mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
1387 lines
43 KiB
C
1387 lines
43 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012-2014 Matthew Waters <ystree00@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 "gl.h"
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#include "gstglcolorconvert.h"
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/**
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* SECTION:gstglcolorconvert
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* @short_description: an object that converts between color spaces/formats
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* @see_also: #GstGLUpload, #GstGLDownload, #GstGLMemory
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*
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* #GstGLColorConvert is an object that converts between color spaces and/or
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* formats using OpenGL Shaders.
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*
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* A #GstGLColorConvert can be created with gst_gl_color_convert_new().
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*
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* For handling stride scaling in the shader, see
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* gst_gl_color_convert_set_texture_scaling().
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*/
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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 void _do_convert (GstGLContext * context, GstGLColorConvert * convert);
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static gboolean _init_convert (GstGLColorConvert * convert);
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static gboolean _init_convert_fbo (GstGLColorConvert * convert);
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static GstBuffer *_gst_gl_color_convert_perform_unlocked (GstGLColorConvert *
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convert, GstBuffer * inbuf);
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static gboolean _do_convert_draw (GstGLContext * context,
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GstGLColorConvert * convert);
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/* *INDENT-OFF* */
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#define YUV_TO_RGB_COEFFICIENTS \
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"uniform vec3 offset;\n" \
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"uniform vec3 coeff1;\n" \
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"uniform vec3 coeff2;\n" \
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"uniform vec3 coeff3;\n"
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/* FIXME: use the colormatrix support from videoconvert */
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/* BT. 601 standard with the following ranges:
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* Y = [16..235] (of 255)
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* Cb/Cr = [16..240] (of 255)
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*/
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static const gfloat from_yuv_bt601_offset[] = {-0.0625, -0.5, -0.5};
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static const gfloat from_yuv_bt601_rcoeff[] = {1.164, 0.000, 1.596};
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static const gfloat from_yuv_bt601_gcoeff[] = {1.164,-0.391,-0.813};
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static const gfloat from_yuv_bt601_bcoeff[] = {1.164, 2.018, 0.000};
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/* BT. 709 standard with the following ranges:
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* Y = [16..235] (of 255)
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* Cb/Cr = [16..240] (of 255)
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*/
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static const gfloat from_yuv_bt709_offset[] = {-0.0625, -0.5, -0.5};
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static const gfloat from_yuv_bt709_rcoeff[] = {1.164, 0.000, 1.787};
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static const gfloat from_yuv_bt709_gcoeff[] = {1.164,-0.213,-0.531};
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static const gfloat from_yuv_bt709_bcoeff[] = {1.164,2.112, 0.000};
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#define RGB_TO_YUV_COEFFICIENTS \
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"uniform vec3 offset;\n" \
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"uniform vec3 coeff1;\n" \
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"uniform vec3 coeff2;\n" \
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"uniform vec3 coeff3;\n"
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/* Matrix inverses of the color matrices found above */
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/* BT. 601 standard with the following ranges:
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* Y = [16..235] (of 255)
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* Cb/Cr = [16..240] (of 255)
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*/
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static const gfloat from_rgb_bt601_offset[] = {0.0625, 0.5, 0.5};
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static const gfloat from_rgb_bt601_ycoeff[] = {0.256816, 0.504154, 0.0979137};
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static const gfloat from_rgb_bt601_ucoeff[] = {-0.148246, -0.29102, 0.439266};
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static const gfloat from_rgb_bt601_vcoeff[] = {0.439271, -0.367833, -0.071438};
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/* BT. 709 standard with the following ranges:
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* Y = [16..235] (of 255)
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* Cb/Cr = [16..240] (of 255)
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*/
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static const gfloat from_rgb_bt709_offset[] = {0.0625, 0.5, 0.5};
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static const gfloat from_rgb_bt709_ycoeff[] = { 0.182604, 0.614526, 0.061976 };
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static const gfloat from_rgb_bt709_ucoeff[] = { -0.100640, -0.338688, 0.439327 };
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static const gfloat from_rgb_bt709_vcoeff[] = { 0.440654, -0.400285, -0.040370 };
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/** GRAY16 to RGB conversion
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* data transfered as GL_LUMINANCE_ALPHA then convert back to GRAY16
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* high byte weight as : 255*256/65535
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* ([0~1] denormalize to [0~255],shift to high byte,normalize to [0~1])
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* low byte weight as : 255/65535 (similar)
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* */
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#define COMPOSE_WEIGHT \
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"const vec2 compose_weight = vec2(0.996109, 0.003891);\n"
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/* Channel reordering for XYZ <-> ZYX conversion */
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static const gchar frag_REORDER[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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"uniform vec2 tex_scale0;\n"
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"uniform vec2 tex_scale1;\n"
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"uniform vec2 tex_scale2;\n"
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"void main(void)\n"
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"{\n"
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" vec4 t = texture2D(tex, v_texcoord * tex_scale0);\n"
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" %s\n" /* clobber alpha channel? */
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" gl_FragColor = vec4(t.%c, t.%c, t.%c, t.%c);\n"
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"}";
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/** GRAY16 to RGB conversion
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* data transfered as GL_LUMINANCE_ALPHA then convert back to GRAY16
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* high byte weight as : 255*256/65535
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* ([0~1] denormalize to [0~255],shift to high byte,normalize to [0~1])
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* low byte weight as : 255/65535 (similar)
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* */
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static const gchar frag_COMPOSE[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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"uniform vec2 tex_scale0;\n"
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"uniform vec2 tex_scale1;\n"
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"uniform vec2 tex_scale2;\n"
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COMPOSE_WEIGHT
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"void main(void)\n"
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"{\n"
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" float r, g, b, a;\n"
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" vec4 t = texture2D(tex, v_texcoord * tex_scale0);\n"
