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CoglGst is a GStreamer integration library that facilitates video playback using the Cogl API. It works by retrieving each video frame from the GStreamer pipeline and attaching it to a Cogl pipeline in the form of a Cogl texture along with possible color model conversion shaders. The pipeline is then retrieved by the user during each draw. An example use of the CoglGst API is included in the examples directory. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit dfb94cf4b0b6b42d6465df362a0c0af780596890)
76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/*
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* Cogl-GStreamer.
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*
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* GStreamer integration library for Cogl.
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*
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* cogl-gst-video-sink-private.h - Miscellaneous video sink functions
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*
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* Authored by Jonathan Matthew <jonathan@kaolin.wh9.net>,
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* Chris Lord <chris@openedhand.com>
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* Damien Lespiau <damien.lespiau@intel.com>
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* Matthew Allum <mallum@openedhand.com>
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* Plamena Manolova <plamena.n.manolova@intel.com>
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*
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* Copyright (C) 2007, 2008 OpenedHand
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* Copyright (C) 2009, 2010, 2013 Intel Corporation
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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 "cogl-gst-shader-private.h"
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const char
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_cogl_gst_shader_rgba_to_rgba_decl[] =
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"vec4 cogl_gst_sample_video (vec2 UV) {\n"
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" return texture2D (cogl_sampler0, UV);\n"
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"}";
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const char
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_cogl_gst_shader_yv12_to_rgba_decl[] =
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"vec4 cogl_gst_sample_video (vec2 UV) {\n"
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" float y = 1.1640625 * (texture2D (cogl_sampler0, UV).g - 0.0625);\n"
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" float u = texture2D (cogl_sampler1, UV).g - 0.5;\n"
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" float v = texture2D (cogl_sampler2, UV).g - 0.5;\n"
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" vec4 color;\n"
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" color.r = y + 1.59765625 * v;\n"
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" color.g = y - 0.390625 * u - 0.8125 * v;\n"
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" color.b = y + 2.015625 * u;\n"
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" color.a = 1.0;\n"
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" return color;\n"
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"}";
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const char
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_cogl_gst_shader_ayuv_to_rgba_decl[] =
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"vec4 cogl_gst_sample_video (vec2 UV) {\n"
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" vec4 color = texture2D (cogl_sampler0, UV);\n"
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" float y = 1.1640625 * (color.g - 0.0625);\n"
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" float u = color.b - 0.5;\n"
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" float v = color.a - 0.5;\n"
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" color.a = color.r;\n"
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" color.r = y + 1.59765625 * v;\n"
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" color.g = y - 0.390625 * u - 0.8125 * v;\n"
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" color.b = y + 2.015625 * u;\n"
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" return color;\n"
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"}";
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const char
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_cogl_gst_shader_default_sample[] =
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"cogl_layer = cogl_gst_sample_video (cogl_tex_coord0_in.st);";
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