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v4l2object: Fully implement colorimetry support

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This fixes wrong mapping for sRGB as in GStreamer sRGB correctly
apply to RGB formats, while in V4L2 it's an alias for sYCC. Also
add support for the new quantization (range), ycbcr_encoding (matrix)
and xfer_func (transfer) enumeration.
This commit is contained in:
Nicolas Dufresne 2015-06-08 17:24:38 -04:00
parent 70e98a1a68
commit b5d66d68ce
1 changed files with 127 additions and 8 deletions
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135
sys/v4l2/gstv4l2object.c
View file

@ -1686,10 +1686,12 @@ gst_v4l2_object_get_interlace_mode (enum v4l2_field field,
static gboolean
gst_v4l2_object_get_colorspace (enum v4l2_colorspace colorspace,
GstVideoColorimetry * cinfo)
enum v4l2_quantization range, enum v4l2_ycbcr_encoding matrix,
enum v4l2_xfer_func transfer, GstVideoColorimetry * cinfo)
{
gboolean ret = FALSE;
gboolean ret = TRUE;
/* First step, set the defaults for each primaries */
switch (colorspace) {
case V4L2_COLORSPACE_SMPTE170M:
ret = gst_video_colorimetry_from_string (cinfo,
@ -1699,19 +1701,125 @@ gst_v4l2_object_get_colorspace (enum v4l2_colorspace colorspace,
ret = gst_video_colorimetry_from_string (cinfo,
GST_VIDEO_COLORIMETRY_BT709);
break;
case V4L2_COLORSPACE_SRGB:
case V4L2_COLORSPACE_JPEG:
/* This is in fact sYCC */
cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
break;
case V4L2_COLORSPACE_ADOBERGB:
GST_FIXME ("AdobeRGB is not yet supported by GStreamer");
/* We are missing the primaries and the transfer function */
ret = FALSE;
break;
case V4L2_COLORSPACE_BT2020:
ret = gst_video_colorimetry_from_string (cinfo,
GST_VIDEO_COLORIMETRY_BT2020);
break;
case V4L2_COLORSPACE_SMPTE240M:
ret = gst_video_colorimetry_from_string (cinfo,
GST_VIDEO_COLORIMETRY_SMPTE240M);
break;
case V4L2_COLORSPACE_SRGB:
ret = gst_video_colorimetry_from_string (cinfo,
GST_VIDEO_COLORIMETRY_SRGB);
case V4L2_COLORSPACE_470_SYSTEM_M:
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
break;
case V4L2_COLORSPACE_470_SYSTEM_BG:
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
break;
case V4L2_COLORSPACE_RAW:
/* Explicitly unknown */
cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_UNKNOWN;
break;
default:
GST_DEBUG ("Unknown enum v4l2_colorspace %d", colorspace);
ret = FALSE;
break;
}
if (!ret)
goto done;
/* Second step, apply any custom variation */
switch (range) {
case V4L2_QUANTIZATION_FULL_RANGE:
cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
break;
case V4L2_QUANTIZATION_LIM_RANGE:
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
break;
case V4L2_QUANTIZATION_DEFAULT:
/* nothing, just use defaults for colorspace */
break;
default:
GST_WARNING ("Unknown enum v4l2_quantization value %d", range);
cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
break;
}
switch (matrix) {
case V4L2_YCBCR_ENC_XV601:
case V4L2_YCBCR_ENC_SYCC:
GST_FIXME ("XV601 and SYCC not defined, assuming 601");
case V4L2_YCBCR_ENC_601:
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
break;
case V4L2_YCBCR_ENC_XV709:
GST_FIXME ("XV709 not defined, assuming 709");
case V4L2_YCBCR_ENC_709:
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
break;
case V4L2_YCBCR_ENC_BT2020_CONST_LUM:
GST_FIXME ("BT2020 with constant lumma is not defined, assuming BT2020");
case V4L2_YCBCR_ENC_BT2020:
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
break;
case V4L2_YCBCR_ENC_DEFAULT:
/* nothing, just use defaults for colorspace */
break;
default:
GST_WARNING ("Unknown enum v4l2_ycbcr_encoding value %d", matrix);
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
break;
}
switch (transfer) {
case V4L2_XFER_FUNC_709:
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
break;
case V4L2_XFER_FUNC_SRGB:
cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
break;
case V4L2_XFER_FUNC_ADOBERGB:
GST_FIXME ("AdobeRGB is not yet supported by GStreamer");
cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
break;
case V4L2_XFER_FUNC_SMPTE240M:
cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
break;
case V4L2_XFER_FUNC_NONE:
cinfo->transfer = GST_VIDEO_TRANSFER_GAMMA10;
break;
case V4L2_XFER_FUNC_DEFAULT:
/* nothing, just use defaults for colorspace */
break;
default:
GST_WARNING ("Unknown enum v4l2_xfer_func value %d", transfer);
cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
break;
}
done:
return ret;
}
@ -1823,13 +1931,24 @@ gst_v4l2_object_add_colorspace (GstV4l2Object * v4l2object, GstStructure * s,
if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
enum v4l2_colorspace colorspace;
enum v4l2_quantization range;
enum v4l2_ycbcr_encoding matrix;
enum v4l2_xfer_func transfer;
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
colorspace = fmt.fmt.pix_mp.colorspace;
else
range = fmt.fmt.pix_mp.quantization;
matrix = fmt.fmt.pix_mp.ycbcr_enc;
transfer = fmt.fmt.pix_mp.xfer_func;
} else {
colorspace = fmt.fmt.pix.colorspace;
range = fmt.fmt.pix.quantization;
matrix = fmt.fmt.pix.ycbcr_enc;
transfer = fmt.fmt.pix.xfer_func;
}
if (gst_v4l2_object_get_colorspace (colorspace, &cinfo)) {
if (gst_v4l2_object_get_colorspace (colorspace, range, matrix, transfer,
&cinfo)) {
g_value_init (&colorimetry, G_TYPE_STRING);
g_value_take_string (&colorimetry,
gst_video_colorimetry_to_string (&cinfo));