diff --git a/MAINTAINERS b/MAINTAINERS
index baead5d270..c816be66ed 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -290,7 +290,6 @@ libavdevice
   iec61883.c                            Georg Lippitsch
   lavfi                                 Stefano Sabatini
   libdc1394.c                           Roman Shaposhnik
-  opengl_enc.c                          Lukasz Marek
   pulse_audio_enc.c                     Lukasz Marek
   v4l2.c                                Giorgio Vazzana
   vfwcap.c                              Ramiro Polla
diff --git a/configure b/configure
index c4eebab14f..d97b9eedcc 100755
--- a/configure
+++ b/configure
@@ -317,7 +317,6 @@ External library support:
   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
   --enable-openal          enable OpenAL 1.1 capture support [no]
   --enable-opencl          enable OpenCL processing [no]
-  --enable-opengl          enable OpenGL rendering [no]
   --enable-openssl         enable openssl, needed for https support
                            if gnutls, libtls or mbedtls is not used [no]
   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
@@ -1917,7 +1916,6 @@ EXTERNAL_LIBRARY_LIST="
     lv2
     mediacodec
     openal
-    opengl
     openssl
     pocketsphinx
     vapoursynth
@@ -2237,7 +2235,6 @@ HEADERS_LIST="
     machine_ioctl_meteor_h
     malloc_h
     opencv2_core_core_c_h
-    OpenGL_gl3_h
     poll_h
     sys_param_h
     sys_resource_h
@@ -3629,8 +3626,6 @@ lavfi_indev_deps="avfilter"
 libcdio_indev_deps="libcdio"
 libdc1394_indev_deps="libdc1394"
 openal_indev_deps="openal"
-opengl_outdev_deps="opengl"
-opengl_outdev_suggest="sdl2"
 oss_indev_deps_any="sys_soundcard_h"
 oss_outdev_deps_any="sys_soundcard_h"
 pulse_indev_deps="libpulse"
@@ -6952,12 +6947,6 @@ enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueN
                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
-enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
-                               check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
-                               check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
-                               check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
-                               die "ERROR: opengl not found."
-                             }
 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
                                { ! enabled cross_compile &&
                                  add_cflags -isystem/opt/vc/include/IL &&
@@ -7708,10 +7697,6 @@ enabled zoompan_filter      && prepend avfilter_deps "swscale"
 
 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
 
-#FIXME
-enabled_any opengl_outdev && enabled sdl2 &&
-    add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
-
 enabled opus_decoder    && prepend avcodec_deps "swresample"
 
 # reorder the items at var $1 to align with the items order at var $2 .
diff --git a/doc/outdevs.texi b/doc/outdevs.texi
index d3b9199463..86c78f31b7 100644
--- a/doc/outdevs.texi
+++ b/doc/outdevs.texi
@@ -301,45 +301,6 @@ ffmpeg -re -i INPUT -c:v rawvideo -pix_fmt bgra -f fbdev /dev/fb0
 
 See also @url{http://linux-fbdev.sourceforge.net/}, and fbset(1).
 
-@section opengl
-OpenGL output device.
-
-To enable this output device you need to configure FFmpeg with @code{--enable-opengl}.
-
-This output device allows one to render to OpenGL context.
-Context may be provided by application or default SDL window is created.
-
-When device renders to external context, application must implement handlers for following messages:
-@code{AV_DEV_TO_APP_CREATE_WINDOW_BUFFER} - create OpenGL context on current thread.
-@code{AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER} - make OpenGL context current.
-@code{AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER} - swap buffers.
-@code{AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER} - destroy OpenGL context.
-Application is also required to inform a device about current resolution by sending @code{AV_APP_TO_DEV_WINDOW_SIZE} message.
-
-@subsection Options
-@table @option
-
-@item background
-Set background color. Black is a default.
-@item no_window
-Disables default SDL window when set to non-zero value.
-Application must provide OpenGL context and both @code{window_size_cb} and @code{window_swap_buffers_cb} callbacks when set.
-@item window_title
-Set the SDL window title, if not specified default to the filename specified for the output device.
-Ignored when @option{no_window} is set.
-@item window_size
-Set preferred window size, can be a string of the form widthxheight or a video size abbreviation.
-If not specified it defaults to the size of the input video, downscaled according to the aspect ratio.
-Mostly usable when @option{no_window} is not set.
-
-@end table
-
-@subsection Examples
-Play a file on SDL window using OpenGL rendering:
-@example
-ffmpeg  -i INPUT -f opengl "window title"
-@end example
-
 @section oss
 
 OSS (Open Sound System) output device.
diff --git a/libavdevice/Makefile b/libavdevice/Makefile
index 26b2339ae1..ef07945d5b 100644
--- a/libavdevice/Makefile
+++ b/libavdevice/Makefile
@@ -35,7 +35,6 @@ OBJS-$(CONFIG_JACK_INDEV)                += jack.o timefilter.o
 OBJS-$(CONFIG_KMSGRAB_INDEV)             += kmsgrab.o
 OBJS-$(CONFIG_LAVFI_INDEV)               += lavfi.o
 OBJS-$(CONFIG_OPENAL_INDEV)              += openal-dec.o
-OBJS-$(CONFIG_OPENGL_OUTDEV)             += opengl_enc.o
 OBJS-$(CONFIG_OSS_INDEV)                 += oss_dec.o oss.o
 OBJS-$(CONFIG_OSS_OUTDEV)                += oss_enc.o oss.o
 OBJS-$(CONFIG_PULSE_INDEV)               += pulse_audio_dec.o \
diff --git a/libavdevice/alldevices.c b/libavdevice/alldevices.c
index 9215be7214..d2554d3533 100644
--- a/libavdevice/alldevices.c
+++ b/libavdevice/alldevices.c
@@ -41,7 +41,6 @@ extern const AVInputFormat  ff_jack_demuxer;
 extern const AVInputFormat  ff_kmsgrab_demuxer;
 extern const AVInputFormat  ff_lavfi_demuxer;
 extern const AVInputFormat  ff_openal_demuxer;
-extern const FFOutputFormat ff_opengl_muxer;
 extern const AVInputFormat  ff_oss_demuxer;
 extern const FFOutputFormat ff_oss_muxer;
 extern const AVInputFormat  ff_pulse_demuxer;
diff --git a/libavdevice/opengl_enc.c b/libavdevice/opengl_enc.c
deleted file mode 100644
index b2ac6eb16a..0000000000
--- a/libavdevice/opengl_enc.c
+++ /dev/null
@@ -1,1313 +0,0 @@
-/*
- * Copyright (c) 2014 Lukasz Marek
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-//TODO: support for more formats
-//TODO: support for more systems.
-//TODO: implement X11, Windows, Mac OS native default window. SDL 1.2 doesn't allow to render to custom thread.
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stddef.h>
-
-#include "config.h"
-
-#if HAVE_WINDOWS_H
-#include <windows.h>
-#endif
-#if HAVE_OPENGL_GL3_H
-#include <OpenGL/gl3.h>
-#elif HAVE_ES2_GL_H
-#include <ES2/gl.h>
-#else
-#include <GL/gl.h>
-#include <GL/glext.h>
-#endif
-#if HAVE_GLXGETPROCADDRESS
-#include <GL/glx.h>
-#endif
-
-#if CONFIG_SDL2
-#include <SDL.h>
-#endif
-
-#include "libavutil/common.h"
-#include "libavutil/frame.h"
-#include "libavutil/pixdesc.h"
-#include "libavutil/log.h"
-#include "libavutil/opt.h"
-#include "libavutil/avassert.h"
-#include "libavformat/avformat.h"
-#include "libavformat/internal.h"
-#include "libavformat/mux.h"
-#include "libavdevice/avdevice.h"
-#include "opengl_enc_shaders.h"
-
-#ifndef APIENTRY
-#define APIENTRY
-#endif
-
-/* FF_GL_RED_COMPONENT is used for planar pixel types.
- * Only red component is sampled in shaders.
- * On some platforms GL_RED is not available and GL_LUMINANCE have to be used,
- * but since OpenGL 3.0 GL_LUMINANCE is deprecated.
- * GL_RED produces RGBA = value, 0, 0, 1.
- * GL_LUMINANCE produces RGBA = value, value, value, 1.