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" r = dot(t.%c%c, compose_weight);"
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" g = r;\n"
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" b = r;\n"
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" a = 1.0;\n"
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" gl_FragColor = vec4(%c, %c, %c, %c);\n"
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"}";
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static const char frag_AYUV_to_RGB[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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"uniform vec2 tex_scale0;\n"
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"uniform vec2 tex_scale1;\n"
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"uniform vec2 tex_scale2;\n"
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YUV_TO_RGB_COEFFICIENTS
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"void main(void) {\n"
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" float r,g,b,a;\n"
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" vec4 texel;\n"
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" texel = texture2D(tex, v_texcoord * tex_scale0);\n"
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" texel.gba += offset;\n"
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" r = dot(texel.gba, coeff1);\n"
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" g = dot(texel.gba, coeff2);\n"
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" b = dot(texel.gba, coeff3);\n"
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" a = texel.r;\n"
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" gl_FragColor=vec4(%c,%c,%c,%c);\n"
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"}";
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static const gchar frag_RGB_to_AYUV[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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RGB_TO_YUV_COEFFICIENTS
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"void main(void) {\n"
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" vec4 texel;\n"
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" float y, u, v, a;\n"
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" texel = texture2D(tex, v_texcoord).%c%c%c%c;\n"
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" y = dot(texel.rgb, coeff1);\n"
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" u = dot(texel.rgb, coeff2);\n"
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" v = dot(texel.rgb, coeff3);\n"
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" y += offset.x;\n"
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" u += offset.y;\n"
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" v += offset.z;\n"
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" a = %s;\n"
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" gl_FragColor = vec4(a,y,u,v);\n"
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"}\n";
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/** YUV to RGB conversion */
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static const char frag_PLANAR_YUV_to_RGB[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D Ytex, Utex, Vtex;\n"
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"uniform vec2 tex_scale0;\n"
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"uniform vec2 tex_scale1;\n"
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"uniform vec2 tex_scale2;\n"
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YUV_TO_RGB_COEFFICIENTS
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"void main(void) {\n"
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" float r, g, b, a;\n"
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" vec3 yuv;\n"
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" yuv.x = texture2D(Ytex,v_texcoord * tex_scale0).r;\n"
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" yuv.y = texture2D(Utex,v_texcoord * tex_scale1).r;\n"
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" yuv.z = texture2D(Vtex,v_texcoord * tex_scale2).r;\n"
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" yuv += offset;\n"
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" r = dot(yuv, coeff1);\n"
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" g = dot(yuv, coeff2);\n"
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" b = dot(yuv, coeff3);\n"
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" a = 1.0;\n"
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" gl_FragColor = vec4(%c, %c, %c, %c);\n"
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"}\n";
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static const gchar frag_RGB_to_PLANAR_YUV[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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"uniform float w, h;\n"
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RGB_TO_YUV_COEFFICIENTS
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"void main(void) {\n"
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" float y, u, v;\n"
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" vec4 texel = texture2D(tex, v_texcoord).%c%c%c%c;\n"
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" vec4 texel2 = texture2D(tex, v_texcoord * 2.0).%c%c%c%c;\n"
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" y = dot(texel.rgb, coeff1);\n"
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" u = dot(texel2.rgb, coeff2);\n"
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" v = dot(texel2.rgb, coeff3);\n"
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" y += offset.x;\n"
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" u += offset.y;\n"
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" v += offset.z;\n"
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" gl_FragData[0] = vec4(y, 0.0, 0.0, 1.0);\n"
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" gl_FragData[1] = vec4(u, 0.0, 0.0, 1.0);\n"
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" gl_FragData[2] = vec4(v, 0.0, 0.0, 1.0);\n"
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"}\n";
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/** NV12/NV21 to RGB conversion */
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static const char frag_NV12_NV21_to_RGB[] = {
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D Ytex,UVtex;\n"
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"uniform vec2 tex_scale0;\n"
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"uniform vec2 tex_scale1;\n"
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"uniform vec2 tex_scale2;\n"
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YUV_TO_RGB_COEFFICIENTS
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"void main(void) {\n"
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" float r, g, b, a;\n"
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" vec3 yuv;\n"
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" yuv.x=texture2D(Ytex, v_texcoord * tex_scale0).r;\n"
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" yuv.yz=texture2D(UVtex, v_texcoord * tex_scale1).%c%c;\n"
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" yuv += offset;\n"
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" r = dot(yuv, coeff1);\n"
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" g = dot(yuv, coeff2);\n"
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" b = dot(yuv, coeff3);\n"
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" a = 1.0;\n"
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" gl_FragColor=vec4(%c, %c, %c, %c);\n"
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"}"
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};
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/* YUY2:r,g,a
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UYVY:a,b,r */
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static const gchar frag_YUY2_UYVY_to_RGB[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D Ytex, UVtex;\n"
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"uniform vec2 tex_scale0;\n"
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"uniform vec2 tex_scale1;\n"
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"uniform vec2 tex_scale2;\n"
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"uniform float width;\n"
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YUV_TO_RGB_COEFFICIENTS
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"void main(void) {\n"
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" vec3 yuv;\n"
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" vec4 uv_texel;\n"
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" float r, g, b, a;\n"
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" float dx1 = -1.0 / width;\n"
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" float dx2 = 0.0;\n"
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" yuv.x = texture2D(Ytex, v_texcoord * tex_scale0).%c;\n"
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" float inorder = mod (v_texcoord.x * width, 2.0);\n"
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" if (inorder < 1.0) {\n"
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" dx2 = -dx1;\n"
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" dx1 = 0.0;\n"
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" }\n"
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" uv_texel.rg = texture2D(Ytex, v_texcoord * tex_scale0 + dx1).r%c;\n"
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" uv_texel.ba = texture2D(Ytex, v_texcoord * tex_scale0 + dx2).r%c;\n"
