storm/minidlna
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

* Add WAV file tag reading support.

Browse Source
This commit is contained in:
Justin Maggard 2011-06-21 01:57:45 +00:00
parent 3e760ebabf
commit 68bed133cd
1 changed files with 74 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
tagutils/tagutils-wav.c
View File

@ -49,9 +49,6 @@ _get_wavtags(char *filename, struct song_metadata *psong)
uint32_t current_offset;
uint32_t block_len;
int found_fmt = 0;
int found_data = 0;
//DEBUG DPRINTF(E_DEBUG,L_SCANNER,"Getting WAV file info\n");
if(!(fd = open(filename, O_RDONLY)))
@ -82,7 +79,7 @@ _get_wavtags(char *filename, struct song_metadata *psong)
/* now, walk through the chunks */
current_offset = 12;
while(!found_fmt && !found_data)
while(current_offset < psong->file_size)
{
len = 8;
if(!(len = read(fd, hdr, len)) || (len != 8))
@ -92,11 +89,16 @@ _get_wavtags(char *filename, struct song_metadata *psong)
return -1;
}
current_offset += 8;
block_len = GET_WAV_INT32(hdr + 4);
//DEBUG DPRINTF(E_DEBUG,L_SCANNER,"Read block %02x%02x%02x%02x (%c%c%c%c) of "
// "size %08x\n",hdr[0],hdr[1],hdr[2],hdr[3],
// hdr[0],hdr[1],hdr[2],hdr[3],block_len);
// "size 0x%08x\n",hdr[0],hdr[1],hdr[2],hdr[3],
// isprint(hdr[0]) ? hdr[0] : '?',
// isprint(hdr[1]) ? hdr[1] : '?',
// isprint(hdr[2]) ? hdr[2] : '?',
// isprint(hdr[3]) ? hdr[3] : '?',
// block_len);
if(block_len < 0)
{
@ -107,7 +109,6 @@ _get_wavtags(char *filename, struct song_metadata *psong)
if(strncmp((char*)&hdr, "fmt ", 4) == 0)
{
found_fmt = 1;
//DEBUG DPRINTF(E_DEBUG,L_SCANNER,"Found 'fmt ' header\n");
len = 16;
if(!read(fd, fmt, len) || (len != 16))
@ -133,10 +134,74 @@ _get_wavtags(char *filename, struct song_metadata *psong)
{
//DEBUG DPRINTF(E_DEBUG,L_SCANNER,"Found 'data' header\n");
data_length = block_len;
found_data = 1;
goto next_block;
}
else if(strncmp((char*)&hdr, "LIST", 4) == 0)
{
char *tags;
char *p;
int off;
int taglen;
char **m;
len = GET_WAV_INT32(hdr + 4);
if(len > 65536)
goto next_block;
tags = malloc(len);
if(!tags)
goto next_block;
if(read(fd, tags, len) < len ||
strncmp(tags, "INFO", 4) != 0)
{
free(tags);
goto next_block;
}
lseek(fd, current_offset + block_len + 8, SEEK_SET);
off = 4;
p = tags + off;
while(off < len - 8)
{
taglen = GET_WAV_INT32(p + 4);
//DEBUG DPRINTF(E_DEBUG, L_SCANNER, "%.*s: %.*s\n", 4, p, taglen, p + 8);
m = NULL;
if (taglen > 2048) {
DPRINTF(E_WARN, L_SCANNER, "Ignoring long tag [%.*s] in %s\n",
4, p+8, filename);
}
else if(strncmp(p, "INAM", 4) == 0)
m = &(psong->title);
else if(strncmp(p, "IART", 4) == 0)
m = &(psong->contributor[ROLE_TRACKARTIST]);
else if(strncmp(p, "IALB", 4) == 0)
m = &(psong->album);
else if(strncmp(p, "IGRE", 4) == 0)
m = &(psong->genre);
else if(strncmp(p, "ICMT", 4) == 0)
m = &(psong->comment);
else if(strncmp(p, "ICOM", 4) == 0)
m = &(psong->contributor[ROLE_COMPOSER]);
else if(strncmp(p, "ITRK", 4) == 0)
psong->track = atoi(p + 8);
else if(strncmp(p, "ICRD", 4) == 0 ||
strncmp(p, "IYER", 4) == 0)
psong->year = atoi(p + 8);
if(m)
{
*m = malloc(taglen + 1);
strncpy(*m, p + 8, taglen);
(*m)[taglen] = '\0';
}
p += taglen + 8;
off += taglen + 8;
}
free(tags);
}
next_block:
lseek(fd, current_offset + block_len, SEEK_SET);
current_offset += block_len;
}
close(fd);