static gboolean
gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstBufferPool *newpool, *oldpool;
GstVideoInfo info;
GstStructure *structure;
static GstAllocationParams params = { 0, 0, 0, 15, };
guint size;
sink = GST_WAYLAND_SINK (bsink);
GST_LOG_OBJECT (sink, "set caps %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&info, caps))
goto invalid_format;
sink->video_width = info.width;
sink->video_height = info.height;
size = info.size;
/* create a new pool for the new configuration */
newpool = gst_wayland_buffer_pool_new (sink);
if (!newpool) {
GST_DEBUG_OBJECT (sink, "Failed to create new pool");
return FALSE;
}
structure = gst_buffer_pool_get_config (newpool);
gst_buffer_pool_config_set_params (structure, caps, size, 2, 0);
gst_buffer_pool_config_set_allocator (structure, NULL, ¶ms);
if (!gst_buffer_pool_set_config (newpool, structure))
goto config_failed;
oldpool = sink->pool;
sink->pool = newpool;
if (oldpool)
gst_object_unref (oldpool);
return TRUE;
invalid_format:
{
GST_DEBUG_OBJECT (sink,
"Could not locate image format from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (bsink, "failed setting config");
return FALSE;
}
}
static void
gst_wayland_sink_finalize (GObject * object)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (object);
GST_DEBUG_OBJECT (sink, "Finalizing the sink..");
if (sink->window)
destroy_window (sink->window);
if (sink->display)
destroy_display (sink->display);
if (sink->pool_lock) {
g_mutex_free (sink->pool_lock);
sink->pool_lock = NULL;
}
if (sink->buffer_pool) {
gst_wayland_bufferpool_clear (sink);
}
g_mutex_free (sink->wayland_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_wayland_sink_set_window_handle (GstVideoOverlay * overlay, guintptr handle)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (overlay);
struct wl_surface *surface = (struct wl_surface *) handle;
g_return_if_fail (sink != NULL);
g_mutex_lock (&sink->render_lock);
GST_DEBUG_OBJECT (sink, "Setting window handle %" GST_PTR_FORMAT,
(void *) handle);
g_clear_object (&sink->window);
if (handle) {
if (G_LIKELY (gst_wayland_sink_find_display (sink))) {
/* we cannot use our own display with an external window handle */
if (G_UNLIKELY (sink->display->own_display)) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_READ_WRITE,
("Application did not provide a wayland display handle"),
("waylandsink cannot use an externally-supplied surface without "
"an externally-supplied display handle. Consider providing a "
"display handle from your application with GstContext"));
} else {
sink->window = gst_wl_window_new_in_surface (sink->display, surface);
}
} else {
GST_ERROR_OBJECT (sink, "Failed to find display handle, "
"ignoring window handle");
}
}
g_mutex_unlock (&sink->render_lock);
}
static gboolean
gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
const GstStructure *structure;
GstCaps *allowed_caps;
gboolean ret = TRUE;
GST_LOG_OBJECT (sink, "set caps %" GST_PTR_FORMAT, caps);
allowed_caps = gst_pad_get_caps (GST_BASE_SINK_PAD (bsink));
if (!gst_caps_can_intersect (allowed_caps, caps))
return FALSE;
structure = gst_caps_get_structure (caps, 0);
ret &= gst_structure_get_int (structure, "width", &sink->video_width);
ret &= gst_structure_get_int (structure, "height", &sink->video_height);
if (!ret)
return FALSE;
gst_caps_replace (&sink->caps, caps);
return TRUE;
}
static void
gst_wayland_sink_finalize (GObject * object)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (object);
GST_DEBUG_OBJECT (sink, "Finalizing the sink..");
if (sink->last_buffer)
gst_buffer_unref (sink->last_buffer);
if (sink->display) {
/* see comment about this call in gst_wayland_sink_change_state() */
if (sink->pool) {
gst_wayland_compositor_release_all_buffers (GST_WAYLAND_BUFFER_POOL
(sink->pool));
}
g_object_unref (sink->display);
}
if (sink->window)
g_object_unref (sink->window);
if (sink->pool)
gst_object_unref (sink->pool);
if (sink->display_name)
g_free (sink->display_name);
g_mutex_clear (&sink->display_lock);
g_mutex_clear (&sink->render_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstStateChangeReturn
gst_wayland_sink_change_state (GstElement * element, GstStateChange transition)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_wayland_sink_find_display (sink))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_buffer_replace (&sink->last_buffer, NULL);
if (sink->window) {
if (gst_wl_window_is_toplevel (sink->window)) {
