(*
* 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:
* Min. version: 49.0.1, revision 6577, Sat Oct 7 15:30:46 2006 UTC
* Max. version: 50.16.0, revision 23255, Sun May 30 22:05:00 2010 CET
*
* libavutil/mem.h:
* revision 16590, Tue Jan 13 23:44:16 2009 UTC
*
* libavutil/log.h:
* revision 16571, Tue Jan 13 00:14:43 2009 UTC
*
* include/keep pixfmt.h (change in revision 50.01.0)
* Maybe, the pixelformats are not needed, but it has not been checked.
* log.h is only partial.
*
*)
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,
mathematics,
rational,
{$IFDEF UNIX}
BaseUnix,
{$ENDIF}
UConfig;
const
(*
* IMPORTANT: The official FFmpeg C headers change very quickly. Often some
* of the data structures are changed so that they become incompatible with
* older header files. The Pascal headers have to be adjusted to those changes,
* otherwise the application might crash randomly or strange bugs (not
* necessarily related to video or audio due to buffer overflows etc.) might
* occur.
*
* In the past users reported problems with USDX that took hours to fix and
* the problem was an unsupported version of FFmpeg. So we decided to disable
* support for future versions of FFmpeg until the headers are revised by us
* for that version as they otherwise most probably will break USDX.
*
* If the headers do not yet support your FFmpeg version you may want to
* adjust the max. version numbers manually but please note: it may work but
* in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT
* for the game if the MAX. VERSION WAS CHANGED.
*
* The only safe way to support new versions of FFmpeg is to add the changes
* of the FFmpeg git repository C headers to the Pascal headers.
* You can accelerate this process by posting a patch with the git changes
* translated to Pascal to our bug tracker (please join our IRC chat before
* you start working on it). Simply adjusting the max. versions is NOT a valid
* fix.
*)
(* Max. supported version by this header *)
LIBAVUTIL_MAX_VERSION_MAJOR = 50;
LIBAVUTIL_MAX_VERSION_MINOR = 16;
LIBAVUTIL_MAX_VERSION_RELEASE = 0;
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 = 49;
LIBAVUTIL_MIN_VERSION_MINOR = 0;
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}
{$IF LIBAVUTIL_VERSION >= 49008000} // 49.8.0
(**
* Returns the LIBAVUTIL_VERSION_INT constant.
*)
function avutil_version(): cuint;
cdecl; external av__format;
{$IFEND}
{$IF LIBAVUTIL_VERSION >= 50004000} // >= 50.4.0
(**
* Returns the libavutil build-time configuration.
*)
function avutil_configuration(): PAnsiChar;
cdecl; external av__format;
(**
* Returns the libavutil license.
*)
function avutil_license(): PAnsiChar;
cdecl; external av__format;
{$IFEND}
{
TAVMediaType moved to avutil in LIBAVUTIL_VERSION 50.14.0
but moving it in the pascal headers was not really necessary
but caused problems. So, I (KMS) left it there.
type
TAVMediaType = (
AVMEDIA_TYPE_UNKNOWN = -1,
AVMEDIA_TYPE_VIDEO,
AVMEDIA_TYPE_AUDIO,
AVMEDIA_TYPE_DATA,
AVMEDIA_TYPE_SUBTITLE,
AVMEDIA_TYPE_ATTACHMENT,
AVMEDIA_TYPE_NB
);
}
{$INCLUDE error.pas}
(* libavutil/pixfmt.h up to revision 23144, May 16 2010 *)
type
(**
* Pixel format. Notes:
*
* PIX_FMT_RGB32 is handled in an endian-specific manner. An RGBA
* color is put together as:
* (A << 24) | (R << 16) | (G << 8) | B
* This is stored as BGRA on little-endian CPU architectures and ARGB on
* big-endian CPUs.
*
* When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
* image data is stored in AVFrame.data[0]. The palette is transported in
* AVFrame.data[1], is 1024 bytes long (256 4-byte entries) and is
* formatted the same as in PIX_FMT_RGB32 described above (i.e., it is
* also endian-specific). Note also that the individual RGB palette
* components stored in AVFrame.data[1] should be in the range 0..255.
* This is important as many custom PAL8 video codecs that were designed
* to run on the IBM VGA graphics adapter use 6-bit palette components.
*
* For all the 8bit per pixel formats, an RGB32 palette is in data[1] like
* for pal8. This palette is filled in automatically by the function
* allocating the picture.
