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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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833 lines
23 KiB
C
833 lines
23 KiB
C
/*
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* GStreamer
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* Copyright (C) 2013 Matthew Waters <ystreet00@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 <stdio.h>
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#include <gst/gst.h>
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#include "gl.h"
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#include "gstglutils.h"
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#if GST_GL_HAVE_WINDOW_X11
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#include <gst/gl/x11/gstgldisplay_x11.h>
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#endif
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#ifndef GL_FRAMEBUFFER_UNDEFINED
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#define GL_FRAMEBUFFER_UNDEFINED 0x8219
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#endif
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#ifndef GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
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#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
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#endif
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#ifndef GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
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#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
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#endif
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#ifndef GL_FRAMEBUFFER_UNSUPPORTED
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#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
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#endif
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#ifndef GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS
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#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
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#endif
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#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
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#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
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#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
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#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
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#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
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static gchar *error_message;
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/* called in the gl thread */
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gboolean
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gst_gl_context_check_framebuffer_status (GstGLContext * context)
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{
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GLenum status = 0;
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status = context->gl_vtable->CheckFramebufferStatus (GL_FRAMEBUFFER);
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switch (status) {
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case GL_FRAMEBUFFER_COMPLETE:
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return TRUE;
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break;
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case GL_FRAMEBUFFER_UNSUPPORTED:
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GST_ERROR ("GL_FRAMEBUFFER_UNSUPPORTED");
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
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GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
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GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT");
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
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GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS");
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break;
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#if GST_GL_HAVE_OPENGL
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case GL_FRAMEBUFFER_UNDEFINED:
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GST_ERROR ("GL_FRAMEBUFFER_UNDEFINED");
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break;
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#endif
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default:
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GST_ERROR ("General FBO error");
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}
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return FALSE;
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}
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typedef struct _GenTexture
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{
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guint width, height;
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GstVideoFormat format;
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guint result;
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} GenTexture;
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static void
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_gen_texture (GstGLContext * context, GenTexture * data)
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{
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const GstGLFuncs *gl = context->gl_vtable;
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GST_TRACE ("Generating texture format:%u dimensions:%ux%u", data->format,
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data->width, data->height);
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gl->GenTextures (1, &data->result);
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gl->BindTexture (GL_TEXTURE_2D, data->result);
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if (data->width > 0 && data->height > 0)
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gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, data->width,
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data->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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GST_LOG ("generated texture id:%d", data->result);
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}
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void
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gst_gl_context_gen_texture (GstGLContext * context, GLuint * pTexture,
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GstVideoFormat v_format, GLint width, GLint height)
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{
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GenTexture data = { width, height, v_format, 0 };
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _gen_texture,
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&data);
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*pTexture = data.result;
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}
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static void
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_del_texture (GstGLContext * context, guint * texture)
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{
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context->gl_vtable->DeleteTextures (1, texture);
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}
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void
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gst_gl_context_del_texture (GstGLContext * context, GLuint * pTexture)
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{
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _del_texture,
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pTexture);
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}
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typedef struct _GenTextureFull
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{
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const GstVideoInfo *info;
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const gint comp;
