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mythdvdbuffer.cpp
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mythdvdbuffer.cpp
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// Qt
#include <QCoreApplication>
// MythTV
#include "mythconfig.h"
#include "mythcontext.h"
#include "mythmediamonitor.h"
#include "iso639.h"
#include "mythdvdplayer.h"
#include "compat.h"
#include "mythlogging.h"
#include "mythuihelper.h"
#include "mythuiactions.h"
#include "tv_actions.h"
#include "mythdvdbuffer.h"
// Std
#include <algorithm>
#define LOC QString("DVDRB: ")
#define IncrementButtonVersion if (++m_buttonVersion > 1024) m_buttonVersion = 1;
#define DVD_DRIVE_SPEED 1
static const std::array<const std::string,8> DVDMenuTable
{
"",
"",
QT_TRANSLATE_NOOP("(DVD menu)", "Title Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Root Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Subpicture Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Audio Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Angle Menu"),
//: DVD part/chapter menu
QT_TRANSLATE_NOOP("(DVD menu)", "Part Menu")
};
const QMap<int, int> MythDVDBuffer::kSeekSpeedMap =
{ { 3, 1 }, { 5, 2 }, { 10, 4 }, { 20, 8 },
{ 30, 10 }, { 60, 15 }, { 120, 20 }, { 180, 60 } };
MythDVDBuffer::MythDVDBuffer(const QString &Filename)
: MythOpticalBuffer(kMythBufferDVD)
{
MythDVDBuffer::OpenFile(Filename);
}
MythDVDBuffer::~MythDVDBuffer()
{
KillReadAheadThread();
CloseDVD();
m_menuBtnLock.lock();
ClearMenuSPUParameters();
m_menuBtnLock.unlock();
ClearChapterCache();
}
void MythDVDBuffer::CloseDVD(void)
{
QMutexLocker contextLocker(&m_contextLock);
m_rwLock.lockForWrite();
if (m_dvdnav)
{
SetDVDSpeed(-1);
dvdnav_close(m_dvdnav);
m_dvdnav = nullptr;
}
if (m_context)
{
m_context->DecrRef();
m_context = nullptr;
}
m_gotStop = false;
m_audioStreamsChanged = true;
m_rwLock.unlock();
}
void MythDVDBuffer::ClearChapterCache(void)
{
m_rwLock.lockForWrite();
for (QList<uint64_t> chapters : m_chapterMap)
chapters.clear();
m_chapterMap.clear();
m_rwLock.unlock();
}
long long MythDVDBuffer::SeekInternal(long long Position, int Whence)
{
long long ret = -1;
m_posLock.lockForWrite();
// Optimize no-op seeks
if (m_readAheadRunning &&
((Whence == SEEK_SET && Position == m_readPos) || (Whence == SEEK_CUR && Position == 0)))
{
ret = m_readPos;
m_posLock.unlock();
return ret;
}
// only valid for SEEK_SET & SEEK_CUR
long long new_pos = (SEEK_SET==Whence) ? Position : m_readPos + Position;
// 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
{
NormalSeek(new_pos);
ret = new_pos;
}
if (ret >= 0)
{
m_readPos = ret;
m_ignoreReadPos = -1;
if (m_readAheadRunning)
ResetReadAhead(m_readPos);
m_readAdjust = 0;
}
else
{
QString cmd = QString("Seek(%1, %2)").arg(Position)