g_clear_object (&sink->window);
} else {
/* remove buffer from surface, show nothing */
gst_wl_window_render (sink->window, NULL, NULL);
}
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
g_mutex_lock (&sink->display_lock);
/* If we had a toplevel window, we most likely have our own connection
* to the display too, and it is a good idea to disconnect and allow
* potentially the application to embed us with GstVideoOverlay
* (which requires to re-use the same display connection as the parent
* surface). If we didn't have a toplevel window, then the display
* connection that we have is definitely shared with the application
* and it's better to keep it around (together with the window handle)
* to avoid requesting them again from the application if/when we are
* restarted (GstVideoOverlay behaves like that in other sinks)
*/
if (sink->display && !sink->window) { /* -> the window was toplevel */
g_clear_object (&sink->display);
}
g_mutex_unlock (&sink->display_lock);
g_clear_object (&sink->pool);
break;
default:
break;
}
return ret;
}
static void
gst_wayland_sink_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (object);
switch (prop_id) {
case PROP_WAYLAND_DISPLAY:
sink->display = g_value_get_pointer (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstCaps *
gst_wayland_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstWaylandSink *sink;
GstCaps *caps;
sink = GST_WAYLAND_SINK (bsink);
caps = gst_pad_get_pad_template_caps (GST_VIDEO_SINK_PAD (sink));
g_mutex_lock (&sink->display_lock);
if (sink->display) {
GValue list = G_VALUE_INIT;
GValue value = G_VALUE_INIT;
GArray *formats;
gint i;
enum wl_shm_format fmt;
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_STRING);
formats = sink->display->shm_formats;
for (i = 0; i < formats->len; i++) {
fmt = g_array_index (formats, uint32_t, i);
g_value_set_string (&value, gst_wl_shm_format_to_string (fmt));
gst_value_list_append_value (&list, &value);
}
caps = gst_caps_make_writable (caps);
gst_structure_set_value (gst_caps_get_structure (caps, 0), "format", &list);
GST_DEBUG_OBJECT (sink, "display caps: %" GST_PTR_FORMAT, caps);
}
g_mutex_unlock (&sink->display_lock);
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = intersection;
}
return caps;
}
static void
gst_wayland_sink_expose (GstVideoOverlay * overlay)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (overlay);
g_return_if_fail (sink != NULL);
GST_DEBUG_OBJECT (sink, "expose");
g_mutex_lock (&sink->render_lock);
if (sink->last_buffer && g_atomic_int_get (&sink->redraw_pending) == FALSE) {
GST_DEBUG_OBJECT (sink, "redrawing last buffer");
render_last_buffer (sink);
}
g_mutex_unlock (&sink->render_lock);
}
static GstFlowReturn
gst_wayland_sink_buffer_alloc (GstBaseSink * bsink, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstWlBuffer *buffer = NULL;
GstFlowReturn ret = GST_FLOW_OK;
GstStructure *structure = NULL;
GstCaps *desired_caps = NULL;
GST_LOG_OBJECT (sink, "a buffer of %u bytes was requested with caps "
"%" GST_PTR_FORMAT " and offset %" G_GUINT64_FORMAT, size, caps, offset);
desired_caps = gst_caps_copy (caps);
structure = gst_caps_get_structure (desired_caps, 0);
if (gst_structure_get_int (structure, "width", &sink->video_width) &&
gst_structure_get_int (structure, "height", &sink->video_height)) {
sink->bpp = size / sink->video_width / sink->video_height;
}
g_mutex_lock (sink->pool_lock);
while (sink->buffer_pool) {
buffer = (GstWlBuffer *) sink->buffer_pool->data;
if (buffer) {
sink->buffer_pool =
g_slist_delete_link (sink->buffer_pool, sink->buffer_pool);
} else {
break;
}
}
g_mutex_unlock (sink->pool_lock);
if (!buffer)
buffer = wayland_buffer_create (sink);
if (buffer)
gst_buffer_set_caps (GST_BUFFER (buffer), caps);
*buf = GST_BUFFER (buffer);
gst_caps_unref (desired_caps);
return ret;
}
static void
gst_wayland_sink_end_geometry_change (GstWaylandVideo * video)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (video);
g_return_if_fail (sink != NULL);
g_mutex_lock (&sink->render_lock);
if (!sink->window || !sink->window->area_subsurface) {
g_mutex_unlock (&sink->render_lock);
GST_INFO_OBJECT (sink,
"end_geometry_change called without window, ignoring");
return;
}
wl_subsurface_set_desync (sink->window->area_subsurface);
g_mutex_unlock (&sink->render_lock);
}
static void
gst_wayland_sink_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (object);
switch (prop_id) {
case PROP_DISPLAY:
GST_OBJECT_LOCK (sink);