- * Note: GL_INTENSITY may also be used which produce RGBA = value, value, value, value. */
-#if defined(GL_RED)
-#define FF_GL_RED_COMPONENT GL_RED
-#elif defined(GL_LUMINANCE)
-#define FF_GL_RED_COMPONENT GL_LUMINANCE
-#else
-#define FF_GL_RED_COMPONENT 0x1903; //GL_RED
-#endif
-
-/* Constants not defined for iOS */
-#define FF_GL_UNSIGNED_BYTE_3_3_2 0x8032
-#define FF_GL_UNSIGNED_BYTE_2_3_3_REV 0x8362
-#define FF_GL_UNSIGNED_SHORT_1_5_5_5_REV 0x8366
-#define FF_GL_UNPACK_ROW_LENGTH          0x0CF2
-
-/* MinGW exposes only OpenGL 1.1 API */
-#define FF_GL_ARRAY_BUFFER                0x8892
-#define FF_GL_ELEMENT_ARRAY_BUFFER        0x8893
-#define FF_GL_STATIC_DRAW                 0x88E4
-#define FF_GL_FRAGMENT_SHADER             0x8B30
-#define FF_GL_VERTEX_SHADER               0x8B31
-#define FF_GL_COMPILE_STATUS              0x8B81
-#define FF_GL_LINK_STATUS                 0x8B82
-#define FF_GL_INFO_LOG_LENGTH             0x8B84
-typedef void   (APIENTRY *FF_PFNGLACTIVETEXTUREPROC) (GLenum texture);
-typedef void   (APIENTRY *FF_PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
-typedef void   (APIENTRY *FF_PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers);
-typedef void   (APIENTRY *FF_PFNGLBUFFERDATAPROC) (GLenum target, ptrdiff_t size, const GLvoid *data, GLenum usage);
-typedef void   (APIENTRY *FF_PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
-typedef GLint  (APIENTRY *FF_PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const char *name);
-typedef void   (APIENTRY *FF_PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
-typedef void   (APIENTRY *FF_PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, uintptr_t pointer);
-typedef GLint  (APIENTRY *FF_PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const char *name);
-typedef void   (APIENTRY *FF_PFNGLUNIFORM1FPROC) (GLint location, GLfloat v0);
-typedef void   (APIENTRY *FF_PFNGLUNIFORM1IPROC) (GLint location, GLint v0);
-typedef void   (APIENTRY *FF_PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
-typedef GLuint (APIENTRY *FF_PFNGLCREATEPROGRAMPROC) (void);
-typedef void   (APIENTRY *FF_PFNGLDELETEPROGRAMPROC) (GLuint program);
-typedef void   (APIENTRY *FF_PFNGLUSEPROGRAMPROC) (GLuint program);
-typedef void   (APIENTRY *FF_PFNGLLINKPROGRAMPROC) (GLuint program);
-typedef void   (APIENTRY *FF_PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params);
-typedef void   (APIENTRY *FF_PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, char *infoLog);
-typedef void   (APIENTRY *FF_PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
-typedef GLuint (APIENTRY *FF_PFNGLCREATESHADERPROC) (GLenum type);
-typedef void   (APIENTRY *FF_PFNGLDELETESHADERPROC) (GLuint shader);
-typedef void   (APIENTRY *FF_PFNGLCOMPILESHADERPROC) (GLuint shader);
-typedef void   (APIENTRY *FF_PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const char* *string, const GLint *length);
-typedef void   (APIENTRY *FF_PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
-typedef void   (APIENTRY *FF_PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, char *infoLog);
-
-typedef struct FFOpenGLFunctions {
-    FF_PFNGLACTIVETEXTUREPROC glActiveTexture;                     //Require GL ARB multitexture
-    FF_PFNGLGENBUFFERSPROC glGenBuffers;                           //Require GL_ARB_vertex_buffer_object
-    FF_PFNGLDELETEBUFFERSPROC glDeleteBuffers;                     //Require GL_ARB_vertex_buffer_object
-    FF_PFNGLBUFFERDATAPROC glBufferData;                           //Require GL_ARB_vertex_buffer_object
-    FF_PFNGLBINDBUFFERPROC glBindBuffer;                           //Require GL_ARB_vertex_buffer_object
-    FF_PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;             //Require GL_ARB_vertex_shader
-    FF_PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray; //Require GL_ARB_vertex_shader
-    FF_PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;         //Require GL_ARB_vertex_shader
-    FF_PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;           //Require GL_ARB_shader_objects
-    FF_PFNGLUNIFORM1FPROC glUniform1f;                             //Require GL_ARB_shader_objects
-    FF_PFNGLUNIFORM1IPROC glUniform1i;                             //Require GL_ARB_shader_objects
-    FF_PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv;               //Require GL_ARB_shader_objects
-    FF_PFNGLCREATEPROGRAMPROC glCreateProgram;                     //Require GL_ARB_shader_objects
-    FF_PFNGLDELETEPROGRAMPROC glDeleteProgram;                     //Require GL_ARB_shader_objects
-    FF_PFNGLUSEPROGRAMPROC glUseProgram;                           //Require GL_ARB_shader_objects
-    FF_PFNGLLINKPROGRAMPROC glLinkProgram;                         //Require GL_ARB_shader_objects
-    FF_PFNGLGETPROGRAMIVPROC glGetProgramiv;                       //Require GL_ARB_shader_objects
-    FF_PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;             //Require GL_ARB_shader_objects
-    FF_PFNGLATTACHSHADERPROC glAttachShader;                       //Require GL_ARB_shader_objects
-    FF_PFNGLCREATESHADERPROC glCreateShader;                       //Require GL_ARB_shader_objects
-    FF_PFNGLDELETESHADERPROC glDeleteShader;                       //Require GL_ARB_shader_objects
-    FF_PFNGLCOMPILESHADERPROC glCompileShader;                     //Require GL_ARB_shader_objects
-    FF_PFNGLSHADERSOURCEPROC glShaderSource;                       //Require GL_ARB_shader_objects
-    FF_PFNGLGETSHADERIVPROC glGetShaderiv;                         //Require GL_ARB_shader_objects
-    FF_PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;               //Require GL_ARB_shader_objects
-} FFOpenGLFunctions;
-
-#define OPENGL_ERROR_CHECK(ctx) \
-{\
-    GLenum err_code; \
-    if ((err_code = glGetError()) != GL_NO_ERROR) { \
-        av_log(ctx, AV_LOG_ERROR, "OpenGL error occurred in '%s', line %d: %d\n", __func__, __LINE__, err_code); \
-        goto fail; \
-    } \
-}\
-
-typedef struct OpenGLVertexInfo
-{
-    float x, y, z;    ///<Position
-    float s0, t0;     ///<Texture coords
-} OpenGLVertexInfo;
-
-/* defines 2 triangles to display */
-static const GLushort g_index[6] =
-{
-    0, 1, 2,
-    0, 3, 2,
-};
-
-typedef struct OpenGLContext {
-    AVClass *class;                    ///< class for private options
-
-#if CONFIG_SDL2
-    SDL_Window *window;
-    SDL_GLContext glcontext;
-#endif
-    FFOpenGLFunctions glprocs;
-
-    int inited;                        ///< Set to 1 when write_header was successfully called.
