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spa: libcamera: add colorimetry support

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Libcamera equivalent to 41b831d0f ("spa: v4l2: add colorimetry support")

(cherry picked from commit 7e202a3844)
This commit is contained in:
Robert Mader 2025-07-09 21:46:20 +02:00
parent 8094cdf846
commit 74bd520224
1 changed files with 72 additions and 0 deletions
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72
spa/plugins/libcamera/libcamera-utils.cpp
View file

@ -279,6 +279,62 @@ static int score_size(Size &a, Size &b)
return x * x + y * y;
}
static void
parse_colorimetry(const ColorSpace& colorspace,
struct spa_video_colorimetry *colorimetry)
{
switch (colorspace.range) {
case ColorSpace::Range::Full:
colorimetry->range = SPA_VIDEO_COLOR_RANGE_0_255;
break;
case ColorSpace::Range::Limited:
colorimetry->range = SPA_VIDEO_COLOR_RANGE_16_235;
break;
}
switch (colorspace.ycbcrEncoding) {
case ColorSpace::YcbcrEncoding::None:
colorimetry->matrix = SPA_VIDEO_COLOR_MATRIX_RGB;
break;
case ColorSpace::YcbcrEncoding::Rec601:
colorimetry->matrix = SPA_VIDEO_COLOR_MATRIX_BT601;
break;
case ColorSpace::YcbcrEncoding::Rec709:
colorimetry->matrix = SPA_VIDEO_COLOR_MATRIX_BT709;
break;
case ColorSpace::YcbcrEncoding::Rec2020:
colorimetry->matrix = SPA_VIDEO_COLOR_MATRIX_BT2020;
break;
}
switch (colorspace.transferFunction) {
case ColorSpace::TransferFunction::Linear:
colorimetry->transfer = SPA_VIDEO_TRANSFER_UNKNOWN;
break;
case ColorSpace::TransferFunction::Srgb:
colorimetry->transfer = SPA_VIDEO_TRANSFER_SRGB;
break;
case ColorSpace::TransferFunction::Rec709:
colorimetry->transfer = SPA_VIDEO_TRANSFER_BT709;
break;
}
switch (colorspace.primaries) {
case ColorSpace::Primaries::Raw:
colorimetry->primaries = SPA_VIDEO_COLOR_PRIMARIES_UNKNOWN;
break;
case ColorSpace::Primaries::Smpte170m:
colorimetry->primaries = SPA_VIDEO_COLOR_PRIMARIES_SMPTE170M;
break;
case ColorSpace::Primaries::Rec709:
colorimetry->primaries = SPA_VIDEO_COLOR_PRIMARIES_BT709;
break;
case ColorSpace::Primaries::Rec2020:
colorimetry->primaries = SPA_VIDEO_COLOR_PRIMARIES_BT2020;
break;
}
}
static int
spa_libcamera_enum_format(struct impl *impl, struct port *port, int seq,
uint32_t start, uint32_t num, const struct spa_pod *filter)
@ -289,6 +345,7 @@ spa_libcamera_enum_format(struct impl *impl, struct port *port, int seq,
struct spa_pod_builder b = { 0 };
struct spa_pod_frame f[2];
struct spa_result_node_params result;
struct spa_video_colorimetry colorimetry = {};
struct spa_pod *fmt;
uint32_t i, count = 0, num_sizes;
PixelFormat format;
@ -300,6 +357,9 @@ spa_libcamera_enum_format(struct impl *impl, struct port *port, int seq,
const StreamConfiguration& streamConfig = impl->config->at(0);
const StreamFormats &formats = streamConfig.formats();
if (streamConfig.colorSpace)
parse_colorimetry(*streamConfig.colorSpace, &colorimetry);
result.id = SPA_PARAM_EnumFormat;
result.next = start;
@ -394,6 +454,18 @@ next_fmt:
spa_pod_builder_rectangle(&b, frameSize.width, frameSize.height);
}
if (streamConfig.colorSpace) {
spa_pod_builder_add(&b,
SPA_FORMAT_VIDEO_colorRange,
SPA_POD_Id(colorimetry.range),
SPA_FORMAT_VIDEO_colorMatrix,
SPA_POD_Id(colorimetry.matrix),
SPA_FORMAT_VIDEO_transferFunction,
SPA_POD_Id(colorimetry.transfer),
SPA_FORMAT_VIDEO_colorPrimaries,
SPA_POD_Id(colorimetry.primaries), 0);
}
fmt = (struct spa_pod*) spa_pod_builder_pop(&b, &f[0]);
if (spa_pod_filter(&b, &result.param, fmt, filter) < 0)