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253 lines
8.8 KiB
C
253 lines
8.8 KiB
C
/*
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* GStreamer EGL/GLES Sink
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* Copyright (C) 2012 Collabora Ltd.
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* @author: Reynaldo H. Verdejo Pinochet <reynaldo@collabora.com>
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* @author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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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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#ifndef __GST_EGLGLESSINK_H__
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#define __GST_EGLGLESSINK_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideosink.h>
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#include <gst/base/gstdataqueue.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include "video_platform_wrapper.h"
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G_BEGIN_DECLS
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#define GST_TYPE_EGLGLESSINK \
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(gst_eglglessink_get_type())
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#define GST_EGLGLESSINK(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_EGLGLESSINK,GstEglGlesSink))
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#define GST_EGLGLESSINK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_EGLGLESSINK,GstEglGlesSinkClass))
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#define GST_IS_EGLGLESSINK(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_EGLGLESSINK))
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#define GST_IS_EGLGLESSINK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_EGLGLESSINK))
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#define GST_EGLGLESSINK_IMAGE_NOFMT 0
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#define GST_EGLGLESSINK_IMAGE_RGB888 1
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#define GST_EGLGLESSINK_IMAGE_RGB565 2
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#define GST_EGLGLESSINK_IMAGE_RGBA8888 3
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#define GST_EGLGLESSINK_EGL_MIN_VERSION 1
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typedef struct _GstEglGlesSink GstEglGlesSink;
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typedef struct _GstEglGlesSinkClass GstEglGlesSinkClass;
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typedef struct _GstEglGlesRenderContext GstEglGlesRenderContext;
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typedef struct _GstEglGlesImageFmt GstEglGlesImageFmt;
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typedef struct _coord5
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{
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float x;
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float y;
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float z;
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float a; /* texpos x */
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float b; /* texpos y */
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} coord5;
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/*
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* GstEglGlesRenderContext:
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* @config: Current EGL config
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* @eglcontext: Current EGL context
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* @display: Current EGL display connection
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* @window: Current EGL window asociated with the display connection
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* @used_window: Last seen EGL window asociated with the display connection
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* @surface: EGL surface the sink is rendering into
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* @fragshader: Fragment shader
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* @vertshader: Vertex shader
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* @glslprogram: Compiled and linked GLSL program in use for rendering
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* @texture Texture units in use
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* @surface_width: Pixel width of the surface the sink is rendering into
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* @surface_height: Pixel height of the surface the sink is rendering into
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* @pixel_aspect_ratio: EGL display aspect ratio
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* @egl_minor: EGL version (minor)
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* @egl_major: EGL version (major)
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* @n_textures: Texture units count
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* @position_loc: Index of the position vertex attribute array
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* @texpos_loc: Index of the textpos vertex attribute array
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* @position_array: VBO position array
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* @texpos_array: VBO texpos array
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* @index_array: VBO index array
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* @position_buffer: Position buffer object name
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* @texpos_buffer: Texpos buffer object name
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* @index_buffer: Index buffer object name
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*
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* This struct holds the sink's EGL/GLES rendering context.
