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spa: v4l2: add colorimetry support

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Michael Olbrich 2025-03-04 10:53:36 +01:00 • committed by Wim Taymans
parent 6294cbeb68
commit 41b831d0f8
1 changed files with 190 additions and 1 deletions
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191
spa/plugins/v4l2/v4l2-utils.c
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@ -2,6 +2,7 @@
/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */ /* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
/* SPDX-License-Identifier: MIT */ /* SPDX-License-Identifier: MIT */
#include <linux/videodev2.h>
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
@ -494,6 +495,162 @@ filter_framerate(struct v4l2_frmivalenum *frmival,
return true; return true;
} }
struct spa_video_colorimetry v4l2_colorimetry_map[] = {
{ /* V4L2_COLORSPACE_DEFAULT */
.range = SPA_VIDEO_COLOR_RANGE_UNKNOWN,
},
{ /* V4L2_COLORSPACE_SMPTE170M */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT601,
.transfer = SPA_VIDEO_TRANSFER_BT601,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_SMPTE170M,
},
{ /* V4L2_COLORSPACE_SMPTE240M */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_SMPTE240M,
.transfer = SPA_VIDEO_TRANSFER_SMPTE240M,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_SMPTE240M,
},
{ /* V4L2_COLORSPACE_REC709 */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT709,
.transfer = SPA_VIDEO_TRANSFER_BT709,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_BT709,
},
{ /* V4L2_COLORSPACE_BT878 (deprecated) */
.range = SPA_VIDEO_COLOR_RANGE_UNKNOWN,
},
{ /* V4L2_COLORSPACE_470_SYSTEM_M */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT601,
.transfer = SPA_VIDEO_TRANSFER_BT709,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_BT470M,
},
{ /* V4L2_COLORSPACE_470_SYSTEM_BG */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT601,
.transfer = SPA_VIDEO_TRANSFER_BT709,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_BT470BG,
},
{ /* V4L2_COLORSPACE_JPEG */
.range = SPA_VIDEO_COLOR_RANGE_0_255,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT601,
.transfer = SPA_VIDEO_TRANSFER_SRGB,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_BT709,
},
{ /* V4L2_COLORSPACE_SRGB */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT601,
.transfer = SPA_VIDEO_TRANSFER_SRGB,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_BT709,
},
{ /* V4L2_COLORSPACE_OPRGB */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT601,
.transfer = SPA_VIDEO_TRANSFER_ADOBERGB,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_ADOBERGB,
},
{ /* V4L2_COLORSPACE_BT2020 */
.range = SPA_VIDEO_COLOR_RANGE_16_235,
.matrix = SPA_VIDEO_COLOR_MATRIX_BT2020,
.transfer = SPA_VIDEO_TRANSFER_BT2020_12,
.primaries = SPA_VIDEO_COLOR_PRIMARIES_BT2020,
},
{ /* V4L2_COLORSPACE_RAW */
.range = SPA_VIDEO_COLOR_RANGE_UNKNOWN,
}
};
enum spa_video_color_range v4l2_color_range_map[] = {
SPA_VIDEO_COLOR_RANGE_UNKNOWN,
SPA_VIDEO_COLOR_RANGE_0_255,
SPA_VIDEO_COLOR_RANGE_16_235
};
enum spa_video_color_matrix v4l2_color_matrix_map[] = {
/* V4L2_YCBCR_ENC_DEFAULT */
SPA_VIDEO_COLOR_MATRIX_UNKNOWN,
/* V4L2_YCBCR_ENC_601 */
SPA_VIDEO_COLOR_MATRIX_BT601,
/* V4L2_YCBCR_ENC_709 */
SPA_VIDEO_COLOR_MATRIX_BT709,
/* V4L2_YCBCR_ENC_XV601 */
SPA_VIDEO_COLOR_MATRIX_BT601,
/* V4L2_YCBCR_ENC_XV709 */
SPA_VIDEO_COLOR_MATRIX_BT709,
/* V4L2_YCBCR_ENC_SYCC */
SPA_VIDEO_COLOR_MATRIX_BT601,
/* V4L2_YCBCR_ENC_BT2020 */
SPA_VIDEO_COLOR_MATRIX_BT2020,
/* V4L2_YCBCR_ENC_BT2020_CONST_LUM */
SPA_VIDEO_COLOR_MATRIX_BT2020,
/* V4L2_YCBCR_ENC_SMPTE240M */
SPA_VIDEO_COLOR_MATRIX_SMPTE240M
};
enum spa_video_transfer_function v4l2_transfer_function_map[] = {
/* V4L2_XFER_FUNC_DEFAULT */
SPA_VIDEO_TRANSFER_UNKNOWN,
/* V4L2_XFER_FUNC_709 */
SPA_VIDEO_TRANSFER_BT709,
/* V4L2_XFER_FUNC_SRGB */
