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vacompositor: add helper function to get formats from caps

Browse source 
Co-authored-by: Víctor Jáquez <vjaquez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5160>
This commit is contained in:
He Junyan 2023-08-08 15:42:26 +08:00 committed by GStreamer Marge Bot
parent c76999fe7b
commit e68724c8e0
1 changed files with 120 additions and 0 deletions
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120
subprojects/gst-plugins-bad/sys/va/gstvacompositor.c
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@ -49,6 +49,7 @@
#include <gst/va/gstva.h>
#include <gst/va/gstvavideoformat.h>
#include <gst/va/vasurfaceimage.h>
#include <gst/va/gstvavideoformat.h>
#include <gst/video/video.h>
#include <va/va_drmcommon.h>
@ -1189,6 +1190,125 @@ gst_va_compositor_fixate_src_caps (GstAggregator * agg, GstCaps * caps)
return gst_caps_fixate (ret);
}
static GstCaps *
_caps_from_format_and_feature (GstVideoFormat format,
guint64 modifier, const gchar * feature)
{
GstCaps *caps;
gboolean is_dma = g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_DMABUF) == 0;
caps = gst_caps_new_empty_simple ("video/x-raw");
if (is_dma) {
gchar *dma_str;
guint32 fourcc = gst_va_drm_fourcc_from_video_format (format);
dma_str = gst_video_dma_drm_fourcc_to_string (fourcc, modifier);
gst_caps_set_simple (caps, "format", G_TYPE_STRING, "DMA_DRM",
"drm-format", G_TYPE_STRING, dma_str, NULL);
g_free (dma_str);
} else {
gst_caps_set_simple (caps, "format", G_TYPE_STRING,
gst_video_format_to_string (format), NULL);
}
if (g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_DMABUF) == 0 ||
g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_VA) == 0)
gst_caps_set_features_simple (caps,
gst_caps_features_from_string (feature));
return caps;
}
static GArray *
_collect_formats_in_caps_by_feature (GstCaps * caps,
const gchar * feature, GArray ** ret_modifiers)
{
guint i, j, len, capslen;
GstCapsFeatures *features;
GstStructure *structure;
gboolean is_dma;
GstVideoFormat fmt;
guint64 modifier;
GArray *formats, *modifiers = NULL;
const GValue *format;
guint32 fourcc;
is_dma = (g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_DMABUF) == 0);
formats = g_array_new (FALSE, TRUE, sizeof (GstVideoFormat));
if (is_dma)
modifiers = g_array_new (FALSE, TRUE, sizeof (guint64));
capslen = gst_caps_get_size (caps);
for (i = 0; i < capslen; i++) {
features = gst_caps_get_features (caps, i);
if (!gst_caps_features_contains (features, feature))
continue;
structure = gst_caps_get_structure (caps, i);
format = (is_dma) ? gst_structure_get_value (structure, "drm-format")
: gst_structure_get_value (structure, "format");
if (!format)
continue;
if (GST_VALUE_HOLDS_LIST (format)) {
len = gst_value_list_get_size (format);
for (j = 0; j < len; j++) {
const GValue *val;
val = gst_value_list_get_value (format, j);
if (!G_VALUE_HOLDS_STRING (val))
continue;
if (is_dma) {
fourcc = gst_video_dma_drm_fourcc_from_string
(g_value_get_string (val), &modifier);
fmt = gst_va_video_format_from_drm_fourcc (fourcc);
} else {
fmt = gst_video_format_from_string (g_value_get_string (val));
}
if (fmt == GST_VIDEO_FORMAT_UNKNOWN)
continue;
g_array_append_val (formats, fmt);
if (is_dma)
g_array_append_val (modifiers, modifier);
}
} else if (G_VALUE_HOLDS_STRING (format)) {
if (is_dma) {
fourcc = gst_video_dma_drm_fourcc_from_string
(g_value_get_string (format), &modifier);
fmt = gst_va_video_format_from_drm_fourcc (fourcc);
} else {
fmt = gst_video_format_from_string (g_value_get_string (format));
}
if (fmt != GST_VIDEO_FORMAT_UNKNOWN) {
g_array_append_val (formats, fmt);
if (is_dma)
g_array_append_val (modifiers, modifier);
}
}
}
if (formats->len == 0)
g_clear_pointer (&formats, g_array_unref);
if (modifiers && modifiers->len == 0)
g_clear_pointer (&modifiers, g_array_unref);
if (ret_modifiers)
*ret_modifiers = modifiers;
else if (modifiers)
g_array_unref (modifiers);
return formats;
}
static GstVideoFormat
_choose_format (GstVideoFormat fmt1, GstVideoFormat fmt2)
{