FFmpeg  4.4
opengl_enc.c
Go to the documentation of this file.
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 <stddef.h>
29 
30 #include "config.h"
31 
32 #if HAVE_WINDOWS_H
33 #define WIN32_LEAN_AND_MEAN
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 CONFIG_SDL2
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 planar 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);
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);
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
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
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
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 CONFIG_SDL2
177  SDL_Window *window;
178  SDL_GLContext glcontext;
179 #endif
181 
182  int inited; ///< Set to 1 when write_header was successfully called.
183  uint8_t background[4]; ///< Background color
184  int no_window; ///< 0 for create default window
185  char *window_title; ///< Title of the window
186 
187  /* OpenGL implementation limits */
188  GLint max_texture_size; ///< Maximum texture size
189  GLint max_viewport_width; ///< Maximum viewport size
190  GLint max_viewport_height; ///< Maximum viewport size
191  int non_pow_2_textures; ///< 1 when non power of 2 textures are supported
192  int unpack_subimage; ///< 1 when GL_EXT_unpack_subimage is available
193 
194  /* Current OpenGL configuration */
195  GLuint program; ///< Shader program
196  GLuint vertex_shader; ///< Vertex shader
197  GLuint fragment_shader; ///< Fragment shader for current pix_pmt
198  GLuint texture_name[4]; ///< Textures' IDs
199  GLuint index_buffer; ///< Index buffer
200  GLuint vertex_buffer; ///< Vertex buffer
202  GLint projection_matrix_location; ///< Uniforms' locations
208  GLint position_attrib; ///< Attibutes' locations
210 
211  GLfloat projection_matrix[16]; ///< Projection matrix
212  GLfloat model_view_matrix[16]; ///< Modev view matrix
213  GLfloat color_map[16]; ///< RGBA color map matrix
214  GLfloat chroma_div_w; ///< Chroma subsampling w ratio
215  GLfloat chroma_div_h; ///< Chroma subsampling h ratio
216 
217  /* Stream information */
218  GLenum format;
219  GLenum type;
220  int width; ///< Stream width
221  int height; ///< Stream height
222  enum AVPixelFormat pix_fmt; ///< Stream pixel format
223  int picture_width; ///< Rendered width
224  int picture_height; ///< Rendered height
227 } OpenGLContext;
228 
229 static const struct OpenGLFormatDesc {
231  const char * const * fragment_shader;
232  GLenum format;
233  GLenum type;
234 } opengl_format_desc[] = {
250  { AV_PIX_FMT_RGB24, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_BYTE },
251  { AV_PIX_FMT_BGR24, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_BYTE },
252  { AV_PIX_FMT_0RGB, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
253  { AV_PIX_FMT_RGB0, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
254  { AV_PIX_FMT_0BGR, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
255  { AV_PIX_FMT_BGR0, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
256  { AV_PIX_FMT_RGB565, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 },
257  { AV_PIX_FMT_BGR565, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 },
262  { AV_PIX_FMT_RGB48, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_SHORT },
263  { AV_PIX_FMT_BGR48, &FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET, GL_RGB, GL_UNSIGNED_SHORT },
264  { AV_PIX_FMT_ARGB, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
265  { AV_PIX_FMT_RGBA, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
266  { AV_PIX_FMT_ABGR, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
267  { AV_PIX_FMT_BGRA, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_BYTE },
268  { AV_PIX_FMT_RGBA64, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_SHORT },
269  { AV_PIX_FMT_BGRA64, &FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET, GL_RGBA, GL_UNSIGNED_SHORT },
276  { AV_PIX_FMT_NONE, NULL }
277 };
278 
280 static int opengl_draw(AVFormatContext *h, void *intput, int repaint, int is_pkt);
281 static av_cold int opengl_init_context(OpenGLContext *opengl);
282 
284 {
285  glDeleteTextures(4, opengl->texture_name);
286  opengl->texture_name[0] = opengl->texture_name[1] =
287  opengl->texture_name[2] = opengl->texture_name[3] = 0;
288  if (opengl->glprocs.glUseProgram)
289  opengl->glprocs.glUseProgram(0);
290  if (opengl->glprocs.glDeleteProgram) {
291  opengl->glprocs.glDeleteProgram(opengl->program);
292  opengl->program = 0;
293  }
294  if (opengl->glprocs.glDeleteShader) {
295  opengl->glprocs.glDeleteShader(opengl->vertex_shader);
296  opengl->glprocs.glDeleteShader(opengl->fragment_shader);
297  opengl->vertex_shader = opengl->fragment_shader = 0;
298  }
299  if (opengl->glprocs.glBindBuffer) {
302  }
303  if (opengl->glprocs.glDeleteBuffers) {
304  opengl->glprocs.glDeleteBuffers(2, &opengl->index_buffer);
305  opengl->vertex_buffer = opengl->index_buffer = 0;
306  }
307 }
308 
310 {
311  int ret = 0;
312  OpenGLContext *opengl = h->priv_data;
313  opengl->window_width = width;
314  opengl->window_height = height;
315  if (opengl->inited) {
316  if (opengl->no_window &&
318  av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
319  goto end;
320  }
