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719a93f4e4
libavutil/color_utils contains some avpriv_ symbols that map
enum AVTransferCharacteristic values to gamma-curve approximations and
to the actual transfer functions to invert them (i.e. -> linear).
There's two issues with this:
(1) avpriv is evil and should be avoided whenever possible
(2) libavutil/csp.h exposes a public API for handling color that
already handles primaries and matricies
I don't see any reason this API has to be private, so this commit takes
the functionality from avutil/color_utils and merges it into avutil/csp
with an exposed av_ API rather than the previous avpriv_ API.
Every reference to the previous API has been updated to point to the
new one. color_utils.h has been deleted as well. This should not break
any applications as it only contained avpriv_ symbols in the first
place, so nothing in that header could be referenced by other
applications.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*
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* Copyright (c) 2015 Kevin Wheatley <kevin.j.wheatley@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include "libavutil/csp.h"
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#include "libavutil/macros.h"
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int main(int argc, char *argv[])
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{
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int i, j;
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static const double test_data[] = {
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-0.1, -0.018053968510807, -0.01, -0.00449, 0.0, 0.00316227760, 0.005,
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0.009, 0.015, 0.1, 1.0, 52.37, 125.098765, 1999.11123, 6945.443,
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15123.4567, 19845.88923, 98678.4231, 99999.899998
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};
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for(i = 0; i < AVCOL_TRC_NB; i++) {
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av_csp_trc_function func = av_csp_trc_func_from_id(i);
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for(j = 0; j < FF_ARRAY_ELEMS(test_data); j++) {
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if(func != NULL) {
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double result = func(test_data[j]);
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printf("AVColorTransferCharacteristic=%d calling func(%f) expected=%f\n",
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i, test_data[j], result);
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}
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}
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}
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}
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