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| unit BassComp;
interface
uses
System.SysUtils, System.Classes, System.SysConst, System.Types,
Dynamic_Bass;
type
TEventInitProc = procedure(Sender: TObject; Initialized: Boolean) of object;
TEventPlayingProc = procedure(Sender: TObject; Position: Int64) of object;
TEventDonePlayingProc = procedure(Sedner: TObject) of object;
TEventDoneDownload = procedure(Sender: TObject; Downloaded: Boolean)
of object;
TBass = class(TComponent)
private
FLibrary: string;
FInitialized: Boolean;
// Track
FLength: Int64;
FPosition: Int64;
FLoop: Boolean;
// Stream
FStream: HSTREAM;
// Volume, Mute and etc.
FVolume: Single;
FMute: Boolean;
FReservedVolume: Single;
// Event Procedures
FOnInitialized: TEventInitProc;
FOnPlaying: TEventPlayingProc;
FOnDonePlaying: TEventDonePlayingProc;
FOnStreamDownloaded: TEventDoneDownload;
procedure DoInitialized(Sender: TObject; Initialized: Boolean);
procedure DoPlaying(Sender: TObject; Position: Int64);
procedure DoDonePlaying(Sender: TObject);
procedure DoStreamDownloaded(Sender: TObject; Downloaded: Boolean);
protected
public
procedure Initialize(const BASSLibrary: string; const Device: integer;
Freq: integer; Flags: Cardinal; WND: Cardinal; BGUID: PGUID);
procedure SetVolume(const NewVolume: integer);
function _getlength(): Int64;
procedure SetMute(const Mute: Boolean);
procedure PlayFile(const FileName: string);
procedure PlayURL(const URL: string);
published
property OnInitialized: TEventInitProc read FOnInitialized
write FOnInitialized;
property OnPlaying: TEventPlayingProc read FOnPlaying write FOnPlaying;
property OnDone: TEventDonePlayingProc read FOnDonePlaying
write FOnDonePlaying;
property OnStreamDownloaded: TEventDoneDownload read FOnStreamDownloaded
write FOnStreamDownloaded;
property Volume: Single read FVolume;
property Loop: Boolean read FLoop write FLoop;
end;
procedure register;
var
b: TBass;
implementation
procedure register;
begin
RegisterComponents('HunterComponents', [TBass]);
end;
{ Sync Procs }
procedure sync_playing(HSYNC: Cardinal; Channel: DWORD; Data: DWORD;
User: Pointer);
begin
b.DoPlaying(b, BASS_ChannelGetPosition(Channel, BASS_POS_BYTE));
end;
procedure sync_doneplaying(HSYNC: Cardinal; Channel: DWORD; Data: DWORD;
User: Pointer);
begin
BASS_ChannelRemoveSync(Channel, HSYNC);
BASS_StreamFree(Channel);
b.DoDonePlaying(b);
end;
procedure sync_downloaded(HSYNC: Cardinal; Channel: DWORD; Data: DWORD;
User: Pointer);
begin
b.DoStreamDownloaded(b, true);
end;
{ TBass }
procedure TBass.DoDonePlaying(Sender: TObject);
begin
FOnDonePlaying(Sender);
end;
procedure TBass.DoInitialized(Sender: TObject; Initialized: Boolean);
begin
FInitialized := Initialized;
FOnInitialized(Sender, Initialized);
end;
procedure TBass.DoPlaying(Sender: TObject; Position: Int64);
begin
FOnPlaying(Sender, Position);
end;
procedure TBass.DoStreamDownloaded(Sender: TObject; Downloaded: Boolean);
begin
FOnStreamDownloaded(Sender, Downloaded);
end;
procedure TBass.Initialize(const BASSLibrary: string; const Device: integer;
Freq: integer; Flags, WND: Cardinal; BGUID: PGUID);
begin
if BASSLibrary <> '' then
begin
if Load_BASSDLL(BASSLibrary) = true then
begin
if not BASS_Init(Device, Freq, Flags, WND, BGUID) then
begin
DoInitialized(Self, False);
end
else
begin
DoInitialized(Self, true);
b := Self;
end;
end;
end;
end;
procedure TBass.PlayFile(const FileName: string);
begin
if FInitialized = true then
begin
if FileName <> '' then
begin
if BASS_ChannelIsActive(FStream) = BASS_ACTIVE_PLAYING then
begin
BASS_ChannelStop(FStream);
end;
FStream := BASS_StreamCreateFile(False, PChar(AnsiString(FileName)
), 0, 0, BASS);
BASS_ChannelGetAttribute(FStream, BASS_ATTRIB_VOL, FVolume);
FLength := BASS_ChannelGetLength(FStream, BASS_POS_BYTE);
BASS_ChannelSetSync(FStream, BASS_SYNC_POS, 0,
@sync_playing, nil);
BASS_ChannelSetSync(FStream, BASS_SYNC_DOWNLOAD, 0,
@sync_downloaded, nil);
BASS_ChannelPlay(FStream, FLoop);
BASS_ChannelSetSync(FStream, BASS_SYNC_END, 0,
@sync_doneplaying, nil);
end;
end;
end;
procedure TBass.PlayURL(const URL: string);
begin
if FInitialized = true then
begin
if URL <> '' then
begin
if BASS_ChannelIsActive(FStream) = BASS_ACTIVE_PLAYING then
begin
BASS_ChannelStop(FStream);
end;
FStream := BASS_StreamCreateURL(PAnsiChar(AnsiString(URL)), 0, 0,
nil, nil);
BASS_ChannelSetSync(FStream, BASS_SYNC_POS, 0,
@sync_playing, nil);
BASS_ChannelSetSync(FStream, BASS_SYNC_END, 0,
@sync_doneplaying, nil);
BASS_ChannelSetSync(FStream, BASS_SYNC_DOWNLOAD, 0,
@sync_downloaded, nil);
FLength := BASS_ChannelGetLength(FStream, BASS_POS_BYTE);
BASS_ChannelPlay(FStream, FLoop);
end;
end;
end;
procedure TBass.SetMute(const Mute: Boolean);
begin
if Mute = true then
begin
BASS_ChannelGetAttribute(FStream, BASS_ATTRIB_VOL, FReservedVolume);
BASS_ChannelSetAttribute(FStream, BASS_ATTRIB_VOL, 0);
FVolume := 0;
Exit;
end;
if Mute = False then
begin
BASS_ChannelSetAttribute(FStream, BASS_ATTRIB_VOL, FReservedVolume);
FVolume := FReservedVolume;
Exit;
end;
end;
procedure TBass.SetVolume(const NewVolume: integer);
begin
BASS_ChannelSetAttribute(FStream, BASS_ATTRIB_VOL, NewVolume);
FVolume := NewVolume;
end;
function TBass._getlength: Int64;
begin
Result := BASS_ChannelGetLength(FStream, BASS_POS_BYTE);
end;
begin
end. |
(