321  if ((ret = opengl_prepare_vertex(h)) < 0)
322  goto end;
323  ret = opengl_draw(h, NULL, 1, 0);
324  }
325  end:
326  return ret;
327 }
328 
329 static int opengl_control_message(AVFormatContext *h, int type, void *data, size_t data_size)
330 {
331  OpenGLContext *opengl = h->priv_data;
332  switch(type) {
334  if (data) {
336  return opengl_resize(h, message->width, message->height);
337  }
338  return AVERROR(EINVAL);
340  return opengl_resize(h, opengl->window_width, opengl->window_height);
341  }
342  return AVERROR(ENOSYS);
343 }
344 
345 #if CONFIG_SDL2
346 static int opengl_sdl_process_events(AVFormatContext *h)
347 {
348  OpenGLContext *opengl = h->priv_data;
350  SDL_Event event;
351  SDL_PumpEvents();
352  while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT) > 0) {
353  switch (event.type) {
354  case SDL_QUIT:
355  return AVERROR(EIO);
356  case SDL_KEYDOWN:
357  switch (event.key.keysym.sym) {
358  case SDLK_ESCAPE:
359  case SDLK_q:
360  return AVERROR(EIO);
361  }
362  return 0;
363  case SDL_WINDOWEVENT:
364  switch(event.window.event) {
365  case SDL_WINDOWEVENT_RESIZED:
366  case SDL_WINDOWEVENT_SIZE_CHANGED:
367  SDL_GL_GetDrawableSize(opengl->window, &message.width, &message.height);
369  default:
370  break;
371  }
372  }
373  }
374  return 0;
375 }
376 
377 static int av_cold opengl_sdl_create_window(AVFormatContext *h)
378 {
379  OpenGLContext *opengl = h->priv_data;
381  if (SDL_Init(SDL_INIT_VIDEO)) {
382  av_log(opengl, AV_LOG_ERROR, "Unable to initialize SDL: %s\n", SDL_GetError());
383  return AVERROR_EXTERNAL;
384  }
385  opengl->window = SDL_CreateWindow(opengl->window_title,
386  SDL_WINDOWPOS_UNDEFINED,
387  SDL_WINDOWPOS_UNDEFINED,
388  opengl->window_width, opengl->window_height,
389  SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL);
390  if (!opengl->window) {
391  av_log(opengl, AV_LOG_ERROR, "Unable to create default window: %s\n", SDL_GetError());
392  return AVERROR_EXTERNAL;
393  }
394  opengl->glcontext = SDL_GL_CreateContext(opengl->window);
395  if (!opengl->glcontext) {
396  av_log(opengl, AV_LOG_ERROR, "Unable to create OpenGL context on default window: %s\n", SDL_GetError());
397  return AVERROR_EXTERNAL;
398  }
399  SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
400  SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
401  SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
402  SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
403  SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
404  av_log(opengl, AV_LOG_INFO, "SDL driver: '%s'.\n", SDL_GetCurrentVideoDriver());
405  SDL_GL_GetDrawableSize(opengl->window, &message.width, &message.height);
407 }
408 
409 static int av_cold opengl_sdl_load_procedures(OpenGLContext *opengl)
410 {
411  FFOpenGLFunctions *procs = &opengl->glprocs;
412 
413 #define LOAD_OPENGL_FUN(name, type) \
414  procs->name = (type)SDL_GL_GetProcAddress(#name); \
415  if (!procs->name) { \
416  av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \
417  return AVERROR(ENOSYS); \
418  }
419 
425  LOAD_OPENGL_FUN(glGetAttribLocation, FF_PFNGLGETATTRIBLOCATIONPROC)
426  LOAD_OPENGL_FUN(glGetUniformLocation, FF_PFNGLGETUNIFORMLOCATIONPROC)
429  LOAD_OPENGL_FUN(glUniformMatrix4fv, FF_PFNGLUNIFORMMATRIX4FVPROC)
435  LOAD_OPENGL_FUN(glGetProgramInfoLog, FF_PFNGLGETPROGRAMINFOLOGPROC)
442  LOAD_OPENGL_FUN(glGetShaderInfoLog, FF_PFNGLGETSHADERINFOLOGPROC)
443  LOAD_OPENGL_FUN(glEnableVertexAttribArray, FF_PFNGLENABLEVERTEXATTRIBARRAYPROC)
444  LOAD_OPENGL_FUN(glVertexAttribPointer, FF_PFNGLVERTEXATTRIBPOINTERPROC)
445 
446  return 0;
447 
448 #undef LOAD_OPENGL_FUN
449 }
450 #endif /* CONFIG_SDL2 */
451 
452 #if defined(__APPLE__)
453 static int av_cold opengl_load_procedures(OpenGLContext *opengl)
454 {
455  FFOpenGLFunctions *procs = &opengl->glprocs;
456 
457 #if CONFIG_SDL2
458  if (!opengl->no_window)
459  return opengl_sdl_load_procedures(opengl);
460 #endif
461 
462  procs->glActiveTexture = glActiveTexture;
463  procs->glGenBuffers = glGenBuffers;
464  procs->glDeleteBuffers = glDeleteBuffers;
465  procs->glBufferData = glBufferData;
466  procs->glBindBuffer = glBindBuffer;
467  procs->glGetAttribLocation = glGetAttribLocation;
468  procs->glGetUniformLocation = glGetUniformLocation;
469  procs->glUniform1f = glUniform1f;
470  procs->glUniform1i = glUniform1i;
471  procs->glUniformMatrix4fv = glUniformMatrix4fv;
472  procs->glCreateProgram = glCreateProgram;
473  procs->glDeleteProgram = glDeleteProgram;
474  procs->glUseProgram = glUseProgram;
475  procs->glLinkProgram = glLinkProgram;
476  procs->glGetProgramiv = glGetProgramiv;
477  procs->glGetProgramInfoLog = glGetProgramInfoLog;
478  procs->glAttachShader = glAttachShader;
479  procs->glCreateShader = glCreateShader;
480  procs->glDeleteShader = glDeleteShader;
481  procs->glCompileShader = glCompileShader;
482  procs->glShaderSource = glShaderSource;
483  procs->glGetShaderiv = glGetShaderiv;
484  procs->glGetShaderInfoLog = glGetShaderInfoLog;
485  procs->glEnableVertexAttribArray = glEnableVertexAttribArray;
486  procs->glVertexAttribPointer = (FF_PFNGLVERTEXATTRIBPOINTERPROC) glVertexAttribPointer;
487  return 0;
488 }
489 #else
491 {
492  FFOpenGLFunctions *procs = &opengl->glprocs;
493 
