| 1 | /* |
| 2 | * Copyright (c) 2014 Lukasz Marek |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | //TODO: support for more formats |
| 22 | //TODO: support for more systems. |
| 23 | //TODO: implement X11, Windows, Mac OS native default window. SDL 1.2 doesn't allow to render to custom thread. |
| 24 | |
| 25 | #include <stdio.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <string.h> |
| 28 | #include <unistd.h> |
| 29 | #include <stddef.h> |
| 30 | |
| 31 | #include "config.h" |
| 32 | |
| 33 | #if HAVE_WINDOWS_H |
| 34 | #include <windows.h> |
| 35 | #endif |
| 36 | #if HAVE_OPENGL_GL3_H |
| 37 | #include <OpenGL/gl3.h> |
| 38 | #elif HAVE_ES2_GL_H |
| 39 | #include <ES2/gl.h> |
| 40 | #else |
| 41 | #include <GL/gl.h> |
| 42 | #include <GL/glext.h> |
| 43 | #endif |
| 44 | #if HAVE_GLXGETPROCADDRESS |
| 45 | #include <GL/glx.h> |
| 46 | #endif |
| 47 | |
| 48 | #if HAVE_SDL |
| 49 | #include <SDL.h> |
| 50 | #endif |
| 51 | |
| 52 | #include "libavutil/common.h" |
| 53 | #include "libavutil/pixdesc.h" |
| 54 | #include "libavutil/log.h" |
| 55 | #include "libavutil/opt.h" |
| 56 | #include "libavutil/avassert.h" |
| 57 | #include "libavutil/avstring.h" |
| 58 | #include "libavformat/avformat.h" |
| 59 | #include "libavformat/internal.h" |
| 60 | #include "libavdevice/avdevice.h" |
| 61 | #include "opengl_enc_shaders.h" |
| 62 | |
| 63 | #ifndef APIENTRY |
| 64 | #define APIENTRY |
| 65 | #endif |
| 66 | |
| 67 | /* FF_GL_RED_COMPONENT is used for plannar pixel types. |
| 68 | * Only red component is sampled in shaders. |
| 69 | * On some platforms GL_RED is not available and GL_LUMINANCE have to be used, |
| 70 | * but since OpenGL 3.0 GL_LUMINANCE is deprecated. |
| 71 | * GL_RED produces RGBA = value, 0, 0, 1. |
| 72 | * GL_LUMINANCE produces RGBA = value, value, value, 1. |
| 73 | * Note: GL_INTENSITY may also be used which produce RGBA = value, value, value, value. */ |
| 74 | #if defined(GL_RED) |
| 75 | #define FF_GL_RED_COMPONENT GL_RED |
| 76 | #elif defined(GL_LUMINANCE) |
| 77 | #define FF_GL_RED_COMPONENT GL_LUMINANCE |
| 78 | #else |
| 79 | #define FF_GL_RED_COMPONENT 0x1903; //GL_RED |
| 80 | #endif |
| 81 | |
| 82 | /* Constants not defined for iOS */ |
| 83 | #define FF_GL_UNSIGNED_BYTE_3_3_2 0x8032 |
| 84 | #define FF_GL_UNSIGNED_BYTE_2_3_3_REV 0x8362 |
| 85 | #define FF_GL_UNSIGNED_SHORT_1_5_5_5_REV 0x8366 |
| 86 | #define FF_GL_UNPACK_ROW_LENGTH 0x0CF2 |
| 87 | |
| 88 | /* MinGW exposes only OpenGL 1.1 API */ |
| 89 | #define FF_GL_ARRAY_BUFFER 0x8892 |
| 90 | #define FF_GL_ELEMENT_ARRAY_BUFFER 0x8893 |
| 91 | #define FF_GL_STATIC_DRAW 0x88E4 |
| 92 | #define FF_GL_FRAGMENT_SHADER 0x8B30 |
| 93 | #define FF_GL_VERTEX_SHADER 0x8B31 |
| 94 | #define FF_GL_COMPILE_STATUS 0x8B81 |
| 95 | #define FF_GL_LINK_STATUS 0x8B82 |
| 96 | #define FF_GL_INFO_LOG_LENGTH 0x8B84 |
| 97 | typedef void (APIENTRY *FF_PFNGLACTIVETEXTUREPROC) (GLenum texture); |
| 98 | typedef void (APIENTRY *FF_PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers); |
| 99 | typedef void (APIENTRY *FF_PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers); |
| 100 | typedef void (APIENTRY *FF_PFNGLBUFFERDATAPROC) (GLenum target, ptrdiff_t size, const GLvoid *data, GLenum usage); |
| 101 | typedef void (APIENTRY *FF_PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer); |
| 102 | typedef GLint (APIENTRY *FF_PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const char *name); |
| 103 | typedef void (APIENTRY *FF_PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index); |
| 104 | typedef void (APIENTRY *FF_PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, uintptr_t pointer); |
| 105 | typedef GLint (APIENTRY *FF_PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const char *name); |
| 106 | typedef void (APIENTRY *FF_PFNGLUNIFORM1FPROC) (GLint location, GLfloat v0); |
| 107 | typedef void (APIENTRY *FF_PFNGLUNIFORM1IPROC) (GLint location, GLint v0); |
| 108 | typedef void (APIENTRY *FF_PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value); |
| 109 | typedef GLuint (APIENTRY *FF_PFNGLCREATEPROGRAMPROC) (void); |
| 110 | typedef void (APIENTRY *FF_PFNGLDELETEPROGRAMPROC) (GLuint program); |
| 111 | typedef void (APIENTRY *FF_PFNGLUSEPROGRAMPROC) (GLuint program); |
| 112 | typedef void (APIENTRY *FF_PFNGLLINKPROGRAMPROC) (GLuint program); |
| 113 | typedef void (APIENTRY *FF_PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params); |
| 114 | typedef void (APIENTRY *FF_PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, char *infoLog); |
| 115 | typedef void (APIENTRY *FF_PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader); |
| 116 | typedef GLuint (APIENTRY *FF_PFNGLCREATESHADERPROC) (GLenum type); |
| 117 | typedef void (APIENTRY *FF_PFNGLDELETESHADERPROC) (GLuint shader); |
| 118 | typedef void (APIENTRY *FF_PFNGLCOMPILESHADERPROC) (GLuint shader); |
| 119 | typedef void (APIENTRY *FF_PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const char* *string, const GLint *length); |
| 120 | typedef void (APIENTRY *FF_PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params); |
| 121 | typedef void (APIENTRY *FF_PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, char *infoLog); |
| 122 | |
| 123 | typedef struct FFOpenGLFunctions { |
| 124 | FF_PFNGLACTIVETEXTUREPROC glActiveTexture; //Require GL ARB multitexture |
| 125 | FF_PFNGLGENBUFFERSPROC glGenBuffers; //Require GL_ARB_vertex_buffer_object |
| 126 | FF_PFNGLDELETEBUFFERSPROC glDeleteBuffers; //Require GL_ARB_vertex_buffer_object |
| 127 | FF_PFNGLBUFFERDATAPROC glBufferData; //Require GL_ARB_vertex_buffer_object |
| 128 | FF_PFNGLBINDBUFFERPROC glBindBuffer; //Require GL_ARB_vertex_buffer_object |
| 129 | FF_PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation; //Require GL_ARB_vertex_shader |
| 130 | FF_PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray; //Require GL_ARB_vertex_shader |
| 131 | FF_PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer; //Require GL_ARB_vertex_shader |
| 132 | FF_PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation; //Require GL_ARB_shader_objects |
| 133 | FF_PFNGLUNIFORM1FPROC glUniform1f; //Require GL_ARB_shader_objects |
| 134 | FF_PFNGLUNIFORM1IPROC glUniform1i; //Require GL_ARB_shader_objects |
| 135 | FF_PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv; //Require GL_ARB_shader_objects |
| 136 | FF_PFNGLCREATEPROGRAMPROC glCreateProgram; //Require GL_ARB_shader_objects |
| 137 | FF_PFNGLDELETEPROGRAMPROC glDeleteProgram; //Require GL_ARB_shader_objects |
| 138 | FF_PFNGLUSEPROGRAMPROC glUseProgram; //Require GL_ARB_shader_objects |
| 139 | FF_PFNGLLINKPROGRAMPROC glLinkProgram; //Require GL_ARB_shader_objects |
| 140 | FF_PFNGLGETPROGRAMIVPROC glGetProgramiv; //Require GL_ARB_shader_objects |
| 141 | FF_PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog; //Require GL_ARB_shader_objects |
| 142 | FF_PFNGLATTACHSHADERPROC glAttachShader; //Require GL_ARB_shader_objects |
| 143 | FF_PFNGLCREATESHADERPROC glCreateShader; //Require GL_ARB_shader_objects |
| 144 | FF_PFNGLDELETESHADERPROC glDeleteShader; //Require GL_ARB_shader_objects |
| 145 | FF_PFNGLCOMPILESHADERPROC glCompileShader; //Require GL_ARB_shader_objects |
| 146 | FF_PFNGLSHADERSOURCEPROC glShaderSource; //Require GL_ARB_shader_objects |
| 147 | FF_PFNGLGETSHADERIVPROC glGetShaderiv; //Require GL_ARB_shader_objects |
