/* Parse a ReplayGain tag conforming to the "VorbisGain standard". If a
* valid tag is found, update mp3entry struct accordingly. Existing values
* are not overwritten.
*
* key Name of the tag.
* value Value of the tag.
* entry mp3entry struct to update.
*/
void parse_replaygain(const char* key, const char* value,
struct mp3entry* entry)
{
if (((strcasecmp(key, "replaygain_track_gain") == 0) ||
(strcasecmp(key, "rg_radio") == 0)) &&
!entry->track_gain)
{
entry->track_level = get_replaygain(value);
entry->track_gain = convert_gain(entry->track_level);
}
else if (((strcasecmp(key, "replaygain_album_gain") == 0) ||
(strcasecmp(key, "rg_audiophile") == 0)) &&
!entry->album_gain)
{
entry->album_level = get_replaygain(value);
entry->album_gain = convert_gain(entry->album_level);
}
else if (((strcasecmp(key, "replaygain_track_peak") == 0) ||
(strcasecmp(key, "rg_peak") == 0)) &&
!entry->track_peak)
{
entry->track_peak = get_replaypeak(value);
}
else if ((strcasecmp(key, "replaygain_album_peak") == 0) &&
!entry->album_peak)
{
entry->album_peak = get_replaypeak(value);
}
}
/* Parse a ReplayGain tag conforming to the "VorbisGain standard". If a
* valid tag is found, update mp3entry struct accordingly. Existing values
* are not overwritten. Returns number of bytes written to buffer.
*
* key Name of the tag.
* value Value of the tag.
* entry mp3entry struct to update.
* buffer Where to store the text for gain values (for later display).
* length Bytes left in buffer.
*/
long parse_replaygain(const char* key, const char* value,
struct mp3entry* entry, char* buffer, int length)
{
char **p = NULL;
if (((strcasecmp(key, "replaygain_track_gain") == 0)
|| (strcasecmp(key, "rg_radio") == 0)) && !entry->track_gain)
{
entry->track_gain = get_replaygain(value);
p = &(entry->track_gain_string);
}
else if (((strcasecmp(key, "replaygain_album_gain") == 0)
|| (strcasecmp(key, "rg_audiophile") == 0)) && !entry->album_gain)
{
entry->album_gain = get_replaygain(value);
p = &(entry->album_gain_string);
}
else if (((strcasecmp(key, "replaygain_track_peak") == 0)
|| (strcasecmp(key, "rg_peak") == 0)) && !entry->track_peak)
{
entry->track_peak = get_replaypeak(value);
}
else if ((strcasecmp(key, "replaygain_album_peak") == 0)
&& !entry->album_peak)
{
entry->album_peak = get_replaypeak(value);
}
if (p)
{
int len = strlen(value);
len = MIN(len, length - 1);
/* A few characters just isn't interesting... */
if (len > 1)
{
strlcpy(buffer, value, len + 1);
*p = buffer;
return len + 1;
}
}
return 0;
}