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" yuv.yz = uv_texel.%c%c;\n"
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" yuv += offset;\n"
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" r = dot(yuv, coeff1);\n"
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" g = dot(yuv, coeff2);\n"
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" b = dot(yuv, coeff3);\n"
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" a = 1.0;\n"
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" gl_FragColor = vec4(%c, %c, %c, %c);\n"
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"}\n";
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static const gchar frag_RGB_to_YUY2_UYVY[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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"uniform float width;\n"
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RGB_TO_YUV_COEFFICIENTS
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"void main(void) {\n"
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" vec4 texel1, texel2;\n"
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" vec2 texel3;\n"
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" float fx, fy, y1, y2, u, v;\n"
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" fx = v_texcoord.x;\n"
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" fy = v_texcoord.y;\n"
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" float inorder = mod (v_texcoord.x * width, 2.0);\n"
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" texel1 = texture2D(tex, vec2(fx, fy)).%c%c%c%c;\n"
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" texel2 = texture2D(tex, vec2(fx+1.0 / width, fy)).%c%c%c%c;\n"
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" y1 = dot(texel1.rgb, coeff1);\n"
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" y2 = dot(texel2.rgb, coeff1);\n"
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" u = dot(texel1.rgb, coeff2);\n"
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" v = dot(texel1.rgb, coeff3);\n"
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" y1 += offset.x;\n"
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" y2 += offset.x;\n"
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" u += offset.y;\n"
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" v += offset.z;\n"
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" if (inorder < 1.0) {\n"
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" texel3.r = %s;\n"
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" texel3.g = %s;\n"
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" } else {\n"
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" texel3.r = %s;\n"
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" texel3.g = %s;\n"
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" }\n"
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" gl_FragColor = vec4(texel3.r, texel3.g, 0.0, 0.0);\n"
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"}\n";
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static const gchar text_vertex_shader[] =
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"attribute vec4 a_position; \n"
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"attribute vec2 a_texcoord; \n"
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"varying vec2 v_texcoord; \n"
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"void main() \n"
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"{ \n"
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" gl_Position = a_position; \n"
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" v_texcoord = a_texcoord; \n"
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"} \n";
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/* *INDENT-ON* */
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struct ConvertInfo
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{
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gint in_n_textures;
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gint out_n_textures;
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gchar *frag_prog;
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const gchar *shader_tex_names[GST_VIDEO_MAX_PLANES];
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gfloat *cms_offset;
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gfloat *cms_coeff1; /* r,y */
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gfloat *cms_coeff2; /* g,u */
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gfloat *cms_coeff3; /* b,v */
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};
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struct _GstGLColorConvertPrivate
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{
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gboolean result;
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struct ConvertInfo convert_info;
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GstGLMemory *in_tex[GST_VIDEO_MAX_PLANES];
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GstGLMemory *out_tex[GST_VIDEO_MAX_PLANES];
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};
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GST_DEBUG_CATEGORY_STATIC (gst_gl_color_convert_debug);
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#define GST_CAT_DEFAULT gst_gl_color_convert_debug
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#define DEBUG_INIT \
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GST_DEBUG_CATEGORY_INIT (gst_gl_color_convert_debug, "glconvert", 0, "convert");
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G_DEFINE_TYPE_WITH_CODE (GstGLColorConvert, gst_gl_color_convert,
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GST_TYPE_OBJECT, DEBUG_INIT);
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static void gst_gl_color_convert_finalize (GObject * object);
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static void gst_gl_color_convert_reset (GstGLColorConvert * convert);
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#define GST_GL_COLOR_CONVERT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
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GST_TYPE_GL_COLOR_CONVERT, GstGLColorConvertPrivate))
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static void
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gst_gl_color_convert_class_init (GstGLColorConvertClass * klass)
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{
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g_type_class_add_private (klass, sizeof (GstGLColorConvertPrivate));
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|
|
G_OBJECT_CLASS (klass)->finalize = gst_gl_color_convert_finalize;
|
|
}
|
|
|
|
static void
|
|
gst_gl_color_convert_init (GstGLColorConvert * convert)
|
|
{
|
|
convert->priv = GST_GL_COLOR_CONVERT_GET_PRIVATE (convert);
|
|
}
|
|
|
|
/**
|
|
* gst_gl_color_convert_new:
|
|
* @context: a #GstGLContext
|
|
*
|
|
* Returns: a new #GstGLColorConvert object
|
|
*/
|
|
GstGLColorConvert *
|
|
gst_gl_color_convert_new (GstGLContext * context)
|
|
{
|
|
GstGLColorConvert *convert;
|
|
|
|
convert = g_object_new (GST_TYPE_GL_COLOR_CONVERT, NULL);
|
|
|
|
convert->context = gst_object_ref (context);
|
|
|
|
gst_video_info_set_format (&convert->in_info, GST_VIDEO_FORMAT_ENCODED, 0, 0);
|
|
gst_video_info_set_format (&convert->out_info, GST_VIDEO_FORMAT_ENCODED, 0,
|
|
0);
|
|
|
|
return convert;
|
|
}
|
|
|
|
static void
|
|
gst_gl_color_convert_finalize (GObject * object)
|
|
{
|
|
GstGLColorConvert *convert;
|
|
|
|
convert = GST_GL_COLOR_CONVERT (object);
|
|
|
|
gst_gl_color_convert_reset (convert);
|
|
|
|
if (convert->context) {
|
|
gst_object_unref (convert->context);
|
|
convert->context = NULL;
|
|
}
|
|
|
|
G_OBJECT_CLASS (gst_gl_color_convert_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_gl_color_convert_reset (GstGLColorConvert * convert)
|
|
{
|
|
guint i;
|
|
|
|
if (convert->fbo || convert->depth_buffer) {
|
|
gst_gl_context_del_fbo (convert->context, convert->fbo,
|
|
convert->depth_buffer);
|
|
convert->fbo = 0;
|
|
convert->depth_buffer = 0;
|
|
}
|
|
|
|
for (i = 0; i < convert->priv->convert_info.out_n_textures; i++) {
|
|
if (convert->priv->out_tex[i])
|
|
gst_memory_unref ((GstMemory *) convert->priv->out_tex[i]);
|
|
convert->priv->out_tex[i] = NULL;
|
|
}
|
|
|
|
if (convert->shader) {
|
|
gst_object_unref (convert->shader);
|
|
convert->shader = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
_gst_gl_color_convert_set_format_unlocked (GstGLColorConvert * convert,
|
|
GstVideoInfo * in_info, GstVideoInfo * out_info)
|
|
{
|
|
g_return_if_fail (convert != NULL);
|
|
g_return_if_fail (in_info);
|
|
g_return_if_fail (out_info);
|
|
g_return_if_fail (GST_VIDEO_INFO_FORMAT (in_info) !=
|
|
GST_VIDEO_FORMAT_UNKNOWN);
|
|
g_return_if_fail (GST_VIDEO_INFO_FORMAT (in_info) !=
|
|
GST_VIDEO_FORMAT_ENCODED);
|
|
g_return_if_fail (GST_VIDEO_INFO_FORMAT (out_info) !=
|
|
GST_VIDEO_FORMAT_UNKNOWN);
|
|
g_return_if_fail (GST_VIDEO_INFO_FORMAT (out_info) !=
|
|
GST_VIDEO_FORMAT_ENCODED);
|
|
|
|
if (gst_video_info_is_equal (&convert->in_info, in_info) &&
|
|
gst_video_info_is_equal (&convert->out_info, out_info))
|
|
return;
|
|
|
|
gst_gl_color_convert_reset (convert);
|
|
convert->in_info = *in_info;
|
|
convert->out_info = *out_info;
|
|
convert->initted = FALSE;
|
|
}
|
|
|
|
/**
|
|
* gst_gl_color_convert_set_format:
|
|
* @convert: a #GstGLColorConvert
|
|
* @in_info: input #GstVideoInfo
|
|
* @out_info: output #GstVideoInfo
|
|
*
|
|
* Initializes @convert with the information required for conversion.
