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Except for gst/gl/gstglfuncs.h It is up to the client app to include these headers. It is coherent with the fact that gstreamer-gl.pc does not require any egl.pc/gles.pc. I.e. it is the responsability of the app to search these headers within its build setup. For example gstreamer-vaapi includes explicitly EGL/egl.h and search for it in its configure.ac. For example with this patch, if an app includes the headers gst/gl/egl/gstglcontext_egl.h gst/gl/egl/gstgldisplay_egl.h gst/gl/egl/gstglmemoryegl.h it will *no longer* automatically include EGL/egl.h and GLES2/gl2.h. Which is good because the app might want to use the gstgl api only without the need to bother about gl headers. Also added a test: cd tests/check && make libs/gstglheaders.check https://bugzilla.gnome.org/show_bug.cgi?id=784779
275 lines
7.9 KiB
C
275 lines
7.9 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Collabora Ltd.
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* @author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) 2014 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2015 Igalia
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* Author: Gwang Yoon Hwang <yoon@igalia.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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/**
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* SECTION:gstglmemoryegl
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* @short_description: memory subclass for EGLImage's
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* @see_also: #GstGLMemory, #GstGLAllocator, #GstGLBufferPool
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*
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* #GstGLMemoryEGL is created or wrapped through gst_gl_base_memory_alloc()
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* with #GstGLVideoAllocationParams.
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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 <string.h>
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#include "gstglmemoryegl.h"
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#include <gst/gl/gstglfuncs.h>
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#include "gstegl.h"
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#include "gsteglimage.h"
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#include "gstglcontext_egl.h"
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static GstAllocator *_gl_memory_egl_allocator;
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_GL_MEMORY);
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#define GST_CAT_DEFAULT GST_CAT_GL_MEMORY
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#define parent_class gst_gl_memory_egl_allocator_parent_class
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G_DEFINE_TYPE (GstGLMemoryEGLAllocator, gst_gl_memory_egl_allocator,
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GST_TYPE_GL_MEMORY_ALLOCATOR);
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/**
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* gst_is_gl_memory_egl:
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* @mem: a #GstMemory to test
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*
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* Returns: whether @mem is a #GstGLMemoryEGL
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*
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* Since: 1.10
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*/
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gboolean
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gst_is_gl_memory_egl (GstMemory * mem)
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{
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return mem != NULL && mem->allocator != NULL
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&& g_type_is_a (G_OBJECT_TYPE (mem->allocator),
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GST_TYPE_GL_MEMORY_EGL_ALLOCATOR);
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}
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static GstGLMemoryEGL *
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_gl_mem_get_parent (GstGLMemoryEGL * gl_mem)
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{
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GstGLMemoryEGL *parent = (GstGLMemoryEGL *) gl_mem->mem.mem.mem.parent;
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return parent ? parent : gl_mem;
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}
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/**
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* gst_gl_memory_egl_get_image:
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* @mem: a #GstGLMemoryEGL
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*
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* Returns: The EGLImage held by @mem
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*
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* Since: 1.10
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*/
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gpointer
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gst_gl_memory_egl_get_image (GstGLMemoryEGL * mem)
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{
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g_return_val_if_fail (gst_is_gl_memory_egl (GST_MEMORY_CAST (mem)),
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EGL_NO_IMAGE_KHR);
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return gst_egl_image_get_image (_gl_mem_get_parent (mem)->image);
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}
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/**
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* gst_gl_memory_egl_get_display:
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* @mem: a #GstGLMemoryEGL
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*
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* Returns: The EGLDisplay @mem is associated with
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*
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* Since: 1.10
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*/
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gpointer
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gst_gl_memory_egl_get_display (GstGLMemoryEGL * mem)
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{
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g_return_val_if_fail (gst_is_gl_memory_egl (GST_MEMORY_CAST (mem)), NULL);
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return GST_GL_CONTEXT_EGL (_gl_mem_get_parent (mem)->mem.mem.
