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v4l2: object: Add memory:DMABuf caps feature to template caps

Browse source 
In this patch, we introduce memory:DMABuf caps feature into V4L2
elements template caps. This is required to allow caps query,
allocation query and set_format to use it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7633>
This commit is contained in:
Nicolas Dufresne 2024-08-15 14:28:51 -04:00 committed by GStreamer Marge Bot
parent 14b5df4850
commit 8860eadffd
2 changed files with 82 additions and 61 deletions
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141
subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c
View file

@ -1459,7 +1459,8 @@ gst_v4l2_object_v4l2fourcc_is_codec (guint32 fourcc)
}
static GstStructure *
gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc,
GstStructure ** drm_template)
{
GstStructure *structure = NULL;
const gchar *bayer_format = NULL;
@ -1606,49 +1607,36 @@ gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
structure = gst_structure_new ("video/x-bayer", "format", G_TYPE_STRING,
bayer_format, NULL);
if (!structure) {
GstVideoFormat format;
format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);
if (drm_template)
*drm_template = NULL;
if (format <= GST_VIDEO_FORMAT_ENCODED)
if (!structure) {
const GstV4L2FormatDesc *desc;
desc = gst_v4l2_object_get_desc_from_v4l2fourcc (fourcc);
if (!desc) {
GST_DEBUG ("Unsupported V4L2 fourcc 0x%08x %" GST_FOURCC_FORMAT,
fourcc, GST_FOURCC_ARGS (fourcc));
else
structure = gst_structure_new ("video/x-raw",
"format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
} else {
if (desc->gst_format > GST_VIDEO_FORMAT_ENCODED) {
structure = gst_structure_new ("video/x-raw", "format", G_TYPE_STRING,
gst_video_format_to_string (desc->gst_format), NULL);
}
if (drm_template && desc->drm_fourcc) {
gchar *drm_format =
gst_video_dma_drm_fourcc_to_string (desc->drm_fourcc,
desc->drm_modifier);
*drm_template = gst_structure_new ("video/x-raw",
"format", G_TYPE_STRING, "DMA_DRM",
"drm-format", G_TYPE_STRING, drm_format, NULL);
g_free (drm_format);
}
}
}
return structure;
}
GstStructure *
gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
{
GstStructure *template;
gint i;
template = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
if (template == NULL)
goto done;
for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
if (gst_v4l2_formats[i].v4l2_format != fourcc)
continue;
if (gst_v4l2_formats[i].flags & GST_V4L2_RESOLUTION_AND_RATE) {
gst_structure_set (template,
"width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
"height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
}
break;
}
done:
return template;
}
gboolean
gst_v4l2_object_is_raw (GstV4l2Object * v4l2object)
{
@ -1668,22 +1656,32 @@ gst_v4l2_object_is_raw (GstV4l2Object * v4l2object)
/* Add an 'alternate' variant of the caps with the feature */
static void
add_alternate_variant (GstV4l2Object * v4l2object, GstCaps * caps,
GstStructure * structure)
GstStructure * structure, GstCapsFeatures * features)
{
GstStructure *alt_s;
if (v4l2object && v4l2object->never_interlaced)
return;
goto skip;
if (!gst_structure_has_name (structure, "video/x-raw"))
return;
goto skip;
alt_s = gst_structure_copy (structure);
gst_structure_set (alt_s, "interlace-mode", G_TYPE_STRING, "alternate", NULL);
gst_caps_append_structure_full (caps, alt_s,
gst_caps_features_new_static_str (GST_CAPS_FEATURE_FORMAT_INTERLACED,
NULL));
if (features)
gst_caps_features_add (features, GST_CAPS_FEATURE_FORMAT_INTERLACED);
else
features =
gst_caps_features_new_single_static_str
(GST_CAPS_FEATURE_FORMAT_INTERLACED);
gst_caps_append_structure_full (caps, alt_s, features);
return;
skip:
if (features)
gst_caps_features_free (features);
}
static void
@ -1715,25 +1713,29 @@ static GstCaps *
gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags,
const GstV4L2FormatDesc * formats, const guint len)
{
GstStructure *structure;
GstCaps *caps, *caps_interlaced;
GstCaps *caps, *sysmem_caps, *interlaced_caps, *interdma_caps;
guint i;
caps = gst_caps_new_empty ();
caps_interlaced = gst_caps_new_empty ();