g_value_set_string (value, sink->display_name);
GST_OBJECT_UNLOCK (sink);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_wayland_sink_set_context (GstElement * element, GstContext * context)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (element);
if (gst_context_has_context_type (context,
GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE)) {
g_mutex_lock (&sink->display_lock);
if (G_LIKELY (!sink->display))
gst_wayland_sink_set_display_from_context (sink, context);
else
GST_WARNING_OBJECT (element, "changing display handle is not supported");
g_mutex_unlock (&sink->display_lock);
}
if (GST_ELEMENT_CLASS (parent_class)->set_context)
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static void
gst_wayland_sink_finalize (GObject * object)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (object);
GST_DEBUG_OBJECT (sink, "Finalizing the sink..");
if (sink->window)
destroy_window (sink->window);
if (sink->display)
destroy_display (sink->display);
if (sink->shm_pool)
shm_pool_destroy (sink->shm_pool);
g_mutex_clear (&sink->wayland_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstCaps *
gst_wayland_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstWaylandSink *sink;
GstCaps *caps;
sink = GST_WAYLAND_SINK (bsink);
caps = gst_pad_get_pad_template_caps (GST_VIDEO_SINK_PAD (sink));
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = intersection;
}
return caps;
}
static gboolean
gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstStructure *config;
guint size, min_bufs, max_bufs;
config = gst_buffer_pool_get_config (sink->pool);
gst_buffer_pool_config_get_params (config, NULL, &size, &min_bufs, &max_bufs);
/* we do have a pool for sure (created in set_caps),
* so let's propose it anyway, but also propose the allocator on its own */
gst_query_add_allocation_pool (query, sink->pool, size, min_bufs, max_bufs);
gst_query_add_allocation_param (query, gst_wl_shm_allocator_get (), NULL);
gst_structure_free (config);
return TRUE;
}
static void
gst_wayland_sink_set_render_rectangle (GstVideoOverlay * overlay,
gint x, gint y, gint w, gint h)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (overlay);
g_return_if_fail (sink != NULL);
g_mutex_lock (&sink->render_lock);
if (!sink->window) {
g_mutex_unlock (&sink->render_lock);
GST_WARNING_OBJECT (sink,
"set_render_rectangle called without window, ignoring");
return;
}
GST_DEBUG_OBJECT (sink, "window geometry changed to (%d, %d) %d x %d",
x, y, w, h);
gst_wl_window_set_render_rectangle (sink->window, x, y, w, h);
g_mutex_unlock (&sink->render_lock);
}
static void
gst_wayland_sink_finalize (GObject * object)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (object);
GST_DEBUG_OBJECT (sink, "Finalizing the sink..");
if (sink->last_buffer)
gst_buffer_unref (sink->last_buffer);
if (sink->display)
g_object_unref (sink->display);
if (sink->window)
g_object_unref (sink->window);
if (sink->pool)
gst_object_unref (sink->pool);
g_free (sink->display_name);
g_mutex_clear (&sink->display_lock);
g_mutex_clear (&sink->render_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstFlowReturn
gst_wayland_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstBuffer *to_render;
GstWlMeta *meta;
GstFlowReturn ret = GST_FLOW_OK;
g_mutex_lock (&sink->render_lock);
GST_LOG_OBJECT (sink, "render buffer %p", buffer);
if (G_UNLIKELY (!sink->window)) {
/* ask for window handle. Unlock render_lock while doing that because
* set_window_handle & friends will lock it in this context */
g_mutex_unlock (&sink->render_lock);
gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (sink));
g_mutex_lock (&sink->render_lock);
if (sink->window) {
/* inform the window about our caps */
gst_wl_window_set_video_info (sink->window, &sink->video_info);
} else {
/* if we were not provided a window, create one ourselves */
sink->window =
gst_wl_window_new_toplevel (sink->display, &sink->video_info);
}
sink->video_info_changed = FALSE;
}
/* drop buffers until we get a frame callback */
if (g_atomic_int_get (&sink->redraw_pending) == TRUE)
goto done;
if (G_UNLIKELY (sink->video_info_changed)) {
gst_wl_window_set_video_info (sink->window, &sink->video_info);
sink->video_info_changed = FALSE;
}
/* now that we have for sure set the video info on the window, it must have
* a valid size, otherwise this means that the application has called
* set_window_handle() without calling set_render_rectangle(), which is
* absolutely necessary for us.
