| /* |
| * 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 |
| #define WIN32_LEAN_AND_MEAN |
| #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/pixdesc.h" |
| #include "libavutil/log.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/avstring.h" |
| #include "libavformat/avformat.h" |
| #include "libavformat/internal.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", __FUNCTION__, __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); |
| sscanf(version, "%d.%d", &major, &minor); |
| |
| 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 |
| 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, |
| }; |
| |
| AVOutputFormat ff_opengl_muxer = { |
| .name = "opengl", |
| .long_name = NULL_IF_CONFIG_SMALL("OpenGL output"), |
| .priv_data_size = sizeof(OpenGLContext), |
| .audio_codec = AV_CODEC_ID_NONE, |
| .video_codec = AV_CODEC_ID_WRAPPED_AVFRAME, |
| .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, |
| .flags = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS, |
| .priv_class = &opengl_class, |
| }; |