|
|
*/
|
|
void
|
|
gst_gl_color_convert_set_format (GstGLColorConvert * convert,
|
|
GstVideoInfo * in_info, GstVideoInfo * out_info)
|
|
{
|
|
GST_OBJECT_LOCK (convert);
|
|
_gst_gl_color_convert_set_format_unlocked (convert, in_info, out_info);
|
|
GST_OBJECT_UNLOCK (convert);
|
|
}
|
|
|
|
/**
|
|
* gst_gl_color_convert_perform:
|
|
* @convert: a #GstGLColorConvert
|
|
* @inbuf: the texture ids for input formatted according to in_info
|
|
*
|
|
* Converts the data contained by @inbuf using the formats specified by the
|
|
* #GstVideoInfo<!-- -->s passed to gst_gl_color_convert_set_format()
|
|
*
|
|
* Returns: a converted #GstBuffer or %NULL%
|
|
*/
|
|
GstBuffer *
|
|
gst_gl_color_convert_perform (GstGLColorConvert * convert, GstBuffer * inbuf)
|
|
{
|
|
GstBuffer *ret;
|
|
|
|
g_return_val_if_fail (convert != NULL, FALSE);
|
|
|
|
GST_OBJECT_LOCK (convert);
|
|
ret = _gst_gl_color_convert_perform_unlocked (convert, inbuf);
|
|
GST_OBJECT_UNLOCK (convert);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstBuffer *
|
|
_gst_gl_color_convert_perform_unlocked (GstGLColorConvert * convert,
|
|
GstBuffer * inbuf)
|
|
{
|
|
g_return_val_if_fail (convert != NULL, FALSE);
|
|
g_return_val_if_fail (inbuf, FALSE);
|
|
|
|
if (gst_video_info_is_equal (&convert->in_info, &convert->out_info))
|
|
return gst_buffer_ref (inbuf);
|
|
|
|
convert->inbuf = inbuf;
|
|
|
|
gst_gl_context_thread_add (convert->context,
|
|
(GstGLContextThreadFunc) _do_convert, convert);
|
|
|
|
if (!convert->priv->result) {
|
|
if (convert->outbuf)
|
|
gst_object_unref (convert->outbuf);
|
|
convert->outbuf = NULL;
|
|
return NULL;
|
|
}
|
|
|
|
return convert->outbuf;
|
|
}
|
|
|
|
static inline gboolean
|
|
_is_RGBx (GstVideoFormat v_format)
|
|
{
|
|
switch (v_format) {
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
return TRUE;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static inline gchar
|
|
_index_to_shader_swizzle (int idx)
|
|
{
|
|
switch (idx) {
|
|
case 0:
|
|
return 'r';
|
|
case 1:
|
|
return 'g';
|
|
case 2:
|
|
return 'b';
|
|
case 3:
|
|
return 'a';
|
|
default:
|
|
return '#';
|
|
}
|
|
}
|
|
|
|
/* attempts to transform expected to want using swizzling */
|
|
static gchar *
|
|
_RGB_pixel_order (const gchar * expected, const gchar * wanted)
|
|
{
|
|
GString *ret = g_string_sized_new (4);
|
|
gchar *expect, *want;
|
|
int len;
|
|
|
|
if (g_ascii_strcasecmp (expected, wanted) == 0)
|
|
return g_ascii_strdown (expected, -1);
|
|
|
|
expect = g_ascii_strdown (expected, -1);
|
|
want = g_ascii_strdown (wanted, -1);
|
|
|
|
/* pad want with 'a's */
|
|
if ((len = strlen (want)) < 4) {
|
|
gchar *new_want = g_strndup (want, 4);
|
|
while (len < 4) {
|
|
new_want[len] = 'a';
|
|
len++;
|
|
}
|
|
g_free (want);
|
|
want = new_want;
|
|
}
|
|
|
|
/* pad expect with 'a's */
|
|
if ((len = strlen (expect)) < 4) {
|
|
gchar *new_expect = g_strndup (expect, 4);
|
|
while (len < 4) {
|
|
new_expect[len] = 'a';
|
|
len++;
|
|
}
|
|
g_free (expect);
|
|
expect = new_expect;
|
|
}
|
|
|
|
/* build the swizzle format */
|
|
while (want && want[0] != '\0') {
|
|
gchar *val;
|
|
gint idx;
|
|
gchar needle = want[0];
|
|
|
|
if (needle == 'x')
|
|
needle = 'a';
|
|
|
|
if (!(val = strchr (expect, needle))
|
|
&& needle == 'a' && !(val = strchr (expect, 'x')))
|
|
goto fail;
|
|
|
|
idx = (gint) (val - expect);
|
|
|
|
ret = g_string_append_c (ret, _index_to_shader_swizzle (idx));
|
|
want = &want[1];
|
|
}
|
|
|
|
return g_string_free (ret, FALSE);
|
|
|
|
fail:
|
|
g_string_free (ret, TRUE);
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
_RGB_to_RGB (GstGLColorConvert * convert)
|
|
{
|
|
struct ConvertInfo *info = &convert->priv->convert_info;
|
|
GstVideoFormat in_format = GST_VIDEO_INFO_FORMAT (&convert->in_info);
|
|
const gchar *in_format_str = gst_video_format_to_string (in_format);
|
|
GstVideoFormat out_format = GST_VIDEO_INFO_FORMAT (&convert->out_info);
|
|
const gchar *out_format_str = gst_video_format_to_string (out_format);
|
|
gchar *pixel_order = _RGB_pixel_order (in_format_str, out_format_str);
|
|
gchar *alpha = NULL;
|
|
|
|
info->in_n_textures = 1;
|
|
info->out_n_textures = 1;
|
|
if (_is_RGBx (in_format))
|
|
alpha = g_strdup_printf ("t.%c = 1.0;", pixel_order[3]);
|
|
info->frag_prog = g_strdup_printf (frag_REORDER, alpha ? alpha : "",
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
info->shader_tex_names[0] = "tex";
|
|
|
|
g_free (alpha);
|
|
}
|
|
|
|
static void
|
|
_YUV_to_RGB (GstGLColorConvert * convert)
|
|
{
|
|
struct ConvertInfo *info = &convert->priv->convert_info;
|
|
GstVideoFormat out_format = GST_VIDEO_INFO_FORMAT (&convert->out_info);
|
|
const gchar *out_format_str = gst_video_format_to_string (out_format);
|
|
gchar *pixel_order = _RGB_pixel_order ("rgba", out_format_str);
|
|
gboolean texture_rg =
|
|
gst_gl_context_check_feature (convert->context, "GL_EXT_texture_rg")
|
|
|| gst_gl_context_check_feature (convert->context, "GL_ARB_texture_rg");
|
|
|
|
info->out_n_textures = 1;
|
|
|
|
switch (GST_VIDEO_INFO_FORMAT (&convert->in_info)) {
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
info->frag_prog = g_strdup_printf (frag_AYUV_to_RGB, pixel_order[0],
|
|
pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
info->in_n_textures = 1;
|
|
info->shader_tex_names[0] = "tex";
|
|
break;
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
info->frag_prog = g_strdup_printf (frag_PLANAR_YUV_to_RGB, pixel_order[0],
|
|
pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
info->in_n_textures = 3;
|
|
info->shader_tex_names[0] = "Ytex";