| 148 | FF_PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog; //Require GL_ARB_shader_objects |
| 149 | } FFOpenGLFunctions; |
| 150 | |
| 151 | #define OPENGL_ERROR_CHECK(ctx) \ |
| 152 | {\ |
| 153 | GLenum err_code; \ |
| 154 | if ((err_code = glGetError()) != GL_NO_ERROR) { \ |
| 155 | av_log(ctx, AV_LOG_ERROR, "OpenGL error occurred in '%s', line %d: %d\n", __FUNCTION__, __LINE__, err_code); \ |
| 156 | goto fail; \ |
| 157 | } \ |
| 158 | }\ |
| 159 | |
| 160 | typedef struct OpenGLVertexInfo |
| 161 | { |
| 162 | float x, y, z; ///<Position |
| 163 | float s0, t0; ///<Texture coords |
| 164 | } OpenGLVertexInfo; |
| 165 | |
| 166 | /* defines 2 triangles to display */ |
| 167 | static const GLushort g_index[6] = |
| 168 | { |
| 169 | 0, 1, 2, |
| 170 | 0, 3, 2, |
| 171 | }; |
| 172 | |
| 173 | typedef struct OpenGLContext { |
| 174 | AVClass *class; ///< class for private options |
| 175 | |
| 176 | #if HAVE_SDL |
| 177 | SDL_Surface *surface; |
| 178 | #endif |
| 179 | FFOpenGLFunctions glprocs; |
| 180 | |
| 181 | int inited; ///< Set to 1 when write_header was successfully called. |
| 182 | uint8_t background[4]; ///< Background color |
| 183 | int no_window; ///< 0 for create default window |
| 184 | char *window_title; ///< Title of the window |
| 185 | |
| 186 | /* OpenGL implementation limits */ |
| 187 | GLint max_texture_size; ///< Maximum texture size |
| 188 | GLint max_viewport_width; ///< Maximum viewport size |
| 189 | GLint max_viewport_height; ///< Maximum viewport size |
| 190 | int non_pow_2_textures; ///< 1 when non power of 2 textures are supported |
| 191 | int unpack_subimage; ///< 1 when GL_EXT_unpack_subimage is available |
| 192 | |
| 193 | /* Current OpenGL configuration */ |
| 194 | GLuint program; ///< Shader program |
| 195 | GLuint vertex_shader; ///< Vertex shader |
| 196 | GLuint fragment_shader; ///< Fragment shader for current pix_pmt |
| 197 | GLuint texture_name[4]; ///< Textures' IDs |
| 198 | GLuint index_buffer; ///< Index buffer |
| 199 | GLuint vertex_buffer; ///< Vertex buffer |
| 200 | OpenGLVertexInfo vertex[4]; ///< VBO |
| 201 | GLint projection_matrix_location; ///< Uniforms' locations |
| 202 | GLint model_view_matrix_location; |
| 203 | GLint color_map_location; |
| 204 | GLint chroma_div_w_location; |
| 205 | GLint chroma_div_h_location; |
| 206 | GLint texture_location[4]; |
| 207 | GLint position_attrib; ///< Attibutes' locations |
| 208 | GLint texture_coords_attrib; |
| 209 | |
| 210 | GLfloat projection_matrix[16]; ///< Projection matrix |
| 211 | GLfloat model_view_matrix[16]; ///< Modev view matrix |
| 212 | GLfloat color_map[16]; ///< RGBA color map matrix |
| 213 | GLfloat chroma_div_w; ///< Chroma subsampling w ratio |
| 214 | GLfloat chroma_div_h; ///< Chroma subsampling h ratio |
| 215 | |
| 216 | /* Stream information */ |
| 217 | GLenum format; |
| 218 | GLenum type; |
| 219 | int width; ///< Stream width |
| 220 | int height; ///< Stream height |
| 221 | enum AVPixelFormat pix_fmt; ///< Stream pixel format |
| 222 | int picture_width; ///< Rendered width |
| 223 | int picture_height; ///< Rendered height |
| 224 | int window_width; |
| 225 | int window_height; |
| 226 | } OpenGLContext; |
| 227 | |
| 228 | static const struct OpenGLFormatDesc { |
| 229 | enum AVPixelFormat fixel_format; |
| 230 | const char * const * fragment_shader; |
| 231 | GLenum format; |
| 232 | GLenum type; |
| 233 | } opengl_format_desc[] = { |
| 234 | { AV_PIX_FMT_YUV420P, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 235 | { AV_PIX_FMT_YUV444P, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 236 | { AV_PIX_FMT_YUV422P, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 237 | { AV_PIX_FMT_YUV410P, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 238 | { AV_PIX_FMT_YUV411P, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 239 | { AV_PIX_FMT_YUV440P, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 240 | { AV_PIX_FMT_YUV420P16, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 241 | { AV_PIX_FMT_YUV422P16, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 242 | { AV_PIX_FMT_YUV444P16, &FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 243 | { AV_PIX_FMT_YUVA420P, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 244 | { AV_PIX_FMT_YUVA444P, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 245 | { AV_PIX_FMT_YUVA422P, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 246 | { AV_PIX_FMT_YUVA420P16, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 247 | { AV_PIX_FMT_YUVA422P16, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 248 | { AV_PIX_FMT_YUVA444P16, &FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 249 | { AV_PIX_FMT_RGB24, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_BYTE }, |
| 250 | { AV_PIX_FMT_BGR24, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_BYTE }, |
| 251 | { AV_PIX_FMT_0RGB, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 252 | { AV_PIX_FMT_RGB0, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 253 | { AV_PIX_FMT_0BGR, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 254 | { AV_PIX_FMT_BGR0, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 255 | { AV_PIX_FMT_RGB565, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 }, |
| 256 | { AV_PIX_FMT_BGR565, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 }, |
| 257 | { AV_PIX_FMT_RGB555, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, FF_GL_UNSIGNED_SHORT_1_5_5_5_REV }, |
| 258 | { AV_PIX_FMT_BGR555, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, FF_GL_UNSIGNED_SHORT_1_5_5_5_REV }, |
| 259 | { AV_PIX_FMT_RGB8, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, FF_GL_UNSIGNED_BYTE_3_3_2 }, |
| 260 | { AV_PIX_FMT_BGR8, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, FF_GL_UNSIGNED_BYTE_2_3_3_REV }, |
| 261 | { AV_PIX_FMT_RGB48, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_SHORT }, |
| 262 | { AV_PIX_FMT_ARGB, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 263 | { AV_PIX_FMT_RGBA, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 264 | { AV_PIX_FMT_ABGR, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 265 | { AV_PIX_FMT_BGRA, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE }, |
| 266 | { AV_PIX_FMT_RGBA64, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_SHORT }, |
| 267 | { AV_PIX_FMT_BGRA64, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_SHORT }, |
| 268 | { AV_PIX_FMT_GBRP, &FF_OPENGL_FRAGMENT_SHADER_RGB_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 269 | { AV_PIX_FMT_GBRP16, &FF_OPENGL_FRAGMENT_SHADER_RGB_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 270 | { AV_PIX_FMT_GBRAP, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 271 | { AV_PIX_FMT_GBRAP16, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PLANAR, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 272 | { AV_PIX_FMT_GRAY8, &FF_OPENGL_FRAGMENT_SHADER_GRAY, FF_GL_RED_COMPONENT, GL_UNSIGNED_BYTE }, |
| 273 | { AV_PIX_FMT_GRAY16, &FF_OPENGL_FRAGMENT_SHADER_GRAY, FF_GL_RED_COMPONENT, GL_UNSIGNED_SHORT }, |
| 274 | { AV_PIX_FMT_NONE, NULL } |
| 275 | }; |
| 276 | |
| 277 | static av_cold int opengl_prepare_vertex(AVFormatContext *s); |
| 278 | static int opengl_draw(AVFormatContext *h, void *intput, int repaint, int is_pkt); |
