From 6f0f7600e22590b28fc6b0d11a28fa7a42931e20 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Sat, 7 Sep 2013 14:57:23 +0100
Subject: refactoring

---
 rotord/src/graph.cpp | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 62 insertions(+), 2 deletions(-)

(limited to 'rotord/src/graph.cpp')

diff --git a/rotord/src/graph.cpp b/rotord/src/graph.cpp
index 7ca8879..e6c0e3f 100644
--- a/rotord/src/graph.cpp
+++ b/rotord/src/graph.cpp
@@ -1,4 +1,4 @@
-#include "rotor.h"
+#include "graph.h"
 
 using namespace Rotor;
 using Poco::Logger;
@@ -507,4 +507,64 @@ bool Graph::parseXml(string media_path){
 		}
 		loaded=true;
 		return true;
-}
\ No newline at end of file
+}
+bool Graph::load_audio(const string &filename,vector<Audio_processor*> processors){
+	Logger& logger = Logger::get("Rotor");
+	logger.information("Analysing "+filename);
+
+	libav::audioloader loader;
+	loader.setup(filename);
+
+	duration=((float)loader.formatContext->duration)/AV_TIME_BASE;
+
+    int rate = loader.codecContext->sample_rate;
+	int samples = ((loader.formatContext->duration + 5000)*rate)/AV_TIME_BASE; //why 5000 more?
+	int channels= loader.codecContext->channels;
+	int bits = 16; //???why can't we read this loader.codecContext->bits_per_raw_sample;
+
+	for (auto p: processors) {
+		if(!p->init(channels,bits,samples,rate) ){
+			logger.error("ERROR: Audio plugin failed to initialse");
+			return false;
+		}
+	}
+
+	AVFrame* frame=loader.get_frame();
+	int sample_processed=0;
+
+	while (frame)
+	{
+		//now we can pass the data to the processor(s)
+		for (auto p: processors) {
+			p->process_frame(frame->data[0],frame->nb_samples);
+		}
+		sample_processed+=frame->nb_samples;
+		//mutex.lock();
+		progress=((float)sample_processed)/samples; //atomic on 64 bit?
+		//mutex.unlock();
+
+		frame=loader.get_frame();
+	}
+
+	loader.close();
+
+	for (auto p: processors) {
+		p->cleanup();
+		p->print_summary();
+	}
+
+	logger.information("Finished audio analysis");
+	return true;
+}
+bool Graph::load_video(const string &nodeID,const string &filename){
+	//this is a good standard example of how to find
+	//a node of a specific type by ID and do something
+	if (nodes.find(nodeID)!=nodes.end()){
+		if (nodes[nodeID]->type=="video_loader") {
+			if (((Video_loader*)nodes[nodeID])->load(filename)) {
+				return true;
+			}
+		}
+	}
+	return false;
+}
-- 
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