aboutsummaryrefslogtreecommitdiffstats
path: root/src/lib/ffmpeg-2.7/avutil.pas
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/ffmpeg-2.7/avutil.pas')
-rw-r--r--src/lib/ffmpeg-2.7/avutil.pas353
1 files changed, 353 insertions, 0 deletions
diff --git a/src/lib/ffmpeg-2.7/avutil.pas b/src/lib/ffmpeg-2.7/avutil.pas
new file mode 100644
index 00000000..a4d7ad63
--- /dev/null
+++ b/src/lib/ffmpeg-2.7/avutil.pas
@@ -0,0 +1,353 @@
+(*
+ * 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: 54.7.100
+ *
+ *)
+
+unit avutil;
+
+{$IFDEF FPC}
+ {$MODE DELPHI}
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+ {$MACRO ON} (* Turn macro support on *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$I ff_api-defines.inc} (* FF_API_* defines *)
+
+{$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 = 54;
+ LIBAVUTIL_MAX_VERSION_MINOR = 27;
+ LIBAVUTIL_MAX_VERSION_RELEASE = 100;
+ 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 = 54;
+ LIBAVUTIL_MIN_VERSION_MINOR = 27;
+ LIBAVUTIL_MIN_VERSION_RELEASE = 100;
+ 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}
+
+type
+{$IFNDEF FPC}
+ // defines for Delphi
+ size_t = cardinal;
+{$ENDIF}
+ Psize_t = ^size_t;
+
+(**
+ * 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;
+
+(**
+ * @addtogroup lavu_media Media Type
+ * @brief Media Type
+ *)
+
+type
+
+ PAVFile = pointer;
+
+ TAVMediaType = (
+ AVMEDIA_TYPE_UNKNOWN = -1, ///< Usually treated as AVMEDIA_TYPE_DATA
+ AVMEDIA_TYPE_VIDEO,
+ AVMEDIA_TYPE_AUDIO,
+ AVMEDIA_TYPE_DATA, ///< Opaque data information usually continuous
+ AVMEDIA_TYPE_SUBTITLE,
+ AVMEDIA_TYPE_ATTACHMENT, ///< Opaque data information usually sparse
+ AVMEDIA_TYPE_NB
+ );
+
+(**
+ * Return a string describing the media_type enum, NULL if media_type
+ * is unknown.
+ *)
+function av_get_media_type_string(media_type: TAVMediaType): PAnsiChar;
+ cdecl; external av__util;
+
+const
+ FF_LAMBDA_SHIFT = 7;
+ FF_LAMBDA_SCALE = (1 shl 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
+
+(**
+ * @brief Undefined timestamp value
+ *
+ * Usually reported by demuxer that work on containers that do not provide
+ * either pts or dts.
+ *)
+
+ AV_NOPTS_VALUE = $8000000000000000;
+
+(**
+ * Internal time base represented as integer
+ *)
+
+ AV_TIME_BASE = 1000000;
+
+(**
+ * Internal time base represented as fractional value
+ *)
+
+ AV_TIME_BASE_Q : TAVRational = (num: 1; den: AV_TIME_BASE);
+
+(**
+ * @}
+ * @}
+ * @defgroup lavu_picture Image related
+ *
+ * AVPicture types, pixel formats and basic image planes manipulation.
+ *
+ * @
+ *)
+
+type
+ TAVPictureType = (
+ AV_PICTURE_TYPE_NONE = 0, ///< Undefined
+ AV_PICTURE_TYPE_I, ///< Intra
+ AV_PICTURE_TYPE_P, ///< Predicted
+ AV_PICTURE_TYPE_B, ///< Bi-dir predicted
+ AV_PICTURE_TYPE_S, ///< S(GMC)-VOP MPEG4
+ AV_PICTURE_TYPE_SI, ///< Switching Intra
+ AV_PICTURE_TYPE_SP, ///< Switching Predicted
+ AV_PICTURE_TYPE_BI ///< BI type
+ );
+
+(**
+ * Return a single letter to describe the given picture type
+ * pict_type.
+ *
+ * @param[in] pict_type the picture type @return a single character
+ * representing the picture type, '?' if pict_type is unknown
+ *)
+function av_get_picture_type_char(pict_type: TAVPictureType): PAnsiChar;
+ cdecl; external av__util;
+
+(**
+ * Return x default pointer in case p is NULL.
+ *)
+function av_x_if_null(p: {const} pointer; x: {const} pointer): pointer; {$IFDEF HasInline}inline;{$ENDIF}
+
+(**
+ * Compute the length of an integer list.
