gstreamer/tests/examples/va/main.c

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#include <stdlib.h>
#include <X11/Xlib.h>
#include <gdk/gdk.h>
#if defined (GDK_WINDOWING_X11)
#include <gdk/gdkx.h>
#else
#error "Only X11 is supported so far"
#endif
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <gst/app/gstappsink.h>
#include <gst/video/video.h>
#include <gst/va/gstvadisplay.h>
#include <va/va_x11.h>
#define GST_MAP_VA (GST_MAP_FLAG_LAST << 1)
static gchar **INPUT_FILES = NULL;
struct _app
{
GtkWidget *window;
GtkWidget *video;
GstElement *pipeline;
GstSample *sample;
GMutex mutex;
VADisplay va_dpy;
};
static GstBusSyncReply
context_handler (GstBus * bus, GstMessage * msg, gpointer data)
{
struct _app *app = data;
const gchar *context_type;
if (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_NEED_CONTEXT)
return GST_BUS_PASS;
gst_message_parse_context_type (msg, &context_type);
gst_println ("got need context %s", context_type);
if (g_strcmp0 (context_type, GST_VA_DISPLAY_HANDLE_CONTEXT_TYPE_STR) == 0) {
GstContext *context;
GstStructure *s;
context = gst_context_new (GST_VA_DISPLAY_HANDLE_CONTEXT_TYPE_STR, TRUE);
s = gst_context_writable_structure (context);
gst_structure_set (s, "va-display", G_TYPE_POINTER, app->va_dpy, NULL);
gst_element_set_context (GST_ELEMENT (msg->src), context);
gst_context_unref (context);
}
gst_message_unref (msg);
return GST_BUS_DROP;
}
static void
delete_event_cb (GtkWidget * widget, GdkEvent * event, gpointer data)
{
gtk_main_quit ();
}
static gboolean
draw_unlocked (GtkWidget * widget, struct _app *app)
{
GstBuffer *buffer;
GstCaps *caps;
GstMapInfo map_info;
GstVideoInfo vinfo;
VASurfaceID surface;
VAStatus va_status;
GstVideoRectangle src, dst, res;
gboolean ret = FALSE;
buffer = gst_sample_get_buffer (app->sample);
caps = gst_sample_get_caps (app->sample);
if (!gst_video_info_from_caps (&vinfo, caps))
return FALSE;
src.x = 0;
src.y = 0;
src.w = GST_VIDEO_INFO_WIDTH (&vinfo);
src.h = GST_VIDEO_INFO_HEIGHT (&vinfo);
if (!gst_buffer_map (buffer, &map_info, GST_MAP_READ | GST_MAP_VA))
return FALSE;
surface = (*(VASurfaceID *) map_info.data);
if (surface == VA_INVALID_ID)
goto bail;
dst.x = 0;
dst.y = 0;
dst.w = gtk_widget_get_allocated_width (widget);
dst.h = gtk_widget_get_allocated_height (widget);
gst_video_sink_center_rect (src, dst, &res, TRUE);
va_status = vaPutSurface (app->va_dpy, surface,
GDK_WINDOW_XID (gtk_widget_get_window (widget)),
src.x, src.y, src.w, src.h, res.x, res.y, res.w, res.h, NULL, 0, 0);
if (va_status != VA_STATUS_SUCCESS)
gst_printerrln ("failed vaPutSurface: %s", vaErrorStr (va_status));
else
ret = TRUE;
bail:
gst_buffer_unmap (buffer, &map_info);
return ret;
}
static gboolean
redraw_cb (gpointer data)
{
GtkWidget *video = data;
gtk_widget_queue_draw (video);
return G_SOURCE_REMOVE;
}
static gboolean
draw_cb (GtkWidget * widget, cairo_t * cr, gpointer data)
{
struct _app *app = data;
gboolean ret = TRUE;
g_mutex_lock (&app->mutex);
if (app->sample)
ret = draw_unlocked (widget, app);
g_mutex_unlock (&app->mutex);
if (!ret)
gst_printerrln ("failed to paint frame");
return FALSE;
}
static void
build_ui (struct _app *app)
{
app->window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (app->window), "VA X11 render");
g_signal_connect (app->window, "delete-event", G_CALLBACK (delete_event_cb),
app);
app->video = gtk_drawing_area_new ();
g_signal_connect (app->video, "draw", G_CALLBACK (draw_cb), app);
gtk_container_add (GTK_CONTAINER (app->window), app->video);
gtk_widget_show_all (app->window);
}
static GstFlowReturn
new_sample_cb (GstAppSink * sink, gpointer data)
{
struct _app *app = data;
g_mutex_lock (&app->mutex);
if (app->sample)