-    uint8_t background[4];             ///< Background color
-    int no_window;                     ///< 0 for create default window
-    char *window_title;                ///< Title of the window
-
-    /* OpenGL implementation limits */
-    GLint max_texture_size;            ///< Maximum texture size
-    GLint max_viewport_width;          ///< Maximum viewport size
-    GLint max_viewport_height;         ///< Maximum viewport size
-    int non_pow_2_textures;            ///< 1 when non power of 2 textures are supported
-    int unpack_subimage;               ///< 1 when GL_EXT_unpack_subimage is available
-
-    /* Current OpenGL configuration */
-    GLuint program;                    ///< Shader program
-    GLuint vertex_shader;              ///< Vertex shader
-    GLuint fragment_shader;            ///< Fragment shader for current pix_pmt
-    GLuint texture_name[4];            ///< Textures' IDs
-    GLuint index_buffer;               ///< Index buffer
-    GLuint vertex_buffer;              ///< Vertex buffer
-    OpenGLVertexInfo vertex[4];        ///< VBO
-    GLint projection_matrix_location;  ///< Uniforms' locations
-    GLint model_view_matrix_location;
-    GLint color_map_location;
-    GLint chroma_div_w_location;
-    GLint chroma_div_h_location;
-    GLint texture_location[4];
-    GLint position_attrib;             ///< Attibutes' locations
-    GLint texture_coords_attrib;
-
-    GLfloat projection_matrix[16];     ///< Projection matrix
-    GLfloat model_view_matrix[16];     ///< Modev view matrix
-    GLfloat color_map[16];             ///< RGBA color map matrix
-    GLfloat chroma_div_w;              ///< Chroma subsampling w ratio
-    GLfloat chroma_div_h;              ///< Chroma subsampling h ratio
-
-    /* Stream information */
-    GLenum format;
-    GLenum type;
-    int width;                         ///< Stream width
-    int height;                        ///< Stream height
-    enum AVPixelFormat pix_fmt;        ///< Stream pixel format
-    int picture_width;                 ///< Rendered width
-    int picture_height;                ///< Rendered height
-    int window_width;
-    int window_height;
-} OpenGLContext;
-
-static const struct OpenGLFormatDesc {
-    enum AVPixelFormat fixel_format;
-    const char * const * fragment_shader;
-    GLenum format;
-    GLenum type;
-} opengl_format_desc[] = {
-    { AV_PIX_FMT_YUV420P,    &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUV444P,    &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUV422P,    &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUV410P,    &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUV411P,    &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUV440P,    &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUV420P16,  &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_YUV422P16,  &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_YUV444P16,  &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_YUVA420P,   &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUVA444P,   &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUVA422P,   &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_YUVA420P16, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_YUVA422P16, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_YUVA444P16, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_RGB24,      &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_BGR24,      &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_0RGB,       &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_RGB0,       &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_0BGR,       &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_BGR0,       &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_RGB565,     &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, GL_UNSIGNED_SHORT_5_6_5 },
-    { AV_PIX_FMT_BGR565,     &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, GL_UNSIGNED_SHORT_5_6_5 },
-    { AV_PIX_FMT_RGB555,     &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGBA, FF_GL_UNSIGNED_SHORT_1_5_5_5_REV },
-    { AV_PIX_FMT_BGR555,     &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGBA, FF_GL_UNSIGNED_SHORT_1_5_5_5_REV },
-    { AV_PIX_FMT_RGB8,       &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, FF_GL_UNSIGNED_BYTE_3_3_2 },
-    { AV_PIX_FMT_BGR8,       &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, FF_GL_UNSIGNED_BYTE_2_3_3_REV },
-    { AV_PIX_FMT_RGB48,      &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_BGR48,      &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET,  GL_RGB, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_ARGB,       &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_RGBA,       &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_ABGR,       &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_BGRA,       &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_RGBA64,     &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_BGRA64,     &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_GBRP,       &FF_OPENGL_FRAGMENT_SHADER_RGB_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_GBRP16,     &FF_OPENGL_FRAGMENT_SHADER_RGB_PLANAR,  FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_GBRAP,      &FF_OPENGL_FRAGMENT_SHADER_RGBA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_GBRAP16,    &FF_OPENGL_FRAGMENT_SHADER_RGBA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_GRAY8,      &FF_OPENGL_FRAGMENT_SHADER_GRAY,        FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE },
-    { AV_PIX_FMT_GRAY16,     &FF_OPENGL_FRAGMENT_SHADER_GRAY,        FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT },
-    { AV_PIX_FMT_NONE,       NULL }
-};
-
-static av_cold int opengl_prepare_vertex(AVFormatContext *s);
-static int opengl_draw(AVFormatContext *h, void *intput, int repaint, int is_pkt);
-static av_cold int opengl_init_context(OpenGLContext *opengl);
-
-static av_cold void opengl_deinit_context(OpenGLContext *opengl)
-{
-    glDeleteTextures(4, opengl->texture_name);
-    opengl->texture_name[0] = opengl->texture_name[1] =
-    opengl->texture_name[2] = opengl->texture_name[3] = 0;
-    if (opengl->glprocs.glUseProgram)
-        opengl->glprocs.glUseProgram(0);
-    if (opengl->glprocs.glDeleteProgram) {
-        opengl->glprocs.glDeleteProgram(opengl->program);
-        opengl->program = 0;
-    }
-    if (opengl->glprocs.glDeleteShader) {
-        opengl->glprocs.glDeleteShader(opengl->vertex_shader);
-        opengl->glprocs.glDeleteShader(opengl->fragment_shader);
-        opengl->vertex_shader = opengl->fragment_shader = 0;
-    }
-    if (opengl->glprocs.glBindBuffer) {
-        opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, 0);
-        opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, 0);
-    }
-    if (opengl->glprocs.glDeleteBuffers) {
-        opengl->glprocs.glDeleteBuffers(2, &opengl->index_buffer);
-        opengl->vertex_buffer = opengl->index_buffer = 0;
-    }
-}
-
-static int opengl_resize(AVFormatContext *h, int width, int height)
-{
-    int ret = 0;
-    OpenGLContext *opengl = h->priv_data;
-    opengl->window_width = width;
-    opengl->window_height = height;
-    if (opengl->inited) {
-        if (opengl->no_window &&
-            (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0)) < 0) {
-            av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
-            goto end;
-        }
-        if ((ret = opengl_prepare_vertex(h)) < 0)
-            goto end;
-        ret = opengl_draw(h, NULL, 1, 0);
-    }
-  end:
-    return ret;
-}
-
-static int opengl_control_message(AVFormatContext *h, int type, void *data, size_t data_size)
-{
-    OpenGLContext *opengl = h->priv_data;
-    switch(type) {
-    case AV_APP_TO_DEV_WINDOW_SIZE:
-        if (data) {
-            AVDeviceRect *message = data;
-            return opengl_resize(h, message->width, message->height);
