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add song_length and bitrate to wma scanner

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This commit is contained in:
Ron Pedde 2005-04-16 20:56:47 +00:00
parent e5f833c181
commit 350e4affa9
1 changed files with 53 additions and 7 deletions
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60
src/wma.c
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@ -248,6 +248,7 @@ unsigned long long wma_convert_ll(unsigned char *src);
unsigned char *wma_utf16toutf8(char *utf16, int len);
int wma_parse_content_description(int fd,int size, MP3FILE *pmp3);
int wma_parse_extended_content_description(int fd,int size, MP3FILE *pmp3);
int wma_parse_file_properteis(int fd,int size, MP3FILE *pmp3);
/**
@ -487,6 +488,42 @@ int wma_parse_content_description(int fd,int size, MP3FILE *pmp3) {
return 0;
}
/**
* parse the file properties object. this is an object that
* contains playtime and bitrate, primarily.
*
* \param fd fd of the file we are reading from -- positioned at start
* \param size size of the content description block
* \param pmp3 the mp3 struct we are filling with gleaned data
*/
int wma_parse_file_properties(int fd,int size, MP3FILE *pmp3) {
long long play_duration;
int max_bitrate;
/* skip guid (16 bytes), filesize (8), creation time (8),
* data packets (8)
*/
lseek(fd,40,SEEK_CUR);
/* we'll ignore the preroll */
if(!wma_file_read_ll(fd, &play_duration))
return -1;
pmp3->song_length = (int) (play_duration / 10000);
/* skip send_duration (8), preroll (8), flags(4),
* min_packet_size (4), max_packet_size(4)
*/
lseek(fd,28,SEEK_CUR);
if(!wma_file_read_int(fd,&max_bitrate))
return -1;
pmp3->bitrate = max_bitrate/1000;
return 0;
}
/**
* convert utf16 string to utf8. This is a bit naive, but...
* Since utf-8 can't expand past 4 bytes per code point, and
@ -497,7 +534,7 @@ int wma_parse_content_description(int fd,int size, MP3FILE *pmp3) {
* always work. Besides, these are small strings, and will be freed
* after the db insert.
*
* We assume this is utf-16LE
* We assume this is utf-16LE, as it comes from windows
*
* \param utf16 utf-16 to convert
* \param len length of utf-16 string
@ -536,9 +573,9 @@ unsigned char *wma_utf16toutf8(char *utf16, int len) {
}
/* get bottom 10 of each */
w1 = w1 & 0x3FFF;
w1 = w1 & 0x03FF;
w1 = w1 << 10;
w1 = w1 | (w2 & 0x3FFF);
w1 = w1 | (w2 & 0x03FF);
/* add back the 0x10000 */
w1 += 0x10000;
@ -648,6 +685,7 @@ int scan_get_wmainfo(char *filename, MP3FILE *pmp3) {
long offset=0;
int item;
int err;
int res=0;
wma_fd = r_open2(filename,O_RDONLY);
if(wma_fd == -1) {
@ -704,9 +742,11 @@ int scan_get_wmainfo(char *filename, MP3FILE *pmp3) {
if(pguid) {
DPRINTF(E_DBG,L_SCAN,"Found subheader: %s\n",pguid->name);
if(strcmp(pguid->name,"ASF_Content_Description_Object")==0) {
wma_parse_content_description(wma_fd,subhdr.size,pmp3);
res |= wma_parse_content_description(wma_fd,subhdr.size,pmp3);
} else if (strcmp(pguid->name,"ASF_Extended_Content_Description_Object")==0) {
wma_parse_extended_content_description(wma_fd,subhdr.size,pmp3);
res |= wma_parse_extended_content_description(wma_fd,subhdr.size,pmp3);
} else if (strcmp(pguid->name,"ASF_File_Properties_Object")==0) {
res |= wma_parse_file_properties(wma_fd,subhdr.size,pmp3);
}
} else {
DPRINTF(E_DBG,L_SCAN,"Unknown subheader: %02hhx%02hhx%02hhx%02hhx-"
@ -726,8 +766,14 @@ int scan_get_wmainfo(char *filename, MP3FILE *pmp3) {
}
DPRINTF(E_DBG,L_SCAN,"Successfully parsed file\n");
if(res) {
DPRINTF(E_INF,L_SCAN,"Error reading meta info for file %s\n",
filename);
} else {
DPRINTF(E_DBG,L_SCAN,"Successfully parsed file\n");
}
r_close(wma_fd);
return 0;
return res;
}