--- /dev/null
+/* swfbits.c
+
+ Bitmap functions (needs libjpeg)
+
+ Extension module for the rfxswf library.
+ Part of the swftools package.
+
+ Copyright (c) 2007 Alessandro Molina
+ Copyright (c) 2007 Matthias Kramm <kramm@quiss.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
+
+static unsigned AVM2_uint32toU30(unsigned val, char * out)
+{
+ unsigned len = 0;
+
+ while(val) {
+ out[len++] = val & 0xFF;
+ val >>= 7;
+ }
+
+ return len;
+}
+
+void AVM2_InsertStops(SWF*swf)
+{
+ TAG * t;
+
+ //MAIN AS3 CLASS INIT
+ unsigned frame_nums = 0;
+
+ /* Count number of pages to set up stop callback for every frame */
+ t = swf->firstTag;
+ while(t) {
+ if (t->id == ST_SHOWFRAME) ++frame_nums;
+ t = t->next;
+ }
+
+ char pool2[26] = {0x01,0x00,0x00,0x00,0x73,0x74,0x6f,0x70,0x5f,0x66,0x6c,0x61,0x2e,0x4d,0x61,0x69
+ ,0x6e,0x54,0x69,0x6d,0x65,0x6c,0x69,0x6e,0x65,0x00};
+ TAG * classCall = swf_InsertTagBefore(swf, swf->firstTag, 0x04c);
+ swf_SetBlock(classCall, pool2, sizeof(pool2));
+
+ //0x52 is the Flash9 equivalent to DoAction
+ char init_pool[322] = { 0x01,0x00,0x00,0x00, /* Flag Parameter to 0x52 */
+ 0x00, /* 0 terminated class name */
+ 0x10,0x00,0x2e,0x00, /* ABC file magic number */
+ 0x00,0x00,0x00,0x11, /* Constant Pool dec:
+ 0 Integers, 0 Unsigned Integers, 0 Doubles, 17 Strings */
+
+ /* HERE FOLLOW THE 16 STRINGS OF THE CPOOL */
+ 0x08, /* Len of 'stop_fla' (8) */
+ 's','t','o','p','_','f','l','a',
+ 0x0c, /* Len of 'MainTimeline' */
+ 'M','a','i','n','T','i','m','e','l','i','n','e',
+ 0x0d, /* Len of 'flash.display' (13) */
+ 'f','l','a','s','h','.','d','i','s','p','l','a','y',
+ 0x09, /* Len of 'MovieClip' (9) */
+ 'M','o','v','i','e','C','l','i','p',
+ 0x15, /* Len of 'stop_fla:MainTimeLine' (21) */
+ 's','t','o','p','_','f','l','a',':','M','a','i','n','T','i','m','e','l','i','n','e',
+ 0x06, /* Len of 'dostop' (6) */
+ 'd','o','s','t','o','p',
+ 0x00, /* Empty string: ref. to the global namespace */
+ 0x04, /* Len of 'stop' (4) */
+ 's','t','o','p',
+ 0x0e, /* Len of 'addFrameScript' (14) */
+ 'a','d','d','F','r','a','m','e','S','c','r','i','p','t',
+ 0x06, /* Len of 'Object' (6) */
+ 'O','b','j','e','c','t',
+ 0x0c, /* Len of 'flash.events' (12) */
+ 'f','l','a','s','h','.','e','v','e','n','t','s',
+ 0x0f, /* Len of 'EventDispatcher' (15) */
+ 'E','v','e','n','t','D','i','s','p','a','t','c','h','e','r',
+ 0x0d, /* Len of 'DisplayObject' (13) */
+ 'D','i','s','p','l','a','y','O','b','j','e','c','t',
+ 0x11, /* Len of 'InteractiveObject' (17) */
+ 'I','n','t','e','r','a','c','t','i','v','e','O','b','j','e','c','t',
+ 0x16, /* Len of 'DisplayObjectContainer' (22) */
+ 'D','i','s','p','l','a','y','O','b','j','e','c','t','C','o','n','t','a','i','n','e','r',
+ 0x06, /* Len of 'Sprite' (6) */
+ 'S','p','r','i','t','e',
+
+ 0x07, /* No. of NameSpaces (+1) */
+ /* HERE FOLLOW THE 6 NAMESPACES OF THE CPOOL*/
+ 0x16,0x01, /* kind: CONSTANT_PackageNamespace, ref. to: stop_fla */
+ 0x16,0x03, /* kind: CONSTANT_PackageNamespace, ref. to: flash.display */
+ 0x18,0x05, /* kind: CONSTANT_ProtectedNamespace, ref. to: stop_fla:MainTimeline */
+ 0x17,0x01, /* kind: CONSTANT_PackageInternalNs, ref. to: MainTimeline */
+ 0x16,0x07, /* kind: CONSTANT_PackageNamespace, ref. to the global namespace */
+ 0x16,0x0b, /* kind: CONSTANT_PackageNamespace, ref. to: flash.events */
+
+ 0x00, /* NO NAMESPACE_SET */
+
+ 0x0c, /* No. of MultiNames (+1) */
+ /* HERE FOLLOW THE 11 MULTINAMES OF THE CPOOL */
+ /* 1st value: Multiname kind (0x07 = Qualified Name, a multiname with 1 namespace, refers to a method)