-        }
-        return AVERROR(EINVAL);
-    case AV_APP_TO_DEV_WINDOW_REPAINT:
-        return opengl_resize(h, opengl->window_width, opengl->window_height);
-    }
-    return AVERROR(ENOSYS);
-}
-
-#if CONFIG_SDL2
-static int opengl_sdl_process_events(AVFormatContext *h)
-{
-    OpenGLContext *opengl = h->priv_data;
-    AVDeviceRect message;
-    SDL_Event event;
-    SDL_PumpEvents();
-    while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT) > 0) {
-        switch (event.type) {
-        case SDL_QUIT:
-            return AVERROR(EIO);
-        case SDL_KEYDOWN:
-            switch (event.key.keysym.sym) {
-            case SDLK_ESCAPE:
-            case SDLK_q:
-                return AVERROR(EIO);
-            }
-            return 0;
-        case SDL_WINDOWEVENT:
-            switch(event.window.event) {
-            case SDL_WINDOWEVENT_RESIZED:
-            case SDL_WINDOWEVENT_SIZE_CHANGED:
-                SDL_GL_GetDrawableSize(opengl->window, &message.width, &message.height);
-                return opengl_control_message(h, AV_APP_TO_DEV_WINDOW_SIZE, &message, sizeof(AVDeviceRect));
-            default:
-                break;
-            }
-        }
-    }
-    return 0;
-}
-
-static int av_cold opengl_sdl_create_window(AVFormatContext *h)
-{
-    OpenGLContext *opengl = h->priv_data;
-    AVDeviceRect message;
-    if (SDL_Init(SDL_INIT_VIDEO)) {
-        av_log(opengl, AV_LOG_ERROR, "Unable to initialize SDL: %s\n", SDL_GetError());
-        return AVERROR_EXTERNAL;
-    }
-    opengl->window = SDL_CreateWindow(opengl->window_title,
-                                      SDL_WINDOWPOS_UNDEFINED,
-                                      SDL_WINDOWPOS_UNDEFINED,
-                                      opengl->window_width, opengl->window_height,
-                                      SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL);
-    if (!opengl->window) {
-        av_log(opengl, AV_LOG_ERROR, "Unable to create default window: %s\n", SDL_GetError());
-        return AVERROR_EXTERNAL;
-    }
-    opengl->glcontext = SDL_GL_CreateContext(opengl->window);
-    if (!opengl->glcontext) {
-        av_log(opengl, AV_LOG_ERROR, "Unable to create OpenGL context on default window: %s\n", SDL_GetError());
-        return AVERROR_EXTERNAL;
-    }
-    SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
-    SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
-    SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
-    SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
-    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
-    av_log(opengl, AV_LOG_INFO, "SDL driver: '%s'.\n", SDL_GetCurrentVideoDriver());
-    SDL_GL_GetDrawableSize(opengl->window, &message.width, &message.height);
-    return opengl_control_message(h, AV_APP_TO_DEV_WINDOW_SIZE, &message, sizeof(AVDeviceRect));
-}
-
-static int av_cold opengl_sdl_load_procedures(OpenGLContext *opengl)
-{
-    FFOpenGLFunctions *procs = &opengl->glprocs;
-
-#define LOAD_OPENGL_FUN(name, type) \
-    procs->name = (type)SDL_GL_GetProcAddress(#name); \
-    if (!procs->name) { \
-        av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \
-        return AVERROR(ENOSYS); \
-    }
-
-    LOAD_OPENGL_FUN(glActiveTexture, FF_PFNGLACTIVETEXTUREPROC)
-    LOAD_OPENGL_FUN(glGenBuffers, FF_PFNGLGENBUFFERSPROC)
-    LOAD_OPENGL_FUN(glDeleteBuffers, FF_PFNGLDELETEBUFFERSPROC)
-    LOAD_OPENGL_FUN(glBufferData, FF_PFNGLBUFFERDATAPROC)
-    LOAD_OPENGL_FUN(glBindBuffer, FF_PFNGLBINDBUFFERPROC)
-    LOAD_OPENGL_FUN(glGetAttribLocation, FF_PFNGLGETATTRIBLOCATIONPROC)
-    LOAD_OPENGL_FUN(glGetUniformLocation, FF_PFNGLGETUNIFORMLOCATIONPROC)
-    LOAD_OPENGL_FUN(glUniform1f, FF_PFNGLUNIFORM1FPROC)
-    LOAD_OPENGL_FUN(glUniform1i, FF_PFNGLUNIFORM1IPROC)
-    LOAD_OPENGL_FUN(glUniformMatrix4fv, FF_PFNGLUNIFORMMATRIX4FVPROC)
-    LOAD_OPENGL_FUN(glCreateProgram, FF_PFNGLCREATEPROGRAMPROC)
-    LOAD_OPENGL_FUN(glDeleteProgram, FF_PFNGLDELETEPROGRAMPROC)
-    LOAD_OPENGL_FUN(glUseProgram, FF_PFNGLUSEPROGRAMPROC)
-    LOAD_OPENGL_FUN(glLinkProgram, FF_PFNGLLINKPROGRAMPROC)
-    LOAD_OPENGL_FUN(glGetProgramiv, FF_PFNGLGETPROGRAMIVPROC)
-    LOAD_OPENGL_FUN(glGetProgramInfoLog, FF_PFNGLGETPROGRAMINFOLOGPROC)
-    LOAD_OPENGL_FUN(glAttachShader, FF_PFNGLATTACHSHADERPROC)
-    LOAD_OPENGL_FUN(glCreateShader, FF_PFNGLCREATESHADERPROC)
-    LOAD_OPENGL_FUN(glDeleteShader, FF_PFNGLDELETESHADERPROC)
-    LOAD_OPENGL_FUN(glCompileShader, FF_PFNGLCOMPILESHADERPROC)
-    LOAD_OPENGL_FUN(glShaderSource, FF_PFNGLSHADERSOURCEPROC)
-    LOAD_OPENGL_FUN(glGetShaderiv, FF_PFNGLGETSHADERIVPROC)
-    LOAD_OPENGL_FUN(glGetShaderInfoLog, FF_PFNGLGETSHADERINFOLOGPROC)
-    LOAD_OPENGL_FUN(glEnableVertexAttribArray, FF_PFNGLENABLEVERTEXATTRIBARRAYPROC)
-    LOAD_OPENGL_FUN(glVertexAttribPointer, FF_PFNGLVERTEXATTRIBPOINTERPROC)
-
-    return 0;
-
-#undef LOAD_OPENGL_FUN
-}
-#endif /* CONFIG_SDL2 */
-
-#if defined(__APPLE__)
-static int av_cold opengl_load_procedures(OpenGLContext *opengl)
-{
-    FFOpenGLFunctions *procs = &opengl->glprocs;
-
-#if CONFIG_SDL2
-    if (!opengl->no_window)
-        return opengl_sdl_load_procedures(opengl);
-#endif
-
-    procs->glActiveTexture = glActiveTexture;
-    procs->glGenBuffers = glGenBuffers;
-    procs->glDeleteBuffers = glDeleteBuffers;
-    procs->glBufferData = glBufferData;
-    procs->glBindBuffer = glBindBuffer;
-    procs->glGetAttribLocation = glGetAttribLocation;
-    procs->glGetUniformLocation = glGetUniformLocation;
-    procs->glUniform1f = glUniform1f;
-    procs->glUniform1i = glUniform1i;
-    procs->glUniformMatrix4fv = glUniformMatrix4fv;
-    procs->glCreateProgram = glCreateProgram;
-    procs->glDeleteProgram = glDeleteProgram;
-    procs->glUseProgram = glUseProgram;
-    procs->glLinkProgram = glLinkProgram;
-    procs->glGetProgramiv = glGetProgramiv;
-    procs->glGetProgramInfoLog = glGetProgramInfoLog;
-    procs->glAttachShader = glAttachShader;
-    procs->glCreateShader = glCreateShader;
-    procs->glDeleteShader = glDeleteShader;
-    procs->glCompileShader = glCompileShader;
-    procs->glShaderSource = glShaderSource;
-    procs->glGetShaderiv = glGetShaderiv;
-    procs->glGetShaderInfoLog = glGetShaderInfoLog;
-    procs->glEnableVertexAttribArray = glEnableVertexAttribArray;
-    procs->glVertexAttribPointer = (FF_PFNGLVERTEXATTRIBPOINTERPROC) glVertexAttribPointer;
-    return 0;
-}
-#else
-static int av_cold opengl_load_procedures(OpenGLContext *opengl)
-{
-    FFOpenGLFunctions *procs = &opengl->glprocs;
-
-#if HAVE_GLXGETPROCADDRESS
-#define SelectedGetProcAddress glXGetProcAddress
-#elif HAVE_WGLGETPROCADDRESS
-#define SelectedGetProcAddress wglGetProcAddress
-#endif
-
-#define LOAD_OPENGL_FUN(name, type) \
-    procs->name = (type)SelectedGetProcAddress(#name); \
-    if (!procs->name) { \
-        av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \
-        return AVERROR(ENOSYS); \
-    }
-
-#if CONFIG_SDL2
-    if (!opengl->no_window)
-        return opengl_sdl_load_procedures(opengl);
-#endif
-
-    LOAD_OPENGL_FUN(glActiveTexture, FF_PFNGLACTIVETEXTUREPROC)
-    LOAD_OPENGL_FUN(glGenBuffers, FF_PFNGLGENBUFFERSPROC)
-    LOAD_OPENGL_FUN(glDeleteBuffers, FF_PFNGLDELETEBUFFERSPROC)
-    LOAD_OPENGL_FUN(glBufferData, FF_PFNGLBUFFERDATAPROC)
-    LOAD_OPENGL_FUN(glBindBuffer, FF_PFNGLBINDBUFFERPROC)
-    LOAD_OPENGL_FUN(glGetAttribLocation, FF_PFNGLGETATTRIBLOCATIONPROC)
-    LOAD_OPENGL_FUN(glGetUniformLocation, FF_PFNGLGETUNIFORMLOCATIONPROC)
-    LOAD_OPENGL_FUN(glUniform1f, FF_PFNGLUNIFORM1FPROC)
-    LOAD_OPENGL_FUN(glUniform1i, FF_PFNGLUNIFORM1IPROC)
-    LOAD_OPENGL_FUN(glUniformMatrix4fv, FF_PFNGLUNIFORMMATRIX4FVPROC)
-    LOAD_OPENGL_FUN(glCreateProgram, FF_PFNGLCREATEPROGRAMPROC)
-    LOAD_OPENGL_FUN(glDeleteProgram, FF_PFNGLDELETEPROGRAMPROC)
-    LOAD_OPENGL_FUN(glUseProgram, FF_PFNGLUSEPROGRAMPROC)
-    LOAD_OPENGL_FUN(glLinkProgram, FF_PFNGLLINKPROGRAMPROC)
