| /* |
| * GStreamer |
| * Copyright (C) 2003 Julien Moutte <julien@moutte.net> |
| * Copyright (C) 2005,2006,2007 David A. Schleef <ds@schleef.org> |
| * Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com> |
| * Copyright (C) 2015 Matthew Waters <matthew@centricular.com> |
| * |
| * 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. |
| * |
| * <refsect2> |
| * <title>Scaling</title> |
| * <para> |
| * 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. |
| * </para> |
| * </refsect2> |
| * <refsect2> |
| * <title>Events</title> |
| * <para> |
| * 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. |
| * </para> |
| * </refsect2> |
| * <refsect2> |
| * <title>Examples</title> |
| * |[ |
| * 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. |
| * </refsect2> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <gst/video/videooverlay.h> |
| #include <gst/video/navigation.h> |
| |
| #include "gstglimagesink.h" |
| #include "gstglsinkbin.h" |
| |
| #if GST_GL_HAVE_PLATFORM_EGL |
| #include <gst/gl/egl/gsteglimagememory.h> |
| #endif |
| |
| GST_DEBUG_CATEGORY (gst_debug_glimage_sink); |
| #define GST_CAT_DEFAULT gst_debug_glimage_sink |
| |
| #define DEFAULT_SHOW_PREROLL_FRAME TRUE |
| #define DEFAULT_SYNC TRUE |
| #define DEFAULT_MAX_LATENESS -1 |
| #define DEFAULT_QOS FALSE |
| #define DEFAULT_ASYNC TRUE |
| #define DEFAULT_TS_OFFSET 0 |
| #define DEFAULT_BLOCKSIZE 4096 |
| #define DEFAULT_RENDER_DELAY 0 |
| #define DEFAULT_ENABLE_LAST_SAMPLE TRUE |
| #define DEFAULT_THROTTLE_TIME 0 |
| #define DEFAULT_MAX_BITRATE 0 |
| #define DEFAULT_HANDLE_EVENTS TRUE |
| #define DEFAULT_FORCE_ASPECT_RATIO TRUE |
| |
| 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_FORCE_ASPECT_RATIO, |
| PROP_BIN_PIXEL_ASPECT_RATIO, |
| PROP_BIN_HANDLE_EVENTS, |
| PROP_BIN_CONTEXT, |
| PROP_BIN_SHOW_PREROLL_FRAME, |
| PROP_BIN_SYNC, |
| PROP_BIN_MAX_LATENESS, |
| PROP_BIN_QOS, |
| PROP_BIN_ASYNC, |
| PROP_BIN_TS_OFFSET, |
| PROP_BIN_ENABLE_LAST_SAMPLE, |
| PROP_BIN_LAST_SAMPLE, |
| PROP_BIN_BLOCKSIZE, |
| PROP_BIN_RENDER_DELAY, |
| PROP_BIN_THROTTLE_TIME, |
| PROP_BIN_MAX_BITRATE, |
| }; |
| |
| 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; |
| } |
| |
| 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_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 ("ignore-alpha", "Ignore Alpha", |
| "When enabled, alpha will be ignored and converted to black", |
| DEFAULT_HANDLE_EVENTS, 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_GL_TYPE_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)); |
| |
| /* base sink */ |
| g_object_class_install_property (gobject_class, PROP_BIN_SYNC, |
| g_param_spec_boolean ("sync", "Sync", "Sync on the clock", DEFAULT_SYNC, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_MAX_LATENESS, |
| g_param_spec_int64 ("max-lateness", "Max Lateness", |
| "Maximum number of nanoseconds that a buffer can be late before it " |
| "is dropped (-1 unlimited)", -1, G_MAXINT64, DEFAULT_MAX_LATENESS, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_QOS, |
| g_param_spec_boolean ("qos", "Qos", |
| "Generate Quality-of-Service events upstream", DEFAULT_QOS, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_ASYNC, |
| g_param_spec_boolean ("async", "Async", |
| "Go asynchronously to PAUSED", DEFAULT_ASYNC, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_TS_OFFSET, |
| g_param_spec_int64 ("ts-offset", "TS Offset", |
| "Timestamp offset in nanoseconds", G_MININT64, G_MAXINT64, |
| DEFAULT_TS_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_ENABLE_LAST_SAMPLE, |
| g_param_spec_boolean ("enable-last-sample", "Enable Last Buffer", |
