From 46329d5c3a1f959be78f966dec899adfc136e56a Mon Sep 17 00:00:00 2001
From: kramm <kramm>
Date: Sun, 28 Oct 2001 16:57:31 +0000
Subject: [PATCH] make the combined swfs suitable for streaming. (can be
disabled by setting config.antistream to 1)
---
src/combine.c | 348 +++++++++++++++++++++++++++++++--------------------------
1 file changed, 188 insertions(+), 160 deletions(-)
diff --git a/src/combine.c b/src/combine.c
index a612006..3483041 100644
--- a/src/combine.c
+++ b/src/combine.c
@@ -19,6 +19,8 @@
// TODO:
// * readers should be object-oriented
+static char* slavename;
+
static char* tag_placeobject2_name (struct swf_tag* tag)
{
struct PlaceObject2 plo2;
@@ -131,10 +133,182 @@ void write_changepos(struct swf_tag*tag, struct writer_t*w)
}
}
-uchar * combine(uchar*masterdata, int masterlength, char*slavename, uchar*slavedata, int slavelength, int*newlength)
+void write_sprite_defines(struct writer_t*w)
+{
+ int pos = 0;
+ while(slave.tags[pos].id != 0) {
+ struct swf_tag * tag = &slave.tags[pos];
+ if(!is_sprite_tag(tag->id)) {
+ logf("<debug> processing sprite tag %02x", slave.tags[pos].id);
+ if(is_defining_tag(tag->id))
+ {
+ logf("<debug> [sprite defs] write tag %02x (%d bytes in body)",
+ tag->id, tag->length);
+ writer_write(w, tag->fulldata, tag->fulllength);
+ }
+ else
+ {
+ switch(tag->id)
+ {case TAGID_DEFINEFONTINFO:
+ {
+ /* define font info is not a defining tag, in that
+ * it doesn't define a new id, but rather extends
+ * an existing one. It also isn't a sprite tag.
+ * Anyway we can't throw it out, so we just pass it
+ * through.
+ */
+ break;
+ }
+ case TAGID_EXPORTASSETS:
+ logf("<debug> deliberately ignoring EXPORTASSETS tag");
+ break;
+ case TAGID_ENABLEDEBUGGER:
+ logf("<debug> deliberately ignoring ENABLEDEBUGGER tag");
+ break;
+ case TAGID_BACKGROUNDCOLOR:
+ logf("<debug> deliberately ignoring BACKGROUNDCOLOR tag");
+ break;
+ case 40:
+ case 49:
+ case 51:
+ logf("<notice> found tag %d. This is a Generator template, isn't it?", slave.tags[pos].id);
+ break;
+ default:
+ logf("<notice> funny tag: %d is neither defining nor sprite", slave.tags[pos].id);
+ }
+ }
+ }
+ pos++;
+ }
+}
+
+
+void write_sprite(struct writer_t*w, int spriteid, int replaceddefine)
+{
+ u16 tmp;
+ u32 tmp32;
+ u32*tagidpos;
+ u8*startpos;
+ int pos = 0;
+ // write slave(2) (header)
+ tmp = 0x3f + (TAGID_DEFINESPRITE << 6);
+ writer_write(w, &tmp, 2);
+ tagidpos = (u32*)writer_getpos(w);
+ writer_write(w, &tmp32, 4);
+
+ startpos = (u8*)writer_getpos(w);
+
+ if (spriteid<0)
+ {
+ logf("<warning> Didn't find anything named %s in file. No substitutions will occur.", slavename);
+ spriteid = get_free_id();
+ }
+
+ logf ("<notice> sprite id is %d", spriteid);
+ tmp = spriteid;
+ writer_write(w, &tmp, 2);
+ tmp = slave.header.count;
+ writer_write(w, &tmp, 2);
+
+
+ // write slave(2) (body)
+ tmp = slave.header.count;
+ logf("<debug> %d frames to go",tmp);
+
+ if(config.clip) {
+ tmp = 7 + (TAGID_PLACEOBJECT2 << 6);
+ writer_write(w, &tmp, 2);
+ tmp = 2+64; //flags: character + clipaction
+ writer_write(w, &tmp, 1);
+ tmp = 0; //depth
+ writer_write(w, &tmp,2);
+ tmp = replaceddefine; //id
+ writer_write(w, &tmp,2);
+ tmp = 65535; //clipdepth
+ writer_write(w, &tmp,2);
+ }
+
+ if(config.overlay) {
+ tmp = 5 + (TAGID_PLACEOBJECT2 << 6);
+ writer_write(w, &tmp, 2);
+ tmp = 2; //flags: character
+ writer_write(w, &tmp, 1);
+ tmp = 0; //depth
+ writer_write(w, &tmp,2);
