int BDRingBuffer::safe_read(void *data, uint sz)
{
int result = 0;
if (m_isHDMVNavigation)
{
HandleBDEvents();
while (result == 0)
{
BD_EVENT event;
result = bd_read_ext(bdnav,
(unsigned char *)data,
sz, &event);
HandleBDEvent(event);
if (result == 0)
HandleBDEvents();
}
}
else
{
result = bd_read(bdnav, (unsigned char *)data, sz);
}
m_currentTime = bd_tell_time(bdnav);
return result;
}
static int bluray_stream_control(stream_t *s, int cmd, void *arg)
{
struct bluray_priv_s *b = s->priv;
switch (cmd) {
case STREAM_CTRL_GET_NUM_CHAPTERS: {
BLURAY_TITLE_INFO *ti;
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
*((unsigned int *) arg) = ti->chapter_count;
bd_free_title_info(ti);
return 1;
}
case STREAM_CTRL_GET_CURRENT_TITLE: {
*((unsigned int *) arg) = b->current_title;
return 1;
}
case STREAM_CTRL_GET_CURRENT_CHAPTER: {
*((unsigned int *) arg) = bd_get_current_chapter(b->bd);
return 1;
}
case STREAM_CTRL_SEEK_TO_CHAPTER: {
BLURAY_TITLE_INFO *ti;
int chapter = *((unsigned int *) arg);
int64_t pos;
int r;
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
if (chapter < 0 || chapter > ti->chapter_count) {
bd_free_title_info(ti);
return STREAM_UNSUPPORTED;
}
pos = bd_chapter_pos(b->bd, chapter);
r = bluray_stream_seek(s, pos);
bd_free_title_info(ti);
return r ? 1 : STREAM_UNSUPPORTED;
}
case STREAM_CTRL_GET_TIME_LENGTH: {
BLURAY_TITLE_INFO *ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
*(double *)arg = ti->duration / 90000.0;
return STREAM_OK;
}
case STREAM_CTRL_GET_SIZE:
*(uint64_t*)arg = bd_get_title_size(b->bd);
return STREAM_OK;
case STREAM_CTRL_GET_CURRENT_TIME:
*(double *)arg = bd_tell_time(b->bd) / 90000.0;
return STREAM_OK;
case STREAM_CTRL_SEEK_TO_TIME: {
int64_t res;
double target = *(double*)arg * 90000.0;
BLURAY_TITLE_INFO *ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
// clamp to ensure that out-of-bounds seeks do not simply do nothing.
target = FFMAX(target, 0);
if (ti && ti->duration > 1)
target = FFMIN(target, ti->duration - 1);
res = bd_seek_time(b->bd, target);
if (res < 0)
return STREAM_ERROR;
s->pos = res;
return 1;
}
case STREAM_CTRL_GET_NUM_ANGLES: {
BLURAY_TITLE_INFO *ti;
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
*((int *) arg) = ti->angle_count;
bd_free_title_info(ti);
return 1;
}
case STREAM_CTRL_GET_ANGLE: {
*((int *) arg) = b->current_angle;
return 1;
}
case STREAM_CTRL_SET_ANGLE: {
BLURAY_TITLE_INFO *ti;
int angle = *((int *) arg);
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
if (angle < 0 || angle > ti->angle_count) {
bd_free_title_info(ti);
return STREAM_UNSUPPORTED;
}
b->current_angle = angle;
bd_seamless_angle_change(b->bd, angle);
bd_free_title_info(ti);
return 1;
}
case STREAM_CTRL_GET_LANG: {
struct stream_lang_req *req = arg;
const BLURAY_STREAM_INFO *si;
int count;
BLURAY_TITLE_INFO *ti = get_langs(b, req->type, &si, &count);
while (count-- > 0) {
if (si->pid == req->id) {
memcpy(req->buf, si->lang, 4);
req->buf[4] = 0;
bd_free_title_info(ti);
return STREAM_OK;
}
si++;
}
if (ti)
bd_free_title_info(ti);
return STREAM_ERROR;
}
default:
break;
}
return STREAM_UNSUPPORTED;
}
JNIEXPORT jlong JNICALL Java_org_videolan_Libbluray_tellTimeN(JNIEnv * env,
jclass cls, jlong np) {
BLURAY* bd = (BLURAY*)(intptr_t)np;
return bd_tell_time(bd);
}
long long BDRingBuffer::SeekInternal(long long pos, int whence)
{
long long ret = -1;
poslock.lockForWrite();
// Optimize no-op seeks
if (readaheadrunning &&
((whence == SEEK_SET && pos == readpos) ||
(whence == SEEK_CUR && pos == 0)))
{
ret = readpos;
poslock.unlock();
return ret;
}
// only valid for SEEK_SET & SEEK_CUR
long long new_pos = (SEEK_SET==whence) ? pos : readpos + pos;
// Here we perform a normal seek. When successful we
// need to call ResetReadAhead(). A reset means we will
// need to refill the buffer, which takes some time.
if ((SEEK_END == whence) ||
((SEEK_CUR == whence) && new_pos != 0))
{
errno = EINVAL;
ret = -1;
}
else
{
SeekInternal(new_pos);
m_currentTime = bd_tell_time(bdnav);
ret = new_pos;
}
if (ret >= 0)
{
readpos = ret;
ignorereadpos = -1;
if (readaheadrunning)
ResetReadAhead(readpos);
readAdjust = 0;
}
else
{
QString cmd = QString("Seek(%1, %2)").arg(pos)
.arg((whence == SEEK_SET) ? "SEEK_SET" :
((whence == SEEK_CUR) ?"SEEK_CUR" : "SEEK_END"));
LOG(VB_GENERAL, LOG_ERR, LOC + cmd + " Failed" + ENO);
}
poslock.unlock();
generalWait.wakeAll();
return ret;
}