.arg((Whence == SEEK_SET) ? "SEEK_SET" :
((Whence == SEEK_CUR) ? "SEEK_CUR" : "SEEK_END"));
LOG(VB_GENERAL, LOG_ERR, LOC + cmd + " Failed" + ENO);
}
m_posLock.unlock();
m_generalWait.wakeAll();
return ret;
}
long long MythDVDBuffer::NormalSeek(long long Time)
{
QMutexLocker locker(&m_seekLock);
return Seek(Time);
}
bool MythDVDBuffer::SectorSeek(uint64_t Sector)
{
dvdnav_status_t dvdRet = DVDNAV_STATUS_OK;
QMutexLocker lock(&m_seekLock);
dvdRet = dvdnav_sector_search(m_dvdnav, static_cast<int64_t>(Sector), SEEK_SET);
if (dvdRet == DVDNAV_STATUS_ERR)
{
LOG(VB_PLAYBACK, LOG_ERR, LOC + QString("SectorSeek() to sector %1 failed").arg(Sector));
return false;
}
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("DVD Playback SectorSeek() sector: %1").arg(Sector));
return true;
}
long long MythDVDBuffer::Seek(long long Time)
{
dvdnav_status_t dvdRet = DVDNAV_STATUS_OK;
int seekSpeed = 0;
int ffrewSkip = 1;
if (m_parent)
ffrewSkip = m_parent->GetFFRewSkip();
if (ffrewSkip != 1 && ffrewSkip != 0 && Time != 0)
{
auto it = kSeekSpeedMap.lowerBound(static_cast<int>(labs(Time)));
if (it == kSeekSpeedMap.end())
seekSpeed = *(it - 1);
else
seekSpeed = *it;
if (Time < 0)
seekSpeed = -seekSpeed;
dvdRet = dvdnav_relative_time_search(m_dvdnav, seekSpeed);
}
else
{
m_seektime = Time;
dvdRet = dvdnav_absolute_time_search(m_dvdnav, static_cast<uint64_t>(m_seektime), 0);
}
LOG(VB_PLAYBACK, LOG_DEBUG, QString("DVD Playback Seek() time: %1; seekSpeed: %2")
.arg(Time).arg(seekSpeed));
if (dvdRet == DVDNAV_STATUS_ERR)
{
LOG(VB_PLAYBACK, LOG_ERR, LOC + QString("Seek() to time %1 failed").arg(Time));
return -1;
}
if (!m_inMenu)
{
m_gotStop = false;
if (Time > 0 && ffrewSkip == 1)
m_seeking = true;
}
return m_currentpos;
}
bool MythDVDBuffer::IsOpen(void) const
{
return m_dvdnav;
}
bool MythDVDBuffer::IsBookmarkAllowed(void)
{
return GetTotalTimeOfTitle() >= 120;
}
bool MythDVDBuffer::IsInStillFrame(void) const
{
return m_still > 0;
}
bool MythDVDBuffer::IsSeekingAllowed(void)
{
// Don't allow seeking when the ringbuffer is
// waiting for the player to flush its buffers
// or waiting for the decoder.
return ((m_dvdEvent != DVDNAV_WAIT) &&
(m_dvdEvent != DVDNAV_HOP_CHANNEL) &&
(m_processState != PROCESS_WAIT));
}
void MythDVDBuffer::GetDescForPos(QString &Description) const
{
if (m_inMenu)
{
if ((m_part <= DVD_MENU_MAX) && !DVDMenuTable[m_part].empty())
Description = QCoreApplication::translate("(DVD menu)", DVDMenuTable[m_part].c_str());
}
else
{
Description = tr("Title %1 chapter %2").arg(m_title).arg(m_part);
}
}
/** \fn MythDVDBuffer::OpenFile(const QString &, uint)
* \brief Opens a dvd device for reading.
*
* \param lfilename Path of the dvd device to read.
* \return Returns true if the dvd was opened.
