int32_t mp4ff_get_sample_duration_use_offsets(const mp4ff_t *f, const int32_t track, const int32_t sample)
{
int32_t d,o;
d = mp4ff_get_sample_duration(f,track,sample);
if (d!=-1)
{
o = mp4ff_get_sample_offset(f,track,sample);
if (o>d) d = 0;
else d -= o;
}
return d;
}
static gboolean
xmms_mp4_gapless_try_legacy (xmms_xform_t *xform)
{
xmms_mp4_data_t *data;
guint64 startsamples, stopsamples;
g_return_val_if_fail (xform, FALSE);
data = xmms_xform_private_data_get (xform);
g_return_val_if_fail (data, FALSE);
startsamples = mp4ff_get_sample_offset (data->mp4ff, data->track, 0);
stopsamples = mp4ff_get_track_duration (data->mp4ff, data->track);
return xmms_mp4_gapless_set (xform, startsamples, stopsamples);
}
static gint
xmms_mp4_read (xmms_xform_t *xform, xmms_sample_t *buf, gint len, xmms_error_t *err)
{
xmms_mp4_data_t *data;
guint size, bytes_read = 0;
data = xmms_xform_private_data_get (xform);
g_return_val_if_fail (data, -1);
size = MIN (data->outbuf->len, len);
while (size == 0) {
guchar *tmpbuf;
guint tmpbuflen;
gint duration, offset;
if (data->sampleid >= data->numsamples) {
XMMS_DBG ("MP4 EOF");
return 0;
}
bytes_read = mp4ff_read_sample (data->mp4ff, data->track,
data->sampleid, &tmpbuf,
&tmpbuflen);
offset = mp4ff_get_sample_offset (data->mp4ff, data->track,
data->sampleid);
duration = mp4ff_get_sample_duration (data->mp4ff, data->track,
data->sampleid);
data->sampleid++;
xmms_xform_auxdata_set_int (xform, "frame_offset", offset);
xmms_xform_auxdata_set_int (xform, "frame_duration", duration);
if (bytes_read > 0) {
g_string_append_len (data->outbuf, (gchar *) tmpbuf, tmpbuflen);
g_free (tmpbuf);
}
size = MIN (data->outbuf->len, len);
}
memcpy (buf, data->outbuf->str, size);
g_string_erase (data->outbuf, 0, size);
return size;
}
int32_t mp4ff_find_sample_use_offsets(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip)
{
return mp4ff_find_sample(f,track,offset + mp4ff_get_sample_offset(f,track,0),toskip);
}
