1 files changed, 73 insertions, 0 deletions
diff --git a/rhimport/normalizer.go b/rhimport/normalizer.go
new file mode 100644
index 0000000..3730929
--- /dev/null
+++ b/rhimport/normalizer.go
@@ -0,0 +1,73 @@
+//
+//  rhimportd
+//
+//  The Radio Helsinki Rivendell Import Daemon
+//
+//
+//  Copyright (C) 2015-2016 Christian Pointner <equinox@helsinki.at>
+//
+//  This file is part of rhimportd.
+//
+//  rhimportd is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  any later version.
+//
+//  rhimportd is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with rhimportd. If not, see <http://www.gnu.org/licenses/>.
+//
+
+package rhimport
+
+import (
+	"os"
+)
+
+func NormalizeFile(ctx *Context) (err error) {
+	if ctx.LoudnessCorr == 0.0 {
+		rhdl.Println("NormalizeFile: skipping normalization since the gain = 0.0dB")
+		if ctx.ProgressCallBack != nil {
+			if keep := ctx.ProgressCallBack(2, "normalizing", 1.0, 1.0, ctx.ProgressCallBackData); !keep {
+				ctx.ProgressCallBack = nil
+			}
+		}
+		return
+	}
+
+	rhl.Printf("NormalizeFile: using gain = %.2fdB", ctx.LoudnessCorr)
+	ctx.NormalizationLevel = 0 // don't do double normalization
+
+	var src *os.File
+	if src, err = os.Open(ctx.SourceFile); err != nil {
+		return
+	}
+	defer src.Close()
+
+	size := int64(0)
+	if info, err := src.Stat(); err != nil {
+		return err
+	} else {
+		size = info.Size()
+	}
+
+	if ctx.ProgressCallBack != nil {
+		if keep := ctx.ProgressCallBack(2, "normalizing", 0.0, float64(size), ctx.ProgressCallBackData); !keep {
+			ctx.ProgressCallBack = nil
+		}
+	}
+
+	// TODO: call ffmpeg
+
+	if ctx.ProgressCallBack != nil {
+		if keep := ctx.ProgressCallBack(2, "normalizing", float64(size), float64(size), ctx.ProgressCallBackData); !keep {
+			ctx.ProgressCallBack = nil
+		}
+	}
+
+	return
+}