| "Enable the last-sample property", DEFAULT_ENABLE_LAST_SAMPLE, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_LAST_SAMPLE, |
| g_param_spec_boxed ("last-sample", "Last Sample", |
| "The last sample received in the sink", GST_TYPE_SAMPLE, |
| G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_BLOCKSIZE, |
| g_param_spec_uint ("blocksize", "Block size", |
| "Size in bytes to pull per buffer (0 = default)", 0, G_MAXUINT, |
| DEFAULT_BLOCKSIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_RENDER_DELAY, |
| g_param_spec_uint64 ("render-delay", "Render Delay", |
| "Additional render delay of the sink in nanoseconds", 0, G_MAXUINT64, |
| DEFAULT_RENDER_DELAY, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_THROTTLE_TIME, |
| g_param_spec_uint64 ("throttle-time", "Throttle time", |
| "The time to keep between rendered buffers (0 = disabled)", 0, |
| G_MAXUINT64, DEFAULT_THROTTLE_TIME, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_BIN_MAX_BITRATE, |
| g_param_spec_uint64 ("max-bitrate", "Max Bitrate", |
| "The maximum bits per second to render (0 = disabled)", 0, |
| G_MAXUINT64, DEFAULT_MAX_BITRATE, |
| 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_GL_TYPE_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_GL_TYPE_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_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_handle_events (GstVideoOverlay * overlay, |
| gboolean handle_events); |
| |
| static GstStaticPadTemplate gst_glimage_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES |
| (GST_CAPS_FEATURE_MEMORY_GL_MEMORY, |
| "RGBA")) |
| ); |
| |
| enum |
| { |
| ARG_0, |
| ARG_DISPLAY, |
| PROP_FORCE_ASPECT_RATIO, |
| PROP_PIXEL_ASPECT_RATIO, |
| PROP_CONTEXT, |
| PROP_HANDLE_EVENTS, |
| PROP_IGNORE_ALPHA, |
| }; |
| |
| enum |
| { |
| SIGNAL_0, |
| CLIENT_DRAW_SIGNAL, |
| CLIENT_RESHAPE_SIGNAL, |
| LAST_SIGNAL |
| }; |
| |
| static guint gst_glimage_sink_signals[LAST_SIGNAL] = { 0 }; |
| |
| static void |
| gst_glimage_sink_navigation_send_event (GstNavigation * navigation, GstStructure |
| * structure) |
| { |
| GstGLImageSink *sink = GST_GLIMAGE_SINK (navigation); |
| GstEvent *event = NULL; |
| GstPad *pad = NULL; |
| GstGLWindow *window; |
| guint width, height; |
| gdouble x, y, xscale, yscale; |
| |
| if (!sink->context) |
| return; |
| |
| window = gst_gl_context_get_window (sink->context); |
| g_return_if_fail (GST_GL_IS_WINDOW (window)); |
| |
| width = GST_VIDEO_SINK_WIDTH (sink); |
| height = GST_VIDEO_SINK_HEIGHT (sink); |
| gst_gl_window_get_surface_dimensions (window, &width, &height); |
| |
| event = gst_event_new_navigation (structure); |
| |
| pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (sink)); |
| /* Converting pointer coordinates to the non scaled geometry */ |
| if (width != GST_VIDEO_SINK_WIDTH (sink) && |
| width != 0 && gst_structure_get_double (structure, "pointer_x", &x)) { |
| xscale = (gdouble) GST_VIDEO_SINK_WIDTH (sink) / width; |
| gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, |
| (gdouble) x * xscale, NULL); |
| } |
| if (height != GST_VIDEO_SINK_HEIGHT (sink) && |
| height != 0 && gst_structure_get_double (structure, "pointer_y", &y)) { |
| yscale = (gdouble) GST_VIDEO_SINK_HEIGHT (sink) / height; |
| gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE, |
| (gdouble) y * yscale, NULL); |
| } |
| |
| |
| if (GST_IS_PAD (pad) && GST_IS_EVENT (event)) |
| gst_pad_send_event (pad, event); |
| |
| gst_object_unref (pad); |
| 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, ARG_DISPLAY, |
| g_param_spec_string ("display", "Display", "Display name", |
