static int dvd_seek_to_time(stream_t *stream, ifo_handle_t *vts_file, double sec)
{
unsigned int i, j, k, timeunit, ac_time, tmap_sector=0, cell_sector=0, vobu_sector=0;
int t=0;
double tm, duration;
int64_t pos = -1;
dvd_priv_t *d = stream->priv;
vts_tmapt_t *vts_tmapt = vts_file->vts_tmapt;
if(!vts_file->vts_tmapt || sec < 0)
return 0;
duration = (double) mp_get_titleset_length(d->vts_file, d->tt_srpt, d->cur_title) / 1000.0f;
if(sec > duration)
return 0;
i=d->cur_pgc_idx;
timeunit = vts_tmapt->tmap[i].tmu;
for(j = 0; j < vts_tmapt->tmap[i].nr_of_entries; j++) {
ac_time = timeunit * (j + 1);
if(ac_time >= sec)
break;
tmap_sector = vts_tmapt->tmap[i].map_ent[j] & 0x7fffffff;
}
//search enclosing cell
for(i=0; i<d->cur_pgc->nr_of_cells; i++) {
if(tmap_sector >= d->cur_pgc->cell_playback[i].first_sector && tmap_sector <= d->cur_pgc->cell_playback[i].last_sector) {
cell_sector = d->cur_pgc->cell_playback[i].first_sector;
break;
}
}
pos = ((int64_t)cell_sector)<<11;
do_seek(stream, pos);
do {
char buf[2048];
if (dvd_read_sector(stream, stream->priv, buf) < 0) // skip
break;
t = mp_dvdtimetomsec(&d->dsi_pack.dsi_gi.c_eltm);
} while(!t);
tm = dvd_get_current_time(stream, -1);
pos = ((int64_t)tmap_sector)<<11;
do_seek(stream, pos);
//now get current time in terms of the cell+cell time offset
memset(&d->dsi_pack.dsi_gi.c_eltm, 0, sizeof(dvd_time_t));
while(tm <= sec) {
char buf[2048];
if (dvd_read_sector(stream, stream->priv, buf) < 0) // skip
break;
pos += 2048;
tm = dvd_get_current_time(stream, -1);
};
tmap_sector = pos >> 11;
//search closest VOBU sector
k=(vts_file->vts_vobu_admap->last_byte + 1 - VOBU_ADMAP_SIZE)/4; //entries in the vobu admap
for(i=1; i<k; i++) {
if(vts_file->vts_vobu_admap->vobu_start_sectors[i] > tmap_sector)
break;
}
vobu_sector = vts_file->vts_vobu_admap->vobu_start_sectors[i-1];
pos = ((int64_t)vobu_sector) << 11;
do_seek(stream, pos);
return 1;
}
static int control(stream_t *stream,int cmd,void* arg)
{
dvd_priv_t *d = stream->priv;
switch(cmd)
{
case STREAM_CTRL_GET_TIME_LENGTH:
{
*((double *)arg) = (double) mp_get_titleset_length(d->vts_file, d->tt_srpt, d->cur_title)/1000.0;
return 1;
}
case STREAM_CTRL_GET_START_TIME:
{
*((double *)arg) = 0;
return 1;
}
case STREAM_CTRL_GET_NUM_TITLES:
{
*((unsigned int *)arg) = d->vmg_file->tt_srpt->nr_of_srpts;
return 1;
}
case STREAM_CTRL_GET_NUM_CHAPTERS:
{
int r;
r = get_num_chapter(d->vts_file, d->tt_srpt, d->cur_title);
if(! r) return STREAM_UNSUPPORTED;
*((unsigned int *)arg) = r;
return 1;
}
case STREAM_CTRL_GET_CHAPTER_TIME:
{
int r;
r = get_chapter_time(d->vts_file, d->tt_srpt, d->cur_title, (double *)arg);
if(! r) return STREAM_UNSUPPORTED;
return 1;
}
case STREAM_CTRL_GET_CURRENT_TITLE:
{
*((unsigned int *)arg) = d->cur_title;
return 1;
}
case STREAM_CTRL_GET_CURRENT_TIME:
{
double tm;
tm = dvd_get_current_time(stream, -1);
if(tm != -1) {
*((double *)arg) = tm;
return 1;
}
break;
}
case STREAM_CTRL_SEEK_TO_TIME:
{
if(dvd_seek_to_time(stream, d->vts_file, *((double*)arg)))
