mirror of
https://github.com/Rafostar/clapper.git
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0061e133f9
Add new GStreamer plugin that consists of multiple elements for Clapper video player. The main difference is that unlike the old one, this does not operate using `GtkGLArea` anymore, but processes and displays `GdkTextures` directly through `GtkPicture` widget. Also this one is installed like any other GStreamer plugin, thus can be used via `gst-launch-1.0` binary or even used by other GTK4 apps if they wish to integrate it. This commit adds new video sink that uses a new kind of memory as input, called `ClapperGdkMemory`. With it comes a simple dedicated memory allocator, buffer pool and a `clapperimport` element that converts system mapped memory frames into `GdkTextures` that are later passed in our `ClapperGdkMemory` for the sink to display.
132 lines
3.5 KiB
C
Vendored
132 lines
3.5 KiB
C
Vendored
/*
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* GStreamer
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* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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* Copyright (C) 2015 Thibault Saunier <tsaunier@gnome.org>
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* Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "gstgtkutils.h"
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struct invoke_context
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{
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GThreadFunc func;
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gpointer data;
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GMutex lock;
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GCond cond;
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gboolean fired;
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gpointer res;
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};
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static gboolean
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gst_gtk_invoke_func (struct invoke_context *info)
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{
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g_mutex_lock (&info->lock);
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info->res = info->func (info->data);
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info->fired = TRUE;
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g_cond_signal (&info->cond);
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g_mutex_unlock (&info->lock);
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return G_SOURCE_REMOVE;
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}
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gpointer
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gst_gtk_invoke_on_main (GThreadFunc func, gpointer data)
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{
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GMainContext *main_context = g_main_context_default ();
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struct invoke_context info;
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g_mutex_init (&info.lock);
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g_cond_init (&info.cond);
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info.fired = FALSE;
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info.func = func;
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info.data = data;
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g_main_context_invoke (main_context, (GSourceFunc) gst_gtk_invoke_func,
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&info);
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g_mutex_lock (&info.lock);
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while (!info.fired)
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g_cond_wait (&info.cond, &info.lock);
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g_mutex_unlock (&info.lock);
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g_mutex_clear (&info.lock);
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g_cond_clear (&info.cond);
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return info.res;
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}
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/* For use with `GdkMemoryTexture` only! */
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GdkMemoryFormat
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gst_video_format_to_gdk_memory_format (GstVideoFormat format)
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{
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switch (format) {
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case GST_VIDEO_FORMAT_RGBA64_LE:
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case GST_VIDEO_FORMAT_RGBA64_BE:
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return GDK_MEMORY_R16G16B16A16_PREMULTIPLIED;
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case GST_VIDEO_FORMAT_RGBA:
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return GDK_MEMORY_R8G8B8A8;
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case GST_VIDEO_FORMAT_BGRA:
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return GDK_MEMORY_B8G8R8A8;
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case GST_VIDEO_FORMAT_ARGB:
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return GDK_MEMORY_A8R8G8B8;
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case GST_VIDEO_FORMAT_ABGR:
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return GDK_MEMORY_A8B8G8R8;
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case GST_VIDEO_FORMAT_RGBx:
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return GDK_MEMORY_R8G8B8A8_PREMULTIPLIED;
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case GST_VIDEO_FORMAT_BGRx:
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return GDK_MEMORY_B8G8R8A8_PREMULTIPLIED;
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case GST_VIDEO_FORMAT_RGB:
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return GDK_MEMORY_R8G8B8;
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case GST_VIDEO_FORMAT_BGR:
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return GDK_MEMORY_B8G8R8;
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default:
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break;
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}
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/* This should never happen as long as above switch statement
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* is updated when new formats are added to caps */
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g_assert_not_reached ();
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/* Fallback format */
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return GDK_MEMORY_R8G8B8A8_PREMULTIPLIED;
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}
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GdkTexture *
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gst_video_frame_into_gdk_texture (GstVideoFrame *frame, GDestroyNotify free_func)
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{
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GdkTexture *texture;
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GBytes *bytes;
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bytes = g_bytes_new_with_free_func (
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GST_VIDEO_FRAME_PLANE_DATA (frame, 0),
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GST_VIDEO_FRAME_HEIGHT (frame) * GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0),
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free_func, frame);
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texture = gdk_memory_texture_new (
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GST_VIDEO_FRAME_WIDTH (frame),
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GST_VIDEO_FRAME_HEIGHT (frame),
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gst_video_format_to_gdk_memory_format (GST_VIDEO_FRAME_FORMAT (frame)),
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bytes,
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GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0));
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g_bytes_unref (bytes);
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return texture;
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}
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