| /* GStreamer Wayland video sink |
| * |
| * Copyright (C) 2011 Intel Corporation |
| * Copyright (C) 2011 Sreerenj Balachandran <sreerenj.balachandran@intel.com> |
| * Copyright (C) 2012 Wim Taymans <wim.taymans@gmail.com> |
| * Copyright (C) 2014 Collabora Ltd. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the Free |
| * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301 USA. |
| */ |
| |
| /** |
| * SECTION:element-waylandsink |
| * |
| * The waylandsink is creating its own window and render the decoded video frames to that. |
| * Setup the Wayland environment as described in |
| * <ulink url="http://wayland.freedesktop.org/building.html">Wayland</ulink> home page. |
| * The current implementaion is based on weston compositor. |
| * |
| * <refsect2> |
| * <title>Example pipelines</title> |
| * |[ |
| * gst-launch-1.0 -v videotestsrc ! waylandsink |
| * ]| test the video rendering in wayland |
| * </refsect2> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include "gstwaylandsink.h" |
| #include "wlvideoformat.h" |
| #include "wlbuffer.h" |
| #include "wlshmallocator.h" |
| |
| #include <gst/wayland/wayland.h> |
| #include <gst/video/videooverlay.h> |
| |
| /* signals */ |
| enum |
| { |
| SIGNAL_0, |
| LAST_SIGNAL |
| }; |
| |
| /* Properties */ |
| enum |
| { |
| PROP_0, |
| PROP_DISPLAY |
| }; |
| |
| GST_DEBUG_CATEGORY (gstwayland_debug); |
| #define GST_CAT_DEFAULT gstwayland_debug |
| |
| static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE |
| ("{ BGRx, BGRA, RGBx, xBGR, xRGB, RGBA, ABGR, ARGB, RGB, BGR, " |
| "RGB16, BGR16, YUY2, YVYU, UYVY, AYUV, NV12, NV21, NV16, " |
| "YUV9, YVU9, Y41B, I420, YV12, Y42B, v308 }")) |
| ); |
| |
| static void gst_wayland_sink_get_property (GObject * object, |
| guint prop_id, GValue * value, GParamSpec * pspec); |
| static void gst_wayland_sink_set_property (GObject * object, |
| guint prop_id, const GValue * value, GParamSpec * pspec); |
| static void gst_wayland_sink_finalize (GObject * object); |
| |
| static GstStateChangeReturn gst_wayland_sink_change_state (GstElement * element, |
| GstStateChange transition); |
| static void gst_wayland_sink_set_context (GstElement * element, |
| GstContext * context); |
| |
| static GstCaps *gst_wayland_sink_get_caps (GstBaseSink * bsink, |
| GstCaps * filter); |
| static gboolean gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps); |
| static gboolean |
| gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query); |
| static gboolean gst_wayland_sink_show_frame (GstVideoSink * bsink, |
| GstBuffer * buffer); |
| |
| /* VideoOverlay interface */ |
| static void gst_wayland_sink_videooverlay_init (GstVideoOverlayInterface * |
| iface); |
| static void gst_wayland_sink_set_window_handle (GstVideoOverlay * overlay, |
| guintptr handle); |
| static void gst_wayland_sink_set_render_rectangle (GstVideoOverlay * overlay, |
| gint x, gint y, gint w, gint h); |
| static void gst_wayland_sink_expose (GstVideoOverlay * overlay); |
| |
| /* WaylandVideo interface */ |
| static void gst_wayland_sink_waylandvideo_init (GstWaylandVideoInterface * |
| iface); |
| static void gst_wayland_sink_begin_geometry_change (GstWaylandVideo * video); |
| static void gst_wayland_sink_end_geometry_change (GstWaylandVideo * video); |
| |
| #define gst_wayland_sink_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstWaylandSink, gst_wayland_sink, GST_TYPE_VIDEO_SINK, |
| G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY, |
| gst_wayland_sink_videooverlay_init) |
| G_IMPLEMENT_INTERFACE (GST_TYPE_WAYLAND_VIDEO, |
| gst_wayland_sink_waylandvideo_init)); |
| |
| static void |
| gst_wayland_sink_class_init (GstWaylandSinkClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstBaseSinkClass *gstbasesink_class; |
| GstVideoSinkClass *gstvideosink_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstbasesink_class = (GstBaseSinkClass *) klass; |
| gstvideosink_class = (GstVideoSinkClass *) klass; |
| |
| gobject_class->set_property = gst_wayland_sink_set_property; |
| gobject_class->get_property = gst_wayland_sink_get_property; |
| gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_wayland_sink_finalize); |
| |
| gst_element_class_add_static_pad_template (gstelement_class, &sink_template); |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "wayland video sink", "Sink/Video", |
