mp3 extraction added.

[swftools.git] / src / swfextract.c

diff --git a/src/swfextract.c b/src/swfextract.c
index 62b6168..fa612fc 100644 (file)
--- a/src/swfextract.c
+++ b/src/swfextract.c
@@ -22,17 +22,20 @@
 
 char * filename = 0;
 char * destfilename = "output.swf";
-int verbose = 2;
+int verbose = 3;
 
 char* extractids = 0;
 char* extractframes = 0;
 char* extractjpegids = 0;
 char* extractpngids = 0;
+char extractmp3 = 0;
 
 char* extractname = 0;
 
 char hollow = 0;
 
+int numextracts = 0;
+
 struct options_t options[] =
 {
  {"o","output"},
@@ -47,6 +50,7 @@ struct options_t options[] =
  {0,0}
 };
 
+
 int args_callback_option(char*name,char*val)
 {
     if(!strcmp(name, "V")) {
@@ -59,6 +63,7 @@ int args_callback_option(char*name,char*val)
     } 
     else if(!strcmp(name, "i")) {
        extractids = val;
+       numextracts++;
        if(extractname) {
            fprintf(stderr, "You can only supply either name or id\n");
            exit(1);
@@ -67,6 +72,7 @@ int args_callback_option(char*name,char*val)
     } 
     else if(!strcmp(name, "n")) {
        extractname = val;
+       numextracts++;
        if(extractids) {
            fprintf(stderr, "You can only supply either name or id\n");
            exit(1);
@@ -77,11 +83,17 @@ int args_callback_option(char*name,char*val)
        verbose ++;
        return 0;
     } 
+    else if(!strcmp(name, "m")) {
+       extractmp3 = 1;
+       numextracts++;
+       return 0;
+    }
     else if(!strcmp(name, "j")) {
        if(extractjpegids) {
            fprintf(stderr, "Only one --jpegs argument is allowed. (Try to use a range, e.g. -j 1,2,3)\n");
            exit(1);
        }
+       numextracts++;
        extractjpegids = val;
        return 1;
     } 
@@ -91,11 +103,13 @@ int args_callback_option(char*name,char*val)
            fprintf(stderr, "Only one --pngs argument is allowed. (Try to use a range, e.g. -p 1,2,3)\n");
            exit(1);
        }
+       numextracts++;
        extractpngids = val;
        return 1;
     } 
 #endif
     else if(!strcmp(name, "f")) {
+       numextracts++;
        extractframes = val;
        return 1;
     }
@@ -125,6 +139,7 @@ void args_callback_usage(char*name)
 #ifdef _ZLIB_INCLUDED_
     printf("\t-p , --pngs IDs\t\t\t IDs of the PNG pictures to extract\n");
 #endif
+    printf("\t-m , --mp3\t\t\t Extract main mp3 stream\n");
     printf("\t-f , --frame frames\t\t frame numbers to extract\n");
     printf("\t-w , --hollow\t\t\t hollow mode: don't remove empty frames (use with -f)\n");
     printf("\t-V , --version\t\t\t Print program version and exit\n");
@@ -152,9 +167,9 @@ char * tagused;
 
 void idcallback(void*data)
 {
-    if(!(used[SWAP16(*(U16*)data)]&1)) {
+    if(!(used[GET16(data)]&1)) {
        changed = 1;
-       used[SWAP16(*(U16*)data)] |= 1;
+       used[GET16(data)] |= 1;
     }
 }
 
@@ -165,7 +180,7 @@ void enumerateIDs(TAG*tag, void(*callback)(void*))
     if(tag->len>=64) {
        len += 6;
        data = (U8*)malloc(len);
-       *(U16*)data = SWAP16((tag->id<<6)+63);
+       PUT16(data, (tag->id<<6)+63);
        *(U8*)&data[2] = tag->len;
        *(U8*)&data[3] = tag->len>>8;
        *(U8*)&data[4] = tag->len>>16;
@@ -174,7 +189,7 @@ void enumerateIDs(TAG*tag, void(*callback)(void*))
     } else {
        len += 2;
        data = (U8*)malloc(len);
-       *(U16*)data = SWAP16((tag->id<<6)+tag->len);
+       PUT16(data, (tag->id<<6)+tag->len);
        memcpy(&data[2], tag->data, tag->len);
     }
     map_ids_mem(data, len, callback);
@@ -395,7 +410,7 @@ void handlejpeg(TAG*tag)
 {
     char name[80];
     FILE*fi;
-    sprintf(name, "pic%d.jpeg", SWAP16(*(U16*)tag->data));
+    sprintf(name, "pic%d.jpeg", GET16(tag->data));
     /* swf jpeg images have two streams, which both start with ff d8 and
        end with ff d9. The following code handles sorting the middle
        <ff d9 ff d8> bytes out, so that one stream remains */
@@ -417,7 +432,7 @@ void handlejpeg(TAG*tag)
        fclose(fi);
     }
     if(tag->id == ST_DEFINEBITSJPEG3 && tag->len>6) {
-       U32 end = SWAP32(*(U32*)&tag->data[2])+6;
+       U32 end = GET32(&tag->data[2])+6;
        int pos = findjpegboundary(&tag->data[6], tag->len-6);
        if(pos<0)
            return;
@@ -648,6 +663,39 @@ void handlelossless(TAG*tag)
 }
 #endif
 
+FILE*mp3file;
+void handlesoundstream(TAG*tag)
+{
+    char*filename = "output.mp3";
+    if(numextracts==1) {
+       filename = destfilename;
+       if(!strcmp(filename,"output.swf"))
+           filename = "output.mp3";
+    }
+    switch(tag->id) {
+       case ST_SOUNDSTREAMHEAD:
+           if((tag->data[1]&0x30) == 0x20) { //mp3 compression
+               mp3file = fopen(filename, "wb");
+               logf("<notice> Writing mp3 data to %s",filename);
+           }
+           else
+               logf("<error> Soundstream is not mp3");
+       break;
+       case ST_SOUNDSTREAMHEAD2:
+           if((tag->data[1]&0x30) == 0x20) {//mp3 compression
+               mp3file = fopen("mainstream.mp3", "wb");
+               logf("<notice> Writing mp3 data to %s",filename);
+           }
+           else
+               logf("<error> Soundstream is not mp3 (2)");
+       break;
+       case ST_SOUNDSTREAMBLOCK:
+           if(mp3file)
+               fwrite(&tag->data[4],tag->len-4,1,mp3file);
+       break;
+    }
+}
+
 int main (int argc,char ** argv)
 { 
     TAG*tag;
@@ -660,7 +708,8 @@ int main (int argc,char ** argv)
     char listavailable = 0;
     processargs(argc, argv);
 
-    if(!extractframes && !extractids && ! extractname && !extractjpegids && !extractpngids)
+    if(!extractframes && !extractids && ! extractname && !extractjpegids && !extractpngids
+       && !extractmp3)
        listavailable = 1;
 
     if(!filename)
@@ -733,6 +782,12 @@ int main (int argc,char ** argv)
            }
        }
 
+       if(tag->id == ST_SOUNDSTREAMHEAD ||
+          tag->id == ST_SOUNDSTREAMHEAD2 ||
+          tag->id == ST_SOUNDSTREAMBLOCK) {
+           handlesoundstream(tag);
+       }
+
        if(tag->id == ST_JPEGTABLES)
            handlejpegtables(tag);
 
@@ -787,6 +842,9 @@ int main (int argc,char ** argv)
     if (found)
        extractTag(&swf, destfilename);
 
+    if(mp3file)
+       fclose(mp3file);
+
     swf_FreeTags(&swf);
     return 0;
 }