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.
129 lines
4.0 KiB
C
Vendored
129 lines
4.0 KiB
C
Vendored
/*
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstclapperimport.h"
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#include "gstclappergdkmemory.h"
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#include "gstgtkutils.h"
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#define GST_CAT_DEFAULT gst_clapper_import_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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static GstStaticPadTemplate gst_clapper_import_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (
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GST_VIDEO_CAPS_MAKE ("{ " GST_CLAPPER_GDK_MEMORY_FORMATS " }")));
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static GstStaticPadTemplate gst_clapper_import_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_CLAPPER_GDK_MEMORY,
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"{ " GST_CLAPPER_GDK_MEMORY_FORMATS " }")));
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#define parent_class gst_clapper_import_parent_class
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G_DEFINE_TYPE (GstClapperImport, gst_clapper_import, GST_TYPE_CLAPPER_BASE_IMPORT);
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GST_ELEMENT_REGISTER_DEFINE (clapperimport, "clapperimport", GST_RANK_NONE,
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GST_TYPE_CLAPPER_IMPORT);
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static GstBufferPool *
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gst_clapper_import_create_upstream_pool (GstClapperBaseImport *bi, GstStructure **config)
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{
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GstClapperImport *self = GST_CLAPPER_IMPORT_CAST (bi);
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GstBufferPool *pool;
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GST_DEBUG_OBJECT (self, "Creating new upstream pool");
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pool = gst_video_buffer_pool_new ();
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*config = gst_buffer_pool_get_config (pool);
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return pool;
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}
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static void
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video_frame_unmap_and_free (GstVideoFrame *frame)
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{
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gst_video_frame_unmap (frame);
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g_slice_free (GstVideoFrame, frame);
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}
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static GstFlowReturn
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gst_clapper_import_transform (GstBaseTransform *bt,
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GstBuffer *in_buf, GstBuffer *out_buf)
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{
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GstClapperBaseImport *bi = GST_CLAPPER_BASE_IMPORT_CAST (bt);
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GstVideoFrame *frame;
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GstMapInfo info;
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GstMemory *memory;
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frame = g_slice_new (GstVideoFrame);
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if (!gst_clapper_base_import_map_buffers (bi, in_buf, out_buf,
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GST_MAP_READ, GST_MAP_WRITE, frame, &info, &memory)) {
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g_slice_free (GstVideoFrame, frame);
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return GST_FLOW_ERROR;
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}
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/* Keep frame data alive as long as necessary,
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* unmap only after bytes are destroyed */
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GST_CLAPPER_GDK_MEMORY_CAST (memory)->texture = gst_video_frame_into_gdk_texture (
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frame, (GDestroyNotify) video_frame_unmap_and_free);
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gst_memory_unmap (memory, &info);
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return GST_FLOW_OK;
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}
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static void
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gst_clapper_import_init (GstClapperImport *self)
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{
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}
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static void
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gst_clapper_import_class_init (GstClapperImportClass *klass)
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{
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GstBaseTransformClass *gstbasetransform_class = (GstBaseTransformClass *) klass;
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GstClapperBaseImportClass *bi_class = (GstClapperBaseImportClass *) klass;
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "clapperimport", 0,
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"Clapper Import");
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gstbasetransform_class->transform = gst_clapper_import_transform;
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bi_class->create_upstream_pool = gst_clapper_import_create_upstream_pool;
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gst_element_class_set_metadata (gstelement_class,
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"Clapper import",
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"Filter/Video", "Imports RAW video data into ClapperGdkMemory",
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"Rafał Dzięgiel <rafostar.github@gmail.com>");
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_clapper_import_sink_template);
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_clapper_import_src_template);
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}
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