*/
bool MythDVDBuffer::OpenFile(const QString &Filename, uint /*Retry*/)
{
QMutexLocker contextLocker(&m_contextLock);
m_rwLock.lockForWrite();
if (m_dvdnav)
{
m_rwLock.unlock();
CloseDVD();
m_rwLock.lockForWrite();
}
m_safeFilename = Filename;
m_filename = Filename;
dvdnav_status_t res = dvdnav_open(&m_dvdnav, m_filename.toLocal8Bit().constData());
if (res == DVDNAV_STATUS_ERR)
{
m_lastError = tr("Failed to open DVD device at %1").arg(m_filename);
LOG(VB_GENERAL, LOG_ERR, LOC + QString("Failed to open DVD device at '%1'").arg(m_filename));
m_rwLock.unlock();
return false;
}
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Opened DVD device at '%1'").arg(m_filename));
if (m_context)
{
m_context->DecrRef();
m_context = nullptr;
}
// Set preferred languages
QString lang = gCoreContext->GetSetting("Language").section('_', 0, 0);
dvdnav_menu_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_audio_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_spu_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_set_readahead_flag(m_dvdnav, 0);
dvdnav_set_PGC_positioning_flag(m_dvdnav, 1);
// Check we aren't starting in a still frame (which will probably fail as
// ffmpeg will be unable to create a decoder)
if (dvdnav_get_next_still_flag(m_dvdnav))
{
LOG(VB_GENERAL, LOG_NOTICE,
LOC + "The selected title is a still frame. "
"Playback is likely to fail - please raise a bug report at "
"http://code.mythtv.org/trac");
}
MythDVDInfo::GetNameAndSerialNum(m_dvdnav, m_discName, m_discSerialNumber, Filename, LOC);
SetDVDSpeed();
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("DVD Serial Number %1").arg(m_discSerialNumber));
m_readBlockSize = DVD_BLOCK_SIZE * 62;
m_setSwitchToNext = false;
m_ateof = false;
m_commsError = false;
m_numFailures = 0;
m_rawBitrate = 8000;
CalcReadAheadThresh();
m_rwLock.unlock();
return true;
}
bool MythDVDBuffer::StartFromBeginning(void)
{
LOG(VB_GENERAL, LOG_INFO, LOC + "Resetting DVD device.");
// if a DVDNAV_STOP event has been emitted, dvdnav_reset does not
// seem to restore the state, hence we need to re-create
if (m_gotStop)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"DVD errored after initial scan - trying again");
CloseDVD();
OpenFile(m_filename);
if (!m_dvdnav)
LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to re-open DVD.");
}
if (m_dvdnav)
{
// Set preferred languages
QString lang = gCoreContext->GetSetting("Language").section('_', 0, 0);
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Setting DVD languages to %1")
.arg(lang));
QMutexLocker lock(&m_seekLock);
dvdnav_reset(m_dvdnav);
dvdnav_menu_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_audio_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_spu_language_select(m_dvdnav, lang.toLatin1().data());
m_audioStreamsChanged = true;
}
m_endPts = 0;
m_timeDiff = 0;
QMutexLocker contextLocker(&m_contextLock);
if (m_context)
{
m_context->DecrRef();
m_context = nullptr;
}
return m_dvdnav;
}
void MythDVDBuffer::GetChapterTimes(QList<long long> &Times)
{
if (!m_chapterMap.contains(m_title))
GetChapterTimes(m_title);
if (!m_chapterMap.contains(m_title))
return;
for (uint64_t chapter : m_chapterMap.value(m_title))
Times.push_back(static_cast<long long>(chapter));
}
uint64_t MythDVDBuffer::GetChapterTimes(int Title)
{
if (!m_dvdnav)
return 0;
uint64_t duration = 0;
uint64_t *times = nullptr;
uint32_t num = dvdnav_describe_title_chapters(m_dvdnav, Title, ×, &duration);
if (num < 1)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to retrieve chapter data");
return 0;
}
QList<uint64_t> chapters;
// add the start
chapters.append(0);
// don't add the last 'chapter' - which is the title end
if (num > 1)
for (uint i = 0; i < num - 1; i++)
chapters.append((times[i] + 45000) / 90000);
// Assigned via calloc, must be free'd not deleted
if (times)
free(times);
m_chapterMap.insert(Title, chapters);
return (duration + 45000) / 90000;
}
/** \brief returns current position in the PGC.
