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Fix bugs 419 and 421 by faulting to libsndfile/ffmpeg on fail. Patch by David Wallace

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This commit is contained in:
mchinen 2011-08-01 20:32:55 +00:00
parent 7d5ec26abe
commit a4472bc0c5
1 changed files with 38 additions and 5 deletions
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43
src/import/Import.cpp
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@ -420,6 +420,16 @@ int Importer::Import(wxString fName,
// Add all plugins that support the extension
importPluginNode = mImportPluginList->GetFirst();
// Here we rely on the fact that the first plugin in mImportPluginList is libsndfile.
// We want to save this for later insertion ahead of libmad, if libmad supports the extension.
// The order of plugins in mImportPluginList is determined by the Importer constructor alone and
// is not changed by user selection overrides or any other mechanism, but we include an assert
// in case subsequent code revisions to the constructor should break this assumption that
// libsndfile is first.
ImportPlugin *libsndfilePlugin = importPluginNode->GetData();
wxASSERT(libsndfilePlugin->GetPluginStringID().IsSameAs(wxT("libsndfile")));
while (importPluginNode)
{
ImportPlugin *plugin = importPluginNode->GetData();
@ -428,6 +438,23 @@ int Importer::Import(wxString fName,
{
if (plugin->SupportsExtension(extension))
{
// If libmad is accidentally fed a wav file which has been incorrectly
// given an .mp3 extension then it can choke on the contents and crash.
// To avoid this, put libsndfile ahead of libmad in the lists created for
// mp3 files, or for any of the extensions supported by libmad.
// A genuine .mp3 file will first fail an attempted import with libsndfile
// but then get processed as desired by libmad.
// But a wav file which bears an incorrect .mp3 extension will be successfully
// processed by libsndfile and thus avoid being submitted to libmad.
if (plugin->GetPluginStringID().IsSameAs(wxT("libmad")))
{
// Make sure libsndfile is not already in the list
if (importPlugins.Find(libsndfilePlugin) == NULL)
{
wxLogDebug(wxT("Appending %s"),libsndfilePlugin->GetPluginStringID().c_str());
importPlugins.Append(libsndfilePlugin);
}
}
wxLogDebug(wxT("Appending %s"),plugin->GetPluginStringID().c_str());
importPlugins.Append(plugin);
}
@ -436,16 +463,22 @@ int Importer::Import(wxString fName,
importPluginNode = importPluginNode->GetNext();
}
// Add all remaining plugins
// Add remaining plugins, except for libmad, which should not be used as a fallback for anything.
// Otherwise, if FFmpeg (libav) has not been installed, libmad will still be there near the
// end of the preference list importPlugins, where it will claim success importing FFmpeg file
// formats unsuitable for it, and produce distorted results.
importPluginNode = mImportPluginList->GetFirst();
while (importPluginNode)
{
ImportPlugin *plugin = importPluginNode->GetData();
// Make sure its not already in the list
if (importPlugins.Find(plugin) == NULL)
if (!(plugin->GetPluginStringID().IsSameAs(wxT("libmad"))))
{
wxLogDebug(wxT("Appending %s"),plugin->GetPluginStringID().c_str());
importPlugins.Append(plugin);
// Make sure its not already in the list
if (importPlugins.Find(plugin) == NULL)
{
wxLogDebug(wxT("Appending %s"),plugin->GetPluginStringID().c_str());
importPlugins.Append(plugin);
}
}
importPluginNode = importPluginNode->GetNext();