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{* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*}
unit UMediaPlugin;
interface
{$IFDEF FPC}
{$MODE DELPHI }
{$PACKENUM 4} (* use 4-byte enums *)
{$PACKRECORDS C} (* C/C++-compatible record packing *)
{$ELSE}
{$MINENUMSIZE 4} (* use 4-byte enums *)
{$ENDIF}
uses
ctypes;
type
PMediaPluginCore = ^TMediaPluginCore;
TMediaPluginCore = record
log: procedure(level: cint; msg: PChar; context: PChar); cdecl;
end;
PDecodeStream = Pointer;
PCAudioFormatInfo = ^TCAudioFormatInfo;
TCAudioFormatInfo = record
sampleRate: double;
channels: cuint8;
format: cint;
end;
const
{$IFDEF MSWINDOWS}
ffmpegPlugin = 'ffmpeg_playback.dll';
{$ENDIF}
{$IFDEF LINUX}
ffmpegPlugin = 'ffmpeg_playback';
{$ENDIF}
{$IFDEF DARWIN}
ffmpegPlugin = 'ffmpeg_playback.dylib';
{$linklib ffmpegPlugin}
{$ENDIF}
function Plugin_initialize(core: PMediaPluginCore): cbool;
cdecl; external ffmpegPlugin;
function DecodeStream_open(filename: PAnsiChar): PDecodeStream;
cdecl; external ffmpegPlugin;
procedure DecodeStream_close(stream: PDecodeStream);
cdecl; external ffmpegPlugin;
function DecodeStream_getLength(stream: PDecodeStream): double;
cdecl; external ffmpegPlugin;
procedure DecodeStream_getAudioFormatInfo(stream: PDecodeStream; var info: TCAudioFormatInfo);
cdecl; external ffmpegPlugin;
function DecodeStream_getPosition(stream: PDecodeStream): double;
cdecl; external ffmpegPlugin;
procedure DecodeStream_setPosition(stream: PDecodeStream; time: double);
cdecl; external ffmpegPlugin;
function DecodeStream_getLoop(stream: PDecodeStream): cbool;
cdecl; external ffmpegPlugin;
procedure DecodeStream_setLoop(stream: PDecodeStream; enabled: cbool);
cdecl; external ffmpegPlugin;
function DecodeStream_isEOF(stream: PDecodeStream): cbool;
cdecl; external ffmpegPlugin;
function DecodeStream_isError(stream: PDecodeStream): cbool;
cdecl; external ffmpegPlugin;
function DecodeStream_readData(stream: PDecodeStream; buffer: PCUint8; bufferSize: cint): cint;
cdecl; external ffmpegPlugin;
function MediaPluginCore: PMediaPluginCore;
implementation
uses
ULog;
var
MediaPluginCore_Instance: TMediaPluginCore;
const
DebugLogLevels: array[0 .. 5] of integer = (
LOG_LEVEL_DEBUG,
LOG_LEVEL_INFO,
LOG_LEVEL_STATUS,
LOG_LEVEL_WARN,
LOG_LEVEL_ERROR,
LOG_LEVEL_CRITICAL
);
procedure LogFunc(level: cint; msg: PChar; context: PChar); cdecl;
begin
Log.LogMsg(msg, context, DebugLogLevels[level]);
end;
function MediaPluginCore: PMediaPluginCore;
begin
Result := @MediaPluginCore_Instance;
end;
procedure InitializeMediaPluginCore;
begin
MediaPluginCore.log := LogFunc;
end;
initialization
InitializeMediaPluginCore;
end.
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