fix crash when copy'ing latent plugins
[ardour.git] / libs / ardour / globals.cc
index 2cd886b03ea9f95858f56da1eef6de3915b90b0b..974247aef57cb08d26daebf280485cee9bc1da8e 100644 (file)
 #include "libardour-config.h"
 #endif
 
+#ifdef interface
+#undef interface
+#endif
+
 #include <cstdio> // Needed so that libraptor (included in lrdf) won't complain
 #include <cstdlib>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/time.h>
+#ifndef PLATFORM_WINDOWS
 #include <sys/resource.h>
+#endif
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
 #include <time.h>
 
+#include <glib.h>
+#include "pbd/gstdio_compat.h"
+
+#ifdef PLATFORM_WINDOWS
+#include <stdio.h> // for _setmaxstdio
+#include <windows.h> // for LARGE_INTEGER
+#endif
+
 #ifdef WINDOWS_VST_SUPPORT
 #include <fst.h>
 #endif
 #include "ardour/audio_unit.h"
 #endif
 
-#ifdef __SSE__
+#if defined(__SSE__) || defined(USE_XMMINTRIN)
 #include <xmmintrin.h>
 #endif
 
 #ifdef check
 #undef check /* stupid Apple and their un-namespaced, generic Carbon macros */
-#endif 
+#endif
 
 #include <glibmm/fileutils.h>
 #include <glibmm/miscutils.h>
 
+#ifdef HAVE_LRDF
 #include <lrdf.h>
+#endif
 
 #include "pbd/cpus.h"
 #include "pbd/error.h"
@@ -64,7 +80,6 @@
 #include "pbd/fpu.h"
 #include "pbd/file_utils.h"
 #include "pbd/enumwriter.h"
-#include "pbd/basename.h"
 
 #include "midi++/port.h"
 #include "midi++/mmc.h"
 #include "ardour/audioregion.h"
 #include "ardour/buffer_manager.h"
 #include "ardour/control_protocol_manager.h"
+#include "ardour/directory_names.h"
+#include "ardour/event_type_map.h"
 #include "ardour/filesystem_paths.h"
 #include "ardour/midi_region.h"
+#include "ardour/midi_ui.h"
 #include "ardour/midiport_manager.h"
 #include "ardour/mix.h"
+#include "ardour/operations.h"
 #include "ardour/panner_manager.h"
 #include "ardour/plugin_manager.h"
+#include "ardour/presentation_info.h"
 #include "ardour/process_thread.h"
 #include "ardour/profile.h"
 #include "ardour/rc_configuration.h"
 #include "ardour/runtime_functions.h"
 #include "ardour/session_event.h"
 #include "ardour/source_factory.h"
+#include "ardour/uri_map.h"
 
 #include "audiographer/routines.h"
 
 #if defined (__APPLE__)
-       #include <Carbon/Carbon.h> // For Gestalt
+#include <CoreFoundation/CoreFoundation.h>
 #endif
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 ARDOUR::RCConfiguration* ARDOUR::Config = 0;
 ARDOUR::RuntimeProfile* ARDOUR::Profile = 0;
@@ -115,9 +136,17 @@ find_peaks_t            ARDOUR::find_peaks = 0;
 apply_gain_to_buffer_t  ARDOUR::apply_gain_to_buffer = 0;
 mix_buffers_with_gain_t ARDOUR::mix_buffers_with_gain = 0;
 mix_buffers_no_gain_t   ARDOUR::mix_buffers_no_gain = 0;
+copy_vector_t                  ARDOUR::copy_vector = 0;
 
 PBD::Signal1<void,std::string> ARDOUR::BootMessage;
+PBD::Signal3<void,std::string,std::string,bool> ARDOUR::PluginScanMessage;
+PBD::Signal1<void,int> ARDOUR::PluginScanTimeout;
 PBD::Signal0<void> ARDOUR::GUIIdle;
+PBD::Signal3<bool,std::string,std::string,int> ARDOUR::CopyConfigurationFiles;
+
+std::vector<std::string> ARDOUR::reserved_io_names;
+
+static bool have_old_configuration_files = false;
 
 namespace ARDOUR {
 extern void setup_enum_writer ();
@@ -135,11 +164,32 @@ setup_hardware_optimization (bool try_optimization)
 
        if (try_optimization) {
 
-               FPU fpu;
+               FPU* fpu = FPU::instance();
 