494 #if HAVE_GLXGETPROCADDRESS
495 #define SelectedGetProcAddress glXGetProcAddress
496 #elif HAVE_WGLGETPROCADDRESS
497 #define SelectedGetProcAddress wglGetProcAddress
498 #endif
499 
500 #define LOAD_OPENGL_FUN(name, type) \
501  procs->name = (type)SelectedGetProcAddress(#name); \
502  if (!procs->name) { \
503  av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \
504  return AVERROR(ENOSYS); \
505  }
506 
507 #if CONFIG_SDL2
508  if (!opengl->no_window)
509  return opengl_sdl_load_procedures(opengl);
510 #endif
511 
517  LOAD_OPENGL_FUN(glGetAttribLocation, FF_PFNGLGETATTRIBLOCATIONPROC)
518  LOAD_OPENGL_FUN(glGetUniformLocation, FF_PFNGLGETUNIFORMLOCATIONPROC)
521  LOAD_OPENGL_FUN(glUniformMatrix4fv, FF_PFNGLUNIFORMMATRIX4FVPROC)
527  LOAD_OPENGL_FUN(glGetProgramInfoLog, FF_PFNGLGETPROGRAMINFOLOGPROC)
534  LOAD_OPENGL_FUN(glGetShaderInfoLog, FF_PFNGLGETSHADERINFOLOGPROC)
535  LOAD_OPENGL_FUN(glEnableVertexAttribArray, FF_PFNGLENABLEVERTEXATTRIBARRAYPROC)
536  LOAD_OPENGL_FUN(glVertexAttribPointer, FF_PFNGLVERTEXATTRIBPOINTERPROC)
537 
538  return 0;
539 
540 #undef SelectedGetProcAddress
541 #undef LOAD_OPENGL_FUN
542 }
543 #endif
544 
545 static void opengl_make_identity(float matrix[16])
546 {
547  memset(matrix, 0, 16 * sizeof(float));
548  matrix[0] = matrix[5] = matrix[10] = matrix[15] = 1.0f;
549 }
550 
551 static void opengl_make_ortho(float matrix[16], float left, float right,
552  float bottom, float top, float nearZ, float farZ)
553 {
554  float ral = right + left;
555  float rsl = right - left;
556  float tab = top + bottom;
557  float tsb = top - bottom;
558  float fan = farZ + nearZ;
559  float fsn = farZ - nearZ;
560 
561  memset(matrix, 0, 16 * sizeof(float));
562  matrix[0] = 2.0f / rsl;
563  matrix[5] = 2.0f / tsb;
564  matrix[10] = -2.0f / fsn;
565  matrix[12] = -ral / rsl;
566  matrix[13] = -tab / tsb;
567  matrix[14] = -fan / fsn;
568  matrix[15] = 1.0f;
569 }
570 
572 {
573  OpenGLContext *opengl = h->priv_data;
574  static const struct{
575  const char *extension;
576  int major;
577  int minor;
578  } required_extensions[] = {
579  { "GL_ARB_multitexture", 1, 3 },
580  { "GL_ARB_vertex_buffer_object", 1, 5 }, //GLX_ARB_vertex_buffer_object
581  { "GL_ARB_vertex_shader", 2, 0 },
582  { "GL_ARB_fragment_shader", 2, 0 },
583  { "GL_ARB_shader_objects", 2, 0 },
584  { NULL, 0, 0 }
585  };
586  int i, major, minor;
587  const char *extensions, *version;
588 
589  version = glGetString(GL_VERSION);
590  extensions = glGetString(GL_EXTENSIONS);
591  if (!version || !extensions) {
592  av_log(h, AV_LOG_ERROR, "No OpenGL context initialized for the current thread\n");
593  return AVERROR(ENOSYS);
594  }
595 
596  av_log(h, AV_LOG_DEBUG, "OpenGL version: %s\n", version);
597  sscanf(version, "%d.%d", &major, &minor);
598 
599  for (i = 0; required_extensions[i].extension; i++) {
600  if (major < required_extensions[i].major &&
601  (major == required_extensions[i].major && minor < required_extensions[i].minor) &&
602  !strstr(extensions, required_extensions[i].extension)) {
603  av_log(h, AV_LOG_ERROR, "Required extension %s is not supported.\n",
604  required_extensions[i].extension);
605  av_log(h, AV_LOG_DEBUG, "Supported extensions are: %s\n", extensions);
606  return AVERROR(ENOSYS);
607  }
608  }
609  glGetIntegerv(GL_MAX_TEXTURE_SIZE, &opengl->max_texture_size);
610  glGetIntegerv(GL_MAX_VIEWPORT_DIMS, &opengl->max_viewport_width);
611  opengl->non_pow_2_textures = major >= 2 || strstr(extensions, "GL_ARB_texture_non_power_of_two");
612 #if defined(GL_ES_VERSION_2_0)
613  opengl->unpack_subimage = !!strstr(extensions, "GL_EXT_unpack_subimage");
614 #else
615  opengl->unpack_subimage = 1;
616 #endif
617 
618  av_log(h, AV_LOG_DEBUG, "Non Power of 2 textures support: %s\n", opengl->non_pow_2_textures ? "Yes" : "No");
619  av_log(h, AV_LOG_DEBUG, "Unpack Subimage extension support: %s\n", opengl->unpack_subimage ? "Yes" : "No");
620  av_log(h, AV_LOG_DEBUG, "Max texture size: %dx%d\n", opengl->max_texture_size, opengl->max_texture_size);
621  av_log(h, AV_LOG_DEBUG, "Max viewport size: %dx%d\n",
622  opengl->max_viewport_width, opengl->max_viewport_height);
623 
624  OPENGL_ERROR_CHECK(opengl);
625  return 0;
626  fail:
627  return AVERROR_EXTERNAL;
628 }
629 
631 {
632  int i;
633  for (i = 0; i < FF_ARRAY_ELEMS(opengl_format_desc); i++) {
634  if (opengl_format_desc[i].fixel_format == format)
636  }
637  return NULL;
638 }
639 
640 static int opengl_type_size(GLenum type)
641 {
642  switch(type) {
643  case GL_UNSIGNED_SHORT:
645  case GL_UNSIGNED_SHORT_5_6_5:
646  return 2;
647  case GL_UNSIGNED_BYTE:
650  default:
651  break;
652  }
653  return 1;
654 }
655 
657 {
658  int i;
659  for (i = 0; i < FF_ARRAY_ELEMS(opengl_format_desc); i++) {
660  if (opengl_format_desc[i].fixel_format == opengl->pix_fmt) {
661  opengl->format = opengl_format_desc[i].format;
662  opengl->type = opengl_format_desc[i].type;
663  break;
664  }
665  }
666 }
667 
669 {
670  AVRational sar, dar; /* sample and display aspect ratios */
671  OpenGLContext *opengl = s->priv_data;
672  AVStream *st = s->streams[0];
673  AVCodecParameters *par = st->codecpar;
674 
675  /* compute overlay width and height from the codec context information */
