/* * GStreamer * Copyright (C) 2012-2014 Matthew Waters * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "gstglcolorconvert.h" #include "gl.h" #include "gstglfuncs.h" #include "gstglsl_private.h" /** * SECTION:gstglcolorconvert * @title: GstGLColorConvert * @short_description: convert between video color spaces and formats * @see_also: #GstGLUpload, #GstGLMemory, #GstGLBaseMemory * * #GstGLColorConvert is an object that converts between color spaces and/or * formats using OpenGL Shaders. * * A #GstGLColorConvert can be created with gst_gl_color_convert_new(), the * configuration negotiated with gst_gl_color_convert_transform_caps() and the * conversion performed with gst_gl_color_convert_perform(). * * The glcolorconvertelement provides a GStreamer element that uses * #GstGLColorConvert to convert between video formats and color spaces. */ #define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0)) #define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1)) #define USING_OPENGL30(context) \ (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 3, 0) || USING_OPENGL3(context)) #define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0)) #define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0)) #define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0)) static void _do_convert (GstGLContext * context, GstGLColorConvert * convert); static gboolean _init_convert (GstGLColorConvert * convert); static gboolean _init_convert_fbo (GstGLColorConvert * convert); static GstBuffer *_gst_gl_color_convert_perform_unlocked (GstGLColorConvert * convert, GstBuffer * inbuf); static gboolean _do_convert_draw (GstGLContext * context, GstGLColorConvert * convert); /* *INDENT-OFF* */ typedef struct { GstGLColorConvert *convert; GstBuffer *outbuf; } CopyMetaData; #define YUV_TO_RGB_COEFFICIENTS \ "uniform vec3 offset;\n" \ "uniform vec3 coeff1;\n" \ "uniform vec3 coeff2;\n" \ "uniform vec3 coeff3;\n" /* FIXME: use the colormatrix support from videoconvert */ /* BT. 601 standard with the following ranges: * Y = [16..235] (of 255) * Cb/Cr = [16..240] (of 255) */ static const gfloat from_yuv_bt601_offset[] = {-0.0625f, -0.5f, -0.5f}; static const gfloat from_yuv_bt601_rcoeff[] = {1.164f, 0.000f, 1.596f}; static const gfloat from_yuv_bt601_gcoeff[] = {1.164f,-0.391f,-0.813f}; static const gfloat from_yuv_bt601_bcoeff[] = {1.164f, 2.018f, 0.000f}; /* BT. 709 standard with the following ranges: * Y = [16..235] (of 255) * Cb/Cr = [16..240] (of 255) */ static const gfloat from_yuv_bt709_offset[] = {-0.0625f, -0.5f, -0.5f}; static const gfloat from_yuv_bt709_rcoeff[] = {1.164f, 0.000f, 1.787f}; static const gfloat from_yuv_bt709_gcoeff[] = {1.164f,-0.213f,-0.531f}; static const gfloat from_yuv_bt709_bcoeff[] = {1.164f,2.112f, 0.000f}; #define RGB_TO_YUV_COEFFICIENTS \ "uniform vec3 offset;\n" \ "uniform vec3 coeff1;\n" \ "uniform vec3 coeff2;\n" \ "uniform vec3 coeff3;\n" /* Matrix inverses of the color matrices found above */ /* BT. 601 standard with the following ranges: * Y = [16..235] (of 255) * Cb/Cr = [16..240] (of 255) */ static const gfloat from_rgb_bt601_offset[] = {0.0625f, 0.5f, 0.5f}; static const gfloat from_rgb_bt601_ycoeff[] = {0.256816f, 0.504154f, 0.0979137f}; static const gfloat from_rgb_bt601_ucoeff[] = {-0.148246f, -0.29102f, 0.439266f}; static const gfloat from_rgb_bt601_vcoeff[] = {0.439271f, -0.367833f, -0.071438f}; /* BT. 709 standard with the following ranges: * Y = [16..235] (of 255) * Cb/Cr = [16..240] (of 255) */ static const gfloat from_rgb_bt709_offset[] = {0.0625f, 0.5f, 0.5f}; static const gfloat from_rgb_bt709_ycoeff[] = {0.182604f, 0.614526f, 0.061976f}; static const gfloat from_rgb_bt709_ucoeff[] = {-0.100640f, -0.338688f, 0.439327f}; static const gfloat from_rgb_bt709_vcoeff[] = {0.440654f, -0.400285f, -0.040370f}; /* GRAY16 to RGB conversion * data transferred as GL_LUMINANCE_ALPHA then convert back to GRAY16 * high byte weight as : 255*256/65535 * ([0~1] denormalize to [0~255],shift to high byte,normalize to [0~1]) * low byte weight as : 255/65535 (similar) * */ #define COMPOSE_WEIGHT \ "const vec2 compose_weight = vec2(0.996109, 0.003891);\n" #define DEFAULT_UNIFORMS \ "uniform vec2 tex_scale0;\n" \ "uniform vec2 tex_scale1;\n" \ "uniform vec2 tex_scale2;\n" \ "uniform vec2 tex_scale3;\n" \ "uniform float width;\n" \ "uniform float height;\n" \ "uniform float poffset_x;\n" \ "uniform float poffset_y;\n" #define MAX_FUNCTIONS 4 #define glsl_OES_extension_string "#extension GL_OES_EGL_image_external : require \n" struct shader_templ { const gchar *extensions; const gchar *uniforms; const gchar *functions[MAX_FUNCTIONS]; GstGLTextureTarget target; }; #define glsl_func_yuv_to_rgb \ "vec3 yuv_to_rgb (vec3 val, vec3 offset, vec3 ycoeff, vec3 ucoeff, vec3 vcoeff) {\n" \ " vec3 rgb;\n" \ " val += offset;\n" \ " rgb.r = dot(val, ycoeff);\n" \ " rgb.g = dot(val, ucoeff);\n" \ " rgb.b = dot(val, vcoeff);\n" \ " return rgb;\n" \ "}\n" #define glsl_func_rgb_to_yuv \ "vec3 rgb_to_yuv (vec3 val, vec3 offset, vec3 rcoeff, vec3 gcoeff, vec3 bcoeff) {\n" \ " vec3 yuv;\n" \ " yuv.r = dot(val.rgb, rcoeff);\n" \ " yuv.g = dot(val.rgb, gcoeff);\n" \ " yuv.b = dot(val.rgb, bcoeff);\n" \ " yuv += offset;\n" \ " return yuv;\n" \ "}\n" /* Channel reordering for XYZ <-> ZYX conversion */ static const gchar templ_REORDER_BODY[] = "vec4 t = texture2D(tex, texcoord * tex_scale0);\n" "%s\n" /* clobber alpha channel? */ "gl_FragColor = vec4(t.%c, t.%c, t.%c, t.%c);\n"; static const struct shader_templ templ_REORDER = { NULL, DEFAULT_UNIFORMS "uniform sampler2D tex;\n", { NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* GRAY16 to RGB conversion * data transferred as GL_LUMINANCE_ALPHA then convert back to GRAY16 * high byte weight as : 255*256/65535 * ([0~1] denormalize to [0~255],shift to high byte,normalize to [0~1]) * low byte weight as : 255/65535 (similar) * */ static const gchar templ_COMPOSE_BODY[] = "vec4 rgba;\n" "vec4 t = texture2D(tex, texcoord * tex_scale0);\n" "rgba.rgb = vec3 (dot(t.%c%c, compose_weight));" "rgba.a = 1.0;\n" "gl_FragColor = vec4(rgba.%c, rgba.%c, rgba.%c, rgba.%c);\n"; static const struct shader_templ templ_COMPOSE = { NULL, DEFAULT_UNIFORMS COMPOSE_WEIGHT "uniform sampler2D tex;\n", { NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* Shaders for AYUV and varieties */ static const gchar templ_AYUV_to_RGB_BODY[] = "vec4 texel, rgba;\n" "texel = texture2D(tex, texcoord * tex_scale0);\n" "rgba.rgb = yuv_to_rgb (texel.%s, offset, coeff1, coeff2, coeff3);\n" "rgba.a = texel.%c;\n" "gl_FragColor=vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_AYUV_to_RGB = { NULL, DEFAULT_UNIFORMS YUV_TO_RGB_COEFFICIENTS "uniform sampler2D tex;\n", { glsl_func_yuv_to_rgb, NULL, }, GST_GL_TEXTURE_TARGET_2D }; static const gchar templ_RGB_to_AYUV_BODY[] = "vec4 texel, ayuv;\n" "texel = texture2D(tex, texcoord).%c%c%c%c;\n" "ayuv.%s = rgb_to_yuv (texel.rgb, offset, coeff1, coeff2, coeff3);\n" "ayuv.%c = %s;\n" "gl_FragColor = ayuv;\n"; static const struct shader_templ templ_RGB_to_AYUV = { NULL, DEFAULT_UNIFORMS RGB_TO_YUV_COEFFICIENTS "uniform sampler2D tex;\n", { glsl_func_rgb_to_yuv, NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* YUV to RGB conversion */ static const gchar templ_PLANAR_YUV_to_RGB_BODY[] = "vec4 texel, rgba;\n" /* FIXME: should get the sampling right... */ "texel.x = texture2D(Ytex, texcoord * tex_scale0).r;\n" "texel.y = texture2D(Utex, texcoord * tex_scale1).r;\n" "texel.z = texture2D(Vtex, texcoord * tex_scale2).r;\n" "rgba.rgb = yuv_to_rgb (texel.xyz, offset, coeff1, coeff2, coeff3);\n" "rgba.a = 1.0;\n" "gl_FragColor=vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_PLANAR_YUV_to_RGB = { NULL, DEFAULT_UNIFORMS YUV_TO_RGB_COEFFICIENTS "uniform sampler2D Ytex, Utex, Vtex;\n", { glsl_func_yuv_to_rgb, NULL, }, GST_GL_TEXTURE_TARGET_2D }; static const gchar templ_A420_to_RGB_BODY[] = "vec4 texel, rgba;\n" /* FIXME: should get the sampling right... */ /* first 3 textures (planes) contain YUV */ "texel.x = texture2D(Ytex, texcoord * tex_scale0).r;\n" "texel.y = texture2D(Utex, texcoord * tex_scale1).r;\n" "texel.z = texture2D(Vtex, texcoord * tex_scale2).r;\n" /* last texture contains the alpha buffer */ "texel.w = texture2D(Atex, texcoord * tex_scale3).r;\n" "rgba.rgb = yuv_to_rgb (texel.xyz, offset, coeff1, coeff2, coeff3);\n" "rgba.a = texel.w;\n" /* copy alpha as is */ "gl_FragColor=vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_A420_to_RGB = { NULL, /* 4th uniform is the alpha buffer */ DEFAULT_UNIFORMS YUV_TO_RGB_COEFFICIENTS "uniform sampler2D Ytex, Utex, Vtex, Atex;\n", { glsl_func_yuv_to_rgb, NULL, }, GST_GL_TEXTURE_TARGET_2D }; static const gchar templ_RGB_to_PLANAR_YUV_BODY[] = "vec4 texel;\n" "vec3 yuv;\n" "texel = texture2D(tex, texcoord).%c%c%c%c;\n" /* FIXME: this is not quite correct yet */ "vec4 uv_texel = vec4(0.0);\n" /* One u and v sample can be generated by a nxm sized block given by */ /* @chroma_sampling. The result is the average of all the values in the */ /* block computed with a rolling average. */ "vec2 unnormalization;\n" "if (texcoord.x == v_texcoord.x) {\n" " unnormalization = vec2(width, height);\n" "} else {\n" " unnormalization = vec2 (1.0);\n" "}\n" /* scale for chroma size */ "vec2 chroma_pos = texcoord * chroma_sampling * unnormalization;\n" /* offset chroma to the center of the first texel in the block */ "chroma_pos -= clamp(chroma_sampling * 0.5 - 0.5, vec2(0.0), chroma_sampling);\n" "if (chroma_pos.x < width && chroma_pos.y < height) {\n" " for (int i = 0; i < int(chroma_sampling.x); i++) {\n" " vec2 delta = vec2 (float(i), 0.0);\n" " for (int j = 0; j < int(chroma_sampling.y); j++) {\n" " int n = (i+1)*(j+1);\n" " delta.y = float(j);\n" " vec4 s = texture2D(tex, (chroma_pos + delta) / unnormalization).%c%c%c%c;\n" /* rolling average */ " uv_texel = (float(n-1) * uv_texel + s) / float(n);\n" " }\n" " }\n" "}\n" "yuv.x = rgb_to_yuv (texel.rgb, offset, coeff1, coeff2, coeff3).x;\n" "yuv.yz = rgb_to_yuv (uv_texel.rgb, offset, coeff1, coeff2, coeff3).yz;\n" "gl_FragData[0] = vec4(yuv.x, 0.0, 0.0, 1.0);\n" "gl_FragData[1] = vec4(yuv.y, 0.0, 0.0, 1.0);\n" "gl_FragData[2] = vec4(yuv.z, 0.0, 0.0, 1.0);\n" "%s"; static const struct shader_templ templ_RGB_to_PLANAR_YUV = { NULL, DEFAULT_UNIFORMS RGB_TO_YUV_COEFFICIENTS "uniform sampler2D tex;\n" "uniform vec2 chroma_sampling;\n", { glsl_func_rgb_to_yuv, NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* semi-planar to RGB conversion */ static const gchar templ_SEMI_PLANAR_to_RGB_BODY[] = "vec4 rgba;\n" "vec3 yuv;\n" /* FIXME: should get the sampling right... */ "yuv.x=texture2D(Ytex, texcoord * tex_scale0).r;\n" "yuv.yz=texture2D(UVtex, texcoord * tex_scale1).