gdi_imgdec_gif.c
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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_gif.c
*
* Project:
* --------
* PlutoMMI
*
* Description:
* ------------
* IMGDEC GIF decoder
*
* Author:
* -------
* -------
*
*============================================================================
* HISTORY
* Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*------------------------------------------------------------------------------
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*------------------------------------------------------------------------------
* Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*============================================================================
****************************************************************************/
/*****************************************************************************
* Include
*****************************************************************************/
#include "drm_gprot.h"
#include "gdi_internal.h"
#include "med_utility.h"
#include "gdi_imgdec_internal.h"
#include "gdi_imgdec_bytestream.h"
#include "gdi_imgdec_gif.h"
#include "kal_general_types.h"
#include "kal_release.h"
#include "kal_trace.h"
#include "setjmp.h"
#include "lcd_if.h"
#include "string.h"
#include "med_smalloc.h"
#include "MMIDataType.h"
#include "MMI_fw_trc.h"
#include "DebugInitDef_Int.h"
#include "gdi_datatype.h"
#include "gdi_image_gif.h"
#include "gdi_bytestream.h"
#include "gdi_primitive.h"
#include "gdi_const.h"
#include "gdi_include.h"
#include "gdi_animate.h"
#include "gdi_layer.h"
/****************************************************************************
* Variable ( will extern )
*****************************************************************************/
/*
* NOTICE: to make a region ARM9 D-cacheable, it must comply with some rules.
* If we make other variables D-cacheable without checking these rules,
* it may have potential issues.
*
* The current implementation also uses gdi_gif_local_palette[], gdi_gif_stack[] and GDI_TREE_BUFFER[] as HW GIF buffer.
* However, since MT623X does not have HW GIF decoder, the check is redundant.
*/
/****************************************************************************
* Local Variable
*****************************************************************************/
/*****************************************************************************
* Static Declaration
*****************************************************************************/
/*****************************************************************************
* Global Variable
*****************************************************************************/
/*****************************************************************************
* Local Function
*****************************************************************************/
/*****************************************************************************
* Global Function
*****************************************************************************/
/*****************************************************************************
* FUNCTION
* gdi_imgdec_gif_draw_handler
* DESCRIPTION
* IMGDEC GIF draw handler
* PARAMETERS
* out_layer [IN] output layer
* frame_pos [IN] frame index
* x [IN] x
* y [IN] y
* w [IN] width
* h [IN] height
* data_ptr [IN] image pointer
* img_size [IN] image size
* is_aborted [IN] aborted flag
* flag [IN] flag
* RETURNS
* Error code.
*****************************************************************************/
GDI_RESULT gdi_imgdec_gif_draw_handler(gdi_handle out_layer, U32 frame_pos, S32 x, S32 y, S32 w, S32 h, U8 *data_ptr, U32 img_size, BOOL *is_aborted, U32 flag, S32 aspect_flag)
{
/*----------------------------------------------------------------*/
/* Local Variables */
/*----------------------------------------------------------------*/
U16 frame_number = (U16) frame_pos;
GDI_RESULT result = GDI_FAILED;
gdi_layer_struct *temp_layer;
gdi_lcd_layer_struct *layer_info;
/*----------------------------------------------------------------*/
/* Code Body */
/*----------------------------------------------------------------*/
flag |= GDI_IMAGE_CODEC_FLAG_USE_SW_DECODE;
temp_layer = (gdi_layer_struct*)out_layer;
layer_info = &gdi_layer_info[temp_layer->id];
result = gdi_imgdec_gif_draw_internal(
out_layer,
x,
y,
w,
h,
data_ptr,
img_size,
frame_number,
(flag & GDI_IMAGE_CODEC_FLAG_IS_FILE) ? (BOOL)1 : (BOOL)0,
layer_info->source_key_enable,
layer_info->source_key,
is_aborted,
flag,
aspect_flag);
return result;
}
/*****************************************************************************
* FUNCTION
* gdi_imgdec_gif_get_dimension
* DESCRIPTION
* Gets GIF dimension.
* PARAMETERS
* src [IN] image source pointer
* size [IN] image size
* width [OUT] width
* height [OUT] height
* RETURNS
* Error code.
*****************************************************************************/
GDI_RESULT gdi_imgdec_gif_get_dimension(U8 *src, U32 size, S32 *width, S32 *height)
{
/*----------------------------------------------------------------*/
/* Local Variables */
/*----------------------------------------------------------------*/
gdi_imgdec_bytestream_struct bs;
U32 header;
S32 img_width, img_height;
GDI_RESULT ret;
/*----------------------------------------------------------------*/
/* Code Body */
/*----------------------------------------------------------------*/
ret = GDI_SUCCEED;
img_width = 0;
img_height = 0;
gdi_imgdec_bytestream_init(&bs, src, size);
do
{
header = 0;
gdi_imgdec_bytestream_read(&bs, &header, 3);
if (header != 0x464947) /* 'GIF' */
{
ret = GDI_FAILED;
break;
}
/*
* read the GIF dimention
*/
gdi_imgdec_bytestream_seek(&bs, 3);
/* read file header */
gdi_imgdec_bytestream_read(&bs, &img_width, 2);
gdi_imgdec_bytestream_read(&bs, &img_height, 2);
} while (0);
*width = img_width;
*height = img_height;
gdi_imgdec_bytestream_deinit(&bs);
return ret;
}