*/
if (G_UNLIKELY (sink->window->surface_width == 0 ||
sink->window->surface_height == 0))
goto no_window_size;
meta = gst_buffer_get_wl_meta (buffer);
if (meta && meta->pool->display == sink->display) {
GST_LOG_OBJECT (sink, "buffer %p from our pool, writing directly", buffer);
to_render = buffer;
} else {
GstMapInfo src;
GST_LOG_OBJECT (sink, "buffer %p not from our pool, copying", buffer);
if (!sink->pool)
goto no_pool;
if (!gst_buffer_pool_set_active (sink->pool, TRUE))
goto activate_failed;
ret = gst_buffer_pool_acquire_buffer (sink->pool, &to_render, NULL);
if (ret != GST_FLOW_OK)
goto no_buffer;
gst_buffer_map (buffer, &src, GST_MAP_READ);
gst_buffer_fill (to_render, 0, src.data, src.size);
gst_buffer_unmap (buffer, &src);
}
gst_buffer_replace (&sink->last_buffer, to_render);
render_last_buffer (sink);
if (buffer != to_render)
gst_buffer_unref (to_render);
goto done;
no_window_size:
{
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
("Window has no size set"),
("Make sure you set the size after calling set_window_handle"));
ret = GST_FLOW_ERROR;
goto done;
}
no_buffer:
{
GST_WARNING_OBJECT (sink, "could not create image");
goto done;
}
no_pool:
{
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
("Internal error: can't allocate images"),
("We don't have a bufferpool negotiated"));
ret = GST_FLOW_ERROR;
goto done;
}
activate_failed:
{
GST_ERROR_OBJECT (sink, "failed to activate bufferpool.");
ret = GST_FLOW_ERROR;
goto done;
}
done:
{
g_mutex_unlock (&sink->render_lock);
return ret;
}
}
static GstFlowReturn
gst_wayland_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstBuffer *to_render;
GstWlBuffer *wlbuffer;
GstFlowReturn ret = GST_FLOW_OK;
g_mutex_lock (&sink->render_lock);
GST_LOG_OBJECT (sink, "render buffer %p", buffer);
if (G_UNLIKELY (!sink->window)) {
/* ask for window handle. Unlock render_lock while doing that because
* set_window_handle & friends will lock it in this context */
g_mutex_unlock (&sink->render_lock);
gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (sink));
g_mutex_lock (&sink->render_lock);
if (!sink->window) {
/* if we were not provided a window, create one ourselves */
sink->window =
gst_wl_window_new_toplevel (sink->display, &sink->video_info);
}
}
/* drop buffers until we get a frame callback */
if (g_atomic_int_get (&sink->redraw_pending) == TRUE)
goto done;
/* make sure that the application has called set_render_rectangle() */
if (G_UNLIKELY (sink->window->render_rectangle.w == 0))
goto no_window_size;
wlbuffer = gst_buffer_get_wl_buffer (buffer);
if (G_LIKELY (wlbuffer && wlbuffer->display == sink->display)) {
GST_LOG_OBJECT (sink, "buffer %p has a wl_buffer from our display, "
"writing directly", buffer);
to_render = buffer;
} else {
GstMemory *mem;
struct wl_buffer *wbuf = NULL;
GST_LOG_OBJECT (sink, "buffer %p does not have a wl_buffer from our "
"display, creating it", buffer);
mem = gst_buffer_peek_memory (buffer, 0);
if (gst_is_wl_shm_memory (mem)) {
wbuf = gst_wl_shm_memory_construct_wl_buffer (mem, sink->display,
&sink->video_info);
}
if (wbuf) {
gst_buffer_add_wl_buffer (buffer, wbuf, sink->display);
to_render = buffer;
} else {
GstMapInfo src;
/* we don't know how to create a wl_buffer directly from the provided
* memory, so we have to copy the data to a memory that we know how
* to handle... */
GST_LOG_OBJECT (sink, "buffer %p cannot have a wl_buffer, "
"copying to wl_shm memory", buffer);
/* sink->pool always exists (created in set_caps), but it may not
* be active if upstream is not using it */
if (!gst_buffer_pool_is_active (sink->pool) &&
!gst_buffer_pool_set_active (sink->pool, TRUE))
goto activate_failed;
ret = gst_buffer_pool_acquire_buffer (sink->pool, &to_render, NULL);