SPA_VIDEO_TRANSFER_SRGB,
/* V4L2_XFER_FUNC_OPRGB */
SPA_VIDEO_TRANSFER_ADOBERGB,
/* V4L2_XFER_FUNC_SMPTE240M */
SPA_VIDEO_TRANSFER_SMPTE240M,
/* V4L2_XFER_FUNC_NONE */
SPA_VIDEO_TRANSFER_GAMMA10,
/* V4L2_XFER_FUNC_DCI_P3 */
SPA_VIDEO_TRANSFER_UNKNOWN,
/* V4L2_XFER_FUNC_SMPTE2084 */
SPA_VIDEO_TRANSFER_SMPTE2084
};
static bool
parse_colorimetry(struct impl *this, const struct v4l2_pix_format *pix, bool is_rgb,
struct spa_video_colorimetry *colorimetry)
{
struct spa_video_colorimetry c = { 0 };
if (pix->colorspace < V4L2_COLORSPACE_RAW)
c = v4l2_colorimetry_map[pix->colorspace];
if (c.range == SPA_VIDEO_COLOR_RANGE_UNKNOWN)
return false;
switch (pix->quantization) {
case V4L2_QUANTIZATION_FULL_RANGE:
case V4L2_QUANTIZATION_LIM_RANGE:
c.range = v4l2_color_range_map[pix->quantization];
break;
case V4L2_QUANTIZATION_DEFAULT:
if (is_rgb)
c.range = SPA_VIDEO_COLOR_RANGE_0_255;
break;
default:
spa_log_warn(this->log, "Unknown enum v4l2_quantization value %d",
pix->quantization);
c.range = SPA_VIDEO_COLOR_RANGE_UNKNOWN;
break;
}
if (pix->ycbcr_enc >= V4L2_YCBCR_ENC_SMPTE240M)
spa_log_warn(this->log, "Unknown enum v4l2_ycbcr_encoding value %d",
pix->ycbcr_enc);
else if (pix->ycbcr_enc > 0)
c.matrix = v4l2_color_matrix_map[pix->ycbcr_enc];
if (pix->xfer_func >= V4L2_XFER_FUNC_SMPTE2084)
spa_log_warn(this->log, "Unknown enum v4l2_xfer_func value %d",
pix->xfer_func);
else if (pix->xfer_func > 0)
c.transfer = v4l2_transfer_function_map[pix->xfer_func];
*colorimetry = c;
return true;
}
#define FOURCC_ARGS(f) (f)&0x7f,((f)>>8)&0x7f,((f)>>16)&0x7f,((f)>>24)&0x7f #define FOURCC_ARGS(f) (f)&0x7f,((f)>>8)&0x7f,((f)>>16)&0x7f,((f)>>24)&0x7f
static int static int
@ -512,7 +669,8 @@ spa_v4l2_enum_format(struct impl *this, int seq,
struct spa_pod_builder_state state; struct spa_pod_builder_state state;
struct spa_pod_frame f[2]; struct spa_pod_frame f[2];
struct spa_result_node_params result; struct spa_result_node_params result;
uint32_t count = 0; struct v4l2_format fmt;
uint32_t count = 0, try_width = 0, try_height = 0;
bool with_modifier; bool with_modifier;
if ((res = spa_v4l2_open(dev, this->props.device)) < 0) if ((res = spa_v4l2_open(dev, this->props.device)) < 0)
@ -742,6 +900,8 @@ do_frmsize_filter:
spa_pod_builder_rectangle(&b.b, spa_pod_builder_rectangle(&b.b,
port->frmsize.discrete.width, port->frmsize.discrete.width,
port->frmsize.discrete.height); port->frmsize.discrete.height);
try_width = port->frmsize.discrete.width;
try_height = port->frmsize.discrete.height;
} else if (port->frmsize.type == V4L2_FRMSIZE_TYPE_CONTINUOUS || } else if (port->frmsize.type == V4L2_FRMSIZE_TYPE_CONTINUOUS ||
port->frmsize.type == V4L2_FRMSIZE_TYPE_STEPWISE) { port->frmsize.type == V4L2_FRMSIZE_TYPE_STEPWISE) {
spa_pod_builder_push_choice(&b.b, &f[1], SPA_CHOICE_None, 0); spa_pod_builder_push_choice(&b.b, &f[1], SPA_CHOICE_None, 0);
@ -766,6 +926,35 @@ do_frmsize_filter:
port->frmsize.stepwise.max_height); port->frmsize.stepwise.max_height);
} }
spa_pod_builder_pop(&b.b, &f[1]); spa_pod_builder_pop(&b.b, &f[1]);
try_width = port->frmsize.stepwise.min_width;
try_height = port->frmsize.stepwise.min_height;
}
spa_zero(fmt);
fmt.type = port->fmtdesc.type;
fmt.fmt.pix.pixelformat = info->fourcc;
fmt.fmt.pix.field = V4L2_FIELD_ANY;
fmt.fmt.pix.width = try_width;
fmt.fmt.pix.height = try_height;
if ((res = xioctl(dev->fd, VIDIOC_TRY_FMT, &fmt)) < 0) {
spa_log_debug(this->log, "'%s' VIDIOC_TRY_FMT %08x: %m",
this->props.device, info->fourcc);
} else {
struct spa_video_colorimetry colorimetry;
bool is_rgb = spa_format_video_is_rgb(info->format);
if (parse_colorimetry(this, &fmt.fmt.pix, is_rgb, &colorimetry)) {
spa_pod_builder_add(&b.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);
}
} }
spa_pod_builder_prop(&b.b, SPA_FORMAT_VIDEO_framerate, 0); spa_pod_builder_prop(&b.b, SPA_FORMAT_VIDEO_framerate, 0);