diff src/opusfile-0.9/examples/opusfile_example.c @ 154:4664ac0c1032

Add Opus sources and macOS builds

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/opusfile-0.9/examples/opusfile_example.c	Wed Jan 23 13:48:08 2019 +0000
@@ -0,0 +1,389 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE libopusfile SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE libopusfile SOURCE CODE IS (C) COPYRIGHT 1994-2012           *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ *                                                                  *
+ ********************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/*For fileno()*/
+#if !defined(_POSIX_SOURCE)
+# define _POSIX_SOURCE 1
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <opusfile.h>
+#if defined(_WIN32)
+# include "win32utf8.h"
+# undef fileno
+# define fileno _fileno
+#endif
+
+static void print_duration(FILE *_fp,ogg_int64_t _nsamples,int _frac){
+  ogg_int64_t seconds;
+  ogg_int64_t minutes;
+  ogg_int64_t hours;
+  ogg_int64_t days;
+  ogg_int64_t weeks;
+  _nsamples+=_frac?24:24000;
+  seconds=_nsamples/48000;
+  _nsamples-=seconds*48000;
+  minutes=seconds/60;
+  seconds-=minutes*60;
+  hours=minutes/60;
+  minutes-=hours*60;
+  days=hours/24;
+  hours-=days*24;
+  weeks=days/7;
+  days-=weeks*7;
+  if(weeks)fprintf(_fp,"%liw",(long)weeks);
+  if(weeks||days)fprintf(_fp,"%id",(int)days);
+  if(weeks||days||hours){
+    if(weeks||days)fprintf(_fp,"%02ih",(int)hours);
+    else fprintf(_fp,"%ih",(int)hours);
+  }
+  if(weeks||days||hours||minutes){
+    if(weeks||days||hours)fprintf(_fp,"%02im",(int)minutes);
+    else fprintf(_fp,"%im",(int)minutes);
+    fprintf(_fp,"%02i",(int)seconds);
+  }
+  else fprintf(_fp,"%i",(int)seconds);
+  if(_frac)fprintf(_fp,".%03i",(int)(_nsamples/48));
+  fprintf(_fp,"s");
+}
+
+static void print_size(FILE *_fp,opus_int64 _nbytes,int _metric,
+ const char *_spacer){
+  static const char SUFFIXES[7]={' ','k','M','G','T','P','E'};
+  opus_int64 val;
+  opus_int64 den;
+  opus_int64 round;
+  int        base;
+  int        shift;
+  base=_metric?1000:1024;
+  round=0;
+  den=1;
+  for(shift=0;shift<6;shift++){
+    if(_nbytes<den*base-round)break;
+    den*=base;
+    round=den>>1;
+  }
+  val=(_nbytes+round)/den;
+  if(den>1&&val<10){
+    if(den>=1000000000)val=(_nbytes+(round/100))/(den/100);
+    else val=(_nbytes*100+round)/den;
+    fprintf(_fp,"%li.%02i%s%c",(long)(val/100),(int)(val%100),
+     _spacer,SUFFIXES[shift]);
+  }
+  else if(den>1&&val<100){
+    if(den>=1000000000)val=(_nbytes+(round/10))/(den/10);
+    else val=(_nbytes*10+round)/den;
+    fprintf(_fp,"%li.%i%s%c",(long)(val/10),(int)(val%10),
+     _spacer,SUFFIXES[shift]);
+  }
+  else fprintf(_fp,"%li%s%c",(long)val,_spacer,SUFFIXES[shift]);
+}
+
+static void put_le32(unsigned char *_dst,opus_uint32 _x){
+  _dst[0]=(unsigned char)(_x&0xFF);
+  _dst[1]=(unsigned char)(_x>>8&0xFF);
+  _dst[2]=(unsigned char)(_x>>16&0xFF);
+  _dst[3]=(unsigned char)(_x>>24&0xFF);
+}
+
+/*Make a header for a 48 kHz, stereo, signed, 16-bit little-endian PCM WAV.*/
+static void make_wav_header(unsigned char _dst[44],ogg_int64_t _duration){
+  /*The chunk sizes are set to 0x7FFFFFFF by default.