676  sar = st->sample_aspect_ratio.num ? st->sample_aspect_ratio : (AVRational){ 1, 1 };
677  dar = av_mul_q(sar, (AVRational){ par->width, par->height });
678 
679  /* we suppose the screen has a 1/1 sample aspect ratio */
680  /* fit in the window */
681  if (av_cmp_q(dar, (AVRational){ opengl->window_width, opengl->window_height }) > 0) {
682  /* fit in width */
683  opengl->picture_width = opengl->window_width;
684  opengl->picture_height = av_rescale(opengl->picture_width, dar.den, dar.num);
685  } else {
686  /* fit in height */
687  opengl->picture_height = opengl->window_height;
688  opengl->picture_width = av_rescale(opengl->picture_height, dar.num, dar.den);
689  }
690 }
691 
692 static av_cold void opengl_get_texture_size(OpenGLContext *opengl, int in_width, int in_height,
693  int *out_width, int *out_height)
694 {
695  if (opengl->non_pow_2_textures) {
696  *out_width = in_width;
697  *out_height = in_height;
698  } else {
699  int max = FFMIN(FFMAX(in_width, in_height), opengl->max_texture_size);
700  unsigned power_of_2 = 1;
701  while (power_of_2 < max)
702  power_of_2 *= 2;
703  *out_height = power_of_2;
704  *out_width = power_of_2;
705  av_log(opengl, AV_LOG_DEBUG, "Texture size calculated from %dx%d into %dx%d\n",
706  in_width, in_height, *out_width, *out_height);
707  }
708 }
709 
711 {
712  const AVPixFmtDescriptor *desc;
713  int shift;
714  enum AVPixelFormat pix_fmt = opengl->pix_fmt;
715 
716  /* We need order of components, not exact position, some minor HACKs here */
722 
724  if (!(desc->flags & AV_PIX_FMT_FLAG_RGB))
725  return;
726 
727 #define FILL_COMPONENT(i) { \
728  shift = (desc->comp[i].depth - 1) >> 3; \
729  opengl->color_map[(i << 2) + (desc->comp[i].offset >> shift)] = 1.0; \
730  }
731 
732  memset(opengl->color_map, 0, sizeof(opengl->color_map));
733  FILL_COMPONENT(0);
734  FILL_COMPONENT(1);
735  FILL_COMPONENT(2);
736  if (desc->flags & AV_PIX_FMT_FLAG_ALPHA)
737  FILL_COMPONENT(3);
738 
739 #undef FILL_COMPONENT
740 }
741 
742 static av_cold GLuint opengl_load_shader(OpenGLContext *opengl, GLenum type, const char *source)
743 {
744  GLuint shader = opengl->glprocs.glCreateShader(type);
745  GLint result;
746  if (!shader) {
747  av_log(opengl, AV_LOG_ERROR, "glCreateShader() failed\n");
748  return 0;
749  }
750  opengl->glprocs.glShaderSource(shader, 1, &source, NULL);
751  opengl->glprocs.glCompileShader(shader);
752 
753  opengl->glprocs.glGetShaderiv(shader, FF_GL_COMPILE_STATUS, &result);
754  if (!result) {
755  char *log;
756  opengl->glprocs.glGetShaderiv(shader, FF_GL_INFO_LOG_LENGTH, &result);
757  if (result) {
758  if ((log = av_malloc(result))) {
759  opengl->glprocs.glGetShaderInfoLog(shader, result, NULL, log);
760  av_log(opengl, AV_LOG_ERROR, "Compile error: %s\n", log);
761  av_free(log);
762  }
763  }
764  goto fail;
765  }
766  OPENGL_ERROR_CHECK(opengl);
767  return shader;
768  fail:
769  opengl->glprocs.glDeleteShader(shader);
770  return 0;
771 }
772 
774 {
775  GLint result;
776  const char *fragment_shader_code = opengl_get_fragment_shader_code(pix_fmt);
777 
778  if (!fragment_shader_code) {
779  av_log(opengl, AV_LOG_ERROR, "Provided pixel format '%s' is not supported\n",
781  return AVERROR(EINVAL);
782  }
783 
786  if (!opengl->vertex_shader) {
787  av_log(opengl, AV_LOG_ERROR, "Vertex shader loading failed.\n");
788  goto fail;
789  }
791  fragment_shader_code);
792  if (!opengl->fragment_shader) {
793  av_log(opengl, AV_LOG_ERROR, "Fragment shader loading failed.\n");
794  goto fail;
795  }
796 
797  opengl->program = opengl->glprocs.glCreateProgram();
798  if (!opengl->program)
799  goto fail;
800 
801  opengl->glprocs.glAttachShader(opengl->program, opengl->vertex_shader);
802  opengl->glprocs.glAttachShader(opengl->program, opengl->fragment_shader);
803  opengl->glprocs.glLinkProgram(opengl->program);
804 
805  opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_LINK_STATUS, &result);
806  if (!result) {
807  char *log;
808  opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_INFO_LOG_LENGTH, &result);
809  if (result) {
810  log = av_malloc(result);
811  if (!log)
812  goto fail;
813  opengl->glprocs.glGetProgramInfoLog(opengl->program, result, NULL, log);
814  av_log(opengl, AV_LOG_ERROR, "Link error: %s\n", log);
815  av_free(log);
816  }
817  goto fail;
818  }
819 
820  opengl->position_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_position");
821  opengl->texture_coords_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_textureCoords");
822  opengl->projection_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_projectionMatrix");
823  opengl->model_view_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_modelViewMatrix");
824  opengl->color_map_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_colorMap");
825  opengl->texture_location[0] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture0");
826  opengl->texture_location[1] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture1");
827  opengl->texture_location[2] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture2");
828  opengl->texture_location[3] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture3");
829  opengl->chroma_div_w_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_div_w");
