int32_t buffered_reader_enable_cache(buffered_reader_t * reader, int32_t enabled)
{
int32_t prev;
prev = reader->cache_enabled;
if (!prev && enabled) {
buffered_reader_reset_buffer(reader, buffered_reader_position(reader));
} else if (prev && !enabled) {
long long result;
sceIoWaitAsync(reader->handle, &result);
sceIoLseek32(reader->handle, buffered_reader_position(reader), PSP_SEEK_SET);
}
reader->cache_enabled = enabled;
return prev;
}
static int mp3_seek_seconds_offset(double npt)
{
int new_pos;
if (npt < 0) {
npt = 0;
} else if (npt > g_info.duration) {
__end();
return -1;
}
new_pos = npt * mp3info.average_bitrate / 8;
if (new_pos < 0) {
new_pos = 0;
}
if (mp3_data.use_buffer)
buffered_reader_seek(mp3_data.r, new_pos);
else
xrIoLseek(mp3_data.fd, new_pos, PSP_SEEK_SET);
mad_stream_finish(&stream);
mad_stream_init(&stream);
if (seek_valid_frame() == -1) {
__end();
return -1;
}
if (g_info.filesize > 0) {
long cur_pos;
if (mp3_data.use_buffer)
cur_pos = buffered_reader_position(mp3_data.r);
else
cur_pos = xrIoLseek(mp3_data.fd, 0, PSP_SEEK_CUR);
g_play_time = g_info.duration * cur_pos / g_info.filesize;
} else {
g_play_time = npt;
}
if (g_play_time < 0)
g_play_time = 0;
return 0;
}