| "Output to wayland surface", |
| "Sreerenj Balachandran <sreerenj.balachandran@intel.com>, " |
| "George Kiagiadakis <george.kiagiadakis@collabora.com>"); |
| |
| gstelement_class->change_state = |
| GST_DEBUG_FUNCPTR (gst_wayland_sink_change_state); |
| gstelement_class->set_context = |
| GST_DEBUG_FUNCPTR (gst_wayland_sink_set_context); |
| |
| gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_wayland_sink_get_caps); |
| gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_wayland_sink_set_caps); |
| gstbasesink_class->propose_allocation = |
| GST_DEBUG_FUNCPTR (gst_wayland_sink_propose_allocation); |
| |
| gstvideosink_class->show_frame = |
| GST_DEBUG_FUNCPTR (gst_wayland_sink_show_frame); |
| |
| g_object_class_install_property (gobject_class, PROP_DISPLAY, |
| g_param_spec_string ("display", "Wayland Display name", "Wayland " |
| "display name to connect to, if not supplied via the GstContext", |
| NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| } |
| |
| static void |
| gst_wayland_sink_init (GstWaylandSink * sink) |
| { |
| g_mutex_init (&sink->display_lock); |
| g_mutex_init (&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_property (GObject * object, |
| guint prop_id, const GValue * value, GParamSpec * pspec) |
| { |
| GstWaylandSink *sink = GST_WAYLAND_SINK (object); |
| |
| switch (prop_id) { |
| case PROP_DISPLAY: |
| GST_OBJECT_LOCK (sink); |
| sink->display_name = g_value_dup_string (value); |
| GST_OBJECT_UNLOCK (sink); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| 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); |
| } |
| |
| /* must be called with the display_lock */ |
| static void |
| gst_wayland_sink_set_display_from_context (GstWaylandSink * sink, |
| GstContext * context) |
| { |
| struct wl_display *display; |
| GError *error = NULL; |
| |
| display = gst_wayland_display_handle_context_get_handle (context); |
| sink->display = gst_wl_display_new_existing (display, FALSE, &error); |
| |
| if (error) { |
| GST_ELEMENT_WARNING (sink, RESOURCE, OPEN_READ_WRITE, |
| ("Could not set display handle"), |
| ("Failed to use the external wayland display: '%s'", error->message)); |
| g_error_free (error); |
| } |
| } |
| |
| static gboolean |
| gst_wayland_sink_find_display (GstWaylandSink * sink) |
| { |
| GstQuery *query; |
| GstMessage *msg; |
| GstContext *context = NULL; |
| GError *error = NULL; |
| gboolean ret = TRUE; |
| |
| g_mutex_lock (&sink->display_lock); |
| |
| if (!sink->display) { |
| /* first query upstream for the needed display handle */ |
| query = gst_query_new_context (GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE); |
| if (gst_pad_peer_query (GST_VIDEO_SINK_PAD (sink), query)) { |
| gst_query_parse_context (query, &context); |
| gst_wayland_sink_set_display_from_context (sink, context); |
| } |
| gst_query_unref (query); |
| |
| if (G_LIKELY (!sink->display)) { |
| /* now ask the application to set the display handle */ |
| msg = gst_message_new_need_context (GST_OBJECT_CAST (sink), |
| GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE); |
| |
| g_mutex_unlock (&sink->display_lock); |
| gst_element_post_message (GST_ELEMENT_CAST (sink), msg); |
| /* at this point we expect gst_wayland_sink_set_context |
| * to get called and fill sink->display */ |
| g_mutex_lock (&sink->display_lock); |
| |
| if (!sink->display) { |
| /* if the application didn't set a display, let's create it ourselves */ |
| GST_OBJECT_LOCK (sink); |
| sink->display = gst_wl_display_new (sink->display_name, &error); |
| GST_OBJECT_UNLOCK (sink); |
| |
| if (error) { |
| GST_ELEMENT_WARNING (sink, RESOURCE, OPEN_READ_WRITE, |
| ("Could not initialise Wayland output"), |
| ("Failed to create GstWlDisplay: '%s'", error->message)); |
| g_error_free (error); |
| ret = FALSE; |
| } |
| } |
| } |
| } |
| |
| g_mutex_unlock (&sink->display_lock); |
| |
| return ret; |
| } |
| |
| 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_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); |
| return; |
| } |
| g_mutex_unlock (&sink->display_lock); |
| } |
| |
| if (GST_ELEMENT_CLASS (parent_class)->set_context) |
| GST_ELEMENT_CLASS (parent_class)->set_context (element, context); |
| } |