gst_sample_unref (app->sample);
app->sample = gst_app_sink_pull_sample (sink);
g_mutex_unlock (&app->mutex);
g_idle_add (redraw_cb, app->video);
return GST_FLOW_OK;
}
static gboolean
message_handler (GstBus * bus, GstMessage * msg, gpointer data)
{
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_EOS:
gtk_main_quit ();
break;
case GST_MESSAGE_ERROR:{
gchar *debug = NULL;
GError *err = NULL;
gst_message_parse_error (msg, &err, &debug);
gst_printerrln ("GStreamer error: %s\n%s", err->message,
debug ? debug : "");
if (debug)
g_free (debug);
if (err)
g_error_free (err);
gtk_main_quit ();
break;
}
default:
break;
}
return TRUE;
}
static gboolean
build_pipeline (struct _app *app)
{
GstElement *src, *sink;
GstCaps *caps;
GstBus *bus;
GstAppSinkCallbacks callbacks = {
.new_sample = new_sample_cb,
};
GError *err = NULL;
app->pipeline = gst_parse_launch ("filesrc name=src ! "
"parsebin ! vah264dec ! appsink name=sink", &err);
if (err) {
gst_printerrln ("Couldn't create pipeline: %s", err->message);
g_error_free (err);
return FALSE;
}
src = gst_bin_get_by_name (GST_BIN (app->pipeline), "src");
g_object_set (src, "location", INPUT_FILES[0], NULL);
gst_object_unref (src);
sink = gst_bin_get_by_name (GST_BIN (app->pipeline), "sink");
caps = gst_caps_from_string ("video/x-raw(memory:VAMemory)");
g_object_set (sink, "caps", caps, NULL);
gst_caps_unref (caps);
gst_app_sink_set_callbacks (GST_APP_SINK (sink), &callbacks, app, NULL);
gst_object_unref (sink);
bus = gst_pipeline_get_bus (GST_PIPELINE (app->pipeline));
gst_bus_set_sync_handler (bus, context_handler, app, NULL);
gst_bus_add_watch (bus, message_handler, app);
gst_object_unref (bus);
return TRUE;
}
static gboolean
parse_arguments (int *argc, char ***argv)
{
GOptionContext *ctxt;
GError *err = NULL;
const GOptionEntry options[] = {
{G_OPTION_REMAINING, 0, G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME_ARRAY,
&INPUT_FILES, "H.264 video files to play", NULL},
{NULL,},
};
ctxt = g_option_context_new ("— VA X11 render");
g_option_context_add_main_entries (ctxt, options, NULL);
g_option_context_add_group (ctxt, gtk_get_option_group (TRUE));
g_option_context_add_group (ctxt, gst_init_get_option_group ());
if (!g_option_context_parse (ctxt, argc, argv, &err)) {
gst_printerrln ("option parsing failed: %s", err->message);
g_error_free (err);
return FALSE;
}
g_option_context_free (ctxt);
return TRUE;
}
int
main (int argc, char **argv)
{
GdkDisplay *gdk_dpy;
GstBus *bus;
VAStatus va_status;
struct _app app = { NULL, };
int maj, min, ret = EXIT_FAILURE;
#if defined (GDK_WINDOWING_X11)
XInitThreads ();
#endif
if (!parse_arguments (&argc, &argv))
return EXIT_FAILURE;
if (!(INPUT_FILES && INPUT_FILES[0]))
goto gtk_failed;
gdk_dpy = gdk_display_get_default ();
if (!GDK_IS_X11_DISPLAY (gdk_dpy)) {
gst_printerrln ("This example is only for native X11");
goto gtk_failed;
}
g_mutex_init (&app.mutex);
if (!build_pipeline (&app))
goto gst_failed;
app.va_dpy = vaGetDisplay (GDK_DISPLAY_XDISPLAY (gdk_dpy));
va_status = vaInitialize (app.va_dpy, &maj, &min);
if (va_status != VA_STATUS_SUCCESS) {
gst_printerrln ("failed to initialize VA: %s", vaErrorStr (va_status));
goto va_failed;
}
build_ui (&app);
gst_element_set_state (app.pipeline, GST_STATE_PLAYING);
gtk_main ();
if (app.sample)
gst_sample_unref (app.sample);
gst_element_set_state (app.pipeline, GST_STATE_NULL);
bus = gst_pipeline_get_bus (GST_PIPELINE (app.pipeline));
gst_bus_remove_watch (bus);
gst_object_unref (bus);
ret = EXIT_SUCCESS;
va_failed:
gst_object_unref (app.pipeline);
vaTerminate (app.va_dpy);
gst_failed:
g_mutex_clear (&app.mutex);
gtk_failed:
g_strfreev (INPUT_FILES);
gst_deinit ();
return ret;
}