if (ret != GST_FLOW_OK)
goto no_buffer;
/* the first time we acquire a buffer,
* we need to attach a wl_buffer on it */
wlbuffer = gst_buffer_get_wl_buffer (to_render);
if (G_UNLIKELY (!wlbuffer)) {
mem = gst_buffer_peek_memory (to_render, 0);
wbuf = gst_wl_shm_memory_construct_wl_buffer (mem, sink->display,
&sink->video_info);
if (G_UNLIKELY (!wbuf))
goto no_wl_buffer;
gst_buffer_add_wl_buffer (to_render, wbuf, sink->display);
}
gst_buffer_map (buffer, &src, GST_MAP_READ);
gst_buffer_fill (to_render, 0, src.data, src.size);
gst_buffer_unmap (buffer, &src);
}
}
/* drop double rendering */
if (G_UNLIKELY (to_render == sink->last_buffer)) {
GST_LOG_OBJECT (sink, "Buffer already being rendered");
goto done;
}
gst_buffer_replace (&sink->last_buffer, to_render);
render_last_buffer (sink);
if (buffer != to_render)
gst_buffer_unref (to_render);
goto done;
no_window_size:
{
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
("Window has no size set"),
("Make sure you set the size after calling set_window_handle"));
ret = GST_FLOW_ERROR;
goto done;
}
no_buffer:
{
GST_WARNING_OBJECT (sink, "could not create buffer");
goto done;
}
no_wl_buffer:
{
GST_ERROR_OBJECT (sink, "could not create wl_buffer out of wl_shm memory");
ret = GST_FLOW_ERROR;
goto done;
}
activate_failed:
{
GST_ERROR_OBJECT (sink, "failed to activate bufferpool.");
ret = GST_FLOW_ERROR;
goto done;
}
done:
{
g_mutex_unlock (&sink->render_lock);
return ret;
}
}
static gboolean
gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstWaylandSink *sink;
GstBufferPool *newpool;
GstVideoInfo info;
enum wl_shm_format format;
GArray *formats;
gint i;
GstStructure *structure;
sink = GST_WAYLAND_SINK (bsink);
GST_DEBUG_OBJECT (sink, "set caps %" GST_PTR_FORMAT, caps);
/* extract info from caps */
if (!gst_video_info_from_caps (&info, caps))
goto invalid_format;
format = gst_video_format_to_wl_shm_format (GST_VIDEO_INFO_FORMAT (&info));
if ((gint) format == -1)
goto invalid_format;
/* verify we support the requested format */
formats = sink->display->shm_formats;
for (i = 0; i < formats->len; i++) {
if (g_array_index (formats, uint32_t, i) == format)
break;
}
if (i >= formats->len)
goto unsupported_format;
/* create a new pool for the new configuration */
newpool = gst_video_buffer_pool_new ();
if (!newpool)
goto pool_failed;
structure = gst_buffer_pool_get_config (newpool);
gst_buffer_pool_config_set_params (structure, caps, info.size, 2, 0);
gst_buffer_pool_config_set_allocator (structure, gst_wl_shm_allocator_get (),
NULL);
if (!gst_buffer_pool_set_config (newpool, structure))
goto config_failed;
/* store the video info */
sink->video_info = info;
sink->video_info_changed = TRUE;
gst_object_replace ((GstObject **) & sink->pool, (GstObject *) newpool);
gst_object_unref (newpool);
return TRUE;
invalid_format:
{
GST_DEBUG_OBJECT (sink,
"Could not locate image format from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
unsupported_format:
{
GST_DEBUG_OBJECT (sink, "Format %s is not available on the display",
gst_wl_shm_format_to_string (format));
return FALSE;
}
pool_failed:
{
GST_DEBUG_OBJECT (sink, "Failed to create new pool");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (bsink, "failed setting config");
gst_object_unref (newpool);
return FALSE;
}
}
static GstStateChangeReturn
gst_wayland_sink_change_state (GstElement * element, GstStateChange transition)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_wayland_sink_find_display (sink))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_buffer_replace (&sink->last_buffer, NULL);
if (sink->window) {
if (gst_wl_window_is_toplevel (sink->window)) {
g_clear_object (&sink->window);
} else {
/* remove buffer from surface, show nothing */
