int LayoutScale::Process(const vector<string>& args)
{
if (args.size() != 8)
throw LayoutScaleArgsErr();
auto_ptr<TLayParseLayout> sourceLayout(TLayParseLayout::Parse(args[2]));
int sourceWidth = CdlTkUtil::ParseInt(args[3]);
int sourceHeight = CdlTkUtil::ParseInt(args[4]);
string destLayout = args[5];
int destWidth = CdlTkUtil::ParseInt(args[6]);
int destHeight = CdlTkUtil::ParseInt(args[7]);
LayoutScale scale(*sourceLayout, sourceWidth, sourceHeight, destLayout, destWidth, destHeight);
scale.Run();
return 0;
}
CCoreAudioMixMap *CCoreAudioMixMap::CreateMixMap(CAUOutputDevice *audioUnit, AEAudioFormat &format, AudioChannelLayoutTag layoutTag)
{
if (!audioUnit)
return NULL;
AudioStreamBasicDescription fmt;
AudioStreamBasicDescription inputFormat;
// get the stream input format
audioUnit->GetFormatDesc(format, &inputFormat, &fmt);
unsigned int channels = format.m_channelLayout.Count();
CAEChannelInfo channelLayout = format.m_channelLayout;
bool hasLFE = false;
// Convert XBMC input channel layout format to CoreAudio layout format
AudioChannelLayout* pInLayout = (AudioChannelLayout*)malloc(sizeof(AudioChannelLayout) + sizeof(AudioChannelDescription) * channels);
pInLayout->mChannelLayoutTag = kAudioChannelLayoutTag_UseChannelDescriptions;
pInLayout->mChannelBitmap = 0;
pInLayout->mNumberChannelDescriptions = channels;
for (unsigned int chan=0; chan < channels; chan++)
{
AudioChannelDescription* pDesc = &pInLayout->mChannelDescriptions[chan];
// Convert from XBMC channel tag to CoreAudio channel tag
pDesc->mChannelLabel = g_LabelMap[(unsigned int)channelLayout[chan]];
pDesc->mChannelFlags = kAudioChannelFlags_AllOff;
pDesc->mCoordinates[0] = 0.0f;
pDesc->mCoordinates[1] = 0.0f;
pDesc->mCoordinates[2] = 0.0f;
if (pDesc->mChannelLabel == kAudioChannelLabel_LFEScreen)
hasLFE = true;
}
// HACK: Fix broken channel layouts coming from some aac sources
// that include rear channel but no side channels.
// 5.1 streams should include front and side channels.
// Rear channels are added by 6.1 and 7.1, so any 5.1
// source that claims to have rear channels is wrong.
if (inputFormat.mChannelsPerFrame == 6 && hasLFE)
{
// Check for 5.1 configuration (as best we can without getting too silly)
for (unsigned int chan=0; chan < inputFormat.mChannelsPerFrame; chan++)
{
AudioChannelDescription* pDesc = &pInLayout->mChannelDescriptions[chan];
if (pDesc->mChannelLabel == kAudioChannelLabel_LeftSurround || pDesc->mChannelLabel == kAudioChannelLabel_RightSurround)
break; // Required condition cannot be true
if (pDesc->mChannelLabel == kAudioChannelLabel_LeftSurroundDirect)
{
// Change [Back Left] to [Side Left]
pDesc->mChannelLabel = kAudioChannelLabel_LeftSurround;
CLog::Log(LOGINFO, "CCoreAudioGraph::CreateMixMap: "
"Detected faulty input channel map...fixing(Back Left-->Side Left)");
}
if (pDesc->mChannelLabel == kAudioChannelLabel_RightSurroundDirect)
{
// Change [Back Left] to [Side Left]
pDesc->mChannelLabel = kAudioChannelLabel_RightSurround;
CLog::Log(LOGINFO, "CCoreAudioGraph::CreateMixMap: "
"Detected faulty input channel map...fixing(Back Right-->Side Right)");
}
}
}
CCoreAudioChannelLayout sourceLayout(*pInLayout);
free(pInLayout);
pInLayout = NULL;
std::string strInLayout;
CLog::Log(LOGDEBUG, "CCoreAudioGraph::CreateMixMap: Source Stream Layout: %s",
CCoreAudioChannelLayout::ChannelLayoutToString(*(AudioChannelLayout*)sourceLayout, strInLayout));
// Get User-Configured (XBMC) Speaker Configuration
AudioChannelLayout guiLayout;
guiLayout.mChannelLayoutTag = layoutTag;
CCoreAudioChannelLayout userLayout(guiLayout);
std::string strUserLayout;
CLog::Log(LOGDEBUG, "CCoreAudioGraph::CreateMixMap: User-Configured Speaker Layout: %s",
CCoreAudioChannelLayout::ChannelLayoutToString(*(AudioChannelLayout*)userLayout, strUserLayout));
// Get OS-Configured (Audio MIDI Setup) Speaker Configuration (Channel Layout)
CCoreAudioChannelLayout deviceLayout;
if (!audioUnit->GetPreferredChannelLayout(deviceLayout))
return NULL;
// When all channels on the output device are unknown take the gui layout
//if(deviceLayout.AllChannelUnknown())
// deviceLayout.CopyLayout(guiLayout);
std::string strOutLayout;
CLog::Log(LOGDEBUG, "CCoreAudioGraph::CreateMixMap: Output Device Layout: %s",
CCoreAudioChannelLayout::ChannelLayoutToString(*(AudioChannelLayout*)deviceLayout, strOutLayout));
// TODO:
// Reconcile the OS and GUI layout configurations. Clamp to the minimum number of speakers
// For each OS-defined output, see if it exists in the GUI configuration
// If it does, add it to the 'union' layout (bitmap?)
// User may have configured 5.1 in GUI, but only 2.0 in OS
// Resulting layout would be {FL, FR}
// User may have configured 2.0 in GUI, and 5.1 in OS
// Resulting layout would be {FL, FR}
// Correct any configuration incompatibilities
//if (CCoreAudioChannelLayout::GetChannelCountForLayout(guiLayout) < CCoreAudioChannelLayout::GetChannelCountForLayout(deviceLayout))
// deviceLayout.CopyLayout(guiLayout);
// TODO: Skip matrix mixer if input/output are compatible
AudioChannelLayout* layoutCandidates[] = {(AudioChannelLayout*)deviceLayout, (AudioChannelLayout*)userLayout, NULL};
// Try to construct a mapping matrix for the mixer.
// Work through the layout candidates and see if any will work
CCoreAudioMixMap *mixMap = new CCoreAudioMixMap();
for (AudioChannelLayout** pLayout = layoutCandidates; *pLayout != NULL; pLayout++)
{
mixMap->Rebuild(*sourceLayout, **pLayout);
if (mixMap->IsValid())
break;
}
return mixMap;
}
