gdi_imgdec_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_imgdec_bytestream.h
*
* Project:
* --------
* MAUI
*
* Description:
* ------------
* IMGDEC bytesteam reader 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!!
*==============================================================================
*******************************************************************************/
#include "fs_type.h"
#include "MMIDataType.h"
#include "gdi_const.h"
#include "gdi_datatype.h"
#ifndef _GDI_IMGDEC_BYTESTREAM_H_
#define _GDI_IMGDEC_BYTESTREAM_H_
#define GDI_IMGDEC_BYTESTREAM_BUFFER_SIZE 2048 /* size of file buffer cache */
typedef struct
{
FS_HANDLE file_handle;
int file_size;
int buffer_content_size;
int file_offset;
U8 *buffer_reader;
// TODO: use a pointer instead of array?
U8 *buffer;
U8 *buffer_ptr;
U32 buffer_ptr_size;
void *jmpbuf;
kal_bool is_from_memory;
} gdi_imgdec_bytestream_struct;
extern GDI_RESULT gdi_imgdec_bytestream_init_file(gdi_imgdec_bytestream_struct *handle, const S8 *file_name);
extern GDI_RESULT gdi_imgdec_bytestream_init_file_ext(
gdi_imgdec_bytestream_struct *handle,
const S8 *file_name,
U8 *file_buf,
U32 file_buf_size,
void *jmpbuf);
extern GDI_RESULT gdi_imgdec_bytestream_init(gdi_imgdec_bytestream_struct *handle, U8* src, U32 size);
extern GDI_RESULT gdi_imgdec_bytestream_deinit(gdi_imgdec_bytestream_struct *handle);
extern GDI_RESULT gdi_imgdec_bytestream_read(gdi_imgdec_bytestream_struct *handle, void *ptr, U32 size);
extern GDI_RESULT gdi_imgdec_bytestream_seek(gdi_imgdec_bytestream_struct *handle, S32 offset);
extern void gdi_imgdec_bytestream_buffer_load_file(gdi_imgdec_bytestream_struct *handle, int at_least);
extern void gdi_imgdec_bytestream_seek_file(gdi_imgdec_bytestream_struct *handle, S32 offset);
#define GDI_IMGDEC_BYTESTREAM_PEEK_BYTE_FILE(h, X) \
{ \
if (!h->buffer_content_size) \
gdi_imgdec_bytestream_buffer_load_file(h, 1); \
X = *(h->buffer_reader); \
}
#define GDI_IMGDEC_BYTESTREAM_PEEK_BYTE_N_FILE(h, X,OFFSET) \
{ \
if (h->buffer_content_size < OFFSET) \
gdi_imgdec_bytestream_buffer_load_file(h, OFFSET); \
X = h->buffer_reader[OFFSET]; \
}
#define GDI_IMGDEC_BYTESTREAM_GET_BYTE_FILE(h, X) \
{ \
if (!(h->buffer_content_size)) \
gdi_imgdec_bytestream_buffer_load_file(h, 1); \
h->buffer_content_size--; \
h->file_offset++; \
X = *(h->buffer_reader)++; \
}
#define GDI_IMGDEC_BYTESTREAM_GET_WORD_FILE(h, X) \
{ \
if (h->buffer_content_size < 2) \
gdi_imgdec_bytestream_buffer_load_file(h, 2); \
h->buffer_content_size -= 2; \
h->file_offset += 2; \
X = *(h->buffer_reader)++; \
X |= (*(h->buffer_reader)++) << 8; \
}
#define GDI_IMGDEC_BYTESTREAM_GET_3BYTES_FILE(h, X) \
{ \
if (h->buffer_content_size < 3) \
gdi_imgdec_bytestream_buffer_load_file(h, 3); \
h->buffer_content_size -= 3; \
h->file_offset += 3; \
X = *(h->buffer_reader)++; \
X |= (*(h->buffer_reader)++) << 8; \
X |= (*(h->buffer_reader)++) << 16;\
}
#define GDI_IMGDEC_BYTESTREAM_GET_DWORD_FILE(h, X) \
{ \
if (h->buffer_content_size < 4) \
gdi_imgdec_bytestream_buffer_load_file(h, 4); \
h->buffer_content_size -= 4; \
h->file_offset += 4; \
X = *(h->buffer_reader)++; \
X |= (*(h->buffer_reader)++) << 8; \
X |= (*(h->buffer_reader)++) << 16;\
X |= (*(h->buffer_reader)++) << 24;\
}
#define GDI_IMGDEC_BYTESTREAM_FLUSH_FILE(h, COUNT) \
{ \
int count = COUNT; \
h->file_offset += count; \
if(count >= (int)h->buffer_ptr_size) \
gdi_imgdec_bytestream_seek_file(h, h->file_offset); \
else \
{ \
while(count) \
{ \
if (h->buffer_content_size < (int)count) \
{ \
count -= h->buffer_content_size; \
h->buffer_content_size=0; \
gdi_imgdec_bytestream_buffer_load_file(h, 1); \
} \
else \
{ \
h->buffer_content_size -= count; \
h->buffer_reader += count; \
count = 0; \
} \
} \
} \
}
#define GDI_IMGDEC_BYTESTREAM_TELL_FILE(h) (h->file_offset)
#define GDI_IMGDEC_BYTESTREAM_GET_ARRAY_FILE(h, ARRAY_POINTER,SIZE) \
{ \
int size = SIZE; \
while (size > 0) \
{ \
int n; \
if (h->buffer_content_size == 0) \
gdi_imgdec_bytestream_buffer_load_file(h, 1); \
n= GDI_MIN(size, h->buffer_content_size); \
memcpy(ARRAY_POINTER, h->buffer_reader, n); \
ARRAY_POINTER += n; \
h->buffer_content_size -= n; \
size -= n; \
h->file_offset += n; \
h->buffer_reader += n; \
} \
}
#endif /* _GDI_IMGDEC_BYTESTREAM_H_ */