*/
long long MythDVDBuffer::GetReadPosition(void) const
{
uint32_t pos = 0;
uint32_t length = 1;
if (m_dvdnav)
{
if (dvdnav_get_position(m_dvdnav, &pos, &length) == DVDNAV_STATUS_ERR)
{
// try one more time
dvdnav_get_position(m_dvdnav, &pos, &length);
}
}
return pos * DVD_BLOCK_SIZE;
}
int MythDVDBuffer::GetTitle(void) const
{
return m_title;
}
bool MythDVDBuffer::DVDWaitingForPlayer(void) const
{
return m_playerWait;
}
int MythDVDBuffer::GetPart(void) const
{
return m_part;
}
int MythDVDBuffer::GetCurrentAngle(void) const
{
return m_currentAngle;
}
int MythDVDBuffer::GetNumAngles(void) const
{
return m_currentTitleAngleCount;
}
long long MythDVDBuffer::GetTotalReadPosition(void) const
{
return m_titleLength;
}
uint MythDVDBuffer::GetChapterLength(void) const
{
return static_cast<uint>(m_pgLength / 90000);
}
void MythDVDBuffer::GetPartAndTitle(int &Part, int &Title) const
{
Part = m_part;
Title = m_title;
}
uint32_t MythDVDBuffer::AdjustTimestamp(uint32_t Timestamp) const
{
uint32_t newTimestamp = Timestamp;
if (newTimestamp >= m_timeDiff)
newTimestamp -= m_timeDiff;
return newTimestamp;
}
int64_t MythDVDBuffer::AdjustTimestamp(int64_t Timestamp) const
{
int64_t newTimestamp = Timestamp;
if ((newTimestamp != AV_NOPTS_VALUE) && (newTimestamp >= m_timeDiff))
newTimestamp -= m_timeDiff;
return newTimestamp;
}
MythDVDContext *MythDVDBuffer::GetDVDContext(void)
{
QMutexLocker contextLocker(&m_contextLock);
if (m_context)
m_context->IncrRef();
return m_context;
}
int32_t MythDVDBuffer::GetLastEvent() const
{
return m_dvdEvent;
}
void MythDVDBuffer::WaitForPlayer(void)
{
if (!m_skipstillorwait)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC + "Waiting for player's buffers to drain");
m_playerWait = true;
int count = 0;
while (m_playerWait && count++ < 200)
{
m_rwLock.unlock();
usleep(10000);
m_rwLock.lockForWrite();
}
if (m_playerWait)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Player wait state was not cleared");
m_playerWait = false;
}
}
}
int MythDVDBuffer::SafeRead(void *Buffer, uint Size)
{
unsigned char *blockBuf = nullptr;
uint tot = 0;
int needed = static_cast<int>(Size);
char *dest = static_cast<char*>(Buffer);
int offset = 0;
bool reprocessing = false;
bool waiting = false;
if (m_gotStop)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "safe_read: called after DVDNAV_STOP");
errno = EBADF;
return -1;
}
if (m_readAheadRunning)
LOG(VB_GENERAL, LOG_ERR, LOC + "read ahead thread running.");
while ((m_processState != PROCESS_WAIT) && needed)
{
blockBuf = m_dvdBlockWriteBuf.data();
if (m_processState == PROCESS_REPROCESS)
{
m_processState = PROCESS_NORMAL;
reprocessing = true;
}
else
{
m_dvdStat = dvdnav_get_next_cache_block(m_dvdnav, &blockBuf, &m_dvdEvent, &m_dvdEventSize);
reprocessing = false;
}
if (m_dvdStat == DVDNAV_STATUS_ERR)
{
LOG(VB_GENERAL, LOG_ERR, LOC + QString("Failed to read block: %1")
.arg(dvdnav_err_to_string(m_dvdnav)));
errno = EIO;
return -1;
}
switch (m_dvdEvent)
{
// Standard packet for decoding
case DVDNAV_BLOCK_OK:
{
// copy block
if (!m_seeking)
{
memcpy(dest + offset, blockBuf, DVD_BLOCK_SIZE);
tot += DVD_BLOCK_SIZE;
}
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
// debug
LOG(VB_PLAYBACK|VB_FILE, LOG_DEBUG, LOC + "DVDNAV_BLOCK_OK");
}
break;
// cell change
case DVDNAV_CELL_CHANGE:
{
// get event details
auto *cell_event = reinterpret_cast<dvdnav_cell_change_event_t*>(blockBuf);
// update information for the current cell
m_cellChanged = true;
if (m_pgcLength != cell_event->pgc_length)
m_pgcLengthChanged = true;
m_pgLength = cell_event->pg_length;
m_pgcLength = cell_event->pgc_length;
m_cellStart = cell_event->cell_start;
m_pgStart = cell_event->pg_start;
// update title/part/still/menu information
m_lastTitle = m_title;
m_lastPart = m_part;
m_lastStill = m_still;
uint32_t pos = 0;
uint32_t length = 0;
uint32_t stillTimer = dvdnav_get_next_still_flag(m_dvdnav);
m_still = 0;
m_titleParts = 0;
dvdnav_current_title_info(m_dvdnav, &m_title, &m_part);
dvdnav_get_number_of_parts(m_dvdnav, m_title, &m_titleParts);
dvdnav_get_position(m_dvdnav, &pos, &length);
dvdnav_get_angle_info(m_dvdnav, &m_currentAngle, &m_currentTitleAngleCount);
if (m_title != m_lastTitle)
{
// Populate the chapter list for this title, used in the OSD menu
GetChapterTimes(m_title);
}
m_titleLength = length * DVD_BLOCK_SIZE;
if (!m_seeking)
m_cellstartPos = GetReadPosition();
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("---- DVDNAV_CELL_CHANGE - Cell #%1 Menu %2 Length %3")
.arg(cell_event->cellN).arg(m_inMenu ? "Yes" : "No")
.arg(static_cast<double>(cell_event->cell_length) / 90000.0, 0, 'f', 1));
QString still = stillTimer ? ((stillTimer < 0xff) ?
