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Diffstat (limited to 'src/lib/ffmpeg7/swscale.pas')
| -rw-r--r-- | src/lib/ffmpeg7/swscale.pas | 465 |
1 files changed, 0 insertions, 465 deletions
diff --git a/src/lib/ffmpeg7/swscale.pas b/src/lib/ffmpeg7/swscale.pas deleted file mode 100644 index 9806fc85..00000000 --- a/src/lib/ffmpeg7/swscale.pas +++ /dev/null @@ -1,465 +0,0 @@ -(* - * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> - * - * FFmpeg 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 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * FFmpeg Pascal port - * - Ported by the UltraStar Deluxe Team - * - * Conversion of libswscale/swscale.h - * version: 0.14.1 - *) - -unit swscale; - -{$IFDEF FPC} - {$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} - {$linklib libswscale} -{$ENDIF} - -interface - -uses - ctypes, - avutil, - avcodec, - 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 *) - LIBSWSCALE_MAX_VERSION_MAJOR = 0; - LIBSWSCALE_MAX_VERSION_MINOR = 11; - LIBSWSCALE_MAX_VERSION_RELEASE = 0; - LIBSWSCALE_MAX_VERSION = (LIBSWSCALE_MAX_VERSION_MAJOR * VERSION_MAJOR) + - (LIBSWSCALE_MAX_VERSION_MINOR * VERSION_MINOR) + - (LIBSWSCALE_MAX_VERSION_RELEASE * VERSION_RELEASE); - -(* Check if linked versions are supported *) -{$IF (LIBSWSCALE_VERSION > LIBSWSCALE_MAX_VERSION)} -// {$MESSAGE Error 'Linked version of libswscale is not yet supported!'} -{$IFEND} - -type - TQuadCintArray = array[0..3] of cint; - PQuadCintArray = ^TQuadCintArray; - TCintArray = array[0..0] of cint; - PCintArray = ^TCintArray; - TPCuint8Array = array[0..0] of PCuint8; - PPCuint8Array = ^TPCuint8Array; - -const -{$ifndef FF_API_SWS_GETCONTEXT} - FF_API_SWS_GETCONTEXT = LIBSWSCALE_VERSION_MAJOR < 3; -{$endif} -{$ifndef FF_API_SWS_CPU_CAPS} - FF_API_SWS_CPU_CAPS = LIBSWSCALE_VERSION_MAJOR < 3; -{$endif} -{$ifndef FF_API_SWS_GETCONTEXT} - FF_API_SWS_FORMAT_NAME = LIBSWSCALE_VERSION_MAJOR < 3; -{$endif} - -(** - * Returns the LIBSWSCALE_VERSION_INT constant. - *) -function swscale_version(): cuint; - cdecl; external sw__scale; - -(** - * Returns the libswscale build-time configuration. - *) -function swscale_configuration(): PAnsiChar; - cdecl; external sw__scale; - -(** - * Returns the libswscale license. - *) -function swscale_license(): PAnsiChar; - cdecl; external sw__scale; - -const - (* values for the flags, the stuff on the command line is different *) - SWS_FAST_BILINEAR = 1; - SWS_BILINEAR = 2; - SWS_BICUBIC = 4; - SWS_X = 8; - SWS_POINT = $10; - SWS_AREA = $20; - SWS_BICUBLIN = $40; - SWS_GAUSS = $80; - SWS_SINC = $100; - SWS_LANCZOS = $200; - SWS_SPLINE = $400; - - SWS_SRC_V_CHR_DROP_MASK = $30000; - SWS_SRC_V_CHR_DROP_SHIFT = 16; - - SWS_PARAM_DEFAULT = 123456; - - SWS_PRINT_INFO = $1000; - - // the following 3 flags are not completely implemented - // internal chrominace subsampling info - SWS_FULL_CHR_H_INT = $2000; - // input subsampling info - SWS_FULL_CHR_H_INP = $4000; - SWS_DIRECT_BGR = $8000; - SWS_ACCURATE_RND = $40000; - SWS_BITEXACT = $80000; - -{$if FF_API_SWS_CPU_CAPS} -(** - * CPU caps are autodetected now, those flags - * are only provided for API compatibility. - *) - SWS_CPU_CAPS_MMX = $80000000; - SWS_CPU_CAPS_MMX2 = $20000000; - SWS_CPU_CAPS_3DNOW = $40000000; - SWS_CPU_CAPS_ALTIVEC = $10000000; - SWS_CPU_CAPS_BFIN = $01000000; -{$endif} - - SWS_MAX_REDUCE_CUTOFF = 0.002; - - SWS_CS_ITU709 = 1; - SWS_CS_FCC = 4; - SWS_CS_ITU601 = 5; - SWS_CS_ITU624 = 5; - SWS_CS_SMPTE170M = 5; - SWS_CS_SMPTE240M = 7; - SWS_CS_DEFAULT = 5; - -(** - * Returns a pointer to yuv<->rgb coefficients for the given colorspace - * suitable for sws_setColorspaceDetails(). - * - * @param colorspace One of the SWS_CS_* macros. If invalid, - * SWS_CS_DEFAULT is used. - *) -function sws_getCoefficients(colorspace: cint): Pcint; - cdecl; external sw__scale; - -type - - // when used for filters they must have an odd number of elements - // coeffs cannot be shared between vectors - PSwsVector = ^TSwsVector; - TSwsVector = record - coeff: PCdouble; // pointer to the list of coefficients - length: cint; // number of coefficients in the vector - end; - - // vectors can be shared - PSwsFilter = ^TSwsFilter; - TSwsFilter = record - lumH: PSwsVector; - lumV: PSwsVector; - chrH: PSwsVector; - chrV: PSwsVector; - end; - - PSwsContext = ^TSwsContext; - TSwsContext = record - {internal structure} - end; - -(** - * Returns