*
* Note, make sure that all newly added big endian formats have pix_fmt&1==1
* and that all newly added little endian formats have pix_fmt&1==0
* this allows simpler detection of big vs little endian.
*)
PAVPixelFormat = ^TAVPixelFormat;
TAVPixelFormat = (
PIX_FMT_NONE= -1,
PIX_FMT_YUV420P, ///< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
PIX_FMT_YUYV422, ///< packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
PIX_FMT_RGB24, ///< packed RGB 8:8:8, 24bpp, RGBRGB...
PIX_FMT_BGR24, ///< packed RGB 8:8:8, 24bpp, BGRBGR...
PIX_FMT_YUV422P, ///< planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
PIX_FMT_YUV444P, ///< planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0
PIX_FMT_RGB32, ///< packed RGB 8:8:8, 32bpp, (msb)8A 8R 8G 8B(lsb), in CPU endianness
{$IFEND}
PIX_FMT_YUV410P, ///< planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
PIX_FMT_YUV411P, ///< planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
{$IF LIBAVUTIL_VERSION <= 50000000} // 50.00.0
PIX_FMT_RGB565, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), in CPU endianness
PIX_FMT_RGB555, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), in CPU endianness, most significant bit to 0
{$IFEND}
PIX_FMT_GRAY8, ///< Y , 8bpp
PIX_FMT_MONOWHITE, ///< Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb
PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb
PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette
PIX_FMT_YUVJ420P, ///< planar YUV 4:2:0, 12bpp, full scale (JPEG)
PIX_FMT_YUVJ422P, ///< planar YUV 4:2:2, 16bpp, full scale (JPEG)
PIX_FMT_YUVJ444P, ///< planar YUV 4:4:4, 24bpp, full scale (JPEG)
PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_UYVY422, ///< packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
PIX_FMT_UYYVYY411, ///< packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0
PIX_FMT_BGR32, ///< packed RGB 8:8:8, 32bpp, (msb)8A 8B 8G 8R(lsb), in CPU endianness
{$IFEND}
{$IF LIBAVUTIL_VERSION <= 50000000} // 50.00.0
PIX_FMT_BGR565, ///< packed RGB 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), in CPU endianness
PIX_FMT_BGR555, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), in CPU endianness, most significant bit to 1
{$IFEND}
PIX_FMT_BGR8, ///< packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
PIX_FMT_BGR4, ///< packed RGB 1:2:1, bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits
PIX_FMT_BGR4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
PIX_FMT_RGB8, ///< packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_RGB4, ///< packed RGB 1:2:1, bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits
PIX_FMT_RGB4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
PIX_FMT_NV12, ///< planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (first byte U and the following byte V)
PIX_FMT_NV21, ///< as above, but U and V bytes are swapped
{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0
PIX_FMT_RGB32_1, ///< packed RGB 8:8:8, 32bpp, (msb)8R 8G 8B 8A(lsb), in CPU endianness
PIX_FMT_BGR32_1, ///< packed RGB 8:8:8, 32bpp, (msb)8B 8G 8R 8A(lsb), in CPU endianness
{$ELSE} // 50.02.0
PIX_FMT_ARGB, ///< packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
PIX_FMT_RGBA, ///< packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
PIX_FMT_ABGR, ///< packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
PIX_FMT_BGRA, ///< packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
{$IFEND}
PIX_FMT_GRAY16BE, ///< Y , 16bpp, big-endian
PIX_FMT_GRAY16LE, ///< Y , 16bpp, little-endian
PIX_FMT_YUV440P, ///< planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
PIX_FMT_YUVJ440P, ///< planar YUV 4:4:0 full scale (JPEG)
PIX_FMT_YUVA420P, ///< planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
