/* * GStreamer * Copyright (C) 2003 Julien Moutte * Copyright (C) 2005,2006,2007 David A. Schleef * Copyright (C) 2008 Julien Isorce * Copyright (C) 2015 Matthew Waters * * 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 St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:element-glimagesink * * glimagesink renders video frames to a drawable on a local or remote * display using OpenGL. This element can receive a Window ID from the * application through the VideoOverlay interface and will then render video * frames in this drawable. * If no Window ID was provided by the application, the element will * create its own internal window and render into it. * * See the #GstGLDisplay documentation for a list of environment variables that * can override window/platform detection. * * * Scaling * * Depends on the driver, OpenGL handles hardware accelerated * scaling of video frames. This means that the element will just accept * incoming video frames no matter their geometry and will then put them to the * drawable scaling them on the fly. Using the #GstGLImageSink:force-aspect-ratio * property it is possible to enforce scaling with a constant aspect ratio, * which means drawing black borders around the video frame. * * * * Events * * Through the gl thread, glimagesink handle some events coming from the drawable * to manage its appearance even when the data is not flowing (GST_STATE_PAUSED). * That means that even when the element is paused, it will receive expose events * from the drawable and draw the latest frame with correct borders/aspect-ratio. * * * * Examples * |[ * gst-launch-1.0 -v videotestsrc ! video/x-raw ! glimagesink * ]| A pipeline to test hardware scaling. * No special opengl extension is used in this pipeline, that's why it should work * with OpenGL >= 1.1. That's the case if you are using the MESA3D driver v1.3. * |[ * gst-launch-1.0 -v videotestsrc ! video/x-raw,format=I420 ! glimagesink * ]| A pipeline to test hardware scaling and hardware colorspace conversion. * When your driver supports GLSL (OpenGL Shading Language needs OpenGL >= 2.1), * the 4 following format YUY2, UYVY, I420, YV12 and AYUV are converted to RGB32 * through some fragment shaders and using one framebuffer (FBO extension OpenGL >= 1.4). * If your driver does not support GLSL but supports MESA_YCbCr extension then * the you can use YUY2 and UYVY. In this case the colorspace conversion is automatically * made when loading the texture and therefore no framebuffer is used. * |[ * gst-launch-1.0 -v gltestsrc ! glimagesink * ]| A pipeline 100% OpenGL. * No special opengl extension is used in this pipeline, that's why it should work * with OpenGL >= 1.1. That's the case if you are using the MESA3D driver v1.3. * |[ * gst-plugins-bas/tests/examples/gl/generic/cube * ]| The graphic FPS scene can be greater than the input video FPS. * The graphic scene can be written from a client code through the * two glfilterapp properties. * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include "gstglimagesink.h" #include "gstglsinkbin.h" #include "gstglutils.h" #include GST_DEBUG_CATEGORY (gst_debug_glimage_sink); #define GST_CAT_DEFAULT gst_debug_glimage_sink #define DEFAULT_SHOW_PREROLL_FRAME TRUE #define DEFAULT_HANDLE_EVENTS TRUE #define DEFAULT_FORCE_ASPECT_RATIO TRUE #define DEFAULT_IGNORE_ALPHA TRUE #define DEFAULT_MULTIVIEW_MODE GST_VIDEO_MULTIVIEW_MODE_MONO #define DEFAULT_MULTIVIEW_FLAGS GST_VIDEO_MULTIVIEW_FLAGS_NONE #define DEFAULT_MULTIVIEW_DOWNMIX GST_GL_STEREO_DOWNMIX_ANAGLYPH_GREEN_MAGENTA_DUBOIS typedef GstGLSinkBin GstGLImageSinkBin; typedef GstGLSinkBinClass GstGLImageSinkBinClass; G_DEFINE_TYPE (GstGLImageSinkBin, gst_gl_image_sink_bin, GST_TYPE_GL_SINK_BIN); enum { PROP_BIN_0, PROP_BIN_ROTATE_METHOD, PROP_BIN_FORCE_ASPECT_RATIO, PROP_BIN_PIXEL_ASPECT_RATIO, PROP_BIN_HANDLE_EVENTS, PROP_BIN_CONTEXT, PROP_BIN_IGNORE_ALPHA, PROP_BIN_SHOW_PREROLL_FRAME, PROP_BIN_OUTPUT_MULTIVIEW_LAYOUT, PROP_BIN_OUTPUT_MULTIVIEW_FLAGS, PROP_BIN_OUTPUT_MULTIVIEW_DOWNMIX_MODE }; enum { SIGNAL_BIN_0, SIGNAL_BIN_CLIENT_DRAW, SIGNAL_BIN_CLIENT_RESHAPE, SIGNAL_BIN_LAST, }; static guint gst_gl_image_sink_bin_signals[SIGNAL_BIN_LAST] = { 0 }; static void gst_gl_image_sink_bin_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * param_spec) { g_object_set_property (G_OBJECT (GST_GL_SINK_BIN (object)->sink), param_spec->name, value); } static void gst_gl_image_sink_bin_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * param_spec) { g_object_get_property (G_OBJECT (GST_GL_SINK_BIN (object)->sink), param_spec->name, value); } static gboolean _on_client_reshape (GstGLImageSink * sink, GstGLContext * context, guint width, guint height, gpointer data) { gboolean ret; g_signal_emit (data, gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_RESHAPE], 0, context, width, height, &ret); return ret; } static gboolean _on_client_draw (GstGLImageSink * sink, GstGLContext * context, GstSample * sample, gpointer data) { gboolean ret; g_signal_emit (data, gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_DRAW], 0, context, sample, &ret); return ret; } #define DEFAULT_ROTATE_METHOD GST_GL_ROTATE_METHOD_IDENTITY #define GST_TYPE_GL_ROTATE_METHOD (gst_gl_rotate_method_get_type()) static const GEnumValue rotate_methods[] = { {GST_GL_ROTATE_METHOD_IDENTITY, "Identity (no rotation)", "none"}, {GST_GL_ROTATE_METHOD_90R, "Rotate clockwise 90 degrees", "clockwise"}, {GST_GL_ROTATE_METHOD_180, "Rotate 180 degrees", "rotate-180"}, {GST_GL_ROTATE_METHOD_90L, "Rotate counter-clockwise 90 degrees", "counterclockwise"}, {GST_GL_ROTATE_METHOD_FLIP_HORIZ, "Flip horizontally", "horizontal-flip"}, {GST_GL_ROTATE_METHOD_FLIP_VERT, "Flip vertically", "vertical-flip"}, {GST_GL_ROTATE_METHOD_FLIP_UL_LR, "Flip across upper left/lower right diagonal", "upper-left-diagonal"}, {GST_GL_ROTATE_METHOD_FLIP_UR_LL, "Flip across upper right/lower left diagonal", "upper-right-diagonal"}, {GST_GL_ROTATE_METHOD_AUTO, "Select rotate method based on image-orientation tag", "automatic"}, {0, NULL, NULL}, }; static GType gst_gl_rotate_method_get_type (void) { static GType rotate_method_type = 0; if (!rotate_method_type) { rotate_method_type = g_enum_register_static ("GstGLRotateMethod", rotate_methods); } return rotate_method_type; } static void gst_gl_image_sink_bin_init (GstGLImageSinkBin * self) { GstGLImageSink *sink = g_object_new (GST_TYPE_GLIMAGE_SINK, NULL); g_signal_connect (sink, "client-reshape", (GCallback) _on_client_reshape, self); g_signal_connect (sink, "client-draw", (GCallback) _on_client_draw, self); gst_gl_sink_bin_finish_init_with_element (GST_GL_SINK_BIN (self), GST_ELEMENT (sink)); } static void gst_gl_image_sink_bin_class_init (GstGLImageSinkBinClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); gobject_class->get_property = gst_gl_image_sink_bin_get_property; gobject_class->set_property = gst_gl_image_sink_bin_set_property; /* gl sink */ g_object_class_install_property (gobject_class, PROP_BIN_ROTATE_METHOD, g_param_spec_enum ("rotate-method", "rotate method", "rotate method", GST_TYPE_GL_ROTATE_METHOD, DEFAULT_ROTATE_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_FORCE_ASPECT_RATIO, g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio", "When enabled, scaling will respect original aspect ratio", DEFAULT_FORCE_ASPECT_RATIO, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_HANDLE_EVENTS, g_param_spec_boolean ("handle-events", "Handle XEvents", "When enabled, XEvents will be selected and handled", DEFAULT_HANDLE_EVENTS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_IGNORE_ALPHA, g_param_spec_boolean ("ignore-alpha", "Ignore Alpha", "When enabled, alpha will be ignored and converted to black", DEFAULT_IGNORE_ALPHA, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_CONTEXT, g_param_spec_object ("context", "OpenGL context", "Get OpenGL context", GST_TYPE_GL_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_PIXEL_ASPECT_RATIO, gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio", "The pixel aspect ratio of the device", 0, 1, G_MAXINT, 1, 1, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /* video sink */ g_object_class_install_property (gobject_class, PROP_BIN_SHOW_PREROLL_FRAME, g_param_spec_boolean ("show-preroll-frame", "Show preroll frame", "Whether to render video frames during preroll", DEFAULT_SHOW_PREROLL_FRAME, G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_OUTPUT_MULTIVIEW_LAYOUT, g_param_spec_enum ("output-multiview-mode", "Output Multiview Mode", "Choose output mode for multiview/3D