+    Many, though not all, programs will interpret this to mean the duration is
+     "undefined", and continue to read from the file so long as there is actual
+     data.*/
+  static const unsigned char WAV_HEADER_TEMPLATE[44]={
+    'R','I','F','F',0xFF,0xFF,0xFF,0x7F,
+    'W','A','V','E','f','m','t',' ',
+    0x10,0x00,0x00,0x00,0x01,0x00,0x02,0x00,
+    0x80,0xBB,0x00,0x00,0x00,0xEE,0x02,0x00,
+    0x04,0x00,0x10,0x00,'d','a','t','a',
+    0xFF,0xFF,0xFF,0x7F
+  };
+  memcpy(_dst,WAV_HEADER_TEMPLATE,sizeof(WAV_HEADER_TEMPLATE));
+  if(_duration>0){
+    if(_duration>0x1FFFFFF6){
+      fprintf(stderr,"WARNING: WAV output would be larger than 2 GB.\n");
+      fprintf(stderr,
+       "Writing non-standard WAV header with invalid chunk sizes.\n");
+    }
+    else{
+      opus_uint32 audio_size;
+      audio_size=(opus_uint32)(_duration*4);
+      put_le32(_dst+4,audio_size+36);
+      put_le32(_dst+40,audio_size);
+    }
+  }
+}
+
+int main(int _argc,const char **_argv){
+  OggOpusFile  *of;
+  ogg_int64_t   duration;
+  unsigned char wav_header[44];
+  int           ret;
+  int           is_ssl;
+  int           output_seekable;
+#if defined(_WIN32)
+  win32_utf8_setup(&_argc,&_argv);
+#endif
+  if(_argc!=2){
+    fprintf(stderr,"Usage: %s <file.opus>\n",_argv[0]);
+    return EXIT_FAILURE;
+  }
+  is_ssl=0;
+  if(strcmp(_argv[1],"-")==0){
+    OpusFileCallbacks cb={NULL,NULL,NULL,NULL};
+    of=op_open_callbacks(op_fdopen(&cb,fileno(stdin),"rb"),&cb,NULL,0,&ret);
+  }
+  else{
+    OpusServerInfo info;
+    /*Try to treat the argument as a URL.*/
+    of=op_open_url(_argv[1],&ret,OP_GET_SERVER_INFO(&info),NULL);
+#if 0
+    if(of==NULL){
+      OpusFileCallbacks  cb={NULL,NULL,NULL,NULL};
+      void              *fp;
+      /*For debugging: force a file to not be seekable.*/
+      fp=op_fopen(&cb,_argv[1],"rb");
+      cb.seek=NULL;
+      cb.tell=NULL;
+      of=op_open_callbacks(fp,&cb,NULL,0,NULL);
+    }
+#else
+    if(of==NULL)of=op_open_file(_argv[1],&ret);
+#endif
+    else{
+      if(info.name!=NULL){
+        fprintf(stderr,"Station name: %s\n",info.name);
+      }
+      if(info.description!=NULL){
+        fprintf(stderr,"Station description: %s\n",info.description);
+      }
+      if(info.genre!=NULL){
+        fprintf(stderr,"Station genre: %s\n",info.genre);
+      }
+      if(info.url!=NULL){
+        fprintf(stderr,"Station homepage: %s\n",info.url);
+      }
+      if(info.bitrate_kbps>=0){
+        fprintf(stderr,"Station bitrate: %u kbps\n",
+         (unsigned)info.bitrate_kbps);
+      }
+      if(info.is_public>=0){
+        fprintf(stderr,"%s\n",
+         info.is_public?"Station is public.":"Station is private.");
+      }
+      if(info.server!=NULL){
+        fprintf(stderr,"Server software: %s\n",info.server);
+      }
+      if(info.content_type!=NULL){
+        fprintf(stderr,"Content-Type: %s\n",info.content_type);
+      }
+      is_ssl=info.is_ssl;
+      opus_server_info_clear(&info);
+    }
+  }
+  if(of==NULL){
+    fprintf(stderr,"Failed to open file '%s': %i\n",_argv[1],ret);
+    return EXIT_FAILURE;
+  }
+  duration=0;
+  output_seekable=fseek(stdout,0,SEEK_CUR)!=-1;
+  if(op_seekable(of)){
+    opus_int64  size;
+    fprintf(stderr,"Total number of links: %i\n",op_link_count(of));
+    duration=op_pcm_total(of,-1);
