3 Bitmap functions (needs libjpeg)
5 Extension module for the rfxswf library.
6 Part of the swftools package.
8 Copyright (c) 2007 Alessandro Molina
9 Copyright (c) 2007 Matthias Kramm <kramm@quiss.org>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
25 #include "../rfxswf.h"
27 static unsigned AVM2_uint32toU30(unsigned val, char * out)
32 out[len++] = val & 0xFF;
39 void AVM2_InsertStops(SWF*swf)
44 unsigned frame_nums = 0;
46 /* Count number of pages to set up stop callback for every frame */
49 if (t->id == ST_SHOWFRAME) ++frame_nums;
53 char pool2[26] = {0x01,0x00,0x00,0x00,0x73,0x74,0x6f,0x70,0x5f,0x66,0x6c,0x61,0x2e,0x4d,0x61,0x69
54 ,0x6e,0x54,0x69,0x6d,0x65,0x6c,0x69,0x6e,0x65,0x00};
55 TAG * classCall = swf_InsertTagBefore(swf, swf->firstTag, 0x04c);
56 swf_SetBlock(classCall, (U8*)pool2, sizeof(pool2));
58 //0x52 is the Flash9 equivalent to DoAction
59 char init_pool[322] = { 0x01,0x00,0x00,0x00, /* Flag Parameter to 0x52 */
60 0x00, /* 0 terminated class name */
61 0x10,0x00,0x2e,0x00, /* ABC file magic number */
62 0x00,0x00,0x00,0x11, /* Constant Pool dec:
63 0 Integers, 0 Unsigned Integers, 0 Doubles, 17 Strings */
65 /* HERE FOLLOW THE 16 STRINGS OF THE CPOOL */
66 0x08, /* Len of 'stop_fla' (8) */
67 's','t','o','p','_','f','l','a',
68 0x0c, /* Len of 'MainTimeline' */
69 'M','a','i','n','T','i','m','e','l','i','n','e',
70 0x0d, /* Len of 'flash.display' (13) */
71 'f','l','a','s','h','.','d','i','s','p','l','a','y',
72 0x09, /* Len of 'MovieClip' (9) */
73 'M','o','v','i','e','C','l','i','p',
74 0x15, /* Len of 'stop_fla:MainTimeLine' (21) */
75 's','t','o','p','_','f','l','a',':','M','a','i','n','T','i','m','e','l','i','n','e',
76 0x06, /* Len of 'dostop' (6) */
77 'd','o','s','t','o','p',
78 0x00, /* Empty string: ref. to the global namespace */
79 0x04, /* Len of 'stop' (4) */
81 0x0e, /* Len of 'addFrameScript' (14) */
82 'a','d','d','F','r','a','m','e','S','c','r','i','p','t',
83 0x06, /* Len of 'Object' (6) */
84 'O','b','j','e','c','t',
85 0x0c, /* Len of 'flash.events' (12) */
86 'f','l','a','s','h','.','e','v','e','n','t','s',
87 0x0f, /* Len of 'EventDispatcher' (15) */
88 'E','v','e','n','t','D','i','s','p','a','t','c','h','e','r',
89 0x0d, /* Len of 'DisplayObject' (13) */
90 'D','i','s','p','l','a','y','O','b','j','e','c','t',
91 0x11, /* Len of 'InteractiveObject' (17) */
92 'I','n','t','e','r','a','c','t','i','v','e','O','b','j','e','c','t',
93 0x16, /* Len of 'DisplayObjectContainer' (22) */
94 'D','i','s','p','l','a','y','O','b','j','e','c','t','C','o','n','t','a','i','n','e','r',
95 0x06, /* Len of 'Sprite' (6) */
96 'S','p','r','i','t','e',
98 0x07, /* No. of NameSpaces (+1) */
99 /* HERE FOLLOW THE 6 NAMESPACES OF THE CPOOL*/
100 0x16,0x01, /* kind: CONSTANT_PackageNamespace, ref. to: stop_fla */
101 0x16,0x03, /* kind: CONSTANT_PackageNamespace, ref. to: flash.display */
102 0x18,0x05, /* kind: CONSTANT_ProtectedNamespace, ref. to: stop_fla:MainTimeline */
103 0x17,0x01, /* kind: CONSTANT_PackageInternalNs, ref. to: MainTimeline */
104 0x16,0x07, /* kind: CONSTANT_PackageNamespace, ref. to the global namespace */
105 0x16,0x0b, /* kind: CONSTANT_PackageNamespace, ref. to: flash.events */
107 0x00, /* NO NAMESPACE_SET */
109 0x0c, /* No. of MultiNames (+1) */
110 /* HERE FOLLOW THE 11 MULTINAMES OF THE CPOOL */
111 /* 1st value: Multiname kind (0x07 = Qualified Name, a multiname with 1 namespace, refers to a method)
112 2nd value: refers to namespace name index in the namespace table