%c%c;\n" "rgba.rgb = yuv_to_rgb (yuv, offset, coeff1, coeff2, coeff3);\n" "rgba.a = 1.0;\n" "gl_FragColor=vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_SEMI_PLANAR_to_RGB = { NULL, DEFAULT_UNIFORMS YUV_TO_RGB_COEFFICIENTS "uniform sampler2D Ytex, UVtex;\n", { glsl_func_yuv_to_rgb, NULL, }, GST_GL_TEXTURE_TARGET_2D }; static const gchar templ_AV12_to_RGB_BODY[] = "vec4 rgba;\n" "vec4 ayuv;\n" /* FIXME: should get the sampling right... */ "ayuv.x=texture2D(Ytex, texcoord * tex_scale0).r;\n" "ayuv.yz=texture2D(UVtex, texcoord * tex_scale1).rg;\n" "ayuv.a=texture2D(Atex, texcoord * tex_scale2).r;\n" "rgba.rgb = yuv_to_rgb (ayuv.xyz, offset, coeff1, coeff2, coeff3);\n" "rgba.a = ayuv.a;\n" /* copy alpha as is */ "gl_FragColor=vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_AV12_to_RGB = { NULL, DEFAULT_UNIFORMS YUV_TO_RGB_COEFFICIENTS "uniform sampler2D Ytex, UVtex, Atex;\n", { glsl_func_yuv_to_rgb, NULL, }, GST_GL_TEXTURE_TARGET_2D }; #define glsl_func_frag_to_tile \ "ivec2 frag_to_tile(ivec2 tile_coord, ivec2 delta_coord, ivec2 dim, int width, int tiles_per_row, int need_offset) {\n" \ " int tile_size = (dim.x * dim.y);\n" \ " int tile_index = tile_coord.y * tiles_per_row + tile_coord.x;\n" \ " int linear_index = tile_index * tile_size + delta_coord.y * dim.x + delta_coord.x;\n" \ " linear_index += need_offset * tile_size / 2;\n" \ " return ivec2(linear_index % width, linear_index / width);\n" \ "}\n" /* TILED semi-planar to RGB conversion */ static const gchar templ_TILED_SEMI_PLANAR_to_RGB_BODY[] = " vec4 rgba;\n" " vec3 yuv;\n" " ivec2 texel;\n" "\n" " const ivec2 luma_dim = ivec2(%i, %i);\n" " const ivec2 chroma_dim = ivec2(%i, %i);\n" " const int fy = chroma_dim.y * 2 / luma_dim.y;\n" "\n" " int iwidth = int(width);\n" " int tiles_per_row = iwidth / luma_dim.x;\n" "\n" " ivec2 coord = ivec2(gl_FragCoord.xy);\n" " ivec2 tile_coord = coord / luma_dim;\n" " ivec2 delta_coord = coord %% luma_dim;\n" \ " texel = frag_to_tile(tile_coord, delta_coord, luma_dim, iwidth, tiles_per_row, 0);\n" " yuv.x = texelFetch(Ytex, texel, 0).r;\n" "\n" " ivec2 chroma_tcoord = ivec2(tile_coord.x, tile_coord.y / fy);\n" " texel = frag_to_tile(chroma_tcoord, delta_coord / 2, chroma_dim, iwidth / 2, tiles_per_row, tile_coord.y %% fy);\n" " yuv.yz = texelFetch(UVtex, texel, 0).%c%c;\n" "\n" " rgba.rgb = yuv_to_rgb (yuv, offset, coeff1, coeff2, coeff3);\n" " rgba.a = 1.0;\n" " gl_FragColor=vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_TILED_SEMI_PLANAR_to_RGB = { NULL, DEFAULT_UNIFORMS YUV_TO_RGB_COEFFICIENTS "uniform sampler2D Ytex, UVtex;\n", { glsl_func_yuv_to_rgb, glsl_func_frag_to_tile, NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* RGB to NV12/NV21/NV16/NV61 conversion */ /* NV12/NV16: u, v NV21/NV61: v, u */ static const gchar templ_RGB_to_SEMI_PLANAR_YUV_BODY[] = "vec4 texel, uv_texel;\n" "vec3 yuv;\n" "texel = texture2D(tex, texcoord).%c%c%c%c;\n" "uv_texel = texture2D(tex, texcoord * tex_scale0 * chroma_sampling).%c%c%c%c;\n" "yuv.x = rgb_to_yuv (texel.rgb, offset, coeff1, coeff2, coeff3).x;\n" "yuv.yz = rgb_to_yuv (uv_texel.rgb, offset, coeff1, coeff2, coeff3).yz;\n" "gl_FragData[0] = vec4(yuv.x, 0.0, 0.0, 1.0);\n" "gl_FragData[1] = vec4(yuv.%c, yuv.%c, 0.0, 1.0);\n"; static const struct shader_templ templ_RGB_to_SEMI_PLANAR_YUV = { NULL, DEFAULT_UNIFORMS RGB_TO_YUV_COEFFICIENTS "uniform sampler2D tex;\n" "uniform vec2 chroma_sampling;\n", { glsl_func_rgb_to_yuv, NULL, }, GST_GL_TEXTURE_TARGET_2D }; static const gchar templ_RGB_to_AV12_BODY[] = "vec4 texel, uv_texel;\n" "vec4 ayuv;\n" "texel = texture2D(tex, texcoord).%c%c%c%c;\n" "uv_texel = texture2D(tex, texcoord * tex_scale0 * chroma_sampling).%c%c%c%c;\n" "ayuv.x = rgb_to_yuv (texel.rgb, offset, coeff1, coeff2, coeff3).x;\n" "ayuv.yz = rgb_to_yuv (uv_texel.rgb, offset, coeff1, coeff2, coeff3).yz;\n" /* copy alpha as is */ "ayuv.a = texel.a;\n" "gl_FragData[0] = vec4(ayuv.x, 0.0, 0.0, 1.0);\n" "gl_FragData[1] = vec4(ayuv.y, ayuv.z, 0.0, 1.0);\n" "gl_FragData[2] = vec4(ayuv.a, 0.0, 0.0, 1.0);\n"; static const struct shader_templ templ_RGB_to_AV12 = { NULL, DEFAULT_UNIFORMS RGB_TO_YUV_COEFFICIENTS "uniform sampler2D tex;\n" "uniform vec2 chroma_sampling;\n", { glsl_func_rgb_to_yuv, NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* YUY2:r,g,a UYVY:a,b,r */ static const gchar templ_YUY2_UYVY_to_RGB_BODY[] = "vec4 rgba, uv_texel;\n" "vec3 yuv;\n" /* FIXME: should get the sampling right... */ "float dx1 = -poffset_x;\n" "float dx2 = 0.0;\n" "yuv.x = texture2D(Ytex, texcoord * tex_scale0).%c;\n" /* v_texcoord are normalized, texcoord may not be e.g. rectangle textures */ "float inorder = mod (v_texcoord.x * width, 2.0);\n" "if (inorder < 1.0) {\n" " dx2 = -dx1;\n" " dx1 = 0.0;\n" "}\n" "uv_texel.rg = texture2D(Ytex, texcoord * tex_scale0 + vec2(dx1, 0.0)).r%c;\n" "uv_texel.ba = texture2D(Ytex, texcoord * tex_scale0 + vec2(dx2, 0.0)).r%c;\n" "yuv.yz = uv_texel.%c%c;\n" "rgba.rgb = yuv_to_rgb (yuv, offset, coeff1, coeff2, coeff3);\n" "rgba.a = 1.0;\n" "gl_FragColor = vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_YUY2_UYVY_to_RGB = { NULL, DEFAULT_UNIFORMS YUV_TO_RGB_COEFFICIENTS "uniform sampler2D Ytex;\n", { glsl_func_yuv_to_rgb, NULL, }, GST_GL_TEXTURE_TARGET_2D }; static const gchar templ_RGB_to_YUY2_UYVY_BODY[] = "vec4 texel1, texel2;\n" "vec3 yuv, yuv1, yuv2;\n" "float fx, dx, fy;\n" /* v_texcoord are normalized, texcoord may not be e.g. rectangle textures */ "float inorder = mod (v_texcoord.x * width, 2.0);\n" "fx = texcoord.x;\n" "dx = poffset_x;\n" "if (inorder > 1.0) {\n" " dx = -dx;\n" "}\n" "fy = texcoord.y;\n" "texel1 = texture2D(tex, vec2(fx, fy)).%c%c%c%c;\n" "texel2 = texture2D(tex, vec2(fx + dx, fy)).%c%c%c%c;\n" "yuv1 = rgb_to_yuv (texel1.rgb, offset, coeff1, coeff2, coeff3);\n" "yuv2 = rgb_to_yuv (texel2.rgb, offset, coeff1, coeff2, coeff3);\n" "yuv.x = yuv1.x;\n" "yuv.yz = (yuv1.yz + yuv2.yz) * 0.5;\n" "if (inorder < 1.0) {\n" " gl_FragColor = vec4(yuv.%c, yuv.%c, 0.0, 0.0);\n" "} else {\n" " gl_FragColor = vec4(yuv.%c, yuv.%c, 0.0, 0.0);\n" "}\n"; static const struct shader_templ templ_RGB_to_YUY2_UYVY = { NULL, DEFAULT_UNIFORMS RGB_TO_YUV_COEFFICIENTS "uniform sampler2D tex;\n", { glsl_func_rgb_to_yuv, NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* PLANAR RGB to PACKED RGB conversion */ static const gchar templ_PLANAR_RGB_to_PACKED_RGB_BODY[] = "vec4 rgba;\n" "rgba.r = texture2D(Rtex, texcoord * tex_scale0).r;\n" "rgba.g = texture2D(Gtex, texcoord * tex_scale1).r;\n" "rgba.b = texture2D(Btex, texcoord * tex_scale2).r;\n" "%s\n" /* alpha channel */ "gl_FragColor=vec4(rgba.%c,rgba.%c,rgba.%c,rgba.%c);\n"; static const struct shader_templ templ_PLANAR_RGB_to_PACKED_RGB = { NULL, DEFAULT_UNIFORMS "uniform sampler2D Rtex, Gtex, Btex, Atex;\n", { NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* PACKED RGB to PLANAR RGB conversion */ static const gchar templ_PACKED_RGB_to_PLANAR_RGB_BODY[] = "vec4 rgba;\n" "rgba = texture2D(tex, texcoord).%c%c%c%c;\n" "gl_FragData[0] = vec4(rgba.r, 0, 0, 1.0);\n" "gl_FragData[1] = vec4(rgba.g, 0, 0, 1.0);\n" "gl_FragData[2] = vec4(rgba.b, 0, 0, 1.0);\n" "%s\n"; static const struct shader_templ templ_PACKED_RGB_to_PLANAR_RGB = { NULL, DEFAULT_UNIFORMS "uniform sampler2D tex;\n", { NULL, }, GST_GL_TEXTURE_TARGET_2D }; /* PLANAR RGB to PLANAR RGB conversion */ static const gchar templ_PLANAR_RGB_to_PLANAR_RGB_BODY[] = "vec4 rgba;\n" "rgba.r = texture2D(Rtex, texcoord * tex_scale0).r;\n" "rgba.g = texture2D(Gtex, texcoord * tex_scale1).r;\n" "rgba.b = texture2D(Btex, texcoord * tex_scale2).r;\n" "%s\n" /* alpha channel */ "gl_FragData[0] = vec4(rgba.%c, 0, 0, 1.0);\n" "gl_FragData[1] = vec4(rgba.%c, 0, 0, 1.0);\n" "gl_FragData[2] = vec4(rgba.%c, 0, 0, 1.0);\n" "%s\n"; static const struct shader_templ templ_PLANAR_RGB_to_PLANAR_RGB = { NULL, DEFAULT_UNIFORMS "uniform sampler2D Rtex, Gtex, Btex, Atex;\n", { NULL, }, GST_GL_TEXTURE_TARGET_2D }; static const gchar text_vertex_shader[] = "attribute vec4 a_position; \n" "attribute vec2 a_texcoord; \n" "varying vec2 v_texcoord; \n" "void main() \n" "{ \n" " gl_Position = a_position; \n" " v_texcoord = a_texcoord; \n" "} \n"; static const GLfloat vertices[] = { 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 }; static const GLushort indices[] = { 0, 1, 2, 0, 2, 3 }; /* *INDENT-ON* */ struct ConvertInfo { gint in_n_textures; gint out_n_textures; const struct shader_templ *templ; gchar *frag_body; gchar *frag_prog; const gchar *shader_tex_names[GST_VIDEO_MAX_PLANES]; gfloat *cms_offset; gfloat *cms_coeff1; /* r,y */ gfloat *cms_coeff2; /* g,u */ gfloat *cms_coeff3; /* b,v */ gfloat chroma_sampling[2]; }; struct _GstGLColorConvertPrivate { gboolean result; struct ConvertInfo convert_info; GstGLTextureTarget from_texture_target; GstGLTextureTarget to_texture_target; GstGLMemory *in_tex[GST_VIDEO_MAX_PLANES]; GstGLMemory *out_tex[GST_VIDEO_MAX_PLANES]; GstGLFormat in_tex_formats[GST_VIDEO_MAX_PLANES]; GLuint vao; GLuint vertex_buffer; GLuint vbo_indices; GLuint attr_position; GLuint attr_texture; GstCaps *in_caps; GstCaps *out_caps; GstBufferPool *pool; gboolean pool_started; }; GST_DEBUG_CATEGORY_STATIC (gst_gl_color_convert_debug); #define GST_CAT_DEFAULT gst_gl_color_convert_debug #define DEBUG_INIT \ GST_DEBUG_CATEGORY_INIT (gst_gl_color_convert_debug, "glconvert", 0, "convert"); G_DEFINE_TYPE_WITH_CODE (GstGLColorConvert, gst_gl_color_convert, GST_TYPE_OBJECT, G_ADD_PRIVATE (GstGLColorConvert) DEBUG_INIT); static void gst_gl_color_convert_finalize (GObject * object); static void gst_gl_color_convert_reset (GstGLColorConvert * convert); #define GST_GL_COLOR_CONVERT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \ GST_TYPE_GL_COLOR_CONVERT, GstGLColorConvertPrivate)) static void gst_gl_color_convert_class_init (GstGLColorConvertClass * klass) { 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_instance_private (convert); gst_gl_color_convert_reset (convert); } /** * gst_gl_color_convert_new: * @context: a #GstGLContext * * Returns: (transfer full): a new #GstGLColorConvert object * * Since: 1.4 */ GstGLColorConvert * gst_gl_color_convert_new (GstGLContext * context) { GstGLColorConvert *convert; convert = g_object_new (GST_TYPE_GL_COLOR_CONVERT, NULL); gst_object_ref_sink (convert); 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); GST_DEBUG_OBJECT (convert, "Created new colorconvert for context %" GST_PTR_FORMAT, context); 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 _reset_gl (GstGLContext * context, GstGLColorConvert * convert) { const GstGLFuncs *gl = context->gl_vtable; if (convert->priv->vao) { gl->DeleteVertexArrays (1, &convert->priv->vao); convert->priv->vao = 0; } if (convert->priv->vertex_buffer) { gl->DeleteBuffers (1, &convert->priv->vertex_buffer); convert->priv->vertex_buffer = 0; } if (convert->priv->vbo_indices) { gl->DeleteBuffers (1, &convert->priv->vbo_indices); convert->priv->vbo_indices = 0; } } static void gst_gl_color_convert_reset_shader (GstGLColorConvert * convert) { convert->priv->convert_info.chroma_sampling[0] = 1.0f; convert->priv->convert_info.chroma_sampling[1] = 1.0f; if (convert->priv->convert_info.frag_prog) { g_free (convert->priv->convert_info.frag_prog); convert->priv->convert_info.frag_prog = NULL; } if (convert->priv->convert_info.frag_body) { g_free (convert->priv->convert_info.frag_body); convert->priv->convert_info.frag_body = NULL; } if (convert->shader) { gst_object_unref (convert->shader); convert->shader = NULL; } convert->initted = FALSE; } static void gst_gl_color_convert_reset (GstGLColorConvert * convert) { guint i; if (convert->fbo) { gst_object_unref (convert->fbo); convert->fbo = NULL; } 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->priv->pool) { convert->priv->pool_started = FALSE; gst_object_unref (convert->priv->pool); convert->priv->pool = NULL; } gst_caps_replace (&convert->priv->in_caps, NULL); gst_caps_replace (&convert->priv->out_caps, NULL); if (convert->context) { gst_gl_context_thread_add (convert->context, (GstGLContextThreadFunc) _reset_gl, convert); } gst_gl_color_convert_reset_shader (convert); } static gboolean _gst_gl_color_convert_can_passthrough_info (const GstVideoInfo * in, const GstVideoInfo * out) { gint i; if (GST_VIDEO_INFO_FORMAT (in) != GST_VIDEO_INFO_FORMAT (out)) return FALSE; if (GST_VIDEO_INFO_WIDTH (in) != GST_VIDEO_INFO_WIDTH (out)) return FALSE; if (GST_VIDEO_INFO_HEIGHT (in) != GST_VIDEO_INFO_HEIGHT (out)) return FALSE; if (GST_VIDEO_INFO_SIZE (in) != GST_VIDEO_INFO_SIZE (out)) return FALSE; for (i = 0; i < in->finfo->n_planes; i++) { if (in->stride[i] != out->stride[i]) return FALSE; if (in->offset[i] != out->offset[i]) return FALSE; } if (!gst_video_colorimetry_is_equal (&in->colorimetry, &out->colorimetry)) return FALSE; if (in->chroma_site != out->chroma_site) return FALSE; return TRUE; } static gboolean _gst_gl_color_convert_set_caps_unlocked (GstGLColorConvert * convert, GstCaps * in_caps, GstCaps * out_caps) { GstVideoInfo in_info, out_info; GstCapsFeatures *in_features, *out_features; GstGLTextureTarget from_target, to_target; gboolean passthrough; g_return_val_if_fail (convert != NULL, FALSE); g_return_val_if_fail (in_caps, FALSE); g_return_val_if_fail (out_caps, FALSE); GST_LOG_OBJECT (convert, "Setting caps in %" GST_PTR_FORMAT " out %" GST_PTR_FORMAT, in_caps, out_caps); if (!gst_video_info_from_caps (&in_info, in_caps)) g_assert_not_reached (); if (!gst_video_info_from_caps (&out_info, out_caps)) g_assert_not_reached (); g_return_val_if_fail (GST_VIDEO_INFO_FORMAT (&in_info) != GST_VIDEO_FORMAT_UNKNOWN, FALSE); g_return_val_if_fail (GST_VIDEO_INFO_FORMAT (&in_info) != GST_VIDEO_FORMAT_ENCODED, FALSE); g_return_val_if_fail (GST_VIDEO_INFO_FORMAT (&out_info) != GST_VIDEO_FORMAT_UNKNOWN, FALSE); g_return_val_if_fail (GST_VIDEO_INFO_FORMAT (&out_info) != GST_VIDEO_FORMAT_ENCODED, FALSE); in_features = gst_caps_get_features (in_caps, 0); out_features = gst_caps_get_features (out_caps, 0); if (!gst_caps_features_contains (in_features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY) || !gst_caps_features_contains (out_features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY)) { return FALSE; } { GstStructure *in_s = gst_caps_get_structure (in_caps, 0); GstStructure *out_s = gst_caps_get_structure (out_caps, 0); if (gst_structure_has_field_typed (in_s, "texture-target", G_TYPE_STRING)) from_target = gst_gl_texture_target_from_string (gst_structure_get_string (in_s, "texture-target")); else from_target = GST_GL_TEXTURE_TARGET_2D; if (gst_structure_has_field_typed (out_s, "texture-target", G_TYPE_STRING)) to_target = gst_gl_texture_target_from_string (gst_structure_get_string (out_s, "texture-target")); else to_target = GST_GL_TEXTURE_TARGET_2D; if (to_target == GST_GL_TEXTURE_TARGET_NONE || from_target == GST_GL_TEXTURE_TARGET_NONE) /* invalid caps */ return FALSE; } if (gst_video_info_is_equal (&convert->in_info, &in_info) && gst_video_info_is_equal (&convert->out_info, &out_info) && convert->priv->from_texture_target == from_target && convert->priv->to_texture_target == to_target) return TRUE; /* If input and output are identical, pass through directly */ passthrough = _gst_gl_color_convert_can_passthrough_info (&in_info, &out_info) && from_target == to_target; if (!passthrough && to_target != GST_GL_TEXTURE_TARGET_2D && to_target != GST_GL_TEXTURE_TARGET_RECTANGLE) return FALSE; { guint yuv_gray_flags, in_flags, out_flags; in_flags = GST_VIDEO_FORMAT_INFO_FLAGS (in_info.finfo); out_flags = GST_VIDEO_FORMAT_INFO_FLAGS (out_info.finfo); yuv_gray_flags = GST_VIDEO_FORMAT_FLAG_YUV | GST_VIDEO_FORMAT_FLAG_GRAY; /* GRAY/YUV -> GRAY/YUV is not supported for non-passthrough */ if (!passthrough && (in_flags & yuv_gray_flags) != 0 && (out_flags & yuv_gray_flags) != 0) return FALSE; } gst_gl_color_convert_reset (convert); convert->in_info = in_info; convert->out_info = out_info; gst_caps_replace (&convert->priv->in_caps, in_caps); gst_caps_replace (&convert->priv->out_caps, out_caps); convert->priv->from_texture_target = from_target; convert->priv->to_texture_target = to_target; convert->initted = FALSE; convert->passthrough = passthrough; #ifndef GST_DISABLE_GST_DEBUG if (G_UNLIKELY (convert->passthrough)) GST_DEBUG_OBJECT (convert, "Configuring passthrough mode for same in/out caps"); else { GST_DEBUG_OBJECT (convert, "Color converting %" GST_PTR_FORMAT " to %" GST_PTR_FORMAT, in_caps, out_caps); } #endif return TRUE; } /** * gst_gl_color_convert_set_caps: * @convert: a #GstGLColorConvert * @in_caps: input #GstCaps * @out_caps: output #GstCaps * * Initializes @convert with the information required for conversion. * * Since: 1.6 */ gboolean gst_gl_color_convert_set_caps (GstGLColorConvert * convert, GstCaps * in_caps, GstCaps * out_caps) { gboolean ret; GST_OBJECT_LOCK (convert); ret = _gst_gl_color_convert_set_caps_unlocked (convert, in_caps, out_caps); GST_OBJECT_UNLOCK (convert); return ret; } /** * gst_gl_color_convert_decide_allocation: * @convert: a #GstGLColorConvert * @query: a completed ALLOCATION #GstQuery * * Provides an implementation of #GstBaseTransformClass.decide_allocation() * * Returns: whether the allocation parameters were successfully chosen * * Since: 1.8 */ gboolean gst_gl_color_convert_decide_allocation (GstGLColorConvert * convert, GstQuery * query) { GstBufferPool *pool = NULL; GstStructure *config; GstCaps *caps; guint min, max, size, n, i; gboolean update_pool; GstGLVideoAllocationParams *params; GstVideoInfo vinfo; gst_query_parse_allocation (query, &caps, NULL); if (!caps) return FALSE; gst_video_info_from_caps (&vinfo, caps); n = gst_query_get_n_allocation_pools (query); if (n > 0) { update_pool = TRUE; for (i = 0; i < n; i++) { gst_query_parse_nth_allocation_pool (query, i, &pool, &size, &min, &max); if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) { if (pool) gst_object_unref (pool); pool = NULL; } } } if (!pool) { GstVideoInfo vinfo; gst_video_info_init (&vinfo); size = vinfo.size; min = max = 0; update_pool = FALSE; } if (!pool) pool = gst_gl_buffer_pool_new (convert->context); config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (config, caps, size, min, max); gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL)) gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_GL_SYNC_META); params = gst_gl_video_allocation_params_new (convert->context, NULL, &vinfo, 0, NULL, convert->priv->to_texture_target, 0); gst_buffer_pool_config_set_gl_allocation_params (config, (GstGLAllocationParams *) params); gst_gl_allocation_params_free ((GstGLAllocationParams *) params); if (!gst_buffer_pool_set_config (pool, config)) GST_WARNING_OBJECT (convert, "Failed to set buffer pool config"); if (update_pool) gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max); else gst_query_add_allocation_pool (query, pool, size, min, max); if (convert->priv->pool) { gst_object_unref (convert->priv->pool); convert->priv->pool_started = FALSE; } convert->priv->pool = pool; return TRUE; } static void _init_value_string_list (GValue * list, ...) { GValue item = G_VALUE_INIT; gchar *str; va_list args; g_value_init (list, GST_TYPE_LIST); va_start (args, list); while ((str = va_arg (args, gchar *))) { g_value_init (&item, G_TYPE_STRING); g_value_set_string (&item, str); gst_value_list_append_value (list, &item); g_value_unset (&item); } va_end (args); } static void _append_value_string_list (GValue * list, ...) { GValue item = G_VALUE_INIT; gchar *str; va_list args; va_start (args, list); while ((str = va_arg (args, gchar *))) { g_value_init (&item, G_TYPE_STRING); g_value_set_string (&item, str); gst_value_list_append_value (list, &item); g_value_unset (&item); } va_end (args); } static void _init_supported_formats (GstGLContext * context, gboolean output, GValue * supported_formats) { /* Assume if context == NULL that we don't have a GL context and can * do the conversion */ /* Always supported input and output formats */ _init_value_string_list (supported_formats, "RGBA", "RGB", "RGBx", "BGR", "BGRx", "BGRA", "xRGB", "xBGR", "ARGB", "ABGR", "GRAY8", "GRAY16_LE", "GRAY16_BE", "AYUV", "VUYA", "YUY2", "UYVY", NULL); /* Always supported input formats or output with multiple draw buffers */ if (!output || (!context || context->gl_vtable->DrawBuffers)) _append_value_string_list (supported_formats, "GBRA", "GBR", "RGBP", "BGRP", "Y444", "I420", "YV12", "Y42B", "Y41B", "NV12", "NV21", "NV16", "NV61", "A420", "AV12", NULL); /* Requires reading from a RG/LA framebuffer... */ if (!context || (USING_GLES3 (context) || USING_OPENGL (context))) _append_value_string_list (supported_formats, "YUY2", "UYVY", NULL); if (!context || gst_gl_format_is_supported (context, GST_GL_RGBA16)) _append_value_string_list (supported_formats, "ARGB64", NULL); if (!context || gst_gl_format_is_supported (context, GST_GL_RGB565)) _append_value_string_list (supported_formats, "RGB16", "BGR16", NULL); if (!context || gst_gl_format_is_supported (context, GST_GL_RGB10_A2)) { #if G_BYTE_ORDER == G_LITTLE_ENDIAN _append_value_string_list (supported_formats, "BGR10A2_LE", "RGB10A2_LE", "Y410", NULL); #else _append_value_string_list (supported_formats, "Y410", NULL); #endif } if (!context || (gst_gl_format_is_supported (context, GST_GL_R16) && gst_gl_format_is_supported (context, GST_GL_RG16))) { #if G_BYTE_ORDER == G_LITTLE_ENDIAN _append_value_string_list (supported_formats, "P010_10LE", "P012_LE", "P016_LE", NULL); #else _append_value_string_list (supported_formats, "P010_10BE", "P012_BE", "P016_BE", NULL); #endif } if (!context || (gst_gl_format_is_supported (context, GST_GL_RG16))) { _append_value_string_list (supported_formats, "Y210", NULL); #if G_BYTE_ORDER == G_LITTLE_ENDIAN _append_value_string_list (supported_formats, "Y212_LE", NULL); #else _append_value_string_list (supported_formats, "Y212_BE", NULL); #endif } if (!context || gst_gl_format_is_supported (context, GST_GL_RGBA16)) { #if G_BYTE_ORDER == G_LITTLE_ENDIAN _append_value_string_list (supported_formats, "Y412_LE", NULL); #else _append_value_string_list (supported_formats, "Y412_BE", NULL); #endif } if (!context || USING_GLES3 (context) || USING_OPENGL30 (context)) { _append_value_string_list (supported_formats, "NV12_16L32S", "NV12_4L4", NULL); } } /* copies the given caps */ static GstCaps * gst_gl_color_convert_caps_transform_format_info (GstGLContext * context, gboolean output, GstCaps * caps) { GstStructure *st; GstCapsFeatures *f; gint i, n; GstCaps *res; GValue supported_formats = G_VALUE_INIT; GValue rgb_formats = G_VALUE_INIT; GValue supported_rgb_formats = G_VALUE_INIT; /* There are effectively two modes here with the RGB/YUV transition: * 1. There is a RGB-like format as input and we can transform to YUV or, * 2. No RGB-like format as input so we can only transform to RGB-like formats * * We also filter down the list of formats depending on what the OpenGL * context supports (when provided). */ _init_value_string_list (&rgb_formats, "RGBA", "ARGB", "BGRA", "ABGR", "RGBx", "xRGB", "BGRx", "xBGR", "RGB", "BGR", "ARGB64", "BGR10A2_LE", "RGB10A2_LE", NULL); _init_supported_formats (context, output, &supported_formats); gst_value_intersect (&supported_rgb_formats, &rgb_formats, &supported_formats); res = gst_caps_new_empty (); n = gst_caps_get_size (caps); for (i = 0; i < n; i++) { const GValue *format; st = gst_caps_get_structure (caps, i); f = gst_caps_get_features (caps, i); format = gst_structure_get_value (st, "format"); st = gst_structure_copy (st); if (GST_VALUE_HOLDS_LIST (format)) { gboolean have_rgb_formats = FALSE; GValue passthrough_formats = G_VALUE_INIT; gint j, len; g_value_init (&passthrough_formats, GST_TYPE_LIST); len = gst_value_list_get_size (format); for (j = 0; j < len; j++) { const GValue *val; val = gst_value_list_get_value (format, j); if (G_VALUE_HOLDS_STRING (val)) { const gchar *format_str = g_value_get_string (val); GstVideoFormat v_format = gst_video_format_from_string (format_str); const GstVideoFormatInfo *t_info = gst_video_format_get_info (v_format); if (GST_VIDEO_FORMAT_INFO_FLAGS (t_info) & (GST_VIDEO_FORMAT_FLAG_YUV | GST_VIDEO_FORMAT_FLAG_GRAY)) { gst_value_list_append_value (&passthrough_formats, val); } else if (GST_VIDEO_FORMAT_INFO_FLAGS (t_info) & GST_VIDEO_FORMAT_FLAG_RGB) { have_rgb_formats = TRUE; break; } } } if (have_rgb_formats) { gst_structure_set_value (st, "format", &supported_formats); } else { /* add passthrough structure, then the rgb conversion structure */ gst_structure_set_value (st, "format", &passthrough_formats); gst_caps_append_structure_full (res, gst_structure_copy (st), gst_caps_features_copy (f)); gst_structure_set_value (st, "format", &supported_rgb_formats); } g_value_unset (&passthrough_formats); } else if (G_VALUE_HOLDS_STRING (format)) { const gchar *format_str = g_value_get_string (format); GstVideoFormat v_format = gst_video_format_from_string (format_str); const GstVideoFormatInfo *t_info = gst_video_format_get_info (v_format); if (GST_VIDEO_FORMAT_INFO_FLAGS (t_info) & (GST_VIDEO_FORMAT_FLAG_YUV | GST_VIDEO_FORMAT_FLAG_GRAY)) { /* add passthrough structure, then the rgb conversion structure */ gst_structure_set_value (st, "format", format); gst_caps_append_structure_full (res, gst_structure_copy (st), gst_caps_features_copy (f)); gst_structure_set_value (st, "format", &supported_rgb_formats); } else { /* RGB */ gst_structure_set_value (st, "format", &supported_formats); } } gst_structure_remove_fields (st, "colorimetry", "chroma-site", "texture-target", NULL); gst_caps_append_structure_full (res, st, gst_caps_features_copy (f)); } g_value_unset (&supported_formats); g_value_unset (&rgb_formats); g_value_unset (&supported_rgb_formats); return res; } /** * gst_gl_color_convert_transform_caps: * @context: a #GstGLContext to use for transforming @caps * @direction: a #GstPadDirection * @caps: (transfer none): the #GstCaps to transform * @filter: (transfer none): a set of filter #GstCaps * * Provides an implementation of #GstBaseTransformClass.transform_caps() * * Returns: (transfer full): the converted #GstCaps * * Since: 1.6 */ GstCaps * gst_gl_color_convert_transform_caps (GstGLContext * context, GstPadDirection direction, GstCaps * caps, GstCaps * filter) { caps = gst_gl_color_convert_caps_transform_format_info (context, direction == GST_PAD_SRC, caps); if (filter) { GstCaps *tmp; tmp = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST); gst_caps_unref (caps); caps = tmp; } return caps; } /* fixation from videoconvert */ #define SCORE_FORMAT_CHANGE 1 #define SCORE_DEPTH_CHANGE 1 #define SCORE_ALPHA_CHANGE 1 #define SCORE_CHROMA_W_CHANGE 1 #define SCORE_CHROMA_H_CHANGE 1 #define SCORE_PALETTE_CHANGE 1 #define SCORE_COLORSPACE_LOSS 2 /* RGB <-> YUV */ #define SCORE_DEPTH_LOSS 4 /* change bit depth */ #define SCORE_ALPHA_LOSS 8 /* lose the alpha channel */ #define SCORE_CHROMA_W_LOSS 16 /* vertical subsample */ #define SCORE_CHROMA_H_LOSS 32 /* horizontal subsample */ #define SCORE_PALETTE_LOSS 64 /* convert to palette format */ #define SCORE_COLOR_LOSS 128 /* convert to GRAY */ #define COLORSPACE_MASK (GST_VIDEO_FORMAT_FLAG_YUV | \ GST_VIDEO_FORMAT_FLAG_RGB | GST_VIDEO_FORMAT_FLAG_GRAY) #define ALPHA_MASK (GST_VIDEO_FORMAT_FLAG_ALPHA) #define PALETTE_MASK (GST_VIDEO_FORMAT_FLAG_PALETTE) static GstGLTextureTarget _texture_target_demask (guint target_mask) { if (target_mask & (1 << GST_GL_TEXTURE_TARGET_2D)) { return GST_GL_TEXTURE_TARGET_2D; } if (target_mask & (1 << GST_GL_TEXTURE_TARGET_RECTANGLE)) { return GST_GL_TEXTURE_TARGET_RECTANGLE; } if (target_mask & (1 << GST_GL_TEXTURE_TARGET_EXTERNAL_OES)) { return GST_GL_TEXTURE_TARGET_EXTERNAL_OES; } return 0; } /* calculate how much loss a conversion would be */ static void score_format_target (const GstVideoFormatInfo * in_info, guint targets_mask, GstVideoFormat v_format, guint other_targets_mask, gint * min_loss, const GstVideoFormatInfo ** out_info, GstGLTextureTarget * result) { const GstVideoFormatInfo *t_info; GstVideoFormatFlags in_flags, t_flags; gint loss; t_info = gst_video_format_get_info (v_format); if (!t_info) return; /* accept input format immediately without loss */ if (in_info == t_info && (targets_mask & other_targets_mask) != 0) { *min_loss = 0; *out_info = t_info; *result = _texture_target_demask (targets_mask & other_targets_mask); return; } /* can only passthrough external-oes textures */ other_targets_mask &= ~(1 << GST_GL_TEXTURE_TARGET_EXTERNAL_OES); if (other_targets_mask == 0) return; /* try to keep the same target */ if (targets_mask & other_targets_mask) other_targets_mask = targets_mask & other_targets_mask; loss = SCORE_FORMAT_CHANGE; in_flags = GST_VIDEO_FORMAT_INFO_FLAGS (in_info); in_flags &= ~GST_VIDEO_FORMAT_FLAG_LE; in_flags &= ~GST_VIDEO_FORMAT_FLAG_COMPLEX; in_flags &= ~GST_VIDEO_FORMAT_FLAG_UNPACK; t_flags = GST_VIDEO_FORMAT_INFO_FLAGS (t_info); t_flags &= ~GST_VIDEO_FORMAT_FLAG_LE; t_flags &= ~GST_VIDEO_FORMAT_FLAG_COMPLEX; t_flags &= ~GST_VIDEO_FORMAT_FLAG_UNPACK; /* GRAY/YUV -> GRAY/YUV is not supported */ if ((in_flags & (GST_VIDEO_FORMAT_FLAG_YUV | GST_VIDEO_FORMAT_FLAG_GRAY)) != 0 && (t_flags & (GST_VIDEO_FORMAT_FLAG_YUV | GST_VIDEO_FORMAT_FLAG_GRAY)) != 0) return; if ((t_flags & PALETTE_MASK) != (in_flags & PALETTE_MASK)) { loss += SCORE_PALETTE_CHANGE; if (t_flags & PALETTE_MASK) loss += SCORE_PALETTE_LOSS; } if ((t_flags & COLORSPACE_MASK) != (in_flags & COLORSPACE_MASK)) { loss += SCORE_COLORSPACE_LOSS; if (t_flags & GST_VIDEO_FORMAT_FLAG_GRAY) loss += SCORE_COLOR_LOSS; } if ((t_flags & ALPHA_MASK) != (in_flags & ALPHA_MASK)) { loss += SCORE_ALPHA_CHANGE; if (in_flags & ALPHA_MASK) loss += SCORE_ALPHA_LOSS; } if ((in_info->h_sub[1]) != (t_info->h_sub[1])) { loss += SCORE_CHROMA_H_CHANGE; if ((in_info->h_sub[1]) < (t_info->h_sub[1])) loss += SCORE_CHROMA_H_LOSS; } if ((in_info->w_sub[1]) != (t_info->w_sub[1])) { loss += SCORE_CHROMA_W_CHANGE; if ((in_info->w_sub[1]) < (t_info->w_sub[1])) loss += SCORE_CHROMA_W_LOSS; } if ((in_info->bits) != (t_info->bits)) { loss += SCORE_DEPTH_CHANGE; if ((in_info->bits) > (t_info->bits)) loss += SCORE_DEPTH_LOSS; } if (loss < *min_loss) { GstGLTextureTarget target = _texture_target_demask (other_targets_mask); if (target != 0) { *out_info = t_info; *min_loss = loss; *result = target; } } } static void gst_gl_color_convert_fixate_format_target (GstCaps * caps, GstCaps * result) { GstStructure *ins, *outs; const gchar *in_format; const GstVideoFormatInfo *in_info, *out_info = NULL; const GValue *targets; guint targets_mask = 0; GstGLTextureTarget target; gint min_loss = G_MAXINT; guint i, capslen; ins = gst_caps_get_structure (caps, 0); in_format = gst_structure_get_string (ins, "format"); if (!in_format) return; targets = gst_structure_get_value (ins, "texture-target"); targets_mask = gst_gl_value_get_texture_target_mask (targets); if (!targets_mask) return; in_info = gst_video_format_get_info (gst_video_format_from_string (in_format)); if (!in_info) return; outs = gst_caps_get_structure (result, 0); capslen = gst_caps_get_size (result); for (i = 0; i < capslen; i++) { GstStructure *tests; const GValue *format; const GValue *other_targets; guint other_targets_mask = 0; tests = gst_caps_get_structure (result, i); format = gst_structure_get_value (tests, "format"); other_targets = gst_structure_get_value (tests, "texture-target"); /* should not happen */ if (format == NULL || other_targets == NULL) continue; other_targets_mask = gst_gl_value_get_texture_target_mask (other_targets); if (GST_VALUE_HOLDS_LIST (format)) { gint j, len; len = gst_value_list_get_size (format); for (j = 0; j < len; j++) { const GValue *val; val = gst_value_list_get_value (format, j); if (G_VALUE_HOLDS_STRING (val)) { const gchar *format_str = g_value_get_string (val); GstVideoFormat v_format = gst_video_format_from_string (format_str); score_format_target (in_info, targets_mask, v_format, other_targets_mask, &min_loss, &out_info, &target); if (min_loss == 0) break; } } } else if (G_VALUE_HOLDS_STRING (format)) { const gchar *format_str = g_value_get_string (format); GstVideoFormat v_format = gst_video_format_from_string (format_str); score_format_target (in_info, targets_mask, v_format, other_targets_mask, &min_loss, &out_info, &target); } } if (out_info) gst_structure_set (outs, "format", G_TYPE_STRING, GST_VIDEO_FORMAT_INFO_NAME (out_info), NULL); if (target) gst_structure_set (outs, "texture-target", G_TYPE_STRING, gst_gl_texture_target_to_string (target), NULL); } /** * gst_gl_color_convert_fixate_caps: * @context: a #GstGLContext to use for transforming @caps * @direction: a #GstPadDirection * @caps: (transfer none): the #GstCaps of @direction * @other: (transfer full): the #GstCaps to fixate * * Provides an implementation of #GstBaseTransformClass.fixate_caps() * * Returns: (transfer full): the fixated #GstCaps * * Since: 1.8 */ GstCaps * gst_gl_color_convert_fixate_caps (GstGLContext * context, GstPadDirection direction, GstCaps * caps, GstCaps * other) { GstCaps *result; result = gst_caps_intersect (other, caps); if (gst_caps_is_empty (result)) { gst_caps_unref (result); result = other; } else { gst_caps_unref (other); } result = gst_caps_make_writable (result); gst_gl_color_convert_fixate_format_target (caps, result); result = gst_caps_fixate (result); if (direction == GST_PAD_SINK) { if (gst_caps_is_subset (caps, result)) { gst_caps_replace (&result, caps); } } return result; } /** * gst_gl_color_convert_perform: * @convert: a #GstGLColorConvert * @inbuf: (transfer none): the #GstGLMemory filled #GstBuffer to convert * * Converts the data contained by @inbuf using the formats specified by the * #GstCaps passed to gst_gl_color_convert_set_caps() * * Returns: (transfer full) (nullable): a converted #GstBuffer or %NULL * * Since: 1.4 */ 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 (G_UNLIKELY (convert->passthrough)) 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_buffer_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 gboolean _is_planar_rgb (GstVideoFormat v_format) { switch (v_format) { case GST_VIDEO_FORMAT_GBR: case GST_VIDEO_FORMAT_RGBP: case GST_VIDEO_FORMAT_BGRP: case GST_VIDEO_FORMAT_GBR_10BE: case GST_VIDEO_FORMAT_GBR_10LE: case GST_VIDEO_FORMAT_GBRA: case GST_VIDEO_FORMAT_GBRA_10BE: case GST_VIDEO_FORMAT_GBRA_10LE: case GST_VIDEO_FORMAT_GBR_12BE: case GST_VIDEO_FORMAT_GBR_12LE: case GST_VIDEO_FORMAT_GBRA_12BE: case GST_VIDEO_FORMAT_GBRA_12LE: 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; gchar *orig_want; int len; gboolean discard_output = TRUE; if (g_ascii_strcasecmp (expected, wanted) == 0) { g_string_free (ret, TRUE); return g_ascii_strdown (expected, -1); } expect = g_ascii_strdown (expected, -1); orig_want = want = g_ascii_strdown (wanted, -1); if (strcmp (expect, "rgb16") == 0 || strcmp (expect, "bgr16") == 0) { gchar *temp = expect; expect = g_strndup (temp, 3); g_free (temp); } else if (strcmp (expect, "bgr10a2_le") == 0) { gchar *temp = expect; expect = g_strndup ("bgra", 4); g_free (temp); } else if (strcmp (expect, "rgb10a2_le") == 0) { gchar *temp = expect; expect = g_strndup ("rgba", 4); g_free (temp); } else if (strcmp (expect, "rgbp") == 0 || strcmp (expect, "bgrp") == 0) { gchar *temp = expect; expect = g_strndup (temp, 3); g_free (temp); } if (strcmp (want, "rgb16") == 0 || strcmp (want, "bgr16") == 0) { gchar *temp = want; orig_want = want = g_strndup (temp, 3); g_free (temp); } else if (strcmp (want, "bgr10a2_le") == 0) { gchar *temp = want; orig_want = want = g_strndup ("bgra", 4); g_free (temp); } else if (strcmp (want, "rgb10a2_le") == 0) { gchar *temp = want; orig_want = want = g_strndup ("rgba", 4); g_free (temp); } /* 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); orig_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 out; idx = (gint) (val - expect); ret = g_string_append_c (ret, _index_to_shader_swizzle (idx)); want = &want[1]; } discard_output = FALSE; out: g_free (orig_want); g_free (expect); return g_string_free (ret, discard_output); } static guint _get_n_textures (GstVideoFormat v_format) { switch (v_format) { case GST_VIDEO_FORMAT_RGBA: case GST_VIDEO_FORMAT_RGBx: case GST_VIDEO_FORMAT_ARGB: case GST_VIDEO_FORMAT_xRGB: case GST_VIDEO_FORMAT_BGRA: case GST_VIDEO_FORMAT_BGRx: case GST_VIDEO_FORMAT_ABGR: case GST_VIDEO_FORMAT_xBGR: case GST_VIDEO_FORMAT_RGB: case GST_VIDEO_FORMAT_BGR: case GST_VIDEO_FORMAT_AYUV: case GST_VIDEO_FORMAT_VUYA: case GST_VIDEO_FORMAT_GRAY8: case GST_VIDEO_FORMAT_GRAY16_LE: case GST_VIDEO_FORMAT_GRAY16_BE: case GST_VIDEO_FORMAT_YUY2: case GST_VIDEO_FORMAT_UYVY: case GST_VIDEO_FORMAT_RGB16: case GST_VIDEO_FORMAT_BGR16: case GST_VIDEO_FORMAT_ARGB64: case GST_VIDEO_FORMAT_BGR10A2_LE: case GST_VIDEO_FORMAT_RGB10A2_LE: case GST_VIDEO_FORMAT_Y410: case GST_VIDEO_FORMAT_Y210: case GST_VIDEO_FORMAT_Y212_LE: case GST_VIDEO_FORMAT_Y212_BE: case GST_VIDEO_FORMAT_Y412_LE: case GST_VIDEO_FORMAT_Y412_BE: return 1; case GST_VIDEO_FORMAT_NV12: case GST_VIDEO_FORMAT_NV21: case GST_VIDEO_FORMAT_NV16: case GST_VIDEO_FORMAT_NV61: case GST_VIDEO_FORMAT_P010_10LE: case GST_VIDEO_FORMAT_P010_10BE: case GST_VIDEO_FORMAT_P012_LE: case GST_VIDEO_FORMAT_P012_BE: case GST_VIDEO_FORMAT_P016_LE: case GST_VIDEO_FORMAT_P016_BE: case GST_VIDEO_FORMAT_NV12_16L32S: case GST_VIDEO_FORMAT_NV12_4L4: return 2; case GST_VIDEO_FORMAT_I420: case GST_VIDEO_FORMAT_Y444: case GST_VIDEO_FORMAT_Y42B: case GST_VIDEO_FORMAT_Y41B: case GST_VIDEO_FORMAT_YV12: case GST_VIDEO_FORMAT_GBR: case GST_VIDEO_FORMAT_RGBP: case GST_VIDEO_FORMAT_BGRP: case GST_VIDEO_FORMAT_AV12: return 3; case GST_VIDEO_FORMAT_GBRA: case GST_VIDEO_FORMAT_A420: return 4; default: g_assert_not_reached (); return 0; } } static void _PLANAR_RGB_to_PLANAR_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); const gchar *in_alpha = NULL; gchar *out_alpha = NULL; info->frag_prog = NULL; if (GST_VIDEO_INFO_HAS_ALPHA (&convert->in_info)) { in_alpha = "rgba.a = texture2D(Atex, texcoord * tex_scale3).r;"; info->shader_tex_names[0] = "Rtex"; info->shader_tex_names[1] = "Gtex"; info->shader_tex_names[2] = "Btex"; info->shader_tex_names[3] = "Atex"; } else { in_alpha = "rgba.a = 1.0;"; info->shader_tex_names[0] = "Rtex"; info->shader_tex_names[1] = "Gtex"; info->shader_tex_names[2] = "Btex"; } if (GST_VIDEO_INFO_HAS_ALPHA (&convert->out_info)) { out_alpha = g_strdup_printf ("gl_FragData[3] = vec4(rgba.%c, 0, 0, 1.0);", pixel_order[3]); info->out_n_textures = 4; } else { out_alpha = g_strdup_printf ("\n"); info->out_n_textures = 3; } info->templ = &templ_PLANAR_RGB_to_PLANAR_RGB; info->frag_body = g_strdup_printf (templ_PLANAR_RGB_to_PLANAR_RGB_BODY, in_alpha, pixel_order[0], pixel_order[1], pixel_order[2], out_alpha); g_free (out_alpha); g_free (pixel_order); } static void _PLANAR_RGB_to_PACKED_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); const gchar *alpha = NULL; info->frag_prog = NULL; if (GST_VIDEO_INFO_HAS_ALPHA (&convert->in_info)) { alpha = "rgba.a = texture2D(Atex, texcoord * tex_scale3).r;"; info->shader_tex_names[0] = "Rtex"; info->shader_tex_names[1] = "Gtex"; info->shader_tex_names[2] = "Btex"; info->shader_tex_names[3] = "Atex"; } else { alpha = "rgba.a = 1.0;"; info->shader_tex_names[0] = "Rtex"; info->shader_tex_names[1] = "Gtex"; info->shader_tex_names[2] = "Btex"; } info->out_n_textures = 1; info->templ = &templ_PLANAR_RGB_to_PACKED_RGB; info->frag_body = g_strdup_printf (templ_PLANAR_RGB_to_PACKED_RGB_BODY, alpha, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); g_free (pixel_order); } static void _PACKED_RGB_to_PLANAR_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); const gchar *alpha; info->frag_prog = NULL; info->shader_tex_names[0] = "tex"; if (GST_VIDEO_INFO_HAS_ALPHA (&convert->out_info)) { alpha = "gl_FragData[3] = vec4(rgba.a, 0, 0, 1.0);"; info->out_n_textures = 4; } else { alpha = ""; info->out_n_textures = 3; } info->templ = &templ_PACKED_RGB_to_PLANAR_RGB; info->frag_body = g_strdup_printf (templ_PACKED_RGB_to_PLANAR_RGB_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], alpha); info->shader_tex_names[0] = "tex"; g_free (pixel_order); } static void _PACKED_RGB_to_PACKED_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; if (_is_RGBx (in_format)) { int i; char input_alpha_channel = 'a'; for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) { if (in_format_str[i] == 'X' || in_format_str[i] == 'x') { input_alpha_channel = _index_to_shader_swizzle (i); break; } } alpha = g_strdup_printf ("t.