| NULL, 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_GL_TYPE_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", TRUE, |
| 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", TRUE, |
| 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 <julien.isorce@gmail.com>"); |
| |
| /** |
| * 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_GL_TYPE_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_GL_TYPE_CONTEXT, G_TYPE_UINT, G_TYPE_UINT); |
| |
| gst_element_class_add_pad_template (element_class, |
| gst_static_pad_template_get (&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->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->display_name = NULL; |
| 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->pool = NULL; |
| glimage_sink->stored_buffer = NULL; |
| glimage_sink->redisplay_texture = 0; |
| glimage_sink->handle_events = TRUE; |
| glimage_sink->ignore_alpha = TRUE; |
| |
| 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 ARG_DISPLAY: |
| { |
| g_free (glimage_sink->display_name); |
| glimage_sink->display_name = g_strdup (g_value_get_string (value)); |
| 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; |
| 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); |
| |
| g_free (glimage_sink->display_name); |
| |
| 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 ARG_DISPLAY: |
| g_value_set_string (value, glimage_sink->display_name); |
| 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; |
| 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, "glimagesink 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, "glimagesink 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_DEBUG_OBJECT (gl_sink, "Ensuring setup"); |
| |
| if (!gl_sink->context) { |
| GST_OBJECT_LOCK (gl_sink->display); |
| do { |
| GstGLContext *other_context; |
| GstGLWindow *window; |
| |
| if (gl_sink->context) |
| gst_object_unref (gl_sink->context); |
| |
| GST_DEBUG_OBJECT (gl_sink, |
| "No current context, creating one for %" GST_PTR_FORMAT, |
| gl_sink->display); |
| |
| gl_sink->context = gst_gl_context_new (gl_sink->display); |
| if (!gl_sink->context) |
| goto context_creation_error; |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| GST_DEBUG_OBJECT (gl_sink, |
| "creating context %" GST_PTR_FORMAT " from other context %" |
| GST_PTR_FORMAT, gl_sink->context, other_context); |
| |
| if (!gst_gl_context_create (gl_sink->context, other_context, &error)) { |
| if (other_context) |
| gst_object_unref (other_context); |
| gst_object_unref (window); |
| goto context_error; |
| } |
| |
| 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 (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_DEBUG_OBJECT (gl_sink, "Already have a context"); |
| |
| return TRUE; |
| |
| context_creation_error: |
| { |
| GST_ELEMENT_ERROR (gl_sink, RESOURCE, NOT_FOUND, |
| ("Failed to create GL context"), (NULL)); |
| return FALSE; |
| } |
| |
| context_error: |
| { |
| GST_ELEMENT_ERROR (gl_sink, RESOURCE, NOT_FOUND, ("%s", error->message), |
| (NULL)); |
| gst_object_unref (gl_sink->context); |
| gl_sink->context = NULL; |
| return FALSE; |
| } |
| } |
| |
| 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: |
| { |
| const gchar *context_type; |
| GstContext *context, *old_context; |
| |
| res = gst_gl_handle_context_query ((GstElement *) glimage_sink, query, |
| &glimage_sink->display, &glimage_sink->other_context); |
| if (glimage_sink->display) |
| gst_gl_display_filter_gl_api (glimage_sink->display, SUPPORTED_GL_APIS); |
| |
| gst_query_parse_context_type (query, &context_type); |
| |
| if (g_strcmp0 (context_type, "gst.gl.local_context") == 0) { |
| GstStructure *s; |
| |
| gst_query_parse_context (query, &old_context); |