 #if defined (ARCH_X86) && defined (BUILD_SSE_OPTIMIZATIONS)
 
-               if (fpu.has_sse()) {
+#ifdef PLATFORM_WINDOWS
+               /* We have AVX-optimized code for Windows */
+
+               if (fpu->has_avx()) {
+#else
+               /* AVX code doesn't compile on Linux yet */
+
+               if (false) {
+#endif
+                       info << "Using AVX optimized routines" << endmsg;
+
+                       // AVX SET
+                       compute_peak          = x86_sse_avx_compute_peak;
+                       find_peaks            = x86_sse_avx_find_peaks;
+                       apply_gain_to_buffer  = x86_sse_avx_apply_gain_to_buffer;
+                       mix_buffers_with_gain = x86_sse_avx_mix_buffers_with_gain;
+                       mix_buffers_no_gain   = x86_sse_avx_mix_buffers_no_gain;
+                       copy_vector           = x86_sse_avx_copy_vector;
+
+                       generic_mix_functions = false;
+
+               } else if (fpu->has_sse()) {
 
                        info << "Using SSE optimized routines" << endmsg;
 
@@ -149,23 +199,21 @@ setup_hardware_optimization (bool try_optimization)
                        apply_gain_to_buffer  = x86_sse_apply_gain_to_buffer;
                        mix_buffers_with_gain = x86_sse_mix_buffers_with_gain;
                        mix_buffers_no_gain   = x86_sse_mix_buffers_no_gain;
+                       copy_vector           = default_copy_vector;
 
                        generic_mix_functions = false;
 
                }
 
 #elif defined (__APPLE__) && defined (BUILD_VECLIB_OPTIMIZATIONS)
-               SInt32 sysVersion = 0;
-
-               if (noErr != Gestalt(gestaltSystemVersion, &sysVersion))
-                       sysVersion = 0;
 
-               if (sysVersion >= 0x00001040) { // Tiger at least
+               if (floor (kCFCoreFoundationVersionNumber) > kCFCoreFoundationVersionNumber10_4) { /* at least Tiger */
                        compute_peak           = veclib_compute_peak;
                        find_peaks             = veclib_find_peaks;
                        apply_gain_to_buffer   = veclib_apply_gain_to_buffer;
                        mix_buffers_with_gain  = veclib_mix_buffers_with_gain;
                        mix_buffers_no_gain    = veclib_mix_buffers_no_gain;
+                       copy_vector            = default_copy_vector;
 
                        generic_mix_functions = false;
 
@@ -185,6 +233,7 @@ setup_hardware_optimization (bool try_optimization)
                apply_gain_to_buffer  = default_apply_gain_to_buffer;
                mix_buffers_with_gain = default_mix_buffers_with_gain;
                mix_buffers_no_gain   = default_mix_buffers_no_gain;
+               copy_vector           = default_copy_vector;
 
                info << "No H/W specific optimizations in use" << endmsg;
        }
@@ -196,11 +245,17 @@ setup_hardware_optimization (bool try_optimization)
 static void
 lotsa_files_please ()
 {
+#ifndef PLATFORM_WINDOWS
        struct rlimit rl;
 
        if (getrlimit (RLIMIT_NOFILE, &rl) == 0) {
 
+#ifdef __APPLE__
+                /* See the COMPATIBILITY note on the Apple setrlimit() man page */
+               rl.rlim_cur = min ((rlim_t) OPEN_MAX, rl.rlim_max);
+#else
                rl.rlim_cur = rl.rlim_max;
+#endif
 