+ tmp = replaceddefine; //id
+ writer_write(w, &tmp,2);
+ }
+
+ do {
+ struct swf_tag * tag = &slave.tags[pos];
+ if (is_sprite_tag(tag->id)) {
+
+ changedepth(tag, +1);
+ logf("<debug> [sprite main] write tag %02x (%d bytes in body)",
+ slave.tags[pos].id, slave.tags[pos].length);
+ write_changepos(tag, w);
+
+ if(tag->id == TAGID_SHOWFRAME)
+ {
+ tmp--;
+ logf("<debug> %d frames to go",tmp);
+ }
+ }
+ }
+ while(slave.tags[pos++].id != TAGID_END);
+
+ *tagidpos = (u8*)writer_getpos(w) - startpos; // set length of sprite (in header)
+ logf("<verbose> sprite length is %d",*tagidpos);
+}
+
+#define FLAGS_WRITEDEFINES 1
+#define FLAGS_WRITENONDEFINES 2
+#define FLAGS_WRITESPRITE 4
+void write_master(struct writer_t*w, int spriteid, int replaceddefine, int flags)
+{
+ int pos = 0;
+ do {
+ if(is_defining_tag(master.tags[pos].id) && (flags&1))
+ {
+ logf("<debug> [master] write tag %02x (%d bytes in body)",
+ master.tags[pos].id, master.tags[pos].length);
+ if( getidfromtag(&master.tags[pos]) == spriteid)
+ {
+ if(config.overlay)
+ {
+ *(u16*)master.tags[pos].data = replaceddefine;
+ writer_write(w, master.tags[pos].fulldata, master.tags[pos].fulllength);
+ } else {
+ /* don't write this tag */
+ logf("<verbose> replacing tag %d id %d with sprite", master.tags[pos].id
+ ,spriteid);
+ }
+
+ if(flags&4)
+ {
+ write_sprite_defines(w);
+ write_sprite(w, spriteid, replaceddefine);
+ }
+ } else {
+ writer_write(w, master.tags[pos].fulldata, master.tags[pos].fulllength);
+ }
+ }
+ if(!is_defining_tag(master.tags[pos].id) && (flags&2))
+ {
+ logf("<debug> [master] write tag %02x (%d bytes in body)",
+ master.tags[pos].id, master.tags[pos].length);
+ writer_write(w, master.tags[pos].fulldata, master.tags[pos].fulllength);
+ }
+ }
+ while(master.tags[pos++].id != 0);
+}
+
+
+uchar * combine(uchar*masterdata, int masterlength, char*_slavename, uchar*slavedata, int slavelength, int*newlength)
{
char master_flash = 0;
char slave_flash = 0;
+ slavename = _slavename;
logf("<debug> move x (%d)", config.movex);
logf("<debug> move y (%d)", config.movey);
@@ -172,10 +346,7 @@ uchar * combine(uchar*masterdata, int masterlength, char*slavename, uchar*slaved
{
int length;
int pos=0;
- u16 tmp;
u32 tmp32;
- u32*tagidpos;
- u8*startpos;
u32*headlength;
uchar*newdata;
int spriteid = -1;
@@ -223,168 +394,25 @@ uchar * combine(uchar*masterdata, int masterlength, char*slavename, uchar*slaved
swf_relocate (slavedata, slavelength, masterids);
read_swf(&slave, slavedata, slavelength);
-
- // write header
+
+ if(config.overlay)
+ replaceddefine = get_free_id();
+
+ // write file
writer_write(&w, "FWS",3);
headlength = (u32*)(writer_getpos(&w) + 1);
writer_write(&w, master.header.headerdata, master.header.headerlength);
- // write sprite(1)
-
- pos = 0;
- while(slave.tags[pos].id != 0) {
- struct swf_tag * tag = &slave.tags[pos];
- if(!is_sprite_tag(tag->id)) {
- logf("<debug> processing sprite tag %02x", slave.tags[pos].id);
- if(is_defining_tag(tag->id))
- {
- logf("<debug> [sprite defs] write tag %02x (%d bytes in body)",
- tag->id, tag->length);
- writer_write(&w, tag->fulldata, tag->fulllength);
- }
- else
- {
- switch(tag->id)
- {case TAGID_DEFINEFONTINFO:
- {
- /* define font info is not a defining tag, in that
- * it doesn't define a new id, but rather extends
- * an existing one. It also isn't a sprite tag.
- * Anyway we can't throw it out, so we just pass it
- * through.
