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| author | Carl Hetherington <cth@carlh.net> | 2019-01-31 01:34:56 +0000 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2019-01-31 01:34:56 +0000 |
| commit | d31bb9dd64630718fe7faa607e61be7ba88e9097 (patch) | |
| tree | cc0f9a702cdcec54fb34e0f992b93ffefa29a0d0 /src | |
| parent | 69752192994292e90a2dc347416fc5a1aeca9468 (diff) | |
Add some comments.
Diffstat (limited to 'src')
| -rw-r--r-- | src/lib/image.cc | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/lib/image.cc b/src/lib/image.cc index 41582f307..46c085ff2 100644 --- a/src/lib/image.cc +++ b/src/lib/image.cc @@ -185,6 +185,18 @@ Image::crop_scale_window ( SWS_CS_ITU709 }; + /* The 3rd parameter here is: + 0 -> source range MPEG (i.e. "video", 16-235) + 1 -> source range JPEG (i.e. "full", 0-255) + And the 5th: + 0 -> destination range MPEG (i.e. "video", 16-235) + 1 -> destination range JPEG (i.e. "full", 0-255) + + But remember: sws_setColorspaceDetails ignores + these parameters unless the image isYUV or isGray + (if it's neither, it uses video range for source + and destination). + */ sws_setColorspaceDetails ( scale_context, sws_getCoefficients (lut[yuv_to_rgb]), 0, @@ -271,6 +283,18 @@ Image::scale (dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_fo SWS_CS_ITU709 }; + /* The 3rd parameter here is: + 0 -> source range MPEG (i.e. "video", 16-235) + 1 -> source range JPEG (i.e. "full", 0-255) + And the 5th: + 0 -> destination range MPEG (i.e. "video", 16-235) + 1 -> destination range JPEG (i.e. "full", 0-255) + + But remember: sws_setColorspaceDetails ignores + these parameters unless the image isYUV or isGray + (if it's neither, it uses video range for source + and destination). + */ sws_setColorspaceDetails ( scale_context, sws_getCoefficients (lut[yuv_to_rgb]), 0, |