| 279 | static av_cold int opengl_init_context(OpenGLContext *opengl); |
| 280 | |
| 281 | static av_cold void opengl_deinit_context(OpenGLContext *opengl) |
| 282 | { |
| 283 | glDeleteTextures(4, opengl->texture_name); |
| 284 | opengl->texture_name[0] = opengl->texture_name[1] = |
| 285 | opengl->texture_name[2] = opengl->texture_name[3] = 0; |
| 286 | if (opengl->glprocs.glUseProgram) |
| 287 | opengl->glprocs.glUseProgram(0); |
| 288 | if (opengl->glprocs.glDeleteProgram) { |
| 289 | opengl->glprocs.glDeleteProgram(opengl->program); |
| 290 | opengl->program = 0; |
| 291 | } |
| 292 | if (opengl->glprocs.glDeleteShader) { |
| 293 | opengl->glprocs.glDeleteShader(opengl->vertex_shader); |
| 294 | opengl->glprocs.glDeleteShader(opengl->fragment_shader); |
| 295 | opengl->vertex_shader = opengl->fragment_shader = 0; |
| 296 | } |
| 297 | if (opengl->glprocs.glBindBuffer) { |
| 298 | opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, 0); |
| 299 | opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, 0); |
| 300 | } |
| 301 | if (opengl->glprocs.glDeleteBuffers) { |
| 302 | opengl->glprocs.glDeleteBuffers(2, &opengl->index_buffer); |
| 303 | opengl->vertex_buffer = opengl->index_buffer = 0; |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | static int opengl_resize(AVFormatContext *h, int width, int height) |
| 308 | { |
| 309 | int ret = 0; |
| 310 | OpenGLContext *opengl = h->priv_data; |
| 311 | opengl->window_width = width; |
| 312 | opengl->window_height = height; |
| 313 | if (opengl->inited) { |
| 314 | if (opengl->no_window && |
| 315 | (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0)) < 0) { |
| 316 | av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n"); |
| 317 | goto end; |
| 318 | } |
| 319 | if ((ret = opengl_prepare_vertex(h)) < 0) |
| 320 | goto end; |
| 321 | ret = opengl_draw(h, NULL, 1, 0); |
| 322 | } |
| 323 | end: |
| 324 | return ret; |
| 325 | } |
| 326 | |
| 327 | static int opengl_control_message(AVFormatContext *h, int type, void *data, size_t data_size) |
| 328 | { |
| 329 | OpenGLContext *opengl = h->priv_data; |
| 330 | switch(type) { |
| 331 | case AV_APP_TO_DEV_WINDOW_SIZE: |
| 332 | if (data) { |
| 333 | AVDeviceRect *message = data; |
| 334 | return opengl_resize(h, message->width, message->height); |
| 335 | } |
| 336 | return AVERROR(EINVAL); |
| 337 | case AV_APP_TO_DEV_WINDOW_REPAINT: |
| 338 | return opengl_resize(h, opengl->window_width, opengl->window_height); |
| 339 | } |
| 340 | return AVERROR(ENOSYS); |
| 341 | } |
| 342 | |
| 343 | #if HAVE_SDL |
| 344 | static int opengl_sdl_recreate_window(OpenGLContext *opengl, int width, int height) |
| 345 | { |
| 346 | opengl->surface = SDL_SetVideoMode(width, height, |
| 347 | 32, SDL_OPENGL | SDL_RESIZABLE); |
| 348 | if (!opengl->surface) { |
| 349 | av_log(opengl, AV_LOG_ERROR, "Unable to set video mode: %s\n", SDL_GetError()); |
| 350 | return AVERROR_EXTERNAL; |
| 351 | } |
| 352 | SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8); |
| 353 | SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8); |
| 354 | SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8); |
| 355 | SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8); |
| 356 | SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | static int opengl_sdl_process_events(AVFormatContext *h) |
| 361 | { |
| 362 | int ret; |
| 363 | OpenGLContext *opengl = h->priv_data; |
| 364 | SDL_Event event; |
| 365 | SDL_PumpEvents(); |
| 366 | while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_ALLEVENTS) > 0) { |
| 367 | switch (event.type) { |
| 368 | case SDL_QUIT: |
| 369 | return AVERROR(EIO); |
| 370 | case SDL_KEYDOWN: |
| 371 | switch (event.key.keysym.sym) { |
| 372 | case SDLK_ESCAPE: |
| 373 | case SDLK_q: |
| 374 | return AVERROR(EIO); |
| 375 | } |
| 376 | return 0; |
| 377 | case SDL_VIDEORESIZE: { |
| 378 | char buffer[100]; |
| 379 | int reinit; |
| 380 | AVDeviceRect message; |
| 381 | /* clean up old context because SDL_SetVideoMode may lose its state. */ |
| 382 | SDL_VideoDriverName(buffer, sizeof(buffer)); |
| 383 | reinit = !av_strncasecmp(buffer, "quartz", sizeof(buffer)); |
| 384 | if (reinit) { |
| 385 | opengl_deinit_context(opengl); |
| 386 | } |
| 387 | if ((ret = opengl_sdl_recreate_window(opengl, event.resize.w, event.resize.h)) < 0) |
| 388 | return ret; |
| 389 | if (reinit && (ret = opengl_init_context(opengl)) < 0) |
| 390 | return ret; |
| 391 | message.width = opengl->surface->w; |
| 392 | message.height = opengl->surface->h; |
| 393 | return opengl_control_message(h, AV_APP_TO_DEV_WINDOW_SIZE, &message, sizeof(AVDeviceRect)); |
| 394 | } |
| 395 | } |
| 396 | } |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | static int av_cold opengl_sdl_create_window(AVFormatContext *h) |
| 401 | { |
| 402 | int ret; |
| 403 | char buffer[100]; |
| 404 | OpenGLContext *opengl = h->priv_data; |
| 405 | AVDeviceRect message; |
| 406 | if (SDL_Init(SDL_INIT_VIDEO)) { |
| 407 | av_log(opengl, AV_LOG_ERROR, "Unable to initialize SDL: %s\n", SDL_GetError()); |
| 408 | return AVERROR_EXTERNAL; |
| 409 | } |
| 410 | if ((ret = opengl_sdl_recreate_window(opengl, opengl->window_width, |
| 411 | opengl->window_height)) < 0) |
| 412 | return ret; |
| 413 | av_log(opengl, AV_LOG_INFO, "SDL driver: '%s'.\n", SDL_VideoDriverName(buffer, sizeof(buffer))); |
| 414 | message.width = opengl->surface->w; |
| 415 | message.height = opengl->surface->h; |
| 416 | SDL_WM_SetCaption(opengl->window_title, NULL); |
| 417 | opengl_control_message(h, AV_APP_TO_DEV_WINDOW_SIZE, &message, sizeof(AVDeviceRect)); |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | static int av_cold opengl_sdl_load_procedures(OpenGLContext *opengl) |
| 422 | { |
| 423 | FFOpenGLFunctions *procs = &opengl->glprocs; |
| 424 | |
| 425 | #define LOAD_OPENGL_FUN(name, type) \ |
| 426 | procs->name = (type)SDL_GL_GetProcAddress(#name); \ |
| 427 | if (!procs->name) { \ |
| 428 | av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \ |
| 429 | return AVERROR(ENOSYS); \ |
| 430 | } |
| 431 | |
| 432 | LOAD_OPENGL_FUN(glActiveTexture, FF_PFNGLACTIVETEXTUREPROC) |
| 433 | LOAD_OPENGL_FUN(glGenBuffers, FF_PFNGLGENBUFFERSPROC) |
| 434 | LOAD_OPENGL_FUN(glDeleteBuffers, FF_PFNGLDELETEBUFFERSPROC) |
| 435 | LOAD_OPENGL_FUN(glBufferData, FF_PFNGLBUFFERDATAPROC) |
| 436 | LOAD_OPENGL_FUN(glBindBuffer, FF_PFNGLBINDBUFFERPROC) |
| 437 | LOAD_OPENGL_FUN(glGetAttribLocation, FF_PFNGLGETATTRIBLOCATIONPROC) |
| 438 | LOAD_OPENGL_FUN(glGetUniformLocation, FF_PFNGLGETUNIFORMLOCATIONPROC) |
| 439 | LOAD_OPENGL_FUN(glUniform1f, FF_PFNGLUNIFORM1FPROC) |
| 440 | LOAD_OPENGL_FUN(glUniform1i, FF_PFNGLUNIFORM1IPROC) |
| 441 | LOAD_OPENGL_FUN(glUniformMatrix4fv, FF_PFNGLUNIFORMMATRIX4FVPROC) |
| 442 | LOAD_OPENGL_FUN(glCreateProgram, FF_PFNGLCREATEPROGRAMPROC) |
| 443 | LOAD_OPENGL_FUN(glDeleteProgram, FF_PFNGLDELETEPROGRAMPROC) |
| 444 | LOAD_OPENGL_FUN(glUseProgram, FF_PFNGLUSEPROGRAMPROC) |
| 445 | LOAD_OPENGL_FUN(glLinkProgram, FF_PFNGLLINKPROGRAMPROC) |
| 446 | LOAD_OPENGL_FUN(glGetProgramiv, FF_PFNGLGETPROGRAMIVPROC) |
| 447 | LOAD_OPENGL_FUN(glGetProgramInfoLog, FF_PFNGLGETPROGRAMINFOLOGPROC) |
| 448 | LOAD_OPENGL_FUN(glAttachShader, FF_PFNGLATTACHSHADERPROC) |
| 449 | LOAD_OPENGL_FUN(glCreateShader, FF_PFNGLCREATESHADERPROC) |
| 450 | LOAD_OPENGL_FUN(glDeleteShader, FF_PFNGLDELETESHADERPROC) |