video", GST_TYPE_VIDEO_MULTIVIEW_MODE, DEFAULT_MULTIVIEW_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_OUTPUT_MULTIVIEW_FLAGS, g_param_spec_flags ("output-multiview-flags", "Output Multiview Flags", "Output multiview layout modifier flags", GST_TYPE_VIDEO_MULTIVIEW_FLAGS, DEFAULT_MULTIVIEW_FLAGS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BIN_OUTPUT_MULTIVIEW_DOWNMIX_MODE, g_param_spec_enum ("output-multiview-downmix-mode", "Mode for mono downmixed output", "Output anaglyph type to generate when downmixing to mono", GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE, DEFAULT_MULTIVIEW_DOWNMIX, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_DRAW] = g_signal_new ("client-draw", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_BOOLEAN, 2, GST_TYPE_GL_CONTEXT, GST_TYPE_SAMPLE); gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_RESHAPE] = g_signal_new ("client-reshape", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_BOOLEAN, 3, GST_TYPE_GL_CONTEXT, G_TYPE_UINT, G_TYPE_UINT); } #define GST_GLIMAGE_SINK_GET_LOCK(glsink) \ (GST_GLIMAGE_SINK(glsink)->drawing_lock) #define GST_GLIMAGE_SINK_LOCK(glsink) \ (g_mutex_lock(&GST_GLIMAGE_SINK_GET_LOCK (glsink))) #define GST_GLIMAGE_SINK_UNLOCK(glsink) \ (g_mutex_unlock(&GST_GLIMAGE_SINK_GET_LOCK (glsink))) #define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0)) #define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1)) #define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0)) #define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0)) #define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0)) #define SUPPORTED_GL_APIS GST_GL_API_OPENGL | GST_GL_API_GLES2 | GST_GL_API_OPENGL3 static void gst_glimage_sink_thread_init_redisplay (GstGLImageSink * gl_sink); static void gst_glimage_sink_cleanup_glthread (GstGLImageSink * gl_sink); static void gst_glimage_sink_on_close (GstGLImageSink * gl_sink); static void gst_glimage_sink_on_resize (GstGLImageSink * gl_sink, gint width, gint height); static void gst_glimage_sink_on_draw (GstGLImageSink * gl_sink); static gboolean gst_glimage_sink_redisplay (GstGLImageSink * gl_sink); static void gst_glimage_sink_finalize (GObject * object); static void gst_glimage_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * param_spec); static void gst_glimage_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * param_spec); static gboolean gst_glimage_sink_event (GstBaseSink * sink, GstEvent * event); static gboolean gst_glimage_sink_query (GstBaseSink * bsink, GstQuery * query); static void gst_glimage_sink_set_context (GstElement * element, GstContext * context); static GstStateChangeReturn gst_glimage_sink_change_state (GstElement * element, GstStateChange transition); static void gst_glimage_sink_get_times (GstBaseSink * bsink, GstBuffer * buf, GstClockTime * start, GstClockTime * end); static gboolean gst_glimage_sink_set_caps (GstBaseSink * bsink, GstCaps * caps); static GstCaps *gst_glimage_sink_get_caps (GstBaseSink * bsink, GstCaps * filter); static GstFlowReturn gst_glimage_sink_prepare (GstBaseSink * bsink, GstBuffer * buf); static GstFlowReturn gst_glimage_sink_show_frame (GstVideoSink * bsink, GstBuffer * buf); static gboolean gst_glimage_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query); static void gst_glimage_sink_video_overlay_init (GstVideoOverlayInterface * iface); static void gst_glimage_sink_set_window_handle (GstVideoOverlay * overlay, guintptr id); static void gst_glimage_sink_expose (GstVideoOverlay * overlay); static void gst_glimage_sink_set_render_rectangle (GstVideoOverlay * overlay, gint x, gint y, gint width, gint height); static void gst_glimage_sink_handle_events (GstVideoOverlay * overlay, gboolean handle_events); static gboolean update_output_format (GstGLImageSink * glimage_sink); #define GST_GL_SINK_CAPS \ "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), " \ "format = (string) RGBA, " \ "width = " GST_VIDEO_SIZE_RANGE ", " \ "height = " GST_VIDEO_SIZE_RANGE ", " \ "framerate = " GST_VIDEO_FPS_RANGE ", " \ "texture-target = (string) { 2D, external-oes } " \ " ; " \ "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "," \ GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION "), " \ "format = (string) RGBA, " \ "width = " GST_VIDEO_SIZE_RANGE ", " \ "height = " GST_VIDEO_SIZE_RANGE ", " \ "framerate = " GST_VIDEO_FPS_RANGE ", " \ "texture-target = (string) { 2D, external-oes } " static GstStaticPadTemplate gst_glimage_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_GL_SINK_CAPS)); enum { ARG_0, ARG_DISPLAY, PROP_ROTATE_METHOD, PROP_FORCE_ASPECT_RATIO, PROP_PIXEL_ASPECT_RATIO, PROP_CONTEXT, PROP_HANDLE_EVENTS, PROP_IGNORE_ALPHA, PROP_OUTPUT_MULTIVIEW_LAYOUT, PROP_OUTPUT_MULTIVIEW_FLAGS, PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE }; enum { SIGNAL_0, CLIENT_DRAW_SIGNAL, CLIENT_RESHAPE_SIGNAL, LAST_SIGNAL }; static guint gst_glimage_sink_signals[LAST_SIGNAL] = { 0 }; static void _display_size_to_stream_size (GstGLImageSink * gl_sink, gdouble x, gdouble y, gdouble * stream_x, gdouble * stream_y) { gdouble stream_width, stream_height; stream_width = (gdouble) GST_VIDEO_INFO_WIDTH (&gl_sink->out_info); stream_height = (gdouble) GST_VIDEO_INFO_HEIGHT (&gl_sink->out_info); /* from display coordinates to stream coordinates */ if (gl_sink->display_rect.w > 0) *stream_x = (x - gl_sink->display_rect.x) / gl_sink->display_rect.w * stream_width; else *stream_x = 0.; /* clip to stream size */ if (*stream_x < 0.) *stream_x = 0.; if (*stream_x > GST_VIDEO_INFO_WIDTH (&gl_sink->out_info)) *stream_x = GST_VIDEO_INFO_WIDTH (&gl_sink->out_info); /* same for y-axis */ if (gl_sink->display_rect.h > 0) *stream_y = (y - gl_sink->display_rect.y) / gl_sink->display_rect.h * stream_height; else *stream_y = 0.; if (*stream_y < 0.) *stream_y = 0.; if (*stream_y > GST_VIDEO_INFO_HEIGHT (&gl_sink->out_info)) *stream_y = GST_VIDEO_INFO_HEIGHT (&gl_sink->out_info); GST_TRACE ("transform %fx%f into %fx%f", x, y, *stream_x, *stream_y); } /* rotate 90 */ static const gfloat clockwise_matrix[] = { 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, }; /* rotate 180 */ static const gfloat clockwise_180_matrix[] = { -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, }; /* rotate 270 */ static const gfloat counterclockwise_matrix[] = { 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, }; /* horizontal-flip */ static const gfloat horizontal_flip_matrix[] = { -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, }; /* vertical-flip */ static const gfloat vertical_flip_matrix[] = { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, }; /* upper-left-diagonal */ static const gfloat upper_left_matrix[] = { 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, }; /* upper-right-diagonal */ static const gfloat upper_right_matrix[] = { 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, }; static void gst_glimage_sink_set_rotate_method (GstGLImageSink * gl_sink, GstGLRotateMethod method, gboolean from_tag) { GstGLRotateMethod tag_method = DEFAULT_ROTATE_METHOD; GST_GLIMAGE_SINK_LOCK (gl_sink); if (from_tag) tag_method = method; else gl_sink->rotate_method = method; if (gl_sink->rotate_method == GST_GL_ROTATE_METHOD_AUTO) method = tag_method; else method = gl_sink->rotate_method; if (method != gl_sink->current_rotate_method) { GST_DEBUG_OBJECT (gl_sink, "Changing method from %s to %s", rotate_methods[gl_sink->current_rotate_method].value_nick, rotate_methods[method].value_nick); switch (method) { case GST_GL_ROTATE_METHOD_IDENTITY: gl_sink->transform_matrix = NULL; gl_sink->output_mode_changed = TRUE; break; case GST_GL_ROTATE_METHOD_90R: gl_sink->transform_matrix = clockwise_matrix; gl_sink->output_mode_changed = TRUE; break; case GST_GL_ROTATE_METHOD_180: gl_sink->transform_matrix = clockwise_180_matrix; gl_sink->output_mode_changed = TRUE; break; case GST_GL_ROTATE_METHOD_90L: gl_sink->transform_matrix = counterclockwise_matrix; gl_sink->output_mode_changed = TRUE; break; case GST_GL_ROTATE_METHOD_FLIP_HORIZ: gl_sink->transform_matrix = horizontal_flip_matrix; gl_sink->output_mode_changed = TRUE; break; case GST_GL_ROTATE_METHOD_FLIP_VERT: gl_sink->transform_matrix = vertical_flip_matrix; gl_sink->output_mode_changed = TRUE; break; case GST_GL_ROTATE_METHOD_FLIP_UL_LR: gl_sink->transform_matrix = upper_left_matrix; gl_sink->output_mode_changed = TRUE; break; case GST_GL_ROTATE_METHOD_FLIP_UR_LL: gl_sink->transform_matrix = upper_right_matrix; gl_sink->output_mode_changed = TRUE; break; default: g_assert_not_reached (); break; } gl_sink->current_rotate_method = method; } GST_GLIMAGE_SINK_UNLOCK (gl_sink); } static void gst_glimage_sink_navigation_send_event (GstNavigation * navigation, GstStructure * structure) { GstGLImageSink *sink = GST_GLIMAGE_SINK (navigation); gboolean handled = FALSE; GstEvent *event = NULL; GstGLWindow *window; guint width, height; gdouble x, y; if (!sink->context) { gst_structure_free (structure); return; } window = gst_gl_context_get_window (sink->context); g_return_if_fail (GST_IS_GL_WINDOW (window)); width = GST_VIDEO_SINK_WIDTH (sink); height = GST_VIDEO_SINK_HEIGHT (sink); gst_gl_window_get_surface_dimensions (window, &width, &height); /* Converting pointer coordinates to the non scaled geometry */ if (width != 0 && gst_structure_get_double (structure, "pointer_x", &x) && height != 0 && gst_structure_get_double (structure, "pointer_y", &y)) { gdouble stream_x, stream_y; _display_size_to_stream_size (sink, x, y, &stream_x, &stream_y); gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, stream_x, "pointer_y", G_TYPE_DOUBLE, stream_y, NULL); } event = gst_event_new_navigation (structure); if (event) { gst_event_ref (event); handled = gst_pad_push_event (GST_VIDEO_SINK_PAD (sink), event); if (!handled) gst_element_post_message ((GstElement *) sink, gst_navigation_message_new_event ((GstObject *) sink, event)); gst_event_unref (event); } gst_object_unref (window); } static void gst_glimage_sink_navigation_interface_init (GstNavigationInterface * iface) { iface->send_event = gst_glimage_sink_navigation_send_event; } #define gst_glimage_sink_parent_class parent_class G_DEFINE_TYPE_WITH_CODE (GstGLImageSink, gst_glimage_sink, GST_TYPE_VIDEO_SINK, G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY, gst_glimage_sink_video_overlay_init); G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION, gst_glimage_sink_navigation_interface_init); GST_DEBUG_CATEGORY_INIT (gst_debug_glimage_sink, "glimagesink", 0, "OpenGL Video Sink")); static void gst_glimage_sink_class_init (GstGLImageSinkClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseSinkClass *gstbasesink_class; GstVideoSinkClass *gstvideosink_class; GstElementClass *element_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbasesink_class = (GstBaseSinkClass *) klass; gstvideosink_class = (GstVideoSinkClass *) klass; element_class = GST_ELEMENT_CLASS (klass); gobject_class->set_property = gst_glimage_sink_set_property; gobject_class->get_property = gst_glimage_sink_get_property; g_object_class_install_property (gobject_class, PROP_ROTATE_METHOD, g_param_spec_enum ("rotate-method", "rotate method", "rotate method", GST_TYPE_GL_ROTATE_METHOD, DEFAULT_ROTATE_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO, g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio", "When enabled, scaling will respect original aspect ratio", DEFAULT_FORCE_ASPECT_RATIO, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO, gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio", "The pixel aspect ratio of the device", 0, 1, G_MAXINT, 1, 1, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CONTEXT, g_param_spec_object ("context", "OpenGL context", "Get OpenGL context", GST_TYPE_GL_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_HANDLE_EVENTS, g_param_spec_boolean ("handle-events", "Handle XEvents", "When enabled, XEvents will be selected and handled", DEFAULT_HANDLE_EVENTS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_IGNORE_ALPHA, g_param_spec_boolean ("ignore-alpha", "Ignore Alpha", "When enabled, alpha will be ignored and converted to black", DEFAULT_IGNORE_ALPHA, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_OUTPUT_MULTIVIEW_LAYOUT, g_param_spec_enum ("output-multiview-mode", "Output Multiview Mode", "Choose output mode for multiview/3D video", GST_TYPE_VIDEO_MULTIVIEW_MODE, DEFAULT_MULTIVIEW_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_OUTPUT_MULTIVIEW_FLAGS, g_param_spec_flags ("output-multiview-flags", "Output Multiview Flags", "Output multiview layout modifier flags", GST_TYPE_VIDEO_MULTIVIEW_FLAGS, DEFAULT_MULTIVIEW_FLAGS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE, g_param_spec_enum ("output-multiview-downmix-mode", "Mode for mono downmixed output", "Output anaglyph type to generate when downmixing to mono", GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE, DEFAULT_MULTIVIEW_DOWNMIX, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_metadata (element_class, "OpenGL video sink", "Sink/Video", "A videosink based on OpenGL", "Julien Isorce "); /** * GstGLImageSink::client-draw: * @object: the #GstGLImageSink * @texture: the #guint id of the texture. * @width: the #guint width of the texture. * @height: the #guint height of the texture. * * Will be emitted before actually drawing the texture. The client should * redraw the surface/contents with the @texture, @width and @height and * and return %TRUE. * * Returns: whether the texture was redrawn by the signal. If not, a * default redraw will occur. */ gst_glimage_sink_signals[CLIENT_DRAW_SIGNAL] = g_signal_new ("client-draw", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_BOOLEAN, 2, GST_TYPE_GL_CONTEXT, GST_TYPE_SAMPLE); /** * GstGLImageSink::client-reshape: * @object: the #GstGLImageSink * @width: the #guint width of the texture. * @height: the #guint height of the texture. * * The client should resize the surface/window/viewport with the @width and * @height and return %TRUE. * * Returns: whether the content area was resized by the signal. If not, a * default viewport resize will occur. */ gst_glimage_sink_signals[CLIENT_RESHAPE_SIGNAL] = g_signal_new ("client-reshape", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_BOOLEAN, 3, GST_TYPE_GL_CONTEXT, G_TYPE_UINT, G_TYPE_UINT); gst_element_class_add_static_pad_template (element_class, &gst_glimage_sink_template); gobject_class->finalize = gst_glimage_sink_finalize; gstelement_class->change_state = gst_glimage_sink_change_state; gstelement_class->set_context = gst_glimage_sink_set_context; gstbasesink_class->event = gst_glimage_sink_event; gstbasesink_class->query = GST_DEBUG_FUNCPTR (gst_glimage_sink_query); gstbasesink_class->set_caps = gst_glimage_sink_set_caps; gstbasesink_class->get_caps = gst_glimage_sink_get_caps; gstbasesink_class->get_times = gst_glimage_sink_get_times; gstbasesink_class->prepare = gst_glimage_sink_prepare; gstbasesink_class->propose_allocation = gst_glimage_sink_propose_allocation; gstvideosink_class->show_frame = GST_DEBUG_FUNCPTR (gst_glimage_sink_show_frame); } static void gst_glimage_sink_init (GstGLImageSink * glimage_sink) { glimage_sink->window_id = 0; glimage_sink->new_window_id = 0; glimage_sink->display = NULL; glimage_sink->keep_aspect_ratio = TRUE; glimage_sink->par_n = 0; glimage_sink->par_d = 1; glimage_sink->redisplay_texture = 0; glimage_sink->handle_events = TRUE; glimage_sink->ignore_alpha = TRUE; glimage_sink->overlay_compositor = NULL; glimage_sink->mview_output_mode = DEFAULT_MULTIVIEW_MODE; glimage_sink->mview_output_flags = DEFAULT_MULTIVIEW_FLAGS; glimage_sink->mview_downmix_mode = DEFAULT_MULTIVIEW_DOWNMIX; glimage_sink->current_rotate_method = DEFAULT_ROTATE_METHOD; glimage_sink->transform_matrix = NULL; g_mutex_init (&glimage_sink->drawing_lock); } static void gst_glimage_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstGLImageSink *glimage_sink; g_return_if_fail (GST_IS_GLIMAGE_SINK (object)); glimage_sink = GST_GLIMAGE_SINK (object); switch (prop_id) { case PROP_ROTATE_METHOD: gst_glimage_sink_set_rotate_method (glimage_sink, g_value_get_enum (value), FALSE); break; case PROP_FORCE_ASPECT_RATIO: { glimage_sink->keep_aspect_ratio = g_value_get_boolean (value); break; } case PROP_PIXEL_ASPECT_RATIO: { glimage_sink->par_n = gst_value_get_fraction_numerator (value); glimage_sink->par_d = gst_value_get_fraction_denominator (value); break; } case PROP_HANDLE_EVENTS: gst_glimage_sink_handle_events (GST_VIDEO_OVERLAY (glimage_sink), g_value_get_boolean (value)); break; case PROP_IGNORE_ALPHA: glimage_sink->ignore_alpha = g_value_get_boolean (value); break; case PROP_OUTPUT_MULTIVIEW_LAYOUT: GST_GLIMAGE_SINK_LOCK (glimage_sink); glimage_sink->mview_output_mode = g_value_get_enum (value); glimage_sink->output_mode_changed = TRUE; GST_GLIMAGE_SINK_UNLOCK (glimage_sink); break; case PROP_OUTPUT_MULTIVIEW_FLAGS: GST_GLIMAGE_SINK_LOCK (glimage_sink); glimage_sink->mview_output_flags = g_value_get_flags (value); glimage_sink->output_mode_changed = TRUE; GST_GLIMAGE_SINK_UNLOCK (glimage_sink); break; case PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE: GST_GLIMAGE_SINK_LOCK (glimage_sink); glimage_sink->mview_downmix_mode = g_value_get_enum (value); glimage_sink->output_mode_changed = TRUE; GST_GLIMAGE_SINK_UNLOCK (glimage_sink); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_glimage_sink_finalize (GObject * object) { GstGLImageSink *glimage_sink; g_return_if_fail (GST_IS_GLIMAGE_SINK (object)); glimage_sink = GST_GLIMAGE_SINK (object); g_mutex_clear (&glimage_sink->drawing_lock); GST_DEBUG ("finalized"); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_glimage_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstGLImageSink *glimage_sink; g_return_if_fail (GST_IS_GLIMAGE_SINK (object)); glimage_sink = GST_GLIMAGE_SINK (object); switch (prop_id) { case PROP_ROTATE_METHOD: g_value_set_enum (value, glimage_sink->current_rotate_method); break; case PROP_FORCE_ASPECT_RATIO: g_value_set_boolean (value, glimage_sink->keep_aspect_ratio); break; case PROP_PIXEL_ASPECT_RATIO: gst_value_set_fraction (value, glimage_sink->par_n, glimage_sink->par_d); break; case PROP_CONTEXT: g_value_set_object (value, glimage_sink->context); break; case PROP_HANDLE_EVENTS: g_value_set_boolean (value, glimage_sink->handle_events); break; case PROP_IGNORE_ALPHA: g_value_set_boolean (value, glimage_sink->ignore_alpha); break; case PROP_OUTPUT_MULTIVIEW_LAYOUT: g_value_set_enum (value, glimage_sink->mview_output_mode); break; case PROP_OUTPUT_MULTIVIEW_FLAGS: g_value_set_flags (value, glimage_sink->mview_output_flags); break; case PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE: g_value_set_enum (value, glimage_sink->mview_downmix_mode); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_glimage_sink_key_event_cb (GstGLWindow * window, char *event_name, char *key_string, GstGLImageSink * gl_sink) { GST_DEBUG_OBJECT (gl_sink, "event %s key %s pressed", event_name, key_string); gst_navigation_send_key_event (GST_NAVIGATION (gl_sink), event_name, key_string); } static void gst_glimage_sink_mouse_event_cb (GstGLWindow * window, char *event_name, int button, double posx, double posy, GstGLImageSink * gl_sink) { GST_DEBUG_OBJECT (gl_sink, "event %s at %g, %g", event_name, posx, posy); gst_navigation_send_mouse_event (GST_NAVIGATION (gl_sink), event_name, button, posx, posy); } static gboolean _ensure_gl_setup (GstGLImageSink * gl_sink) { GError *error = NULL; GST_TRACE_OBJECT (gl_sink, "Ensuring setup"); if (!gl_sink->context) { GST_OBJECT_LOCK (gl_sink->display); do { GstGLContext *other_context = NULL; GstGLWindow *window = NULL; if (gl_sink->context) { gst_object_unref (gl_sink->context); gl_sink->context = NULL; } GST_DEBUG_OBJECT (gl_sink, "No current context, creating one for %" GST_PTR_FORMAT, gl_sink->display); if (gl_sink->other_context) { other_context = gst_object_ref (gl_sink->other_context); } else { other_context = gst_gl_display_get_gl_context_for_thread (gl_sink->display, NULL); } if (!gst_gl_display_create_context (gl_sink->display, other_context, &gl_sink->context, &error)) { if (other_context) gst_object_unref (other_context); GST_OBJECT_UNLOCK (gl_sink->display); goto context_error; } GST_DEBUG_OBJECT (gl_sink, "created context %" GST_PTR_FORMAT " from other context %" GST_PTR_FORMAT, gl_sink->context, gl_sink->other_context); window = gst_gl_context_get_window (gl_sink->context); GST_DEBUG_OBJECT (gl_sink, "got window %" GST_PTR_FORMAT, window); if (!gl_sink->window_id && !gl_sink->new_window_id) gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (gl_sink)); GST_DEBUG_OBJECT (gl_sink, "window_id : %" G_GUINTPTR_FORMAT " , new_window_id : %" G_GUINTPTR_FORMAT, gl_sink->window_id, gl_sink->new_window_id); if (gl_sink->window_id != gl_sink->new_window_id) { gl_sink->window_id = gl_sink->new_window_id; GST_DEBUG_OBJECT (gl_sink, "Setting window handle on gl window"); gst_gl_window_set_window_handle (window, gl_sink->window_id); } gst_gl_window_handle_events (window, gl_sink->handle_events); /* setup callbacks */ gst_gl_window_set_resize_callback (window, GST_GL_WINDOW_RESIZE_CB (gst_glimage_sink_on_resize), gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref); gst_gl_window_set_draw_callback (window, GST_GL_WINDOW_CB (gst_glimage_sink_on_draw), gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref); gst_gl_window_set_close_callback (window, GST_GL_WINDOW_CB (gst_glimage_sink_on_close), gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref); gl_sink->key_sig_id = g_signal_connect (window, "key-event", G_CALLBACK (gst_glimage_sink_key_event_cb), gl_sink); gl_sink->mouse_sig_id = g_signal_connect (window, "mouse-event", G_CALLBACK (gst_glimage_sink_mouse_event_cb), gl_sink); if (gl_sink->x >= 0 && gl_sink->y >= 0 && gl_sink->width > 0 && gl_sink->height > 0) { gst_gl_window_set_render_rectangle (window, gl_sink->x, gl_sink->y, gl_sink->width, gl_sink->height); } if (other_context) gst_object_unref (other_context); gst_object_unref (window); } while (!gst_gl_display_add_context (gl_sink->display, gl_sink->context)); GST_OBJECT_UNLOCK (gl_sink->display); } else GST_TRACE_OBJECT (gl_sink, "Already have a context"); return TRUE; context_error: { GST_ELEMENT_ERROR (gl_sink, RESOURCE, NOT_FOUND, ("%s", error->message), (NULL)); if (gl_sink->context) { gst_object_unref (gl_sink->context); gl_sink->context = NULL; } g_clear_error (&error); return FALSE; } } static gboolean gst_glimage_sink_event (GstBaseSink * sink, GstEvent * event) { GstGLImageSink *gl_sink = GST_GLIMAGE_SINK (sink); GstTagList *taglist; gchar *orientation; gboolean ret; GST_DEBUG_OBJECT (gl_sink, "handling %s event", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_TAG: gst_event_parse_tag (event, &taglist); if (gst_tag_list_get_string (taglist, "image-orientation", &orientation)) { if (!g_strcmp0 ("rotate-0", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_IDENTITY, TRUE); else if (!g_strcmp0 ("rotate-90", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_90R, TRUE); else if (!g_strcmp0 ("rotate-180", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_180, TRUE); else if (!g_strcmp0 ("rotate-270", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_90L, TRUE); else if (!g_strcmp0 ("flip-rotate-0", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_FLIP_HORIZ, TRUE); else if (!g_strcmp0 ("flip-rotate-90", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_FLIP_UR_LL, TRUE); else if (!g_strcmp0 ("flip-rotate-180", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_FLIP_VERT, TRUE); else if (!g_strcmp0 ("flip-rotate-270", orientation)) gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_FLIP_UL_LR, TRUE); g_free (orientation); } break; default: break; } ret = GST_BASE_SINK_CLASS (parent_class)->event (sink, event); return ret; } static gboolean gst_glimage_sink_query (GstBaseSink * bsink, GstQuery * query) { GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (bsink); gboolean res = FALSE; switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CONTEXT: { if (gst_gl_handle_context_query ((GstElement *) glimage_sink, query, glimage_sink->display, glimage_sink->context, glimage_sink->other_context)) return TRUE; break; } case GST_QUERY_DRAIN: { GstBuffer *buf[2]; GST_GLIMAGE_SINK_LOCK (glimage_sink); glimage_sink->redisplay_texture = 0; buf[0] = glimage_sink->stored_buffer[0]; buf[1] = glimage_sink->stored_buffer[1]; glimage_sink->stored_buffer[0] = glimage_sink->stored_buffer[1] = NULL; glimage_sink->stored_sync_meta = glimage_sink->next_sync_meta = NULL; GST_GLIMAGE_SINK_UNLOCK (glimage_sink); gst_buffer_replace (buf, NULL); gst_buffer_replace (buf + 1, NULL); gst_buffer_replace (&glimage_sink->input_buffer, NULL); gst_buffer_replace (&glimage_sink->input_buffer2, NULL); gst_buffer_replace (&glimage_sink->next_buffer, NULL); gst_buffer_replace (&glimage_sink->next_buffer2, NULL); gst_buffer_replace (&glimage_sink->next_sync, NULL); res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query); break; } default: res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query); break; } return res; } static void gst_glimage_sink_set_context (GstElement * element, GstContext * context) { GstGLImageSink *gl_sink = GST_GLIMAGE_SINK (element); gst_gl_handle_set_context (element, context, &gl_sink->display, &gl_sink->other_context); if (gl_sink->display) gst_gl_display_filter_gl_api (gl_sink->display, SUPPORTED_GL_APIS); GST_ELEMENT_CLASS (parent_class)->set_context (element, context); } static GstStateChangeReturn gst_glimage_sink_change_state (GstElement * element, GstStateChange transition) { GstGLImageSink *glimage_sink; GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GST_DEBUG ("changing state: %s => %s", gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)), gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition))); glimage_sink = GST_GLIMAGE_SINK (element); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: if (!gst_gl_ensure_element_data (glimage_sink, &glimage_sink->display, &glimage_sink->other_context)) return GST_STATE_CHANGE_FAILURE; gst_gl_display_filter_gl_api (glimage_sink->display, SUPPORTED_GL_APIS); if (!