2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
4 * This component and the accompanying materials are made available
5 * under the terms of "Eclipse Public License v1.0"
6 * which accompanies this distribution, and is available
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
9 * Initial Contributors:
10 * Nokia Corporation - initial contribution.
19 #ifndef _JPEG_DECODER_H_
20 #define _JPEG_DECODER_H_
24 #define JPEG_MARKER_STUFFED 0x00
25 #define JPEG_MARKER_TEM 0x01
26 #define JPEG_MARKER_RES 0x02
28 #define JPEG_MARKER_SOF_0 0xc0
29 #define JPEG_MARKER_SOF_1 0xc1
30 #define JPEG_MARKER_SOF_2 0xc2
31 #define JPEG_MARKER_SOF_3 0xc3
32 #define JPEG_MARKER_DEFINE_HUFFMAN_TABLES 0xc4
33 #define JPEG_MARKER_SOF_5 0xc5
34 #define JPEG_MARKER_SOF_6 0xc6
35 #define JPEG_MARKER_SOF_7 0xc7
36 #define JPEG_MARKER_JPG 0xc8
37 #define JPEG_MARKER_SOF_9 0xc9
38 #define JPEG_MARKER_SOF_10 0xca
39 #define JPEG_MARKER_SOF_11 0xcb
40 #define JPEG_MARKER_DEFINE_ARITHMETIC_CONDITIONING 0xcc
41 #define JPEG_MARKER_SOF_13 0xcd
42 #define JPEG_MARKER_SOF_14 0xce
43 #define JPEG_MARKER_SOF_15 0xcf
45 #define JPEG_MARKER_RST_0 0xd0
46 #define JPEG_MARKER_RST_1 0xd1
47 #define JPEG_MARKER_RST_2 0xd2
48 #define JPEG_MARKER_RST_3 0xd3
49 #define JPEG_MARKER_RST_4 0xd4
50 #define JPEG_MARKER_RST_5 0xd5
51 #define JPEG_MARKER_RST_6 0xd6
52 #define JPEG_MARKER_RST_7 0xd7
54 #define JPEG_MARKER_SOI 0xd8
55 #define JPEG_MARKER_EOI 0xd9
56 #define JPEG_MARKER_SOS 0xda
57 #define JPEG_MARKER_DEFINE_QUANTIZATION_TABLES 0xdb
58 #define JPEG_MARKER_DNL 0xdc
59 #define JPEG_MARKER_DEFINE_RESTART_INTERVAL 0xdd
60 #define JPEG_MARKER_DHP 0xde
61 #define JPEG_MARKER_EXP 0xdf
62 #define JPEG_MARKER_APP(x) (0xe0 + (x))
63 #define JPEG_MARKER_JPG_(x) (0xf0 + (x))
64 #define JPEG_MARKER_COMMENT 0xfe
66 #define JPEG_MARKER_JFIF JPEG_MARKER_APP(0)
68 #define JPEG_MARKER_IS_START_OF_FRAME(x) ((x)>=0xc0 && (x) <= 0xcf && (x)!=0xc4 && (x)!=0xc8 && (x)!=0xcc)
69 #define JPEG_MARKER_IS_APP(x) ((x)>=0xe0 && (x) <= 0xef)
70 #define JPEG_MARKER_IS_RESET(x) ((x)>=0xd0 && (x)<=0xd7)
73 typedef struct _JpegDecoder JpegDecoder;
76 JpegDecoder *jpeg_decoder_new(void);
77 void jpeg_decoder_free(JpegDecoder *dec);
78 int jpeg_decoder_addbits(JpegDecoder *dec, unsigned char *data, unsigned int len);
79 int jpeg_decoder_decode (JpegDecoder *dec);
80 int jpeg_decoder_get_image_size(JpegDecoder *dec, int *width, int *height);
81 int jpeg_decoder_get_component_size(JpegDecoder *dec, int id,
82 int *width, int *height);
83 int jpeg_decoder_get_component_subsampling(JpegDecoder *dec, int id,
84 int *h_subsample, int *v_subsample);
85 int jpeg_decoder_get_component_ptr(JpegDecoder *dec, int id,
86 unsigned char **image, int *rowstride);
88 unsigned char *jpeg_decoder_get_argb_image (JpegDecoder *dec);
89 int jpeg_decode_argb (uint8_t *data, int length, uint32_t **image,
90 int *width, int *height);