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Diffstat (limited to '')
-rw-r--r-- | src/inputStream.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/inputStream.c b/src/inputStream.c new file mode 100644 index 000000000..0856dd125 --- /dev/null +++ b/src/inputStream.c @@ -0,0 +1,78 @@ +/* the Music Player Daemon (MPD) + * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu) + * This project's homepage is: http://www.musicpd.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 + */ + +#include "inputStream.h" + +#include <stdio.h> +#include <sys/types.h> +#include <unistd.h> +#include <errno.h> + +int initInputStreamFromFile(InputStream * inStream, char * filename) { + inStream->fp = fopen(filename,"r"); + if(!inStream->fp) { + inStream->error = errno; + return -1; + } + + inStream->offset = 0; + + fseek(inStream->fp,0,SEEK_END); + inStream->size = ftell(inStream->fp); + fseek(inStream->fp,0,SEEK_SET); + + return 0; +} + +int seekInputStream(InputStream * inStream, long offset) { + if(offset<0) { + inStream->error = EINVAL; + return -1; + } + + if(fseek(inStream->fp,offset,SEEK_SET)==0) { + inStream->offset = offset; + } + else { + inStream->error = errno; + return -1; + } + + return 0; +} + +size_t fillBufferFromInputStream(InputStream * inStream, char * buffer, + size_t buflen) +{ + size_t readSize; + + readSize = fread(buffer,1,buflen,inStream->fp); + + if(readSize>0) inStream->offset+=readSize; + + return readSize; +} + +int finishInputStream(InputStream * inStream) { + if(fclose(inStream->fp)<0) { + inStream->error = errno; + } + else return -1; + + return 0; +} |