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*/
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struct _GstEglGlesRenderContext
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{
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EGLConfig config;
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EGLContext eglcontext;
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EGLDisplay display;
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EGLNativeWindowType window, used_window;
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EGLSurface surface;
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gboolean buffer_preserved;
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GLuint fragshader[2]; /* frame, border */
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GLuint vertshader[2]; /* frame, border */
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GLuint glslprogram[2]; /* frame, border */
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GLuint texture[3]; /* RGB/Y, U/UV, V */
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EGLint surface_width;
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EGLint surface_height;
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EGLint pixel_aspect_ratio;
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EGLint egl_minor, egl_major;
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gint n_textures;
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/* shader vars */
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GLuint position_loc[2]; /* frame, border */
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GLuint texpos_loc[2]; /* frame */
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GLuint tex_scale_loc[1][3]; /* [frame] RGB/Y, U/UV, V */
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GLuint tex_loc[1][3]; /* [frame] RGB/Y, U/UV, V */
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coord5 position_array[12]; /* 4 x Frame, 4 x Border1, 4 x Border2 */
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unsigned short index_array[4];
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unsigned int position_buffer, index_buffer;
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gboolean can_map_eglimage;
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GstMemoryMapFunction eglimage_map;
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GstMemoryUnmapFunction eglimage_unmap;
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PlatformMapVideo eglimage_video_map;
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PlatformUnmapVideo eglimage_video_unmap;
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};
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/*
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* GstEglGlesImageFmt:
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* @fmt: Internal identifier for the EGL attribs / GST caps pairing
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* @attribs: Pointer to the set of EGL attributes asociated with this format
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* @caps: Pointer to the GST caps asociated with this format
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*
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* This struct holds a pairing between GST caps and the matching EGL attributes
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* associated with a given pixel format
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*/
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struct _GstEglGlesImageFmt
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{
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gint fmt; /* Private identifier */
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const EGLint *attribs; /* EGL Attributes */
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GstCaps *caps; /* Matching caps for the attribs */
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};
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/*
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* GstEglGlesSink:
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* @format: Caps' video format field
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* @display_region: Surface region to use as rendering canvas
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* @sinkcaps: Full set of suported caps
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* @current_caps: Current caps
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* @selected_fmt: Pointer to the GST caps/EGL attribs pairing in use
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* @rendering_path: Rendering path (Slow/Fast)
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* @eglglesctx: Pointer to the associated EGL/GLESv2 rendering context
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* @flow_lock: Simple concurrent access ward to the sink's runtime state
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* @supported_fmts: Pointer to the runtime supported format list
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* @have_window: Set if the sink has access to a window to hold it's canvas
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* @using_own_window: Set if the sink created its own window
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* @have_surface: Set if the EGL surface setup has been performed
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* @have_vbo: Set if the GLES VBO setup has been performed
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* @have_texture: Set if the GLES texture setup has been performed
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* @egl_started: Set if the whole EGL setup has been performed
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* @create_window: Property value holder to allow/forbid internal window creation
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* @force_rendering_slow: Property value holder to force slow rendering path
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* @force_aspect_ratio: Property value holder to consider PAR/DAR when scaling
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*
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* The #GstEglGlesSink data structure.
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*/
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struct _GstEglGlesSink
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{
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GstVideoSink videosink; /* Element hook */
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/* Region of the surface that should be rendered */
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GstVideoRectangle render_region;
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gboolean render_region_changed;
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gboolean render_region_user;
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/* Region of render_region that should be filled
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* with the video frames */
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GstVideoRectangle display_region;
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GstVideoRectangle crop;
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gboolean crop_changed;
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GstCaps *sinkcaps;
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GstCaps *current_caps, *configured_caps;
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GstVideoInfo configured_info;
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gfloat stride[3];
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GstBufferPool *pool;
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GstEglGlesImageFmt *selected_fmt;
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GstEglGlesRenderContext eglglesctx;
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GList *supported_fmts;
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/* Runtime flags */
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gboolean have_window;
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gboolean using_own_window;
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gboolean have_surface;;
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gboolean have_vbo;
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gboolean have_texture;
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gboolean egl_started;
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gpointer own_window_data;
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GThread *thread;
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gboolean thread_running;
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GstDataQueue *queue;
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GCond render_cond;
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GMutex render_lock;
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GstFlowReturn last_flow;
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GstMiniObject *dequeued_object;
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GstMemory *last_memory;
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/* Properties */
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gboolean create_window;
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gboolean force_aspect_ratio;
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};
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struct _GstEglGlesSinkClass
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{
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GstVideoSinkClass parent_class;
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};
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GType gst_eglglessink_get_type (void);
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G_END_DECLS
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#endif /* __GST_EGLGLESSINK_H__ */
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