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context)->egl_display;
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}
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static GstMemory *
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_gl_mem_alloc (GstAllocator * allocator, gsize size,
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GstAllocationParams * params)
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{
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g_warning ("Use gst_gl_base_memory_allocator_alloc() to allocate from this "
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"GstGLMemoryEGL allocator");
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return NULL;
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}
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static void
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_gl_mem_destroy (GstGLMemoryEGL * mem)
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{
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if (mem->image)
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gst_egl_image_unref (mem->image);
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GST_GL_BASE_MEMORY_ALLOCATOR_CLASS (parent_class)->destroy ((GstGLBaseMemory
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*) mem);
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}
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static GstGLMemoryEGL *
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_gl_mem_egl_alloc (GstGLBaseMemoryAllocator * allocator,
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GstGLVideoAllocationParams * params)
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{
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guint alloc_flags = params->parent.alloc_flags;
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GstGLMemoryEGL *mem;
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g_return_val_if_fail (alloc_flags & GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_VIDEO,
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NULL);
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g_return_val_if_fail ((alloc_flags &
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GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM) == 0, NULL);
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if (alloc_flags & GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE) {
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g_return_val_if_fail (GST_IS_EGL_IMAGE (params->parent.gl_handle), NULL);
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}
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mem = g_new0 (GstGLMemoryEGL, 1);
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if (alloc_flags & GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE) {
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if (params->target != GST_GL_TEXTURE_TARGET_2D) {
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g_free (mem);
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GST_CAT_ERROR (GST_CAT_GL_MEMORY, "GstGLMemoryEGL only supports wrapping "
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"2D textures");
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return NULL;
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}
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mem->image = gst_egl_image_ref (params->parent.gl_handle);
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}
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gst_gl_memory_init (GST_GL_MEMORY_CAST (mem), GST_ALLOCATOR_CAST (allocator),
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NULL, params->parent.context, params->target, params->tex_format,
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params->parent.alloc_params, params->v_info, params->plane,
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params->valign, params->parent.user_data, params->parent.notify);
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if (!mem->image) {
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gst_allocator_free (GST_ALLOCATOR_CAST (allocator), GST_MEMORY_CAST (mem));
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return NULL;
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}
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return mem;
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}
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static gboolean
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_gl_mem_create (GstGLMemoryEGL * gl_mem, GError ** error)
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{
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GstGLContext *context = gl_mem->mem.mem.context;
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const GstGLFuncs *gl = context->gl_vtable;
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GstGLBaseMemoryAllocatorClass *alloc_class;
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if (!gst_gl_context_check_feature (GST_GL_CONTEXT (context),
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"EGL_KHR_image_base")) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
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"EGL_KHR_image_base is not supported");
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return FALSE;
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}
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alloc_class = GST_GL_BASE_MEMORY_ALLOCATOR_CLASS (parent_class);
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if (!alloc_class->create ((GstGLBaseMemory *) gl_mem, error))
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return FALSE;
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if (gl_mem->image == NULL) {
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gl_mem->image = gst_egl_image_from_texture (context,
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(GstGLMemory *) gl_mem, NULL);
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if (!gl_mem->image) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
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"Failed to create EGLImage");
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return FALSE;
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}
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} else {
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gl->ActiveTexture (GL_TEXTURE0 + gl_mem->mem.plane);
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gl->BindTexture (GL_TEXTURE_2D, gl_mem->mem.tex_id);
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gl->EGLImageTargetTexture2D (GL_TEXTURE_2D,
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gst_egl_image_get_image (GST_EGL_IMAGE (gl_mem->image)));
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}
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return TRUE;
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}
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static GstMemory *
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_gl_mem_copy (GstGLMemoryEGL * src, gssize offset, gssize size)
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{
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GST_CAT_ERROR (GST_CAT_GL_MEMORY, "GstGLMemoryEGL does not support copy");
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return NULL;
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}
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static void
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gst_gl_memory_egl_allocator_class_init (GstGLMemoryEGLAllocatorClass * klass)
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{
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GstGLBaseMemoryAllocatorClass *gl_base;
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GstGLMemoryAllocatorClass *gl_tex;
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GstAllocatorClass *allocator_class;
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gl_tex = (GstGLMemoryAllocatorClass *) klass;
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gl_base = (GstGLBaseMemoryAllocatorClass *) klass;
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allocator_class = (GstAllocatorClass *) klass;
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gl_base->alloc = (GstGLBaseMemoryAllocatorAllocFunction) _gl_mem_egl_alloc;
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gl_base->create = (GstGLBaseMemoryAllocatorCreateFunction) _gl_mem_create;
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gl_base->destroy = (GstGLBaseMemoryAllocatorDestroyFunction) _gl_mem_destroy;
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gl_tex->copy = (GstGLBaseMemoryAllocatorCopyFunction) _gl_mem_copy;
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allocator_class->alloc = _gl_mem_alloc;
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}
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static void
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gst_gl_memory_egl_allocator_init (GstGLMemoryEGLAllocator * allocator)
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{
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GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
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alloc->mem_type = GST_GL_MEMORY_EGL_ALLOCATOR_NAME;
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GST_OBJECT_FLAG_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
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}
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/**
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* gst_gl_memory_egl_init_once:
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*
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* Initializes the GL Memory allocator. It is safe to call this function
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* multiple times. This must be called before any other GstGLMemoryEGL operation.
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*
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* Since: 1.10
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*/
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void
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gst_gl_memory_egl_init_once (void)
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{
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static volatile gsize _init = 0;
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if (g_once_init_enter (&_init)) {
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gst_gl_memory_init_once ();
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GST_DEBUG_CATEGORY_INIT (GST_CAT_GL_MEMORY, "glmemory", 0,
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"OpenGL Texture with EGLImage memory");
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_gl_memory_egl_allocator =
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g_object_new (GST_TYPE_GL_MEMORY_EGL_ALLOCATOR, NULL);
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gst_object_ref_sink (_gl_memory_egl_allocator);
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/* The allocator is never unreffed */
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GST_OBJECT_FLAG_SET (_gl_memory_egl_allocator,
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GST_OBJECT_FLAG_MAY_BE_LEAKED);
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gst_allocator_register (GST_GL_MEMORY_EGL_ALLOCATOR_NAME,
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gst_object_ref (_gl_memory_egl_allocator));
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g_once_init_leave (&_init, 1);
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}
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}
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