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avutil/csp: fix documentation of av_csp_trc_function

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This explanation was inaccurate and highly misleading. The new wording is taken
more or less directly from ITU-T H.273, and also matches my understanding of
these functions.
This commit is contained in:
Niklas Haas 2024-11-25 11:45:13 +01:00
parent 2f95bc3cb3
commit ec0489e35c
1 changed files with 6 additions and 2 deletions
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8
libavutil/csp.h
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@ -81,8 +81,12 @@ typedef struct AVColorPrimariesDesc {
} AVColorPrimariesDesc;
/**
* Function pointer representing a double -> double transfer function that performs
* an EOTF transfer inversion. This function outputs linear light.
* Function pointer representing a double -> double transfer function that
* performs either an OETF transfer function, or alternatively an inverse EOTF
* function (in particular, for SMPTE ST 2084 / PQ). This function inputs
* linear light, and outputs gamma encoded light.
*
* See ITU-T H.273 for more information.
*/
typedef double (*av_csp_trc_function)(double);