+    fprintf(stderr,"Total duration: ");
+    print_duration(stderr,duration,3);
+    fprintf(stderr," (%li samples @ 48 kHz)\n",(long)duration);
+    size=op_raw_total(of,-1);
+    fprintf(stderr,"Total size: ");
+    print_size(stderr,size,0,"");
+    fprintf(stderr,"\n");
+  }
+  else if(!output_seekable){
+    fprintf(stderr,"WARNING: Neither input nor output are seekable.\n");
+    fprintf(stderr,
+     "Writing non-standard WAV header with invalid chunk sizes.\n");
+  }
+  make_wav_header(wav_header,duration);
+  if(!fwrite(wav_header,sizeof(wav_header),1,stdout)){
+    fprintf(stderr,"Error writing WAV header: %s\n",strerror(errno));
+    ret=EXIT_FAILURE;
+  }
+  else{
+    ogg_int64_t pcm_offset;
+    ogg_int64_t pcm_print_offset;
+    ogg_int64_t nsamples;
+    opus_int32  bitrate;
+    int         prev_li;
+    prev_li=-1;
+    nsamples=0;
+    pcm_offset=op_pcm_tell(of);
+    if(pcm_offset!=0){
+      fprintf(stderr,"Non-zero starting PCM offset: %li\n",(long)pcm_offset);
+    }
+    pcm_print_offset=pcm_offset-48000;
+    bitrate=0;
+    for(;;){
+      ogg_int64_t   next_pcm_offset;
+      opus_int16    pcm[120*48*2];
+      unsigned char out[120*48*2*2];
+      int           li;
+      int           si;
+      /*Although we would generally prefer to use the float interface, WAV
+         files with signed, 16-bit little-endian samples are far more
+         universally supported, so that's what we output.*/
+      ret=op_read_stereo(of,pcm,sizeof(pcm)/sizeof(*pcm));
+      if(ret==OP_HOLE){
+        fprintf(stderr,"\nHole detected! Corrupt file segment?\n");
+        continue;
+      }
+      else if(ret<0){
+        fprintf(stderr,"\nError decoding '%s': %i\n",_argv[1],ret);
+        if(is_ssl)fprintf(stderr,"Possible truncation attack?\n");
+        ret=EXIT_FAILURE;
+        break;
+      }
+      li=op_current_link(of);
+      if(li!=prev_li){
+        const OpusHead *head;
+        const OpusTags *tags;
+        int             binary_suffix_len;
+        int             ci;
+        /*We found a new link.
+          Print out some information.*/
+        fprintf(stderr,"Decoding link %i:                          \n",li);
+        head=op_head(of,li);
+        fprintf(stderr,"  Channels: %i\n",head->channel_count);
+        if(op_seekable(of)){
+          ogg_int64_t duration;
+          opus_int64  size;
+          duration=op_pcm_total(of,li);
+          fprintf(stderr,"  Duration: ");
+          print_duration(stderr,duration,3);
+          fprintf(stderr," (%li samples @ 48 kHz)\n",(long)duration);
+          size=op_raw_total(of,li);
+          fprintf(stderr,"  Size: ");
+          print_size(stderr,size,0,"");
+          fprintf(stderr,"\n");
+        }
+        if(head->input_sample_rate){
+          fprintf(stderr,"  Original sampling rate: %lu Hz\n",
+           (unsigned long)head->input_sample_rate);
+        }
+        tags=op_tags(of,li);
+        fprintf(stderr,"  Encoded by: %s\n",tags->vendor);
+        for(ci=0;ci<tags->comments;ci++){
+          const char *comment;
+          comment=tags->user_comments[ci];
+          if(opus_tagncompare("METADATA_BLOCK_PICTURE",22,comment)==0){
+            OpusPictureTag pic;
+            int            err;
+            err=opus_picture_tag_parse(&pic,comment);
+            fprintf(stderr,"  %.23s",comment);