| |
| if (old_context) |
| context = gst_context_copy (old_context); |
| else |
| context = gst_context_new ("gst.gl.local_context", FALSE); |
| |
| s = gst_context_writable_structure (context); |
| gst_structure_set (s, "context", GST_GL_TYPE_CONTEXT, |
| glimage_sink->context, NULL); |
| gst_query_set_context (query, context); |
| gst_context_unref (context); |
| |
| res = glimage_sink->context != NULL; |
| } |
| GST_LOG_OBJECT (glimage_sink, "context query of type %s %i", context_type, |
| res); |
| |
| if (res) |
| return res; |
| break; |
| } |
| case GST_QUERY_DRAIN: |
| { |
| GstBuffer *buf = NULL; |
| |
| GST_GLIMAGE_SINK_LOCK (glimage_sink); |
| glimage_sink->redisplay_texture = 0; |
| buf = glimage_sink->stored_buffer; |
| glimage_sink->stored_buffer = NULL; |
| GST_GLIMAGE_SINK_UNLOCK (glimage_sink); |
| |
| if (buf) |
| gst_buffer_unref (buf); |
| |
| gst_buffer_replace (&glimage_sink->next_buffer, 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); |
| } |
| |
| 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); |
| break; |
| case GST_STATE_CHANGE_READY_TO_PAUSED: |
| if (!_ensure_gl_setup (glimage_sink)) |
| return GST_STATE_CHANGE_FAILURE; |
| |
| 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: |
| { |
| /* mark the redisplay_texture as unavailable (=0) |
| * to avoid drawing |
| */ |
| GST_GLIMAGE_SINK_LOCK (glimage_sink); |
| glimage_sink->redisplay_texture = 0; |
| if (glimage_sink->stored_buffer) { |
| gst_buffer_unref (glimage_sink->stored_buffer); |
| glimage_sink->stored_buffer = NULL; |
| } |
| GST_GLIMAGE_SINK_UNLOCK (glimage_sink); |
| gst_buffer_replace (&glimage_sink->next_buffer, 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->caps) { |
| gst_caps_unref (glimage_sink->caps); |
| glimage_sink->caps = NULL; |
| } |
| |
| /* we're losing the context, this pool is no use anymore */ |
| if (glimage_sink->pool) { |
| gst_object_unref (glimage_sink->pool); |
| glimage_sink->pool = 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; |
| } |
| break; |
| } |
| case GST_STATE_CHANGE_READY_TO_NULL: |
| 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->info) > 0) { |
| *end = *start + |
| gst_util_uint64_scale_int (GST_SECOND, |
| GST_VIDEO_INFO_FPS_D (&glimagesink->info), |
| GST_VIDEO_INFO_FPS_N (&glimagesink->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) { |
| result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST); |
| gst_caps_unref (tmp); |
| } else { |
| result = tmp; |
| } |
| |
| GST_DEBUG_OBJECT (bsink, "returning caps: %" GST_PTR_FORMAT, result); |
| |
| return result; |
| } |
| |
| static gboolean |
| gst_glimage_sink_set_caps (GstBaseSink * bsink, GstCaps * caps) |
| { |
| GstGLImageSink *glimage_sink; |
| 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; |
| 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; |
| |
| 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)); |
| |
| glimage_sink->info = vinfo; |
| glimage_sink->caps = gst_caps_ref (caps); |
| |
| if (!_ensure_gl_setup (glimage_sink)) |
| return FALSE; |
| |
| glimage_sink->caps_change = TRUE; |
| |
| return TRUE; |
| } |
| |
| static GstFlowReturn |
| gst_glimage_sink_prepare (GstBaseSink * bsink, GstBuffer * buf) |
| { |
| GstGLImageSink *glimage_sink; |
| GstVideoFrame gl_frame; |
| |
| 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; |
| |
| if (!gst_video_frame_map (&gl_frame, &glimage_sink->info, buf, |
| GST_MAP_READ | GST_MAP_GL)) { |
| goto upload_failed; |
| } |
| |
| glimage_sink->next_tex = *(guint *) gl_frame.data[0]; |
| |
| gst_buffer_replace (&glimage_sink->next_buffer, buf); |
| |
| gst_video_frame_unmap (&gl_frame); |
