diff options
author | Sven Gothel <[email protected]> | 2023-02-23 22:10:17 +0100 |
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committer | Sven Gothel <[email protected]> | 2023-02-23 22:10:17 +0100 |
commit | 55a3e7e548bbc3333318ee55dbab39f016b8d5f6 (patch) | |
tree | a754d6d621532328c15095619180c0ef4556aabc /make/stub_includes/ffmpeg/v0600/libavutil/csp.h | |
parent | dc48fb0f101dfefd3f4fb23f585d14de7fa9a6fe (diff) |
FFMPEGMediaPlayer: Replace old FFmpeg header w/ FFmpeg version 4.3, 5.1 and 6.0 (major version counts for binary compatibility)
Diffstat (limited to 'make/stub_includes/ffmpeg/v0600/libavutil/csp.h')
-rw-r--r-- | make/stub_includes/ffmpeg/v0600/libavutil/csp.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/make/stub_includes/ffmpeg/v0600/libavutil/csp.h b/make/stub_includes/ffmpeg/v0600/libavutil/csp.h new file mode 100644 index 000000000..73bce52bc --- /dev/null +++ b/make/stub_includes/ffmpeg/v0600/libavutil/csp.h @@ -0,0 +1,150 @@ +/* + * Copyright (c) 2015 Kevin Wheatley <[email protected]> + * Copyright (c) 2016 Ronald S. Bultje <[email protected]> + * Copyright (c) 2023 Leo Izen <[email protected]> + * + * This file is part of FFmpeg. + * + * 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 + */ + +#ifndef AVUTIL_CSP_H +#define AVUTIL_CSP_H + +#include "pixfmt.h" +#include "rational.h" + +/** + * @file + * Colorspace value utility functions for libavutil. + * @ingroup lavu_math_csp + * @author Ronald S. Bultje <[email protected]> + * @author Leo Izen <[email protected]> + * @author Kevin Wheatley <[email protected]> + */ + +/** + * @defgroup lavu_math_csp Colorspace Utility + * @ingroup lavu_math + * @{ + */ + +/** + * Struct containing luma coefficients to be used for RGB to YUV/YCoCg, or similar + * calculations. + */ +typedef struct AVLumaCoefficients { + AVRational cr, cg, cb; +} AVLumaCoefficients; + +/** + * Struct containing chromaticity x and y values for the standard CIE 1931 + * chromaticity definition. + */ +typedef struct AVCIExy { + AVRational x, y; +} AVCIExy; + +/** + * Struct defining the red, green, and blue primary locations in terms of CIE + * 1931 chromaticity x and y. + */ +typedef struct AVPrimaryCoefficients { + AVCIExy r, g, b; +} AVPrimaryCoefficients; + +/** + * Struct defining white point location in terms of CIE 1931 chromaticity x + * and y. + */ +typedef AVCIExy AVWhitepointCoefficients; + +/** + * Struct that contains both white point location and primaries location, providing + * the complete description of a color gamut. + */ +typedef struct AVColorPrimariesDesc { + AVWhitepointCoefficients wp; + AVPrimaryCoefficients prim; +} AVColorPrimariesDesc; + +/** + * Function pointer representing a double -> double transfer function that performs + * an EOTF transfer inversion. This function outputs linear light. + */ +typedef double (*av_csp_trc_function)(double); + +/** + * Retrieves the Luma coefficients necessary to construct a conversion matrix + * from an enum constant describing the colorspace. + * @param csp An enum constant indicating YUV or similar colorspace. + * @return The Luma coefficients associated with that colorspace, or NULL + * if the constant is unknown to libavutil. + */ +const AVLumaCoefficients *av_csp_luma_coeffs_from_avcsp(enum AVColorSpace csp); + +/** + * Retrieves a complete gamut description from an enum constant describing the + * color primaries. + * @param prm An enum constant indicating primaries + * @return A description of the colorspace gamut associated with that enum + * constant, or NULL if the constant is unknown to libavutil. + */ +const AVColorPrimariesDesc *av_csp_primaries_desc_from_id(enum AVColorPrimaries prm); + +/** + * Detects which enum AVColorPrimaries constant corresponds to the given complete + * gamut description. + * @see enum AVColorPrimaries + * @param prm A description of the colorspace gamut + * @return The enum constant associated with this gamut, or + * AVCOL_PRI_UNSPECIFIED if no clear match can be idenitified. + */ +enum AVColorPrimaries av_csp_primaries_id_from_desc(const AVColorPrimariesDesc *prm); + +/** + * Determine a suitable 'gamma' value to match the supplied + * AVColorTransferCharacteristic. + * + * See Apple Technical Note TN2257 (https://developer.apple.com/library/mac/technotes/tn2257/_index.html) + * + * This function returns the gamma exponent for the OETF. For example, sRGB is approximated + * by gamma 2.2, not by gamma 0.45455. + * + * @return Will return an approximation to the simple gamma function matching + * the supplied Transfer Characteristic, Will return 0.0 for any + * we cannot reasonably match against. + */ +double av_csp_approximate_trc_gamma(enum AVColorTransferCharacteristic trc); + +/** + * Determine the function needed to apply the given + * AVColorTransferCharacteristic to linear input. + * + * The function returned should expect a nominal domain and range of [0.0-1.0] + * values outside of this range maybe valid depending on the chosen + * characteristic function. + * + * @return Will return pointer to the function matching the + * supplied Transfer Characteristic. If unspecified will + * return NULL: + */ +av_csp_trc_function av_csp_trc_func_from_id(enum AVColorTransferCharacteristic trc); + +/** + * @} + */ + +#endif /* AVUTIL_CSP_H */ |