QString("Stillframe: %1 seconds").arg(stillTimer) :
QString("Infinite stillframe")) :
QString("Length: %1 seconds")
.arg(static_cast<double>(m_pgcLength) / 90000.0, 0, 'f', 1);
if (m_title == 0)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Menu #%1 %2")
.arg(m_part).arg(still));
}
else
{
LOG(VB_PLAYBACK, LOG_INFO,
LOC + QString("Title #%1: %2 Part %3 of %4")
.arg(m_title).arg(still).arg(m_part).arg(m_titleParts));
}
// wait unless it is a transition from one normal video cell to
// another or the same menu id
if ((m_title != m_lastTitle) &&
!((m_title == 0 && m_lastTitle == 0) && (m_part == m_lastPart)))
{
WaitForPlayer();
}
// Make sure the still frame timer is reset.
if (m_parent)
m_parent->SetStillFrameTimeout(0);
// clear menus/still frame selections
m_lastvobid = m_vobid;
m_lastcellid = m_cellid;
m_lastButtonSeenInCell = m_buttonSeenInCell;
m_buttonSelected = false;
m_vobid = m_cellid = 0;
m_cellRepeated = false;
m_buttonSeenInCell = false;
IncrementButtonVersion
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// new colour lookup table for subtitles/menu buttons
case DVDNAV_SPU_CLUT_CHANGE:
{
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + "DVDNAV_SPU_CLUT_CHANGE");
// store the new clut
// m_clut = std::to_array(blockBuf); // C++20
std::copy(blockBuf, blockBuf + 16 * sizeof(uint32_t),
m_clut.data());
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// new Sub-picture Unit stream (subtitles/menu buttons)
case DVDNAV_SPU_STREAM_CHANGE:
{
// get event details
auto* spu = reinterpret_cast<dvdnav_spu_stream_change_event_t*>(blockBuf);
// clear any existing subs/buttons
IncrementButtonVersion
// not sure
if (m_autoselectsubtitle)
m_curSubtitleTrack = dvdnav_get_active_spu_stream(m_dvdnav);
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("DVDNAV_SPU_STREAM_CHANGE: "
"physicalwide %1, physicalletterbox %2, "
"physicalpanscan %3, currenttrack %4")
.arg(spu->physical_wide).arg(spu->physical_letterbox)
.arg(spu->physical_pan_scan).arg(m_curSubtitleTrack));
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// the audio stream changed
case DVDNAV_AUDIO_STREAM_CHANGE:
{
// get event details
auto* audio = reinterpret_cast<dvdnav_audio_stream_change_event_t*>(blockBuf);
// retrieve the new track
int new_track = GetAudioTrackNum(static_cast<uint>(audio->physical));
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("DVDNAV_AUDIO_STREAM_CHANGE: old %1 new %2, physical %3, logical %4")
.arg(m_curAudioTrack).arg(new_track)
.arg(audio->physical).arg(audio->logical));
// tell the decoder to reset the audio streams if necessary
if (new_track != m_curAudioTrack)
{
m_curAudioTrack = new_track;
m_audioStreamsChanged = true;
}
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// navigation packet
case DVDNAV_NAV_PACKET:
{
QMutexLocker lock(&m_seekLock);
bool lastInMenu = m_inMenu;
// retrieve the latest Presentation Control and
// Data Search Information structures
pci_t *pci = dvdnav_get_current_nav_pci(m_dvdnav);
dsi_t *dsi = dvdnav_get_current_nav_dsi(m_dvdnav);
if (pci == nullptr || dsi == nullptr)
{
