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{
BASSWMA 2.4 Delphi unit
Copyright (c) 2002-2008 Un4seen Developments Ltd.
See the BASSWMA.CHM file for more detailed documentation
}
unit DynBassWMA;
interface
uses Windows, Dynamic_Bass;
const
// Additional error codes returned by BASS_ErrorGetCode
BASS_ERROR_WMA_LICENSE = 1000; // the file is protected
BASS_ERROR_WMA = 1001; // Windows Media (9 or above) is not installed
BASS_ERROR_WMA_WM9 = BASS_ERROR_WMA;
BASS_ERROR_WMA_DENIED = 1002; // access denied (user/pass is invalid)
BASS_ERROR_WMA_INDIVIDUAL = 1004; // individualization is needed
// Additional BASS_SetConfig options
BASS_CONFIG_WMA_PRECHECK = $10100;
BASS_CONFIG_WMA_PREBUF = $10101;
// BASS_CONFIG_WMA_ASX = $10102;
BASS_CONFIG_WMA_BASSFILE = $10103;
BASS_CONFIG_WMA_NETSEEK = $10104;
BASS_CONFIG_WMA_VIDEO = $10105;
// additional WMA sync types
BASS_SYNC_WMA_CHANGE = $10100;
BASS_SYNC_WMA_META = $10101;
// additional BASS_StreamGetFilePosition WMA mode
BASS_FILEPOS_WMA_BUFFER = 1000; // internet buffering progress (0-100%)
// Additional flags for use with BASS_WMA_EncodeOpen/File/Network/Publish
BASS_WMA_ENCODE_STANDARD = $2000; // standard WMA
BASS_WMA_ENCODE_PRO = $4000; // WMA Pro
BASS_WMA_ENCODE_24BIT = $8000; // 24-bit
BASS_WMA_ENCODE_PCM = $10000; // uncompressed PCM
BASS_WMA_ENCODE_SCRIPT = $20000; // set script (mid-stream tags) in the WMA encoding
// Additional flag for use with BASS_WMA_EncodeGetRates
BASS_WMA_ENCODE_RATES_VBR = $10000; // get available VBR quality settings
// WMENCODEPROC "type" values
BASS_WMA_ENCODE_HEAD = 0;
BASS_WMA_ENCODE_DATA = 1;
BASS_WMA_ENCODE_DONE = 2;
// BASS_WMA_EncodeSetTag "form" values
BASS_WMA_TAG_ANSI = 0;
BASS_WMA_TAG_UNICODE = 1;
BASS_WMA_TAG_UTF8 = 2;
BASS_WMA_TAG_BINARY = $100; // FLAG: binary tag (HIWORD=length)
// BASS_CHANNELINFO type
BASS_CTYPE_STREAM_WMA = $10300;
BASS_CTYPE_STREAM_WMA_MP3 = $10301;
// Additional BASS_ChannelGetTags type
BASS_TAG_WMA = 8; // WMA header tags : series of null-terminated UTF-8 strings
BASS_TAG_WMA_META = 11; // WMA mid-stream tag : UTF-8 string
BASS_TAG_WMA_CODEC = 12; // WMA codec
type
HWMENCODE = DWORD; // WMA encoding handle
CLIENTCONNECTPROC = procedure(handle:HWMENCODE; connect:BOOL; ip:PChar; user:Pointer); stdcall;
{
Client connection notification callback function.
handle : The encoder
connect: TRUE=client is connecting, FALSE=disconnecting
ip : The client's IP (xxx.xxx.xxx.xxx:port)
user : The 'user' parameter value given when calling BASS_WMA_EncodeSetNotify
}
WMENCODEPROC = procedure(handle:HWMENCODE; dtype:DWORD; buffer:Pointer; length:DWORD; user:Pointer); stdcall;
{
Encoder callback function.