113 3rd value: refers to method name index in the string table */
114 0x07,0x01,0x02, /* Ref. to method: stop_fla:MainTimeLine */
115 0x07,0x02,0x04, /* Ref. to method: flash.display:MovieClip */
116 0x07,0x04,0x06, /* Ref. to method: <4th namespace>:dostop */
117 0x07,0x05,0x08, /* Ref. to method: <global>:stop */
118 0x07,0x05,0x09, /* Ref. to method: <global>:addFrameScript */
119 0x07,0x05,0x0a, /* Ref. to method: <global>:Object */
120 0x07,0x06,0x0c, /* Ref. to method: flash.events:EventDispatcher */
121 0x07,0x02,0x0d, /* Ref. to method: flash.display:DisplayObject */
122 0x07,0x02,0x0e, /* Ref. to method: flash.display:InteractiveObject */
123 0x07,0x02,0x0f, /* Ref. to method: flash.display:DisplayObjectContainer */
124 0x07,0x02,0x10, /* Ref. to method: flash.display:Sprite */
125 /* END OF THE CPOOL */
127 0x04, /* Method count: there are 4 methods */
128 /* HERE FOLLOW THE 4 METHODS SIGNATURES */
130 0x00, /* No params (nor params types)*/
131 0x00, /* Any return type */
132 0x00, /* No method name */
134 /* SAME FOR THE OTHER METHODS */
139 0x00, /* Metadata count: there is no metadata (nor metadata_info) */
141 0x01, /* Class count: there is 1 class */
142 /* HERE FOLLOW THE INSTANCE DATA */
143 0x01, /* Name: ref. to multiname no. 1 (MainTimeline) */
144 0x02, /* Super_name (base class): ref. to multiname no. 2 (flash.display) */
145 0x08, /* Flags: 0x08 value indicates that it uses its protected namespace (and make next field exists) */
146 0x03, /* Ref. to namespace no. 3 (MainTimeline, protected namespace for this class) */
147 0x00, /* No. of interfaces: there are no interfaces (nor interface definition) */
148 0x02, /* Initializer index: ref. to method no. 2 */
149 0x01, /* No. of traits */
151 0x03, /* Name: ref. to multiname no. 3 (stop) */
152 0x01, /* 0000: no attributes (nor metadata in the next subsection);
153 then 1: type is Trait_Method */
154 /* Trait_method section */
155 0x00, /* NO optimization for virtual calls */
156 0x01, /* Ref. to method no. 1 */
157 /* HERE FOLLOW THE CLASS DATA */
158 0x00, /* Ref. to method no. 0 as static initializer for this class */
159 0x00, /* No. of traits for this class (no ones) */
161 0x01, /* Script count: there is 1 script */
162 /* HERE FOLLOW THE SCRIPT DATA */
163 0x03, /* Ref. to method no. 3, invoked prior to any other code in the script */
164 0x01, /* No. of traits */
166 0x01, /* Name: ref. to multiname no. 1 (flash.display:MovieClip) */
167 0x04, /* 0000: no attributes (nor metadata in the next subsection);
168 then 4: type is Trait_Class*/
169 /* Trait_class section */
170 0x01, /* Slot ID where the trait resides */
171 0x00, /* Class index (there is only one class)*/
173 0x04, /* Method body count: there are 4 method bodies */
174 /* HERE FOLLOW THE METHOD BODY DATA */
175 0x00, /* Method index, ref. to method no. 0 */
176 0x01, /* Max stack slots the method can use */
177 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
178 0x09,0x0a, /* Min and max scope depth the method can access*/
179 0x03, /* Code length (in bytes) */
180 /* The actual method code:
181 this is the function stop_fla::MainTimeline$cinit()*/
183 0x00, /* No. of exceptions (no exceptions) */
184 0x00, /* No. of traits (no traits) */
186 0x01, /* Method index, ref. to method no. 1 */
187 0x01, /* Max stack slots the method can use */
188 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
189 0x0a,0x0b, /* Min and max scope depth the method can access*/
190 0x08, /* Code length (in bytes) */