830  opengl->chroma_div_h_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_div_h");
831 
832  OPENGL_ERROR_CHECK(opengl);
833  return 0;
834  fail:
835  opengl->glprocs.glDeleteShader(opengl->vertex_shader);
836  opengl->glprocs.glDeleteShader(opengl->fragment_shader);
837  opengl->glprocs.glDeleteProgram(opengl->program);
838  opengl->fragment_shader = opengl->vertex_shader = opengl->program = 0;
839  return AVERROR_EXTERNAL;
840 }
841 
842 static av_cold int opengl_configure_texture(OpenGLContext *opengl, GLuint texture,
843  GLsizei width, GLsizei height)
844 {
845  if (texture) {
846  int new_width, new_height;
847  opengl_get_texture_size(opengl, width, height, &new_width, &new_height);
848  glBindTexture(GL_TEXTURE_2D, texture);
849  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
850  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
851  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
852  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
853  glTexImage2D(GL_TEXTURE_2D, 0, opengl->format, new_width, new_height, 0,
854  opengl->format, opengl->type, NULL);
856  }
857  return 0;
858  fail:
859  return AVERROR_EXTERNAL;
860 }
861 
863 {
864  OpenGLContext *opengl = s->priv_data;
865  int tex_w, tex_h;
866 
867  if (opengl->window_width > opengl->max_viewport_width || opengl->window_height > opengl->max_viewport_height) {
868  opengl->window_width = FFMIN(opengl->window_width, opengl->max_viewport_width);
869  opengl->window_height = FFMIN(opengl->window_height, opengl->max_viewport_height);
870  av_log(opengl, AV_LOG_WARNING, "Too big viewport requested, limited to %dx%d", opengl->window_width, opengl->window_height);
871  }
872  glViewport(0, 0, opengl->window_width, opengl->window_height);
874  - (float)opengl->window_width / 2.0f, (float)opengl->window_width / 2.0f,
875  - (float)opengl->window_height / 2.0f, (float)opengl->window_height / 2.0f,
876  1.0f, -1.0f);
878 
880 
881  opengl->vertex[0].z = opengl->vertex[1].z = opengl->vertex[2].z = opengl->vertex[3].z = 0.0f;
882  opengl->vertex[0].x = opengl->vertex[1].x = - (float)opengl->picture_width / 2.0f;
883  opengl->vertex[2].x = opengl->vertex[3].x = (float)opengl->picture_width / 2.0f;
884  opengl->vertex[1].y = opengl->vertex[2].y = - (float)opengl->picture_height / 2.0f;
885  opengl->vertex[0].y = opengl->vertex[3].y = (float)opengl->picture_height / 2.0f;
886 
887  opengl_get_texture_size(opengl, opengl->width, opengl->height, &tex_w, &tex_h);
888 
889  opengl->vertex[0].s0 = 0.0f;
890  opengl->vertex[0].t0 = 0.0f;
891  opengl->vertex[1].s0 = 0.0f;
892  opengl->vertex[1].t0 = (float)opengl->height / (float)tex_h;
893  opengl->vertex[2].s0 = (float)opengl->width / (float)tex_w;
894  opengl->vertex[2].t0 = (float)opengl->height / (float)tex_h;
895  opengl->vertex[3].s0 = (float)opengl->width / (float)tex_w;
896  opengl->vertex[3].t0 = 0.0f;
897 
899  opengl->glprocs.glBufferData(FF_GL_ARRAY_BUFFER, sizeof(opengl->vertex), opengl->vertex, FF_GL_STATIC_DRAW);
901  OPENGL_ERROR_CHECK(opengl);
902  return 0;
903  fail:
904  return AVERROR_EXTERNAL;
905 }
906 
907 static int opengl_prepare(OpenGLContext *opengl)
908 {
909  int i;
910  opengl->glprocs.glUseProgram(opengl->program);
911  opengl->glprocs.glUniformMatrix4fv(opengl->projection_matrix_location, 1, GL_FALSE, opengl->projection_matrix);
912  opengl->glprocs.glUniformMatrix4fv(opengl->model_view_matrix_location, 1, GL_FALSE, opengl->model_view_matrix);
913  for (i = 0; i < 4; i++)
914  if (opengl->texture_location[i] != -1) {
915  opengl->glprocs.glActiveTexture(GL_TEXTURE0 + i);
916  glBindTexture(GL_TEXTURE_2D, opengl->texture_name[i]);
917  opengl->glprocs.glUniform1i(opengl->texture_location[i], i);
918  }
919  if (opengl->color_map_location != -1)
920  opengl->glprocs.glUniformMatrix4fv(opengl->color_map_location, 1, GL_FALSE, opengl->color_map);
921  if (opengl->chroma_div_h_location != -1)
922  opengl->glprocs.glUniform1f(opengl->chroma_div_h_location, opengl->chroma_div_h);
923  if (opengl->chroma_div_w_location != -1)
924  opengl->glprocs.glUniform1f(opengl->chroma_div_w_location, opengl->chroma_div_w);
925 
926  OPENGL_ERROR_CHECK(opengl);
927  return 0;
928  fail:
929  return AVERROR_EXTERNAL;
930 }
931 
933 {
934  OpenGLContext *opengl = h->priv_data;
935  int ret;
936 
937  if (!opengl->no_window) {
938 #if CONFIG_SDL2
939  if ((ret = opengl_sdl_create_window(h)) < 0) {
940  av_log(opengl, AV_LOG_ERROR, "Cannot create default SDL window.\n");
941  return ret;
942  }
943 #else
944  av_log(opengl, AV_LOG_ERROR, "FFmpeg is compiled without SDL. Cannot create default window.\n");
945  return AVERROR(ENOSYS);
946 #endif
947  } else {
949  message.x = message.y = 0;
950  message.width = opengl->window_width;
951  message.height = opengl->window_height;
953  &message , sizeof(message))) < 0) {
954  av_log(opengl, AV_LOG_ERROR, "Application failed to create window buffer.\n");
955  return ret;
956  }
958  av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
959  return ret;
960  }
961  }
962  return 0;
963 }
964 
966 {
967  int ret;
968  OpenGLContext *opengl = h->priv_data;
969  if (!opengl->no_window) {
970 #if CONFIG_SDL2
971  SDL_GL_DeleteContext(opengl->glcontext);
972  SDL_DestroyWindow(opengl->window);
