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(*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* This is a part of Pascal porting of ffmpeg.
* - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
* - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
* in the source codes.
* - Changes and updates by the UltraStar Deluxe Team
*
* Conversions of
*
* libavutil/avutil.h:
* version: 51.9.1
*
*)
unit avutil;
{$IFDEF FPC}
{$MODE DELPHI}
{$PACKENUM 4} (* use 4-byte enums *)
{$PACKRECORDS C} (* C/C++-compatible record packing *)
{$ELSE}
{$MINENUMSIZE 4} (* use 4-byte enums *)
{$ENDIF}
{$IFDEF DARWIN}
{$linklib libavutil}
{$ENDIF}
interface
uses
ctypes,
rational,
{$IFDEF UNIX}
BaseUnix,
{$ENDIF}
UConfig;
const
(* Max. supported version by this header *)
LIBAVUTIL_MAX_VERSION_MAJOR = 51;
LIBAVUTIL_MAX_VERSION_MINOR = 9;
LIBAVUTIL_MAX_VERSION_RELEASE = 1;
LIBAVUTIL_MAX_VERSION = (LIBAVUTIL_MAX_VERSION_MAJOR * VERSION_MAJOR) +
(LIBAVUTIL_MAX_VERSION_MINOR * VERSION_MINOR) +
(LIBAVUTIL_MAX_VERSION_RELEASE * VERSION_RELEASE);
(* Min. supported version by this header *)
LIBAVUTIL_MIN_VERSION_MAJOR = 51;
LIBAVUTIL_MIN_VERSION_MINOR = 9;
LIBAVUTIL_MIN_VERSION_RELEASE = 1;
LIBAVUTIL_MIN_VERSION = (LIBAVUTIL_MIN_VERSION_MAJOR * VERSION_MAJOR) +
(LIBAVUTIL_MIN_VERSION_MINOR * VERSION_MINOR) +
(LIBAVUTIL_MIN_VERSION_RELEASE * VERSION_RELEASE);
(* Check if linked versions are supported *)
{$IF (LIBAVUTIL_VERSION < LIBAVUTIL_MIN_VERSION)}
{$MESSAGE Error 'Linked version of libavutil is too old!'}
{$IFEND}
{$IF (LIBAVUTIL_VERSION > LIBAVUTIL_MAX_VERSION)}
{$MESSAGE Error 'Linked version of libavutil is not yet supported!'}
{$IFEND}
{$IFNDEF FPC}
type
// defines for Delphi
size_t = cardinal;
{$ENDIF}
{$INCLUDE libavutil/cpu.pas}
{$INCLUDE libavutil/dict.pas}
{$INCLUDE libavutil/error.pas}
{$INCLUDE libavutil/mathematics.pas}
{$INCLUDE libavutil/mem.pas}
{$INCLUDE libavutil/opt.pas}
{$INCLUDE libavutil/log.pas}
{$INCLUDE libavutil/pixfmt.pas}
{$INCLUDE libavutil/samplefmt.pas}
(* libavutil/common.h *) // until now MKTAG and MKBETAG is all from common.h KMS 19/5/2010
(**
* MKTAG and MKBETAG are usually used to convert a magic string to an enumeration index.
* In Pascal this can probably not be used and the functions could be removed.
* KMS 8/6/2012
*)
function MKTAG (a, b, c, d: AnsiChar): integer; {$IFDEF HasInline}inline;{$ENDIF}
function MKBETAG(a, b, c, d: AnsiChar): integer; {$IFDEF HasInline}inline;{$ENDIF}
(**
* Return the LIBAVUTIL_VERSION_INT constant.
*)
function avutil_version(): cuint;
cdecl; external av__util;
(**
* Return the libavutil build-time configuration.
*)
function avutil_configuration(): PAnsiChar;
cdecl; external av__util;
(**
* Return the libavutil license.
*)
function avutil_license(): PAnsiChar;
cdecl; external av__util;
type
TAVMediaType = (
AVMEDIA_TYPE_UNKNOWN = -1,
AVMEDIA_TYPE_VIDEO,
AVMEDIA_TYPE_AUDIO,
AVMEDIA_TYPE_DATA,
AVMEDIA_TYPE_SUBTITLE,
AVMEDIA_TYPE_ATTACHMENT,
AVMEDIA_TYPE_NB
);
const
FF_LAMBDA_SHIFT = 7;
FF_LAMBDA_SCALE = (1<<FF_LAMBDA_SHIFT);
FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda
FF_LAMBDA_MAX = (256*128-1);
FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove
AV_NOPTS_VALUE = $8000000000000000;
AV_TIME_BASE = 1000000;
AV_TIME_BASE_Q : TAVRational = (num: 1; den: AV_TIME_BASE);
type
TAVPictureType = (
AV_PICTURE_TYPE_I = 1, ///< Intra
AV_PICTURE_TYPE_P, ///< Predicted
AV_PICTURE_TYPE_B, ///< Bi-dir predicted
AV_PICTURE_TYPE_S, ///< S(GMC)-VOP MPEG4
AV_PICTURE_TYPE_SI, ///< Switching Intra
AV_PICTURE_TYPE_SP, ///< Switching Predicted
AV_PICTURE_TYPE_BI ///< BI type
);
(**
* Return a single letter to describe the given picture type
* pict_type.
*
* @param[in] pict_type the picture type @return a single character
* representing the picture type, '?' if pict_type is unknown
*)
function av_get_picture_type_char(pict_type: TAVPictureType): Pchar;
cdecl; external av__util;
implementation
(* libavutil/common.h *)
function MKTAG(a, b, c, d: AnsiChar): integer; {$IFDEF HasInline}inline;{$ENDIF}
begin
Result := (ord(a) or (ord(b) shl 8) or (ord(c) shl 16) or (ord(d) shl 24));
end;
function MKBETAG(a, b, c, d: AnsiChar): integer; {$IFDEF HasInline}inline;{$ENDIF}
begin
Result := (ord(d) or (ord(c) shl 8) or (ord(b) shl 16) or (ord(a) shl 24));
end;
end.
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