| 1805 |
return successResult(); |
return successResult(); |
| 1806 |
} |
} |
| 1807 |
|
|
| 1808 |
|
// change_play_pos() function |
| 1809 |
|
|
| 1810 |
|
InstrumentScriptVMFunction_change_play_pos::InstrumentScriptVMFunction_change_play_pos(InstrumentScriptVM* parent) |
| 1811 |
|
: m_vm(parent) |
| 1812 |
|
{ |
| 1813 |
|
} |
| 1814 |
|
|
| 1815 |
|
VMFnResult* InstrumentScriptVMFunction_change_play_pos::exec(VMFnArgs* args) { |
| 1816 |
|
const ScriptID id = args->arg(0)->asInt()->evalInt(); |
| 1817 |
|
if (!id) { |
| 1818 |
|
wrnMsg("change_play_pos(): note ID for argument 1 may not be zero"); |
| 1819 |
|
return successResult(); |
| 1820 |
|
} |
| 1821 |
|
if (!id.isNoteID()) { |
| 1822 |
|
wrnMsg("change_play_pos(): argument 1 is not a note ID"); |
| 1823 |
|
return successResult(); |
| 1824 |
|
} |
| 1825 |
|
|
| 1826 |
|
const int pos = args->arg(1)->asInt()->evalInt(); |
| 1827 |
|
if (pos < 0) { |
| 1828 |
|
wrnMsg("change_play_pos(): playback position of argument 2 may not be negative"); |
| 1829 |
|
return successResult(); |
| 1830 |
|
} |
| 1831 |
|
|
| 1832 |
|
AbstractEngineChannel* pEngineChannel = |
| 1833 |
|
static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel); |
| 1834 |
|
|
| 1835 |
|
NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() ); |
| 1836 |
|
if (!pNote) return successResult(); |
| 1837 |
|
|
| 1838 |
|
pNote->Override.SampleOffset = pos; |
| 1839 |
|
|
| 1840 |
|
return successResult(); |
| 1841 |
|
} |
| 1842 |
|
|
| 1843 |
// event_status() function |
// event_status() function |
| 1844 |
|
|
| 1845 |
InstrumentScriptVMFunction_event_status::InstrumentScriptVMFunction_event_status(InstrumentScriptVM* parent) |
InstrumentScriptVMFunction_event_status::InstrumentScriptVMFunction_event_status(InstrumentScriptVM* parent) |
| 1911 |
return successResult(); |
return successResult(); |
| 1912 |
} |
} |
| 1913 |
|
|
| 1914 |
|
// abort() function |
| 1915 |
|
|
| 1916 |
|
InstrumentScriptVMFunction_abort::InstrumentScriptVMFunction_abort(InstrumentScriptVM* parent) |
| 1917 |
|
: m_vm(parent) |
| 1918 |
|
{ |
| 1919 |
|
} |
| 1920 |
|
|
| 1921 |
|
VMFnResult* InstrumentScriptVMFunction_abort::exec(VMFnArgs* args) { |
| 1922 |
|
const script_callback_id_t id = args->arg(0)->asInt()->evalInt(); |
| 1923 |
|
if (!id) { |
| 1924 |
|
wrnMsg("abort(): callback ID for argument 1 may not be zero"); |
| 1925 |
|
return successResult(); |
| 1926 |
|
} |
| 1927 |
|
|
| 1928 |
|
AbstractEngineChannel* pEngineChannel = |
| 1929 |
|
static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel); |
| 1930 |
|
|
| 1931 |
|
RTList<ScriptEvent>::Iterator itCallback = pEngineChannel->ScriptCallbackByID(id); |
| 1932 |
|
if (!itCallback) return successResult(); // ignore if callback is i.e. not alive anymore |
| 1933 |
|
|
| 1934 |
|
itCallback->execCtx->signalAbort(); |
| 1935 |
|
|
| 1936 |
|
return successResult(); |
| 1937 |
|
} |
| 1938 |
|
|
| 1939 |
|
// fork() function |
| 1940 |
|
|
| 1941 |
|
InstrumentScriptVMFunction_fork::InstrumentScriptVMFunction_fork(InstrumentScriptVM* parent) |
| 1942 |
|
: m_vm(parent) |
| 1943 |
|
{ |
| 1944 |
|
} |
| 1945 |
|
|
| 1946 |
|
VMFnResult* InstrumentScriptVMFunction_fork::exec(VMFnArgs* args) { |
| 1947 |
|
// check if this is actually the parent going to fork, or rather one of |
| 1948 |
|
// the children which is already forked |
| 1949 |
|
if (m_vm->m_event->forkIndex != 0) { // this is the entry point for a child ... |
| 1950 |
|
int forkResult = m_vm->m_event->forkIndex; |
| 1951 |
|
// reset so that this child may i.e. also call fork() later on |
| 1952 |
|
m_vm->m_event->forkIndex = 0; |
| 1953 |
|
return successResult(forkResult); |
| 1954 |
|
} |
| 1955 |
|
|
| 1956 |
|
// if we are here, then this is the parent, so we must fork this parent |
| 1957 |
|
|
| 1958 |
|
const int n = |
| 1959 |
|
(args->argsCount() >= 1) ? args->arg(0)->asInt()->evalInt() : 1; |
| 1960 |
|
const bool bAutoAbort = |
| 1961 |
|
(args->argsCount() >= 2) ? args->arg(1)->asInt()->evalInt() : true; |
| 1962 |
|
|
| 1963 |
|
if (m_vm->m_event->countChildHandlers() + n > MAX_FORK_PER_SCRIPT_HANDLER) { |
| 1964 |
|
wrnMsg("fork(): requested amount would exceed allowed limit per event handler"); |
| 1965 |
|
return successResult(-1); |
| 1966 |
|
} |
| 1967 |
|
|
| 1968 |
|
AbstractEngineChannel* pEngineChannel = |
| 1969 |
|
static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel); |
| 1970 |
|
|
| 1971 |
|
if (!pEngineChannel->hasFreeScriptCallbacks(n)) { |
| 1972 |
|
wrnMsg("fork(): global limit of event handlers exceeded"); |
| 1973 |
|
return successResult(-1); |
| 1974 |
|
} |
| 1975 |
|
|
| 1976 |
|
for (int iChild = 0; iChild < n; ++iChild) { |
| 1977 |
|
RTList<ScriptEvent>::Iterator itChild = |
| 1978 |
|
pEngineChannel->forkScriptCallback(m_vm->m_event, bAutoAbort); |
| 1979 |
|
if (!itChild) { // should never happen, otherwise its a bug ... |
| 1980 |
|
errMsg("fork(): internal error while allocating child"); |
| 1981 |
|
return errorResult(-1); // terminate script |
| 1982 |
|
} |
| 1983 |
|
// since both parent, as well all child script execution instances |
| 1984 |
|
// all land in this exect() method, the following is (more or less) |
| 1985 |
|
// the only feature that lets us distinguish the parent and |
| 1986 |
|
// respective children from each other in this exect() method |
| 1987 |
|
itChild->forkIndex = iChild + 1; |
| 1988 |
|
} |
| 1989 |
|
|
| 1990 |
|
return successResult(0); |
| 1991 |
|
} |
| 1992 |
|
|
| 1993 |
} // namespace LinuxSampler |
} // namespace LinuxSampler |
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