|
|
info->shader_tex_names[1] = "Utex";
|
|
info->shader_tex_names[2] = "Vtex";
|
|
break;
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
info->frag_prog = g_strdup_printf (frag_PLANAR_YUV_to_RGB, pixel_order[0],
|
|
pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
info->in_n_textures = 3;
|
|
info->shader_tex_names[0] = "Ytex";
|
|
info->shader_tex_names[1] = "Vtex";
|
|
info->shader_tex_names[2] = "Utex";
|
|
break;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
{
|
|
char uv_val = texture_rg ? 'g' : 'a';
|
|
info->frag_prog = g_strdup_printf (frag_YUY2_UYVY_to_RGB, 'r', uv_val,
|
|
uv_val, 'g', 'a', pixel_order[0], pixel_order[1], pixel_order[2],
|
|
pixel_order[3]);
|
|
info->in_n_textures = 1;
|
|
info->shader_tex_names[0] = "Ytex";
|
|
break;
|
|
}
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
{
|
|
char val2 = texture_rg ? 'g' : 'a';
|
|
info->frag_prog = g_strdup_printf (frag_NV12_NV21_to_RGB, 'r', val2,
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
info->in_n_textures = 2;
|
|
info->shader_tex_names[0] = "Ytex";
|
|
info->shader_tex_names[1] = "UVtex";
|
|
break;
|
|
}
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
{
|
|
char val2 = texture_rg ? 'g' : 'a';
|
|
info->frag_prog = g_strdup_printf (frag_NV12_NV21_to_RGB, val2, 'r',
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
info->in_n_textures = 2;
|
|
info->shader_tex_names[0] = "Ytex";
|
|
info->shader_tex_names[1] = "UVtex";
|
|
break;
|
|
}
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
{
|
|
char y_val = texture_rg ? 'g' : 'a';
|
|
info->frag_prog = g_strdup_printf (frag_YUY2_UYVY_to_RGB, y_val, 'g',
|
|
'g', 'r', 'b', pixel_order[0], pixel_order[1], pixel_order[2],
|
|
pixel_order[3]);
|
|
info->in_n_textures = 1;
|
|
info->shader_tex_names[0] = "Ytex";
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (gst_video_colorimetry_matches (&convert->in_info.colorimetry,
|
|
GST_VIDEO_COLORIMETRY_BT709)) {
|
|
info->cms_offset = (gfloat *) from_yuv_bt709_offset;
|
|
info->cms_coeff1 = (gfloat *) from_yuv_bt709_rcoeff;
|
|
info->cms_coeff2 = (gfloat *) from_yuv_bt709_gcoeff;
|
|
info->cms_coeff3 = (gfloat *) from_yuv_bt709_bcoeff;
|
|
} else {
|
|
/* defaults/bt601 */
|
|
info->cms_offset = (gfloat *) from_yuv_bt601_offset;
|
|
info->cms_coeff1 = (gfloat *) from_yuv_bt601_rcoeff;
|
|
info->cms_coeff2 = (gfloat *) from_yuv_bt601_gcoeff;
|
|
info->cms_coeff3 = (gfloat *) from_yuv_bt601_bcoeff;
|
|
}
|
|
|
|
g_free (pixel_order);
|
|
}
|
|
|
|
static void
|
|
_RGB_to_YUV (GstGLColorConvert * convert)
|
|
{
|
|
struct ConvertInfo *info = &convert->priv->convert_info;
|
|
GstVideoFormat in_format = GST_VIDEO_INFO_FORMAT (&convert->in_info);
|
|
const gchar *in_format_str = gst_video_format_to_string (in_format);
|
|
gchar *pixel_order = _RGB_pixel_order (in_format_str, "rgba");
|
|
const gchar *alpha;
|
|
|
|
info->frag_prog = NULL;
|
|
info->in_n_textures = 1;
|
|
|
|
info->shader_tex_names[0] = "tex";
|
|
|
|
switch (GST_VIDEO_INFO_FORMAT (&convert->out_info)) {
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
alpha = _is_RGBx (in_format) ? "1.0" : "texel.a";
|
|
info->frag_prog = g_strdup_printf (frag_RGB_to_AYUV, pixel_order[0],
|
|
pixel_order[1], pixel_order[2], pixel_order[3], alpha);
|
|
info->out_n_textures = 1;
|
|
break;
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
info->frag_prog = g_strdup_printf (frag_RGB_to_PLANAR_YUV,
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3],
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
info->out_n_textures = 3;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
info->frag_prog = g_strdup_printf (frag_RGB_to_YUY2_UYVY,
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3],
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3],
|
|
"y1", "u", "y2", "v");
|
|
info->out_n_textures = 1;
|
|
break;
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
info->frag_prog = g_strdup_printf (frag_RGB_to_YUY2_UYVY,
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3],
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3],
|
|
"u", "y1", "v", "y2");
|
|
info->out_n_textures = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (gst_video_colorimetry_matches (&convert->in_info.colorimetry,
|
|
GST_VIDEO_COLORIMETRY_BT709)) {
|
|
info->cms_offset = (gfloat *) from_rgb_bt709_offset;
|
|
info->cms_coeff1 = (gfloat *) from_rgb_bt709_ycoeff;
|
|
info->cms_coeff2 = (gfloat *) from_rgb_bt709_ucoeff;
|
|
info->cms_coeff3 = (gfloat *) from_rgb_bt709_vcoeff;
|
|
} else {
|
|
/* defaults/bt601 */
|
|
info->cms_offset = (gfloat *) from_rgb_bt601_offset;
|
|
info->cms_coeff1 = (gfloat *) from_rgb_bt601_ycoeff;
|
|
info->cms_coeff2 = (gfloat *) from_rgb_bt601_ucoeff;
|
|
info->cms_coeff3 = (gfloat *) from_rgb_bt601_vcoeff;
|
|
}
|
|
|
|
g_free (pixel_order);
|
|
}
|
|
|
|
static void
|
|
_RGB_to_GRAY (GstGLColorConvert * convert)
|
|
{
|
|
struct ConvertInfo *info = &convert->priv->convert_info;
|
|
GstVideoFormat in_format = GST_VIDEO_INFO_FORMAT (&convert->in_info);
|
|
const gchar *in_format_str = gst_video_format_to_string (in_format);
|
|
gchar *pixel_order = _RGB_pixel_order (in_format_str, "rgba");
|
|
gchar *alpha = NULL;
|
|
|
|
info->in_n_textures = 1;
|
|
info->out_n_textures = 1;
|
|
info->shader_tex_names[0] = "tex";
|
|
|
|
if (_is_RGBx (in_format))
|
|
alpha = g_strdup_printf ("t.%c = 1.0;", pixel_order[3]);
|
|
|
|
switch (GST_VIDEO_INFO_FORMAT (&convert->out_info)) {
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
info->frag_prog = g_strdup_printf (frag_REORDER, alpha ? alpha : "",