                if (setrlimit (RLIMIT_NOFILE, &rl) != 0) {
                        if (rl.rlim_cur == RLIM_INFINITY) {
@@ -216,6 +271,148 @@ lotsa_files_please ()
        } else {
                error << string_compose (_("Could not get system open files limit (%1)"), strerror (errno)) << endmsg;
        }
+#else
+       /* this only affects stdio. 2048 is the maxium possible (512 the default).
+        *
+        * If we want more, we'll have to replaces the POSIX I/O interfaces with
+        * Win32 API calls (CreateFile, WriteFile, etc) which allows for 16K.
+        *
+        * see http://stackoverflow.com/questions/870173/is-there-a-limit-on-number-of-open-files-in-windows
+        * and http://bugs.mysql.com/bug.php?id=24509
+        */
+       int newmax = _setmaxstdio (2048);
+       if (newmax > 0) {
+               info << string_compose (_("Your system is configured to limit %1 to only %2 open files"), PROGRAM_NAME, newmax) << endmsg;
+       } else {
+               error << string_compose (_("Could not set system open files limit. Current limit is %1 open files"), _getmaxstdio)  << endmsg;
+       }
+#endif
+}
+
+static int
+copy_configuration_files (string const & old_dir, string const & new_dir, int old_version)
+{
+       string old_name;
+       string new_name;
+
+       /* ensure target directory exists */
+
+       if (g_mkdir_with_parents (new_dir.c_str(), 0755)) {
+               return -1;
+       }
+
+       if (old_version >= 3) {
+
+               old_name = Glib::build_filename (old_dir, X_("recent"));
+               new_name = Glib::build_filename (new_dir, X_("recent"));
+
+               copy_file (old_name, new_name);
+
+               old_name = Glib::build_filename (old_dir, X_("sfdb"));
+               new_name = Glib::build_filename (new_dir, X_("sfdb"));
+
+               copy_file (old_name, new_name);
+
+               /* can only copy ardour.rc/config - UI config is not compatible */
+
+               /* users who have been using git/nightlies since the last
+                * release of 3.5 will have $CONFIG/config rather than
+                * $CONFIG/ardour.rc. Pick up the newer "old" config file,
+                * to avoid confusion.
+                */
+
+               string old_name = Glib::build_filename (old_dir, X_("config"));
+
+               if (!Glib::file_test (old_name, Glib::FILE_TEST_EXISTS)) {
+                       old_name = Glib::build_filename (old_dir, X_("ardour.rc"));
+               }
+
+               new_name = Glib::build_filename (new_dir, X_("config"));
+
+               copy_file (old_name, new_name);
+
+               /* copy templates and route templates */
+
+               old_name = Glib::build_filename (old_dir, X_("templates"));
+               new_name = Glib::build_filename (new_dir, X_("templates"));
+
+               copy_recurse (old_name, new_name);
+
+               old_name = Glib::build_filename (old_dir, X_("route_templates"));
+               new_name = Glib::build_filename (new_dir, X_("route_templates"));
+
+               copy_recurse (old_name, new_name);
+
+               /* presets */
+
+               old_name = Glib::build_filename (old_dir, X_("presets"));
+               new_name = Glib::build_filename (new_dir, X_("presets"));
+
+               copy_recurse (old_name, new_name);
+
+               /* presets */
+
+               old_name = Glib::build_filename (old_dir, X_("plugin_statuses"));
+               new_name = Glib::build_filename (new_dir, X_("plugin_statuses"));
+
+               copy_file (old_name, new_name);
+
+               /* export formats */
+
+               old_name = Glib::build_filename (old_dir, export_formats_dir_name);
+               new_name = Glib::build_filename (new_dir, export_formats_dir_name);
+
+               vector<string> export_formats;
+               g_mkdir_with_parents (Glib::build_filename (new_dir, export_formats_dir_name).c_str(), 0755);
+               find_files_matching_pattern (export_formats, old_name, X_("*.format"));
+               for (vector<string>::iterator i = export_formats.begin(); i != export_formats.end(); ++i) {
+                       std::string from = *i;
+                       std::string to = Glib::build_filename (new_name, Glib::path_get_basename (*i));
+                       copy_file (from, to);
+               }
+       }
+
+       return 0;
+}
+
+void
+ARDOUR::check_for_old_configuration_files ()
+{
+       int current_version = atoi (X_(PROGRAM_VERSION));
+
+       if (current_version <= 1) {
+               return;
+       }
+
+       int old_version = current_version - 1;
+
+       string old_config_dir = user_config_directory (old_version);
+       /* pass in the current version explicitly to avoid creation */
+       string current_config_dir = user_config_directory (current_version);
+
+       if (!Glib::file_test (current_config_dir, Glib::FILE_TEST_IS_DIR)) {
+               if (Glib::file_test (old_config_dir, Glib::FILE_TEST_IS_DIR)) {
+                       have_old_configuration_files = true;
+               }
+       }
+}
+
+int
+ARDOUR::handle_old_configuration_files (boost::function<bool (std::string const&, std::string const&, int)> ui_handler)
+{
+       if (have_old_configuration_files) {
+               int current_version = atoi (X_(PROGRAM_VERSION));
+               assert (current_version > 1); // established in check_for_old_configuration_files ()
+               int old_version = current_version - 1;
+               string old_config_dir = user_config_directory (old_version);
+               string current_config_dir = user_config_directory (current_version);
+
+               if (ui_handler (old_config_dir, current_config_dir, old_version)) {
+                       copy_configuration_files (old_config_dir, current_config_dir, old_version);
+                       return 1;
+               }
+       }
+       return 0;
 }
 