191 /* The actual method code:
192 this is the function stop_fla::dostop(),
193 the one that actually executes the stop() */
194 0xd0,0x30,0x5d,0x04,0x4f,0x04,0x00,0x47,
195 0x00, /* No. of exceptions (no exceptions) */
196 0x00, /* No. of traits (no traits) */
199 /* Header of stop_fla::MainTimeline() method */
200 char constructor_header[5] = {
201 0x02, /* Method index, ref. to method no. 2 */
202 0x03, /* Max stack slots the method can use */
203 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
204 0x0a,0x0b /* Min and max scope depth the method can access*/
207 char constructor_first[5] = {
208 /* The actual method code:
209 This is the function stop_fla::MainTimeline()
210 Does: calls the super constructor for class #0 (MainTimeline),
211 then puts on the stack the object, namespace and name of the arguments
212 needed by the addFrameScripts, then calls the addFrameScripts
214 0xd0, /* getlocal0 */
215 0x30, /* pushscope */
216 0xd0, /* getlocal0 */
217 0x49, /* constructsuper */
221 char constructor_frame_register[10] = {
222 0x5d, /* findpropstrict */
223 0x05, /* 'addFrameScript' */
224 0x25, /* pushshort */
225 0x00, /* frame number for pushshort */
226 0x02, /* NOP (hack to write u30 value of frame number when > 127) */
228 0x03, /* 'stop_fla::dostop' */
229 0x4f, /* callpropvoid */
230 0x05, /* 'addFrameScript' */
234 char constructor_return[3] = {
235 0x47, /* returnvoid */
236 0x00, /* No. of exceptions (no exceptions) */
237 0x00, /* No. of traits (no traits) */
240 char script_init_pool[47] = {
241 0x03, /* Method index, ref. to method no. 3 */
242 0x02, /* Max stack slots the method can use */
243 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
244 0x01,0x09, /* Min and max scope depth the method can access*/
245 0x27, /* Code length (in bytes) */
246 /* The actual method code:
247 this is the function script0$init() */
248 0xd0,0x30,0x65,0x00,0x60,0x06,0x30,0x60,0x07,0x30,0x60,0x08,0x30,0x60,0x09,0x30,0x60,0x0a,0x30,0x60,
249 0x0b,0x30,0x60,0x02,0x30,0x60,0x02,0x58,0x00,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x68,0x01,0x47,
250 0x00, /* No. of exceptions (no exceptions) */
251 0x00 /* No. of traits (no traits) */
253 /* END OF THE ABCFILE (Actionscript Byte Code) */
255 char code_len[5] = {0, };
256 unsigned clen_len = AVM2_uint32toU30((6 + sizeof(constructor_frame_register) * frame_nums), code_len);
257 unsigned i, offset = 0;
259 TAG *classInit = swf_InsertTagBefore(swf, swf->firstTag, 0x052);
261 /* Copy the environment Initialization code */
262 swf_SetBlock(classInit, (U8*)init_pool,sizeof(init_pool));
263 /* Copy Constructor Method header */
264 swf_SetBlock(classInit, (U8*)constructor_header, sizeof(constructor_header));
265 /* Add Code block size (u30) to the method header */
266 swf_SetBlock(classInit, (U8*)code_len, clen_len);
268 /* Copy Constructor Method body first part */
269 swf_SetBlock(classInit, (U8*)constructor_first, sizeof(constructor_first));
271 /* Register the callback for every frame */
272 for (i = 0; i < frame_nums; ++i) {
273 AVM2_uint32toU30(i,constructor_frame_register + 3); // Write current frame number
274 swf_SetBlock(classInit, (U8*)constructor_frame_register, sizeof(constructor_frame_register));
277 /* Copy Constructor method body ending, just a return */
278 swf_SetBlock(classInit, (U8*)constructor_return, sizeof(constructor_return));
280 /* Copy the script init code */
281 swf_SetBlock(classInit, (U8*)script_init_pool, sizeof(script_init_pool));