sysmem_caps = gst_caps_new_empty ();
interlaced_caps = gst_caps_new_empty ();
interdma_caps = gst_caps_new_empty ();
for (i = 0; i < len; i++) {
GstStructure *sysmem_tmpl, *dmabuf_tmpl;
guint32 fourcc = formats[i].v4l2_format;
if ((formats[i].flags & flags) == 0)
continue;
structure = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
sysmem_tmpl =
gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc, &dmabuf_tmpl);
if (structure) {
if (sysmem_tmpl) {
GstStructure *alt_s = NULL;
if (formats[i].flags & GST_V4L2_RESOLUTION_AND_RATE) {
gst_structure_set (structure,
gst_structure_set (sysmem_tmpl,
"width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
"height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
@ -1741,31 +1743,51 @@ gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags,
switch (fourcc) {
case V4L2_PIX_FMT_RGB32:
alt_s = gst_structure_copy (structure);
alt_s = gst_structure_copy (sysmem_tmpl);
gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
break;
case V4L2_PIX_FMT_BGR32:
alt_s = gst_structure_copy (structure);
alt_s = gst_structure_copy (sysmem_tmpl);
gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
default:
break;
}
gst_caps_append_structure (caps, structure);
gst_caps_append_structure (sysmem_caps, sysmem_tmpl);
add_alternate_variant (NULL, interlaced_caps, sysmem_tmpl, NULL);
if (alt_s) {
gst_caps_append_structure (caps, alt_s);
add_alternate_variant (NULL, caps_interlaced, alt_s);
gst_caps_append_structure (sysmem_caps, alt_s);
add_alternate_variant (NULL, interlaced_caps, alt_s, NULL);
}
}
add_alternate_variant (NULL, caps_interlaced, structure);
if (dmabuf_tmpl) {
if (formats[i].flags & GST_V4L2_RESOLUTION_AND_RATE)
gst_structure_set (dmabuf_tmpl,
"width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
"height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
gst_caps_append_structure_full (caps, dmabuf_tmpl,
gst_caps_features_new_single_static_str
(GST_CAPS_FEATURE_MEMORY_DMABUF));
add_alternate_variant (NULL, interdma_caps, dmabuf_tmpl,
gst_caps_features_new_single_static_str
(GST_CAPS_FEATURE_MEMORY_DMABUF));
}
}
caps = gst_caps_simplify (caps);
caps_interlaced = gst_caps_simplify (caps_interlaced);
interdma_caps = gst_caps_simplify (interdma_caps);
sysmem_caps = gst_caps_simplify (sysmem_caps);
interlaced_caps = gst_caps_simplify (interlaced_caps);
return gst_caps_merge (caps, caps_interlaced);
gst_caps_append (caps, interdma_caps);
gst_caps_append (caps, sysmem_caps);
gst_caps_append (caps, interlaced_caps);
return caps;
}
GstCaps *
@ -5097,7 +5119,8 @@ gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
format = (struct v4l2_fmtdesc *) walk->data;
template = gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat);
template = gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat,
NULL);
if (!template) {
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
@ -5111,7 +5134,7 @@ gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
GstCaps *format_caps = gst_caps_new_empty ();
gst_caps_append_structure (format_caps, gst_structure_copy (template));
add_alternate_variant (v4l2object, format_caps, template);
add_alternate_variant (v4l2object, format_caps, template, NULL);
if (!gst_caps_can_intersect (format_caps, filter)) {
gst_caps_unref (format_caps);
@ -5129,7 +5152,7 @@ gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
gint i;
for (i = 0; i < gst_caps_get_size (tmp); i++) {
GstStructure *s = gst_caps_get_structure (tmp, i);
add_alternate_variant (v4l2object, interlaced_caps, s);
add_alternate_variant (v4l2object, interlaced_caps, s, NULL);
}
gst_caps_append (caps, tmp);

2
subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.h
View file

@ -325,8 +325,6 @@ gboolean gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery *
GstBufferPool * gst_v4l2_object_get_buffer_pool (GstV4l2Object * v4l2object);
GstStructure * gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc);
GstVideoFormat gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc);
GstFlowReturn gst_v4l2_object_poll (GstV4l2Object * v4l2object, GstClockTime timeout);