| 451 | LOAD_OPENGL_FUN(glCompileShader, FF_PFNGLCOMPILESHADERPROC) |
| 452 | LOAD_OPENGL_FUN(glShaderSource, FF_PFNGLSHADERSOURCEPROC) |
| 453 | LOAD_OPENGL_FUN(glGetShaderiv, FF_PFNGLGETSHADERIVPROC) |
| 454 | LOAD_OPENGL_FUN(glGetShaderInfoLog, FF_PFNGLGETSHADERINFOLOGPROC) |
| 455 | LOAD_OPENGL_FUN(glEnableVertexAttribArray, FF_PFNGLENABLEVERTEXATTRIBARRAYPROC) |
| 456 | LOAD_OPENGL_FUN(glVertexAttribPointer, FF_PFNGLVERTEXATTRIBPOINTERPROC) |
| 457 | |
| 458 | return 0; |
| 459 | |
| 460 | #undef LOAD_OPENGL_FUN |
| 461 | } |
| 462 | #endif /* HAVE_SDL */ |
| 463 | |
| 464 | #if defined(__APPLE__) |
| 465 | static int av_cold opengl_load_procedures(OpenGLContext *opengl) |
| 466 | { |
| 467 | FFOpenGLFunctions *procs = &opengl->glprocs; |
| 468 | |
| 469 | #if HAVE_SDL |
| 470 | if (!opengl->no_window) |
| 471 | return opengl_sdl_load_procedures(opengl); |
| 472 | #endif |
| 473 | |
| 474 | procs->glActiveTexture = glActiveTexture; |
| 475 | procs->glGenBuffers = glGenBuffers; |
| 476 | procs->glDeleteBuffers = glDeleteBuffers; |
| 477 | procs->glBufferData = glBufferData; |
| 478 | procs->glBindBuffer = glBindBuffer; |
| 479 | procs->glGetAttribLocation = glGetAttribLocation; |
| 480 | procs->glGetUniformLocation = glGetUniformLocation; |
| 481 | procs->glUniform1f = glUniform1f; |
| 482 | procs->glUniform1i = glUniform1i; |
| 483 | procs->glUniformMatrix4fv = glUniformMatrix4fv; |
| 484 | procs->glCreateProgram = glCreateProgram; |
| 485 | procs->glDeleteProgram = glDeleteProgram; |
| 486 | procs->glUseProgram = glUseProgram; |
| 487 | procs->glLinkProgram = glLinkProgram; |
| 488 | procs->glGetProgramiv = glGetProgramiv; |
| 489 | procs->glGetProgramInfoLog = glGetProgramInfoLog; |
| 490 | procs->glAttachShader = glAttachShader; |
| 491 | procs->glCreateShader = glCreateShader; |
| 492 | procs->glDeleteShader = glDeleteShader; |
| 493 | procs->glCompileShader = glCompileShader; |
| 494 | procs->glShaderSource = glShaderSource; |
| 495 | procs->glGetShaderiv = glGetShaderiv; |
| 496 | procs->glGetShaderInfoLog = glGetShaderInfoLog; |
| 497 | procs->glEnableVertexAttribArray = glEnableVertexAttribArray; |
| 498 | procs->glVertexAttribPointer = (FF_PFNGLVERTEXATTRIBPOINTERPROC) glVertexAttribPointer; |
| 499 | return 0; |
| 500 | } |
| 501 | #else |
| 502 | static int av_cold opengl_load_procedures(OpenGLContext *opengl) |
| 503 | { |
| 504 | FFOpenGLFunctions *procs = &opengl->glprocs; |
| 505 | |
| 506 | #if HAVE_GLXGETPROCADDRESS |
| 507 | #define SelectedGetProcAddress glXGetProcAddress |
| 508 | #elif HAVE_WGLGETPROCADDRESS |
| 509 | #define SelectedGetProcAddress wglGetProcAddress |
| 510 | #endif |
| 511 | |
| 512 | #define LOAD_OPENGL_FUN(name, type) \ |
| 513 | procs->name = (type)SelectedGetProcAddress(#name); \ |
| 514 | if (!procs->name) { \ |
| 515 | av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \ |
| 516 | return AVERROR(ENOSYS); \ |
| 517 | } |
| 518 | |
| 519 | #if HAVE_SDL |
| 520 | if (!opengl->no_window) |
| 521 | return opengl_sdl_load_procedures(opengl); |
| 522 | #endif |
| 523 | |
| 524 | LOAD_OPENGL_FUN(glActiveTexture, FF_PFNGLACTIVETEXTUREPROC) |
| 525 | LOAD_OPENGL_FUN(glGenBuffers, FF_PFNGLGENBUFFERSPROC) |
| 526 | LOAD_OPENGL_FUN(glDeleteBuffers, FF_PFNGLDELETEBUFFERSPROC) |
| 527 | LOAD_OPENGL_FUN(glBufferData, FF_PFNGLBUFFERDATAPROC) |
| 528 | LOAD_OPENGL_FUN(glBindBuffer, FF_PFNGLBINDBUFFERPROC) |
| 529 | LOAD_OPENGL_FUN(glGetAttribLocation, FF_PFNGLGETATTRIBLOCATIONPROC) |
| 530 | LOAD_OPENGL_FUN(glGetUniformLocation, FF_PFNGLGETUNIFORMLOCATIONPROC) |
| 531 | LOAD_OPENGL_FUN(glUniform1f, FF_PFNGLUNIFORM1FPROC) |
| 532 | LOAD_OPENGL_FUN(glUniform1i, FF_PFNGLUNIFORM1IPROC) |
| 533 | LOAD_OPENGL_FUN(glUniformMatrix4fv, FF_PFNGLUNIFORMMATRIX4FVPROC) |
| 534 | LOAD_OPENGL_FUN(glCreateProgram, FF_PFNGLCREATEPROGRAMPROC) |
| 535 | LOAD_OPENGL_FUN(glDeleteProgram, FF_PFNGLDELETEPROGRAMPROC) |
| 536 | LOAD_OPENGL_FUN(glUseProgram, FF_PFNGLUSEPROGRAMPROC) |
| 537 | LOAD_OPENGL_FUN(glLinkProgram, FF_PFNGLLINKPROGRAMPROC) |
| 538 | LOAD_OPENGL_FUN(glGetProgramiv, FF_PFNGLGETPROGRAMIVPROC) |
| 539 | LOAD_OPENGL_FUN(glGetProgramInfoLog, FF_PFNGLGETPROGRAMINFOLOGPROC) |
| 540 | LOAD_OPENGL_FUN(glAttachShader, FF_PFNGLATTACHSHADERPROC) |
| 541 | LOAD_OPENGL_FUN(glCreateShader, FF_PFNGLCREATESHADERPROC) |
| 542 | LOAD_OPENGL_FUN(glDeleteShader, FF_PFNGLDELETESHADERPROC) |
| 543 | LOAD_OPENGL_FUN(glCompileShader, FF_PFNGLCOMPILESHADERPROC) |
| 544 | LOAD_OPENGL_FUN(glShaderSource, FF_PFNGLSHADERSOURCEPROC) |
| 545 | LOAD_OPENGL_FUN(glGetShaderiv, FF_PFNGLGETSHADERIVPROC) |
| 546 | LOAD_OPENGL_FUN(glGetShaderInfoLog, FF_PFNGLGETSHADERINFOLOGPROC) |
| 547 | LOAD_OPENGL_FUN(glEnableVertexAttribArray, FF_PFNGLENABLEVERTEXATTRIBARRAYPROC) |
| 548 | LOAD_OPENGL_FUN(glVertexAttribPointer, FF_PFNGLVERTEXATTRIBPOINTERPROC) |
| 549 | |
| 550 | return 0; |
| 551 | |
| 552 | #undef SelectedGetProcAddress |
| 553 | #undef LOAD_OPENGL_FUN |
| 554 | } |
| 555 | #endif |
| 556 | |
| 557 | static void opengl_make_identity(float matrix[16]) |
| 558 | { |
| 559 | memset(matrix, 0, 16 * sizeof(float)); |
| 560 | matrix[0] = matrix[5] = matrix[10] = matrix[15] = 1.0f; |
| 561 | } |
| 562 | |
| 563 | static void opengl_make_ortho(float matrix[16], float left, float right, |
| 564 | float bottom, float top, float nearZ, float farZ) |
| 565 | { |
| 566 | float ral = right + left; |
| 567 | float rsl = right - left; |
| 568 | float tab = top + bottom; |
| 569 | float tsb = top - bottom; |
| 570 | float fan = farZ + nearZ; |
| 571 | float fsn = farZ - nearZ; |
| 572 | |
| 573 | memset(matrix, 0, 16 * sizeof(float)); |
| 574 | matrix[0] = 2.0f / rsl; |
| 575 | matrix[5] = 2.0f / tsb; |
| 576 | matrix[10] = -2.0f / fsn; |
| 577 | matrix[12] = -ral / rsl; |
| 578 | matrix[13] = -tab / tsb; |
| 579 | matrix[14] = -fan / fsn; |
| 580 | matrix[15] = 1.0f; |
| 581 | } |
| 582 | |
| 583 | static av_cold int opengl_read_limits(OpenGLContext *opengl) |
| 584 | { |
| 585 | static const struct{ |
| 586 | const char *extension; |
| 587 | int major; |
| 588 | int minor; |
| 589 | } required_extensions[] = { |
| 590 | { "GL_ARB_multitexture", 1, 3 }, |
| 591 | { "GL_ARB_vertex_buffer_object", 1, 5 }, //GLX_ARB_vertex_buffer_object |
| 592 | { "GL_ARB_vertex_shader", 2, 0 }, |
| 593 | { "GL_ARB_fragment_shader", 2, 0 }, |
| 594 | { "GL_ARB_shader_objects", 2, 0 }, |
| 595 | { NULL, 0, 0 } |
| 596 | }; |
| 597 | int i, major, minor; |
| 598 | const char *extensions, *version; |
| 599 | |
| 600 | version = glGetString(GL_VERSION); |
| 601 | extensions = glGetString(GL_EXTENSIONS); |
| 602 | |
| 603 | av_log(opengl, AV_LOG_DEBUG, "OpenGL version: %s\n", version); |
| 604 | sscanf(version, "%d.%d", &major, &minor); |
| 605 | |
| 606 | for (i = 0; required_extensions[i].extension; i++) { |
| 607 | if (major < required_extensions[i].major && |
| 608 | (major == required_extensions[i].major && minor < required_extensions[i].minor) && |
| 609 | !strstr(extensions, required_extensions[i].extension)) { |
| 610 | av_log(opengl, AV_LOG_ERROR, "Required extension %s is not supported.\n", |
| 611 | required_extensions[i].extension); |
| 612 | av_log(opengl, AV_LOG_DEBUG, "Supported extensions are: %s\n", extensions); |
| 613 | return AVERROR(ENOSYS); |
| 614 | } |
| 615 | } |
| 616 | glGetIntegerv(GL_MAX_TEXTURE_SIZE, &opengl->max_texture_size); |