|
|
pixel_order[0], pixel_order[0], pixel_order[0], pixel_order[3]);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
g_free (alpha);
|
|
}
|
|
|
|
static void
|
|
_GRAY_to_RGB (GstGLColorConvert * convert)
|
|
{
|
|
struct ConvertInfo *info = &convert->priv->convert_info;
|
|
GstVideoFormat out_format = GST_VIDEO_INFO_FORMAT (&convert->out_info);
|
|
const gchar *out_format_str = gst_video_format_to_string (out_format);
|
|
gchar *pixel_order = _RGB_pixel_order ("rgba", out_format_str);
|
|
gboolean texture_rg =
|
|
gst_gl_context_check_feature (convert->context, "GL_EXT_texture_rg")
|
|
|| gst_gl_context_check_feature (convert->context, "GL_ARB_texture_rg");
|
|
|
|
info->in_n_textures = 1;
|
|
info->out_n_textures = 1;
|
|
info->shader_tex_names[0] = "tex";
|
|
|
|
switch (GST_VIDEO_INFO_FORMAT (&convert->in_info)) {
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
info->frag_prog = g_strdup_printf (frag_REORDER, "", pixel_order[0],
|
|
pixel_order[0], pixel_order[0], pixel_order[3]);
|
|
break;
|
|
case GST_VIDEO_FORMAT_GRAY16_LE:
|
|
{
|
|
char val2 = texture_rg ? 'g' : 'a';
|
|
info->frag_prog = g_strdup_printf (frag_COMPOSE, val2, 'r',
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
break;
|
|
}
|
|
case GST_VIDEO_FORMAT_GRAY16_BE:
|
|
{
|
|
char val2 = texture_rg ? 'g' : 'a';
|
|
info->frag_prog = g_strdup_printf (frag_COMPOSE, 'r', val2,
|
|
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Called in the gl thread */
|
|
static gboolean
|
|
_init_convert (GstGLColorConvert * convert)
|
|
{
|
|
GstGLFuncs *gl;
|
|
gboolean res;
|
|
struct ConvertInfo *info = &convert->priv->convert_info;
|
|
gint i;
|
|
|
|
gl = convert->context->gl_vtable;
|
|
|
|
if (convert->initted)
|
|
return TRUE;
|
|
|
|
GST_INFO ("Initializing color conversion from %s to %s",
|
|
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (&convert->in_info)),
|
|
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (&convert->out_info)));
|
|
|
|
if (!gl->CreateProgramObject && !gl->CreateProgram) {
|
|
gst_gl_context_set_error (convert->context,
|
|
"Cannot perform color conversion without OpenGL shaders");
|
|
goto error;
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_IS_RGB (&convert->in_info)) {
|
|
if (GST_VIDEO_INFO_IS_RGB (&convert->out_info)) {
|
|
_RGB_to_RGB (convert);
|
|
}
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_IS_YUV (&convert->in_info)) {
|
|
if (GST_VIDEO_INFO_IS_RGB (&convert->out_info)) {
|
|
_YUV_to_RGB (convert);
|
|
}
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_IS_RGB (&convert->in_info)) {
|
|
if (GST_VIDEO_INFO_IS_YUV (&convert->out_info)) {
|
|
_RGB_to_YUV (convert);
|
|
}
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_IS_RGB (&convert->in_info)) {
|
|
if (GST_VIDEO_INFO_IS_GRAY (&convert->out_info)) {
|
|
_RGB_to_GRAY (convert);
|
|
}
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_IS_GRAY (&convert->in_info)) {
|
|
if (GST_VIDEO_INFO_IS_RGB (&convert->out_info)) {
|
|
_GRAY_to_RGB (convert);
|
|
}
|
|
}
|
|
|
|
if (!info->frag_prog || info->in_n_textures == 0 || info->out_n_textures == 0)
|
|
goto unhandled_format;
|
|
|
|
/* multiple draw targets not supported on GLES2...yet */
|
|
if (info->out_n_textures > 1 && (!gl->DrawBuffers ||
|
|
USING_GLES2 (convert->context))) {
|
|
g_free (info->frag_prog);
|
|
GST_ERROR ("Conversion requires output to multiple draw buffers");
|
|
goto incompatible_api;
|
|
}
|
|
|
|
/* Requires reading from a RG/LA framebuffer... */
|
|
if (USING_GLES2 (convert->context) &&
|
|
(GST_VIDEO_INFO_FORMAT (&convert->out_info) == GST_VIDEO_FORMAT_YUY2 ||
|
|
GST_VIDEO_INFO_FORMAT (&convert->out_info) ==
|
|
GST_VIDEO_FORMAT_UYVY)) {
|
|
g_free (info->frag_prog);
|
|
GST_ERROR ("Conversion requires reading with an unsupported format");
|
|
goto incompatible_api;
|
|
}
|
|
|
|
res =
|
|
gst_gl_context_gen_shader (convert->context, text_vertex_shader,
|
|
info->frag_prog, &convert->shader);
|
|
g_free (info->frag_prog);
|
|
if (!res)
|
|
goto error;
|
|
|
|
convert->shader_attr_position_loc =
|
|
gst_gl_shader_get_attribute_location (convert->shader, "a_position");
|
|
convert->shader_attr_texture_loc =
|
|
gst_gl_shader_get_attribute_location (convert->shader, "a_texcoord");
|
|
|
|
gst_gl_shader_use (convert->shader);
|
|
|
|
if (info->cms_offset && info->cms_coeff1
|
|
&& info->cms_coeff2 && info->cms_coeff3) {
|
|
gst_gl_shader_set_uniform_3fv (convert->shader, "offset", 1,
|
|
info->cms_offset);
|
|
gst_gl_shader_set_uniform_3fv (convert->shader, "coeff1", 1,
|
|
info->cms_coeff1);
|
|
gst_gl_shader_set_uniform_3fv (convert->shader, "coeff2", 1,
|
|
info->cms_coeff2);
|
|
gst_gl_shader_set_uniform_3fv (convert->shader, "coeff3", 1,
|
|
info->cms_coeff3);
|
|
}
|
|
|
|
for (i = info->in_n_textures; i >= 0; i--) {
|
|
if (info->shader_tex_names[i])
|
|
gst_gl_shader_set_uniform_1i (convert->shader, info->shader_tex_names[i],
|
|
i);
|
|
}
|
|
|
|
gst_gl_shader_set_uniform_1f (convert->shader, "width",
|
|
GST_VIDEO_INFO_WIDTH (&convert->in_info));
|
|
|
|
gst_gl_context_clear_shader (convert->context);
|
|
|
|
if (!_init_convert_fbo (convert)) {
|
|
goto error;
|
|
}
|
|
|
|
gl->BindTexture (GL_TEXTURE_2D, 0);
|
|
|
|
convert->initted = TRUE;
|
|
|
|
return TRUE;
|
|
|
|
unhandled_format:
|
|
gst_gl_context_set_error (convert->context,
|
|
"Don't know how to convert from %s to %s",
|
|
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (&convert->in_info)),
|
|
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (&convert->out_info)));
|
|
|
|
error:
|
|
return FALSE;
|
|
|
|
