derelict.vorbis.enc source code

1 /*
2 
3 Boost Software License - Version 1.0 - August 17th, 2003
4 
5 Permission is hereby granted, free of charge, to any person or organization
6 obtaining a copy of the software and accompanying documentation covered by
7 this license (the "Software") to use, reproduce, display, distribute,
8 execute, and transmit the Software, and to prepare derivative works of the
9 Software, and to permit third-parties to whom the Software is furnished to
10 do so, all subject to the following:
11 
12 The copyright notices in the Software and this entire statement, including
13 the above license grant, this restriction and the following disclaimer,
14 must be included in all copies of the Software, in whole or in part, and
15 all derivative works of the Software, unless such copies or derivative
16 works are solely in the form of machine-executable object code generated by
17 a source language processor.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
22 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
23 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
24 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 DEALINGS IN THE SOFTWARE.
26 
27 */
28 module derelict.vorbis.enc;
29 
30 private {
31     import core.stdc.config;
32     import derelict.util.loader;
33     import derelict.util.system;
34     import derelict.vorbis.codec;
35 
36     static if(Derelict_OS_Windows)
37         enum libNames = "vorbisenc.dll, libvorbisenc-0.dll, libvorbisenc.dll";
38     else static if(Derelict_OS_Mac)
39         enum libNames = "libvorbisenc.dylib, libvorbisenc.0.dylib";
40     else static if(Derelict_OS_Posix)
41         enum libNames = "libvorbisenc.so, libvorbisenc.so.0, libvorbisenc.so.0.3.0";
42     else
43         static assert(0, "Need to implement libvorbisenc libnames for this operating system.");
44 }
45 
46 struct ovectl_ratemanage_arg {
47     int management_active;
48     c_long bitrate_hard_min;
49     c_long bitrate_hard_max;
50     double bitrate_hard_window;
51     c_long bitrate_av_lo;
52     c_long bitrate_av_hi;
53     double bitrate_av_window;
54     double bitrate_av_window_center;
55 }
56 
57 struct ovectl_ratemanage2_arg {
58     int management_active;
59     c_long bitrate_limit_min_kbps;
60     c_long bitrate_limit_max_kbps;
61     c_long bitrate_limit_reservoir_bits;
62     double bitrate_limit_reservoir_bias;
63     c_long bitrate_average_kbps;
64     double bitrate_average_damping;
65 }
66 
67 enum {
68     OV_ECTL_RATEMANAGE_GET =0x10,
69     OV_ECTL_RATEMANAGE_SET =0x11,
70     OV_ECTL_RATEMANAGE_AVG =0x12,
71     OV_ECTL_RATEMANAGE_HARD =0x13,
72     OV_ECTL_RATEMANAGE2_GET =0x14,
73     OV_ECTL_RATEMANAGE2_SET =0x15,
74     OV_ECTL_LOWPASS_GET =0x20,
75     OV_ECTL_LOWPASS_SET =0x21,
76     OV_ECTL_IBLOCK_GET =0x30,
77     OV_ECTL_IBLOCK_SET =0x31,
78 }
79 
80 extern(C) @nogc nothrow {
81     alias da_vorbis_encode_init = int function(vorbis_info*, c_long, c_long, c_long, c_long, c_long);
82     alias da_vorbis_encode_setup_managed = int function(vorbis_info*, c_long, c_long, c_long, c_long, c_long);
83     alias da_vorbis_encode_setup_vbr = int function(vorbis_info*, c_long, c_long, float);
84     alias da_vorbis_encode_init_vbr = int function(vorbis_info*, c_long, c_long, float);
85     alias da_vorbis_encode_setup_init = int function(vorbis_info*);
86     alias da_vorbis_encode_ctl = int function(vorbis_info*, int, void*);
87 }
88 
89 __gshared {
90     da_vorbis_encode_init vorbis_encode_init;
91     da_vorbis_encode_setup_managed vorbis_encode_setup_managed;
92     da_vorbis_encode_setup_vbr vorbis_encode_setup_vbr;
93     da_vorbis_encode_init_vbr vorbis_encode_init_vbr;
94     da_vorbis_encode_setup_init vorbis_encode_setup_init;
95     da_vorbis_encode_ctl vorbis_encode_ctl;
96 }
97 
98 class DerelictVorbisEncLoader : SharedLibLoader {
99     public this() {
100         super(libNames);
101     }
102 
103     protected override void loadSymbols() {
104         bindFunc(cast(void**)&vorbis_encode_init, "vorbis_encode_init");
105         bindFunc(cast(void**)&vorbis_encode_setup_managed, "vorbis_encode_setup_managed");
106         bindFunc(cast(void**)&vorbis_encode_setup_vbr, "vorbis_encode_setup_vbr");
107         bindFunc(cast(void**)&vorbis_encode_init_vbr, "vorbis_encode_init_vbr");
108         bindFunc(cast(void**)&vorbis_encode_setup_init, "vorbis_encode_setup_init");
109         bindFunc(cast(void**)&vorbis_encode_ctl, "vorbis_encode_ctl");
110     }
111 }
112 
113 __gshared DerelictVorbisEncLoader DerelictVorbisEnc;
114 
115 shared static this() {
116     DerelictVorbisEnc = new DerelictVorbisEncLoader();
117 }