| |
| 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); |
| |
| formats = sink->display->shm_formats; |
| for (i = 0; i < formats->len; i++) { |
| g_value_init (&value, G_TYPE_STRING); |
| fmt = g_array_index (formats, uint32_t, i); |
| g_value_set_static_string (&value, gst_wl_shm_format_to_string (fmt)); |
| gst_value_list_append_and_take_value (&list, &value); |
| } |
| |
| caps = gst_caps_make_writable (caps); |
| gst_structure_take_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 GstBufferPool * |
| gst_wayland_create_pool (GstWaylandSink * sink, GstCaps * caps) |
| { |
| GstBufferPool *pool = NULL; |
| GstStructure *structure; |
| gsize size = sink->video_info.size; |
| |
| pool = gst_video_buffer_pool_new (); |
| |
| structure = gst_buffer_pool_get_config (pool); |
| gst_buffer_pool_config_set_params (structure, caps, size, 2, 0); |
| gst_buffer_pool_config_set_allocator (structure, gst_wl_shm_allocator_get (), |
| NULL); |
| |
| if (!gst_buffer_pool_set_config (pool, structure)) { |
| g_object_unref (pool); |
| pool = NULL; |
| } |
| |
| return pool; |
| } |
| |
| 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; |
| |
| 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; |
| |
| /* store the video info */ |
| sink->video_info = info; |
| sink->video_info_changed = TRUE; |
| |
| /* create a new pool for the new configuration */ |
| newpool = gst_wayland_create_pool (sink, caps); |
| if (!newpool) |
| goto pool_failed; |
| |
| |
| gst_object_replace ((GstObject **) & sink->pool, (GstObject *) newpool); |
| gst_object_unref (newpool); |
| |
| return TRUE; |
| |
| invalid_format: |
| { |
| GST_ERROR_OBJECT (sink, |
| "Could not locate image format from caps %" GST_PTR_FORMAT, caps); |
| return FALSE; |
| } |
| unsupported_format: |
| { |
| GST_ERROR_OBJECT (sink, "Format %s is not available on the display", |
| gst_wl_shm_format_to_string (format)); |
| return FALSE; |
| } |
| pool_failed: |
| { |
| GST_ERROR_OBJECT (sink, "Failed to create new pool"); |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query) |
| { |
| GstWaylandSink *sink = GST_WAYLAND_SINK (bsink); |
| GstCaps *caps; |
| GstBufferPool *pool = NULL; |
| gboolean need_pool; |
| |
| gst_query_parse_allocation (query, &caps, &need_pool); |
| |
| if (need_pool) |
| pool = gst_wayland_create_pool (sink, caps); |
| |
| if (pool) { |
| gst_query_add_allocation_pool (query, pool, sink->video_info.size, 2, 0); |
| g_object_unref (pool); |
| } |
| |
| gst_query_add_allocation_param (query, gst_wl_shm_allocator_get (), NULL); |
| gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL); |
| |
| return TRUE; |
| } |
| |
| static void |
| frame_redraw_callback (void *data, struct wl_callback *callback, uint32_t time) |
| { |
| GstWaylandSink *sink = data; |
| |
| GST_LOG ("frame_redraw_cb"); |
| |
| g_mutex_lock (&sink->render_lock); |
| sink->redraw_pending = FALSE; |
| g_mutex_unlock (&sink->render_lock); |
| |
| wl_callback_destroy (callback); |
| } |
| |
| static const struct wl_callback_listener frame_callback_listener = { |
| frame_redraw_callback |
| }; |
| |
| /* must be called with the render lock */ |
| static void |
| render_last_buffer (GstWaylandSink * sink) |
| { |
| GstWlBuffer *wlbuffer; |
| const GstVideoInfo *info = NULL; |
| struct wl_surface *surface; |
| struct wl_callback *callback; |
| |
| wlbuffer = gst_buffer_get_wl_buffer (sink->last_buffer); |
| surface = gst_wl_window_get_wl_surface (sink->window); |
| |
| sink->redraw_pending = TRUE; |
| callback = wl_surface_frame (surface); |
| wl_callback_add_listener (callback, &frame_callback_listener, sink); |
| |
| if (G_UNLIKELY (sink->video_info_changed)) { |
| info = &sink->video_info; |
| sink->video_info_changed = FALSE; |
| } |
| gst_wl_window_render (sink->window, wlbuffer, info); |
| } |
| |
| static GstFlowReturn |
| gst_wayland_sink_show_frame (GstVideoSink * vsink, GstBuffer * buffer) |
| { |
| GstWaylandSink *sink = GST_WAYLAND_SINK (vsink); |
| 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, &sink->render_lock); |
| } |
| } |
| |
| /* drop buffers until we get a frame callback */ |
| if (sink->redraw_pending) |
| 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 { |
| GstVideoMeta *vmeta; |
| GstMemory *mem; |
| struct wl_buffer *wbuf = NULL; |
