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

diff --git a/libs/ardour/sndfileimportable.cc b/libs/ardour/sndfileimportable.cc
index 3328eddb23e916290822a1a1d10db4f9032fd7a3..f900689f77f804d6032f782fd99a8f3be777c86e 100644 (file)
--- a/libs/ardour/sndfileimportable.cc
+++ b/libs/ardour/sndfileimportable.cc
@@ -1,48 +1,145 @@
-#include "ardour/sndfileimportable.h"
+/*
+    Copyright (C) 2000,2015 Paul Davis
+
+    This program 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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+*/
+
 #include <sndfile.h>
 #include <iostream>
+#include <cstring>
+#include <fcntl.h>
+
+#include <glib.h>
+#include "pbd/gstdio_compat.h"
+
+
+#include "pbd/error.h"
+#include "ardour/sndfileimportable.h"
+
+#include <glibmm/convert.h>
 
 using namespace ARDOUR;
 using namespace std;
 
+/* FIXME: this was copied from sndfilesource.cc, at some point these should be merged */
+int64_t
+SndFileImportableSource::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 0;
+       }
+
+       /* see http://tracker.ardour.org/view.php?id=6208
+        * 0xffffffff 0xfffc5680
+        * seems to be a bug in Presonus Capture (which generated the file)
+        *
+        * still since samplepos_t is a signed int, ignore files that could
+        * lead to negative timestamps for now.
+        */
+
+       if (binfo->time_reference_high & 0x80000000) {
+               char tmp[64];
+               snprintf(tmp, sizeof(tmp), "%x%08x", binfo->time_reference_high, binfo->time_reference_low);
+               PBD::warning << "Invalid Timestamp " << tmp << endmsg;
+               exists = false;
+               return 0;
+       }
+
+       exists = true;
+       /* libsndfile reads eactly 4 bytes for high and low, but
+        * uses "unsigned int" which may or may not be 32 bit little
+        * endian.
+        */
+       int64_t ret = (uint32_t) (binfo->time_reference_high & 0x7fffffff);
+       ret <<= 32;
+       ret |= (uint32_t) (binfo->time_reference_low & 0xffffffff);
+
+       assert(ret >= 0);
+       return ret;
+}
+
 SndFileImportableSource::SndFileImportableSource (const string& path)
-       : in (sf_open (path.c_str(), SFM_READ, &sf_info), sf_close)
 {
+       int fd = g_open (path.c_str (), O_RDONLY, 0444);
+       if (fd == -1) {
+               throw failed_constructor ();
+       }
+       memset(&sf_info, 0 , sizeof(sf_info));
+       in.reset (sf_open_fd (fd, SFM_READ, &sf_info, true), sf_close);
        if (!in) throw failed_constructor();
+
+       SF_BROADCAST_INFO binfo;
+       bool timecode_exists;
+
+       memset (&binfo, 0, sizeof (binfo));
+       timecode = get_timecode_info (in.get(), &binfo, timecode_exists);
+
+       if (!timecode_exists) {
+               timecode = 0;
+       }
 }
 
 SndFileImportableSource::~SndFileImportableSource ()
 {
 }
 
-nframes_t
-SndFileImportableSource::read (Sample* buffer, nframes_t nframes) 
+samplecnt_t
+SndFileImportableSource::read (Sample* buffer, samplecnt_t nframes)
 {
-       nframes_t per_channel = nframes / sf_info.channels;
+       samplecnt_t per_channel = nframes / sf_info.channels;
        per_channel = sf_readf_float (in.get(), buffer, per_channel);
        return per_channel * sf_info.channels;
 }
 
-uint
-SndFileImportableSource::channels () const 
+uint32_t
+SndFileImportableSource::channels () const
 {
        return sf_info.channels;
 }
 
-nframes_t
-SndFileImportableSource::length () const 
+samplecnt_t
+SndFileImportableSource::length () const
 {
-       return sf_info.frames;
+       return (samplecnt_t) sf_info.frames;
 }
 
-nframes_t
-SndFileImportableSource::samplerate() const
+samplecnt_t
+SndFileImportableSource::samplerate () const
 {
        return sf_info.samplerate;
 }
 
 void
-SndFileImportableSource::seek (nframes_t /*pos*/)
+SndFileImportableSource::seek (samplepos_t /*pos*/)
 {
        sf_seek (in.get(), 0, SEEK_SET);
 }
+
+samplepos_t
+SndFileImportableSource::natural_position () const
+{
+       return (samplepos_t) timecode;
+}
+
+bool
+SndFileImportableSource::clamped_at_unity () const
+{
+       int const type = sf_info.format & SF_FORMAT_TYPEMASK;
+       int const sub = sf_info.format & SF_FORMAT_SUBMASK;
+       /* XXX: this may not be the full list of formats that are unclamped */
+       return (sub != SF_FORMAT_FLOAT && sub != SF_FORMAT_DOUBLE && type != SF_FORMAT_OGG);
+}