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Diffstat (limited to '')
| -rw-r--r-- | us_maker_edition/src/lib/ffmpeg/avutil.pas | 586 |
1 files changed, 586 insertions, 0 deletions
diff --git a/us_maker_edition/src/lib/ffmpeg/avutil.pas b/us_maker_edition/src/lib/ffmpeg/avutil.pas new file mode 100644 index 00000000..959e8fda --- /dev/null +++ b/us_maker_edition/src/lib/ffmpeg/avutil.pas @@ -0,0 +1,586 @@ +(* + * 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: 50.15.2, revision 23059, Tue May 11 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 = 15; + 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 + ); +} + +(* libavutil/error.h *) + +{$IF LIBAVUTIL_VERSION >= 50012000} // >= 50.12.0 + +{* error handling *} + +const +{$IFDEF UNIX} + ENOENT = ESysENOENT; + EIO = ESysEIO; + ENOMEM = ESysENOMEM; + EINVAL = ESysEINVAL; + EDOM = ESysEDOM; + ENOSYS = ESysENOSYS; + EILSEQ = ESysEILSEQ; + EPIPE = ESysEPIPE; +{$ELSE} + ENOENT = 2; + EIO = 5; + ENOMEM = 12; + EINVAL = 22; + EPIPE = 32; // just an assumption. needs to be checked. + EDOM = 33; + {$IFDEF MSWINDOWS} + // Note: we assume that ffmpeg was compiled with MinGW. + // This must be changed if DLLs were compiled with cygwin. + ENOSYS = 40; // MSVC/MINGW: 40, CYGWIN: 88, LINUX/FPC: 38 + EILSEQ = 42; // MSVC/MINGW: 42, CYGWIN: 138, LINUX/FPC: 84 + {$ENDIF} +{$ENDIF} + +(** + * We need the sign of of the error, because some platforms have + * E* and errno already negated. The previous version failed + * with Delphi, because it needs EINVAL defined. + * Warning: This code is platform dependent and assumes constants + * to be 32 bit. + * This version does the following steps: + * 1) shr 30: shifts the sign bit to bit position 2 + * 2) and $00000002: sets all other bits to zero + * positive EINVAL gives 0, negative gives 2 + * 3) not: inverts all bits. This gives -1 and -3 + * 4) + 2: positive EINVAL gives 1, negative -1 + *) +const + AVERROR_SIGN = not((EINVAL shr 30) and $00000002) + 2; + +(* +#if EINVAL > 0 +#define AVERROR(e) (-(e)) {**< Returns a negative error code from a POSIX error code, to return from library functions. *} +#define AVUNERROR(e) (-(e)) {**< Returns a POSIX error code from a library function error return value. *} +#else +{* Some platforms have E* and errno already negated. *} +#define AVERROR(e) (e) +#define AVUNERROR(e) (e) +#endif +*) + +const + AVERROR_UNKNOWN = AVERROR_SIGN * EINVAL; (**< unknown error *) + AVERROR_IO = AVERROR_SIGN * EIO; (**< I/O error *) + AVERROR_NUMEXPECTED = AVERROR_SIGN * EDOM; (**< Number syntax expected in filename. *) + AVERROR_INVALIDDATA = AVERROR_SIGN * EINVAL; (**< invalid data found *) + AVERROR_NOMEM = AVERROR_SIGN * ENOMEM; (**< not enough memory *) + AVERROR_NOFMT = AVERROR_SIGN * EILSEQ; (**< unknown format *) + AVERROR_NOTSUPP = AVERROR_SIGN * ENOSYS; (**< Operation not supported. *) + AVERROR_NOENT = AVERROR_SIGN * ENOENT; (**< No such file or directory. *) +{$IF LIBAVCODEC_VERSION >= 52017000} // 52.17.0 + AVERROR_EOF = AVERROR_SIGN * EPIPE; (**< End of file. *) +{$IFEND} + // Note: function calls as constant-initializers are invalid + //AVERROR_PATCHWELCOME = -MKTAG('P','A','W','E'); {**< Not yet implemented in FFmpeg. Patches welcome. *} + AVERROR_PATCHWELCOME = -(ord('P') or (ord('A') shl 8) or (ord('W') shl 16) or (ord('E') shl 24)); +{$IFEND} + +{$IF LIBAVUTIL_VERSION >= 50013000} // >= 50.13.0 +(* + * Puts a description of the AVERROR code errnum in errbuf. + * In case of failure the global variable errno is set to indicate the + * error. Even in case of failure av_strerror() will print a generic + * error message indicating the errnum provided to errbuf. + * + * @param errbuf_size the size in bytes of errbuf + * @return 0 on success, a negative value if a description for errnum + * cannot be found + *) + +function av_strerror(errnum: cint; errbuf: Pchar; errbuf_size: cint): cint; + cdecl; external av__util; +{$IFEND} + +(* libavutil/pixfmt.h *) + +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 + PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white + 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, 4bpp, (msb)1B 2G 1R(lsb) + 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, 4bpp, (msb)1R 2G 1B(lsb) + 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 for UV + 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, big-endian + PIX_FMT_RGB48LE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, 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 is all from common.h KMS 9/6/2009 + +function MKTAG(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); +**} + +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; + +end. |