2 Copyright (C) 1999 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_utils_h__
21 #define __ardour_utils_h__
24 #include "libardour-config.h"
31 #if defined(HAVE_COREAUDIO) || defined(HAVE_AUDIOUNITS)
32 #include <CoreFoundation/CoreFoundation.h>
35 bool string_is_affirmative (const std::string&);
37 #include "ardour/ardour.h"
38 #include "ardour/data_type.h"
42 std::string legalize_for_path (const std::string& str);
43 XMLNode* find_named_node (const XMLNode& node, std::string name);
44 std::string bool_as_string (bool);
46 static inline float f_max(float x, float a) {
55 std::string bump_name_once(const std::string& s, char delimiter);
57 int cmp_nocase (const std::string& s, const std::string& s2);
59 int touch_file(std::string path);
61 std::string path_expand (std::string);
62 std::string region_name_from_path (std::string path, bool strip_channels, bool add_channel_suffix = false, uint32_t total = 0, uint32_t this_one = 0);
63 bool path_is_paired (std::string path, std::string& pair_base);
65 void compute_equal_power_fades (ARDOUR::nframes_t nframes, float* in, float* out);
67 const char* sync_source_to_string (ARDOUR::SyncSource src);
68 ARDOUR::SyncSource string_to_sync_source (std::string str);
70 const char* edit_mode_to_string (ARDOUR::EditMode);
71 ARDOUR::EditMode string_to_edit_mode (std::string);
75 gain_to_slider_position (ARDOUR::gain_t g)
78 return pow((6.0*log(g)/log(2.0)+192.0)/198.0, 8.0);
82 static inline ARDOUR::gain_t
83 slider_position_to_gain (double pos)
85 /* XXX Marcus writes: this doesn't seem right to me. but i don't have a better answer ... */
86 if (pos == 0.0) return 0;
87 return pow (2.0,(sqrt(sqrt(sqrt(pos)))*198.0-192.0)/6.0);
90 /* I don't really like hard-coding these falloff rates here
91 * Probably should use a map of some kind that could be configured
92 * These rates are db/sec.
95 #define METER_FALLOFF_OFF 0.0f
96 #define METER_FALLOFF_SLOWEST 6.6f // BBC standard
97 #define METER_FALLOFF_SLOW 8.6f // BBC standard
98 #define METER_FALLOFF_MEDIUM 20.0f
99 #define METER_FALLOFF_FAST 32.0f
100 #define METER_FALLOFF_FASTER 46.0f
101 #define METER_FALLOFF_FASTEST 70.0f
103 float meter_falloff_to_float (ARDOUR::MeterFalloff);
104 ARDOUR::MeterFalloff meter_falloff_from_float (float);
105 float meter_falloff_to_db_per_sec (float);
107 const char* native_header_format_extension (ARDOUR::HeaderFormat, const ARDOUR::DataType& type);
108 bool matching_unsuffixed_filename_exists_in (const std::string& dir, const std::string& name);
110 #if defined(HAVE_COREAUDIO) || defined(HAVE_AUDIOUNITS)
111 std::string CFStringRefToStdString(CFStringRef stringRef);
112 #endif // HAVE_COREAUDIO
114 #endif /* __ardour_utils_h__ */