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guint result;
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} GenTextureFull;
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static void
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_gen_texture_full (GstGLContext * context, GenTextureFull * data)
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{
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const GstGLFuncs *gl = context->gl_vtable;
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GLint glinternalformat = 0;
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GLenum glformat = 0;
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GLenum gltype = 0;
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gl->GenTextures (1, &data->result);
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gl->BindTexture (GL_TEXTURE_2D, data->result);
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switch (GST_VIDEO_INFO_FORMAT (data->info)) {
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case GST_VIDEO_FORMAT_RGB:
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case GST_VIDEO_FORMAT_BGR:
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{
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glinternalformat = GL_RGB8;
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glformat = GL_RGB;
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gltype = GL_UNSIGNED_BYTE;
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break;
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}
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case GST_VIDEO_FORMAT_RGB16:
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{
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glinternalformat = GL_RGB16;
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glformat = GL_RGB;
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gltype = GL_UNSIGNED_SHORT_5_6_5;
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break;
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}
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case GST_VIDEO_FORMAT_RGBA:
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case GST_VIDEO_FORMAT_BGRA:
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case GST_VIDEO_FORMAT_ARGB:
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case GST_VIDEO_FORMAT_ABGR:
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case GST_VIDEO_FORMAT_RGBx:
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case GST_VIDEO_FORMAT_BGRx:
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case GST_VIDEO_FORMAT_xRGB:
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case GST_VIDEO_FORMAT_xBGR:
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case GST_VIDEO_FORMAT_AYUV:
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{
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glinternalformat = GL_RGBA8;
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glformat = GL_RGBA;
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gltype = GL_UNSIGNED_BYTE;
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break;
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}
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case GST_VIDEO_FORMAT_NV12:
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case GST_VIDEO_FORMAT_NV21:
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{
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glinternalformat = GL_LUMINANCE;
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glformat = data->comp == 0 ? GL_LUMINANCE : GL_LUMINANCE_ALPHA;
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gltype = GL_UNSIGNED_BYTE;
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break;
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}
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case GST_VIDEO_FORMAT_I420:
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case GST_VIDEO_FORMAT_YV12:
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case GST_VIDEO_FORMAT_Y444:
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case GST_VIDEO_FORMAT_Y42B:
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case GST_VIDEO_FORMAT_Y41B:
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{
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glformat = GL_LUMINANCE;
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gltype = GL_UNSIGNED_BYTE;
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break;
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}
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default:
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GST_WARNING ("unsupported %s",
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gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (data->info)));
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break;
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}
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gl->TexImage2D (GL_TEXTURE_2D, 0, glinternalformat,
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GST_VIDEO_INFO_COMP_WIDTH (data->info, data->comp),
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GST_VIDEO_INFO_COMP_HEIGHT (data->info, data->comp), 0, glformat, gltype,
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NULL);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
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void
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gst_gl_generate_texture_full (GstGLContext * context, const GstVideoInfo * info,
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const guint comp, gint stride[], gsize offset[], gsize size[],
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GLuint * pTexture)
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{
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GenTextureFull data = { info, comp, 0 };
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switch (GST_VIDEO_INFO_FORMAT (info)) {
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case GST_VIDEO_FORMAT_RGB:
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case GST_VIDEO_FORMAT_BGR:
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{
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stride[0] = GST_ROUND_UP_4 (GST_VIDEO_INFO_WIDTH (info) * 3);
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offset[0] = 0;
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size[0] = stride[0] * GST_VIDEO_INFO_HEIGHT (info);
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break;
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}
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case GST_VIDEO_FORMAT_RGB16:
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{
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stride[0] = GST_ROUND_UP_4 (GST_VIDEO_INFO_WIDTH (info) * 2);
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offset[0] = 0;
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size[0] = stride[0] * GST_VIDEO_INFO_HEIGHT (info);
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break;
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}
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case GST_VIDEO_FORMAT_RGBA:
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case GST_VIDEO_FORMAT_BGRA:
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case GST_VIDEO_FORMAT_ARGB:
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case GST_VIDEO_FORMAT_ABGR:
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case GST_VIDEO_FORMAT_RGBx:
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case GST_VIDEO_FORMAT_BGRx:
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case GST_VIDEO_FORMAT_xRGB:
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case GST_VIDEO_FORMAT_xBGR:
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case GST_VIDEO_FORMAT_AYUV:
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{
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stride[0] = GST_ROUND_UP_4 (GST_VIDEO_INFO_WIDTH (info) * 4);
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offset[0] = 0;
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size[0] = stride[0] * GST_VIDEO_INFO_HEIGHT (info);
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break;
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}
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case GST_VIDEO_FORMAT_NV12:
