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va: example: multiple-vpp: test direction change

Browse source 
If the driver supports it (iHD, so far) and the parameter -d is set,
the direction of the video will be changed randomly.

In the code you can select, at compilation time, if the direction
change is done by element's property or by pipeline events.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2074>
This commit is contained in:
Víctor Manuel Jáquez Leal 2021-03-12 12:36:52 +01:00
parent 0b2848fc32
commit 3c40ffc00f
1 changed files with 57 additions and 1 deletions
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58
tests/examples/va/multiple-vpp.c
View file

@ -3,9 +3,12 @@
#include <gst/gst.h>
#include <gst/video/video.h>
#define CHANGE_DIR_WITH_EVENT 0
static gint num_buffers = 50;
static gboolean camera = FALSE;
static gboolean randomcb = FALSE;
static gboolean randomdir = FALSE;
static GOptionEntry entries[] = {
{"num-buffers", 'n', 0, G_OPTION_ARG_INT, &num_buffers,
@ -14,6 +17,8 @@ static GOptionEntry entries[] = {
NULL},
{"random-cb", 'r', 0, G_OPTION_ARG_NONE, &randomcb,
"Change colorbalance randomly every second", NULL},
{"random-dir", 'd', 0, G_OPTION_ARG_NONE, &randomdir,
"Change video direction randomly every second (if supported)", NULL},
{NULL},
};
@ -186,7 +191,7 @@ build_pipeline (struct _app *app)
}
app->vpp = gst_bin_get_by_name (GST_BIN (app->pipeline), "vpp");
if (!randomcb)
if (!randomcb && !randomdir)
config_vpp (app->vpp);
app->caps = gst_bin_get_by_name (GST_BIN (app->pipeline), "caps");
@ -222,6 +227,50 @@ change_cb_randomly (gpointer data)
return G_SOURCE_CONTINUE;
}
static gboolean
change_dir_randomly (gpointer data)
{
struct _app *app = data;
GObjectClass *g_class = G_OBJECT_GET_CLASS (app->vpp);
GParamSpec *pspec;
pspec = g_object_class_find_property (g_class, "video-direction");
if (!pspec)
return G_SOURCE_REMOVE;
/* choose either sent direction by property or by event */
#if !CHANGE_DIR_WITH_EVENT
{
GEnumClass *enumclass;
guint idx, value;
enumclass = G_PARAM_SPEC_ENUM (pspec)->enum_class;
idx = g_random_int_range (0, enumclass->n_values);
value = enumclass->values[idx].value;
g_object_set (app->vpp, "video-direction", value, NULL);
}
#else
{
GstEvent *event;
guint idx;
static const gchar *orientation[] = {
"rotate-0", "rotate-90", "rotate-180", "rotate-270",
"flip-rotate-0", "flip-rotate-90", "flip-rotate-180", "flip-rotate-270",
"undefined",
};
idx = g_random_int_range (0, G_N_ELEMENTS (orientation));
event = gst_event_new_tag (gst_tag_list_new (GST_TAG_IMAGE_ORIENTATION,
orientation[idx], NULL));
gst_element_send_event (app->pipeline, event);
}
#endif
return G_SOURCE_CONTINUE;
}
static gboolean
parse_arguments (int *argc, char ***argv)
{
@ -262,6 +311,13 @@ main (int argc, char **argv)
if (randomcb)
g_timeout_add_seconds (1, change_cb_randomly, &app);
if (randomdir) {
#if CHANGE_DIR_WITH_EVENT
gst_util_set_object_arg (G_OBJECT (app.vpp), "video-direction", "auto");
#endif
g_timeout_add_seconds (1, change_dir_randomly, &app);
}
gst_element_set_state (app.pipeline, GST_STATE_PLAYING);
g_main_loop_run (app.loop);