png.gg

リビジョン 3382, 6.0 kB (コミッタ: dsk, コミット時期: 2 年前)
PNG ファーストコミット

Line
1	{
2	#include <stdio.h>
3	#include "png.h"
4
5	#define GRAY_SIZE 1
6	#define GRAY_ALPHA_SIZE 2
7	#define RGB_SIZE 3
8	#define RGB_ALPHA_SIZE 4
9
10	static int readba(void cookie, char dst, int size)
11	{
12	return AS3_ByteArray_readBytes(dst, (AS3_Val)cookie, size);
13	}
14
15	static int writeba(void cookie, const char src, int size)
16	{
17	return AS3_ByteArray_writeBytes((AS3_Val)cookie, (char *)src, size);
18	}
19
20	static fpos_t seekba(void *cookie, fpos_t offs, int whence)
21	{
22	return AS3_ByteArray_seek((AS3_Val)cookie, offs, whence);
23	}
24
25	static int closeba(void *cookie)
26	{
27	AS3_Val zero = AS3_Int(0);
28	AS3_SetS((AS3_Val)cookie, "position", zero);
29	AS3_Release(zero);
30	return 0;
31	}
32	}
33
34	import flash.utils.ByteArray;
35
36	public function encodeSync(dest:ByteArray, source:ByteArray, width:int, height:int, colorType:uint,
37	filterType:uint, compressionLevel:int):void
38	{
39	closeba(source);
40
41	int sourceRowSize = RGB_ALPHA_SIZE * width;
42	int destRowSize;
43	switch (colorType)
44	{
45	case PNG_COLOR_TYPE_GRAY: destRowSize = GRAY_SIZE * width; break;
46	case PNG_COLOR_TYPE_GRAY_ALPHA: destRowSize = GRAY_ALPHA_SIZE * width; break;
47	case PNG_COLOR_TYPE_RGB: destRowSize = RGB_SIZE * width; break;
48	case PNG_COLOR_TYPE_RGB_ALPHA: destRowSize = RGB_ALPHA_SIZE * width; break;
49	}
50
51	FILE file = funopen((void )dest, readba, writeba, seekba, closeba);
52	if (!file)
53	{
54	}
55	png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
56	if (!png)
57	{
58	fclose(file);
59	}
60	png_infop info = png_create_info_struct(png);
61	if (!info)
62	{
63	png_destroy_write_struct(&png, (png_infopp)NULL);
64	fclose(file);
65	}
66	if (setjmp(png_jmpbuf(png)))
67	{
68	png_destroy_write_struct(&png, (png_infopp)NULL);
69	fclose(file);
70	}
71
72	png_init_io(png, file);
73	png_set_filter(png, PNG_FILTER_TYPE_DEFAULT, filterType);
74	png_set_compression_level(png, compressionLevel);
75	png_set_compression_buffer_size(png, (1 + destRowSize) * height);
76
77	png_set_IHDR(png, info, width, height, 8,
78	colorType, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
79	png_write_info(png, info);
80
81	int y, x;
82	unsigned char sourceRow = (unsigned char )malloc(sourceRowSize);
83	png_byte destRow = (png_byte )malloc(destRowSize);
84	switch (colorType)
85	{
86	case PNG_COLOR_TYPE_RGB:
87	for (y = 0; y < height; y ++)
88	{
89	AS3_ByteArray_readBytes(sourceRow, source, sourceRowSize);
90	for (x = 0; x < width; x ++)
91	{
92	(unsigned int )(destRow+3x) = (unsigned int )(sourceRow+1+4x);
93	}
94	png_write_row(png, destRow);
95	}
96	break;
97
98	case PNG_COLOR_TYPE_RGB_ALPHA:
99	for (y = 0; y < height; y ++)
100	{
101	AS3_ByteArray_readBytes(sourceRow, source, sourceRowSize);
102	for (x = 0; x < width; x ++)
103	{
104	(unsigned int )(destRow+4x) = (unsigned int )(sourceRow+1+4x);
105	(destRow+3+4x) = (png_byte )(sourceRow+4*x);
106	}
107	png_write_row(png, destRow);
108	}
109	break;
110	}
111	free(sourceRow);
112	free(destRow);
113
114	png_write_end(png, info);
115
116	png_destroy_write_struct(&png, &info);
117	fclose(file);
118	}
119