%c = 1.0;", input_alpha_channel); } info->templ = &templ_REORDER; info->frag_body = g_strdup_printf (templ_REORDER_BODY, alpha ? alpha : "", pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "tex"; g_free (alpha); g_free (pixel_order); } static void _RGB_to_RGB (GstGLColorConvert * convert) { GstVideoFormat in_format = GST_VIDEO_INFO_FORMAT (&convert->in_info); GstVideoFormat out_format = GST_VIDEO_INFO_FORMAT (&convert->out_info); if (_is_planar_rgb (in_format)) { if (_is_planar_rgb (out_format)) _PLANAR_RGB_to_PLANAR_RGB (convert); else _PLANAR_RGB_to_PACKED_RGB (convert); } else { if (_is_planar_rgb (out_format)) _PACKED_RGB_to_PLANAR_RGB (convert); else _PACKED_RGB_to_PACKED_RGB (convert); } } 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 apple_ycbcr = gst_gl_context_check_feature (convert->context, "GL_APPLE_ycbcr_422"); gboolean in_tex_rectangular = FALSE; #if GST_GL_HAVE_OPENGL GstMemory *memory = gst_buffer_peek_memory (convert->inbuf, 0); if (gst_is_gl_memory (memory) && (USING_OPENGL (convert->context) || USING_OPENGL3 (convert->context))) { in_tex_rectangular = convert->priv->from_texture_target == GST_GL_TEXTURE_TARGET_RECTANGLE; } #endif info->out_n_textures = 1; if (in_tex_rectangular && apple_ycbcr && gst_buffer_n_memory (convert->inbuf) == 1) { /* FIXME: We should probably also check if tex_target actually is using * the Apple YCbCr422 extension. It could also be a normal UYVY texture * with RB or Lum/Alpha */ /* The mangling will change this to the correct texture2DRect, sampler2DRect * for us */ info->templ = &templ_REORDER; info->frag_body = g_strdup_printf (templ_REORDER_BODY, "", pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "tex"; } else { switch (GST_VIDEO_INFO_FORMAT (&convert->in_info)) { case GST_VIDEO_FORMAT_AYUV: info->templ = &templ_AYUV_to_RGB; info->frag_body = g_strdup_printf (templ_AYUV_to_RGB_BODY, "yzw", 'x', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "tex"; break; case GST_VIDEO_FORMAT_VUYA: info->templ = &templ_AYUV_to_RGB; info->frag_body = g_strdup_printf (templ_AYUV_to_RGB_BODY, "zyx", 'w', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "tex"; break; case GST_VIDEO_FORMAT_Y410: case GST_VIDEO_FORMAT_Y412_LE: case GST_VIDEO_FORMAT_Y412_BE: info->templ = &templ_AYUV_to_RGB; info->frag_body = g_strdup_printf (templ_AYUV_to_RGB_BODY, "yxz", 'w', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); 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->templ = &templ_PLANAR_YUV_to_RGB; info->frag_body = g_strdup_printf (templ_PLANAR_YUV_to_RGB_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "Utex"; info->shader_tex_names[2] = "Vtex"; break; case GST_VIDEO_FORMAT_A420: info->templ = &templ_A420_to_RGB; info->frag_body = g_strdup_printf (templ_A420_to_RGB_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "Utex"; info->shader_tex_names[2] = "Vtex"; info->shader_tex_names[3] = "Atex"; break; case GST_VIDEO_FORMAT_YV12: info->templ = &templ_PLANAR_YUV_to_RGB; info->frag_body = g_strdup_printf (templ_PLANAR_YUV_to_RGB_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[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 = convert->priv->in_tex_formats[0] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_YUY2_UYVY_to_RGB; info->frag_body = g_strdup_printf (templ_YUY2_UYVY_to_RGB_BODY, 'r', uv_val, uv_val, 'g', 'a', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; break; } case GST_VIDEO_FORMAT_UYVY: { char y_val = convert->priv->in_tex_formats[0] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_YUY2_UYVY_to_RGB; info->frag_body = g_strdup_printf (templ_YUY2_UYVY_to_RGB_BODY, y_val, 'g', 'g', 'r', 'b', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; break; } case GST_VIDEO_FORMAT_Y210: case GST_VIDEO_FORMAT_Y212_LE: case GST_VIDEO_FORMAT_Y212_BE: { info->templ = &templ_YUY2_UYVY_to_RGB; info->frag_body = g_strdup_printf (templ_YUY2_UYVY_to_RGB_BODY, 'r', 'g', 'g', 'g', 'a', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; break; } case GST_VIDEO_FORMAT_NV12: case GST_VIDEO_FORMAT_NV16: { char val2 = convert->priv->in_tex_formats[1] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_SEMI_PLANAR_to_RGB; info->frag_body = g_strdup_printf (templ_SEMI_PLANAR_to_RGB_BODY, 'r', val2, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "UVtex"; break; } case GST_VIDEO_FORMAT_AV12: { info->templ = &templ_AV12_to_RGB; info->frag_body = g_strdup_printf (templ_AV12_to_RGB_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "UVtex"; info->shader_tex_names[2] = "Atex"; break; } case GST_VIDEO_FORMAT_NV21: case GST_VIDEO_FORMAT_NV61: { char val2 = convert->priv->in_tex_formats[1] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_SEMI_PLANAR_to_RGB; info->frag_body = g_strdup_printf (templ_SEMI_PLANAR_to_RGB_BODY, val2, 'r', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "UVtex"; break; } case GST_VIDEO_FORMAT_P010_10LE: case GST_VIDEO_FORMAT_P010_10BE: case GST_VIDEO_FORMAT_P012_LE: case GST_VIDEO_FORMAT_P012_BE: case GST_VIDEO_FORMAT_P016_LE: case GST_VIDEO_FORMAT_P016_BE: { info->templ = &templ_SEMI_PLANAR_to_RGB; info->frag_body = g_strdup_printf (templ_SEMI_PLANAR_to_RGB_BODY, 'r', 'g', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "UVtex"; break; } case GST_VIDEO_FORMAT_NV12_16L32S: { char val2 = convert->priv->in_tex_formats[1] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_TILED_SEMI_PLANAR_to_RGB; info->frag_body = g_strdup_printf (templ_TILED_SEMI_PLANAR_to_RGB_BODY, 16, 32, 8, 16, 'r', val2, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "UVtex"; break; } case GST_VIDEO_FORMAT_NV12_4L4: { char val2 = convert->priv->in_tex_formats[1] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_TILED_SEMI_PLANAR_to_RGB; info->frag_body = g_strdup_printf (templ_TILED_SEMI_PLANAR_to_RGB_BODY, 4, 4, 2, 4, 'r', val2, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); info->shader_tex_names[0] = "Ytex"; info->shader_tex_names[1] = "UVtex"; 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); GstVideoFormat out_format = GST_VIDEO_INFO_FORMAT (&convert->out_info); gchar *pixel_order = _RGB_pixel_order (in_format_str, "rgba"); const gchar *alpha; info->frag_prog = NULL; info->shader_tex_names[0] = "tex"; switch (out_format) { case GST_VIDEO_FORMAT_AYUV: alpha = _is_RGBx (in_format) ? "1.0" : "texel.a"; info->templ = &templ_RGB_to_AYUV; info->frag_body = g_strdup_printf (templ_RGB_to_AYUV_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], "yzw", 'x', alpha); info->out_n_textures = 1; break; case GST_VIDEO_FORMAT_VUYA: alpha = _is_RGBx (in_format) ? "1.0" : "texel.a"; info->templ = &templ_RGB_to_AYUV; info->frag_body = g_strdup_printf (templ_RGB_to_AYUV_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], "zyx", 'w', alpha); info->out_n_textures = 1; break; case GST_VIDEO_FORMAT_Y410: case GST_VIDEO_FORMAT_Y412_LE: case GST_VIDEO_FORMAT_Y412_BE: alpha = _is_RGBx (in_format) ? "1.0" : "texel.a"; info->templ = &templ_RGB_to_AYUV; info->frag_body = g_strdup_printf (templ_RGB_to_AYUV_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], "yxz", 'w', 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: case GST_VIDEO_FORMAT_A420: info->templ = &templ_RGB_to_PLANAR_YUV; if (out_format == GST_VIDEO_FORMAT_A420) { alpha = "gl_FragData[3] = vec4(texel.a, 0.0, 0.0, 1.0);\n"; info->out_n_textures = 4; } else { alpha = ""; info->out_n_textures = 3; } info->frag_body = g_strdup_printf (templ_RGB_to_PLANAR_YUV_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], alpha); if (out_format == GST_VIDEO_FORMAT_Y444) { info->chroma_sampling[0] = info->chroma_sampling[1] = 1.0f; } else if (out_format == GST_VIDEO_FORMAT_Y42B) { info->chroma_sampling[0] = 2.0f; info->chroma_sampling[1] = 1.0f; } else if (out_format == GST_VIDEO_FORMAT_Y41B) { info->chroma_sampling[0] = 4.0f; info->chroma_sampling[1] = 1.0f; } else { info->chroma_sampling[0] = info->chroma_sampling[1] = 2.0f; } break; case GST_VIDEO_FORMAT_YUY2: case GST_VIDEO_FORMAT_Y210: case GST_VIDEO_FORMAT_Y212_LE: case GST_VIDEO_FORMAT_Y212_BE: info->templ = &templ_RGB_to_YUY2_UYVY; info->frag_body = g_strdup_printf (templ_RGB_to_YUY2_UYVY_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], 'x', 'y', 'x', 'z'); info->out_n_textures = 1; break; case GST_VIDEO_FORMAT_UYVY: info->templ = &templ_RGB_to_YUY2_UYVY, info->frag_body = g_strdup_printf (templ_RGB_to_YUY2_UYVY_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], 'y', 'x', 'z', 'x'); info->out_n_textures = 1; break; case GST_VIDEO_FORMAT_NV12: case GST_VIDEO_FORMAT_NV16: info->templ = &templ_RGB_to_SEMI_PLANAR_YUV, info->frag_body = g_strdup_printf (templ_RGB_to_SEMI_PLANAR_YUV_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], 'y', 'z'); info->out_n_textures = 2; if (out_format == GST_VIDEO_FORMAT_NV16) { info->chroma_sampling[0] = 2.0f; info->chroma_sampling[1] = 1.0f; } else { info->chroma_sampling[0] = info->chroma_sampling[1] = 2.0f; } break; case GST_VIDEO_FORMAT_AV12: info->templ = &templ_RGB_to_AV12, info->frag_body = g_strdup_printf (templ_RGB_to_AV12_BODY, 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; info->chroma_sampling[0] = info->chroma_sampling[1] = 2.0f; break; case GST_VIDEO_FORMAT_NV21: case GST_VIDEO_FORMAT_NV61: info->templ = &templ_RGB_to_SEMI_PLANAR_YUV, info->frag_body = g_strdup_printf (templ_RGB_to_SEMI_PLANAR_YUV_BODY, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3], 'z', 'y'); info->out_n_textures = 2; if (out_format == GST_VIDEO_FORMAT_NV61) { info->chroma_sampling[0] = 2.0f; info->chroma_sampling[1] = 1.0f; } else { info->chroma_sampling[0] = info->chroma_sampling[1] = 2.0f; } 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->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->templ = &templ_REORDER; info->frag_body = g_strdup_printf (templ_REORDER_BODY, alpha ? alpha : "", pixel_order[0], pixel_order[0], pixel_order[0], pixel_order[3]); break; default: break; } g_free (alpha); g_free (pixel_order); } 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); info->shader_tex_names[0] = "tex"; switch (GST_VIDEO_INFO_FORMAT (&convert->in_info)) { case GST_VIDEO_FORMAT_GRAY8: info->templ = &templ_REORDER; info->frag_body = g_strdup_printf (templ_REORDER_BODY, "", pixel_order[0], pixel_order[0], pixel_order[0], pixel_order[3]); break; case GST_VIDEO_FORMAT_GRAY16_LE: { char val2 = convert->priv->in_tex_formats[0] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_COMPOSE; info->frag_body = g_strdup_printf (templ_COMPOSE_BODY, val2, 'r', pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); break; } case GST_VIDEO_FORMAT_GRAY16_BE: { char val2 = convert->priv->in_tex_formats[0] == GST_GL_RG ? 