wl_surface_attach (sink->window->surface, NULL, 0, 0);
wl_surface_damage (sink->window->surface, 0, 0,
sink->window->surface_width, sink->window->surface_height);
wl_surface_commit (sink->window->surface);
wl_display_flush (sink->display->display);
}
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
g_mutex_lock (&sink->display_lock);
/* If we had a toplevel window, we most likely have our own connection
* to the display too, and it is a good idea to disconnect and allow
* potentially the application to embed us with GstVideoOverlay
* (which requires to re-use the same display connection as the parent
* surface). If we didn't have a toplevel window, then the display
* connection that we have is definitely shared with the application
* and it's better to keep it around (together with the window handle)
* to avoid requesting them again from the application if/when we are
* restarted (GstVideoOverlay behaves like that in other sinks)
*/
if (sink->display && !sink->window) { /* -> the window was toplevel */
/* Force all buffers to return to the pool, regardless of
* whether the compositor has released them or not. We are
* going to kill the display, so we need to return all buffers
* to be destroyed before this happens.
* Note that this is done here instead of the pool destructor
* because the buffers hold a reference to the pool. Also,
* the buffers can only be unref'ed from the display's event loop
* and the pool holds a reference to the display. If we drop
* our references here, when the compositor releases the buffers,
* they will be unref'ed from the event loop thread, which will
* unref the pool and therefore the display, which will try to
* stop the thread from within itself and cause a deadlock.
*/
if (sink->pool) {
gst_wayland_compositor_release_all_buffers (GST_WAYLAND_BUFFER_POOL
(sink->pool));
}
g_clear_object (&sink->display);
g_clear_object (&sink->pool);
}
g_mutex_unlock (&sink->display_lock);
break;
default:
break;
}
return ret;
}
static gboolean
gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstBufferPool *pool;
GstStructure *config;
GstCaps *caps;
guint size;
gboolean need_pool;
gst_query_parse_allocation (query, &caps, &need_pool);
if (caps == NULL)
goto no_caps;
g_mutex_lock (&sink->wayland_lock);
if ((pool = sink->pool))
gst_object_ref (pool);
g_mutex_unlock (&sink->wayland_lock);
if (pool != NULL) {
GstCaps *pcaps;
/* we had a pool, check caps */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
if (!gst_caps_is_equal (caps, pcaps)) {
/* different caps, we can't use this pool */
gst_object_unref (pool);
pool = NULL;
}
gst_structure_free (config);
}
if (pool == NULL && need_pool) {
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps))
goto invalid_caps;
GST_DEBUG_OBJECT (sink, "create new pool");
pool = gst_wayland_buffer_pool_new (sink);
/* the normal size of a frame */
size = info.size;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, 2, 0);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
}
if (pool) {
gst_query_add_allocation_pool (query, pool, size, 2, 0);
gst_object_unref (pool);
}
return TRUE;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (bsink, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (bsink, "invalid caps specified");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (bsink, "failed setting config");
gst_object_unref (pool);
return FALSE;
}
}
static GstFlowReturn
gst_wayland_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstVideoRectangle src, dst, res;
GstBuffer *to_render;
GstWlMeta *meta;
GstFlowReturn ret;
struct window *window;
struct display *display;
GST_LOG_OBJECT (sink, "render buffer %p", buffer);
if (!sink->window)
create_window (sink, sink->display, sink->video_width, sink->video_height);