incompatible_api:
|
|
{
|
|
gst_gl_context_set_error (convert->context,
|
|
"Converting from %s to %s requires "
|
|
"functionality that the current OpenGL setup does not support",
|
|
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (&convert->in_info)),
|
|
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT
|
|
(&convert->out_info)));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
/* called by _init_convert (in the gl thread) */
|
|
static gboolean
|
|
_init_convert_fbo (GstGLColorConvert * convert)
|
|
{
|
|
GstGLFuncs *gl;
|
|
guint out_width, out_height;
|
|
GLuint fake_texture = 0; /* a FBO must hava texture to init */
|
|
|
|
gl = convert->context->gl_vtable;
|
|
|
|
out_width = GST_VIDEO_INFO_WIDTH (&convert->out_info);
|
|
out_height = GST_VIDEO_INFO_HEIGHT (&convert->out_info);
|
|
|
|
if (!gl->GenFramebuffers) {
|
|
/* turn off the pipeline because Frame buffer object is a not present */
|
|
gst_gl_context_set_error (convert->context,
|
|
"Context, EXT_framebuffer_object supported: no");
|
|
return FALSE;
|
|
}
|
|
|
|
GST_INFO ("Context, EXT_framebuffer_object supported: yes");
|
|
|
|
/* setup FBO */
|
|
gl->GenFramebuffers (1, &convert->fbo);
|
|
gl->BindFramebuffer (GL_FRAMEBUFFER, convert->fbo);
|
|
|
|
/* setup the render buffer for depth */
|
|
gl->GenRenderbuffers (1, &convert->depth_buffer);
|
|
gl->BindRenderbuffer (GL_RENDERBUFFER, convert->depth_buffer);
|
|
if (USING_OPENGL (convert->context)) {
|
|
gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT,
|
|
out_width, out_height);
|
|
gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH24_STENCIL8,
|
|
out_width, out_height);
|
|
}
|
|
if (USING_GLES2 (convert->context)) {
|
|
gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16,
|
|
out_width, out_height);
|
|
}
|
|
|
|
/* a fake texture is attached to the convert FBO (cannot init without it) */
|
|
gl->GenTextures (1, &fake_texture);
|
|
gl->BindTexture (GL_TEXTURE_2D, fake_texture);
|
|
gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, out_width, out_height,
|
|
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
|
|
/* attach the texture to the FBO to renderer to */
|
|
gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
|
|
GL_TEXTURE_2D, fake_texture, 0);
|
|
|
|
/* attach the depth render buffer to the FBO */
|
|
gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
|
|
GL_RENDERBUFFER, convert->depth_buffer);
|
|
|
|
if (USING_OPENGL (convert->context)) {
|
|
gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
|
|
GL_RENDERBUFFER, convert->depth_buffer);
|
|
}
|
|
|
|
if (!gst_gl_context_check_framebuffer_status (convert->context)) {
|
|
gst_gl_context_set_error (convert->context,
|
|
"GL framebuffer status incomplete");
|
|
return FALSE;
|
|
}
|
|
|
|
/* unbind the FBO */
|
|
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
|
|
|
|
gl->DeleteTextures (1, &fake_texture);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Called by the idle function in the gl thread */
|
|
void
|
|
_do_convert (GstGLContext * context, GstGLColorConvert * convert)
|
|
{
|
|
guint in_width, in_height, out_width, out_height;
|
|
struct ConvertInfo *c_info = &convert->priv->convert_info;
|
|
GstMapInfo out_info[GST_VIDEO_MAX_PLANES], in_info[GST_VIDEO_MAX_PLANES];
|
|
gboolean res = TRUE;
|
|
gint i, j = 0;
|
|
|
|
out_width = GST_VIDEO_INFO_WIDTH (&convert->out_info);
|
|
out_height = GST_VIDEO_INFO_HEIGHT (&convert->out_info);
|
|
in_width = GST_VIDEO_INFO_WIDTH (&convert->in_info);
|
|
in_height = GST_VIDEO_INFO_HEIGHT (&convert->in_info);
|
|
|
|
convert->outbuf = NULL;
|
|
|
|
if (!_init_convert (convert)) {
|
|
convert->priv->result = FALSE;
|
|
return;
|
|
}
|
|
|
|
convert->outbuf = gst_buffer_new ();
|
|
if (!gst_gl_memory_setup_buffer (convert->context, &convert->out_info,
|
|
convert->outbuf)) {
|
|
convert->priv->result = FALSE;
|
|
return;
|
|
}
|
|
|
|
gst_buffer_add_video_meta_full (convert->outbuf, 0,
|
|
GST_VIDEO_INFO_FORMAT (&convert->out_info),
|
|
GST_VIDEO_INFO_WIDTH (&convert->out_info),
|
|
GST_VIDEO_INFO_HEIGHT (&convert->out_info),
|
|
GST_VIDEO_INFO_N_PLANES (&convert->out_info),
|
|
convert->out_info.offset, convert->out_info.stride);
|
|
|
|
for (i = 0; i < c_info->in_n_textures; i++) {
|
|
convert->priv->in_tex[i] =
|
|
(GstGLMemory *) gst_buffer_peek_memory (convert->inbuf, i);
|
|
if (!gst_is_gl_memory ((GstMemory *) convert->priv->in_tex[i])) {
|
|
res = FALSE;
|
|
goto out;
|
|
}
|
|
if (!gst_memory_map ((GstMemory *) convert->priv->in_tex[i], &in_info[i],
|
|
GST_MAP_READ | GST_MAP_GL)) {
|
|
res = FALSE;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
for (j = 0; j < c_info->out_n_textures; j++) {
|
|
GstGLMemory *out_tex =
|
|
(GstGLMemory *) gst_buffer_peek_memory (convert->outbuf, j);
|
|
if (!gst_is_gl_memory ((GstMemory *) out_tex)) {
|
|
res = FALSE;
|
|
goto out;
|
|
}
|
|
|
|
if (out_tex->tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE
|
|
|| out_tex->tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA
|
|
|| out_width != out_tex->width || out_height != out_tex->height) {
|
|
/* Luminance formats are not color renderable */
|
|
/* renderering to a framebuffer only renders the intersection of all
|
|
* the attachments i.e. the smallest attachment size */
|
|
if (!convert->priv->out_tex[j])
|
|
convert->priv->out_tex[j] =
|
|
(GstGLMemory *) gst_gl_memory_alloc (context,
|
|
GST_VIDEO_GL_TEXTURE_TYPE_RGBA, out_width, out_height, out_width);
|
|
} else {
|
|
convert->priv->out_tex[j] = out_tex;
|
|
}
|
|
|
|
if (!gst_memory_map ((GstMemory *) convert->priv->out_tex[j], &out_info[j],