'g' : 'a'; info->templ = &templ_COMPOSE; info->frag_body = g_strdup_printf (templ_COMPOSE_BODY, 'r', val2, pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]); break; } default: break; } g_free (pixel_order); } static void _bind_buffer (GstGLColorConvert * convert) { const GstGLFuncs *gl = convert->context->gl_vtable; gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, convert->priv->vbo_indices); gl->BindBuffer (GL_ARRAY_BUFFER, convert->priv->vertex_buffer); /* Load the vertex position */ gl->VertexAttribPointer (convert->priv->attr_position, 3, GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), (void *) 0); gl->EnableVertexAttribArray (convert->priv->attr_position); if (convert->priv->attr_texture != -1) { /* Load the texture coordinate */ gl->VertexAttribPointer (convert->priv->attr_texture, 2, GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat))); gl->EnableVertexAttribArray (convert->priv->attr_texture); } } static void _unbind_buffer (GstGLColorConvert * convert) { const GstGLFuncs *gl = convert->context->gl_vtable; gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0); gl->DisableVertexAttribArray (convert->priv->attr_position); if (convert->priv->attr_texture != -1) { gl->BindBuffer (GL_ARRAY_BUFFER, 0); gl->DisableVertexAttribArray (convert->priv->attr_texture); } } static GstGLShader * _create_shader (GstGLColorConvert * convert) { struct ConvertInfo *info = &convert->priv->convert_info; GString *str = g_string_new (NULL); GstGLShader *ret = NULL; GstGLSLStage *stage; GstGLSLVersion version; GstGLSLProfile profile; gchar *version_str, *tmp, *tmp1; const gchar *strings[3]; GError *error = NULL; int i; ret = gst_gl_shader_new (convert->context); tmp = _gst_glsl_mangle_shader (text_vertex_shader, GL_VERTEX_SHADER, info->templ->target, convert->priv->from_texture_target, convert->context, &version, &profile); tmp1 = gst_glsl_version_profile_to_string (version, profile); version_str = g_strdup_printf ("#version %s\n", tmp1); g_free (tmp1); strings[0] = version_str; strings[1] = tmp; if (!(stage = gst_glsl_stage_new_with_strings (convert->context, GL_VERTEX_SHADER, version, profile, 2, strings))) { GST_ERROR_OBJECT (convert, "Failed to create vertex stage"); g_free (version_str); g_free (tmp); gst_object_unref (ret); return NULL; } g_free (tmp); if (!gst_gl_shader_compile_attach_stage (ret, stage, &error)) { GST_ERROR_OBJECT (convert, "Failed to compile vertex shader %s", error->message); g_clear_error (&error); g_free (version_str); gst_object_unref (stage); gst_object_unref (ret); return NULL; } if (info->templ->extensions) g_string_append (str, info->templ->extensions); if (convert->priv->from_texture_target == GST_GL_TEXTURE_TARGET_EXTERNAL_OES && info->templ->target != GST_GL_TEXTURE_TARGET_EXTERNAL_OES) g_string_append (str, glsl_OES_extension_string); g_string_append (str, gst_gl_shader_string_get_highest_precision (convert->context, version, profile)); if (info->templ->uniforms) g_string_append (str, info->templ->uniforms); g_string_append_c (str, '\n'); /* GL 3.3+ and GL ES 3.x */ if ((profile == GST_GLSL_PROFILE_CORE && version >= GST_GLSL_VERSION_330) || (profile == GST_GLSL_PROFILE_ES && version >= GST_GLSL_VERSION_300)) { if (info->out_n_textures > 1) { gint i; for (i = 0; i < info->out_n_textures; i++) { g_string_append_printf (str, "layout(location = %d) out vec4 fragColor_%d;\n", i, i); } } else { g_string_append (str, "layout (location = 0) out vec4 fragColor;\n"); } } else if (profile == GST_GLSL_PROFILE_CORE && version >= GST_GLSL_VERSION_150) { /* no layout specifiers, use glBindFragDataLocation instead */ if (info->out_n_textures > 1) { gint i; for (i = 0; i < info->out_n_textures; i++) { gchar *var_name = g_strdup_printf ("fragColor_%d", i); g_string_append_printf (str, "out vec4 %s;\n", var_name); gst_gl_shader_bind_frag_data_location (ret, i, var_name); g_free (var_name); } } else { g_string_append (str, "out vec4 fragColor;\n"); gst_gl_shader_bind_frag_data_location (ret, 0, "fragColor"); } } for (i = 0; i < MAX_FUNCTIONS; i++) { if (info->templ->functions[i] == NULL) break; g_string_append_c (str, '\n'); g_string_append (str, info->templ->functions[i]); g_string_append_c (str, '\n'); } { const gchar *varying = NULL; if ((profile == GST_GLSL_PROFILE_ES && version >= GST_GLSL_VERSION_300) || (profile == GST_GLSL_PROFILE_CORE && version >= GST_GLSL_VERSION_150)) { varying = "in"; } else { varying = "varying"; } g_string_append_printf (str, "\n%s vec2 v_texcoord;\nvoid main (void) {\n", varying); } if (info->frag_body) { g_string_append (str, "vec2 texcoord;\n"); if (convert->priv->from_texture_target == GST_GL_TEXTURE_TARGET_RECTANGLE && info->templ->target != GST_GL_TEXTURE_TARGET_RECTANGLE) { g_string_append (str, "texcoord = v_texcoord * vec2 (width, height);\n"); } else { g_string_append (str, "texcoord = v_texcoord;\n"); } g_string_append (str, info->frag_body); } g_string_append (str, "\n}"); tmp = g_string_free (str, FALSE); info->frag_prog = _gst_glsl_mangle_shader (tmp, GL_FRAGMENT_SHADER, info->templ->target, convert->priv->from_texture_target, convert->context, &version, &profile); g_free (tmp); strings[1] = info->frag_prog; if (!(stage = gst_glsl_stage_new_with_strings (convert->context, GL_FRAGMENT_SHADER, version, profile, 2, strings))) { GST_ERROR_OBJECT (convert, "Failed to create fragment stage"); g_free (info->frag_prog); info->frag_prog = NULL; g_free (version_str); gst_object_unref (ret); return NULL; } g_free (version_str); if (!gst_gl_shader_compile_attach_stage (ret, stage, &error)) { GST_ERROR_OBJECT (convert, "Failed to compile fragment shader %s", error->message); g_clear_error (&error); g_free (info->frag_prog); info->frag_prog = NULL; gst_object_unref (stage); gst_object_unref (ret); return NULL; } if (!gst_gl_shader_link (ret, &error)) { GST_ERROR_OBJECT (convert, "Failed to link shader %s", error->message); g_clear_error (&error); g_free (info->frag_prog); info->frag_prog = NULL; gst_object_unref (ret); return NULL; } return ret; } /* Called in the gl thread */ static gboolean _init_convert (GstGLColorConvert * convert) { GstGLFuncs *gl; 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_ERROR_OBJECT (convert, "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_body || info->in_n_textures == 0 || info->out_n_textures == 0) goto unhandled_format; /* multiple draw targets not supported on GLES2... */ if (info->out_n_textures > 1 && !gl->DrawBuffers) { GST_ERROR ("Conversion requires output to multiple draw buffers"); goto incompatible_api; } /* Requires reading from a RG/LA framebuffer... */ if (USING_GLES2 (convert->context) && !USING_GLES3 (convert->context) && (GST_VIDEO_INFO_FORMAT (&convert->out_info) == GST_VIDEO_FORMAT_YUY2 || GST_VIDEO_INFO_FORMAT (&convert->out_info) == GST_VIDEO_FORMAT_UYVY)) { GST_ERROR ("Conversion requires reading with an unsupported format"); goto incompatible_api; } /* Requires texelFetch() function... */ if (!(USING_GLES3 (convert->context) || USING_OPENGL30 (convert->context)) && GST_VIDEO_FORMAT_INFO_IS_TILED (convert->in_info.finfo)) { GST_ERROR ("Conversion requires texelFetch() function available since " "GLSL 1.30"); goto incompatible_api; } if (!(convert->shader = _create_shader (convert))) goto error; convert->priv->attr_position = gst_gl_shader_get_attribute_location (convert->shader, "a_position"); if (!GST_VIDEO_FORMAT_INFO_IS_TILED (convert->in_info.finfo)) convert->priv->attr_texture = gst_gl_shader_get_attribute_location (convert->shader, "a_texcoord"); else convert->priv->attr_texture = -1; 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); } if (GST_VIDEO_FORMAT_INFO_IS_TILED (convert->in_info.finfo)) { guint tile_width, tile_height; gsize stride; gfloat width, height; stride = GST_VIDEO_INFO_PLANE_STRIDE (&convert->in_info, 0); tile_width = GST_VIDEO_FORMAT_INFO_TILE_WIDTH (convert->in_info.finfo, 0); tile_height = GST_VIDEO_FORMAT_INFO_TILE_HEIGHT (convert->in_info.finfo, 0); width = GST_VIDEO_TILE_X_TILES (stride) * tile_width; height = GST_VIDEO_TILE_Y_TILES (stride) * tile_height; gst_gl_shader_set_uniform_1f (convert->shader, "width", width); gst_gl_shader_set_uniform_1f (convert->shader, "height", height); } else { gst_gl_shader_set_uniform_1f (convert->shader, "width", GST_VIDEO_INFO_WIDTH (&convert->in_info)); gst_gl_shader_set_uniform_1f (convert->shader, "height", GST_VIDEO_INFO_HEIGHT (&convert->in_info)); } if (convert->priv->from_texture_target == GST_GL_TEXTURE_TARGET_RECTANGLE) { gst_gl_shader_set_uniform_1f (convert->shader, "poffset_x", 1.); gst_gl_shader_set_uniform_1f (convert->shader, "poffset_y", 1.); } else { gst_gl_shader_set_uniform_1f (convert->shader, "poffset_x", 1. / (gfloat) GST_VIDEO_INFO_WIDTH (&convert->in_info)); gst_gl_shader_set_uniform_1f (convert->shader, "poffset_y", 1. / (gfloat) GST_VIDEO_INFO_HEIGHT (&convert->in_info)); } if (info->chroma_sampling[0] > 0.0f && info->chroma_sampling[1] > 0.0f) { gst_gl_shader_set_uniform_2fv (convert->shader, "chroma_sampling", 1, info->chroma_sampling); } gst_gl_context_clear_shader (convert->context); if (convert->fbo == NULL && !_init_convert_fbo (convert)) { goto error; } if (!convert->priv->vertex_buffer) { if (gl->GenVertexArrays) { gl->GenVertexArrays (1, &convert->priv->vao); gl->BindVertexArray (convert->priv->vao); } gl->GenBuffers (1, &convert->priv->vertex_buffer); gl->BindBuffer (GL_ARRAY_BUFFER, convert->priv->vertex_buffer); gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices, GL_STATIC_DRAW); gl->GenBuffers (1, &convert->priv->vbo_indices); gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, convert->priv->vbo_indices); gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices, GL_STATIC_DRAW); if (gl->GenVertexArrays) { _bind_buffer (convert); gl->BindVertexArray (0); } gl->BindBuffer (GL_ARRAY_BUFFER, 0); gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0); } gl->BindTexture (GL_TEXTURE_2D, 0); convert->initted = TRUE; return TRUE; unhandled_format: GST_ERROR_OBJECT (convert, "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_ERROR_OBJECT (convert, "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) { guint out_width, out_height; out_width = GST_VIDEO_INFO_WIDTH (&convert->out_info); out_height = GST_VIDEO_INFO_HEIGHT (&convert->out_info); convert->fbo = gst_gl_framebuffer_new_with_default_depth (convert->context, out_width, out_height); return convert->fbo != NULL; } static gboolean _do_convert_one_view (GstGLContext * context, GstGLColorConvert * convert, guint view_num) { 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; const gint in_plane_offset = view_num * c_info->in_n_textures; const gint out_plane_offset = view_num * c_info->out_n_textures; 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); for (i = 0; i < c_info->in_n_textures; i++) { convert->priv->in_tex[i] = (GstGLMemory *) gst_buffer_peek_memory (convert->inbuf, i + in_plane_offset); if (!gst_is_gl_memory ((GstMemory *) convert->priv->in_tex[i])) { GST_ERROR_OBJECT (convert, "input must be GstGLMemory"); res = FALSE; goto out; } if (convert->context != convert->priv->in_tex[i]->mem.context) { GST_ERROR_OBJECT (convert, "input memory OpenGL