrameNum;
- u32 prevIdrPicId;
- u32 prevPicOrderCntLsb;
- i32 prevDeltaPicOrderCntBottom;
- i32 prevDeltaPicOrderCnt[2];
- u32 firstCallFlag;
- } aubCheck_t;
- /* storage data structure, holds all data of a decoder instance */
- typedef struct
- {
- /* active paramet set ids and pointers */
- u32 oldSpsId;
- u32 activePpsId;
- u32 activeSpsId;
- picParamSet_t *activePps;
- seqParamSet_t *activeSps;
- seqParamSet_t *sps[MAX_NUM_SEQ_PARAM_SETS];
- picParamSet_t *pps[MAX_NUM_PIC_PARAM_SETS];
- /* current slice group map, recomputed for each slice */
- u32 *sliceGroupMap;
- u32 picSizeInMbs;
- /* this flag is set after all macroblocks of a picture successfully
- * decoded -> redundant slices not decoded */
- u32 skipRedundantSlices;
- u32 picStarted;
- /* flag to indicate if current access unit contains any valid slices */
- u32 validSliceInAccessUnit;
- /* store information needed for handling of slice decoding */
- sliceStorage_t slice[1];
- /* number of concealed macroblocks in the current image */
- u32 numConcealedMbs;
- /* picId given by application */
- u32 currentPicId;
- /* macroblock specific storages, size determined by image dimensions */
- mbStorage_t *mb;
- /* flag to store noOutputReordering flag set by the application */
- u32 noReordering;
- /* DPB */
- dpbStorage_t dpb[1];
- /* structure to store picture order count related information */
- pocStorage_t poc[1];
- /* access unit boundary checking related data */
- aubCheck_t aub[1];
- /* current processed image */
- image_t currImage[1];
- /* last valid NAL unit header is stored here */
- nalUnit_t prevNalUnit[1];
- /* slice header, second structure used as a temporary storage while
- * decoding slice header, first one stores last successfully decoded
- * slice header */
- sliceHeader_t sliceHeader[2];
- /* fields to store old stream buffer pointers, needed when only part of
- * a stream buffer is processed by h264bsdDecode function */
- u32 prevBufNotFinished;
- u8 *prevBufPointer;
- u32 prevBytesConsumed;
- strmData_t strm[1];
- /* macroblock layer structure, there is no need to store this but it
- * would have increased the stack size excessively and needed to be
- * allocated from head -> easiest to put it here */
- macroblockLayer_t *mbLayer;
- u32 pendingActivation; /* Activate parameter sets after returning
- HEADERS_RDY to the user */
- u32 intraConcealmentFlag; /* 0 gray picture for corrupted intra
- 1 previous frame used if available */
- } storage_t;
- /*------------------------------------------------------------------------------
- 4. Function prototypes
- ------------------------------------------------------------------------------*/
- void h264bsdInitStorage(storage_t *pStorage);
- void h264bsdResetStorage(storage_t *pStorage);
- u32 h264bsdIsStartOfPicture(storage_t *pStorage);
- u32 h264bsdIsEndOfPicture(storage_t *pStorage);
- u32 h264bsdStoreSeqParamSet(storage_t *pStorage, seqParamSet_t *pSeqParamSet);
- u32 h264bsdStorePicParamSet(storage_t *pStorage, picParamSet_t *pPicParamSet);
- u32 h264bsdActivateParamSets(storage_t *pStorage, u32 ppsId, u32 isIdr);
- void h264bsdComputeSliceGroupMap(storage_t *pStorage,
- u32 sliceGroupChangeCycle);
- u32 h264bsdCheckAccessUnitBoundary(
- strmData_t *strm,
- nalUnit_t *nuNext,
- storage_t *storage,
- u32 *accessUnitBoundaryFlag);
- u32 h264bsdValidParamSets(storage_t *pStorage);
- #endif /* #ifdef H264SWDEC_STORAGE_H */