| 617 | glGetIntegerv(GL_MAX_VIEWPORT_DIMS, &opengl->max_viewport_width); |
| 618 | opengl->non_pow_2_textures = major >= 2 || strstr(extensions, "GL_ARB_texture_non_power_of_two"); |
| 619 | #if defined(GL_ES_VERSION_2_0) |
| 620 | opengl->unpack_subimage = !!strstr(extensions, "GL_EXT_unpack_subimage"); |
| 621 | #else |
| 622 | opengl->unpack_subimage = 1; |
| 623 | #endif |
| 624 | |
| 625 | av_log(opengl, AV_LOG_DEBUG, "Non Power of 2 textures support: %s\n", opengl->non_pow_2_textures ? "Yes" : "No"); |
| 626 | av_log(opengl, AV_LOG_DEBUG, "Unpack Subimage extension support: %s\n", opengl->unpack_subimage ? "Yes" : "No"); |
| 627 | av_log(opengl, AV_LOG_DEBUG, "Max texture size: %dx%d\n", opengl->max_texture_size, opengl->max_texture_size); |
| 628 | av_log(opengl, AV_LOG_DEBUG, "Max viewport size: %dx%d\n", |
| 629 | opengl->max_viewport_width, opengl->max_viewport_height); |
| 630 | |
| 631 | OPENGL_ERROR_CHECK(opengl); |
| 632 | return 0; |
| 633 | fail: |
| 634 | return AVERROR_EXTERNAL; |
| 635 | } |
| 636 | |
| 637 | static const char* opengl_get_fragment_shader_code(enum AVPixelFormat format) |
| 638 | { |
| 639 | int i; |
| 640 | for (i = 0; i < FF_ARRAY_ELEMS(opengl_format_desc); i++) { |
| 641 | if (opengl_format_desc[i].fixel_format == format) |
| 642 | return *opengl_format_desc[i].fragment_shader; |
| 643 | } |
| 644 | return NULL; |
| 645 | } |
| 646 | |
| 647 | static int opengl_type_size(GLenum type) |
| 648 | { |
| 649 | switch(type) { |
| 650 | case GL_UNSIGNED_SHORT: |
| 651 | case FF_GL_UNSIGNED_SHORT_1_5_5_5_REV: |
| 652 | case GL_UNSIGNED_SHORT_5_6_5: |
| 653 | return 2; |
| 654 | case GL_UNSIGNED_BYTE: |
| 655 | case FF_GL_UNSIGNED_BYTE_3_3_2: |
| 656 | case FF_GL_UNSIGNED_BYTE_2_3_3_REV: |
| 657 | default: |
| 658 | break; |
| 659 | } |
| 660 | return 1; |
| 661 | } |
| 662 | |
| 663 | static av_cold void opengl_get_texture_params(OpenGLContext *opengl) |
| 664 | { |
| 665 | int i; |
| 666 | for (i = 0; i < FF_ARRAY_ELEMS(opengl_format_desc); i++) { |
| 667 | if (opengl_format_desc[i].fixel_format == opengl->pix_fmt) { |
| 668 | opengl->format = opengl_format_desc[i].format; |
| 669 | opengl->type = opengl_format_desc[i].type; |
| 670 | break; |
| 671 | } |
| 672 | } |
| 673 | } |
| 674 | |
| 675 | static void opengl_compute_display_area(AVFormatContext *s) |
| 676 | { |
| 677 | AVRational sar, dar; /* sample and display aspect ratios */ |
| 678 | OpenGLContext *opengl = s->priv_data; |
| 679 | AVStream *st = s->streams[0]; |
| 680 | AVCodecContext *encctx = st->codec; |
| 681 | |
| 682 | /* compute overlay width and height from the codec context information */ |
| 683 | sar = st->sample_aspect_ratio.num ? st->sample_aspect_ratio : (AVRational){ 1, 1 }; |
| 684 | dar = av_mul_q(sar, (AVRational){ encctx->width, encctx->height }); |
| 685 | |
| 686 | /* we suppose the screen has a 1/1 sample aspect ratio */ |
| 687 | /* fit in the window */ |
| 688 | if (av_cmp_q(dar, (AVRational){ opengl->window_width, opengl->window_height }) > 0) { |
| 689 | /* fit in width */ |
| 690 | opengl->picture_width = opengl->window_width; |
| 691 | opengl->picture_height = av_rescale(opengl->picture_width, dar.den, dar.num); |
| 692 | } else { |
| 693 | /* fit in height */ |
| 694 | opengl->picture_height = opengl->window_height; |
| 695 | opengl->picture_width = av_rescale(opengl->picture_height, dar.num, dar.den); |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | static av_cold void opengl_get_texture_size(OpenGLContext *opengl, int in_width, int in_height, |
| 700 | int *out_width, int *out_height) |
| 701 | { |
| 702 | if (opengl->non_pow_2_textures) { |
| 703 | *out_width = in_width; |
| 704 | *out_height = in_height; |
| 705 | } else { |
| 706 | int max = FFMIN(FFMAX(in_width, in_height), opengl->max_texture_size); |
| 707 | unsigned power_of_2 = 1; |
| 708 | while (power_of_2 < max) |
| 709 | power_of_2 *= 2; |
| 710 | *out_height = power_of_2; |
| 711 | *out_width = power_of_2; |
| 712 | av_log(opengl, AV_LOG_DEBUG, "Texture size calculated from %dx%d into %dx%d\n", |
| 713 | in_width, in_height, *out_width, *out_height); |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | static av_cold void opengl_fill_color_map(OpenGLContext *opengl) |
| 718 | { |
| 719 | const AVPixFmtDescriptor *desc; |
| 720 | int shift; |
| 721 | enum AVPixelFormat pix_fmt = opengl->pix_fmt; |
| 722 | |
| 723 | /* We need order of components, not exact position, some minor HACKs here */ |
| 724 | if (pix_fmt == AV_PIX_FMT_RGB565 || pix_fmt == AV_PIX_FMT_BGR555 || |
| 725 | pix_fmt == AV_PIX_FMT_BGR8 || pix_fmt == AV_PIX_FMT_RGB8) |
| 726 | pix_fmt = AV_PIX_FMT_RGB24; |
| 727 | else if (pix_fmt == AV_PIX_FMT_BGR565 || pix_fmt == AV_PIX_FMT_RGB555) |
| 728 | pix_fmt = AV_PIX_FMT_BGR24; |
| 729 | |
| 730 | desc = av_pix_fmt_desc_get(pix_fmt); |
| 731 | if (!(desc->flags & AV_PIX_FMT_FLAG_RGB)) |
| 732 | return; |
| 733 | |
| 734 | #define FILL_COMPONENT(i) { \ |
| 735 | shift = desc->comp[i].depth_minus1 >> 3; \ |
| 736 | opengl->color_map[(i << 2) + ((desc->comp[i].offset_plus1 - 1) >> shift)] = 1.0; \ |
| 737 | } |
| 738 | |
| 739 | memset(opengl->color_map, 0, sizeof(opengl->color_map)); |
| 740 | FILL_COMPONENT(0); |
| 741 | FILL_COMPONENT(1); |
| 742 | FILL_COMPONENT(2); |
| 743 | if (desc->flags & AV_PIX_FMT_FLAG_ALPHA) |
| 744 | FILL_COMPONENT(3); |
| 745 | |
| 746 | #undef FILL_COMPONENT |
| 747 | } |
| 748 | |
| 749 | static av_cold GLuint opengl_load_shader(OpenGLContext *opengl, GLenum type, const char *source) |
| 750 | { |
| 751 | GLuint shader = opengl->glprocs.glCreateShader(type); |
| 752 | GLint result; |
| 753 | if (!shader) { |
| 754 | av_log(opengl, AV_LOG_ERROR, "glCreateShader() failed\n"); |
| 755 | return 0; |
| 756 | } |
| 757 | opengl->glprocs.glShaderSource(shader, 1, &source, NULL); |
| 758 | opengl->glprocs.glCompileShader(shader); |
| 759 | |
| 760 | opengl->glprocs.glGetShaderiv(shader, FF_GL_COMPILE_STATUS, &result); |
| 761 | if (!result) { |
| 762 | char *log; |
| 763 | opengl->glprocs.glGetShaderiv(shader, FF_GL_INFO_LOG_LENGTH, &result); |
| 764 | if (result) { |
| 765 | if ((log = av_malloc(result))) { |
| 766 | opengl->glprocs.glGetShaderInfoLog(shader, result, NULL, log); |
| 767 | av_log(opengl, AV_LOG_ERROR, "Compile error: %s\n", log); |
| 768 | av_free(log); |
| 769 | } |
| 770 | } |
| 771 | goto fail; |
| 772 | } |
| 773 | OPENGL_ERROR_CHECK(opengl); |
| 774 | return shader; |
| 775 | fail: |
| 776 | opengl->glprocs.glDeleteShader(shader); |
| 777 | return 0; |
| 778 | } |
| 779 | |
| 780 | static av_cold int opengl_compile_shaders(OpenGLContext *opengl, enum AVPixelFormat pix_fmt) |
| 781 | { |
| 782 | GLint result; |
| 783 | const char *fragment_shader_code = opengl_get_fragment_shader_code(pix_fmt); |
| 784 | |
| 785 | if (!fragment_shader_code) { |
| 786 | av_log(opengl, AV_LOG_ERROR, "Provided pixel format '%s' is not supported\n", |
| 787 | av_get_pix_fmt_name(pix_fmt)); |
| 788 | return AVERROR(EINVAL); |
| 789 | } |
| 790 | |
| 791 | opengl->vertex_shader = opengl_load_shader(opengl, FF_GL_VERTEX_SHADER, |
| 792 | FF_OPENGL_VERTEX_SHADER); |
| 793 | if (!opengl->vertex_shader) { |
| 794 | av_log(opengl, AV_LOG_ERROR, "Vertex shader loading failed.\n"); |
| 795 | goto fail; |
| 796 | } |
| 797 | opengl->fragment_shader = opengl_load_shader(opengl, FF_GL_FRAGMENT_SHADER, |
| 798 | fragment_shader_code); |