// Something has gone horribly wrong if this happens
LOG(VB_GENERAL, LOG_ERR, LOC + QString("DVDNAV_NAV_PACKET - Error retrieving DVD data structures - dsi 0x%1, pci 0x%2")
.arg(reinterpret_cast<uint64_t>(dsi), 0, 16)
.arg(reinterpret_cast<uint64_t>(pci), 0, 16));
}
else
{
// If the start PTS of this block is not the
// same as the end PTS of the last block,
// we've got a timestamp discontinuity
int64_t diff = static_cast<int64_t>(pci->pci_gi.vobu_s_ptm) - m_endPts;
if (diff != 0)
{
if (!reprocessing && !m_skipstillorwait)
{
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("PTS discontinuity - waiting for decoder: this %1, last %2, diff %3")
.arg(pci->pci_gi.vobu_s_ptm).arg(m_endPts).arg(diff));
m_processState = PROCESS_WAIT;
break;
}
m_timeDiff += diff;
}
m_endPts = pci->pci_gi.vobu_e_ptm;
m_inMenu = (pci->hli.hl_gi.btn_ns > 0);
if (m_inMenu && m_seeking && (dsi->synci.sp_synca[0] & 0x80000000) &&
!m_buttonExists)
{
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("Jumped into middle of menu: lba %1, dest %2")
.arg(pci->pci_gi.nv_pck_lbn)
.arg(pci->pci_gi.nv_pck_lbn - (dsi->synci.sp_synca[0] & 0x7fffffff)));
// We're in a menu, the subpicture packets are somewhere behind us
// and we've not decoded any subpicture.
// That probably means we've jumped into the middle of a menu.
// We'd better jump back to get the subpicture packet(s) otherwise
// there's no menu highlight to show.
m_seeking = false;
dvdnav_sector_search(m_dvdnav, pci->pci_gi.nv_pck_lbn - (dsi->synci.sp_synca[0] & 0x7fffffff), SEEK_SET);
}
else
{
pci_t pci_copy = *pci;
pci_copy.pci_gi.vobu_s_ptm = AdjustTimestamp(pci->pci_gi.vobu_s_ptm);
pci_copy.pci_gi.vobu_e_ptm = AdjustTimestamp(pci->pci_gi.vobu_e_ptm);
if (pci->pci_gi.vobu_se_e_ptm != 0)
pci_copy.pci_gi.vobu_se_e_ptm = AdjustTimestamp(pci->pci_gi.vobu_se_e_ptm);
QMutexLocker contextLocker(&m_contextLock);
if (m_context)
m_context->DecrRef();
m_context = new MythDVDContext(*dsi, pci_copy);
if (m_inMenu != lastInMenu)
{
if (m_inMenu)
{
m_autoselectsubtitle = true;
MythUIHelper::RestoreScreensaver();
}
else
{
MythUIHelper::DisableScreensaver();
}
}
// if we are in a looping menu, we don't want to reset the
// selected button when we restart
m_vobid = dsi->dsi_gi.vobu_vob_idn;
m_cellid = dsi->dsi_gi.vobu_c_idn;
if ((m_lastvobid == m_vobid) && (m_lastcellid == m_cellid)
&& m_lastButtonSeenInCell)
{
m_cellRepeated = true;
}
// update our status
m_currentTime = dvdnav_get_current_time(m_dvdnav);
m_currentpos = GetReadPosition();
if (m_seeking)
{
int relativetime = static_cast<int>((m_seektime - m_currentTime) / 90000);
if (abs(relativetime) <= 1)
{
m_seeking = false;
m_seektime = 0;
}
else
{
dvdnav_relative_time_search(m_dvdnav, relativetime * 2);
}
}
// update the button stream number if this is the
// first NAV pack containing button information
if ( (pci->hli.hl_gi.hli_ss & 0x03) == 0x01 )
{
m_buttonStreamID = 32;
int aspect = dvdnav_get_video_aspect(m_dvdnav);
// workaround where dvd menu is
// present in VTS_DOMAIN. dvdnav adds 0x80 to stream id
// proper fix should be put in dvdnav sometime
int8_t spustream = dvdnav_get_active_spu_stream(m_dvdnav) & 0x7f;
