display timecode from BWF etc in SF browser; accels for windows now work (misspelling...

[ardour.git] / libs / ardour / sndfilesource.cc

diff --git a/libs/ardour/sndfilesource.cc b/libs/ardour/sndfilesource.cc
index 3c3798c8abaab4e3b93f240be71961fe189e4ffc..91605049caa4c381554d207bea3dee503220a028 100644 (file)
--- a/libs/ardour/sndfilesource.cc
+++ b/libs/ardour/sndfilesource.cc
@@ -28,7 +28,7 @@
 #include <glibmm/miscutils.h>
 
 #include <ardour/sndfilesource.h>
-
+#include <ardour/sndfile_helpers.h>
 #include <ardour/utils.h>
 
 #include "i18n.h"
@@ -212,7 +212,7 @@ SndFileSource::init (string idstr)
        _capture_end = false;
        file_pos = 0;
 
-       if (destructive()) {
+       if (destructive()) {    
                xfade_buf = new Sample[xfade_frames];
                timeline_position = header_position_offset;
        }
@@ -243,27 +243,14 @@ SndFileSource::open ()
        _broadcast_info = new SF_BROADCAST_INFO;
        memset (_broadcast_info, 0, sizeof (*_broadcast_info));
        
-       /* lookup broadcast info */
-       
-       if (sf_command (sf, SFC_GET_BROADCAST_INFO, _broadcast_info, sizeof (*_broadcast_info)) != SF_TRUE) {
-
-               /* if the file has data but no broadcast info, then clearly, there is no broadcast info */
-
-               if (_length) {
-                       delete _broadcast_info;
-                       _broadcast_info = 0;
-                       _flags = Flag (_flags & ~Broadcast);
-               }
-
-               set_timeline_position (header_position_offset);
+       bool timecode_info_exists;
 
-       } else {
-       
-               /* XXX 64 bit alert: when JACK switches to a 64 bit frame count, this needs to use the high bits
-                  of the time reference.
-               */
+       set_timeline_position (get_timecode_info (sf, _broadcast_info, timecode_info_exists));
 
-               set_timeline_position ( _broadcast_info->time_reference_low );
+       if (!timecode_info_exists) {
+               delete _broadcast_info;
+               _broadcast_info = 0;
+               _flags = Flag (_flags & ~Broadcast);
        }
 
        if (writable()) {
@@ -680,11 +667,15 @@ SndFileSource::set_destructive (bool yn)
 {
        if (yn) {
                _flags = Flag (_flags | Destructive);
+               if (!xfade_buf) {
+                       xfade_buf = new Sample[xfade_frames];
+               }
                clear_capture_marks ();
                timeline_position = header_position_offset;
        } else {
                _flags = Flag (_flags & ~Destructive);
                timeline_position = 0;
+               /* leave xfade buf alone in case we need it again later */
        }
 
        return true;
@@ -889,7 +880,7 @@ SndFileSource::setup_standard_crossfades (nframes_t rate)
 }
 
 void
-SndFileSource::set_timeline_position (nframes_t pos)
+SndFileSource::set_timeline_position (int64_t pos)
 {
        // destructive track timeline postion does not change
        // except at instantion or when header_position_offset 
@@ -899,3 +890,57 @@ SndFileSource::set_timeline_position (nframes_t pos)
                AudioFileSource::set_timeline_position (pos);
        } 
 }
+
+int
+SndFileSource::get_soundfile_info (string path, SoundFileInfo& info, string& error_msg)
+{
+       SNDFILE *sf;
+       SF_INFO sf_info;
+       SF_BROADCAST_INFO binfo;
+       bool timecode_exists;
+
+       sf_info.format = 0; // libsndfile says to clear this before sf_open().
+
+       if ((sf = sf_open ((char*) path.c_str(), SFM_READ, &sf_info)) == 0) { 
+               char errbuf[256];
+               error_msg = sf_error_str (0, errbuf, sizeof (errbuf) - 1);
+               return false;
+       }
+
+       info.samplerate  = sf_info.samplerate;
+       info.channels    = sf_info.channels;
+       info.length      = sf_info.frames;
+       info.format_name = string_compose("Format: %1, %2",
+                                          sndfile_major_format(sf_info.format),
+                                          sndfile_minor_format(sf_info.format));
+
+       memset (&binfo, 0, sizeof (binfo));
+       info.timecode  = get_timecode_info (sf, &binfo, timecode_exists);
+
+       if (!timecode_exists) {
+               info.timecode = 0;
+       }
+       
+       sf_close (sf);
+
+       return true;
+}
+
+int64_t
+SndFileSource::get_timecode_info (SNDFILE* sf, SF_BROADCAST_INFO* binfo, bool& exists)
+{
+       if (sf_command (sf, SFC_GET_BROADCAST_INFO, binfo, sizeof (*binfo)) != SF_TRUE) {
+               exists = false;
+               return (header_position_offset);
+       } 
+       
+       /* XXX 64 bit alert: when JACK switches to a 64 bit frame count, this needs to use the high bits
+          of the time reference.
+       */
+       
+       exists = true;
+       int64_t ret = (uint32_t) binfo->time_reference_high;
+       ret <<= 32;
+       ret |= (uint32_t) binfo->time_reference_low;
+       return ret;
+}