handle : The encoder handle
dtype : The type of data, one of BASS_WMA_ENCODE_xxx values
buffer : The encoded data
length : Length of the data
user : The 'user' parameter value given when calling BASS_WMA_EncodeOpen
}
const
basswmadll = 'basswma.dll';
var BASS_WMA_StreamCreateFile :function(mem:BOOL; fl:pointer; offset,length:QWORD; flags:DWORD): HSTREAM; stdcall;
var BASS_WMA_StreamCreateFileAuth :function(mem:BOOL; fl:pointer; offset,length:QWORD; flags:DWORD; user,pass:PChar): HSTREAM; stdcall;
var BASS_WMA_StreamCreateFileUser :function(system,flags:DWORD; var procs:BASS_FILEPROCS; user:Pointer): HSTREAM; stdcall;
var BASS_WMA_GetTags :function(fname:PChar; flags:DWORD): PAnsiChar; stdcall;
var BASS_WMA_EncodeGetRates :function(freq,chans,flags:DWORD): PDWORD; stdcall;
var BASS_WMA_EncodeOpen :function(freq,chans,flags,bitrate:DWORD; proc:WMENCODEPROC; user:Pointer): HWMENCODE; stdcall;
var BASS_WMA_EncodeOpenFile :function(freq,chans,flags,bitrate:DWORD; fname:PChar): HWMENCODE; stdcall;
var BASS_WMA_EncodeOpenNetwork :function(freq,chans,flags,bitrate,port,clients:DWORD): HWMENCODE; stdcall;
var BASS_WMA_EncodeOpenNetworkMulti:function(freq,chans,flags:DWORD; bitrates:PDWORD; port,clients:DWORD): HWMENCODE; stdcall;
var BASS_WMA_EncodeOpenPublish :function(freq,chans,flags,bitrate:DWORD; url,user,pass:PChar): HWMENCODE; stdcall;
var BASS_WMA_EncodeOpenPublishMulti:function(freq,chans,flags:DWORD; bitrates:PDWORD; url,user,pass:PChar): HWMENCODE; stdcall;
var BASS_WMA_EncodeGetPort :function(handle:HWMENCODE): DWORD; stdcall;
var BASS_WMA_EncodeSetNotify :function(handle:HWMENCODE; proc:CLIENTCONNECTPROC; user:Pointer): BOOL; stdcall;
var BASS_WMA_EncodeGetClients :function(handle:HWMENCODE): DWORD; stdcall;
var BASS_WMA_EncodeSetTag :function(handle:HWMENCODE; tag,text:PChar; ttype:DWORD): BOOL; stdcall;
var BASS_WMA_EncodeWrite :function(handle:HWMENCODE; buffer:Pointer; length:DWORD): BOOL; stdcall;
var BASS_WMA_EncodeClose :function(handle:HWMENCODE): BOOL; stdcall;
var BASS_WMA_GetWMObject :function(handle:DWORD): Pointer; stdcall;
function InitWMA:bool;
Function Load_WMADLL(dllfilename:PAnsiChar):boolean; overload;
Function Load_WMADLL(dllfilename:PWideChar):boolean; overload;
implementation
const
WMA_Handle:THANDLE = 0;
from:integer = 0;
procedure SetProcs(handle:THANDLE);
begin
@BASS_WMA_StreamCreateFile :=GetProcAddress(handle,'BASS_WMA_StreamCreateFile');
@BASS_WMA_StreamCreateFileAuth :=GetProcAddress(handle,'BASS_WMA_StreamCreateFileAuth');
@BASS_WMA_StreamCreateFileUser :=GetProcAddress(handle,'BASS_WMA_StreamCreateFileUser');
@BASS_WMA_GetTags :=GetProcAddress(handle,'BASS_WMA_GetTags');