-    LOAD_OPENGL_FUN(glGetProgramiv, FF_PFNGLGETPROGRAMIVPROC)
-    LOAD_OPENGL_FUN(glGetProgramInfoLog, FF_PFNGLGETPROGRAMINFOLOGPROC)
-    LOAD_OPENGL_FUN(glAttachShader, FF_PFNGLATTACHSHADERPROC)
-    LOAD_OPENGL_FUN(glCreateShader, FF_PFNGLCREATESHADERPROC)
-    LOAD_OPENGL_FUN(glDeleteShader, FF_PFNGLDELETESHADERPROC)
-    LOAD_OPENGL_FUN(glCompileShader, FF_PFNGLCOMPILESHADERPROC)
-    LOAD_OPENGL_FUN(glShaderSource, FF_PFNGLSHADERSOURCEPROC)
-    LOAD_OPENGL_FUN(glGetShaderiv, FF_PFNGLGETSHADERIVPROC)
-    LOAD_OPENGL_FUN(glGetShaderInfoLog, FF_PFNGLGETSHADERINFOLOGPROC)
-    LOAD_OPENGL_FUN(glEnableVertexAttribArray, FF_PFNGLENABLEVERTEXATTRIBARRAYPROC)
-    LOAD_OPENGL_FUN(glVertexAttribPointer, FF_PFNGLVERTEXATTRIBPOINTERPROC)
-
-    return 0;
-
-#undef SelectedGetProcAddress
-#undef LOAD_OPENGL_FUN
-}
-#endif
-
-static void opengl_make_identity(float matrix[16])
-{
-    memset(matrix, 0, 16 * sizeof(float));
-    matrix[0] = matrix[5] = matrix[10] = matrix[15] = 1.0f;
-}
-
-static void opengl_make_ortho(float matrix[16], float left, float right,
-                              float bottom, float top, float nearZ, float farZ)
-{
-    float ral = right + left;
-    float rsl = right - left;
-    float tab = top + bottom;
-    float tsb = top - bottom;
-    float fan = farZ + nearZ;
-    float fsn = farZ - nearZ;
-
-    memset(matrix, 0, 16 * sizeof(float));
-    matrix[0] = 2.0f / rsl;
-    matrix[5] = 2.0f / tsb;
-    matrix[10] = -2.0f / fsn;
-    matrix[12] = -ral / rsl;
-    matrix[13] = -tab / tsb;
-    matrix[14] = -fan / fsn;
-    matrix[15] = 1.0f;
-}
-
-static av_cold int opengl_read_limits(AVFormatContext *h)
-{
-    OpenGLContext *opengl = h->priv_data;
-    static const struct{
-        const char *extension;
-        int major;
-        int minor;
-    } required_extensions[] = {
-        { "GL_ARB_multitexture",         1, 3 },
-        { "GL_ARB_vertex_buffer_object", 1, 5 }, //GLX_ARB_vertex_buffer_object
-        { "GL_ARB_vertex_shader",        2, 0 },
-        { "GL_ARB_fragment_shader",      2, 0 },
-        { "GL_ARB_shader_objects",       2, 0 },
-        { NULL,                          0, 0 }
-    };
-    int i, major, minor;
-    const char *extensions, *version;
-
-    version = glGetString(GL_VERSION);
-    extensions = glGetString(GL_EXTENSIONS);
-    if (!version || !extensions) {
-        av_log(h, AV_LOG_ERROR, "No OpenGL context initialized for the current thread\n");
-        return AVERROR(ENOSYS);
-    }
-
-    av_log(h, AV_LOG_DEBUG, "OpenGL version: %s\n", version);
-    if (sscanf(version, "%d.%d", &major, &minor) != 2)
-        return AVERROR(ENOSYS);
-
-    for (i = 0; required_extensions[i].extension; i++) {
-        if (major < required_extensions[i].major &&
-            (major == required_extensions[i].major && minor < required_extensions[i].minor) &&
-            !strstr(extensions, required_extensions[i].extension)) {
-            av_log(h, AV_LOG_ERROR, "Required extension %s is not supported.\n",
-                   required_extensions[i].extension);
-            av_log(h, AV_LOG_DEBUG, "Supported extensions are: %s\n", extensions);
-            return AVERROR(ENOSYS);
-        }
-    }
-    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &opengl->max_texture_size);
-    glGetIntegerv(GL_MAX_VIEWPORT_DIMS, &opengl->max_viewport_width);
-    opengl->non_pow_2_textures = major >= 2 || strstr(extensions, "GL_ARB_texture_non_power_of_two");
-#if defined(GL_ES_VERSION_2_0)
-    opengl->unpack_subimage = !!strstr(extensions, "GL_EXT_unpack_subimage");
-#else
-    opengl->unpack_subimage = 1;
-#endif
-
-    av_log(h, AV_LOG_DEBUG, "Non Power of 2 textures support: %s\n", opengl->non_pow_2_textures ? "Yes" : "No");
-    av_log(h, AV_LOG_DEBUG, "Unpack Subimage extension support: %s\n", opengl->unpack_subimage ? "Yes" : "No");
-    av_log(h, AV_LOG_DEBUG, "Max texture size: %dx%d\n", opengl->max_texture_size, opengl->max_texture_size);
-    av_log(h, AV_LOG_DEBUG, "Max viewport size: %dx%d\n",
-           opengl->max_viewport_width, opengl->max_viewport_height);
-
-    OPENGL_ERROR_CHECK(opengl);
-    return 0;
-  fail:
-    return AVERROR_EXTERNAL;
-}
-
-static const char* opengl_get_fragment_shader_code(enum AVPixelFormat format)
-{
-    int i;
-    for (i = 0; i < FF_ARRAY_ELEMS(opengl_format_desc); i++) {
-        if (opengl_format_desc[i].fixel_format == format)
-            return *opengl_format_desc[i].fragment_shader;
-    }
-    return NULL;
-}
-
-static int opengl_type_size(GLenum type)
-{
-    switch(type) {
-    case GL_UNSIGNED_SHORT:
-    case FF_GL_UNSIGNED_SHORT_1_5_5_5_REV:
-    case GL_UNSIGNED_SHORT_5_6_5:
-        return 2;
-    case GL_UNSIGNED_BYTE:
-    case FF_GL_UNSIGNED_BYTE_3_3_2:
-    case FF_GL_UNSIGNED_BYTE_2_3_3_REV:
-    default:
-        break;
-    }
-    return 1;
-}
-
-static av_cold void opengl_get_texture_params(OpenGLContext *opengl)
-{
-    int i;
-    for (i = 0; i < FF_ARRAY_ELEMS(opengl_format_desc); i++) {
-        if (opengl_format_desc[i].fixel_format == opengl->pix_fmt) {
-            opengl->format = opengl_format_desc[i].format;
-            opengl->type = opengl_format_desc[i].type;
-            break;
-        }
-    }
-}
-
-static void opengl_compute_display_area(AVFormatContext *s)
-{
-    AVRational sar, dar; /* sample and display aspect ratios */
-    OpenGLContext *opengl = s->priv_data;
-    AVStream *st = s->streams[0];
-    AVCodecParameters *par = st->codecpar;
-
-    /* compute overlay width and height from the codec context information */
-    sar = st->sample_aspect_ratio.num ? st->sample_aspect_ratio : (AVRational){ 1, 1 };
-    dar = av_mul_q(sar, (AVRational){ par->width, par->height });
-
-    /* we suppose the screen has a 1/1 sample aspect ratio */
-    /* fit in the window */
-    if (av_cmp_q(dar, (AVRational){ opengl->window_width, opengl->window_height }) > 0) {
-        /* fit in width */
-        opengl->picture_width = opengl->window_width;
-        opengl->picture_height = av_rescale(opengl->picture_width, dar.den, dar.num);
-    } else {
-        /* fit in height */
-        opengl->picture_height = opengl->window_height;
-        opengl->picture_width = av_rescale(opengl->picture_height, dar.num, dar.den);
-    }
-}
-
-static av_cold void opengl_get_texture_size(OpenGLContext *opengl, int in_width, int in_height,
-                                            int *out_width, int *out_height)
-{
-    if (opengl->non_pow_2_textures) {
-        *out_width = in_width;
-        *out_height = in_height;
-    } else {
-        int max = FFMIN(FFMAX(in_width, in_height), opengl->max_texture_size);
-        unsigned power_of_2 = 1;
-        while (power_of_2 < max)
-            power_of_2 *= 2;
-        *out_height = power_of_2;
-        *out_width = power_of_2;
-        av_log(opengl, AV_LOG_DEBUG, "Texture size calculated from %dx%d into %dx%d\n",
-               in_width, in_height, *out_width, *out_height);
-    }
-}
-
-static av_cold void opengl_fill_color_map(OpenGLContext *opengl)
-{
-    const AVPixFmtDescriptor *desc;
-    int shift;
-    enum AVPixelFormat pix_fmt = opengl->pix_fmt;
-
-    /* We need order of components, not exact position, some minor HACKs here */
-    if (pix_fmt == AV_PIX_FMT_RGB565 || pix_fmt == AV_PIX_FMT_BGR555 ||
-        pix_fmt == AV_PIX_FMT_BGR8   || pix_fmt == AV_PIX_FMT_RGB8)
-        pix_fmt = AV_PIX_FMT_RGB24;
-    else if (pix_fmt == AV_PIX_FMT_BGR565 || pix_fmt == AV_PIX_FMT_RGB555)
-        pix_fmt = AV_PIX_FMT_BGR24;
-
-    desc = av_pix_fmt_desc_get(pix_fmt);
-    if (!(desc->flags & AV_PIX_FMT_FLAG_RGB))
-        return;
-
-#define FILL_COMPONENT(i) { \
-        shift = (desc->comp[i].depth - 1) >> 3; \
-        opengl->color_map[(i << 2) + (desc->comp[i].offset >> shift)] = 1.0; \
-    }
-
-    memset(opengl->color_map, 0, sizeof(opengl->color_map));
-    FILL_COMPONENT(0);
-    FILL_COMPONENT(1);
-    FILL_COMPONENT(2);
-    if (desc->flags & AV_PIX_FMT_FLAG_ALPHA)
-        FILL_COMPONENT(3);
-