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case GST_VIDEO_FORMAT_NV21:
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{
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size[comp] = stride[comp] * GST_VIDEO_INFO_COMP_HEIGHT (info, comp);
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if (comp == 0) {
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stride[0] = GST_ROUND_UP_4 (GST_VIDEO_INFO_COMP_WIDTH (info, 1));
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offset[0] = 0;
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} else {
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stride[1] = GST_ROUND_UP_4 (GST_VIDEO_INFO_COMP_WIDTH (info, 1) * 2);
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offset[1] = size[0];
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}
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break;
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}
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case GST_VIDEO_FORMAT_I420:
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case GST_VIDEO_FORMAT_YV12:
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case GST_VIDEO_FORMAT_Y444:
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case GST_VIDEO_FORMAT_Y42B:
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case GST_VIDEO_FORMAT_Y41B:
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{
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stride[comp] = GST_ROUND_UP_4 (GST_VIDEO_INFO_COMP_WIDTH (info, comp));;
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size[comp] = stride[comp] * GST_VIDEO_INFO_COMP_HEIGHT (info, comp);
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if (comp == 0)
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offset[0] = 0;
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else if (comp == 1)
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offset[1] = size[0];
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else
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offset[2] = offset[1] + size[1];
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break;
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}
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default:
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GST_WARNING ("unsupported %s",
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gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
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break;
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}
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gst_gl_context_thread_add (context,
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(GstGLContextThreadFunc) _gen_texture_full, &data);
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*pTexture = data.result;
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}
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typedef struct _GenFBO
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{
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GstGLFramebuffer *frame;
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gint width, height;
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GLuint *fbo, *depth;
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} GenFBO;
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static void
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_gen_fbo (GstGLContext * context, GenFBO * data)
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{
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gst_gl_framebuffer_generate (data->frame, data->width, data->height,
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data->fbo, data->depth);
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}
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gboolean
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gst_gl_context_gen_fbo (GstGLContext * context, gint width, gint height,
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GLuint * fbo, GLuint * depthbuffer)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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GenFBO data = { frame, width, height, fbo, depthbuffer };
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _gen_fbo, &data);
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gst_object_unref (frame);
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return TRUE;
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}
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typedef struct _UseFBO
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{
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GstGLFramebuffer *frame;
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gint texture_fbo_width;
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gint texture_fbo_height;
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GLuint fbo;
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GLuint depth_buffer;
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GLuint texture_fbo;
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GLCB cb;
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gint input_tex_width;
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gint input_tex_height;
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GLuint input_tex;
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gdouble proj_param1;
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gdouble proj_param2;
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gdouble proj_param3;
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gdouble proj_param4;
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GstGLDisplayProjection projection;
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gpointer stuff;
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} UseFBO;
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static void
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_use_fbo (GstGLContext * context, UseFBO * data)
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{
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gst_gl_framebuffer_use (data->frame, data->texture_fbo_width,
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data->texture_fbo_height, data->fbo, data->depth_buffer,
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data->texture_fbo, data->cb, data->input_tex_width,
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data->input_tex_height, data->input_tex, data->proj_param1,
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data->proj_param2, data->proj_param3, data->proj_param4, data->projection,
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data->stuff);
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}
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/* Called by glfilter */
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/* this function really has to be simplified... do we really need to
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set projection this way? Wouldn't be better a set_projection
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separate call? or just make glut functions available out of
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gst-libs and call it if needed on drawcallback? -- Filippo */
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/* GLCB too.. I think that only needed parameters should be
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* GstGLDisplay *display and gpointer data, or just gpointer data */
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/* ..everything here has to be simplified! */
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gboolean
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gst_gl_context_use_fbo (GstGLContext * context, gint texture_fbo_width,
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gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
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GLuint texture_fbo, GLCB cb, gint input_tex_width,
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gint input_tex_height, GLuint input_tex, gdouble proj_param1,
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gdouble proj_param2, gdouble proj_param3, gdouble proj_param4,
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GstGLDisplayProjection projection, gpointer stuff)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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UseFBO data =