+ 2nd value: refers to namespace name index in the namespace table
+ 3rd value: refers to method name index in the string table */
+ 0x07,0x01,0x02, /* Ref. to method: stop_fla:MainTimeLine */
+ 0x07,0x02,0x04, /* Ref. to method: flash.display:MovieClip */
+ 0x07,0x04,0x06, /* Ref. to method: <4th namespace>:dostop */
+ 0x07,0x05,0x08, /* Ref. to method: <global>:stop */
+ 0x07,0x05,0x09, /* Ref. to method: <global>:addFrameScript */
+ 0x07,0x05,0x0a, /* Ref. to method: <global>:Object */
+ 0x07,0x06,0x0c, /* Ref. to method: flash.events:EventDispatcher */
+ 0x07,0x02,0x0d, /* Ref. to method: flash.display:DisplayObject */
+ 0x07,0x02,0x0e, /* Ref. to method: flash.display:InteractiveObject */
+ 0x07,0x02,0x0f, /* Ref. to method: flash.display:DisplayObjectContainer */
+ 0x07,0x02,0x10, /* Ref. to method: flash.display:Sprite */
+ /* END OF THE CPOOL */
+
+ 0x04, /* Method count: there are 4 methods */
+ /* HERE FOLLOW THE 4 METHODS SIGNATURES */
+ /* METHOD 1 */
+ 0x00, /* No params (nor params types)*/
+ 0x00, /* Any return type */
+ 0x00, /* No method name */
+ 0x00, /* Flags */
+ /* SAME FOR THE OTHER METHODS */
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+
+ 0x00, /* Metadata count: there is no metadata (nor metadata_info) */
+
+ 0x01, /* Class count: there is 1 class */
+ /* HERE FOLLOW THE INSTANCE DATA */
+ 0x01, /* Name: ref. to multiname no. 1 (MainTimeline) */
+ 0x02, /* Super_name (base class): ref. to multiname no. 2 (flash.display) */
+ 0x08, /* Flags: 0x08 value indicates that it uses its protected namespace (and make next field exists) */
+ 0x03, /* Ref. to namespace no. 3 (MainTimeline, protected namespace for this class) */
+ 0x00, /* No. of interfaces: there are no interfaces (nor interface definition) */
+ 0x02, /* Initializer index: ref. to method no. 2 */
+ 0x01, /* No. of traits */
+ /* Trait section */
+ 0x03, /* Name: ref. to multiname no. 3 (stop) */
+ 0x01, /* 0000: no attributes (nor metadata in the next subsection);
+ then 1: type is Trait_Method */
+ /* Trait_method section */
+ 0x00, /* NO optimization for virtual calls */
+ 0x01, /* Ref. to method no. 1 */
+ /* HERE FOLLOW THE CLASS DATA */
+ 0x00, /* Ref. to method no. 0 as static initializer for this class */
+ 0x00, /* No. of traits for this class (no ones) */
+
+ 0x01, /* Script count: there is 1 script */
+ /* HERE FOLLOW THE SCRIPT DATA */
+ 0x03, /* Ref. to method no. 3, invoked prior to any other code in the script */
+ 0x01, /* No. of traits */
+ /* Trait section */
+ 0x01, /* Name: ref. to multiname no. 1 (flash.display:MovieClip) */
+ 0x04, /* 0000: no attributes (nor metadata in the next subsection);
+ then 4: type is Trait_Class*/
+ /* Trait_class section */
+ 0x01, /* Slot ID where the trait resides */
+ 0x00, /* Class index (there is only one class)*/
+
+ 0x04, /* Method body count: there are 4 method bodies */
+ /* HERE FOLLOW THE METHOD BODY DATA */
+ 0x00, /* Method index, ref. to method no. 0 */
+ 0x01, /* Max stack slots the method can use */
+ 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
+ 0x09,0x0a, /* Min and max scope depth the method can access*/
+ 0x03, /* Code length (in bytes) */
+ /* The actual method code:
+ this is the function stop_fla::MainTimeline$cinit()*/
+ 0xd0,0x30,0x47,
+ 0x00, /* No. of exceptions (no exceptions) */
+ 0x00, /* No. of traits (no traits) */
+
+ 0x01, /* Method index, ref. to method no. 1 */
+ 0x01, /* Max stack slots the method can use */
+ 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
+ 0x0a,0x0b, /* Min and max scope depth the method can access*/