-#undef FILL_COMPONENT
-}
-
-static av_cold GLuint opengl_load_shader(OpenGLContext *opengl, GLenum type, const char *source)
-{
-    GLuint shader = opengl->glprocs.glCreateShader(type);
-    GLint result;
-    if (!shader) {
-        av_log(opengl, AV_LOG_ERROR, "glCreateShader() failed\n");
-        return 0;
-    }
-    opengl->glprocs.glShaderSource(shader, 1, &source, NULL);
-    opengl->glprocs.glCompileShader(shader);
-
-    opengl->glprocs.glGetShaderiv(shader, FF_GL_COMPILE_STATUS, &result);
-    if (!result) {
-        char *log;
-        opengl->glprocs.glGetShaderiv(shader, FF_GL_INFO_LOG_LENGTH, &result);
-        if (result) {
-            if ((log = av_malloc(result))) {
-                opengl->glprocs.glGetShaderInfoLog(shader, result, NULL, log);
-                av_log(opengl, AV_LOG_ERROR, "Compile error: %s\n", log);
-                av_free(log);
-            }
-        }
-        goto fail;
-    }
-    OPENGL_ERROR_CHECK(opengl);
-    return shader;
-  fail:
-    opengl->glprocs.glDeleteShader(shader);
-    return 0;
-}
-
-static av_cold int opengl_compile_shaders(OpenGLContext *opengl, enum AVPixelFormat pix_fmt)
-{
-    GLint result;
-    const char *fragment_shader_code = opengl_get_fragment_shader_code(pix_fmt);
-
-    if (!fragment_shader_code) {
-        av_log(opengl, AV_LOG_ERROR, "Provided pixel format '%s' is not supported\n",
-               av_get_pix_fmt_name(pix_fmt));
-        return AVERROR(EINVAL);
-    }
-
-    opengl->vertex_shader = opengl_load_shader(opengl, FF_GL_VERTEX_SHADER,
-                                               FF_OPENGL_VERTEX_SHADER);
-    if (!opengl->vertex_shader) {
-        av_log(opengl, AV_LOG_ERROR, "Vertex shader loading failed.\n");
-        goto fail;
-    }
-    opengl->fragment_shader = opengl_load_shader(opengl, FF_GL_FRAGMENT_SHADER,
-                                                 fragment_shader_code);
-    if (!opengl->fragment_shader) {
-        av_log(opengl, AV_LOG_ERROR, "Fragment shader loading failed.\n");
-        goto fail;
-    }
-
-    opengl->program = opengl->glprocs.glCreateProgram();
-    if (!opengl->program)
-        goto fail;
-
-    opengl->glprocs.glAttachShader(opengl->program, opengl->vertex_shader);
-    opengl->glprocs.glAttachShader(opengl->program, opengl->fragment_shader);
-    opengl->glprocs.glLinkProgram(opengl->program);
-
-    opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_LINK_STATUS, &result);
-    if (!result) {
-        char *log;
-        opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_INFO_LOG_LENGTH, &result);
-        if (result) {
-            log = av_malloc(result);
-            if (!log)
-                goto fail;
-            opengl->glprocs.glGetProgramInfoLog(opengl->program, result, NULL, log);
-            av_log(opengl, AV_LOG_ERROR, "Link error: %s\n", log);
-            av_free(log);
-        }
-        goto fail;
-    }
-
-    opengl->position_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_position");
-    opengl->texture_coords_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_textureCoords");
-    opengl->projection_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_projectionMatrix");
-    opengl->model_view_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_modelViewMatrix");
-    opengl->color_map_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_colorMap");
-    opengl->texture_location[0] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture0");
-    opengl->texture_location[1] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture1");
-    opengl->texture_location[2] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture2");
-    opengl->texture_location[3] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture3");
-    opengl->chroma_div_w_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_div_w");
-    opengl->chroma_div_h_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_div_h");
-
-    OPENGL_ERROR_CHECK(opengl);
-    return 0;
-  fail:
-    opengl->glprocs.glDeleteShader(opengl->vertex_shader);
-    opengl->glprocs.glDeleteShader(opengl->fragment_shader);
-    opengl->glprocs.glDeleteProgram(opengl->program);
-    opengl->fragment_shader = opengl->vertex_shader = opengl->program = 0;
-    return AVERROR_EXTERNAL;
-}
-
-static av_cold int opengl_configure_texture(OpenGLContext *opengl, GLuint texture,
-                                            GLsizei width, GLsizei height)
-{
-    if (texture) {
-        int new_width, new_height;
-        opengl_get_texture_size(opengl, width, height, &new_width, &new_height);
-        glBindTexture(GL_TEXTURE_2D, texture);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-        glTexImage2D(GL_TEXTURE_2D, 0, opengl->format, new_width, new_height, 0,
-                     opengl->format, opengl->type, NULL);
-        OPENGL_ERROR_CHECK(NULL);
-    }
-    return 0;
-  fail:
-    return AVERROR_EXTERNAL;
-}
-
-static av_cold int opengl_prepare_vertex(AVFormatContext *s)
-{
-    OpenGLContext *opengl = s->priv_data;
-    int tex_w, tex_h;
-
-    if (opengl->window_width > opengl->max_viewport_width || opengl->window_height > opengl->max_viewport_height) {
-        opengl->window_width = FFMIN(opengl->window_width, opengl->max_viewport_width);
-        opengl->window_height = FFMIN(opengl->window_height, opengl->max_viewport_height);
-        av_log(opengl, AV_LOG_WARNING, "Too big viewport requested, limited to %dx%d", opengl->window_width, opengl->window_height);
-    }
-    glViewport(0, 0, opengl->window_width, opengl->window_height);
-    opengl_make_ortho(opengl->projection_matrix,
-                      - (float)opengl->window_width  / 2.0f, (float)opengl->window_width  / 2.0f,
-                      - (float)opengl->window_height / 2.0f, (float)opengl->window_height / 2.0f,
-                      1.0f, -1.0f);
-    opengl_make_identity(opengl->model_view_matrix);
-
-    opengl_compute_display_area(s);
-
-    opengl->vertex[0].z = opengl->vertex[1].z = opengl->vertex[2].z = opengl->vertex[3].z = 0.0f;
-    opengl->vertex[0].x = opengl->vertex[1].x = - (float)opengl->picture_width / 2.0f;
-    opengl->vertex[2].x = opengl->vertex[3].x =   (float)opengl->picture_width / 2.0f;
-    opengl->vertex[1].y = opengl->vertex[2].y = - (float)opengl->picture_height / 2.0f;
-    opengl->vertex[0].y = opengl->vertex[3].y =   (float)opengl->picture_height / 2.0f;
-
-    opengl_get_texture_size(opengl, opengl->width, opengl->height, &tex_w, &tex_h);
-
-    opengl->vertex[0].s0 = 0.0f;
-    opengl->vertex[0].t0 = 0.0f;
-    opengl->vertex[1].s0 = 0.0f;
-    opengl->vertex[1].t0 = (float)opengl->height / (float)tex_h;
-    opengl->vertex[2].s0 = (float)opengl->width  / (float)tex_w;
-    opengl->vertex[2].t0 = (float)opengl->height / (float)tex_h;
-    opengl->vertex[3].s0 = (float)opengl->width  / (float)tex_w;
-    opengl->vertex[3].t0 = 0.0f;
-
-    opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, opengl->vertex_buffer);
-    opengl->glprocs.glBufferData(FF_GL_ARRAY_BUFFER, sizeof(opengl->vertex), opengl->vertex, FF_GL_STATIC_DRAW);
-    opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, 0);
-    OPENGL_ERROR_CHECK(opengl);
-    return 0;
-  fail:
-    return AVERROR_EXTERNAL;
-}
-
-static int opengl_prepare(OpenGLContext *opengl)
-{
-    int i;
-    opengl->glprocs.glUseProgram(opengl->program);
-    opengl->glprocs.glUniformMatrix4fv(opengl->projection_matrix_location, 1, GL_FALSE, opengl->projection_matrix);
-    opengl->glprocs.glUniformMatrix4fv(opengl->model_view_matrix_location, 1, GL_FALSE, opengl->model_view_matrix);
-    for (i = 0; i < 4; i++)
-        if (opengl->texture_location[i] != -1) {
-            opengl->glprocs.glActiveTexture(GL_TEXTURE0 + i);
-            glBindTexture(GL_TEXTURE_2D, opengl->texture_name[i]);
-            opengl->glprocs.glUniform1i(opengl->texture_location[i], i);
-        }
-    if (opengl->color_map_location != -1)
