/// @brief Constructor
/// @param _filename
///
AvisynthAudioProvider::AvisynthAudioProvider(wxString filename)
: filename(filename)
{
try {
AVSValue script;
wxMutexLocker lock(avs_wrapper.GetMutex());
wxFileName fn(filename);
if (!fn.FileExists())
throw agi::FileNotFoundError(STD_STR(filename));
IScriptEnvironment *env = avs_wrapper.GetEnv();
// Include
if (filename.EndsWith(".avs")) {
char *fname = env->SaveString(fn.GetShortPath().mb_str(csConvLocal));
script = env->Invoke("Import", fname);
}
// Use DirectShowSource
else {
const char * argnames[3] = { 0, "video", "audio" };
AVSValue args[3] = { env->SaveString(fn.GetShortPath().mb_str(csConvLocal)), false, true };
// Load DirectShowSource.dll from app dir if it exists
wxFileName dsspath(StandardPaths::DecodePath("?data/DirectShowSource.dll"));
if (dsspath.FileExists()) {
env->Invoke("LoadPlugin",env->SaveString(dsspath.GetShortPath().mb_str(csConvLocal)));
}
// Load audio with DSS if it exists
if (env->FunctionExists("DirectShowSource")) {
script = env->Invoke("DirectShowSource", AVSValue(args,3),argnames);
}
// Otherwise fail
else {
throw agi::AudioProviderOpenError("No suitable audio source filter found. Try placing DirectShowSource.dll in the Aegisub application directory.", 0);
}
}
LoadFromClip(script);
}
catch (AvisynthError &err) {
std::string errmsg(err.msg);
if (errmsg.find("filter graph manager won't talk to me") != errmsg.npos)
throw agi::AudioDataNotFoundError("Avisynth error: " + errmsg, 0);
else
throw agi::AudioProviderOpenError("Avisynth error: " + errmsg, 0);
}
}
AVSValue AvisynthVideoProvider::Open(agi::fs::path const& filename) {
IScriptEnvironment *env = avs.GetEnv();
char *videoFilename = env->SaveString(agi::fs::ShortName(filename).c_str());
// Avisynth file, just import it
if (agi::fs::HasExtension(filename, "avs")) {
LOG_I("avisynth/video") << "Opening .avs file with Import";
decoder_name = "Avisynth/Import";
return env->Invoke("Import", videoFilename);
}
// Open avi file with AviSource
if (agi::fs::HasExtension(filename, "avi")) {
LOG_I("avisynth/video") << "Opening .avi file with AviSource";
try {
const char *argnames[2] = { 0, "audio" };
AVSValue args[2] = { videoFilename, false };
decoder_name = "Avisynth/AviSource";
return env->Invoke("AviSource", AVSValue(args,2), argnames);
}
// On Failure, fallback to DSS
catch (AvisynthError &err) {
LOG_E("avisynth/video") << err.msg;
LOG_I("avisynth/video") << "Failed to open .avi file with AviSource, trying DirectShowSource";
}
}
// Open d2v with mpeg2dec3
if (agi::fs::HasExtension(filename, "d2v") && env->FunctionExists("Mpeg2Dec3_Mpeg2Source")) {
LOG_I("avisynth/video") << "Opening .d2v file with Mpeg2Dec3_Mpeg2Source";
auto script = env->Invoke("Mpeg2Dec3_Mpeg2Source", videoFilename);
decoder_name = "Avisynth/Mpeg2Dec3_Mpeg2Source";
//if avisynth is 2.5.7 beta 2 or newer old mpeg2decs will crash without this
if (env->FunctionExists("SetPlanarLegacyAlignment")) {
AVSValue args[2] = { script, true };
script = env->Invoke("SetPlanarLegacyAlignment", AVSValue(args,2));
}
return script;
}
// If that fails, try opening it with DGDecode
if (agi::fs::HasExtension(filename, "d2v") && env->FunctionExists("DGDecode_Mpeg2Source")) {
LOG_I("avisynth/video") << "Opening .d2v file with DGDecode_Mpeg2Source";
decoder_name = "DGDecode_Mpeg2Source";
return env->Invoke("Avisynth/Mpeg2Source", videoFilename);
//note that DGDecode will also have issues like if the version is too
// ancient but no sane person would use that anyway
}
if (agi::fs::HasExtension(filename, "d2v") && env->FunctionExists("Mpeg2Source")) {
LOG_I("avisynth/video") << "Opening .d2v file with other Mpeg2Source";
AVSValue script = env->Invoke("Mpeg2Source", videoFilename);
decoder_name = "Avisynth/Mpeg2Source";
//if avisynth is 2.5.7 beta 2 or newer old mpeg2decs will crash without this
if (env->FunctionExists("SetPlanarLegacyAlignment"))
script = env->Invoke("SetPlanarLegacyAlignment", script);
return script;
}
// Try loading DirectShowSource2
if (!env->FunctionExists("dss2")) {
auto dss2path(config::path->Decode("?data/avss.dll"));
if (agi::fs::FileExists(dss2path))
env->Invoke("LoadPlugin", env->SaveString(agi::fs::ShortName(dss2path).c_str()));
}
// If DSS2 loaded properly, try using it
if (env->FunctionExists("dss2")) {
LOG_I("avisynth/video") << "Opening file with DSS2";
decoder_name = "Avisynth/DSS2";
return env->Invoke("DSS2", videoFilename);
}
// Try DirectShowSource
// Load DirectShowSource.dll from app dir if it exists
auto dsspath(config::path->Decode("?data/DirectShowSource.dll"));
if (agi::fs::FileExists(dsspath))
env->Invoke("LoadPlugin", env->SaveString(agi::fs::ShortName(dsspath).c_str()));
// Then try using DSS
if (env->FunctionExists("DirectShowSource")) {
const char *argnames[3] = { 0, "video", "audio" };
AVSValue args[3] = { videoFilename, true, false };
decoder_name = "Avisynth/DirectShowSource";
warning = "Warning! The file is being opened using Avisynth's DirectShowSource, which has unreliable seeking. Frame numbers might not match the real number. PROCEED AT YOUR OWN RISK!";
LOG_I("avisynth/video") << "Opening file with DirectShowSource";
return env->Invoke("DirectShowSource", AVSValue(args,3), argnames);
}
// Failed to find a suitable function
LOG_E("avisynth/video") << "DSS function not found";
throw VideoNotSupported("No function suitable for opening the video found");
}