+ 0x08, /* Code length (in bytes) */
+ /* The actual method code:
+ this is the function stop_fla::dostop(),
+ the one that actually executes the stop() */
+ 0xd0,0x30,0x5d,0x04,0x4f,0x04,0x00,0x47,
+ 0x00, /* No. of exceptions (no exceptions) */
+ 0x00, /* No. of traits (no traits) */
+ };
+
+ /* Header of stop_fla::MainTimeline() method */
+ char constructor_header[5] = {
+ 0x02, /* Method index, ref. to method no. 2 */
+ 0x03, /* Max stack slots the method can use */
+ 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
+ 0x0a,0x0b /* Min and max scope depth the method can access*/
+ };
+
+ char constructor_first[5] = {
+ /* The actual method code:
+ This is the function stop_fla::MainTimeline()
+ Does: calls the super constructor for class #0 (MainTimeline),
+ then puts on the stack the object, namespace and name of the arguments
+ needed by the addFrameScripts, then calls the addFrameScripts
+ */
+ 0xd0, /* getlocal0 */
+ 0x30, /* pushscope */
+ 0xd0, /* getlocal0 */
+ 0x49, /* constructsuper */
+ 0x00 /* 0 */
+ };
+
+ char constructor_frame_register[10] = {
+ 0x5d, /* findpropstrict */
+ 0x05, /* 'addFrameScript' */
+ 0x25, /* pushshort */
+ 0x00, /* frame number for pushshort */
+ 0x02, /* NOP (hack to write u30 value of frame number when > 127) */
+ 0x60, /* getlex */
+ 0x03, /* 'stop_fla::dostop' */
+ 0x4f, /* callpropvoid */
+ 0x05, /* 'addFrameScript' */
+ 0x02 /* 2*/
+ };
+
+ char constructor_return[3] = {
+ 0x47, /* returnvoid */
+ 0x00, /* No. of exceptions (no exceptions) */
+ 0x00, /* No. of traits (no traits) */
+ };
+
+ char script_init_pool[47] = {
+ 0x03, /* Method index, ref. to method no. 3 */
+ 0x02, /* Max stack slots the method can use */
+ 0x01, /* No. of registers +1 the method can use: this one cannot use registers */
+ 0x01,0x09, /* Min and max scope depth the method can access*/
+ 0x27, /* Code length (in bytes) */
+ /* The actual method code:
+ this is the function script0$init() */
+ 0xd0,0x30,0x65,0x00,0x60,0x06,0x30,0x60,0x07,0x30,0x60,0x08,0x30,0x60,0x09,0x30,0x60,0x0a,0x30,0x60,
+ 0x0b,0x30,0x60,0x02,0x30,0x60,0x02,0x58,0x00,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x68,0x01,0x47,
+ 0x00, /* No. of exceptions (no exceptions) */
+ 0x00 /* No. of traits (no traits) */
+ };
+ /* END OF THE ABCFILE (Actionscript Byte Code) */
+
+ char code_len[5] = {0, };
+ unsigned clen_len = AVM2_uint32toU30((6 + sizeof(constructor_frame_register) * frame_nums), code_len);
+ unsigned i, offset = 0;
+
+ TAG *classInit = swf_InsertTagBefore(swf, swf->firstTag, 0x052);
+
+ /* Copy the environment Initialization code */
+ swf_SetBlock(classInit, init_pool,sizeof(init_pool));
+ /* Copy Constructor Method header */
+ swf_SetBlock(classInit, constructor_header, sizeof(constructor_header));
+ /* Add Code block size (u30) to the method header */
+ swf_SetBlock(classInit, code_len, clen_len);
+
+ /* Copy Constructor Method body first part */
+ swf_SetBlock(classInit, constructor_first, sizeof(constructor_first));
+
+ /* Register the callback for every frame */
+ for (i = 0; i < frame_nums; ++i) {
+ AVM2_uint32toU30(i,constructor_frame_register + 3); // Write current frame number
+ swf_SetBlock(classInit, constructor_frame_register, sizeof(constructor_frame_register));
+ }
+
+ /* Copy Constructor method body ending, just a return */
+ swf_SetBlock(classInit, constructor_return, sizeof(constructor_return));
+
+ /* Copy the script init code */
+ swf_SetBlock(classInit, script_init_pool, sizeof(script_init_pool));
+}
+
git.asbjorn.biz / swftools.git / commitdiff