+ *
+ * @param elsize size in bytes of each list element (only 1, 2, 4 or 8)
+ * @param term list terminator (usually 0 or -1)
+ * @param list pointer to the list
+ * @return length of the list, in elements, not counting the terminator
+ *)
+function av_int_list_length_for_size(elsize: cuint;
+ {const} list: pointer; term: cuint64): cuint; {av_pure}
+ cdecl; external av__util;
+
+(**
+ * Compute the length of an integer list.
+ *
+ * @param term list terminator (usually 0 or -1)
+ * @param list pointer to the list
+ * @return length of the list, in elements, not counting the terminator
+ *)
+function av_int_list_length({const} list: pointer; term: cuint64): cuint;
+
+(**
+ * Open a file using a UTF-8 filename.
+ * The API of this function matches POSIX fopen(), errors are returned through
+ * errno.
+ *)
+function av_fopen_utf8(path: {const} Pchar; mode: {const} Pchar): PAVFile;
+ cdecl; external av__util;
+
+(**
+ * Return the fractional representation of the internal time base.
+ *)
+function av_get_time_base_q: TAVRational;
+ cdecl; external av__util;
+
+{$INCLUDE libavutil/cpu.pas}
+
+{$INCLUDE libavutil/dict.pas}
+
+{$INCLUDE libavutil/error.pas}
+
+{$INCLUDE libavutil/mathematics.pas}
+
+{$INCLUDE libavutil/mem.pas}
+
+{$INCLUDE libavutil/log.pas}
+
+{$INCLUDE libavutil/pixfmt.pas}
+
+{$INCLUDE libavutil/samplefmt.pas}
+
+{$INCLUDE libavutil/opt.pas}
+
+{$INCLUDE libavutil/buffer.pas}
+
+{$INCLUDE libavutil/frame.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}
+
+implementation
+
+uses
+ SysUtils;
+
+function av_x_if_null(p: {const} pointer; x: {const} pointer): pointer; {$IFDEF HasInline}inline;{$ENDIF}
+begin
+ if p = nil then
+ Result := x
+ else
+ Result := p;
+end;
+
+function av_int_list_length({const} list: pointer; term: cuint64): cuint;
+begin
+ // KMS 2013: It is not really clear whether it should be sizeof(pointer) or sizeof(cint).
+ // Going for the larger one (pointer) should at least prevent buffer overflows.
+ // So, the result is either 4 byte or 8 byte.
+ Result := av_int_list_length_for_size(sizeof(pointer), list, term);
+end;
+
+(* 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;
+
+(* libavutil/error.h *)
+
+function av_make_error_string(errbuf: Pchar; errbuf_size: size_t; errnum: cint): Pchar; {$IFDEF HasInline}inline;{$ENDIF}
+begin
+ av_strerror(errnum, errbuf, errbuf_size);
+ av_make_error_string := errbuf;
+end;
+
+function av_err2str(errnum: cint): pchar; {$IFDEF HasInline}inline;{$ENDIF}
+var
+ errbuf: Pchar;
+begin
+ errbuf := stralloc(AV_ERROR_MAX_STRING_SIZE);
+ av_make_error_string(errbuf, AV_ERROR_MAX_STRING_SIZE, errnum);
+ av_err2str := errbuf;
+end;
+
+(* libavutil/mem.h *)
+
+function av_size_mult(a: size_t; b: size_t; r: Psize_t): size_t;
+ cdecl; external av__util;
+(* To Be Implemented, March 2012 KMS *)
+//function av_size_mult(a: size_t; b: size_t; r: pointer): size_t;
+//begin
+// {
+// size_t t = a * b;
+// /* Hack inspired from glibc: only try the division if nelem and elsize
+// * are both greater than sqrt(SIZE_MAX). */
+// if ((a | b) >= ((size_t)1 << (sizeof(size_t) * 4)) && a && t / a != b)
+// return AVERROR(EINVAL);
+// *r = t;
+// return 0;
+//}
+//end;
+
+function av_malloc_array(nmemb: size_t; size: size_t): pointer; {$IFDEF HasInline}inline;{$ENDIF} {av_alloc_size(1,2)}
+begin
+ if (size <= 0 ) or (nmemb >= maxint / size) then
+ av_malloc_array := NIL
+ else
+ av_malloc_array := av_malloc(nmemb * size);
+end;
+
+function av_mallocz_array(nmemb: size_t; size: size_t): pointer; {$IFDEF HasInline}inline;{$ENDIF} {av_alloc_size(1,2)}
+begin
+ if (size <= 0 ) or (nmemb >= maxint / size) then
+ av_mallocz_array := NIL
+ else
+ av_mallocz_array := av_mallocz(nmemb * size);
+end;
+
+end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 03:34:35 +0000