if (aspect != 0 && spustream > 0)
m_buttonStreamID += spustream;
m_buttonSeenInCell = true;
}
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("DVDNAV_NAV_PACKET - time:%1, lba:%2, vob:%3, cell:%4, seeking:%5, seektime:%6")
.arg(m_context->GetStartPTS())
.arg(m_context->GetLBA())
.arg(m_vobid)
.arg(m_cellid)
.arg(m_seeking)
.arg(m_seektime));
if (!m_seeking)
{
memcpy(dest + offset, blockBuf, DVD_BLOCK_SIZE);
tot += DVD_BLOCK_SIZE;
}
}
}
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
case DVDNAV_HOP_CHANNEL:
{
if (!reprocessing && !m_skipstillorwait)
{
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + "DVDNAV_HOP_CHANNEL - waiting");
m_processState = PROCESS_WAIT;
break;
}
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + "DVDNAV_HOP_CHANNEL");
WaitForPlayer();
}
break;
// no op
case DVDNAV_NOP:
break;
// new Video Title Set - aspect ratio/letterboxing
case DVDNAV_VTS_CHANGE:
{
// retrieve event details
auto* vts = reinterpret_cast<dvdnav_vts_change_event_t*>(blockBuf);
// update player
int aspect = dvdnav_get_video_aspect(m_dvdnav);
if (aspect == 2) // 4:3
m_forcedAspect = 4.0F / 3.0F;
else if (aspect == 3) // 16:9
m_forcedAspect = 16.0F / 9.0F;
else
m_forcedAspect = -1;
int permission = dvdnav_get_video_scale_permission(m_dvdnav);
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("DVDNAV_VTS_CHANGE: old_vtsN %1, new_vtsN %2, "
"aspect %3, perm %4")
.arg(vts->old_vtsN).arg(vts->new_vtsN)
.arg(aspect).arg(permission));
// trigger a rescan of the audio streams
if ((vts->old_vtsN != vts->new_vtsN) ||(vts->old_domain != vts->new_domain))
m_audioStreamsChanged = true;
// Make sure we know we're not staying in the
// same cell (same vobid/cellid values can
// occur in every VTS)
m_lastvobid = m_vobid = 0;
m_lastcellid = m_cellid = 0;
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// menu button
case DVDNAV_HIGHLIGHT:
{
// retrieve details
auto* highlight = reinterpret_cast<dvdnav_highlight_event_t*>(blockBuf);
// update the current button
m_menuBtnLock.lock();
DVDButtonUpdate(false);
IncrementButtonVersion
m_menuBtnLock.unlock();
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("DVDNAV_HIGHLIGHT: display %1, palette %2, "
"sx %3, sy %4, ex %5, ey %6, pts %7, buttonN %8")
.arg(highlight->display).arg(highlight->palette)
.arg(highlight->sx).arg(highlight->sy)
.arg(highlight->ex).arg(highlight->ey)
.arg(highlight->pts).arg(highlight->buttonN));
// release buffer
if (blockBuf != m_dvdBlockWriteBuf.data())
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// dvd still frame
case DVDNAV_STILL_FRAME:
{
// retrieve still frame details (length)
auto* still = reinterpret_cast<dvdnav_still_event_t*>(blockBuf);
if (!reprocessing && !m_skipstillorwait)
{
if (m_still != still->length)
{
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("DVDNAV_STILL_FRAME (%1) - waiting")
.arg(still->length));
}
m_processState = PROCESS_WAIT;
}
else
{
// pause a little as the dvdnav VM will continue to return
// this event until it has been skipped
m_rwLock.unlock();
usleep(10000);
m_rwLock.lockForWrite();