| |
| /* FIXME check all memory when introducing DMA-Buf */ |
| mem = gst_buffer_peek_memory (buffer, 0); |
| |
| /* update video info from video meta */ |
| vmeta = gst_buffer_get_video_meta (buffer); |
| if (vmeta) { |
| gint i; |
| |
| for (i = 0; i < vmeta->n_planes; i++) { |
| sink->video_info.offset[i] = vmeta->offset[i]; |
| sink->video_info.stride[i] = vmeta->stride[i]; |
| } |
| |
| sink->video_info.size = mem->size; |
| } |
| |
| GST_LOG_OBJECT (sink, "buffer %p does not have a wl_buffer from our " |
| "display, creating it", buffer); |
| |
| 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 { |
| GstVideoFrame src, dst; |
| GstVideoInfo src_info = sink->video_info; |
| |
| /* 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)) { |
| GstStructure *config; |
| GstCaps *caps; |
| |
| config = gst_buffer_pool_get_config (sink->pool); |
| gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL); |
| gst_buffer_pool_config_set_params (config, caps, sink->video_info.size, |
| 2, 0); |
| |
| /* This is a video pool, it should not fail with basic setings */ |
| if (!gst_buffer_pool_set_config (sink->pool, config) || |
| !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); |
| } |
| |
| if (!gst_video_frame_map (&dst, &sink->video_info, to_render, |
| GST_MAP_WRITE)) |
| goto dst_map_failed; |
| |
| if (!gst_video_frame_map (&src, &src_info, buffer, GST_MAP_READ)) { |
| gst_video_frame_unmap (&dst); |
| goto src_map_failed; |
| } |
| |
| gst_video_frame_copy (&dst, &src); |
| |
| gst_video_frame_unmap (&src); |
| gst_video_frame_unmap (&dst); |
| } |
| } |
| |
| /* 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; |
| } |
| src_map_failed: |
| { |
| GST_ELEMENT_ERROR (sink, RESOURCE, READ, |
| ("Video memory can not be read from userspace."), (NULL)); |
| ret = GST_FLOW_ERROR; |
| goto done; |
| } |
| dst_map_failed: |
| { |
| GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, |
| ("Video memory can not be written from userspace."), (NULL)); |
| ret = GST_FLOW_ERROR; |
| goto done; |
| } |
| done: |
| { |
| g_mutex_unlock (&sink->render_lock); |
| return ret; |
| } |
| } |
| |
| static void |
| gst_wayland_sink_videooverlay_init (GstVideoOverlayInterface * iface) |
| { |
| iface->set_window_handle = gst_wayland_sink_set_window_handle; |
| iface->set_render_rectangle = gst_wayland_sink_set_render_rectangle; |
| iface->expose = gst_wayland_sink_expose; |
| } |
| |
| 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); |
| |
| if (sink->window != NULL) { |
| GST_WARNING_OBJECT (sink, "changing window handle is not supported"); |
| return; |
| } |
| |
| 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, |
| &sink->render_lock); |
| } |
| } else { |
| GST_ERROR_OBJECT (sink, "Failed to find display handle, " |
| "ignoring window handle"); |
| } |
| } |
| |
| g_mutex_unlock (&sink->render_lock); |
| } |
| |
| 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_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 && !sink->redraw_pending) { |
| GST_DEBUG_OBJECT (sink, "redrawing last buffer"); |
| render_last_buffer (sink); |
| } |
| g_mutex_unlock (&sink->render_lock); |
| } |
| |
| static void |
| gst_wayland_sink_waylandvideo_init (GstWaylandVideoInterface * iface) |
| { |
| iface->begin_geometry_change = gst_wayland_sink_begin_geometry_change; |
| iface->end_geometry_change = gst_wayland_sink_end_geometry_change; |
| } |
| |
| static void |
| gst_wayland_sink_begin_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, |
| "begin_geometry_change called without window, ignoring"); |
| return; |
| } |
| |
| wl_subsurface_set_sync (sink->window->area_subsurface); |
| g_mutex_unlock (&sink->render_lock); |
| } |
| |
| 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 gboolean |
| plugin_init (GstPlugin * plugin) |
| { |
| GST_DEBUG_CATEGORY_INIT (gstwayland_debug, "waylandsink", 0, |
| " wayland video sink"); |
| |
| gst_wl_shm_allocator_register (); |
| |
| return gst_element_register (plugin, "waylandsink", GST_RANK_MARGINAL, |
| GST_TYPE_WAYLAND_SINK); |
| } |
| |
| GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, |
| GST_VERSION_MINOR, |
| waylandsink, |
| "Wayland Video Sink", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, |
| GST_PACKAGE_ORIGIN) |