973  SDL_Quit();
974 #endif
976  av_log(opengl, AV_LOG_ERROR, "Application failed to release window buffer.\n");
977  return ret;
978  }
979  return 0;
980 }
981 
983 {
984  OpenGLContext *opengl = h->priv_data;
985 
986  if (opengl->no_window &&
988  av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
989 
990  opengl_deinit_context(opengl);
992 
993  return 0;
994 }
995 
997 {
998  int i, ret;
999  const AVPixFmtDescriptor *desc;
1000 
1001  if ((ret = opengl_compile_shaders(opengl, opengl->pix_fmt)) < 0)
1002  goto fail;
1003 
1004  desc = av_pix_fmt_desc_get(opengl->pix_fmt);
1005  av_assert0(desc->nb_components > 0 && desc->nb_components <= 4);
1006  glGenTextures(desc->nb_components, opengl->texture_name);
1007 
1008  opengl->glprocs.glGenBuffers(2, &opengl->index_buffer);
1009  if (!opengl->index_buffer || !opengl->vertex_buffer) {
1010  av_log(opengl, AV_LOG_ERROR, "Buffer generation failed.\n");
1011  ret = AVERROR_EXTERNAL;
1012  goto fail;
1013  }
1014 
1015  opengl_configure_texture(opengl, opengl->texture_name[0], opengl->width, opengl->height);
1016  if (desc->nb_components > 1) {
1017  int has_alpha = desc->flags & AV_PIX_FMT_FLAG_ALPHA;
1018  int num_planes = desc->nb_components - (has_alpha ? 1 : 0);
1019  if (opengl->non_pow_2_textures) {
1020  opengl->chroma_div_w = 1.0f;
1021  opengl->chroma_div_h = 1.0f;
1022  } else {
1023  opengl->chroma_div_w = 1 << desc->log2_chroma_w;
1024  opengl->chroma_div_h = 1 << desc->log2_chroma_h;
1025  }
1026  for (i = 1; i < num_planes; i++)
1027  if (opengl->non_pow_2_textures)
1028  opengl_configure_texture(opengl, opengl->texture_name[i],
1029  AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w),
1030  AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h));
1031  else
1032  opengl_configure_texture(opengl, opengl->texture_name[i], opengl->width, opengl->height);
1033  if (has_alpha)
1034  opengl_configure_texture(opengl, opengl->texture_name[3], opengl->width, opengl->height);
1035  }
1036 
1040 
1041  glEnable(GL_BLEND);
1042  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1043 
1044  glClearColor((float)opengl->background[0] / 255.0f, (float)opengl->background[1] / 255.0f,
1045  (float)opengl->background[2] / 255.0f, 1.0f);
1046 
1047  ret = AVERROR_EXTERNAL;
1048  OPENGL_ERROR_CHECK(opengl);
1049 
1050  return 0;
1051  fail:
1052  return ret;
1053 }
1054 
1056 {
1057  OpenGLContext *opengl = h->priv_data;
1058  AVCodecParameters *par = h->streams[0]->codecpar;
1059  AVStream *st;
1060  int ret;
1061 
1062  if (h->nb_streams != 1 ||
1063  par->codec_type != AVMEDIA_TYPE_VIDEO ||
1065  av_log(opengl, AV_LOG_ERROR, "Only a single raw or wrapped avframe video stream is supported.\n");
1066  return AVERROR(EINVAL);
1067  }
1068  st = h->streams[0];
1069  opengl->width = st->codecpar->width;
1070  opengl->height = st->codecpar->height;
1071  opengl->pix_fmt = st->codecpar->format;
1072  if (!opengl->window_width)
1073  opengl->window_width = opengl->width;
1074  if (!opengl->window_height)
1075  opengl->window_height = opengl->height;
1076 
1077  if (!opengl->window_title && !opengl->no_window)
1078  opengl->window_title = av_strdup(h->url);
1079 
1080  if ((ret = opengl_create_window(h)))
1081  goto fail;
1082 
1083  if ((ret = opengl_read_limits(h)) < 0)
1084  goto fail;
1085 
1086  if (opengl->width > opengl->max_texture_size || opengl->height > opengl->max_texture_size) {
1087  av_log(opengl, AV_LOG_ERROR, "Too big picture %dx%d, max supported size is %dx%d\n",
1088  opengl->width, opengl->height, opengl->max_texture_size, opengl->max_texture_size);
1089  ret = AVERROR(EINVAL);
1090  goto fail;
1091  }
1092 
1093  if ((ret = opengl_load_procedures(opengl)) < 0)
1094  goto fail;
1095 
1096  opengl_fill_color_map(opengl);
1097  opengl_get_texture_params(opengl);
1098 
1099  if ((ret = opengl_init_context(opengl)) < 0)
1100  goto fail;
1101 
1102  if ((ret = opengl_prepare_vertex(h)) < 0)
1103  goto fail;
1104 
1105  glClear(GL_COLOR_BUFFER_BIT);
1106 
1107 #if CONFIG_SDL2
1108  if (!opengl->no_window)
1109  SDL_GL_SwapWindow(opengl->window);
1110 #endif
1111  if (opengl->no_window &&
1113  av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n");
1114  goto fail;
1115  }
1116 
1117  ret = AVERROR_EXTERNAL;
1118  OPENGL_ERROR_CHECK(opengl);
1119 
1120  opengl->inited = 1;
1121  return 0;
1122 
1123  fail:
1125  return ret;
1126 }
1127 
1128 static uint8_t* opengl_get_plane_pointer(OpenGLContext *opengl, AVPacket *pkt, int comp_index,
1129  const AVPixFmtDescriptor *desc)
1130 {
1131  uint8_t *data = pkt->data;
1132  int wordsize = opengl_type_size(opengl->type);
1133  int width_chroma = AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w);
1134  int height_chroma = AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h);
1135  int plane = desc->comp[comp_index].plane;
1136 
1137  switch(plane) {
1138  case 0:
1139  break;
1140  case 1:
1141  data += opengl->width * opengl->height * wordsize;
1142  break;
1143  case 2:
1144  data += opengl->width * opengl->height * wordsize;
1145  data += width_chroma * height_chroma * wordsize;
1146  break;
1147  case 3:
1148  data += opengl->width * opengl->height * wordsize;
1149  data += 2 * width_chroma * height_chroma * wordsize;
1150  break;