@BASS_WMA_EncodeGetRates :=GetProcAddress(handle,'BASS_WMA_EncodeGetRates');
@BASS_WMA_EncodeOpen :=GetProcAddress(handle,'BASS_WMA_EncodeGetOpen');
@BASS_WMA_EncodeOpenFile :=GetProcAddress(handle,'BASS_WMA_EncodeOpenFile');
@BASS_WMA_EncodeOpenNetwork :=GetProcAddress(handle,'BASS_WMA_EncodeOpenNetwork');
@BASS_WMA_EncodeOpenNetworkMulti:=GetProcAddress(handle,'BASS_WMA_EncodeOpenNetworkMulti');
@BASS_WMA_EncodeOpenPublish :=GetProcAddress(handle,'BASS_WMA_EncodeOpenPublish');
@BASS_WMA_EncodeOpenPublishMulti:=GetProcAddress(handle,'BASS_WMA_EncodeOpenPublishMulti');
@BASS_WMA_EncodeGetPort :=GetProcAddress(handle,'BASS_WMA_EncodeGetPort');
@BASS_WMA_EncodeSetNotify :=GetProcAddress(handle,'BASS_WMA_EncodeSetNotify');
@BASS_WMA_EncodeGetClients :=GetProcAddress(handle,'BASS_WMA_EncodeGetClients');
@BASS_WMA_EncodeSetTag :=GetProcAddress(handle,'BASS_WMA_EncodeSetTag');
@BASS_WMA_EncodeWrite :=GetProcAddress(handle,'BASS_WMA_EncodeWrite');
@BASS_WMA_EncodeClose :=GetProcAddress(handle,'BASS_WMA_EncodeClose');
@BASS_WMA_GetWMObject:=GetProcAddress(handle,'BASS_WMA_GetWMObject');
end;
function InitWMA:bool;
var
info:PBASS_PLUGININFO;
i:dword;
pHPlugin:^HPLUGIN;
begin
if WMA_Handle<>0 then
begin
result:=true;
exit;
end;
result:=false;
pHPlugin:=pointer(BASS_PluginGetInfo(0));
if pHPlugin=nil then exit;
while pHPlugin^<>0 do
begin
info:=BASS_PluginGetInfo(pHPlugin^);
i:=0;
while i<info^.formatc do
begin
if info^.formats^[i].ctype=BASS_CTYPE_STREAM_WMA then
begin
WMA_Handle:=pHPlugin^;
SetProcs(pHPlugin^);
BASS_SetConfig(BASS_CONFIG_WMA_BASSFILE,1);
from:=2;
result:=true;
exit;
end;
inc(i);
end;
inc(pHPlugin);
end;
end;
Function Load_WMADLL(dllfilename:PAnsiChar):boolean;
var
oldmode:integer;
begin
if WMA_Handle<>0 then result:=true
else
begin
oldmode:=SetErrorMode($8001);
WMA_Handle:=LoadLibraryA(dllfilename);
SetErrorMode(oldmode);
result:=WMA_Handle<>0;
if result then
begin
from:=1;
SetProcs(WMA_Handle);
end;
end;
end;
Function Load_WMADLL(dllfilename:PWideChar):boolean;
var
oldmode:integer;
begin
if WMA_Handle<>0 then result:=true
else
begin
oldmode:=SetErrorMode($8001);
WMA_Handle:=LoadLibraryW(dllfilename);
SetErrorMode(oldmode);
result:=WMA_Handle<>0;
if result then
begin
from:=1;
SetProcs(WMA_Handle);
end;
end;
end;
Procedure Unload_WMADLL;
begin
if WMA_Handle<>0 then
begin
if from=2 then
BASS_PluginFree(WMA_Handle)
else //if from=1 then
FreeLibrary(WMA_Handle);
WMA_Handle:=0;
end;
from:=0;
end;
var
mWMA:tBASSRegRec;
procedure Init;
begin
mWMA.Next:=BASSRegRec;
mWMA.Init:=@InitWMA;
BASSRegRec:=@mWMA;
end;
begin
Init;
end.
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