| 799 | if (!opengl->fragment_shader) { |
| 800 | av_log(opengl, AV_LOG_ERROR, "Fragment shader loading failed.\n"); |
| 801 | goto fail; |
| 802 | } |
| 803 | |
| 804 | opengl->program = opengl->glprocs.glCreateProgram(); |
| 805 | if (!opengl->program) |
| 806 | goto fail; |
| 807 | |
| 808 | opengl->glprocs.glAttachShader(opengl->program, opengl->vertex_shader); |
| 809 | opengl->glprocs.glAttachShader(opengl->program, opengl->fragment_shader); |
| 810 | opengl->glprocs.glLinkProgram(opengl->program); |
| 811 | |
| 812 | opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_LINK_STATUS, &result); |
| 813 | if (!result) { |
| 814 | char *log; |
| 815 | opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_INFO_LOG_LENGTH, &result); |
| 816 | if (result) { |
| 817 | log = av_malloc(result); |
| 818 | if (!log) |
| 819 | goto fail; |
| 820 | opengl->glprocs.glGetProgramInfoLog(opengl->program, result, NULL, log); |
| 821 | av_log(opengl, AV_LOG_ERROR, "Link error: %s\n", log); |
| 822 | av_free(log); |
| 823 | } |
| 824 | goto fail; |
| 825 | } |
| 826 | |
| 827 | opengl->position_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_position"); |
| 828 | opengl->texture_coords_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_textureCoords"); |
| 829 | opengl->projection_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_projectionMatrix"); |
| 830 | opengl->model_view_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_modelViewMatrix"); |
| 831 | opengl->color_map_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_colorMap"); |
| 832 | opengl->texture_location[0] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture0"); |
| 833 | opengl->texture_location[1] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture1"); |
| 834 | opengl->texture_location[2] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture2"); |
| 835 | opengl->texture_location[3] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture3"); |
| 836 | opengl->chroma_div_w_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_div_w"); |
| 837 | opengl->chroma_div_h_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_div_h"); |
| 838 | |
| 839 | OPENGL_ERROR_CHECK(opengl); |
| 840 | return 0; |
| 841 | fail: |
| 842 | opengl->glprocs.glDeleteShader(opengl->vertex_shader); |
| 843 | opengl->glprocs.glDeleteShader(opengl->fragment_shader); |
| 844 | opengl->glprocs.glDeleteProgram(opengl->program); |
| 845 | opengl->fragment_shader = opengl->vertex_shader = opengl->program = 0; |
| 846 | return AVERROR_EXTERNAL; |
| 847 | } |
| 848 | |
| 849 | static av_cold int opengl_configure_texture(OpenGLContext *opengl, GLuint texture, |
| 850 | GLsizei width, GLsizei height) |
| 851 | { |
| 852 | if (texture) { |
| 853 | int new_width, new_height; |
| 854 | opengl_get_texture_size(opengl, width, height, &new_width, &new_height); |
| 855 | glBindTexture(GL_TEXTURE_2D, texture); |
| 856 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| 857 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| 858 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| 859 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| 860 | glTexImage2D(GL_TEXTURE_2D, 0, opengl->format, new_width, new_height, 0, |
| 861 | opengl->format, opengl->type, NULL); |
| 862 | OPENGL_ERROR_CHECK(NULL); |
| 863 | } |
| 864 | return 0; |
| 865 | fail: |
| 866 | return AVERROR_EXTERNAL; |
| 867 | } |
| 868 | |
| 869 | static av_cold int opengl_prepare_vertex(AVFormatContext *s) |
| 870 | { |
| 871 | OpenGLContext *opengl = s->priv_data; |
| 872 | int tex_w, tex_h; |
| 873 | |
| 874 | if (opengl->window_width > opengl->max_viewport_width || opengl->window_height > opengl->max_viewport_height) { |
| 875 | opengl->window_width = FFMIN(opengl->window_width, opengl->max_viewport_width); |
| 876 | opengl->window_height = FFMIN(opengl->window_height, opengl->max_viewport_height); |
| 877 | av_log(opengl, AV_LOG_WARNING, "Too big viewport requested, limited to %dx%d", opengl->window_width, opengl->window_height); |
| 878 | } |
| 879 | glViewport(0, 0, opengl->window_width, opengl->window_height); |
| 880 | opengl_make_ortho(opengl->projection_matrix, |
| 881 | - (float)opengl->window_width / 2.0f, (float)opengl->window_width / 2.0f, |
| 882 | - (float)opengl->window_height / 2.0f, (float)opengl->window_height / 2.0f, |
| 883 | 1.0f, -1.0f); |
| 884 | opengl_make_identity(opengl->model_view_matrix); |
| 885 | |
| 886 | opengl_compute_display_area(s); |
| 887 | |
| 888 | opengl->vertex[0].z = opengl->vertex[1].z = opengl->vertex[2].z = opengl->vertex[3].z = 0.0f; |
| 889 | opengl->vertex[0].x = opengl->vertex[1].x = - (float)opengl->picture_width / 2.0f; |
| 890 | opengl->vertex[2].x = opengl->vertex[3].x = (float)opengl->picture_width / 2.0f; |
| 891 | opengl->vertex[1].y = opengl->vertex[2].y = - (float)opengl->picture_height / 2.0f; |
| 892 | opengl->vertex[0].y = opengl->vertex[3].y = (float)opengl->picture_height / 2.0f; |
| 893 | |
| 894 | opengl_get_texture_size(opengl, opengl->width, opengl->height, &tex_w, &tex_h); |
| 895 | |
| 896 | opengl->vertex[0].s0 = 0.0f; |
| 897 | opengl->vertex[0].t0 = 0.0f; |
| 898 | opengl->vertex[1].s0 = 0.0f; |
| 899 | opengl->vertex[1].t0 = (float)opengl->height / (float)tex_h; |
| 900 | opengl->vertex[2].s0 = (float)opengl->width / (float)tex_w; |
| 901 | opengl->vertex[2].t0 = (float)opengl->height / (float)tex_h; |
| 902 | opengl->vertex[3].s0 = (float)opengl->width / (float)tex_w; |
| 903 | opengl->vertex[3].t0 = 0.0f; |
| 904 | |
| 905 | opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, opengl->vertex_buffer); |
| 906 | opengl->glprocs.glBufferData(FF_GL_ARRAY_BUFFER, sizeof(opengl->vertex), opengl->vertex, FF_GL_STATIC_DRAW); |
| 907 | opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, 0); |
| 908 | OPENGL_ERROR_CHECK(opengl); |
| 909 | return 0; |
| 910 | fail: |
| 911 | return AVERROR_EXTERNAL; |
| 912 | } |
| 913 | |
| 914 | static int opengl_prepare(OpenGLContext *opengl) |
| 915 | { |
| 916 | int i; |
| 917 | opengl->glprocs.glUseProgram(opengl->program); |
| 918 | opengl->glprocs.glUniformMatrix4fv(opengl->projection_matrix_location, 1, GL_FALSE, opengl->projection_matrix); |
| 919 | opengl->glprocs.glUniformMatrix4fv(opengl->model_view_matrix_location, 1, GL_FALSE, opengl->model_view_matrix); |
| 920 | for (i = 0; i < 4; i++) |
| 921 | if (opengl->texture_location[i] != -1) { |
| 922 | opengl->glprocs.glActiveTexture(GL_TEXTURE0 + i); |
| 923 | glBindTexture(GL_TEXTURE_2D, opengl->texture_name[i]); |
| 924 | opengl->glprocs.glUniform1i(opengl->texture_location[i], i); |
| 925 | } |
| 926 | if (opengl->color_map_location != -1) |
| 927 | opengl->glprocs.glUniformMatrix4fv(opengl->color_map_location, 1, GL_FALSE, opengl->color_map); |
| 928 | if (opengl->chroma_div_h_location != -1) |
| 929 | opengl->glprocs.glUniform1f(opengl->chroma_div_h_location, opengl->chroma_div_h); |
| 930 | if (opengl->chroma_div_w_location != -1) |
| 931 | opengl->glprocs.glUniform1f(opengl->chroma_div_w_location, opengl->chroma_div_w); |
| 932 | |
| 933 | OPENGL_ERROR_CHECK(opengl); |
| 934 | return 0; |
| 935 | fail: |
| 936 | return AVERROR_EXTERNAL; |
| 937 | } |
| 938 | |
| 939 | static int opengl_create_window(AVFormatContext *h) |
| 940 | { |
| 941 | OpenGLContext *opengl = h->priv_data; |
| 942 | int ret; |
| 943 | |
| 944 | if (!opengl->no_window) { |
| 945 | #if HAVE_SDL |
