Hopefully much cleaner handling of PTS changes under resample.

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

diff --git a/src/lib/resampler.cc b/src/lib/resampler.cc
index cc50724420922440c7e7ba0cb90a6d1d04086524..7bc933fd01b2536da1b8d7f0e70c6a9264d6a6f0 100644 (file)
--- a/src/lib/resampler.cc
+++ b/src/lib/resampler.cc
@@ -27,6 +27,8 @@ extern "C" {
 #include "i18n.h"
 
 using std::cout;
+using std::pair;
+using std::make_pair;
 using boost::shared_ptr;
 
 Resampler::Resampler (int in, int out, int channels)
@@ -61,9 +63,11 @@ Resampler::~Resampler ()
        swr_free (&_swr_context);
 }
 
-shared_ptr<const AudioBuffers>
-Resampler::run (shared_ptr<const AudioBuffers> in)
+pair<shared_ptr<const AudioBuffers>, AudioContent::Frame>
+Resampler::run (shared_ptr<const AudioBuffers> in, AudioContent::Frame frame)
 {
+       AudioContent::Frame const resamp_time = swr_next_pts (_swr_context, frame * _out_rate) / _in_rate;
+               
        /* Compute the resampled frames count and add 32 for luck */
        int const max_resampled_frames = ceil ((double) in->frames() * _out_rate / _in_rate) + 32;
        shared_ptr<AudioBuffers> resampled (new AudioBuffers (_channels, max_resampled_frames));
@@ -77,7 +81,7 @@ Resampler::run (shared_ptr<const AudioBuffers> in)
        }
        
        resampled->set_frames (resampled_frames);
-       return resampled;
+       return make_pair (resampled, resamp_time);
 }      
 
 shared_ptr<const AudioBuffers>