-        opengl->glprocs.glUniformMatrix4fv(opengl->color_map_location, 1, GL_FALSE, opengl->color_map);
-    if (opengl->chroma_div_h_location != -1)
-        opengl->glprocs.glUniform1f(opengl->chroma_div_h_location, opengl->chroma_div_h);
-    if (opengl->chroma_div_w_location != -1)
-        opengl->glprocs.glUniform1f(opengl->chroma_div_w_location, opengl->chroma_div_w);
-
-    OPENGL_ERROR_CHECK(opengl);
-    return 0;
-  fail:
-    return AVERROR_EXTERNAL;
-}
-
-static int opengl_create_window(AVFormatContext *h)
-{
-    OpenGLContext *opengl = h->priv_data;
-    int ret;
-
-    if (!opengl->no_window) {
-#if CONFIG_SDL2
-        if ((ret = opengl_sdl_create_window(h)) < 0) {
-            av_log(opengl, AV_LOG_ERROR, "Cannot create default SDL window.\n");
-            return ret;
-        }
-#else
-        av_log(opengl, AV_LOG_ERROR, "FFmpeg is compiled without SDL. Cannot create default window.\n");
-        return AVERROR(ENOSYS);
-#endif
-    } else {
-        AVDeviceRect message;
-        message.x = message.y = 0;
-        message.width = opengl->window_width;
-        message.height = opengl->window_height;
-        if ((ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_CREATE_WINDOW_BUFFER,
-                                                       &message , sizeof(message))) < 0) {
-            av_log(opengl, AV_LOG_ERROR, "Application failed to create window buffer.\n");
-            return ret;
-        }
-        if ((ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0)) < 0) {
-            av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
-            return ret;
-        }
-    }
-    return 0;
-}
-
-static int opengl_release_window(AVFormatContext *h)
-{
-    int ret;
-    OpenGLContext *opengl = h->priv_data;
-    if (!opengl->no_window) {
-#if CONFIG_SDL2
-        SDL_GL_DeleteContext(opengl->glcontext);
-        SDL_DestroyWindow(opengl->window);
-        SDL_Quit();
-#endif
-    } else if ((ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER, NULL , 0)) < 0) {
-        av_log(opengl, AV_LOG_ERROR, "Application failed to release window buffer.\n");
-        return ret;
-    }
-    return 0;
-}
-
-static av_cold int opengl_write_trailer(AVFormatContext *h)
-{
-    OpenGLContext *opengl = h->priv_data;
-
-    if (opengl->no_window &&
-        avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0) < 0)
-        av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
-
-    opengl_deinit_context(opengl);
-    opengl_release_window(h);
-
-    return 0;
-}
-
-static av_cold int opengl_init_context(OpenGLContext *opengl)
-{
-    int i, ret;
-    const AVPixFmtDescriptor *desc;
-
-    if ((ret = opengl_compile_shaders(opengl, opengl->pix_fmt)) < 0)
-        goto fail;
-
-    desc = av_pix_fmt_desc_get(opengl->pix_fmt);
-    av_assert0(desc->nb_components > 0 && desc->nb_components <= 4);
-    glGenTextures(desc->nb_components, opengl->texture_name);
-
-    opengl->glprocs.glGenBuffers(2, &opengl->index_buffer);
-    if (!opengl->index_buffer || !opengl->vertex_buffer) {
-        av_log(opengl, AV_LOG_ERROR, "Buffer generation failed.\n");
-        ret = AVERROR_EXTERNAL;
-        goto fail;
-    }
-
-    opengl_configure_texture(opengl, opengl->texture_name[0], opengl->width, opengl->height);
-    if (desc->nb_components > 1) {
-        int has_alpha = desc->flags & AV_PIX_FMT_FLAG_ALPHA;
-        int num_planes = desc->nb_components - (has_alpha ? 1 : 0);
-        if (opengl->non_pow_2_textures) {
-            opengl->chroma_div_w = 1.0f;
-            opengl->chroma_div_h = 1.0f;
-        } else {
-            opengl->chroma_div_w = 1 << desc->log2_chroma_w;
-            opengl->chroma_div_h = 1 << desc->log2_chroma_h;
-        }
-        for (i = 1; i < num_planes; i++)
-            if (opengl->non_pow_2_textures)
-                opengl_configure_texture(opengl, opengl->texture_name[i],
-                        AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w),
-                        AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h));
-            else
-                opengl_configure_texture(opengl, opengl->texture_name[i], opengl->width, opengl->height);
-        if (has_alpha)
-            opengl_configure_texture(opengl, opengl->texture_name[3], opengl->width, opengl->height);
-    }
-
-    opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, opengl->index_buffer);
-    opengl->glprocs.glBufferData(FF_GL_ELEMENT_ARRAY_BUFFER, sizeof(g_index), g_index, FF_GL_STATIC_DRAW);
-    opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, 0);
-
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
-    glClearColor((float)opengl->background[0] / 255.0f, (float)opengl->background[1] / 255.0f,
-                 (float)opengl->background[2] / 255.0f, 1.0f);
-
-    ret = AVERROR_EXTERNAL;
-    OPENGL_ERROR_CHECK(opengl);
-
-    return 0;
-  fail:
-    return ret;
-}
-
-static av_cold int opengl_write_header(AVFormatContext *h)
-{
-    OpenGLContext *opengl = h->priv_data;
-    AVCodecParameters *par = h->streams[0]->codecpar;
-    AVStream *st;
-    int ret;
-
-    if (h->nb_streams != 1 ||
-        par->codec_type != AVMEDIA_TYPE_VIDEO ||
-        (par->codec_id != AV_CODEC_ID_WRAPPED_AVFRAME && par->codec_id != AV_CODEC_ID_RAWVIDEO)) {
-        av_log(opengl, AV_LOG_ERROR, "Only a single raw or wrapped avframe video stream is supported.\n");
-        return AVERROR(EINVAL);
-    }
-    st = h->streams[0];
-    opengl->width = st->codecpar->width;
-    opengl->height = st->codecpar->height;
-    opengl->pix_fmt = st->codecpar->format;
-    if (!opengl->window_width)
-        opengl->window_width = opengl->width;
-    if (!opengl->window_height)
-        opengl->window_height = opengl->height;
-
-    if (!opengl->window_title && !opengl->no_window)
-        opengl->window_title = av_strdup(h->url);
-
-    if ((ret = opengl_create_window(h)))
-        goto fail;
-
-    if ((ret = opengl_read_limits(h)) < 0)
-        goto fail;
-
-    if (opengl->width > opengl->max_texture_size || opengl->height > opengl->max_texture_size) {
-        av_log(opengl, AV_LOG_ERROR, "Too big picture %dx%d, max supported size is %dx%d\n",
-               opengl->width, opengl->height, opengl->max_texture_size, opengl->max_texture_size);
-        ret = AVERROR(EINVAL);
-        goto fail;
-    }
-
-    if ((ret = opengl_load_procedures(opengl)) < 0)
-        goto fail;
-
-    opengl_fill_color_map(opengl);
-    opengl_get_texture_params(opengl);
-
-    if ((ret = opengl_init_context(opengl)) < 0)
-        goto fail;
-
-    if ((ret = opengl_prepare_vertex(h)) < 0)
-        goto fail;
-
-    glClear(GL_COLOR_BUFFER_BIT);
-
-#if CONFIG_SDL2
-    if (!opengl->no_window)
-        SDL_GL_SwapWindow(opengl->window);
-#endif
-    if (opengl->no_window &&
-        (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER, NULL , 0)) < 0) {
-        av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n");
-        goto fail;
-    }
-
-    ret = AVERROR_EXTERNAL;
-    OPENGL_ERROR_CHECK(opengl);
-
-    opengl->inited = 1;
-    return 0;
-
-  fail:
-    opengl_write_trailer(h);
-    return ret;
-}
-
-static uint8_t* opengl_get_plane_pointer(OpenGLContext *opengl, AVPacket *pkt, int comp_index,
-                                         const AVPixFmtDescriptor *desc)
-{
-    uint8_t *data = pkt->data;
-    int wordsize = opengl_type_size(opengl->type);
-    int width_chroma = AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w);
-    int height_chroma = AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h);
-    int plane = desc->comp[comp_index].plane;
-
-    switch(plane) {
-    case 0:
-        break;
-    case 1:
-        data += opengl->width * opengl->height * wordsize;
-        break;
-    case 2:
-        data += opengl->width * opengl->height * wordsize;
-        data += width_chroma * height_chroma * wordsize;
-        break;
-    case 3:
-        data += opengl->width * opengl->height * wordsize;
-        data += 2 * width_chroma * height_chroma * wordsize;