a positive value if pix_fmt is a supported input format, 0 - * otherwise. - *) -function sws_isSupportedInput(pix_fmt: TAVPixelFormat): cint; - cdecl; external sw__scale; - -(** - * Returns a positive value if pix_fmt is a supported output format, 0 - * otherwise. - *) -function sws_isSupportedOutput(pix_fmt: TAVPixelFormat): cint; - cdecl; external sw__scale; - -(** - * Allocates an empty SwsContext. This must be filled and passed to - * sws_init_context(). For filling see AVOptions, options.c and - * sws_setColorspaceDetails(). - *) -function sws_alloc_context(): PSwsContext; - cdecl; external sw__scale; - -(** - * Initializes the swscaler context sws_context. - * - * @return zero or positive value on success, a negative value on - * error - *) -function sws_init_context(sws_context: PSwsContext; srcFilter: PSwsFilter; dstFilter: PSwsFilter): cint; - cdecl; external sw__scale; - -(** - * Frees the swscaler context swsContext. - * If swsContext is NULL, then does nothing. - *) -procedure sws_freeContext(swsContext: PSwsContext); - cdecl; external sw__scale; - -{$if FF_API_SWS_GETCONTEXT} -(** - * Allocates and returns a SwsContext. You need it to perform - * scaling/conversion operations using sws_scale(). - * - * @param srcW the width of the source image - * @param srcH the height of the source image - * @param srcFormat the source image format - * @param dstW the width of the destination image - * @param dstH the height of the destination image - * @param dstFormat the destination image format - * @param flags specify which algorithm and options to use for rescaling - * @return a pointer to an allocated context, or NULL in case of error - *) -function sws_getContext(srcW: cint; srcH: cint; srcFormat: TAVPixelFormat; - dstW: cint; dstH: cint; dstFormat: TAVPixelFormat; - flags: cint; srcFilter: PSwsFilter; - dstFilter: PSwsFilter; param: PCdouble): PSwsContext; - cdecl; external sw__scale; -{$endif} - -(** - * Scales the image slice in srcSlice and puts the resulting scaled - * slice in the image in dst. A slice is a sequence of consecutive - * rows in an image. - * - * Slices have to be provided in sequential order, either in - * top-bottom or bottom-top order. If slices are provided in - * non-sequential order the behavior of the function is undefined. - * - * @param context the scaling context previously created with - * sws_getContext() - * @param srcSlice the array containing the pointers to the planes of - * the source slice - * @param srcStride the array containing the strides for each plane of - * the source image - * @param srcSliceY the position in the source image of the slice to - * process, that is the number (counted starting from - * zero) in the image of the first row of the slice - * @param srcSliceH the height of the source slice, that is the number - * of rows in the slice - * @param dst the array containing the pointers to the planes of - * the destination image - * @param dstStride the array containing the strides for each plane of - * the destination image - * @return the height of the output slice - *) -function sws_scale(context: PSwsContext; {const} srcSlice: PPCuint8Array; {const} srcStride: PCintArray; - srcSliceY: cint; srcSliceH: cint; {const} dst: PPCuint8Array; {const} dstStride: PCintArray): cint; - cdecl; external sw__scale; - -{$if LIBSWSCALE_VERSION_MAJOR < 1} -// deprecated. Use sws_scale() instead. -function sws_scale_ordered(context: PSwsContext; {const} src: PPCuint8Array; - srcStride: PCintArray; srcSliceY: cint; srcSliceH: cint; - dst: PPCuint8Array; dstStride: PCintArray): cint; - cdecl; external sw__scale; deprecated; -{$ifend} - -(** - * @param inv_table the yuv2rgb coefficients, normally ff_yuv2rgb_coeffs[x] - * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235 - * @return -1 if not supported - *) -function sws_setColorspaceDetails(c: PSwsContext; inv_table: PQuadCintArray; - srcRange: cint; table: PQuadCintArray; dstRange: cint; - brightness: cint; contrast: cint; saturation: cint): cint; - cdecl; external sw__scale; - -(** - * @return -1 if not supported - *) -function sws_getColorspaceDetails(c: PSwsContext; var inv_table: PQuadCintArray; - var srcRange: cint; var table: PQuadCintArray; var dstRange: cint; - var brightness: cint; var contrast: cint; var saturation: cint): cint; - cdecl; external sw__scale; - -(** - * Allocates