gdi_bytestream.h
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/*****************************************************************************
* Copyright Statement:
* --------------------
* This software is protected by Copyright and the information contained
* herein is confidential. The software may not be copied and the information
* contained herein may not be used or disclosed except with the written
* permission of MediaTek Inc. (C) 2005
*
* BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
* NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
* SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
* BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
* LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*
* THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
* WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
* LAWS PRINCIPLES. ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
* RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
* THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/
/*******************************************************************************
* Filename:
* ---------
* gdi_bytestream.h
*
* Project:
* --------
* MAUI
*
* Description:
* ------------
* GDI Bytesteam header.
*
* Author:
* -------
* -------
*
*==============================================================================
* HISTORY
* Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*------------------------------------------------------------------------------
* removed!
*
*------------------------------------------------------------------------------
* Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*==============================================================================
*******************************************************************************/
#ifndef _GDI_BYTESTREAM_H_
#define _GDI_BYTESTREAM_H_
#include "fs_type.h"
#include "MMIDataType.h"
#include "gdi_const.h"
#include "gdi_datatype.h"
#define BYTESTREAM_BUFFER_SIZE 512 /* size of file buffer cache */
extern GDI_RESULT gdi_bytestream_create(U8 *buf_ptr, U32 buf_size);
extern GDI_RESULT gdi_bytestream_create_file(const S8 *file_name);
extern GDI_RESULT gdi_bytestream_create_file_ext(
const S8 *file_name);
extern GDI_RESULT gdi_bytestream_free(void);
extern void gdi_bytestream_buffer_load_file(int at_least);
extern BOOL gdi_bytestream_buffer_load_file_widthout_exception(int at_least);
extern void gdi_bytestream_seek_file(S32 offset);
extern U8(*gdi_bytestream_get_byte) (void);
extern U8(*gdi_bytestream_peek_byte) (void);
extern U8(*gdi_bytestream_peek_byte_n) (int index);
extern U16(*gdi_bytestream_get_word) (void);
extern U32(*gdi_bytestream_get_3bytes) (void);
extern U32(*gdi_bytestream_get_dword) (void);
extern void (*gdi_bytestream_get_array) (U8 *array, U32 size);
extern void (*gdi_bytestream_flush) (U32 count);
extern void (*gdi_bytestream_seek) (S32 offset);
extern S32(*gdi_bytestream_tell) (void);
extern BOOL(*gdi_bytestream_is_eof) (void);
extern U32(*gdi_bytestream_get_size) (void);
extern FS_HANDLE gdi_bytestream_handle;
extern int gdi_bytestream_file_size;
extern int gdi_bytestream_buffer_content_size;
extern int gdi_bytestream_file_offset;
extern U8 *gdi_bytestream_buffer_reader;
extern U8 *gdi_bytestream_buffer_ptr;
extern U32 gdi_bytestream_buffer_ptr_size;
#define GDI_BYTESTREAM_PEEK_BYTE_FILE(X) \
{ \
if(!gdi_bytestream_buffer_content_size)\
gdi_bytestream_buffer_load_file(1); \
X = *gdi_bytestream_buffer_reader; \
}
#define GDI_BYTESTREAM_PEEK_BYTE_N_FILE(X,OFFSET) \
{ \
if(gdi_bytestream_buffer_content_size<OFFSET)\
gdi_bytestream_buffer_load_file(OFFSET); \
X = gdi_bytestream_buffer_reader[OFFSET]; \
}
#define GDI_BYTESTREAM_GET_BYTE_FILE(X) \
{ \
if(!(gdi_bytestream_buffer_content_size))\
gdi_bytestream_buffer_load_file(1); \
gdi_bytestream_buffer_content_size--; \
gdi_bytestream_file_offset++; \
X = *gdi_bytestream_buffer_reader++; \
} \
#define GDI_BYTESTREAM_GET_WORD_FILE(X) \
{ \
if(gdi_bytestream_buffer_content_size<2) \
gdi_bytestream_buffer_load_file(2); \
gdi_bytestream_buffer_content_size-=2; \
gdi_bytestream_file_offset+=2; \
X = *gdi_bytestream_buffer_reader++; \
X |= (*gdi_bytestream_buffer_reader++) << 8;\
} \
#define GDI_BYTESTREAM_GET_3BYTES_FILE(X) \
{ \
if(gdi_bytestream_buffer_content_size<3) \
gdi_bytestream_buffer_load_file(3); \
gdi_bytestream_buffer_content_size-=3; \
gdi_bytestream_file_offset+=3; \
X = *gdi_bytestream_buffer_reader++; \
X |= (*gdi_bytestream_buffer_reader++) << 8; \
X |= (*gdi_bytestream_buffer_reader++) << 16;\
} \
#define GDI_BYTESTREAM_GET_DWORD_FILE(X) \
{ \
if(gdi_bytestream_buffer_content_size<4) \
gdi_bytestream_buffer_load_file(4); \
gdi_bytestream_buffer_content_size-=4; \
gdi_bytestream_file_offset+=4; \
X = *gdi_bytestream_buffer_reader++; \
X |= (*gdi_bytestream_buffer_reader++) << 8; \
X |= (*gdi_bytestream_buffer_reader++) << 16;\
X |= (*gdi_bytestream_buffer_reader++) << 24;\
} \
#define GDI_BYTESTREAM_FLUSH_FILE(COUNT) \
{ \
int count = COUNT; \
gdi_bytestream_file_offset+=count; \
if(count >= gdi_bytestream_buffer_ptr_size) \
gdi_bytestream_seek_file(gdi_bytestream_file_offset); \
else \
{ \
while(count) \
{ \
if(gdi_bytestream_buffer_content_size < (int)count)\
{ \
count -= gdi_bytestream_buffer_content_size; \
gdi_bytestream_buffer_content_size=0; \
gdi_bytestream_buffer_load_file(1); \
} \
else \
{ \
gdi_bytestream_buffer_content_size-=count; \
gdi_bytestream_buffer_reader +=count; \
count=0; \
} \
} \
} \
} \
#define GDI_BYTESTREAM_IS_EOF_FILE \
(gdi_bytestream_buffer_content_size?FALSE:\
(gdi_bytestream_buffer_load_file_widthout_exception(1))?FALSE:TRUE)
#define GDI_BYTESTREAM_TELL_FILE gdi_bytestream_file_offset
#define GDI_BYTESTREAM_GET_ARRAY_FILE(ARRAY_POINTER,SIZE) \
{ \
int size = SIZE; \
while(size>0) \
{ \
int n; \
if(gdi_bytestream_buffer_content_size == 0) \
gdi_bytestream_buffer_load_file(1); \
n= GDI_MIN(size,gdi_bytestream_buffer_content_size); \
memcpy(ARRAY_POINTER,gdi_bytestream_buffer_reader,n);\
ARRAY_POINTER+=n; \
gdi_bytestream_buffer_content_size -=n; \
size -= n; \
gdi_bytestream_file_offset+=n; \
gdi_bytestream_buffer_reader+=n; \
} \
}
#endif /* _GDI_BYTESTREAM_H_ */