 bool
@@ -229,10 +426,12 @@ ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir
 
 #ifdef ENABLE_NLS
        (void) bindtextdomain(PACKAGE, localedir);
+       (void) bind_textdomain_codeset (PACKAGE, "UTF-8");
 #endif
 
        SessionEvent::init_event_pool ();
 
+       Operations::make_operations_quarks ();
        SessionObject::make_property_quarks ();
        Region::make_property_quarks ();
        MidiRegion::make_property_quarks ();
@@ -240,6 +439,7 @@ ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir
        RouteGroup::make_property_quarks ();
         Playlist::make_property_quarks ();
         AudioPlaylist::make_property_quarks ();
+        PresentationInfo::make_property_quarks ();
 
        /* this is a useful ready to use PropertyChange that many
           things need to check. This avoids having to compose
@@ -262,7 +462,9 @@ ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir
        // allow ardour the absolute maximum number of open files
        lotsa_files_please ();
 
+#ifdef HAVE_LRDF
        lrdf_init();
+#endif
        Library = new AudioLibrary;
 
        BootMessage (_("Loading configuration"));
@@ -302,38 +504,61 @@ ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir
        SourceFactory::init ();
        Analyser::init ();
 
-       /* singleton - first object is "it" */
+       /* singletons - first object is "it" */
        (void) PluginManager::instance();
+#ifdef LV2_SUPPORT
+       (void) URIMap::instance();
+#endif
+       (void) EventTypeMap::instance();
+
+       ControlProtocolManager::instance().discover_control_protocols ();
+
+       /* for each control protocol, check for a request buffer factory method
+          and if it exists, store it in the EventLoop list of such
+          methods. This allows the relevant threads to register themselves
+          with EventLoops so that signal emission can be RT-safe.
+       */
+
+       ControlProtocolManager::instance().register_request_buffer_factories ();
+       /* it would be nice if this could auto-register itself in the
+          constructor, since MidiControlUI is a singleton, but it can't be
+          created until after the engine is running. Therefore we have to
+          explicitly register it here.
+       */
+       EventLoop::register_request_buffer_factory (X_("midiUI"), MidiControlUI::request_factory);
 
         ProcessThread::init ();
        /* the + 4 is a bit of a handwave. i don't actually know
           how many more per-thread buffer sets we need above
           the h/w concurrency, but its definitely > 1 more.
        */
-        BufferManager::init (hardware_concurrency() + 4); 
+        BufferManager::init (hardware_concurrency() + 4);
 
         PannerManager::instance().discover_panners();
 
-       // Initialize parameter metadata
-       EventTypeMap::instance().new_parameter(NullAutomation);
-       EventTypeMap::instance().new_parameter(GainAutomation);
-       EventTypeMap::instance().new_parameter(PanAzimuthAutomation);
-       EventTypeMap::instance().new_parameter(PanElevationAutomation);
-       EventTypeMap::instance().new_parameter(PanWidthAutomation);
-       EventTypeMap::instance().new_parameter(PluginAutomation);
-       EventTypeMap::instance().new_parameter(SoloAutomation);
-       EventTypeMap::instance().new_parameter(MuteAutomation);
-       EventTypeMap::instance().new_parameter(MidiCCAutomation);
-       EventTypeMap::instance().new_parameter(MidiPgmChangeAutomation);
-       EventTypeMap::instance().new_parameter(MidiPitchBenderAutomation);
-       EventTypeMap::instance().new_parameter(MidiChannelPressureAutomation);
-       EventTypeMap::instance().new_parameter(FadeInAutomation);
-       EventTypeMap::instance().new_parameter(FadeOutAutomation);
-       EventTypeMap::instance().new_parameter(EnvelopeAutomation);
-       EventTypeMap::instance().new_parameter(MidiCCAutomation);
-
        ARDOUR::AudioEngine::create ();
 