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{ frame, texture_fbo_width, texture_fbo_height, fbo, depth_buffer,
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texture_fbo, cb, input_tex_width, input_tex_height, input_tex,
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proj_param1, proj_param2, proj_param3, proj_param4, projection, stuff
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};
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _use_fbo, &data);
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gst_object_unref (frame);
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return TRUE;
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}
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typedef struct _UseFBO2
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{
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GstGLFramebuffer *frame;
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gint texture_fbo_width;
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gint texture_fbo_height;
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GLuint fbo;
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GLuint depth_buffer;
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GLuint texture_fbo;
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GLCB_V2 cb;
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gpointer stuff;
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} UseFBO2;
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static void
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_use_fbo_v2 (GstGLContext * context, UseFBO2 * data)
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{
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gst_gl_framebuffer_use_v2 (data->frame, data->texture_fbo_width,
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data->texture_fbo_height, data->fbo, data->depth_buffer,
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data->texture_fbo, data->cb, data->stuff);
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}
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gboolean
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gst_gl_context_use_fbo_v2 (GstGLContext * context, gint texture_fbo_width,
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gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
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GLuint texture_fbo, GLCB_V2 cb, gpointer stuff)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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UseFBO2 data =
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{ frame, texture_fbo_width, texture_fbo_height, fbo, depth_buffer,
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texture_fbo, cb, stuff
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};
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _use_fbo_v2,
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&data);
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gst_object_unref (frame);
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return TRUE;
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}
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typedef struct _DelFBO
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{
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GstGLFramebuffer *frame;
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GLuint fbo;
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GLuint depth;
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} DelFBO;
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/* Called in the gl thread */
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static void
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_del_fbo (GstGLContext * context, DelFBO * data)
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{
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gst_gl_framebuffer_delete (data->frame, data->fbo, data->depth);
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}
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/* Called by gltestsrc and glfilter */
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void
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gst_gl_context_del_fbo (GstGLContext * context, GLuint fbo, GLuint depth_buffer)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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DelFBO data = { frame, fbo, depth_buffer };
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _del_fbo, &data);
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gst_object_unref (frame);
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}
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static void
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_compile_shader (GstGLContext * context, GstGLShader ** shader)
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{
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GError *error = NULL;
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gst_gl_shader_compile (*shader, &error);
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if (error) {
|
|
gst_gl_context_set_error (context, "%s", error->message);
|
|
g_error_free (error);
|
|
error = NULL;
|
|
gst_gl_context_clear_shader (context);
|
|
gst_object_unref (*shader);
|
|
*shader = NULL;
|
|
}
|
|
}
|
|
|
|
/* Called by glfilter */
|
|
gboolean
|
|
gst_gl_context_gen_shader (GstGLContext * context, const gchar * vert_src,
|
|
const gchar * frag_src, GstGLShader ** shader)
|
|
{
|
|
g_return_val_if_fail (frag_src != NULL || vert_src != NULL, FALSE);
|
|
g_return_val_if_fail (shader != NULL, FALSE);
|
|
|
|
*shader = gst_gl_shader_new (context);
|
|
|
|
if (frag_src)
|
|
gst_gl_shader_set_fragment_source (*shader, frag_src);
|
|
if (vert_src)
|
|
gst_gl_shader_set_vertex_source (*shader, vert_src);
|
|
|
|
gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _compile_shader,
|
|
shader);
|
|
|
|
return *shader != NULL;
|
|
}
|
|
|
|
void
|
|
gst_gl_context_set_error (GstGLContext * context, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
|
|
if (error_message)
|
|
g_free (error_message);
|
|
|
|
va_start (args, format);
|
|
error_message = g_strdup_vprintf (format, args);
|
|
va_end (args);
|
|
|
|
GST_WARNING ("%s", error_message);
|
|
}
|
|
|
|
gchar *
|
|
gst_gl_context_get_error (void)
|
|
{
|
|
return error_message;
|
|
}
|
|
|
|
/* Called by glfilter */
|
|
void
|
|
gst_gl_context_del_shader (GstGLContext * context, GstGLShader * shader)
|
|
{
|
|
gst_object_unref (shader);
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_display_found (GstElement * element, GstGLDisplay * display)
|
|
{
|
|
if (display) {
|
|
GST_LOG_OBJECT (element, "already have a display (%p)", display);
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (GST_CAT_CONTEXT);
|
|
|
|
static gboolean
|
|
context_pad_query (const GValue * item, GValue * value, gpointer user_data)
|
|
{
|
|
GstPad *pad = g_value_get_object (item);
|
|
GstQuery *query = user_data;
|
|
gboolean res;
|
|
|
|
res = gst_pad_peer_query (pad, query);
|
|
|
|
if (res) {
|
|
g_value_set_boolean (value, TRUE);
|
|
return FALSE;
|
|
}
|
|
|
|
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, pad, "context pad peer query failed");
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
run_context_query (GstElement * element, GstQuery * query,
|
|
GstPadDirection direction)
|
|
{
|
|
GstIterator *it;
|
|
GstIteratorFoldFunction func = context_pad_query;
|
|
GValue res = { 0 };
|
|
|
|
g_value_init (&res, G_TYPE_BOOLEAN);
|
|
g_value_set_boolean (&res, FALSE);
|
|
|
|
/* Ask neighbor */
|
|
if (direction == GST_PAD_SRC)
|
|
it = gst_element_iterate_src_pads (element);
|
|
else
|
|
it = gst_element_iterate_sink_pads (element);
|
|
|
|
while (gst_iterator_fold (it, func, &res, query) == GST_ITERATOR_RESYNC)
|
|
gst_iterator_resync (it);
|
|
|
|
gst_iterator_free (it);
|
|
|
|
return g_value_get_boolean (&res);
|
|
}
|
|
|
|
static GstQuery *
|
|
_gst_gl_display_context_query (GstElement * element,
|
|
GstGLDisplay ** display_ptr, const gchar * display_type)
|
|
{
|
|
GstQuery *query;
|
|
GstContext *ctxt;
|
|
|
|
/* 2a) Query downstream with GST_QUERY_CONTEXT for the context and
|
|
* check if downstream already has a context of the specific type
|
|
* 2b) Query upstream as above.
