src/wav2swf.c

   1 /* wav2swf.c
   2    Converts WAV/WAVE files to SWF.
   3
   4    Part of the swftools package.
   5
   6    Copyright (c) 2001 Matthias Kramm <kramm@quiss.org>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  21
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include "../lib/rfxswf.h"
  25 #include "../lib/log.h"
  26 #include "../lib/args.h"
  27 #include "wav.h"
  28
  29 char * filename = 0;
  30 char * outputname = "output.swf";
  31 int verbose = 2;
  32 int stopframe0 = 0;
  33
  34 #define DEFINESOUND_MP3 1 //define sound uses mp3?- undefine for raw sound.
  35
  36 static struct options_t options[] = {
  37 {"h", "help"},
  38 {"V", "version"},
  39 {"o", "output"},
  40 {"r", "framerate"},
  41 {"s", "samplerate"},
  42 {"b", "bitrate"},
  43 {"d", "definesound"},
  44 {"l", "loop"},
  45 {"C", "cgi"},
  46 {"S", "stop"},
  47 {"b", "bitrate"},
  48 {"v", "verbose"},
  49 {0,0}
  50 };
  51
  52 static int loop = 0;
  53 static int definesound = 0;
  54 static int framerate = 0;
  55 static int samplerate = 11025;
  56 static int bitrate = 32;
  57 static int do_cgi = 0;
  58
  59 static int mp3_bitrates[] =
  60 { 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 0};
  61
  62 int args_callback_option(char*name,char*val)
  63 {
  64     if(!strcmp(name, "V")) {
  65         printf("wav2swf - part of %s %s\n", PACKAGE, VERSION);
  66         exit(0);
  67     }
  68     else if(!strcmp(name, "o")) {
  69         outputname = val;
  70         return 1;
  71     }
  72     else if(!strcmp(name, "d")) {
  73         definesound = 1;
  74         return 0;
  75     }
  76     else if(!strcmp(name, "l")) {
  77         loop = atoi(val);
  78         definesound = 1;
  79         return 1;
  80     }
  81     else if(!strcmp(name, "v")) {
  82         verbose ++;
  83         return 0;
  84     }
  85     else if(!strcmp(name, "S")) {
  86         stopframe0 = 1;
  87         return 0;
  88     }
  89     else if(!strcmp(name, "C")) {
  90         do_cgi = 1;
  91         return 0;
  92     }
  93     else if(!strcmp(name, "r")) {
  94         float f;
  95         sscanf(val, "%f", &f);
  96         framerate = f*256;
  97         return 1;
  98     }
  99     else if(!strcmp(name, "s")) {
 100         samplerate = atoi(val);
 101         if(samplerate > 5000 && samplerate < 6000)
 102             samplerate = 5512;
 103         else if(samplerate > 11000 && samplerate < 12000)
 104             samplerate = 11025;
 105         else if(samplerate > 22000 && samplerate < 23000)
 106             samplerate = 22050;
 107         else if(samplerate > 44000 && samplerate < 45000)
 108             samplerate = 44100;
 109         else {
 110             fprintf(stderr, "Invalid samplerate: %d\n", samplerate);
 111             fprintf(stderr, "Allowed values: 11025, 22050, 44100\n", samplerate);
 112             exit(1);
 113         }
 114         return 1;
 115     }
 116     else if(!strcmp(name, "b")) {
 117         int t;
 118         int b = atoi(val);
 119         if(b<=0) {
 120             fprintf(stderr, "Not a valid bitrate: %s\n", val);
 121             exit(1);
 122         }
 123         if(b>160) {
 124             fprintf(stderr, "Bitrate must be <144. (%s)\n", val);
 125             exit(1);
 126         }
 127         for(t=0;mp3_bitrates[t];t++) {
 128             if(b== mp3_bitrates[t]) {
 129                 bitrate = b;
 130                 return 1;
 131             }
 132         }
 133         fprintf(stderr, "Invalid bitrate. Allowed bitrates are:\n");
 134         for(t=0;mp3_bitrates[t];t++) {
 135             printf("%d ", mp3_bitrates[t]);
 136         }
 137         printf("\n");
 138         exit(1);
 139     }
 140     else {
 141         printf("Unknown option: -%s\n", name);
 142         exit(1);
 143     }
 144     return 0;
 145 }