+       /* it is unfortunate that we need to include reserved names here that
+          refer to control surfaces. But there's no way to ensure a complete
+          lack of collisions without doing this, since the control surface
+          support may not even be active. Without adding an API to control
+          surface support that would list their port names, we do have to
+          list them here.
+       */
+
+       char const * const reserved[] = {
+               _("Monitor"),
+               _("Master"),
+               _("Control"),
+               _("Click"),
+               _("Mackie"),
+               0
+       };
+
+       for (int n = 0; reserved[n]; ++n) {
+               reserved_io_names.push_back (reserved[n]);
+       }
+
        libardour_initialized = true;
 
        return true;
@@ -342,8 +567,6 @@ ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir
 void
 ARDOUR::init_post_engine ()
 {
-       ControlProtocolManager::instance().discover_control_protocols ();
-
        XMLNode* node;
        if ((node = Config->control_protocol_state()) != 0) {
                ControlProtocolManager::instance().set_state (*node, Stateful::loading_state_version);
@@ -351,11 +574,11 @@ ARDOUR::init_post_engine ()
 
        /* find plugins */
 
-       ARDOUR::PluginManager::instance().refresh ();
+       ARDOUR::PluginManager::instance().refresh (!Config->get_discover_vst_on_start());
 }
 
 void
-ARDOUR::cleanup () 
+ARDOUR::cleanup ()
 {
        if (!libardour_initialized) {
                return;
@@ -364,7 +587,9 @@ ARDOUR::cleanup ()
        ARDOUR::AudioEngine::destroy ();
 
        delete Library;
+#ifdef HAVE_LRDF
        lrdf_cleanup ();
+#endif
        delete &ControlProtocolManager::instance();
 #ifdef WINDOWS_VST_SUPPORT
        fst_exit ();
@@ -373,38 +598,13 @@ ARDOUR::cleanup ()
 #ifdef LXVST_SUPPORT
        vstfx_exit();
 #endif
+       delete &PluginManager::instance();
+       delete Config;
        PBD::cleanup ();
 
        return;
 }
 
-void
-ARDOUR::find_bindings_files (map<string,string>& files)
-{
-       vector<std::string> found;
-       SearchPath spath = ardour_config_search_path();
-
-       if (getenv ("ARDOUR_SAE")) {
-               Glib::PatternSpec pattern("*SAE-*.bindings");
-               find_matching_files_in_search_path (spath, pattern, found);
-       } else {
-               Glib::PatternSpec pattern("*.bindings");
-               find_matching_files_in_search_path (spath, pattern, found);
-       }
-
-       if (found.empty()) {
-               return;
-       }
-
-       for (vector<std::string>::iterator x = found.begin(); x != found.end(); ++x) {
-               std::string path(*x);
-               pair<string,string> namepath;
-               namepath.second = path;
-               namepath.first = PBD::basename_nosuffix (path);
-               files.insert (namepath);
-       }
-}
-
 bool
 ARDOUR::no_auto_connect()
 {
@@ -414,6 +614,7 @@ ARDOUR::no_auto_connect()
 void
 ARDOUR::setup_fpu ()
 {
+       FPU* fpu = FPU::instance ();
 
        if (getenv ("ARDOUR_RUNNING_UNDER_VALGRIND")) {
                // valgrind doesn't understand this assembler stuff
@@ -424,13 +625,8 @@ ARDOUR::setup_fpu ()
 #if defined(ARCH_X86) && defined(USE_XMMINTRIN)
 
        int MXCSR;
-       FPU fpu;
-
-       /* XXX use real code to determine if the processor supports
-          DenormalsAreZero and FlushToZero
-       */
 
