codec system rework

Codecs are now much cleaner and thread safe by design.

app/project/item/footage/audiostream.cpp

@@ -66,38 +66,6 @@ void AudioStream::set_sample_rate(const int &sample_rate)
   sample_rate_ = sample_rate;
 }
 
-bool AudioStream::try_start_conforming(const AudioParams &params)
-{
-  QMutexLocker locker(proxy_access_lock());
-
-  if (!currently_conforming_.contains(params)
-      && !conformed_.contains(params)) {
-    currently_conforming_.append(params);
-    return true;
-  }
-
-  return false;
-}
-
-bool AudioStream::has_conformed_version(const AudioParams &params)
-{
-  QMutexLocker locker(proxy_access_lock());
-
-  return conformed_.contains(params);
-}
-
-void AudioStream::append_conformed_version(const AudioParams &params)
-{
-  {
-    QMutexLocker locker(proxy_access_lock());
-
-    currently_conforming_.removeOne(params);
-    conformed_.append(params);
-  }
-
-  emit ConformAppended(params);
-}
-
 QIcon AudioStream::icon() const
 {
   return icon::Audio;

app/project/item/footage/audiostream.h

@@ -49,10 +49,6 @@ public:
   const int& sample_rate() const;
   void set_sample_rate(const int& sample_rate);
 
-  bool try_start_conforming(const AudioParams& params);
-  bool has_conformed_version(const AudioParams& params);
-  void append_conformed_version(const AudioParams& params);
-
   virtual QIcon icon() const override;
 
 protected:
@@ -60,18 +56,11 @@ protected:
 
   virtual void SaveCustomParameters(QXmlStreamWriter* writer) const override;
 
-signals:
-  void ConformAppended(OLIVE_NAMESPACE::AudioParams params);
-
 private:
   int channels_;
   uint64_t layout_;
   int sample_rate_;
 
-  QList<AudioParams> conformed_;
-
-  QList<AudioParams> currently_conforming_;
-
 };
 
 using AudioStreamPtr = std::shared_ptr<AudioStream>;

app/project/item/footage/footage.cpp

@@ -308,7 +308,7 @@ bool Footage::CompareFootageToItsFilename(FootagePtr footage)
     } else {
       // Footage may have changed and we'll have to re-probe it. It also may not have, in which
       // case nothing needs to change.
-      ItemPtr item = Decoder::ProbeMedia(footage->project(), footage->filename(), nullptr);
+      ItemPtr item = Decoder::Probe(footage->project(), footage->filename(), nullptr);
 
       if (item && item->type() == footage->type()) {
         // Item is the same type, that's a good sign. Let's look for any differences.