|
|
GST_MAP_WRITE | GST_MAP_GL)) {
|
|
res = FALSE;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
GST_LOG_OBJECT (convert, "converting to textures:%p,%p,%p,%p "
|
|
"dimensions:%ux%u, from textures:%p,%p,%p,%p dimensions:%ux%u",
|
|
convert->priv->out_tex[0], convert->priv->out_tex[1],
|
|
convert->priv->out_tex[2], convert->priv->out_tex[3], out_width,
|
|
out_height, convert->priv->in_tex[0], convert->priv->in_tex[1],
|
|
convert->priv->in_tex[2], convert->priv->in_tex[3], in_width, in_height);
|
|
|
|
if (!_do_convert_draw (context, convert))
|
|
res = FALSE;
|
|
|
|
out:
|
|
for (j--; j >= 0; j--) {
|
|
GstGLMemory *out_tex =
|
|
(GstGLMemory *) gst_buffer_peek_memory (convert->outbuf, j);
|
|
gst_memory_unmap ((GstMemory *) convert->priv->out_tex[j], &out_info[j]);
|
|
|
|
if (out_tex->tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE
|
|
|| out_tex->tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA
|
|
|| out_width != out_tex->width || out_height != out_tex->height) {
|
|
GstMapInfo to_info, from_info;
|
|
|
|
if (!gst_memory_map ((GstMemory *) convert->priv->out_tex[j], &from_info,
|
|
GST_MAP_READ | GST_MAP_GL)) {
|
|
gst_gl_context_set_error (convert->context, "Failed to map "
|
|
"intermediate memory");
|
|
res = FALSE;
|
|
continue;
|
|
}
|
|
if (!gst_memory_map ((GstMemory *) out_tex, &to_info,
|
|
GST_MAP_WRITE | GST_MAP_GL)) {
|
|
gst_gl_context_set_error (convert->context, "Failed to map "
|
|
"intermediate memory");
|
|
res = FALSE;
|
|
continue;
|
|
}
|
|
gst_gl_memory_copy_into_texture (convert->priv->out_tex[j],
|
|
out_tex->tex_id, out_tex->tex_type, out_tex->width, out_tex->height,
|
|
out_tex->stride, FALSE);
|
|
gst_memory_unmap ((GstMemory *) convert->priv->out_tex[j], &from_info);
|
|
gst_memory_unmap ((GstMemory *) out_tex, &to_info);
|
|
} else {
|
|
convert->priv->out_tex[j] = NULL;
|
|
}
|
|
}
|
|
|
|
/* YV12 the same as I420 except planes 1+2 swapped */
|
|
if (GST_VIDEO_INFO_FORMAT (&convert->out_info) == GST_VIDEO_FORMAT_YV12) {
|
|
GstMemory *mem1 = gst_buffer_get_memory (convert->outbuf, 1);
|
|
GstMemory *mem2 = gst_buffer_get_memory (convert->outbuf, 2);
|
|
|
|
gst_buffer_replace_memory (convert->outbuf, 1, mem2);
|
|
gst_buffer_replace_memory (convert->outbuf, 2, mem1);
|
|
}
|
|
|
|
for (i--; i >= 0; i--) {
|
|
gst_memory_unmap ((GstMemory *) convert->priv->in_tex[i], &in_info[i]);
|
|
}
|
|
|
|
if (!res) {
|
|
gst_buffer_unref (convert->outbuf);
|
|
convert->outbuf = NULL;
|
|
}
|
|
|
|
convert->priv->result = res;
|
|
return;
|
|
}
|
|
|
|
static gboolean
|
|
_do_convert_draw (GstGLContext * context, GstGLColorConvert * convert)
|
|
{
|
|
GstGLFuncs *gl;
|
|
struct ConvertInfo *c_info = &convert->priv->convert_info;
|
|
guint out_width, out_height;
|
|
gint i;
|
|
|
|
GLint viewport_dim[4];
|
|
|
|
const GLfloat vVertices[] = { 1.0f, -1.0f, 0.0f,
|
|
1.0f, 0.0f,
|
|
-1.0f, -1.0f, 0.0f,
|
|
0.0f, 0.0f,
|
|
-1.0f, 1.0f, 0.0f,
|
|
0.0f, 1.0f,
|
|
1.0f, 1.0f, 0.0f,
|
|
1.0f, 1.0f
|
|
};
|
|
|
|
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
|
|
|
|
GLenum multipleRT[] = {
|
|
GL_COLOR_ATTACHMENT0,
|
|
GL_COLOR_ATTACHMENT1,
|
|
GL_COLOR_ATTACHMENT2
|
|
};
|
|
|
|
gl = context->gl_vtable;
|
|
|
|
out_width = GST_VIDEO_INFO_WIDTH (&convert->out_info);
|
|
out_height = GST_VIDEO_INFO_HEIGHT (&convert->out_info);
|
|
|
|
gl->BindFramebuffer (GL_FRAMEBUFFER, convert->fbo);
|
|
|
|
/* attach the texture to the FBO to renderer to */
|
|
for (i = 0; i < c_info->out_n_textures; i++) {
|
|
/* needed? */
|
|
gl->BindTexture (GL_TEXTURE_2D, convert->priv->out_tex[i]->tex_id);
|
|
|
|
gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i,
|
|
GL_TEXTURE_2D, convert->priv->out_tex[i]->tex_id, 0);
|
|
}
|
|
|
|
if (gl->DrawBuffers)
|
|
gl->DrawBuffers (c_info->out_n_textures, multipleRT);
|
|
else if (gl->DrawBuffer)
|
|
gl->DrawBuffer (GL_COLOR_ATTACHMENT0);
|
|
|
|
gl->GetIntegerv (GL_VIEWPORT, viewport_dim);
|
|
|
|
gl->Viewport (0, 0, out_width, out_height);
|
|
|
|
gl->ClearColor (0.0, 0.0, 0.0, 0.0);
|
|
gl->Clear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
gst_gl_shader_use (convert->shader);
|
|
|
|
gl->VertexAttribPointer (convert->shader_attr_position_loc, 3,
|
|
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
|
|
gl->VertexAttribPointer (convert->shader_attr_texture_loc, 2,
|
|
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
|
|
|
|
gl->EnableVertexAttribArray (convert->shader_attr_position_loc);
|
|
gl->EnableVertexAttribArray (convert->shader_attr_texture_loc);
|
|
|
|
for (i = c_info->in_n_textures - 1; i >= 0; i--) {
|
|
gchar *scale_name = g_strdup_printf ("tex_scale%u", i);
|
|
|
|
gl->ActiveTexture (GL_TEXTURE0 + i);
|
|
gl->BindTexture (GL_TEXTURE_2D, convert->priv->in_tex[i]->tex_id);
|
|
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
|
|
gst_gl_shader_set_uniform_2fv (convert->shader, scale_name, 1,
|
|
convert->priv->in_tex[i]->tex_scaling);
|
|
|
|
g_free (scale_name);
|
|
}
|
|
|
|
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
|
|
|
|
gl->DisableVertexAttribArray (convert->shader_attr_position_loc);
|
|
gl->DisableVertexAttribArray (convert->shader_attr_texture_loc);
|
|
|
|
if (gl->DrawBuffer)
|
|
gl->DrawBuffer (GL_NONE);
|
|
|
|
/* we are done with the shader */
|
|
gst_gl_context_clear_shader (context);
|
|
|
|
gl->Viewport (viewport_dim[0], viewport_dim[1], viewport_dim[2],
|
|
viewport_dim[3]);
|
|
|
|
gst_gl_context_check_framebuffer_status (context);
|
|
|
|
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
|
|
|
|
return TRUE;
|
|
}
|