1151  default:
1152  return NULL;
1153  }
1154  return data;
1155 }
1156 
1157 #define LOAD_TEXTURE_DATA(comp_index, sub) \
1158 { \
1159  int width = sub ? AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w) : opengl->width; \
1160  int height = sub ? AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h): opengl->height; \
1161  uint8_t *data; \
1162  int plane = desc->comp[comp_index].plane; \
1163  \
1164  glBindTexture(GL_TEXTURE_2D, opengl->texture_name[comp_index]); \
1165  if (!is_pkt) { \
1166  GLint length = ((AVFrame *)input)->linesize[plane]; \
1167  int bytes_per_pixel = opengl_type_size(opengl->type); \
1168  if (!(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) \
1169  bytes_per_pixel *= desc->nb_components; \
1170  data = ((AVFrame *)input)->data[plane]; \
1171  if (!(length % bytes_per_pixel) && \
1172  (opengl->unpack_subimage || ((length / bytes_per_pixel) == width))) { \
1173  length /= bytes_per_pixel; \
1174  if (length != width) \
1175  glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, length); \
1176  glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, \
1177  opengl->format, opengl->type, data); \
1178  if (length != width) \
1179  glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, 0); \
1180  } else { \
1181  int h; \
1182  for (h = 0; h < height; h++) { \
1183  glTexSubImage2D(GL_TEXTURE_2D, 0, 0, h, width, 1, \
1184  opengl->format, opengl->type, data); \
1185  data += length; \
1186  } \
1187  } \
1188  } else { \
1189  data = opengl_get_plane_pointer(opengl, input, comp_index, desc); \
1190  glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, \
1191  opengl->format, opengl->type, data); \
1192  } \
1193 }
1194 
1195 static int opengl_draw(AVFormatContext *h, void *input, int repaint, int is_pkt)
1196 {
1197  OpenGLContext *opengl = h->priv_data;
1198  enum AVPixelFormat pix_fmt = h->streams[0]->codecpar->format;
1200  int ret;
1201 
1202 #if CONFIG_SDL2
1203  if (!opengl->no_window && (ret = opengl_sdl_process_events(h)) < 0)
1204  goto fail;
1205 #endif
1206  if (opengl->no_window &&
1208  av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");
1209  goto fail;
1210  }
1211 
1212  glClear(GL_COLOR_BUFFER_BIT);
1213 
1214  if (!repaint) {
1215  if (is_pkt)
1216  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
1217  LOAD_TEXTURE_DATA(0, 0)
1218  if (desc->flags & AV_PIX_FMT_FLAG_PLANAR) {
1219  LOAD_TEXTURE_DATA(1, 1)
1220  LOAD_TEXTURE_DATA(2, 1)
1221  if (desc->flags & AV_PIX_FMT_FLAG_ALPHA)
1222  LOAD_TEXTURE_DATA(3, 0)
1223  }
1224  }
1225  ret = AVERROR_EXTERNAL;
1226  OPENGL_ERROR_CHECK(opengl);
1227 
1228  if ((ret = opengl_prepare(opengl)) < 0)
1229  goto fail;
1230 
1233  opengl->glprocs.glVertexAttribPointer(opengl->position_attrib, 3, GL_FLOAT, GL_FALSE, sizeof(OpenGLVertexInfo), 0);
1235  opengl->glprocs.glVertexAttribPointer(opengl->texture_coords_attrib, 2, GL_FLOAT, GL_FALSE, sizeof(OpenGLVertexInfo), 12);
1237 
1238  glDrawElements(GL_TRIANGLES, FF_ARRAY_ELEMS(g_index), GL_UNSIGNED_SHORT, 0);
1239 
1240  ret = AVERROR_EXTERNAL;
1241  OPENGL_ERROR_CHECK(opengl);
1242 
1243 #if CONFIG_SDL2
1244  if (!opengl->no_window)
1245  SDL_GL_SwapWindow(opengl->window);
1246 #endif
1247  if (opengl->no_window &&
1249  av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n");
1250  goto fail;
1251  }
1252 
1253  return 0;
1254  fail:
1255  return ret;
1256 }
1257 
1259 {
1260  AVCodecParameters *par = h->streams[0]->codecpar;
1261  if (par->codec_id == AV_CODEC_ID_WRAPPED_AVFRAME) {
1262  AVFrame *frame = (AVFrame *)pkt->data;
1263  return opengl_draw(h, frame, 0, 0);
1264  } else {
1265  return opengl_draw(h, pkt, 0, 1);
1266  }
1267 }
1268 
1269 static int opengl_write_frame(AVFormatContext *h, int stream_index,
1270  AVFrame **frame, unsigned flags)
1271 {
1273  return 0;
1274  return opengl_draw(h, *frame, 0, 0);
1275 }
1276 
1277 #define OFFSET(x) offsetof(OpenGLContext, x)
1278 #define ENC AV_OPT_FLAG_ENCODING_PARAM
1279 static const AVOption options[] = {
1280  { "background", "set background color", OFFSET(background), AV_OPT_TYPE_COLOR, {.str = "black"}, 0, 0, ENC },
1281  { "no_window", "disable default window", OFFSET(no_window), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, ENC },
1282  { "window_title", "set window title", OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, ENC },
1283  { "window_size", "set window size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, ENC },
1284  { NULL }
1285 };
1286 
1287 static const AVClass opengl_class = {
1288  .class_name = "opengl outdev",
1289  .item_name = av_default_item_name,
1290  .option = options,
1291  .version = LIBAVUTIL_VERSION_INT,
1293 };
1294 
1296  .name = "opengl",
1297  .long_name = NULL_IF_CONFIG_SMALL("OpenGL output"),
1298  .priv_data_size = sizeof(OpenGLContext),
1299  .audio_codec = AV_CODEC_ID_NONE,
1300  .video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
1303  .write_uncoded_frame = opengl_write_frame,
1305  .control_message = opengl_control_message,
1307  .priv_class = &opengl_class,
1308 };
static const char *const format[]
Definition: af_aiir.c:456
#define av_cold
Definition: attributes.h:88
uint8_t
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Main libavdevice API header.