 146 int args_callback_longoption(char*name,char*val)
 147 {
 148     return args_long2shortoption(options, name, val);
 149 }
 150 void args_callback_usage(char *name)
 151 {
 152     printf("\n");
 153     printf("Usage: %s [-o filename] file.wav\n", name);
 154     printf("\n");
 155     printf("-h , --help                    Print short help message and exit\n");
 156     printf("-V , --version                 Print version info and exit\n");
 157     printf("-o , --output <filename>       Explicitly specify output file. (Otherwise, output will go to output.swf)\n");
 158     printf("-r , --framerate <fps>         Set file framerate to <fps> frames per second.\n");
 159     printf("-s , --samplerate <sps>        Set samplerate to <sps> frames per second (default: 11025).\n");
 160     printf("-b , --bitrate bps             Set mp3 bitrate to <bps>.\n");
 161     printf("-d , --definesound             Generate a DefineSound tag instead of streaming sound.\n");
 162     printf("-l , --loop n                  (Only used with -d)\n");
 163     printf("-C , --cgi                     For use as CGI- prepend http header, write to stdout.\n");
 164     printf("-S , --stop                    Stop the movie at frame 0\n");
 165     printf("-b , --bitrate <bps>           Set mp3 bitrate to <bps> (default: 32)\n");
 166     printf("-v , --verbose                 Be more verbose\n");
 167     printf("\n");
 168 }
 169 int args_callback_command(char*name,char*val)
 170 {
 171     if(filename) {
 172         fprintf(stderr, "Only one file allowed. You supplied at least two. (%s and %s)\n",
 173                  filename, name);
 174     }
 175     filename = name;
 176     return 0;
 177 }
 178
 179 extern int swf_mp3_bitrate;
 180 extern int swf_mp3_out_samplerate;
 181 extern int swf_mp3_in_samplerate;
 182
 183 int main (int argc,char ** argv)
 184 {
 185     SWF swf;
 186     RGBA rgb;
 187     SRECT r;
 188     S32 width=300,height = 300;
 189     TAG * tag;
 190
 191     int f,i,ls1,fs1;
 192     int count;
 193     int t;
 194     struct WAV wav,wav2;
 195     int blocksize;
 196     float blockspersecond;
 197     float framespersecond;
 198     float samplesperframe;
 199     float framesperblock;
 200     float samplesperblock;
 201     U16* samples;
 202     int numsamples;
 203
 204     processargs(argc, argv);
 205
 206     blocksize = (samplerate > 22050) ? 1152 : 576;
 207
 208     blockspersecond = (float)samplerate/blocksize;
 209
 210     framespersecond = blockspersecond;
 211     if(framerate)
 212         framespersecond = framerate/256.0;
 213
 214     framesperblock = framespersecond / blockspersecond;
 215     samplesperframe = (blocksize * blockspersecond) / framespersecond;
 216     samplesperblock = samplesperframe * framesperblock;
 217
 218     initLog(0,-1,0,0,-1,verbose);
 219
 220     if(!filename) {
 221         msg("<fatal> You must supply a filename");
 222         exit(1);
 223     }
 224
 225     if(!readWAV(filename, &wav))
 226     {
 227         msg("<fatal> Error reading %s", filename);
 228         exit(1);
 229     }
 230     convertWAV2mono(&wav,&wav2, samplerate);
 231     //printWAVInfo(&wav);
 232     //printWAVInfo(&wav2);
 233     samples = (U16*)wav2.data;
 234     numsamples = wav2.size/2;
 235
 236     if(numsamples%blocksize != 0)
 237     {
 238         // apply padding, so that block is a multiple of blocksize
 239         int numblocks = (numsamples+blocksize-1)/blocksize;
 240         int numsamples2;
 241         U16* samples2;
 242         numsamples2 = numblocks * blocksize;
 243         samples2 = malloc(sizeof(U16)*numsamples2);
 244         memcpy(samples2, samples, numsamples*sizeof(U16));
 245         memset(&samples2[numsamples], 0, sizeof(U16)*(numsamples2 - numsamples));
 246         numsamples = numsamples2;
 247         samples = samples2;
