figuring out codec context

1 files changed, 12 insertions, 29 deletions

diff --git a/rotord/rotor.cpp b/rotord/rotor.cpp
index 281671e..931bfa9 100644
--- a/rotord/rotor.cpp
+++ b/rotord/rotor.cpp
@@ -263,38 +263,12 @@ Command_response Render_context::session_command(const std::vector<std::string>&
 	return response;
 }
 
-//how to do this?
-//aim - load nodes from xml
-//easily maintain the xml tree
-//be able to save it or print it
-//--if the list of nodes is a flat vector - don't need to store ID with the node - just refer to the index # of the node while loading?
-//--if instead it refers to the index# in the unordered map - can handle deletion etc - have to check if a node exists when linking
-//--also can a node link to one 'later' ? it may have to? in which case there's a 2 step process - 1 load the nodes - 2 link them
-//maybe 
 
 
-// a generic way to create a named node- each node is an object- will be loadable from .so
-// eventually need to figure out to load .sos and enumerate classes
-// in the short term either 
-// - hand logic that recognises nodes and creates inputs etc
-// - not sure how else?
-
-//its a factory?
-//http://stackoverflow.com/questions/4007382/how-to-create-class-objects-dynamically
-//http://www.codeproject.com/Articles/3734/Different-ways-of-implementing-factories
-//http://stackoverflow.com/questions/13292856/create-derived-class-in-base-class-based-on-parameter
-//http://en.wikipedia.org/wiki/Factory_method_pattern
-
-//what is a good way to pass parameters to objects?
-//get all attributes of node and pass them as creation parameters?
-//could just pass them all as strings, let the object choose what to do itself?
-//YES
 
 //http://blog.tomaka17.com/2012/03/libavcodeclibavformat-tutorial/
 //great to use c++11 features
 
-
-
 bool Render_context::load_audio(string &filename,vector<base_audio_processor*> processors){
 	//load audio data from file
 	//what's the best way to use this? the model is background processing, and we want to update a progress bar
@@ -336,12 +310,13 @@ bool Render_context::load_audio(string &filename,vector<base_audio_processor*> p
 	}
 	
 	// getting the required codec structure
-	const auto codec = avcodec_find_decoder(stream->codec->codec_id);
+	const auto codec = avcodec_find_decoder(stream->codec->codec_id); //returns AVCodec*
 	if (codec == nullptr) {
 		cerr <<"Rotor: Audio codec not available"<< endl;
 		return false;
 	}
-
+	
+	//AVCodecContext??  avFormat->streams[i]->codec 
 	
 	// allocating a structure
 	std::shared_ptr<AVCodecContext> audioCodec(avcodec_alloc_context3(codec), [](AVCodecContext* c) { avcodec_close(c); av_free(c); });
@@ -360,6 +335,10 @@ bool Render_context::load_audio(string &filename,vector<base_audio_processor*> p
 	}
 	*/
 	
+	//avcodec.h line 1026
+	
+	cerr << "audio codec context -  sample rate: "<< audioCodec->sample_rate <<" ,channels: "<<audioCodec->channels<<" ,sample format: "<<audioCodec->sample_fmt<<endl;
+	
 	Packet packet(avFormat.get());
 	if (packet.packet.data == nullptr) {
 		//done
@@ -376,10 +355,13 @@ bool Render_context::load_audio(string &filename,vector<base_audio_processor*> p
 	std::shared_ptr<AVFrame> avFrame(avcodec_alloc_frame(), &av_free);
 
 	// the current packet of data
-	Packet packet;
+	//Packet packet;
 	// data in the packet of data already processed
 	size_t offsetInData = 0;
+	
+	
 
+	/*
 	// the decoding loop, running until EOF
 	while (true) {
 		// reading a packet using libavformat
@@ -414,6 +396,7 @@ bool Render_context::load_audio(string &filename,vector<base_audio_processor*> p
 			std::this_thread::sleep(std::chrono::milliseconds(msToWait));
 		}
 	}
+	*/
 
 	return true;
 }