X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Futil.cc;h=1f5b29101de78c7657a2341623590eed7b3ad92f;hb=a5f9f8163ecb38a140cf623e141bea1d96866fe5;hp=0ce538cdff2429fbd4f571a57e14e292faddef8e;hpb=fc4956d144ed0869fe2fa1737adc21104bb47836;p=dcpomatic.git

diff --git a/src/lib/util.cc b/src/lib/util.cc
index 0ce538cdf..1f5b29101 100644
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -36,6 +36,7 @@
 #include "digester.h"
 #include "audio_processor.h"
 #include "compose.hpp"
+#include "audio_buffers.h"
 #include <dcp/locale_convert.h>
 #include <dcp/util.h>
 #include <dcp/raw_convert.h>
@@ -126,6 +127,22 @@ seconds_to_hms (int s)
 	return buffer;
 }
 
+string
+time_to_hmsf (DCPTime time, Frame rate)
+{
+	Frame f = time.frames_round (rate);
+	int s = f / rate;
+	f -= (s * rate);
+	int m = s / 60;
+	s -= m * 60;
+	int h = m / 60;
+	m -= h * 60;
+
+	char buffer[64];
+	snprintf (buffer, sizeof(buffer), "%d:%02d:%02d.%d", h, m, s, static_cast<int>(f));
+	return buffer;
+}
+
 /** @param s Number of seconds.
  *  @return String containing an approximate description of s (e.g. "about 2 hours")
  */
@@ -735,3 +752,25 @@ audio_channel_types (list<int> mapped, int channels)
 
 	return make_pair (non_lfe, lfe);
 }
+
+shared_ptr<AudioBuffers>
+remap (shared_ptr<const AudioBuffers> input, int output_channels, AudioMapping map)
+{
+	shared_ptr<AudioBuffers> mapped (new AudioBuffers (output_channels, input->frames()));
+	mapped->make_silent ();
+
+	for (int i = 0; i < map.input_channels(); ++i) {
+		for (int j = 0; j < mapped->channels(); ++j) {
+			if (map.get (i, static_cast<dcp::Channel> (j)) > 0) {
+				mapped->accumulate_channel (
+					input.get(),
+					i,
+					static_cast<dcp::Channel> (j),
+					map.get (i, static_cast<dcp::Channel> (j))
+					);
+			}
+		}
+	}
+
+	return mapped;
+}