PIX_FMT_VDPAU_H264,///< H.264 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_MPEG1,///< MPEG-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_MPEG2,///< MPEG-2 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_WMV3,///< WMV3 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_VC1, ///< VC-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
{$IF LIBAVUTIL_VERSION >= 49015000} // 49.15.0
PIX_FMT_RGB48BE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big-endian
PIX_FMT_RGB48LE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as little-endian
{$IFEND}
{$IF LIBAVUTIL_VERSION >= 50001000} // 50.01.0
PIX_FMT_RGB565BE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
PIX_FMT_RGB565LE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
PIX_FMT_RGB555BE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), big-endian, most significant bit to 0
PIX_FMT_RGB555LE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), little-endian, most significant bit to 0
PIX_FMT_BGR565BE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian
PIX_FMT_BGR565LE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian
PIX_FMT_BGR555BE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), big-endian, most significant bit to 1
PIX_FMT_BGR555LE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), little-endian, most significant bit to 1
PIX_FMT_VAAPI_MOCO, ///< HW acceleration through VA API at motion compensation entry-point, Picture.data[3] contains a vaapi_render_state struct which contains macroblocks as well as various fields extracted from headers
PIX_FMT_VAAPI_IDCT, ///< HW acceleration through VA API at IDCT entry-point, Picture.data[3] contains a vaapi_render_state struct which contains fields extracted from headers
PIX_FMT_VAAPI_VLD, ///< HW decoding through VA API, Picture.data[3] contains a vaapi_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
{$IFEND}
PIX_FMT_NB ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
);
const
{$ifdef WORDS_BIGENDIAN}
{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0
PIX_FMT_RGBA = PIX_FMT_RGB32_1;
PIX_FMT_BGRA = PIX_FMT_BGR32_1;
PIX_FMT_ARGB = PIX_FMT_RGB32;
PIX_FMT_ABGR = PIX_FMT_BGR32;
{$ELSE} // 50.02.0
PIX_FMT_RGB32 = PIX_FMT_ARGB;
PIX_FMT_RGB32_1 = PIX_FMT_RGBA;
PIX_FMT_BGR32 = PIX_FMT_ABGR;
PIX_FMT_BGR32_1 = PIX_FMT_BGRA;
{$IFEND}
PIX_FMT_GRAY16 = PIX_FMT_GRAY16BE;
{$IF LIBAVUTIL_VERSION >= 49015000} // 49.15.0
PIX_FMT_RGB48 = PIX_FMT_RGB48BE;
{$IFEND}
{$IF LIBAVUTIL_VERSION >= 50001000} // 50.01.0
PIX_FMT_RGB565 = PIX_FMT_RGB565BE;
PIX_FMT_RGB555 = PIX_FMT_RGB555BE;
PIX_FMT_BGR565 = PIX_FMT_BGR565BE;
PIX_FMT_BGR555 = PIX_FMT_BGR555BE
{$IFEND}
{$else}
{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0
PIX_FMT_RGBA = PIX_FMT_BGR32;
PIX_FMT_BGRA = PIX_FMT_RGB32;
PIX_FMT_ARGB = PIX_FMT_BGR32_1;
PIX_FMT_ABGR = PIX_FMT_RGB32_1;
{$ELSE} // 50.02.0
PIX_FMT_RGB32 = PIX_FMT_BGRA;
PIX_FMT_RGB32_1 = PIX_FMT_ABGR;
PIX_FMT_BGR32 = PIX_FMT_RGBA;
PIX_FMT_BGR32_1 = PIX_FMT_ARGB;
{$IFEND}
PIX_FMT_GRAY16 = PIX_FMT_GRAY16LE;
{$IF LIBAVUTIL_VERSION >= 49015000} // 49.15.0
PIX_FMT_RGB48 = PIX_FMT_RGB48LE;
{$IFEND}
{$IF LIBAVUTIL_VERSION >= 50001000} // 50.01.0
PIX_FMT_RGB565 = PIX_FMT_RGB565LE;
PIX_FMT_RGB555 = PIX_FMT_RGB555LE;
PIX_FMT_BGR565 = PIX_FMT_BGR565LE;
PIX_FMT_BGR555 = PIX_FMT_BGR555LE;
{$IFEND}
{$ENDIF}
{$IF LIBAVUTIL_VERSION_MAJOR < 50} // 50.0.0
PIX_FMT_UYVY411 = PIX_FMT_UYYVYY411;
PIX_FMT_RGBA32 = PIX_FMT_RGB32;
PIX_FMT_YUV422 = PIX_FMT_YUYV422;
{$IFEND}
(* libavutil/common.h *) // until now MKTAG and MKBETAG is all from common.h KMS 19/5/2010
function MKTAG(a, b, c, d: AnsiChar): integer;
function MKBETAG(a, b, c, d: AnsiChar): integer;
(* libavutil/mem.h *)
(* memory handling functions *)
(**
* Allocates a block of size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU).
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if the block cannot
* be allocated.
* @see av_mallocz()
*)
function av_malloc(size: cuint): pointer;
cdecl; external av__util; {av_malloc_attrib av_alloc_size(1)}
(**
* Allocates or reallocates a block of memory.