context is different. " "we have %" GST_PTR_FORMAT " memory has %" GST_PTR_FORMAT, convert->context, convert->priv->in_tex[i]->mem.context); res = FALSE; goto out; } if (!gst_memory_map ((GstMemory *) convert->priv->in_tex[i], &in_info[i], GST_MAP_READ | GST_MAP_GL)) { GST_ERROR_OBJECT (convert, "failed to map input memory %p", convert->priv->in_tex[i]); 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 + out_plane_offset); gint mem_width, mem_height; if (!gst_is_gl_memory ((GstMemory *) out_tex)) { GST_ERROR_OBJECT (convert, "output must be GstGLMemory"); res = FALSE; goto out; } if (convert->context != out_tex->mem.context) { GST_ERROR_OBJECT (convert, "output memory OpenGL context is different. " "we have %" GST_PTR_FORMAT " memory has %" GST_PTR_FORMAT, convert->context, out_tex->mem.context); res = FALSE; goto out; } mem_width = gst_gl_memory_get_texture_width (out_tex); mem_height = gst_gl_memory_get_texture_height (out_tex); if (out_tex->tex_format == GST_GL_LUMINANCE || out_tex->tex_format == GST_GL_LUMINANCE_ALPHA || out_width != mem_width || out_height != mem_height) { /* Luminance formats are not color renderable */ /* rendering to a framebuffer only renders the intersection of all * the attachments i.e. the smallest attachment size */ if (!convert->priv->out_tex[j]) { GstGLVideoAllocationParams *params; GstGLBaseMemoryAllocator *base_mem_allocator; GstAllocator *allocator; GstVideoInfo temp_info; gst_video_info_set_format (&temp_info, GST_VIDEO_FORMAT_RGBA, out_width, out_height); allocator = gst_allocator_find (GST_GL_MEMORY_ALLOCATOR_NAME); base_mem_allocator = GST_GL_BASE_MEMORY_ALLOCATOR (allocator); params = gst_gl_video_allocation_params_new (context, NULL, &temp_info, 0, NULL, convert->priv->to_texture_target, GST_GL_RGBA); convert->priv->out_tex[j] = (GstGLMemory *) gst_gl_base_memory_alloc (base_mem_allocator, (GstGLAllocationParams *) params); gst_gl_allocation_params_free ((GstGLAllocationParams *) params); gst_object_unref (allocator); } } 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)) { GST_ERROR_OBJECT (convert, "failed to map output memory %p", convert->priv->out_tex[i]); 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 + out_plane_offset); gint mem_width, mem_height; gst_memory_unmap ((GstMemory *) convert->priv->out_tex[j], &out_info[j]); mem_width = gst_gl_memory_get_texture_width (out_tex); mem_height = gst_gl_memory_get_texture_height (out_tex); if (out_tex->tex_format == GST_GL_LUMINANCE || out_tex->tex_format == GST_GL_LUMINANCE_ALPHA || out_width != mem_width || out_height != mem_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_ERROR_OBJECT (convert, "Failed to map intermediate memory"); res = FALSE; continue; } if (!gst_memory_map ((GstMemory *) out_tex, &to_info, GST_MAP_WRITE | GST_MAP_GL)) { GST_ERROR_OBJECT (convert, "Failed to map intermediate memory"); res = FALSE; continue; } gst_gl_memory_copy_into (convert->priv->out_tex[j], out_tex->tex_id, convert->priv->to_texture_target, out_tex->tex_format, mem_width, mem_height); 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 + out_plane_offset); GstMemory *mem2 = gst_buffer_get_memory (convert->outbuf, 2 + out_plane_offset); gst_buffer_replace_memory (convert->outbuf, 1 + out_plane_offset, mem2); gst_buffer_replace_memory (convert->outbuf, 2 + out_plane_offset, mem1); } for (i--; i >= 0; i--) { gst_memory_unmap ((GstMemory *) convert->priv->in_tex[i], &in_info[i]); } return res; } static gboolean foreach_metadata (GstBuffer * inbuf, GstMeta ** meta, gpointer user_data) { CopyMetaData *data = user_data; GstGLColorConvert *convert = data->convert; const GstMetaInfo *info = (*meta)->info; GstBuffer *outbuf = data->outbuf; if (!gst_meta_api_type_has_tag (info->api, _gst_meta_tag_memory) && info->api != gst_video_overlay_composition_meta_api_get_type () && info->api != gst_gl_sync_meta_api_get_type ()) { GstMetaTransformCopy copy_data = { FALSE, 0, -1 }; if (info->transform_func) { GST_TRACE_OBJECT (convert, "copy metadata %s", g_type_name (info->api)); info->transform_func (outbuf, *meta, inbuf, _gst_meta_transform_copy, ©_data); } else { GST_DEBUG_OBJECT (convert, "couldn't copy metadata %s", g_type_name (info->api)); } } return TRUE; } /* Called by the idle function in the gl thread */ void _do_convert (GstGLContext * context, GstGLColorConvert * convert) { GstVideoInfo *in_info = &convert->in_info; struct ConvertInfo *c_info = &convert->priv->convert_info; gboolean res = TRUE; gint views, v; GstGLSyncMeta *sync_meta; GstFlowReturn ret; convert->outbuf = NULL; if (GST_VIDEO_INFO_MULTIVIEW_MODE (in_info) == GST_VIDEO_MULTIVIEW_MODE_SEPARATED) views = GST_VIDEO_INFO_VIEWS (in_info); else views = 1; c_info->in_n_textures = _get_n_textures (GST_VIDEO_INFO_FORMAT (&convert->in_info)); c_info->out_n_textures = _get_n_textures (GST_VIDEO_INFO_FORMAT (&convert->out_info)); { gboolean tex_format_change = FALSE; guint i, v; for (v = 0; v < views; v++) { for (i = 0; i < c_info->in_n_textures; i++) { guint j = v * c_info->in_n_textures + i; GstGLMemory *in_tex = (GstGLMemory *) gst_buffer_peek_memory (convert->inbuf, j); if (!gst_is_gl_memory ((GstMemory *) in_tex)) { GST_ERROR_OBJECT (convert, "input must be GstGLMemory"); convert->priv->result = FALSE; return; } if (j >= GST_VIDEO_MAX_PLANES) /* our arrays aren't that big */ g_assert_not_reached (); if (v > 0 && in_tex->tex_format != convert->priv->in_tex_formats[i]) { GST_ERROR_OBJECT (convert, "Cannot convert textures with " "different types"); convert->priv->result = FALSE; return; } if (convert->priv->in_tex_formats[j] != in_tex->tex_format) tex_format_change = TRUE; convert->priv->in_tex_formats[j] = in_tex->tex_format; } } if (tex_format_change) gst_gl_color_convert_reset_shader (convert); } if (GST_VIDEO_FORMAT_INFO_IS_TILED (convert->in_info.finfo)) { GstVideoMeta *vmeta = gst_buffer_get_video_meta (convert->inbuf); gsize stride; stride = GST_VIDEO_INFO_PLANE_STRIDE (&convert->in_info, 0); if (vmeta && vmeta->stride[0] != stride) { GST_VIDEO_INFO_PLANE_STRIDE (&convert->in_info, 0) = vmeta->stride[0]; gst_gl_color_convert_reset_shader (convert); } } if (!_init_convert (convert)) { convert->priv->result = FALSE; return; } sync_meta = gst_buffer_get_gl_sync_meta (convert->inbuf); if (sync_meta) gst_gl_sync_meta_wait (sync_meta, convert->context); if (!convert->priv->pool) { gboolean ret; /* No pool! */ GstQuery *query = gst_query_new_allocation (convert->priv->out_caps, TRUE); ret = gst_gl_color_convert_decide_allocation (convert, query); gst_query_unref (query); if (!ret) { GST_ERROR_OBJECT (convert, "Failed to choose allocation parameters"); convert->priv->result = FALSE; return; } if (!convert->priv->pool) { GST_ERROR_OBJECT (convert, "Failed to create a buffer pool"); convert->priv->result = FALSE; return; } } if (!convert->priv->pool_started) { if (!gst_buffer_pool_set_active (convert->priv->pool, TRUE)) { GST_ERROR_OBJECT (convert, "Failed to start buffer pool"); convert->priv->result = FALSE; return; } convert->priv->pool_started = TRUE; } ret = gst_buffer_pool_acquire_buffer (convert->priv->pool, &convert->outbuf, NULL); if (ret != GST_FLOW_OK) { GST_ERROR_OBJECT (convert, "Failed to acquire buffer from pool: %s", gst_flow_get_name (ret)); convert->priv->result = FALSE; return; } gst_gl_insert_debug_marker (context, "%s converting from %s to %s", GST_OBJECT_NAME (convert), gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (in_info)), gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (&convert->out_info))); /* Handle all views on input and output one at a time */ for (v = 0; res && v < views; v++) res = _do_convert_one_view (context, convert, v); if (!res) { gst_buffer_unref (convert->outbuf); convert->outbuf = NULL; } if (convert->outbuf) { CopyMetaData data; GstVideoOverlayCompositionMeta *composition_meta; GstGLSyncMeta *sync_meta; if (G_UNLIKELY (!gst_buffer_is_writable (convert->outbuf))) { GST_WARNING_OBJECT (convert, "buffer is not writable at this point, bailing out"); convert->priv->result = FALSE; return; } sync_meta = gst_buffer_add_gl_sync_meta (convert->context, convert->outbuf); if (sync_meta) gst_gl_sync_meta_set_sync_point (sync_meta, convert->context); composition_meta = gst_buffer_get_video_overlay_composition_meta (convert->inbuf); if (composition_meta) { GST_DEBUG ("found video overlay composition meta, applying on output."); gst_buffer_add_video_overlay_composition_meta (convert->outbuf, composition_meta->overlay); } data.convert = convert; data.outbuf = convert->outbuf; gst_buffer_foreach_meta (convert->inbuf, foreach_metadata, &data); } 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; gboolean ret = TRUE; GLenum multipleRT[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 }; gl = context->gl_vtable; gst_gl_framebuffer_bind (convert->fbo); /* attach the texture to the FBO to renderer to */ for (i = 0; i < c_info->out_n_textures; i++) { GstGLBaseMemory *tex = (GstGLBaseMemory *) convert->priv->out_tex[i]; gst_gl_framebuffer_attach (convert->fbo, GL_COLOR_ATTACHMENT0 + i, tex); } if (gl->DrawBuffers) gl->DrawBuffers (c_info->out_n_textures, multipleRT); else if (gl->DrawBuffer) gl->DrawBuffer (GL_COLOR_ATTACHMENT0); gst_gl_framebuffer_get_effective_dimensions (convert->fbo, &out_width, &out_height); gl->Viewport (0, 0, out_width, out_height); gst_gl_shader_use (convert->shader); if (gl->BindVertexArray) gl->BindVertexArray (convert->priv->vao); _bind_buffer (convert); for (i = c_info->in_n_textures - 1; i >= 0; i--) { gchar *scale_name = g_strdup_printf ("tex_scale%u", i); guint gl_target = gst_gl_texture_target_to_gl (convert->priv->from_texture_target); gl->ActiveTexture (GL_TEXTURE0 + i); gl->BindTexture (gl_target, convert->priv->in_tex[i]->tex_id); gl->TexParameteri (gl_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR); gl->TexParameteri (gl_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR); gl->TexParameteri (gl_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); gl->TexParameteri (gl_target, 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, 0); if (gl->BindVertexArray) gl->BindVertexArray (0); else _unbind_buffer (convert); if (gl->DrawBuffer) gl->DrawBuffer (GL_COLOR_ATTACHMENT0); /* we are done with the shader */ gst_gl_context_clear_shader (context); if (!gst_gl_context_check_framebuffer_status (context, GL_FRAMEBUFFER)) ret = FALSE; gst_gl_context_clear_framebuffer (context); return ret; }