-       if (!fpu.has_flush_to_zero() && !fpu.has_denormals_are_zero()) {
+       if (!fpu->has_flush_to_zero() && !fpu->has_denormals_are_zero()) {
                return;
        }
 
@@ -439,7 +635,7 @@ ARDOUR::setup_fpu ()
 #ifdef DEBUG_DENORMAL_EXCEPTION
        /* This will raise a FP exception if a denormal is detected */
        MXCSR &= ~_MM_MASK_DENORM;
-#endif 
+#endif
 
        switch (Config->get_denormal_model()) {
        case DenormalNone:
@@ -447,21 +643,21 @@ ARDOUR::setup_fpu ()
                break;
 
        case DenormalFTZ:
-               if (fpu.has_flush_to_zero()) {
+               if (fpu->has_flush_to_zero()) {
                        MXCSR |= _MM_FLUSH_ZERO_ON;
                }
                break;
 
        case DenormalDAZ:
                MXCSR &= ~_MM_FLUSH_ZERO_ON;
-               if (fpu.has_denormals_are_zero()) {
+               if (fpu->has_denormals_are_zero()) {
                        MXCSR |= 0x40;
                }
                break;
 
        case DenormalFTZDAZ:
-               if (fpu.has_flush_to_zero()) {
-                       if (fpu.has_denormals_are_zero()) {
+               if (fpu->has_flush_to_zero()) {
+                       if (fpu->has_denormals_are_zero()) {
                                MXCSR |= _MM_FLUSH_ZERO_ON | 0x40;
                        } else {
                                MXCSR |= _MM_FLUSH_ZERO_ON;
@@ -489,7 +685,7 @@ ARDOUR::translation_enable_path ()
 bool
 ARDOUR::translations_are_enabled ()
 {
-       int fd = ::open (ARDOUR::translation_enable_path().c_str(), O_RDONLY);
+       int fd = g_open (ARDOUR::translation_enable_path().c_str(), O_RDONLY, 0444);
 
        if (fd < 0) {
                return translate_by_default;
@@ -511,20 +707,20 @@ bool
 ARDOUR::set_translations_enabled (bool yn)
 {
        string i18n_enabler = ARDOUR::translation_enable_path();
-       int fd = ::open (i18n_enabler.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0644);
+       int fd = g_open (i18n_enabler.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0644);
 
        if (fd < 0) {
                return false;
        }
-       
+
        char c;
-       
+
        if (yn) {
                c = '1';
        } else {
                c = '0';
        }
-       
+
        (void) ::write (fd, &c, 1);
        (void) ::close (fd);
 
@@ -559,7 +755,7 @@ ARDOUR::get_available_sync_options ()
 #include <mach/mach_time.h>
 #define CLOCK_REALTIME 0
 #define CLOCK_MONOTONIC 0
-int 
+int
 clock_gettime (int /*clk_id*/, struct timespec *t)
 {
         static bool initialized = false;
@@ -577,14 +773,48 @@ clock_gettime (int /*clk_id*/, struct timespec *t)
         return 0;
 }
 #endif
+
 microseconds_t
 ARDOUR::get_microseconds ()
 {
+#ifdef PLATFORM_WINDOWS
+       microseconds_t ret = 0;
+       LARGE_INTEGER freq, time;
+
+       if (QueryPerformanceFrequency(&freq))
+               if (QueryPerformanceCounter(&time))
+                       ret = (microseconds_t)((time.QuadPart * 1000000) / freq.QuadPart);
+
+       return ret;
+#else
        struct timespec ts;
        if (clock_gettime (CLOCK_MONOTONIC, &ts) != 0) {
                /* EEEK! */
                return 0;
        }
        return (microseconds_t) ts.tv_sec * 1000000 + (ts.tv_nsec/1000);
+#endif
+}
+
+/** Return the number of bits per sample for a given sample format.
+ *
+ * This is closely related to sndfile_data_width() but does NOT
+ * return a "magic" value to differentiate between 32 bit integer
+ * and 32 bit floating point values.
+ */
+
+int
+ARDOUR::format_data_width (ARDOUR::SampleFormat format)
+{
+
+
+
+       switch (format) {
+       case ARDOUR::FormatInt16:
+               return 16;
+       case ARDOUR::FormatInt24:
+               return 24;
+       default:
+               return 32;
+       }
 }