|
|
*/
|
|
query = gst_query_new_context (display_type);
|
|
if (run_context_query (element, query, GST_PAD_SRC)) {
|
|
gst_query_parse_context (query, &ctxt);
|
|
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
|
|
"found context (%p) in downstream query", ctxt);
|
|
} else if (run_context_query (element, query, GST_PAD_SINK)) {
|
|
gst_query_parse_context (query, &ctxt);
|
|
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
|
|
"found context (%p) in upstream query", ctxt);
|
|
} else {
|
|
/* 3) Post a GST_MESSAGE_NEED_CONTEXT message on the bus with
|
|
* the required context type and afterwards check if a
|
|
* usable context was set now as in 1). The message could
|
|
* be handled by the parent bins of the element and the
|
|
* application.
|
|
*/
|
|
GstMessage *msg;
|
|
|
|
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
|
|
"posting need context message");
|
|
msg = gst_message_new_need_context (GST_OBJECT_CAST (element),
|
|
GST_GL_DISPLAY_CONTEXT_TYPE);
|
|
gst_element_post_message (element, msg);
|
|
}
|
|
|
|
/*
|
|
* Whomever responds to the need-context message performs a
|
|
* GstElement::set_context() with the required context in which the element
|
|
* is required to update the display_ptr or call gst_gl_handle_set_context().
|
|
*/
|
|
|
|
return query;
|
|
}
|
|
|
|
static void
|
|
gst_gl_display_context_prepare (GstElement * element,
|
|
GstGLDisplay ** display_ptr)
|
|
{
|
|
GstContext *ctxt;
|
|
GstQuery *query;
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
if (!GST_CAT_CONTEXT)
|
|
GST_DEBUG_CATEGORY_GET (GST_CAT_CONTEXT, "GST_CONTEXT");
|
|
#endif
|
|
|
|
query =
|
|
_gst_gl_display_context_query (element, display_ptr,
|
|
GST_GL_DISPLAY_CONTEXT_TYPE);
|
|
gst_query_parse_context (query, &ctxt);
|
|
if (ctxt && gst_context_has_context_type (ctxt, GST_GL_DISPLAY_CONTEXT_TYPE)) {
|
|
gst_context_get_gl_display (ctxt, display_ptr);
|
|
if (*display_ptr)
|
|
goto out;
|
|
}
|
|
#if GST_GL_HAVE_WINDOW_X11
|
|
gst_query_unref (query);
|
|
query =
|
|
_gst_gl_display_context_query (element, display_ptr,
|
|
"gst.x11.display.handle");
|
|
gst_query_parse_context (query, &ctxt);
|
|
if (ctxt && gst_context_has_context_type (ctxt, "gst.x11.display.handle")) {
|
|
const GstStructure *s;
|
|
Display *display;
|
|
|
|
s = gst_context_get_structure (ctxt);
|
|
if (gst_structure_get (s, "display", G_TYPE_POINTER, &display, NULL)
|
|
&& display) {
|
|
*display_ptr =
|
|
(GstGLDisplay *) gst_gl_display_x11_new_with_display (display);
|
|
goto out;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
out:
|
|
gst_query_unref (query);
|
|
}
|
|
|
|
/* 4) Create a context by itself and post a GST_MESSAGE_HAVE_CONTEXT
|
|
* message.
|
|
*/
|
|
static void
|
|
gst_gl_display_context_propagate (GstElement * element, GstGLDisplay * display)
|
|
{
|
|
GstContext *context;
|
|
GstMessage *msg;
|
|
|
|
if (!display) {
|
|
GST_ERROR_OBJECT (element, "Could not get GL display connection");
|
|
return;
|
|
}
|
|
|
|
context = gst_context_new (GST_GL_DISPLAY_CONTEXT_TYPE, TRUE);
|
|
gst_context_set_gl_display (context, display);
|
|
|
|
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
|
|
"posting have context (%p) message with display (%p)", context, display);
|
|
msg = gst_message_new_have_context (GST_OBJECT_CAST (element), context);
|
|
gst_element_post_message (GST_ELEMENT_CAST (element), msg);
|
|
}
|
|
|
|
gboolean
|
|
gst_gl_ensure_display (gpointer element, GstGLDisplay ** display_ptr)
|
|
{
|
|
GstGLDisplay *display;
|
|
|
|
g_return_val_if_fail (element != NULL, FALSE);
|
|
g_return_val_if_fail (display_ptr != NULL, FALSE);
|
|
|
|
/* 1) Check if the element already has a context of the specific
|
|
* type.