 248     }
 249
 250     memset(&swf,0x00,sizeof(SWF));
 251
 252     swf.fileVersion    = 5;
 253     swf.frameRate      = (int)(framespersecond*256);
 254
 255     swf.movieSize.xmax = 20*width;
 256     swf.movieSize.ymax = 20*height;
 257
 258     swf.firstTag = swf_InsertTag(NULL,ST_SETBACKGROUNDCOLOR);
 259     tag = swf.firstTag;
 260     rgb.r = 0xff;
 261     rgb.g = 0xff;
 262     rgb.b = 0xff;
 263     swf_SetRGB(tag,&rgb);
 264
 265     if(stopframe0) {
 266         ActionTAG*action = 0;
 267         tag = swf_InsertTag(tag, ST_DOACTION);
 268         action = action_Stop(action);
 269         action = action_End(action);
 270         swf_ActionSet(tag, action);
 271         swf_ActionFree(action);
 272
 273         tag = swf_InsertTag(tag, ST_SHOWFRAME);
 274     }
 275
 276     swf_mp3_bitrate = bitrate;
 277     swf_mp3_out_samplerate = samplerate;
 278     swf_mp3_in_samplerate = samplerate;
 279
 280     if(!definesound)
 281     {
 282         int oldframepos=-1, newframepos=0;
 283         float framesamplepos = 0;
 284         float framepos = 0;
 285         float samplepos = 0;
 286         ActionTAG* a = 0;
 287         U16 v1=0,v2=0;
 288         tag = swf_InsertTag(tag, ST_SOUNDSTREAMHEAD);
 289         swf_SetSoundStreamHead(tag, samplesperframe);
 290         msg("<notice> %d blocks", numsamples/blocksize);
 291         for(t=0;t<numsamples/blocksize;t++) {
 292             int s;
 293             U16*block1;
 294             int seek = blocksize - ((int)samplepos - (int)framesamplepos);
 295
 296             if(newframepos!=oldframepos) {
 297                 tag = swf_InsertTag(tag, ST_SOUNDSTREAMBLOCK);
 298                 msg("<notice> Starting block %d %d+%d", t, (int)samplepos, (int)blocksize);
 299                 block1 = &samples[t*blocksize];
 300                 swf_SetSoundStreamBlock(tag, block1, seek, 1);
 301                 v1 = v2 = GET16(tag->data);
 302             } else {
 303                 msg("<notice> Adding data...", t);
 304                 block1 = &samples[t*blocksize];
 305                 swf_SetSoundStreamBlock(tag, block1, seek, 0);
 306                 v1+=v2;
 307                 PUT16(tag->data, v1);
 308             }
 309             samplepos += blocksize;
 310
 311             oldframepos = (int)framepos;
 312             framepos += framesperblock;
 313             newframepos = (int)framepos;
 314
 315             for(s=oldframepos;s<newframepos;s++) {
 316                 tag = swf_InsertTag(tag, ST_SHOWFRAME);
 317                 framesamplepos += samplesperframe;
 318             }
 319         }
 320         tag = swf_InsertTag(tag, ST_END);
 321     } else {
 322         SOUNDINFO info;
 323         tag = swf_InsertTag(tag, ST_DEFINESOUND);
 324         swf_SetU16(tag, 24); //id
 325 #ifdef DEFINESOUND_MP3
 326         swf_SetSoundDefine(tag, samples, numsamples);
 327 #else
 328         swf_SetU8(tag,(/*compression*/0<<4)|(/*rate*/3<<2)|(/*size*/1<<1)|/*mono*/0);
 329         swf_SetU32(tag, numsamples); // 44100 -> 11025
 330         swf_SetBlock(tag, samples, numsamples*2);
 331 #endif
 332
 333
 334         tag = swf_InsertTag(tag, ST_STARTSOUND);
 335         swf_SetU16(tag, 24); //id
 336         memset(&info, 0, sizeof(info));
 337         info.loops = loop;
 338         swf_SetSoundInfo(tag, &info);
 339         tag = swf_InsertTag(tag, ST_SHOWFRAME);
 340         tag = swf_InsertTag(tag, ST_END);
 341     }
 342
 343     if(do_cgi) {
 344         if FAILED(swf_WriteCGI(&swf)) fprintf(stderr,"WriteCGI() failed.\n");
 345     } else {
 346         f = open(outputname,O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644);
 347         if FAILED(swf_WriteSWF(f,&swf)) fprintf(stderr,"WriteSWF() failed.\n");
 348         close(f);
 349     }
 350
 351     swf_FreeTags(&swf);
 352     return 0;
 353 }
 354
 355