| |
| 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; |
| |
| upload_failed: |
| { |
| GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND, |
| ("%s", "Failed to upload buffer"), (NULL)); |
| return GST_FLOW_ERROR; |
| } |
| } |
| |
| static GstFlowReturn |
| gst_glimage_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf) |
| { |
| GstGLImageSink *glimage_sink; |
| GstBuffer *stored_buffer; |
| |
| 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->info), |
| GST_VIDEO_INFO_HEIGHT (&glimage_sink->info), |
| GST_VIDEO_SINK_WIDTH (glimage_sink), |
| GST_VIDEO_SINK_HEIGHT (glimage_sink)); |
| |
| /* Avoid to release the texture while drawing */ |
| GST_GLIMAGE_SINK_LOCK (glimage_sink); |
| glimage_sink->redisplay_texture = glimage_sink->next_tex; |
| stored_buffer = glimage_sink->stored_buffer; |
| glimage_sink->stored_buffer = gst_buffer_ref (glimage_sink->next_buffer); |
| GST_GLIMAGE_SINK_UNLOCK (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 (stored_buffer) |
| gst_buffer_unref (stored_buffer); |
| |
| if (g_atomic_int_get (&glimage_sink->to_quit) != 0) { |
| GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND, |
| ("%s", gst_gl_context_get_error ()), (NULL)); |
| return GST_FLOW_ERROR; |
| } |
| |
| return GST_FLOW_OK; |
| |
| /* ERRORS */ |
| redisplay_failed: |
| { |
| GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND, |
| ("%s", gst_gl_context_get_error ()), (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->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 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; |
| |
| 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) { |
| GstVideoInfo info; |
| |
| if (!gst_video_info_from_caps (&info, caps)) |
| goto invalid_caps; |
| |
| /* the normal size of a frame */ |
| size = info.size; |
| |
| if (glimage_sink->pool) { |
| GstCaps *pcaps; |
| |
| /* we had a pool, check caps */ |
| GST_DEBUG_OBJECT (glimage_sink, "check existing pool caps"); |
| config = gst_buffer_pool_get_config (glimage_sink->pool); |
| gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL); |
| |
| if (!gst_caps_is_equal (caps, pcaps)) { |
| GST_DEBUG_OBJECT (glimage_sink, "pool has different caps"); |
| /* different caps, we can't use this pool */ |
| gst_object_unref (glimage_sink->pool); |
| glimage_sink->pool = NULL; |
| } |
| gst_structure_free (config); |
| } |
| |
| if (glimage_sink->pool == NULL) { |
| GST_DEBUG_OBJECT (glimage_sink, "create new pool"); |
| |
| glimage_sink->pool = gst_gl_buffer_pool_new (glimage_sink->context); |
| config = gst_buffer_pool_get_config (glimage_sink->pool); |
| gst_buffer_pool_config_set_params (config, caps, size, 0, 0); |
| |
| if (!gst_buffer_pool_set_config (glimage_sink->pool, config)) |
| goto config_failed; |
| } |
| |
| /* we need at least 2 buffer because we hold on to the last one */ |
| gst_query_add_allocation_pool (query, glimage_sink->pool, size, 2, 0); |
| } |
| |
| if (glimage_sink->context->gl_vtable->FenceSync) |
| gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0); |
| |
| 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 |
| }; |
| /* *INDENT-ON* */ |
| |
| static void |
| _bind_buffer (GstGLImageSink * gl_sink) |
| { |
| const GstGLFuncs *gl = gl_sink->context->gl_vtable; |
| |
| gl->BindBuffer (GL_ARRAY_BUFFER, gl_sink->vertex_buffer); |
| gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices, |
| GL_STATIC_DRAW); |
| |
| /* 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_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; |
| |
| gl_sink->redisplay_shader = gst_gl_shader_new (gl_sink->context); |
| |
