diff options
| -rw-r--r-- | firmware/mp3data.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/firmware/mp3data.c b/firmware/mp3data.c index 519bc60b04..3c9264b7cc 100644 --- a/firmware/mp3data.c +++ b/firmware/mp3data.c @@ -158,23 +158,18 @@ static bool mp3headerinfo(struct mp3info *info, unsigned long header) / info->frequency + info->padding; } - /* Frametime fraction calculation. - This fraction is reduced as far as possible. */ - if (freqindex != 0) { /* 48/32/24/16/12/8 kHz */ - /* integer number of milliseconds, denominator == 1 */ - info->ft_num = 1000 * info->frame_samples / info->frequency; - info->ft_den = 1; + /* Frametime fraction denominator */ + if (freqindex != 0) { /* 48/32/24/16/12/8 kHz */ + info->ft_den = 1; /* integer number of milliseconds */ } - else { /* 44.1/22.05/11.025 kHz */ - if (info->layer == 0) { - info->ft_num = 147000 * 384 / info->frequency; + else { /* 44.1/22.05/11.025 kHz */ + if (info->layer == 0) /* layer 1 */ info->ft_den = 147; - } - else { - info->ft_num = 49000 * info->frame_samples / info->frequency; + else /* layer 2+3 */ info->ft_den = 49; - } } + /* Frametime fraction numerator */ + info->ft_num = 1000 * info->ft_den * info->frame_samples / info->frequency; info->channel_mode = (header & CHANNELMODE_MASK) >> 6; info->mode_extension = (header & MODE_EXT_MASK) >> 4; |