| 946 | if ((ret = opengl_sdl_create_window(h)) < 0) { |
| 947 | av_log(opengl, AV_LOG_ERROR, "Cannot create default SDL window.\n"); |
| 948 | return ret; |
| 949 | } |
| 950 | #else |
| 951 | av_log(opengl, AV_LOG_ERROR, "FFmpeg is compiled without SDL. Cannot create default window.\n"); |
| 952 | return AVERROR(ENOSYS); |
| 953 | #endif |
| 954 | } else { |
| 955 | AVDeviceRect message; |
| 956 | message.x = message.y = 0; |
| 957 | message.width = opengl->window_width; |
| 958 | message.height = opengl->window_height; |
| 959 | if ((ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_CREATE_WINDOW_BUFFER, |
| 960 | &message , sizeof(message))) < 0) { |
| 961 | av_log(opengl, AV_LOG_ERROR, "Application failed to create window buffer.\n"); |
| 962 | return ret; |
| 963 | } |
| 964 | if ((ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0)) < 0) { |
| 965 | av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n"); |
| 966 | return ret; |
| 967 | } |
| 968 | } |
| 969 | return 0; |
| 970 | } |
| 971 | |
| 972 | static int opengl_release_window(AVFormatContext *h) |
| 973 | { |
| 974 | int ret; |
| 975 | OpenGLContext *opengl = h->priv_data; |
| 976 | if (!opengl->no_window) { |
| 977 | #if HAVE_SDL |
| 978 | SDL_Quit(); |
| 979 | #endif |
| 980 | } else if ((ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER, NULL , 0)) < 0) { |
| 981 | av_log(opengl, AV_LOG_ERROR, "Application failed to release window buffer.\n"); |
| 982 | return ret; |
| 983 | } |
| 984 | return 0; |
| 985 | } |
| 986 | |
| 987 | static av_cold int opengl_write_trailer(AVFormatContext *h) |
| 988 | { |
| 989 | OpenGLContext *opengl = h->priv_data; |
| 990 | |
| 991 | if (opengl->no_window && |
| 992 | avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0) < 0) |
| 993 | av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n"); |
| 994 | |
| 995 | opengl_deinit_context(opengl); |
| 996 | opengl_release_window(h); |
| 997 | |
| 998 | return 0; |
| 999 | } |
| 1000 | |
| 1001 | static av_cold int opengl_init_context(OpenGLContext *opengl) |
| 1002 | { |
| 1003 | int i, ret; |
| 1004 | const AVPixFmtDescriptor *desc; |
| 1005 | |
| 1006 | if ((ret = opengl_compile_shaders(opengl, opengl->pix_fmt)) < 0) |
| 1007 | goto fail; |
| 1008 | |
| 1009 | desc = av_pix_fmt_desc_get(opengl->pix_fmt); |
| 1010 | av_assert0(desc->nb_components > 0 && desc->nb_components <= 4); |
| 1011 | glGenTextures(desc->nb_components, opengl->texture_name); |
| 1012 | |
| 1013 | opengl->glprocs.glGenBuffers(2, &opengl->index_buffer); |
| 1014 | if (!opengl->index_buffer || !opengl->vertex_buffer) { |
| 1015 | av_log(opengl, AV_LOG_ERROR, "Buffer generation failed.\n"); |
| 1016 | ret = AVERROR_EXTERNAL; |
| 1017 | goto fail; |
| 1018 | } |
| 1019 | |
| 1020 | opengl_configure_texture(opengl, opengl->texture_name[0], opengl->width, opengl->height); |
| 1021 | if (desc->nb_components > 1) { |
| 1022 | int has_alpha = desc->flags & AV_PIX_FMT_FLAG_ALPHA; |
| 1023 | int num_planes = desc->nb_components - (has_alpha ? 1 : 0); |
| 1024 | if (opengl->non_pow_2_textures) { |
| 1025 | opengl->chroma_div_w = 1.0f; |
| 1026 | opengl->chroma_div_h = 1.0f; |
| 1027 | } else { |
| 1028 | opengl->chroma_div_w = 1 << desc->log2_chroma_w; |
| 1029 | opengl->chroma_div_h = 1 << desc->log2_chroma_h; |
| 1030 | } |
| 1031 | for (i = 1; i < num_planes; i++) |
| 1032 | if (opengl->non_pow_2_textures) |
| 1033 | opengl_configure_texture(opengl, opengl->texture_name[i], |
| 1034 | FF_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w), |
| 1035 | FF_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h)); |
| 1036 | else |
| 1037 | opengl_configure_texture(opengl, opengl->texture_name[i], opengl->width, opengl->height); |
| 1038 | if (has_alpha) |
| 1039 | opengl_configure_texture(opengl, opengl->texture_name[3], opengl->width, opengl->height); |
| 1040 | } |
| 1041 | |
| 1042 | opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, opengl->index_buffer); |
| 1043 | opengl->glprocs.glBufferData(FF_GL_ELEMENT_ARRAY_BUFFER, sizeof(g_index), g_index, FF_GL_STATIC_DRAW); |
| 1044 | opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, 0); |
| 1045 | |
| 1046 | glEnable(GL_BLEND); |
| 1047 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
| 1048 | |
| 1049 | glClearColor((float)opengl->background[0] / 255.0f, (float)opengl->background[1] / 255.0f, |
| 1050 | (float)opengl->background[2] / 255.0f, 1.0f); |
| 1051 | |
| 1052 | ret = AVERROR_EXTERNAL; |
| 1053 | OPENGL_ERROR_CHECK(opengl); |
| 1054 | |
| 1055 | return 0; |
| 1056 | fail: |
| 1057 | return ret; |
| 1058 | } |
| 1059 | |
| 1060 | static av_cold int opengl_write_header(AVFormatContext *h) |
| 1061 | { |
| 1062 | OpenGLContext *opengl = h->priv_data; |
| 1063 | AVStream *st; |
| 1064 | int ret; |
| 1065 | |
| 1066 | if (h->nb_streams != 1 || |
| 1067 | h->streams[0]->codec->codec_type != AVMEDIA_TYPE_VIDEO || |
| 1068 | h->streams[0]->codec->codec_id != AV_CODEC_ID_RAWVIDEO) { |
| 1069 | av_log(opengl, AV_LOG_ERROR, "Only a single video stream is supported.\n"); |
| 1070 | return AVERROR(EINVAL); |
| 1071 | } |
| 1072 | st = h->streams[0]; |
| 1073 | opengl->width = st->codec->width; |
| 1074 | opengl->height = st->codec->height; |
| 1075 | opengl->pix_fmt = st->codec->pix_fmt; |
| 1076 | if (!opengl->window_width) |
| 1077 | opengl->window_width = opengl->width; |
| 1078 | if (!opengl->window_height) |
| 1079 | opengl->window_height = opengl->height; |
| 1080 | |
| 1081 | if (!opengl->window_title && !opengl->no_window) |
| 1082 | opengl->window_title = av_strdup(h->filename); |
| 1083 | |
| 1084 | if ((ret = opengl_create_window(h))) |
| 1085 | goto fail; |
| 1086 | |
| 1087 | if ((ret = opengl_read_limits(opengl)) < 0) |
| 1088 | goto fail; |
| 1089 | |
| 1090 | if (opengl->width > opengl->max_texture_size || opengl->height > opengl->max_texture_size) { |
| 1091 | av_log(opengl, AV_LOG_ERROR, "Too big picture %dx%d, max supported size is %dx%d\n", |
| 1092 | opengl->width, opengl->height, opengl->max_texture_size, opengl->max_texture_size); |
| 1093 | ret = AVERROR(EINVAL); |
| 1094 | goto fail; |
| 1095 | } |
| 1096 | |
| 1097 | if ((ret = opengl_load_procedures(opengl)) < 0) |
| 1098 | goto fail; |
| 1099 | |
| 1100 | opengl_fill_color_map(opengl); |
| 1101 | opengl_get_texture_params(opengl); |
| 1102 | |
| 1103 | if ((ret = opengl_init_context(opengl)) < 0) |
| 1104 | goto fail; |
| 1105 | |
| 1106 | if ((ret = opengl_prepare_vertex(h)) < 0) |
| 1107 | goto fail; |
| 1108 | |
| 1109 | glClear(GL_COLOR_BUFFER_BIT); |
| 1110 | |
| 1111 | #if HAVE_SDL |
| 1112 | if (!opengl->no_window) |
| 1113 | SDL_GL_SwapBuffers(); |
| 1114 | #endif |
| 1115 | if (opengl->no_window && |
| 1116 | (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER, NULL , 0)) < 0) { |
| 1117 | av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n"); |
| 1118 | goto fail; |
| 1119 | } |
| 1120 | |
| 1121 | ret = AVERROR_EXTERNAL; |
| 1122 | OPENGL_ERROR_CHECK(opengl); |
| 1123 | |
| 1124 | opengl->inited = 1; |
| 1125 | return 0; |
| 1126 | |
| 1127 | fail: |
| 1128 | opengl_write_trailer(h); |
| 1129 | return ret; |
| 1130 | } |
| 1131 | |
| 1132 | static uint8_t* opengl_get_plane_pointer(OpenGLContext *opengl, AVPacket *pkt, int comp_index, |
| 1133 | const AVPixFmtDescriptor *desc) |
| 1134 | { |
| 1135 | uint8_t *data = pkt->data; |