|
|
*/
|
|
display = *display_ptr;
|
|
if (gst_gl_display_found (element, display))
|
|
return TRUE;
|
|
|
|
gst_gl_display_context_prepare (element, display_ptr);
|
|
|
|
/* Neighbour found and it updated the display */
|
|
if (gst_gl_display_found (element, *display_ptr))
|
|
return TRUE;
|
|
|
|
/* If no neighboor, or application not interested, use system default */
|
|
display = gst_gl_display_new ();
|
|
|
|
*display_ptr = display;
|
|
|
|
gst_gl_display_context_propagate (element, display);
|
|
|
|
return display != NULL;
|
|
}
|
|
|
|
gboolean
|
|
gst_gl_handle_set_context (GstElement * element, GstContext * context,
|
|
GstGLDisplay ** display)
|
|
{
|
|
GstGLDisplay *replacement = NULL;
|
|
const gchar *context_type;
|
|
|
|
g_return_val_if_fail (display, FALSE);
|
|
|
|
if (!context)
|
|
return FALSE;
|
|
|
|
context_type = gst_context_get_context_type (context);
|
|
|
|
if (g_strcmp0 (context_type, GST_GL_DISPLAY_CONTEXT_TYPE) == 0) {
|
|
if (!gst_context_get_gl_display (context, &replacement)) {
|
|
GST_WARNING_OBJECT (element, "Failed to get display from context");
|
|
return FALSE;
|
|
}
|
|
}
|
|
#if GST_GL_HAVE_WINDOW_X11
|
|
else if (g_strcmp0 (context_type, "gst.x11.display.handle") == 0) {
|
|
const GstStructure *s;
|
|
Display *display;
|
|
|
|
s = gst_context_get_structure (context);
|
|
if (gst_structure_get (s, "display", G_TYPE_POINTER, &display, NULL))
|
|
replacement =
|
|
(GstGLDisplay *) gst_gl_display_x11_new_with_display (display);
|
|
}
|
|
#endif
|
|
|
|
if (replacement)
|
|
gst_object_replace ((GstObject **) display, (GstObject *) replacement);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gst_gl_handle_context_query (GstElement * element, GstQuery * query,
|
|
GstGLDisplay ** display)
|
|
{
|
|
gboolean res = FALSE;
|
|
const gchar *context_type;
|
|
GstContext *context, *old_context;
|
|
|
|
g_return_val_if_fail (element != NULL, FALSE);
|
|
g_return_val_if_fail (query != NULL, FALSE);
|
|
g_return_val_if_fail (display != NULL, FALSE);
|
|
|
|
gst_query_parse_context_type (query, &context_type);
|
|
|
|
if (g_strcmp0 (context_type, GST_GL_DISPLAY_CONTEXT_TYPE) == 0) {
|
|
|
|
gst_query_parse_context (query, &old_context);
|
|
|
|
if (old_context)
|
|
context = gst_context_copy (old_context);
|
|
else
|
|
context = gst_context_new (GST_GL_DISPLAY_CONTEXT_TYPE, TRUE);
|
|
|
|
gst_context_set_gl_display (context, *display);
|
|
gst_query_set_context (query, context);
|
|
gst_context_unref (context);
|
|
|
|
res = *display != NULL;
|
|
}
|
|
#if GST_GL_HAVE_WINDOW_X11
|
|
else if (g_strcmp0 (context_type, "gst.x11.display.handle") == 0) {
|
|
GstStructure *s;
|
|
Display *x11_display = NULL;
|
|
|
|
gst_query_parse_context (query, &old_context);
|
|
|
|
if (old_context)
|
|
context = gst_context_copy (old_context);
|
|
else
|
|
context = gst_context_new ("gst.x11.display.handle", TRUE);
|
|
|
|
if (*display
|
|
&& ((*display)->type & GST_GL_DISPLAY_TYPE_X11) ==
|
|
GST_GL_DISPLAY_TYPE_X11)
|
|
x11_display = (Display *) gst_gl_display_get_handle (*display);
|
|
|
|
s = gst_context_writable_structure (context);
|
|
gst_structure_set (s, "display", G_TYPE_POINTER, x11_display, NULL);
|
|
|
|
gst_query_set_context (query, context);
|
|
gst_context_unref (context);
|
|
|
|
res = x11_display != NULL;
|
|
}
|
|
#endif
|
|
|
|
return res;
|
|
}
|