-        break;
-    default:
-        return NULL;
-    }
-    return data;
-}
-
-#define LOAD_TEXTURE_DATA(comp_index, sub)                                                  \
-{                                                                                           \
-    int width = sub ? AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w) : opengl->width;   \
-    int height = sub ? AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h): opengl->height; \
-    uint8_t *data;                                                                          \
-    int plane = desc->comp[comp_index].plane;                                               \
-                                                                                            \
-    glBindTexture(GL_TEXTURE_2D, opengl->texture_name[comp_index]);                         \
-    if (!is_pkt) {                                                                          \
-        GLint length = ((AVFrame *)input)->linesize[plane];                                 \
-        int bytes_per_pixel = opengl_type_size(opengl->type);                               \
-        if (!(desc->flags & AV_PIX_FMT_FLAG_PLANAR))                                        \
-            bytes_per_pixel *= desc->nb_components;                                         \
-        data = ((AVFrame *)input)->data[plane];                                             \
-        if (!(length % bytes_per_pixel) &&                                                  \
-            (opengl->unpack_subimage || ((length / bytes_per_pixel) == width))) {           \
-            length /= bytes_per_pixel;                                                      \
-            if (length != width)                                                            \
-                glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, length);                             \
-            glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,                          \
-                            opengl->format, opengl->type, data);                            \
-            if (length != width)                                                            \
-                glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, 0);                                  \
-        } else {                                                                            \
-            int h;                                                                          \
-            for (h = 0; h < height; h++) {                                                  \
-                glTexSubImage2D(GL_TEXTURE_2D, 0, 0, h, width, 1,                           \
-                                opengl->format, opengl->type, data);                        \
-                data += length;                                                             \
-            }                                                                               \
-        }                                                                                   \
-    } else {                                                                                \
-        data = opengl_get_plane_pointer(opengl, input, comp_index, desc);                   \
-        glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,                              \
-                        opengl->format, opengl->type, data);                                \
-    }                                                                                       \
-}
-
-static int opengl_draw(AVFormatContext *h, void *input, int repaint, int is_pkt)
-{
-    OpenGLContext *opengl = h->priv_data;
-    enum AVPixelFormat pix_fmt = h->streams[0]->codecpar->format;
-    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
-    int ret;
-
-#if CONFIG_SDL2
-    /* At this point, opengl->glcontext implies opengl->glcontext */
-    if (opengl->glcontext)
-        SDL_GL_MakeCurrent(opengl->window, opengl->glcontext);
-
-    if (!opengl->no_window && (ret = opengl_sdl_process_events(h)) < 0)
-        goto fail;
-#endif
-    if (opengl->no_window &&
-        (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0)) < 0) {
-        av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
-        goto fail;
-    }
-
-    glClear(GL_COLOR_BUFFER_BIT);
-
-    if (!repaint) {
-        if (is_pkt)
-            glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-        LOAD_TEXTURE_DATA(0, 0)
-        if (desc->flags & AV_PIX_FMT_FLAG_PLANAR) {
-            LOAD_TEXTURE_DATA(1, 1)
-            LOAD_TEXTURE_DATA(2, 1)
-            if (desc->flags & AV_PIX_FMT_FLAG_ALPHA)
-                LOAD_TEXTURE_DATA(3, 0)
-        }
-    }
-    ret = AVERROR_EXTERNAL;
-    OPENGL_ERROR_CHECK(opengl);
-
-    if ((ret = opengl_prepare(opengl)) < 0)
-        goto fail;
-
-    opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, opengl->vertex_buffer);
-    opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, opengl->index_buffer);
-    opengl->glprocs.glVertexAttribPointer(opengl->position_attrib, 3, GL_FLOAT, GL_FALSE, sizeof(OpenGLVertexInfo), 0);
-    opengl->glprocs.glEnableVertexAttribArray(opengl->position_attrib);
-    opengl->glprocs.glVertexAttribPointer(opengl->texture_coords_attrib, 2, GL_FLOAT, GL_FALSE, sizeof(OpenGLVertexInfo), 12);
-    opengl->glprocs.glEnableVertexAttribArray(opengl->texture_coords_attrib);
-
-    glDrawElements(GL_TRIANGLES, FF_ARRAY_ELEMS(g_index), GL_UNSIGNED_SHORT, 0);
-
-    ret = AVERROR_EXTERNAL;
-    OPENGL_ERROR_CHECK(opengl);
-
-#if CONFIG_SDL2
-    if (!opengl->no_window)
-        SDL_GL_SwapWindow(opengl->window);
-#endif
-    if (opengl->no_window &&
-        (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER, NULL , 0)) < 0) {
-        av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n");
-        goto fail;
-    }
-
-    return 0;
-  fail:
-    return ret;
-}
-
-static int opengl_write_packet(AVFormatContext *h, AVPacket *pkt)
-{
-    AVCodecParameters *par = h->streams[0]->codecpar;
-    if (par->codec_id == AV_CODEC_ID_WRAPPED_AVFRAME) {
-        AVFrame *frame = (AVFrame *)pkt->data;
-        return opengl_draw(h, frame, 0, 0);
-    } else {
-        return opengl_draw(h, pkt, 0, 1);
-    }
-}
-
-static int opengl_write_frame(AVFormatContext *h, int stream_index,
-                              AVFrame **frame, unsigned flags)
-{
-    if ((flags & AV_WRITE_UNCODED_FRAME_QUERY))
-        return 0;
-    return opengl_draw(h, *frame, 0, 0);
-}
-
-#define OFFSET(x) offsetof(OpenGLContext, x)
-#define ENC AV_OPT_FLAG_ENCODING_PARAM
-static const AVOption options[] = {
-    { "background",   "set background color",   OFFSET(background),   AV_OPT_TYPE_COLOR,  {.str = "black"}, 0, 0, ENC },
-    { "no_window",    "disable default window", OFFSET(no_window),    AV_OPT_TYPE_INT,    {.i64 = 0}, INT_MIN, INT_MAX, ENC },
-    { "window_title", "set window title",       OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, ENC },
-    { "window_size",  "set window size",        OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, ENC },
-    { NULL }
-};
-
-static const AVClass opengl_class = {
-    .class_name = "opengl outdev",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-    .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
-};
-
-const FFOutputFormat ff_opengl_muxer = {
-    .p.name              = "opengl",
-    .p.long_name         = NULL_IF_CONFIG_SMALL("OpenGL output"),
-    .p.audio_codec       = AV_CODEC_ID_NONE,
-    .p.video_codec       = AV_CODEC_ID_WRAPPED_AVFRAME,
-    .p.flags             = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
-    .p.priv_class        = &opengl_class,
-    .priv_data_size = sizeof(OpenGLContext),
-    .write_header   = opengl_write_header,
-    .write_packet   = opengl_write_packet,
-    .write_uncoded_frame = opengl_write_frame,
-    .write_trailer  = opengl_write_trailer,
-    .control_message = opengl_control_message,
-};