window = sink->window;
display = sink->display;
meta = gst_buffer_get_wl_meta (buffer);
if (window->redraw_pending) {
wl_display_dispatch (display->display);
}
if (meta && meta->sink == sink) {
GST_LOG_OBJECT (sink, "buffer %p from our pool, writing directly", buffer);
to_render = buffer;
} else {
GstMapInfo src;
GST_LOG_OBJECT (sink, "buffer %p not from our pool, copying", buffer);
if (!sink->pool)
goto no_pool;
if (!gst_buffer_pool_set_active (sink->pool, TRUE))
goto activate_failed;
ret = gst_buffer_pool_acquire_buffer (sink->pool, &to_render, NULL);
if (ret != GST_FLOW_OK)
goto no_buffer;
gst_buffer_map (buffer, &src, GST_MAP_READ);
gst_buffer_fill (to_render, 0, src.data, src.size);
gst_buffer_unmap (buffer, &src);
meta = gst_buffer_get_wl_meta (to_render);
}
src.w = sink->video_width;
src.h = sink->video_height;
dst.w = sink->window->width;
dst.h = sink->window->height;
gst_video_sink_center_rect (src, dst, &res, FALSE);
wl_surface_attach (sink->window->surface, meta->wbuffer, 0, 0);
wl_surface_damage (sink->window->surface, 0, 0, res.w, res.h);
window->redraw_pending = TRUE;
window->callback = wl_surface_frame (window->surface);
wl_callback_add_listener (window->callback, &frame_callback_listener, window);
wl_surface_commit (window->surface);
wl_display_dispatch (display->display);
if (buffer != to_render)
gst_buffer_unref (to_render);
return GST_FLOW_OK;
no_buffer:
{
GST_WARNING_OBJECT (sink, "could not create image");
return ret;
}
no_pool:
{
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
("Internal error: can't allocate images"),
("We don't have a bufferpool negotiated"));
return GST_FLOW_ERROR;
}
activate_failed:
{
GST_ERROR_OBJECT (sink, "failed to activate bufferpool.");
ret = GST_FLOW_ERROR;
return ret;
}
}
static GstFlowReturn
gst_wayland_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
gboolean mem_cpy = TRUE;
GstVideoRectangle src, dst, res;
GST_LOG_OBJECT (sink,
"render buffer %p, data = %p, timestamp = %" GST_TIME_FORMAT, buffer,
GST_BUFFER_DATA (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
if (!sink->window)
create_window (sink, sink->display, sink->video_width, sink->video_height);
if (sink->render_finish) {
if (GST_IS_WLBUFFER (buffer)) {
GstWlBuffer *tmp_buffer = (GstWlBuffer *) buffer;
/* Does it have a waylandbuffer ? */
if (tmp_buffer->wbuffer) {
mem_cpy = FALSE;
GST_DEBUG_OBJECT (sink, "we have a buffer (%p) we allocated "
"ourselves and it has a wayland buffer, no memcpy then", buffer);
sink->window->buffer = tmp_buffer->wbuffer;
} else {
/* No wayland buffer, that's a malloc */
GST_DEBUG_OBJECT (sink, "we have a buffer (%p) we allocated "
"ourselves but it does not hold a wayland buffer", buffer);
}
} else {
/* Not our baby! */
GST_DEBUG_OBJECT (sink, "we have a buffer (%p) we did not allocate",
buffer);
}
if (mem_cpy) {
GstWlBuffer *wlbuf = wayland_buffer_create (sink);
memcpy (GST_BUFFER_DATA (wlbuf), GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer));
sink->window->buffer = wlbuf->wbuffer;
}
src.w = sink->video_width;
src.h = sink->video_height;
dst.w = sink->window->width;
dst.h = sink->window->height;
gst_video_sink_center_rect (src, dst, &res, FALSE);
sink->render_finish = FALSE;
wl_surface_attach (sink->window->surface, sink->window->buffer, 0, 0);
wl_surface_damage (sink->window->surface, 0, 0, res.w, res.h);
if (sink->callback)
wl_callback_destroy (sink->callback);
sink->callback = wl_surface_frame (sink->window->surface);
wl_callback_add_listener (sink->callback, &frame_listener, sink);
wl_surface_commit (sink->window->surface);
} else
GST_LOG_OBJECT (sink,
"Waiting to get the signal from compositor to render the next frame..");
wl_display_dispatch (sink->display->display);
return GST_FLOW_OK;
}