- */
- break;
- }
- case TAGID_EXPORTASSETS:
- logf("<debug> deliberately ignoring EXPORTASSETS tag");
- break;
- case TAGID_ENABLEDEBUGGER:
- logf("<debug> deliberately ignoring ENABLEDEBUGGER tag");
- break;
- case TAGID_BACKGROUNDCOLOR:
- logf("<debug> deliberately ignoring BACKGROUNDCOLOR tag");
- break;
- case 40:
- case 49:
- case 51:
- logf("<notice> found tag %d. This is a Generator template, isn't it?", slave.tags[pos].id);
- break;
- default:
- logf("<notice> funny tag: %d is neither defining nor sprite", slave.tags[pos].id);
- }
- }
- }
- pos++;
- }
-
- // write master (1)
- pos = 0;
- do {
- if(is_defining_tag(master.tags[pos].id))
- {
- logf("<debug> [master] write tag %02x (%d bytes in body)",
- master.tags[pos].id, master.tags[pos].length);
- if( getidfromtag(&master.tags[pos]) == spriteid)
- {
- if(config.overlay)
- {
- *(u16*)master.tags[pos].data = replaceddefine = get_free_id();
- writer_write(&w, master.tags[pos].fulldata, master.tags[pos].fulllength);
- } else {
- /* don't write this tag */
- logf("<verbose> replacing tag %d id %d with sprite", master.tags[pos].id
- ,spriteid);
- }
- } else {
- writer_write(&w, master.tags[pos].fulldata, master.tags[pos].fulllength);
- }
- }
- }
- while(master.tags[pos++].id != 0);
-
- // write slave(2) (header)
- tmp = 0x3f + (TAGID_DEFINESPRITE << 6);
- writer_write(&w, &tmp, 2);
- tagidpos = (u32*)writer_getpos(&w);
- writer_write(&w, &tmp32, 4);
-
- startpos = (u8*)writer_getpos(&w);
-
- if (spriteid<0)
- {
- logf("<warning> Didn't find anything named %s in file. No substitutions will occur.", slavename);
- spriteid = get_free_id();
- }
-
- logf ("<notice> sprite id is %d", spriteid);
- tmp = spriteid;
- writer_write(&w, &tmp, 2);
- tmp = slave.header.count;
- writer_write(&w, &tmp, 2);
-
-
- // write slave(2) (body)
- pos = 0;
- tmp = slave.header.count;
- logf("<debug> %d frames to go",tmp);
-
- if(config.clip) {
- tmp = 7 + (TAGID_PLACEOBJECT2 << 6);
- writer_write(&w, &tmp, 2);
- tmp = 2+64; //flags: character + clipaction
- writer_write(&w, &tmp, 1);
- tmp = 0; //depth
- writer_write(&w, &tmp,2);
- tmp = replaceddefine; //id
- writer_write(&w, &tmp,2);
- tmp = 65535; //clipdepth
- writer_write(&w, &tmp,2);
- }
-
- if(config.overlay) {
- tmp = 5 + (TAGID_PLACEOBJECT2 << 6);
- writer_write(&w, &tmp, 2);
- tmp = 2; //flags: character
- writer_write(&w, &tmp, 1);
- tmp = 0; //depth
- writer_write(&w, &tmp,2);
- tmp = replaceddefine; //id
- writer_write(&w, &tmp,2);
- }
-
- do {
- struct swf_tag * tag = &slave.tags[pos];
- if (is_sprite_tag(tag->id)) {
-
- changedepth(tag, +1);
- logf("<debug> [sprite main] write tag %02x (%d bytes in body)",
- slave.tags[pos].id, slave.tags[pos].length);
- write_changepos(tag, &w);
-
- if(tag->id == TAGID_SHOWFRAME)
- {
- tmp--;
- logf("<debug> %d frames to go",tmp);
- }
- }
- }
- while(slave.tags[pos++].id != TAGID_END);
-
- *tagidpos = (u8*)writer_getpos(&w) - startpos; // set length of sprite (in header)
- logf("<verbose> sprite length is %d",*tagidpos);
-
- // write master (2)
- pos = 0;
- do {
- if(!is_defining_tag(master.tags[pos].id))
- {
- logf("<debug> [master] write tag %02x (%d bytes in body)",
- master.tags[pos].id, master.tags[pos].length);
- writer_write(&w, master.tags[pos].fulldata, master.tags[pos].fulllength);
- }
+ if(config.antistream) {
+ write_sprite_defines(&w);
+ write_sprite(&w, spriteid, replaceddefine);
+ write_master(&w, spriteid, replaceddefine, FLAGS_WRITEDEFINES);
+ write_master(&w, spriteid, replaceddefine, FLAGS_WRITENONDEFINES);
+ } else {
+ write_master(&w, spriteid, replaceddefine,
+ FLAGS_WRITEDEFINES|FLAGS_WRITENONDEFINES|FLAGS_WRITESPRITE);
}
- while(master.tags[pos++].id != 0);
tmp32 = (u8*)writer_getpos(&w) - (u8*)newdata; //length
*newlength = tmp32;
--
1.7.10.4