and returns an uninitialized vector with length coefficients. - *) -function sws_allocVec(length: cint): PSwsVector; - cdecl; external sw__scale; - -(** - * Returns a normalized Gaussian curve used to filter stuff - * quality=3 is high quality, lower is lower quality. - *) -function sws_getGaussianVec(variance: cdouble; quality: cdouble): PSwsVector; - cdecl; external sw__scale; - -(** - * Allocates and returns a vector with length coefficients, all - * with the same value c. - *) -function sws_getConstVec(c: cdouble; length: cint): PSwsVector; - cdecl; external sw__scale; - -(** - * Allocates and returns a vector with just one coefficient, with - * value 1.0. - *) -function sws_getIdentityVec: PSwsVector; - cdecl; external sw__scale; - -(** - * Scales all the coefficients of a by the scalar value. - *) -procedure sws_scaleVec(a: PSwsVector; scalar: cdouble); - cdecl; external sw__scale; - -(** - * Scales all the coefficients of a so that their sum equals height. - *) -procedure sws_normalizeVec(a: PSwsVector; height: cdouble); - cdecl; external sw__scale; - -procedure sws_convVec(a: PSwsVector; b: PSwsVector); - cdecl; external sw__scale; - -procedure sws_addVec(a: PSwsVector; b: PSwsVector); - cdecl; external sw__scale; - -procedure sws_subVec(a: PSwsVector; b: PSwsVector); - cdecl; external sw__scale; - -procedure sws_shiftVec(a: PSwsVector; shift: cint); - cdecl; external sw__scale; - -(** - * Allocates and returns a clone of the vector a, that is a vector - * with the same coefficients as a. - *) -function sws_cloneVec(a: PSwsVector): PSwsVector; - cdecl; external sw__scale; - -{$if LIBSWSCALE_VERSION_MAJOR < 1} -(** - * @deprecated Use sws_printVec2() instead. - *) -procedure sws_printVec(a: PSwsVector); - cdecl; external sw__scale; deprecated; -{$ifend} - -(** - * Prints with av_log() a textual representation of the vector a - * if log_level <= av_log_level. - *) -procedure sws_printVec2(a: PSwsVector; - log_ctx: PAVClass; // PAVClass is declared in avcodec.pas - log_level: cint); - cdecl; external sw__scale; - -procedure sws_freeVec(a: PSwsVector); - cdecl; external sw__scale; - -function sws_getDefaultFilter(lumaGBlur: cfloat; chromaGBlur: cfloat; - lumaSharpen: cfloat; chromaSharpen: cfloat; - chromaHShift: cfloat; chromaVShift: cfloat; - verbose: cint): PSwsFilter; - cdecl; external sw__scale; - -procedure sws_freeFilter(filter: PSwsFilter); - cdecl; external sw__scale; - -(** - * Checks if context can be reused, otherwise reallocates a new - * one. - * - * If context is NULL, just calls sws_getContext() to get a new - * context. Otherwise, checks if the parameters are the ones already - * saved in context. If that is the case, returns the current - * context. Otherwise, frees context and gets a new context with - * the new parameters. - * - * Be warned that srcFilter and dstFilter are not checked, they - * are assumed to remain the same. - *) -function sws_getCachedContext(context: PSwsContext; - srcW: cint; srcH: cint; srcFormat: TAVPixelFormat; - dstW: cint; dstH: cint; dstFormat: TAVPixelFormat; - flags: cint; srcFilter: PSwsFilter; - dstFilter: PSwsFilter; param: PCdouble): PSwsContext; - cdecl; external sw__scale; - -(** - * Converts an 8bit paletted frame into a frame with a color depth of 32-bits. - * - * The output frame will have the same packed format as the palette. - * - * @param src source frame buffer - * @param dst destination frame buffer - * @param num_pixels number of pixels to convert - * @param palette array with [256] entries, which must match color arrangement (RGB or BGR) of src - *) -procedure sws_convertPalette8ToPacked32({const} src: PPCuint8Array; - dst: PPCuint8Array; - num_pixels: clong; - {const} palette: PPCuint8Array); - cdecl; external sw__scale; - -(** - * Converts an 8bit paletted frame into a frame with a color depth of 24 bits. - * - * With the palette format "ABCD", the destination frame ends up with the format "ABC". - * - * @param src source frame buffer - * @param dst destination frame buffer - * @param num_pixels number of pixels to convert - * @param palette array with [256] entries, which must match color arrangement (RGB or BGR) of src - *) -procedure sws_convertPalette8ToPacked24({const} src: PPCuint8Array; - dst: PPCuint8Array; - num_pixels: clong; - {const} palette: PPCuint8Array); - cdecl; external sw__scale; - -implementation - -end. |