Skip to content


Subversion checkout URL

You can clone with
Download ZIP
Fetching contributors…
Cannot retrieve contributors at this time
89 lines (75 sloc) 3.09 KB
/* ------------------------------------------------------------------
* Copyright (C) 1998-2009 PacketVideo
* 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* express or implied.
* See the License for the specific language governing permissions
* and limitations under the License.
* -------------------------------------------------------------------
This file contains application function interfaces to the AVC decoder library
and necessary type defitionitions and enumerations.
Naming convention for variables:
lower_case_with_under_line is syntax element in subclause 7.2 and 7.3
noUnderLine or NoUnderLine is derived variables defined somewhere else in the draft
or introduced by this decoder library.
#ifndef _AVCDEC_INT_H_
#define _AVCDEC_INT_H_
#include "avcint_common.h"
#include "avcdec_api.h"
Bitstream structure contains bitstream related parameters such as the pointer
to the buffer, the current byte position and bit position.
typedef struct tagDecBitstream
uint8 *bitstreamBuffer; /* pointer to buffer memory */
int nal_size; /* size of the current NAL unit */
int data_end_pos; /* bitstreamBuffer size in bytes */
int read_pos; /* next position to read from bitstreamBuffer */
uint curr_word; /* byte-swapped (MSB left) current word read from buffer */
int bit_left; /* number of bit left in current_word */
uint next_word; /* in case for old data in previous buffer hasn't been flushed. */
int incnt; /* bit left in the prev_word */
int incnt_next;
int bitcnt;
void *userData;
} AVCDecBitstream;
This structure is the main object for AVC decoder library providing access to all
global variables. It is allocated at PVAVCInitDecoder and freed at PVAVCCleanUpDecoder.
typedef struct tagDecObject
AVCCommonObj *common;
AVCDecBitstream *bitstream; /* for current NAL */
/* sequence parameter set */
AVCSeqParamSet *seqParams[32]; /* Array of pointers, get allocated at arrival of new seq_id */
/* picture parameter set */
AVCPicParamSet *picParams[256]; /* Array of pointers to picture param set structures */
/* For internal operation, scratch memory for MV, prediction, transform, etc.*/
uint ref_idx_l0[4]; /* [mbPartIdx], te(v) */
uint ref_idx_l1[4];
/* function pointers */
AVCDec_Status(*residual_block)(struct tagDecObject*, int, int,
int *, int *, int *);
/* Application control data */
AVCHandle *avcHandle;
void (*AVC_DebugLog)(AVCLogType type, char *string1, char *string2);
uint debugEnable;
} AVCDecObject;
#endif /* _AVCDEC_INT_H_ */
Jump to Line
Something went wrong with that request. Please try again.