added content based detection for some decoders

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@2502 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 8 insertions, 2 deletions

diff --git a/src/plugins/Input/flac/decoderflacfactory.cpp b/src/plugins/Input/flac/decoderflacfactory.cpp
index 002fe56ee..c1eee4480 100644
--- a/src/plugins/Input/flac/decoderflacfactory.cpp
+++ b/src/plugins/Input/flac/decoderflacfactory.cpp
@@ -41,7 +41,13 @@ bool DecoderFLACFactory::supports(const QString &source) const
 
 bool DecoderFLACFactory::canDecode(QIODevice *input) const
 {
-    Q_UNUSED(input);
+    char buf[36];
+    if (input->peek(buf, 36) != 36)
+        return false;
+    if(!memcmp(buf, "fLaC", 4)) //native flac
+        return true;
+    if(!memcmp(buf, "OggS", 4) && !memcmp(buf + 29, "FLAC", 4)) //ogg flac
+        return true;
     return false;
 }
 
@@ -51,7 +57,7 @@ const DecoderProperties DecoderFLACFactory::properties() const
     properties.name = tr("FLAC Plugin");
     properties.filters << "*.flac" << "*.oga";
     properties.description = tr("FLAC Files");
-    //properties.contentType = ;
+    properties.contentTypes << "audio/x-flac";
     properties.shortName = "flac";
     properties.protocols << "flac";
     properties.hasAbout = true;