Some const correctness.

[dcpomatic.git] / src / lib / trimmer.cc

diff --git a/src/lib/trimmer.cc b/src/lib/trimmer.cc
index 68364e50ad91f8dbbbd4a8e6792b933d439bb32f..39ec44fcb630d2eb250dc4bddeefd8078f3eb524 100644 (file)
--- a/src/lib/trimmer.cc
+++ b/src/lib/trimmer.cc
@@ -56,7 +56,7 @@ Trimmer::Trimmer (
 }
 
 void
-Trimmer::process_video (shared_ptr<Image> image, bool same, shared_ptr<Subtitle> sub)
+Trimmer::process_video (shared_ptr<const Image> image, bool same, shared_ptr<Subtitle> sub)
 {
        if (_video_in >= _video_start && _video_in <= _video_end) {
                Video (image, same, sub);
@@ -66,7 +66,7 @@ Trimmer::process_video (shared_ptr<Image> image, bool same, shared_ptr<Subtitle>
 }
 
 void
-Trimmer::process_audio (shared_ptr<AudioBuffers> audio)
+Trimmer::process_audio (shared_ptr<const AudioBuffers> audio)
 {
        int64_t offset = _audio_start - _audio_in;
        if (offset > audio->frames()) {
@@ -91,8 +91,10 @@ Trimmer::process_audio (shared_ptr<AudioBuffers> audio)
        _audio_in += audio->frames ();
        
        if (offset != 0 || length != audio->frames ()) {
-               audio->move (offset, 0, length);
-               audio->set_frames (length);
+               shared_ptr<AudioBuffers> copy (new AudioBuffers (audio));
+               copy->move (offset, 0, length);
+               copy->set_frames (length);
+               audio = copy;
        }
        
        Audio (audio);