_ensure_gl_setup (glimage_sink)) return GST_STATE_CHANGE_FAILURE; break; case GST_STATE_CHANGE_READY_TO_PAUSED: g_atomic_int_set (&glimage_sink->to_quit, 0); break; case GST_STATE_CHANGE_PAUSED_TO_PLAYING: 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_PLAYING_TO_PAUSED: break; case GST_STATE_CHANGE_PAUSED_TO_READY: { GstBuffer *buf[2]; GST_GLIMAGE_SINK_LOCK (glimage_sink); /* mark the redisplay_texture as unavailable (=0) * to avoid drawing */ glimage_sink->redisplay_texture = 0; buf[0] = glimage_sink->stored_buffer[0]; buf[1] = glimage_sink->stored_buffer[1]; glimage_sink->stored_buffer[0] = glimage_sink->stored_buffer[1] = NULL; glimage_sink->stored_sync_meta = glimage_sink->next_sync_meta = NULL; if (glimage_sink->stored_sync) gst_buffer_unref (glimage_sink->stored_sync); glimage_sink->stored_sync = NULL; GST_GLIMAGE_SINK_UNLOCK (glimage_sink); gst_buffer_replace (buf, NULL); gst_buffer_replace (buf + 1, NULL); gst_object_replace ((GstObject **) & glimage_sink->convert_views, NULL); gst_buffer_replace (&glimage_sink->input_buffer, NULL); gst_buffer_replace (&glimage_sink->input_buffer2, NULL); gst_buffer_replace (&glimage_sink->next_buffer, NULL); gst_buffer_replace (&glimage_sink->next_buffer2, NULL); gst_buffer_replace (&glimage_sink->next_sync, NULL); glimage_sink->window_id = 0; /* but do not reset glimage_sink->new_window_id */ GST_VIDEO_SINK_WIDTH (glimage_sink) = 1; GST_VIDEO_SINK_HEIGHT (glimage_sink) = 1; /* Clear cached caps */ if (glimage_sink->out_caps) { gst_caps_unref (glimage_sink->out_caps); glimage_sink->out_caps = NULL; } if (glimage_sink->in_caps) { gst_caps_unref (glimage_sink->in_caps); glimage_sink->in_caps = NULL; } break; } case GST_STATE_CHANGE_READY_TO_NULL: if (glimage_sink->overlay_compositor) { gst_object_unref (glimage_sink->overlay_compositor); glimage_sink->overlay_compositor = NULL; } if (glimage_sink->context) { GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context); gst_gl_window_send_message (window, GST_GL_WINDOW_CB (gst_glimage_sink_cleanup_glthread), glimage_sink); gst_gl_window_set_resize_callback (window, NULL, NULL, NULL); gst_gl_window_set_draw_callback (window, NULL, NULL, NULL); gst_gl_window_set_close_callback (window, NULL, NULL, NULL); if (glimage_sink->key_sig_id) g_signal_handler_disconnect (window, glimage_sink->key_sig_id); glimage_sink->key_sig_id = 0; if (glimage_sink->mouse_sig_id) g_signal_handler_disconnect (window, glimage_sink->mouse_sig_id); glimage_sink->mouse_sig_id = 0; gst_object_unref (window); gst_object_unref (glimage_sink->context); glimage_sink->context = NULL; } glimage_sink->window_id = 0; if (glimage_sink->other_context) { gst_object_unref (glimage_sink->other_context); glimage_sink->other_context = NULL; } if (glimage_sink->display) { gst_object_unref (glimage_sink->display); glimage_sink->display = NULL; } break; default: break; } return ret; } static void gst_glimage_sink_get_times (GstBaseSink * bsink, GstBuffer * buf, GstClockTime * start, GstClockTime * end) { GstGLImageSink *glimagesink; glimagesink = GST_GLIMAGE_SINK (bsink); if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) { *start = GST_BUFFER_TIMESTAMP (buf); if (GST_BUFFER_DURATION_IS_VALID (buf)) *end = *start + GST_BUFFER_DURATION (buf); else { if (GST_VIDEO_INFO_FPS_N (&glimagesink->out_info) > 0) { *end = *start + gst_util_uint64_scale_int (GST_SECOND, GST_VIDEO_INFO_FPS_D (&glimagesink->out_info), GST_VIDEO_INFO_FPS_N (&glimagesink->out_info)); } } } } static GstCaps * gst_glimage_sink_get_caps (GstBaseSink * bsink, GstCaps * filter) { GstCaps *tmp = NULL; GstCaps *result = NULL; tmp = gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (bsink)); if (filter) { GST_DEBUG_OBJECT (bsink, "intersecting with filter caps %" GST_PTR_FORMAT, filter); result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST); gst_caps_unref (tmp); } else { result = tmp; } result = gst_gl_overlay_compositor_add_caps (result); GST_DEBUG_OBJECT (bsink, "returning caps: %" GST_PTR_FORMAT, result); return result; } static gboolean configure_display_from_info (GstGLImageSink * glimage_sink, GstVideoInfo * vinfo) { gint width; gint height; gboolean ok; gint par_n, par_d; gint display_par_n, display_par_d; guint display_ratio_num, display_ratio_den; width = GST_VIDEO_INFO_WIDTH (vinfo); height = GST_VIDEO_INFO_HEIGHT (vinfo); par_n = GST_VIDEO_INFO_PAR_N (vinfo); par_d = GST_VIDEO_INFO_PAR_D (vinfo); if (!par_n) par_n = 1; /* get display's PAR */ if (glimage_sink->par_n != 0 && glimage_sink->par_d != 0) { display_par_n = glimage_sink->par_n; display_par_d = glimage_sink->par_d; } else { display_par_n = 1; display_par_d = 1; } ok = gst_video_calculate_display_ratio (&display_ratio_num, &display_ratio_den, width, height, par_n, par_d, display_par_n, display_par_d); if (!ok) return FALSE; GST_TRACE ("PAR: %u/%u DAR:%u/%u", par_n, par_d, display_par_n, display_par_d); if (height % display_ratio_den == 0) { GST_DEBUG ("keeping video height"); GST_VIDEO_SINK_WIDTH (glimage_sink) = (guint) gst_util_uint64_scale_int (height, display_ratio_num, display_ratio_den); GST_VIDEO_SINK_HEIGHT (glimage_sink) = height; } else if (width % display_ratio_num == 0) { GST_DEBUG ("keeping video width"); GST_VIDEO_SINK_WIDTH (glimage_sink) = width; GST_VIDEO_SINK_HEIGHT (glimage_sink) = (guint) gst_util_uint64_scale_int (width, display_ratio_den, display_ratio_num); } else { GST_DEBUG ("approximating while keeping video height"); GST_VIDEO_SINK_WIDTH (glimage_sink) = (guint) gst_util_uint64_scale_int (height, display_ratio_num, display_ratio_den); GST_VIDEO_SINK_HEIGHT (glimage_sink) = height; } GST_DEBUG ("scaling to %dx%d", GST_VIDEO_SINK_WIDTH (glimage_sink), GST_VIDEO_SINK_HEIGHT (glimage_sink)); return TRUE; } /* Called with GST_GLIMAGE_SINK lock held, to * copy in_info to out_info and update out_caps */ static gboolean update_output_format (GstGLImageSink * glimage_sink) { GstVideoInfo *out_info = &glimage_sink->out_info; gboolean input_is_mono = FALSE; GstVideoMultiviewMode mv_mode; GstGLWindow *window = NULL; GstGLTextureTarget previous_target; GstStructure *s; const gchar *target_str; GstCaps *out_caps; gboolean ret; *out_info = glimage_sink->in_info; previous_target = glimage_sink->texture_target; mv_mode = GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info); if (mv_mode == GST_VIDEO_MULTIVIEW_MODE_NONE || mv_mode == GST_VIDEO_MULTIVIEW_MODE_MONO || mv_mode == GST_VIDEO_MULTIVIEW_MODE_LEFT || mv_mode == GST_VIDEO_MULTIVIEW_MODE_RIGHT) input_is_mono = TRUE; if (input_is_mono == FALSE && glimage_sink->mview_output_mode != GST_VIDEO_MULTIVIEW_MODE_NONE) { /* Input is multiview, and output wants a conversion - configure 3d converter now, * otherwise defer it until either the caps or the 3D output mode changes */ gst_video_multiview_video_info_change_mode (out_info, glimage_sink->mview_output_mode, glimage_sink->mview_output_flags); if (glimage_sink->convert_views == NULL) { glimage_sink->convert_views = gst_gl_view_convert_new (); gst_gl_view_convert_set_context (glimage_sink->convert_views, glimage_sink->context); } } else { if (glimage_sink->convert_views) { gst_object_unref (glimage_sink->convert_views); glimage_sink->convert_views = NULL; } } ret = configure_display_from_info (glimage_sink, out_info); if (glimage_sink->convert_views) { /* Match actual output window size for pixel-aligned output, * even though we can't necessarily match the starting left/right * view parity properly */ glimage_sink->out_info.width = MAX (1, glimage_sink->display_rect.w); glimage_sink->out_info.height = MAX (1, glimage_sink->display_rect.h); GST_LOG_OBJECT (glimage_sink, "Set 3D output scale to %d,%d", glimage_sink->display_rect.w, glimage_sink->display_rect.h); } s = gst_caps_get_structure (glimage_sink->in_caps, 0); target_str = gst_structure_get_string (s, "texture-target"); if (!target_str) target_str = GST_GL_TEXTURE_TARGET_2D_STR; glimage_sink->texture_target = gst_gl_texture_target_from_string (target_str); if (!glimage_sink->texture_target) return FALSE; out_caps = gst_video_info_to_caps (out_info); gst_caps_set_features (out_caps, 0, gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY)); gst_caps_set_simple (out_caps, "texture-target", G_TYPE_STRING, target_str, NULL); if (glimage_sink->convert_views) { gst_caps_set_simple (out_caps, "texture-target", G_TYPE_STRING, GST_GL_TEXTURE_TARGET_2D_STR, NULL); glimage_sink->texture_target = GST_GL_TEXTURE_TARGET_2D; GST_GLIMAGE_SINK_UNLOCK (glimage_sink); gst_gl_view_convert_set_caps (glimage_sink->convert_views, glimage_sink->in_caps, out_caps); g_object_set (glimage_sink->convert_views, "downmix-mode", glimage_sink->mview_downmix_mode, NULL); GST_GLIMAGE_SINK_LOCK (glimage_sink); } if (glimage_sink->out_caps) gst_caps_unref (glimage_sink->out_caps); glimage_sink->out_caps = out_caps; if (previous_target != GST_GL_TEXTURE_TARGET_NONE && glimage_sink->texture_target != previous_target) { /* regenerate the shader for the changed target */ GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context); gst_gl_window_send_message (window, GST_GL_WINDOW_CB (gst_glimage_sink_cleanup_glthread), glimage_sink); gst_object_unref (window); } glimage_sink->output_mode_changed = FALSE; if (glimage_sink->context) window = gst_gl_context_get_window (glimage_sink->context); if (window) { gst_gl_window_queue_resize (window); gst_object_unref (window); } return ret; } static gboolean gst_glimage_sink_set_caps (GstBaseSink * bsink, GstCaps * caps) { GstGLImageSink *glimage_sink; gboolean ok; GstVideoInfo vinfo; GST_DEBUG_OBJECT (bsink, "set caps with %" GST_PTR_FORMAT, caps); glimage_sink = GST_GLIMAGE_SINK (bsink); ok = gst_video_info_from_caps (&vinfo, caps); if (!ok) return FALSE; if (!_ensure_gl_setup (glimage_sink)) return FALSE; GST_GLIMAGE_SINK_LOCK (glimage_sink); if (glimage_sink->in_caps) gst_caps_unref (glimage_sink->in_caps); glimage_sink->in_caps = gst_caps_ref (caps); glimage_sink->in_info = vinfo; ok = update_output_format (glimage_sink); GST_GLIMAGE_SINK_UNLOCK (glimage_sink); return ok; } /* Take the input_buffer and run it through 3D conversion if needed. * Called with glimagesink lock, but might drop it temporarily */ static gboolean prepare_next_buffer (GstGLImageSink * glimage_sink) { GstBuffer *in_buffer, *next_buffer, *old_buffer; GstBuffer *in_buffer2 = NULL, *next_buffer2 = NULL, *old_buffer2; GstBuffer *next_sync = NULL, *old_sync; GstGLSyncMeta *sync_meta; GstVideoFrame gl_frame; GstGLViewConvert *convert_views = NULL; GstVideoInfo *info; if (glimage_sink->input_buffer == NULL) return TRUE; /* No input buffer to process */ if (GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info) == GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME) { if (glimage_sink->input_buffer2 == NULL) return TRUE; /* Need 2nd input buffer to process */ in_buffer2 = gst_buffer_ref (glimage_sink->input_buffer2); } in_buffer = gst_buffer_ref (glimage_sink->input_buffer); if (glimage_sink->convert_views && (GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info) != GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->out_info) || GST_VIDEO_INFO_MULTIVIEW_FLAGS (&glimage_sink->in_info) != GST_VIDEO_INFO_MULTIVIEW_FLAGS (&glimage_sink->out_info))) convert_views = gst_object_ref (glimage_sink->convert_views); GST_GLIMAGE_SINK_UNLOCK (glimage_sink); if (convert_views) { info = &glimage_sink->out_info; if (gst_gl_view_convert_submit_input_buffer (glimage_sink->convert_views, GST_BUFFER_IS_DISCONT (in_buffer), in_buffer) != GST_FLOW_OK) { gst_buffer_replace (&in_buffer2, NULL); goto fail; } if (in_buffer2) { if (gst_gl_view_convert_submit_input_buffer (glimage_sink->convert_views, GST_BUFFER_IS_DISCONT (in_buffer2), in_buffer2) != GST_FLOW_OK) { goto fail; } } if (gst_gl_view_convert_get_output (glimage_sink->convert_views, &next_buffer) != GST_FLOW_OK) goto fail; if (GST_VIDEO_INFO_MULTIVIEW_MODE (info) == GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME) { if (gst_gl_view_convert_get_output (glimage_sink->convert_views, &next_buffer2) != GST_FLOW_OK) goto fail; } gst_object_unref (convert_views); convert_views = NULL; if (next_buffer == NULL) { /* Not ready to paint a buffer yet */ GST_GLIMAGE_SINK_LOCK (glimage_sink); return TRUE; } } else { next_buffer = in_buffer; info = &glimage_sink->in_info; } if (!glimage_sink->overlay_compositor) { if (!(glimage_sink->overlay_compositor = gst_gl_overlay_compositor_new (glimage_sink->context))) { gst_buffer_unref (next_buffer); goto fail; } } gst_gl_overlay_compositor_upload_overlays (glimage_sink->overlay_compositor, next_buffer); sync_meta = gst_buffer_get_gl_sync_meta (next_buffer); if (!sync_meta) { next_sync = gst_buffer_new (); sync_meta = gst_buffer_add_gl_sync_meta (glimage_sink->context, next_sync); gst_gl_sync_meta_set_sync_point (sync_meta, glimage_sink->context); } /* in_buffer invalid now */ if (!gst_video_frame_map (&gl_frame, info, next_buffer, GST_MAP_READ | GST_MAP_GL)) { gst_buffer_unref (next_buffer); GST_ERROR ("Failed to map video frame."); goto fail; } GST_GLIMAGE_SINK_LOCK (glimage_sink); glimage_sink->next_tex = *(guint *) gl_frame.data[0]; old_buffer = glimage_sink->next_buffer; glimage_sink->next_buffer = next_buffer; old_buffer2 = glimage_sink->next_buffer2; glimage_sink->next_buffer2 = next_buffer2; old_sync = glimage_sink->next_sync; glimage_sink->next_sync = next_sync; glimage_sink->next_sync_meta = sync_meta; /* Need to drop the lock again, to avoid a deadlock if we're * dropping the last ref on this buffer and it goes back to our * allocator */ GST_GLIMAGE_SINK_UNLOCK (glimage_sink); if (old_buffer) gst_buffer_unref (old_buffer); if (old_buffer2) gst_buffer_unref (old_buffer2); if (old_sync) gst_buffer_unref (old_sync); gst_video_frame_unmap (&gl_frame); GST_GLIMAGE_SINK_LOCK (glimage_sink); return TRUE; fail: if (convert_views) gst_object_unref (convert_views); GST_GLIMAGE_SINK_LOCK (glimage_sink); return FALSE; } static GstFlowReturn gst_glimage_sink_prepare (GstBaseSink * bsink, GstBuffer * buf) { GstGLImageSink *glimage_sink; GstGLSyncMeta *sync_meta; GstBuffer **target; GstBuffer *old_input; glimage_sink = GST_GLIMAGE_SINK (bsink); GST_TRACE ("preparing buffer:%p", buf); if (GST_VIDEO_SINK_WIDTH (glimage_sink) < 1 || GST_VIDEO_SINK_HEIGHT (glimage_sink) < 1) { return GST_FLOW_NOT_NEGOTIATED; } if (!_ensure_gl_setup (glimage_sink)) return GST_FLOW_NOT_NEGOTIATED; sync_meta = gst_buffer_get_gl_sync_meta (buf); if (sync_meta) gst_gl_sync_meta_wait (sync_meta, glimage_sink->context); GST_GLIMAGE_SINK_LOCK (glimage_sink); if (glimage_sink->window_resized) { glimage_sink->window_resized = FALSE; GST_GLIMAGE_SINK_UNLOCK (glimage_sink); GST_DEBUG_OBJECT (glimage_sink, "Sending reconfigure event on sinkpad."); gst_pad_push_event (GST_BASE_SINK (glimage_sink)->sinkpad, gst_event_new_reconfigure ()); GST_GLIMAGE_SINK_LOCK (glimage_sink); } target = &glimage_sink->input_buffer; if (GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info) == GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME && !GST_BUFFER_FLAG_IS_SET (buf, GST_VIDEO_BUFFER_FLAG_FIRST_IN_BUNDLE)) { target = &glimage_sink->input_buffer2; } old_input = *target; *target = gst_buffer_ref (buf); if (glimage_sink->output_mode_changed) update_output_format (glimage_sink); if (!prepare_next_buffer (glimage_sink)) { GST_GLIMAGE_SINK_UNLOCK (glimage_sink); if (old_input) gst_buffer_unref (old_input); goto convert_views_failed; } GST_GLIMAGE_SINK_UNLOCK (glimage_sink); if (old_input) gst_buffer_unref (old_input); if (glimage_sink->window_id != glimage_sink->new_window_id) { GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context); glimage_sink->window_id = glimage_sink->new_window_id; gst_gl_window_set_window_handle (window, glimage_sink->window_id); gst_object_unref (window); } return GST_FLOW_OK; convert_views_failed: { GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND, ("%s", "Failed to convert multiview video buffer"), (NULL)); return GST_FLOW_ERROR; } } static GstFlowReturn gst_glimage_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf) { GstGLImageSink *glimage_sink; GST_TRACE ("rendering buffer:%p", buf); glimage_sink = GST_GLIMAGE_SINK (vsink); GST_TRACE ("redisplay texture:%u of size:%ux%u, window size:%ux%u", glimage_sink->next_tex, GST_VIDEO_INFO_WIDTH (&glimage_sink->out_info), GST_VIDEO_INFO_HEIGHT (&glimage_sink->out_info), GST_VIDEO_SINK_WIDTH (glimage_sink), GST_VIDEO_SINK_HEIGHT (glimage_sink)); /* Ask the underlying window to redraw its content */ if (!gst_glimage_sink_redisplay (glimage_sink)) goto redisplay_failed; GST_TRACE ("post redisplay"); if (g_atomic_int_get (&glimage_sink->to_quit) != 0) { GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND, ("%s", "Quit requested"), (NULL)); return GST_FLOW_ERROR; } return GST_FLOW_OK; /* ERRORS */ redisplay_failed: { GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND, ("%s", "Window redisplay failed"), (NULL)); return GST_FLOW_ERROR; } } static