| if (!gst_gl_shader_compile_with_default_vf_and_check |
| (gl_sink->redisplay_shader, &gl_sink->attr_position, |
| &gl_sink->attr_texture)) |
| gst_glimage_sink_cleanup_glthread (gl_sink); |
| |
| if (gl->GenVertexArrays) { |
| gl->GenVertexArrays (1, &gl_sink->vao); |
| gl->BindVertexArray (gl_sink->vao); |
| } |
| |
| gl->GenBuffers (1, &gl_sink->vertex_buffer); |
| _bind_buffer (gl_sink); |
| |
| if (gl->GenVertexArrays) { |
| gl->BindVertexArray (0); |
| gl->BindBuffer (GL_ARRAY_BUFFER, 0); |
| } else { |
| _unbind_buffer (gl_sink); |
| } |
| } |
| |
| 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; |
| } |
| } |
| |
| static void |
| gst_glimage_sink_on_resize (GstGLImageSink * gl_sink, gint width, gint height) |
| { |
| /* Here gl_sink members (ex:gl_sink->info) have a life time of set_caps. |
| * It means that they cannot not change between two set_caps |
| */ |
| const GstGLFuncs *gl = gl_sink->context->gl_vtable; |
| gboolean do_reshape; |
| |
| GST_TRACE ("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); |
| |
| width = MAX (1, width); |
| height = MAX (1, height); |
| |
| gl_sink->window_width = width; |
| gl_sink->window_height = height; |
| |
| /* default reshape */ |
| if (!do_reshape) { |
| if (gl_sink->keep_aspect_ratio) { |
| GstVideoRectangle src, dst, result; |
| |
| src.x = 0; |
| src.y = 0; |
| 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->Viewport (result.x, result.y, result.w, result.h); |
| } else { |
| gl->Viewport (0, 0, width, height); |
| } |
| } |
| } |
| |
| static void |
| gst_glimage_sink_on_draw (GstGLImageSink * gl_sink) |
| { |
| /* Here gl_sink members (ex:gl_sink->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; |
| GstGLSyncMeta *sync_meta = NULL; |
| GstSample *sample = NULL; |
| |
| 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_TRACE ("redrawing texture:%u", gl_sink->redisplay_texture); |
| |
| if (gl_sink->caps_change && gl_sink->window_width > 0 |
| && gl_sink->window_height > 0) { |
| GST_GLIMAGE_SINK_UNLOCK (gl_sink); |
| gst_glimage_sink_on_resize (gl_sink, gl_sink->window_width, |
| gl_sink->window_height); |
| GST_GLIMAGE_SINK_LOCK (gl_sink); |
| gl_sink->caps_change = FALSE; |
| } |
| |
| sync_meta = gst_buffer_get_gl_sync_meta (gl_sink->stored_buffer); |
| if (sync_meta) |
| gst_gl_sync_meta_wait (sync_meta, gl_sink->context); |
| |
| /* make sure that the environnement is clean */ |
| gst_gl_context_clear_shader (gl_sink->context); |
| |
| #if GST_GL_HAVE_OPENGL |
| if (USING_OPENGL (gl_sink->context)) |
| gl->Disable (GL_TEXTURE_2D); |
| #endif |
| |
| gl->BindTexture (GL_TEXTURE_2D, 0); |
| |
| sample = gst_sample_new (gl_sink->stored_buffer, |
| gl_sink->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; |
| GLushort indices[] = { 0, 1, 2, 0, 2, 3 }; |
| |
| 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_TEXTURE_2D, gl_sink->redisplay_texture); |
| gst_gl_shader_set_uniform_1i (gl_sink->redisplay_shader, "tex", 0); |
| |
| gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices); |
| |
| 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); |
| } |
| /* 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_gl_context_set_error (gl_sink->context, "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; |
| gboolean alive; |
| |
| window = gst_gl_context_get_window (gl_sink->context); |
| if (!window) |
| return FALSE; |
| |
| if (gst_gl_window_is_running (window)) { |
| gulong 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); |
| } |
| |
| /* 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); |
| } |
| alive = gst_gl_window_is_running (window); |
| gst_object_unref (window); |
| |
| return alive; |
| } |