+            if(err>=0){
+              fprintf(stderr,"%u|%s|%s|%ux%ux%u",pic.type,pic.mime_type,
+               pic.description,pic.width,pic.height,pic.depth);
+              if(pic.colors!=0)fprintf(stderr,"/%u",pic.colors);
+              if(pic.format==OP_PIC_FORMAT_URL){
+                fprintf(stderr,"|%s\n",pic.data);
+              }
+              else{
+                fprintf(stderr,"|<%u bytes of image data>\n",pic.data_length);
+              }
+              opus_picture_tag_clear(&pic);
+            }
+            else fprintf(stderr,"<error parsing picture tag>\n");
+          }
+          else fprintf(stderr,"  %s\n",tags->user_comments[ci]);
+        }
+        if(opus_tags_get_binary_suffix(tags,&binary_suffix_len)!=NULL){
+          fprintf(stderr,"<%u bytes of unknown binary metadata>\n",
+           binary_suffix_len);
+        }
+        fprintf(stderr,"\n");
+        if(!op_seekable(of)){
+          pcm_offset=op_pcm_tell(of)-ret;
+          if(pcm_offset!=0){
+            fprintf(stderr,"Non-zero starting PCM offset in link %i: %li\n",
+             li,(long)pcm_offset);
+          }
+        }
+      }
+      if(li!=prev_li||pcm_offset>=pcm_print_offset+48000){
+        opus_int32 next_bitrate;
+        opus_int64 raw_offset;
+        next_bitrate=op_bitrate_instant(of);
+        if(next_bitrate>=0)bitrate=next_bitrate;
+        raw_offset=op_raw_tell(of);
+        fprintf(stderr,"\r ");
+        print_size(stderr,raw_offset,0,"");
+        fprintf(stderr,"  ");
+        print_duration(stderr,pcm_offset,0);
+        fprintf(stderr,"  (");
+        print_size(stderr,bitrate,1," ");
+        fprintf(stderr,"bps)                    \r");
+        pcm_print_offset=pcm_offset;
+        fflush(stderr);
+      }
+      next_pcm_offset=op_pcm_tell(of);
+      if(pcm_offset+ret!=next_pcm_offset){
+        fprintf(stderr,"\nPCM offset gap! %li+%i!=%li\n",
+         (long)pcm_offset,ret,(long)next_pcm_offset);
+      }
+      pcm_offset=next_pcm_offset;
+      if(ret<=0){
+        ret=EXIT_SUCCESS;
+        break;
+      }
+      /*Ensure the data is little-endian before writing it out.*/
+      for(si=0;si<2*ret;si++){
+        out[2*si+0]=(unsigned char)(pcm[si]&0xFF);
+        out[2*si+1]=(unsigned char)(pcm[si]>>8&0xFF);
+      }
+      if(!fwrite(out,sizeof(*out)*4*ret,1,stdout)){
+        fprintf(stderr,"\nError writing decoded audio data: %s\n",
+         strerror(errno));
+        ret=EXIT_FAILURE;
+        break;
+      }
+      nsamples+=ret;
+      prev_li=li;
+    }
+    if(ret==EXIT_SUCCESS){
+      fprintf(stderr,"\nDone: played ");
+      print_duration(stderr,nsamples,3);
+      fprintf(stderr," (%li samples @ 48 kHz).\n",(long)nsamples);
+    }
+    if(op_seekable(of)&&nsamples!=duration){
+      fprintf(stderr,"\nWARNING: "
+       "Number of output samples does not match declared file duration.\n");
+      if(!output_seekable)fprintf(stderr,"Output WAV file will be corrupt.\n");
+    }
+    if(output_seekable&&nsamples!=duration){
+      make_wav_header(wav_header,nsamples);
+      if(fseek(stdout,0,SEEK_SET)||
+       !fwrite(wav_header,sizeof(wav_header),1,stdout)){
+        fprintf(stderr,"Error rewriting WAV header: %s\n",strerror(errno));
+        ret=EXIT_FAILURE;
+      }
+    }
+  }
+  op_free(of);
+  return ret;
+}