void gst_glimage_sink_video_overlay_init (GstVideoOverlayInterface * iface) { iface->set_window_handle = gst_glimage_sink_set_window_handle; iface->set_render_rectangle = gst_glimage_sink_set_render_rectangle; iface->handle_events = gst_glimage_sink_handle_events; iface->expose = gst_glimage_sink_expose; } static void gst_glimage_sink_set_window_handle (GstVideoOverlay * overlay, guintptr id) { GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay); guintptr window_id = (guintptr) id; g_return_if_fail (GST_IS_GLIMAGE_SINK (overlay)); GST_DEBUG ("set_xwindow_id %" G_GUINT64_FORMAT, (guint64) window_id); glimage_sink->new_window_id = window_id; } static void gst_glimage_sink_expose (GstVideoOverlay * overlay) { GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay); /* redisplay opengl scene */ if (glimage_sink->display && glimage_sink->window_id) { if (glimage_sink->window_id != glimage_sink->new_window_id) { GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context); glimage_sink->window_id = glimage_sink->new_window_id; gst_gl_window_set_window_handle (window, glimage_sink->window_id); gst_object_unref (window); } gst_glimage_sink_redisplay (glimage_sink); } } static void gst_glimage_sink_handle_events (GstVideoOverlay * overlay, gboolean handle_events) { GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay); glimage_sink->handle_events = handle_events; if (G_LIKELY (glimage_sink->context)) { GstGLWindow *window; window = gst_gl_context_get_window (glimage_sink->context); gst_gl_window_handle_events (window, handle_events); gst_object_unref (window); } } static void gst_glimage_sink_set_render_rectangle (GstVideoOverlay * overlay, gint x, gint y, gint width, gint height) { GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay); if (G_LIKELY (glimage_sink->context)) { GstGLWindow *window; window = gst_gl_context_get_window (glimage_sink->context); gst_gl_window_set_render_rectangle (window, x, y, width, height); gst_object_unref (window); } glimage_sink->x = x; glimage_sink->y = y; glimage_sink->width = width; glimage_sink->height = height; } static gboolean gst_glimage_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query) { GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (bsink); GstStructure *config; GstCaps *caps; guint size; gboolean need_pool; GstStructure *allocation_meta = NULL; if (!_ensure_gl_setup (glimage_sink)) return FALSE; gst_query_parse_allocation (query, &caps, &need_pool); if (caps == NULL) goto no_caps; if (need_pool) { GstBufferPool *pool; GstVideoInfo info; if (!gst_video_info_from_caps (&info, caps)) goto invalid_caps; /* the normal size of a frame */ size = info.size; GST_DEBUG_OBJECT (glimage_sink, "create new pool"); pool = gst_gl_buffer_pool_new (glimage_sink->context); config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (config, caps, size, 0, 0); gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_GL_SYNC_META); if (!gst_buffer_pool_set_config (pool, config)) { g_object_unref (pool); goto config_failed; } /* we need at least 2 buffer because we hold on to the last one */ gst_query_add_allocation_pool (query, pool, size, 2, 0); g_object_unref (pool); } if (glimage_sink->context->gl_vtable->FenceSync) gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0); if (glimage_sink->window_width != 0 && glimage_sink->window_height != 0) { allocation_meta = gst_structure_new ("GstVideoOverlayCompositionMeta", "width", G_TYPE_UINT, glimage_sink->window_width, "height", G_TYPE_UINT, glimage_sink->window_height, NULL); GST_DEBUG ("sending alloc query with size %dx%d", glimage_sink->window_width, glimage_sink->window_height); } gst_query_add_allocation_meta (query, GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, allocation_meta); gst_query_add_allocation_meta (query, GST_VIDEO_AFFINE_TRANSFORMATION_META_API_TYPE, 0); if (allocation_meta) gst_structure_free (allocation_meta); return TRUE; /* ERRORS */ no_caps: { GST_WARNING_OBJECT (bsink, "no caps specified"); return FALSE; } invalid_caps: { GST_WARNING_OBJECT (bsink, "invalid caps specified"); return FALSE; } config_failed: { GST_WARNING_OBJECT (bsink, "failed setting config"); return FALSE; } } /* *INDENT-OFF* */ static const GLfloat vertices[] = { 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, -1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 1.0f }; static const GLushort indices[] = { 0, 1, 2, 0, 2, 3 }; /* *INDENT-ON* */ static void _bind_buffer (GstGLImageSink * gl_sink) { const GstGLFuncs *gl = gl_sink->context->gl_vtable; gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, gl_sink->vbo_indices); gl->BindBuffer (GL_ARRAY_BUFFER, gl_sink->vertex_buffer); /* Load the vertex position */ gl->VertexAttribPointer (gl_sink->attr_position, 3, GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), (void *) 0); /* Load the texture coordinate */ gl->VertexAttribPointer (gl_sink->attr_texture, 2, GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat))); gl->EnableVertexAttribArray (gl_sink->attr_position); gl->EnableVertexAttribArray (gl_sink->attr_texture); } static void _unbind_buffer (GstGLImageSink * gl_sink) { const GstGLFuncs *gl = gl_sink->context->gl_vtable; gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0); gl->BindBuffer (GL_ARRAY_BUFFER, 0); gl->DisableVertexAttribArray (gl_sink->attr_position); gl->DisableVertexAttribArray (gl_sink->attr_texture); } /* Called in the gl thread */ static void gst_glimage_sink_thread_init_redisplay (GstGLImageSink * gl_sink) { const GstGLFuncs *gl = gl_sink->context->gl_vtable; GError *error = NULL; GstGLSLStage *frag_stage, *vert_stage; vert_stage = gst_glsl_stage_new_with_string (gl_sink->context, GL_VERTEX_SHADER, GST_GLSL_VERSION_NONE, GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY, gst_gl_shader_string_vertex_mat4_vertex_transform); if (gl_sink->texture_target == GST_GL_TEXTURE_TARGET_EXTERNAL_OES) { frag_stage = gst_glsl_stage_new_with_string (gl_sink->context, GL_FRAGMENT_SHADER, GST_GLSL_VERSION_NONE, GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY, gst_gl_shader_string_fragment_external_oes_default); } else { frag_stage = gst_glsl_stage_new_default_fragment (gl_sink->context); } if (!vert_stage || !frag_stage) { GST_ERROR_OBJECT (gl_sink, "Failed to retreive fragment shader for " "texture target"); if (vert_stage) gst_object_unref (vert_stage); if (frag_stage) gst_object_unref (frag_stage); gst_glimage_sink_cleanup_glthread (gl_sink); return; } if (!(gl_sink->redisplay_shader = gst_gl_shader_new_link_with_stages (gl_sink->context, &error, vert_stage, frag_stage, NULL))) { GST_ERROR_OBJECT (gl_sink, "Failed to link shader: %s", error->message); gst_glimage_sink_cleanup_glthread (gl_sink); return; } gl_sink->attr_position = gst_gl_shader_get_attribute_location (gl_sink->redisplay_shader, "a_position"); gl_sink->attr_texture = gst_gl_shader_get_attribute_location (gl_sink->redisplay_shader, "a_texcoord"); if (gl->GenVertexArrays) { gl->GenVertexArrays (1, &gl_sink->vao); gl->BindVertexArray (gl_sink->vao); } if (!gl_sink->vertex_buffer) { gl->GenBuffers (1, &gl_sink->vertex_buffer); gl->BindBuffer (GL_ARRAY_BUFFER, gl_sink->vertex_buffer); gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices, GL_STATIC_DRAW); } if (!gl_sink->vbo_indices) { gl->GenBuffers (1, &gl_sink->vbo_indices); gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, gl_sink->vbo_indices); gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices, GL_STATIC_DRAW); } if (gl->GenVertexArrays) { _bind_buffer (gl_sink); gl->BindVertexArray (0); } gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0); gl->BindBuffer (GL_ARRAY_BUFFER, 0); } static void gst_glimage_sink_cleanup_glthread (GstGLImageSink * gl_sink) { const GstGLFuncs *gl = gl_sink->context->gl_vtable; if (gl_sink->redisplay_shader) { gst_object_unref (gl_sink->redisplay_shader); gl_sink->redisplay_shader = NULL; } if (gl_sink->vao) { gl->DeleteVertexArrays (1, &gl_sink->vao); gl_sink->vao = 0; } if (gl_sink->vertex_buffer) { gl->DeleteBuffers (1, &gl_sink->vertex_buffer); gl_sink->vertex_buffer = 0; } if (gl_sink->vbo_indices) { gl->DeleteBuffers (1, &gl_sink->vbo_indices); gl_sink->vbo_indices = 0; } if (gl_sink->overlay_compositor) gst_gl_overlay_compositor_free_overlays (gl_sink->overlay_compositor); } /* Called with object lock held */ static void gst_glimage_sink_on_resize (GstGLImageSink * gl_sink, gint width, gint height) { /* Here gl_sink members (ex:gl_sink->out_info) have a life time of set_caps. * It means that they cannot change between two set_caps */ const GstGLFuncs *gl; gboolean do_reshape; GST_DEBUG_OBJECT (gl_sink, "GL Window resized to %ux%u", width, height); /* check if a client reshape callback is registered */ g_signal_emit (gl_sink, gst_glimage_sink_signals[CLIENT_RESHAPE_SIGNAL], 0, gl_sink->context, width, height, &do_reshape); GST_GLIMAGE_SINK_LOCK (gl_sink); gl = gl_sink->context->gl_vtable; width = MAX (1, width); height = MAX (1, height); /* Check if we would suggest a different width/height now */ gl_sink->window_resized = ((gl_sink->window_width != width) || (gl_sink->window_height != height)) && (gl_sink->window_width != 0) && (gl_sink->window_height != 0); gl_sink->window_width = width; gl_sink->window_height = height; gst_gl_insert_debug_marker (gl_sink->context, "%s window resize to %ix%i", GST_OBJECT_NAME (gl_sink), width, height); /* default reshape */ if (!do_reshape) { if (gl_sink->keep_aspect_ratio) { GstVideoRectangle src, dst, result; src.x = 0; src.y = 0; if (gl_sink->current_rotate_method == GST_GL_ROTATE_METHOD_90R || gl_sink->current_rotate_method == GST_GL_ROTATE_METHOD_90L || gl_sink->current_rotate_method == GST_GL_ROTATE_METHOD_FLIP_UL_LR || gl_sink->current_rotate_method == GST_GL_ROTATE_METHOD_FLIP_UR_LL) { src.h = GST_VIDEO_SINK_WIDTH (gl_sink); src.w = GST_VIDEO_SINK_HEIGHT (gl_sink); } else { src.w = GST_VIDEO_SINK_WIDTH (gl_sink); src.h = GST_VIDEO_SINK_HEIGHT (gl_sink); } dst.x = 0; dst.y = 0; dst.w = width; dst.h = height; gst_video_sink_center_rect (src, dst, &result, TRUE); gl_sink->output_mode_changed |= (result.w != gl_sink->display_rect.w); gl_sink->output_mode_changed |= (result.h != gl_sink->display_rect.h); gl_sink->display_rect = result; } else { gl_sink->output_mode_changed |= (width != gl_sink->display_rect.w); gl_sink->output_mode_changed |= (height != gl_sink->display_rect.h); gl_sink->display_rect.x = 0; gl_sink->display_rect.y = 0; gl_sink->display_rect.w = width; gl_sink->display_rect.h = height; } gl->Viewport (gl_sink->display_rect.x, gl_sink->display_rect.y, gl_sink->display_rect.w, gl_sink->display_rect.h); GST_DEBUG_OBJECT (gl_sink, "GL output area now %u,%u %ux%u", gl_sink->display_rect.x, gl_sink->display_rect.y, gl_sink->display_rect.w, gl_sink->display_rect.h); } GST_GLIMAGE_SINK_UNLOCK (gl_sink); } static void gst_glimage_sink_on_draw (GstGLImageSink * gl_sink) { /* Here gl_sink members (ex:gl_sink->out_info) have a life time of set_caps. * It means that they cannot not change between two set_caps as well as * for the redisplay_texture size. * Whereas redisplay_texture id changes every sink_render */ const GstGLFuncs *gl = NULL; GstGLWindow *window = NULL; gboolean do_redisplay = FALSE; GstSample *sample = NULL; guint gl_target = gst_gl_texture_target_to_gl (gl_sink->texture_target); g_return_if_fail (GST_IS_GLIMAGE_SINK (gl_sink)); gl = gl_sink->context->gl_vtable; GST_GLIMAGE_SINK_LOCK (gl_sink); /* check if texture is ready for being drawn */ if (!gl_sink->redisplay_texture) { GST_GLIMAGE_SINK_UNLOCK (gl_sink); return; } window = gst_gl_context_get_window (gl_sink->context); window->is_drawing = TRUE; /* opengl scene */ gst_gl_insert_debug_marker (gl_sink->context, "%s element drawing texture %u", GST_OBJECT_NAME (gl_sink), gl_sink->redisplay_texture); GST_TRACE ("redrawing texture:%u", gl_sink->redisplay_texture); if (gl_sink->stored_sync_meta) gst_gl_sync_meta_wait (gl_sink->stored_sync_meta, gst_gl_context_get_current ()); /* make sure that the environnement is clean */ gst_gl_context_clear_shader (gl_sink->context); gl->BindTexture (gl_target, 0); sample = gst_sample_new (gl_sink->stored_buffer[0], gl_sink->out_caps, &GST_BASE_SINK (gl_sink)->segment, NULL); g_signal_emit (gl_sink, gst_glimage_sink_signals[CLIENT_DRAW_SIGNAL], 0, gl_sink->context, sample, &do_redisplay); gst_sample_unref (sample); if (gl_sink->stored_buffer[1]) { sample = gst_sample_new (gl_sink->stored_buffer[1], gl_sink->out_caps, &GST_BASE_SINK (gl_sink)->segment, NULL); g_signal_emit (gl_sink, gst_glimage_sink_signals[CLIENT_DRAW_SIGNAL], 0, gl_sink->context, sample, &do_redisplay); gst_sample_unref (sample); } if (!do_redisplay) { gfloat alpha = gl_sink->ignore_alpha ? 1.0f : 0.0f; gl->ClearColor (0.0, 0.0, 0.0, alpha); gl->Clear (GL_COLOR_BUFFER_BIT); if (gl_sink->ignore_alpha) { gl->BlendColor (0.0, 0.0, 0.0, alpha); gl->BlendFunc (GL_SRC_ALPHA, GL_CONSTANT_COLOR); gl->BlendEquation (GL_FUNC_ADD); gl->Enable (GL_BLEND); } gst_gl_shader_use (gl_sink->redisplay_shader); if (gl->GenVertexArrays) gl->BindVertexArray (gl_sink->vao); else _bind_buffer (gl_sink); gl->ActiveTexture (GL_TEXTURE0); gl->BindTexture (gl_target, gl_sink->redisplay_texture); gst_gl_shader_set_uniform_1i (gl_sink->redisplay_shader, "tex", 0); { GstVideoAffineTransformationMeta *af_meta; gfloat matrix[16]; af_meta = gst_buffer_get_video_affine_transformation_meta (gl_sink->stored_buffer[0]); gst_gl_get_affine_transformation_meta_as_ndc_ext (af_meta, matrix); if (gl_sink->transform_matrix) gst_gl_multiply_matrix4 (gl_sink->transform_matrix, matrix, matrix); gst_gl_shader_set_uniform_matrix_4fv (gl_sink->redisplay_shader, "u_transformation", 1, FALSE, matrix); } gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0); gl->BindTexture (gl_target, 0); gst_gl_context_clear_shader (gl_sink->context); if (gl->GenVertexArrays) gl->BindVertexArray (0); else _unbind_buffer (gl_sink); if (gl_sink->ignore_alpha) gl->Disable (GL_BLEND); gst_gl_overlay_compositor_draw_overlays (gl_sink->overlay_compositor); } /* end default opengl scene */ window->is_drawing = FALSE; gst_object_unref (window); GST_GLIMAGE_SINK_UNLOCK (gl_sink); } static void gst_glimage_sink_on_close (GstGLImageSink * gl_sink) { GstGLWindow *window; GST_WARNING_OBJECT (gl_sink, "Output window was closed"); window = gst_gl_context_get_window (gl_sink->context); if (gl_sink->key_sig_id) g_signal_handler_disconnect (window, gl_sink->key_sig_id); gl_sink->key_sig_id = 0; if (gl_sink->mouse_sig_id) g_signal_handler_disconnect (window, gl_sink->mouse_sig_id); gl_sink->mouse_sig_id = 0; g_atomic_int_set (&gl_sink->to_quit, 1); gst_object_unref (window); } static gboolean gst_glimage_sink_redisplay (GstGLImageSink * gl_sink) { GstGLWindow *window; GstBuffer *old_stored_buffer[2], *old_sync; gulong handler_id; window = gst_gl_context_get_window (gl_sink->context); if (!window) return FALSE; handler_id = g_signal_handler_find (GST_ELEMENT_PARENT (gl_sink), G_SIGNAL_MATCH_ID, gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_DRAW], 0, NULL, NULL, NULL); if (G_UNLIKELY (!gl_sink->redisplay_shader) && (!handler_id || !gl_sink->other_context)) { gst_gl_window_send_message (window, GST_GL_WINDOW_CB (gst_glimage_sink_thread_init_redisplay), gl_sink); /* if the shader is still null it means it failed to be useable */ if (G_UNLIKELY (!gl_sink->redisplay_shader)) { gst_object_unref (window); return FALSE; } gst_gl_window_set_preferred_size (window, GST_VIDEO_SINK_WIDTH (gl_sink), GST_VIDEO_SINK_HEIGHT (gl_sink)); gst_gl_window_show (window); } /* Recreate the output texture if needed */ GST_GLIMAGE_SINK_LOCK (gl_sink); if (gl_sink->window_resized) { gl_sink->window_resized = FALSE; GST_GLIMAGE_SINK_UNLOCK (gl_sink); GST_DEBUG_OBJECT (gl_sink, "Sending reconfigure event on sinkpad."); gst_pad_push_event (GST_BASE_SINK (gl_sink)->sinkpad, gst_event_new_reconfigure ()); GST_GLIMAGE_SINK_LOCK (gl_sink); } if (gl_sink->output_mode_changed && gl_sink->input_buffer != NULL) { GST_DEBUG ("Recreating output after mode/size change"); update_output_format (gl_sink); prepare_next_buffer (gl_sink); } if (gl_sink->next_buffer == NULL) { /* Nothing to display yet */ GST_GLIMAGE_SINK_UNLOCK (gl_sink); gst_object_unref (window); return TRUE; } /* Avoid to release the texture while drawing */ gl_sink->redisplay_texture = gl_sink->next_tex; old_stored_buffer[0] = gl_sink->stored_buffer[0]; old_stored_buffer[1] = gl_sink->stored_buffer[1]; gl_sink->stored_buffer[0] = gst_buffer_ref (gl_sink->next_buffer); if (gl_sink->next_buffer2) gl_sink->stored_buffer[1] = gst_buffer_ref (gl_sink->next_buffer2); else gl_sink->stored_buffer[1] = NULL; old_sync = gl_sink->stored_sync; if (gl_sink->next_sync) gl_sink->stored_sync = gst_buffer_ref (gl_sink->next_sync); else gl_sink->stored_sync = NULL; gl_sink->stored_sync_meta = gl_sink->next_sync_meta; GST_GLIMAGE_SINK_UNLOCK (gl_sink); gst_buffer_replace (old_stored_buffer, NULL); gst_buffer_replace (old_stored_buffer + 1, NULL); if (old_sync) gst_buffer_unref (old_sync); /* Drawing is asynchronous: gst_gl_window_draw is not blocking * It means that it does not wait for stuff to be executed in other threads */ gst_gl_window_draw (window); gst_object_unref (window); return TRUE; }