| 1136 | int wordsize = opengl_type_size(opengl->type); |
| 1137 | int width_chroma = FF_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w); |
| 1138 | int height_chroma = FF_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h); |
| 1139 | int plane = desc->comp[comp_index].plane; |
| 1140 | |
| 1141 | switch(plane) { |
| 1142 | case 0: |
| 1143 | break; |
| 1144 | case 1: |
| 1145 | data += opengl->width * opengl->height * wordsize; |
| 1146 | break; |
| 1147 | case 2: |
| 1148 | data += opengl->width * opengl->height * wordsize; |
| 1149 | data += width_chroma * height_chroma * wordsize; |
| 1150 | break; |
| 1151 | case 3: |
| 1152 | data += opengl->width * opengl->height * wordsize; |
| 1153 | data += 2 * width_chroma * height_chroma * wordsize; |
| 1154 | break; |
| 1155 | default: |
| 1156 | return NULL; |
| 1157 | } |
| 1158 | return data; |
| 1159 | } |
| 1160 | |
| 1161 | #define LOAD_TEXTURE_DATA(comp_index, sub) \ |
| 1162 | { \ |
| 1163 | int width = sub ? FF_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w) : opengl->width; \ |
| 1164 | int height = sub ? FF_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h): opengl->height; \ |
| 1165 | uint8_t *data; \ |
| 1166 | int plane = desc->comp[comp_index].plane; \ |
| 1167 | \ |
| 1168 | glBindTexture(GL_TEXTURE_2D, opengl->texture_name[comp_index]); \ |
| 1169 | if (!is_pkt) { \ |
| 1170 | GLint length = ((AVFrame *)input)->linesize[plane]; \ |
| 1171 | int bytes_per_pixel = opengl_type_size(opengl->type); \ |
| 1172 | if (!(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) \ |
| 1173 | bytes_per_pixel *= desc->nb_components; \ |
| 1174 | data = ((AVFrame *)input)->data[plane]; \ |
| 1175 | if (!(length % bytes_per_pixel) && \ |
| 1176 | (opengl->unpack_subimage || ((length / bytes_per_pixel) == width))) { \ |
| 1177 | length /= bytes_per_pixel; \ |
| 1178 | if (length != width) \ |
| 1179 | glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, length); \ |
| 1180 | glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, \ |
| 1181 | opengl->format, opengl->type, data); \ |
| 1182 | if (length != width) \ |
| 1183 | glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, 0); \ |
| 1184 | } else { \ |
| 1185 | int h; \ |
| 1186 | for (h = 0; h < height; h++) { \ |
| 1187 | glTexSubImage2D(GL_TEXTURE_2D, 0, 0, h, width, 1, \ |
| 1188 | opengl->format, opengl->type, data); \ |
| 1189 | data += length; \ |
| 1190 | } \ |
| 1191 | } \ |
| 1192 | } else { \ |
| 1193 | data = opengl_get_plane_pointer(opengl, input, comp_index, desc); \ |
| 1194 | glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, \ |
| 1195 | opengl->format, opengl->type, data); \ |
| 1196 | } \ |
| 1197 | } |
| 1198 | |
| 1199 | static int opengl_draw(AVFormatContext *h, void *input, int repaint, int is_pkt) |
| 1200 | { |
| 1201 | OpenGLContext *opengl = h->priv_data; |
| 1202 | enum AVPixelFormat pix_fmt = h->streams[0]->codec->pix_fmt; |
| 1203 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| 1204 | int ret; |
| 1205 | |
| 1206 | #if HAVE_SDL |
| 1207 | if (!opengl->no_window && (ret = opengl_sdl_process_events(h)) < 0) |
| 1208 | goto fail; |
| 1209 | #endif |
| 1210 | if (opengl->no_window && |
| 1211 | (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, NULL , 0)) < 0) { |
| 1212 | av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n"); |
| 1213 | goto fail; |
| 1214 | } |
| 1215 | |
| 1216 | glClear(GL_COLOR_BUFFER_BIT); |
| 1217 | |
| 1218 | if (!repaint) { |
| 1219 | if (is_pkt) |
| 1220 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
| 1221 | LOAD_TEXTURE_DATA(0, 0) |
| 1222 | if (desc->flags & AV_PIX_FMT_FLAG_PLANAR) { |
| 1223 | LOAD_TEXTURE_DATA(1, 1) |
| 1224 | LOAD_TEXTURE_DATA(2, 1) |
| 1225 | if (desc->flags & AV_PIX_FMT_FLAG_ALPHA) |
| 1226 | LOAD_TEXTURE_DATA(3, 0) |
| 1227 | } |
| 1228 | } |
| 1229 | ret = AVERROR_EXTERNAL; |
| 1230 | OPENGL_ERROR_CHECK(opengl); |
| 1231 | |
| 1232 | if ((ret = opengl_prepare(opengl)) < 0) |
| 1233 | goto fail; |
| 1234 | |
| 1235 | opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, opengl->vertex_buffer); |
| 1236 | opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, opengl->index_buffer); |
| 1237 | opengl->glprocs.glVertexAttribPointer(opengl->position_attrib, 3, GL_FLOAT, GL_FALSE, sizeof(OpenGLVertexInfo), 0); |
| 1238 | opengl->glprocs.glEnableVertexAttribArray(opengl->position_attrib); |
| 1239 | opengl->glprocs.glVertexAttribPointer(opengl->texture_coords_attrib, 2, GL_FLOAT, GL_FALSE, sizeof(OpenGLVertexInfo), 12); |
| 1240 | opengl->glprocs.glEnableVertexAttribArray(opengl->texture_coords_attrib); |
| 1241 | |
| 1242 | glDrawElements(GL_TRIANGLES, FF_ARRAY_ELEMS(g_index), GL_UNSIGNED_SHORT, 0); |
| 1243 | |
| 1244 | ret = AVERROR_EXTERNAL; |
| 1245 | OPENGL_ERROR_CHECK(opengl); |
| 1246 | |
| 1247 | #if HAVE_SDL |
| 1248 | if (!opengl->no_window) |
| 1249 | SDL_GL_SwapBuffers(); |
| 1250 | #endif |
| 1251 | if (opengl->no_window && |
| 1252 | (ret = avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER, NULL , 0)) < 0) { |
| 1253 | av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n"); |
| 1254 | goto fail; |
| 1255 | } |
| 1256 | |
| 1257 | return 0; |
| 1258 | fail: |
| 1259 | return ret; |
| 1260 | } |
| 1261 | |
| 1262 | static int opengl_write_packet(AVFormatContext *h, AVPacket *pkt) |
| 1263 | { |
| 1264 | return opengl_draw(h, pkt, 0, 1); |
| 1265 | } |
| 1266 | |
| 1267 | static int opengl_write_frame(AVFormatContext *h, int stream_index, |
| 1268 | AVFrame **frame, unsigned flags) |
| 1269 | { |
| 1270 | if ((flags & AV_WRITE_UNCODED_FRAME_QUERY)) |
| 1271 | return 0; |
| 1272 | return opengl_draw(h, *frame, 0, 0); |
| 1273 | } |
| 1274 | |
| 1275 | #define OFFSET(x) offsetof(OpenGLContext, x) |
| 1276 | #define ENC AV_OPT_FLAG_ENCODING_PARAM |
| 1277 | static const AVOption options[] = { |
| 1278 | { "background", "set background color", OFFSET(background), AV_OPT_TYPE_COLOR, {.str = "black"}, CHAR_MIN, CHAR_MAX, ENC }, |
| 1279 | { "no_window", "disable default window", OFFSET(no_window), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, ENC }, |
| 1280 | { "window_title", "set window title", OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, ENC }, |
| 1281 | { "window_size", "set window size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, ENC }, |
| 1282 | { NULL } |
| 1283 | }; |
| 1284 | |
| 1285 | static const AVClass opengl_class = { |
| 1286 | .class_name = "opengl outdev", |
| 1287 | .item_name = av_default_item_name, |
| 1288 | .option = options, |
| 1289 | .version = LIBAVUTIL_VERSION_INT, |
| 1290 | .category = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT, |
| 1291 | }; |
| 1292 | |
| 1293 | AVOutputFormat ff_opengl_muxer = { |
| 1294 | .name = "opengl", |
| 1295 | .long_name = NULL_IF_CONFIG_SMALL("OpenGL output"), |
| 1296 | .priv_data_size = sizeof(OpenGLContext), |
| 1297 | .audio_codec = AV_CODEC_ID_NONE, |
| 1298 | .video_codec = AV_CODEC_ID_RAWVIDEO, |
| 1299 | .write_header = opengl_write_header, |
| 1300 | .write_packet = opengl_write_packet, |
| 1301 | .write_uncoded_frame = opengl_write_frame, |
| 1302 | .write_trailer = opengl_write_trailer, |
| 1303 | .control_message = opengl_control_message, |
| 1304 | .flags = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS, |
| 1305 | .priv_class = &opengl_class, |
| 1306 | }; |