* If ptr is NULL and size > 0, allocates a new block. If
* size is zero, frees the memory block pointed to by ptr.
* @param size Size in bytes for the memory block to be allocated or
* reallocated.
* @param ptr Pointer to a memory block already allocated with
* av_malloc(z)() or av_realloc() or NULL.
* @return Pointer to a newly reallocated block or NULL if the block
* cannot be allocated or the function is used to free the memory block.
* @see av_fast_realloc()
*)
function av_realloc(ptr: pointer; size: cuint): pointer;
cdecl; external av__util; {av_alloc_size(2)}
(**
* Frees a memory block which has been allocated with av_malloc(z)() or
* av_realloc().
* @param ptr Pointer to the memory block which should be freed.
* @note ptr = NULL is explicitly allowed.
* @note It is recommended that you use av_freep() instead.
* @see av_freep()
*)
procedure av_free(ptr: pointer);
cdecl; external av__util;
(**
* Allocates a block of size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU) and
* zeroes all the bytes of the block.
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if it cannot be allocated.
* @see av_malloc()
*)
function av_mallocz(size: cuint): pointer;
cdecl; external av__util; {av_malloc_attrib av_alloc_size(1)}
(**
* Duplicates the string s.
* @param s string to be duplicated.
* @return Pointer to a newly allocated string containing a
* copy of s or NULL if the string cannot be allocated.
*)
function av_strdup({const} s: PAnsiChar): PAnsiChar;
cdecl; external av__util; {av_malloc_attrib}
(**
* Frees a memory block which has been allocated with av_malloc(z)() or
* av_realloc() and set the pointer pointing to it to NULL.
* @param ptr Pointer to the pointer to the memory block which should
* be freed.
* @see av_free()
*)
procedure av_freep (ptr: pointer);
cdecl; external av__util;
(* libavutil/log.h *)
const
{$IF LIBAVUTIL_VERSION_MAJOR < 50}
AV_LOG_QUIET = -1;
AV_LOG_FATAL = 0;
AV_LOG_ERROR = 0;
AV_LOG_WARNING = 1;
AV_LOG_INFO = 1;
AV_LOG_VERBOSE = 1;
AV_LOG_DEBUG = 2;
{$ELSE}
AV_LOG_QUIET = -8;
(**
* Something went really wrong and we will crash now.
*)
AV_LOG_PANIC = 0;
(**
* Something went wrong and recovery is not possible.
* For example, no header was found for a format which depends
* on headers or an illegal combination of parameters is used.
*)
AV_LOG_FATAL = 8;
(**
* Something went wrong and cannot losslessly be recovered.
* However, not all future data is affected.
*)
AV_LOG_ERROR = 16;
(**
* Something somehow does not look correct. This may or may not
* lead to problems. An example would be the use of '-vstrict -2'.
*)
AV_LOG_WARNING = 24;
AV_LOG_INFO = 32;
AV_LOG_VERBOSE = 40;
(**
* Stuff which is only useful for libav* developers.
*)
AV_LOG_DEBUG = 48;
{$IFEND}
(**
* Sends the specified message to the log if the level is less than or equal
* to the current av_log_level. By default, all logging messages are sent to
* stderr. This behavior can be altered by setting a different av_vlog callback
* function.
*
* @param avcl A pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct.
* @param level The importance level of the message, lower values signifying
* higher importance.
* @param fmt The format string (printf-compatible) that specifies how
* subsequent arguments are converted to output.
* @see av_vlog
*)
{** to be translated if needed
#ifdef __GNUC__
void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
#else
void av_log(void*, int level, const char *fmt, ...);
#endif
void av_vlog(void*, int level, const char *fmt, va_list);
**}
function av_log_get_level(): cint;
cdecl; external av__util;
procedure av_log_set_level(level: cint);
cdecl; external av__util;
{** to be translated if needed
void av_log_set_callback(void (*)(void*, int, const char*, va_list));
void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
**}
{$IF LIBAVUTIL_VERSION >= 50015003} // 50.15.3
function av_default_item_name (ctx: pointer): Pchar;
cdecl; external av__util;
{$IFEND}
implementation
(* libavutil/common.h *)
function MKTAG(a, b, c, d: AnsiChar): integer;
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;
begin
Result := (ord(d) or (ord(c) shl 8) or (ord(b) shl 16) or (ord(a) shl 24));
end;
end.