120	async public function encodeAsync(open:Function, progress:Function, complete:Function, rowSegments:int,
121	dest:ByteArray, source:ByteArray, width:int, height:int,
122	colorType:uint, filterType:uint, compressionLevel:int):void
123	{
124	AS3_Call(open, NULL, NULL);
125
126	closeba(source);
127
128	int sourceRowSize = RGB_ALPHA_SIZE * width;
129	int destRowSize;
130	switch (colorType)
131	{
132	case PNG_COLOR_TYPE_GRAY: destRowSize = GRAY_SIZE * width; break;
133	case PNG_COLOR_TYPE_GRAY_ALPHA: destRowSize = GRAY_ALPHA_SIZE * width; break;
134	case PNG_COLOR_TYPE_RGB: destRowSize = RGB_SIZE * width; break;
135	case PNG_COLOR_TYPE_RGB_ALPHA: destRowSize = RGB_ALPHA_SIZE * width; break;
136	}
137
138	FILE file = funopen((void )dest, readba, writeba, seekba, closeba);
139	if (!file)
140	{
141	}
142	png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
143	if (!png)
144	{
145	fclose(file);
146	}
147	png_infop info = png_create_info_struct(png);
148	if (!info)
149	{
150	png_destroy_write_struct(&png, (png_infopp)NULL);
151	fclose(file);
152	}
153	if (setjmp(png_jmpbuf(png)))
154	{
155	png_destroy_write_struct(&png, (png_infopp)NULL);
156	fclose(file);
157	}
158
159	png_init_io(png, file);
160	png_set_filter(png, PNG_FILTER_TYPE_DEFAULT, filterType);
161	png_set_compression_level(png, compressionLevel);
162	png_set_compression_buffer_size(png, (1 + destRowSize) * height);
163
164	png_set_IHDR(png, info, width, height, 8,
165	colorType, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
166	png_write_info(png, info);
167
168	int y, x;
169	unsigned char sourceRow = (unsigned char )malloc(sourceRowSize);
170	png_byte destRow = (png_byte )malloc(destRowSize);
171	switch (colorType)
172	{
173	case PNG_COLOR_TYPE_RGB:
174	AS3_CallT(progress, NULL, "IntType, IntType", 0, destRowSize * height);
175	for (y = 0; y < height; y ++)
176	{
177	AS3_ByteArray_readBytes(sourceRow, source, sourceRowSize);
178	for (x = 0; x < width; x ++)
179	{
180	(unsigned int )(destRow+3x) = (unsigned int )(sourceRow+1+4x);
181	}
182	png_write_row(png, destRow);
183
184	if (y % rowSegments == 0 \|\| y == height - 1)
185	{
186	AS3_CallT(progress, NULL, "IntType, IntType", destRowSize * (y + 1), destRowSize * height);
187	flyield();
188	}
189	}
190	break;
191
192	case PNG_COLOR_TYPE_RGB_ALPHA:
193	AS3_CallT(progress, NULL, "IntType, IntType", 0, destRowSize * height);
194	for (y = 0; y < height; y ++)
195	{
196	AS3_ByteArray_readBytes(sourceRow, source, sourceRowSize);
197	for (x = 0; x < width; x ++)
198	{
199	(unsigned int )(destRow+4x) = (unsigned int )(sourceRow+1+4x);
200	(destRow+3+4x) = (png_byte )(sourceRow+4*x);
201	}
202	png_write_row(png, destRow);
203
204	if (y % rowSegments == 0 \|\| y == height - 1)
205	{
206	AS3_CallT(progress, NULL, "IntType, IntType", destRowSize * (y + 1), destRowSize * height);
207	flyield();
208	}
209	}
210	break;
211	}
212	free(sourceRow);
213	free(destRow);
214
215	png_write_end(png, info);
216
217	png_destroy_write_struct(&png, &info);
218	fclose(file);
219
220	AS3_Call(complete, NULL, NULL);
221	}
222
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root/as3/PNG/src/alchemy/fileformats/png/png.gg

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