/* * GStreamer * Copyright (C) 2015 Matthew Waters * Copyright (C) 2015 Thibault Saunier * Copyright (C) 2022 Rafał Dzięgiel * * 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. */ #include "gstgtkutils.h" #define _IS_FRAME_PREMULTIPLIED(f) (GST_VIDEO_INFO_FLAG_IS_SET (&(f)->info, GST_VIDEO_FLAG_PREMULTIPLIED_ALPHA)) struct invoke_context { GThreadFunc func; gpointer data; GMutex lock; GCond cond; gboolean fired; gpointer res; }; static gboolean gst_gtk_invoke_func (struct invoke_context *info) { g_mutex_lock (&info->lock); info->res = info->func (info->data); info->fired = TRUE; g_cond_signal (&info->cond); g_mutex_unlock (&info->lock); return G_SOURCE_REMOVE; } gpointer gst_gtk_invoke_on_main (GThreadFunc func, gpointer data) { GMainContext *main_context = g_main_context_default (); struct invoke_context info; g_mutex_init (&info.lock); g_cond_init (&info.cond); info.fired = FALSE; info.func = func; info.data = data; g_main_context_invoke (main_context, (GSourceFunc) gst_gtk_invoke_func, &info); g_mutex_lock (&info.lock); while (!info.fired) g_cond_wait (&info.cond, &info.lock); g_mutex_unlock (&info.lock); g_mutex_clear (&info.lock); g_cond_clear (&info.cond); return info.res; } static GdkMemoryFormat gst_gdk_memory_format_from_frame (GstVideoFrame *frame) { switch (GST_VIDEO_FRAME_FORMAT (frame)) { case GST_VIDEO_FORMAT_RGBA64_LE: case GST_VIDEO_FORMAT_RGBA64_BE: return (_IS_FRAME_PREMULTIPLIED (frame)) ? GDK_MEMORY_R16G16B16A16_PREMULTIPLIED : GDK_MEMORY_R16G16B16A16; case GST_VIDEO_FORMAT_RGBA: return (_IS_FRAME_PREMULTIPLIED (frame)) ? GDK_MEMORY_R8G8B8A8_PREMULTIPLIED : GDK_MEMORY_R8G8B8A8; case GST_VIDEO_FORMAT_BGRA: return (_IS_FRAME_PREMULTIPLIED (frame)) ? GDK_MEMORY_B8G8R8A8_PREMULTIPLIED : GDK_MEMORY_B8G8R8A8; case GST_VIDEO_FORMAT_ARGB: return (_IS_FRAME_PREMULTIPLIED (frame)) ? GDK_MEMORY_A8R8G8B8_PREMULTIPLIED : GDK_MEMORY_A8R8G8B8; case GST_VIDEO_FORMAT_ABGR: /* GTK is missing premultiplied ABGR support */ return GDK_MEMORY_A8B8G8R8; case GST_VIDEO_FORMAT_RGBx: return GDK_MEMORY_R8G8B8A8_PREMULTIPLIED; case GST_VIDEO_FORMAT_BGRx: return GDK_MEMORY_B8G8R8A8_PREMULTIPLIED; case GST_VIDEO_FORMAT_RGB: return GDK_MEMORY_R8G8B8; case GST_VIDEO_FORMAT_BGR: return GDK_MEMORY_B8G8R8; default: break; } /* This should never happen as long as above switch statement * is updated when new formats are added to caps */ g_assert_not_reached (); /* Fallback format */ return GDK_MEMORY_R8G8B8A8_PREMULTIPLIED; } GdkTexture * gst_video_frame_into_gdk_texture (GstVideoFrame *frame) { GdkTexture *texture; GBytes *bytes; bytes = g_bytes_new_with_free_func ( GST_VIDEO_FRAME_PLANE_DATA (frame, 0), GST_VIDEO_FRAME_HEIGHT (frame) * GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0), (GDestroyNotify) gst_buffer_unref, gst_buffer_ref (frame->buffer)); texture = gdk_memory_texture_new ( GST_VIDEO_FRAME_WIDTH (frame), GST_VIDEO_FRAME_HEIGHT (frame), gst_gdk_memory_format_from_frame (frame), bytes, GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0)); g_bytes_unref (bytes); return texture; }