return 1;
break;
}
case STREAM_CTRL_GET_ASPECT_RATIO:
{
*((double *)arg) = !d->vts_file->vtsi_mat->vts_video_attr.display_aspect_ratio ? 4.0/3.0 : 16.0/9.0;
return 1;
}
case STREAM_CTRL_GET_NUM_ANGLES:
{
*((int *)arg) = d->vmg_file->tt_srpt->title[d->dvd_title].nr_of_angles;
return 1;
}
case STREAM_CTRL_GET_ANGLE:
{
*((int *)arg) = d->dvd_angle;
return 1;
}
case STREAM_CTRL_SET_ANGLE:
{
int ang = *((int *)arg);
if(ang>d->vmg_file->tt_srpt->title[d->dvd_title].nr_of_angles || ang<=0)
break;
d->dvd_angle = ang;
d->angle_seek = 1;
return 1;
}
case STREAM_CTRL_GET_LANG:
{
struct stream_lang_req *req = arg;
int lang = 0;
switch(req->type) {
case STREAM_AUDIO:
lang = dvd_lang_from_aid(stream, req->id);
break;
case STREAM_SUB:
lang = dvd_lang_from_sid(stream, req->id);
break;
}
if (!lang)
break;
snprintf(req->name, sizeof(req->name), "%c%c", lang >> 8, lang);
return STREAM_OK;
}
case STREAM_CTRL_GET_DVD_INFO:
{
struct stream_dvd_info_req *req = arg;
memset(req, 0, sizeof(*req));
req->num_subs = dvd_number_of_subs(stream);
memcpy(req->palette, d->cur_pgc->palette, sizeof(req->palette));
return STREAM_OK;
}
case STREAM_CTRL_GET_DISC_NAME:
{
char buffer[128];
if (DVDUDFVolumeInfo(d->dvd, buffer, sizeof(buffer), NULL, 0) < 0 &&
DVDISOVolumeInfo(d->dvd, buffer, sizeof(buffer), NULL, 0) < 0)
break;
if (!buffer[0])
break;
*(char**)arg = talloc_strdup(NULL, buffer);
return STREAM_OK;
}
}
return STREAM_UNSUPPORTED;
}
static int control(stream_t *stream,int cmd,void* arg)
{
dvd_priv_t *d = stream->priv;
switch(cmd)
{
case STREAM_CTRL_GET_TIME_LENGTH:
{
*((double *)arg) = (double) mp_get_titleset_length(d->vts_file, d->tt_srpt, d->cur_title-1)/1000.0;
return 1;
}
case STREAM_CTRL_GET_NUM_CHAPTERS:
{
int r;
r = get_num_chapter(d->vts_file, d->tt_srpt, d->cur_title-1);
if(! r) return STREAM_UNSUPPORTED;
*((unsigned int *)arg) = r;
return 1;
}
case STREAM_CTRL_SEEK_TO_CHAPTER:
{
int r;
r = seek_to_chapter(stream, d->vts_file, d->tt_srpt, d->cur_title-1, *((unsigned int *)arg));
if(! r) return STREAM_UNSUPPORTED;
return 1;
}
case STREAM_CTRL_GET_CURRENT_CHAPTER:
{
*((unsigned int *)arg) = dvd_chapter_from_cell(d, d->cur_title-1, d->cur_cell);
return 1;
}
case STREAM_CTRL_GET_CURRENT_TIME:
{
double tm;
tm = dvd_get_current_time(stream, 0);
if(tm != -1) {
*((double *)arg) = tm;
return 1;
}
break;
}
case STREAM_CTRL_SEEK_TO_TIME:
{
if(dvd_seek_to_time(stream, d->vts_file, *((double*)arg)))
return 1;
break;
}
case STREAM_CTRL_GET_ASPECT_RATIO:
{
*((double *)arg) = !d->vts_file->vtsi_mat->vts_video_attr.display_aspect_ratio ? 4.0/3.0 : 16.0/9.0;
return 1;
}
case STREAM_CTRL_GET_NUM_ANGLES:
{
*((int *)arg) = d->vmg_file->tt_srpt->title[dvd_title].nr_of_angles;
return 1;
}
case STREAM_CTRL_GET_ANGLE:
{
*((int *)arg) = dvd_angle+1;
return 1;
}
case STREAM_CTRL_SET_ANGLE:
{
int ang = *((int *)arg);
if(ang>d->vmg_file->tt_srpt->title[dvd_title].nr_of_angles || ang<=0)
break;
dvd_angle = ang - 1;
d->angle_seek = 1;
return 1;
}
}
return STREAM_UNSUPPORTED;
}