Main libavformat public API header.
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:465
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
#define AVFMT_NOTIMESTAMPS
Format does not need / have any timestamps.
Definition: avformat.h:462
#define flags(name, subs,...)
Definition: cbs_av1.c:561
static int FUNC() message(CodedBitstreamContext *ctx, RWContext *rw, SEIRawMessage *current)
#define s(width, name)
Definition: cbs_vp9.c:257
#define fail()
Definition: checkasm.h:133
common internal and external API header
#define FFMIN(a, b)
Definition: common.h:105
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define FFMAX(a, b)
Definition: common.h:103
#define NULL
Definition: coverity.c:32
#define max(a, b)
Definition: cuda_runtime.h:33
static enum AVPixelFormat pix_fmt
static AVFrame * frame
double value
Definition: eval.c:98
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:729
static const char * window_title
Definition: ffplay.c:313
static SDL_Window * window
Definition: ffplay.c:366
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
const char * usage
Definition: floatimg_cmp.c:60
@ AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
Definition: opt.h:235
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
@ AV_OPT_TYPE_COLOR
Definition: opt.h:240
@ AV_CODEC_ID_RAWVIDEO
Definition: codec_id.h:62
@ AV_CODEC_ID_WRAPPED_AVFRAME
Passthrough codec, AVFrames wrapped in AVPacket.
Definition: codec_id.h:574
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToAppMessageType type, void *data, size_t data_size)
Send control message from device to application.
Definition: avdevice.c:61
@ AV_APP_TO_DEV_WINDOW_REPAINT
Repaint request message.
Definition: avdevice.h:144
@ AV_APP_TO_DEV_WINDOW_SIZE
Window size change message.
Definition: avdevice.h:134
@ AV_DEV_TO_APP_CREATE_WINDOW_BUFFER
Create window buffer message.
Definition: avdevice.h:218
@ AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER
Display window buffer message.
Definition: avdevice.h:240
@ AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER
Prepare window buffer message.
Definition: avdevice.h:229
@ AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER
Destroy window buffer message.
Definition: avdevice.h:251
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int index
Definition: gxfenc.c:89
cl_device_type type
int i
Definition: input.c:407
#define transpose(x)
@ AV_WRITE_UNCODED_FRAME_QUERY
Query whether the feature is possible on this stream.
Definition: internal.h:780
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
version
Definition: libkvazaar.c:320
const char * desc
Definition: libsvtav1.c:79
@ AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT
Definition: log.h:41
int stride
Definition: mace.c:144
const char data[16]
Definition: mxf.c:142
static av_cold int opengl_configure_texture(OpenGLContext *opengl, GLuint texture, GLsizei width, GLsizei height)
Definition: opengl_enc.c:842
static av_cold void opengl_deinit_context(OpenGLContext *opengl)
Definition: opengl_enc.c:283
GLint(APIENTRY * FF_PFNGLGETATTRIBLOCATIONPROC)(GLuint program, const char *name)
Definition: opengl_enc.c:102
void(APIENTRY * FF_PFNGLGENBUFFERSPROC)(GLsizei n, GLuint *buffers)
Definition: opengl_enc.c:98
GLint(APIENTRY * FF_PFNGLGETUNIFORMLOCATIONPROC)(GLuint program, const char *name)
Definition: opengl_enc.c:105
static int opengl_write_packet(AVFormatContext *h, AVPacket *pkt)
Definition: opengl_enc.c:1258
static int opengl_release_window(AVFormatContext *h)
Definition: opengl_enc.c:965
#define LOAD_OPENGL_FUN(name, type)
static av_cold int opengl_write_trailer(AVFormatContext *h)
Definition: opengl_enc.c:982
#define FF_GL_FRAGMENT_SHADER
Definition: opengl_enc.c:92
void(APIENTRY * FF_PFNGLDELETESHADERPROC)(GLuint shader)
Definition: opengl_enc.c:117
void(APIENTRY * FF_PFNGLBINDBUFFERPROC)(GLenum target, GLuint buffer)
Definition: opengl_enc.c:101
void(APIENTRY * FF_PFNGLSHADERSOURCEPROC)(GLuint shader, GLsizei count, const char **string, const GLint *length)
Definition: opengl_enc.c:119
#define FF_GL_LINK_STATUS
Definition: opengl_enc.c:95
static int opengl_prepare(OpenGLContext *opengl)
Definition: opengl_enc.c:907
static av_cold int opengl_compile_shaders(OpenGLContext *opengl, enum AVPixelFormat pix_fmt)
Definition: opengl_enc.c:773
static int opengl_write_frame(AVFormatContext *h, int stream_index, AVFrame **frame, unsigned flags)
Definition: opengl_enc.c:1269
void(APIENTRY * FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
Definition: opengl_enc.c:97
#define OPENGL_ERROR_CHECK(ctx)
Definition: opengl_enc.c:151
static uint8_t * opengl_get_plane_pointer(OpenGLContext *opengl, AVPacket *pkt, int comp_index, const AVPixFmtDescriptor *desc)
Definition: opengl_enc.c:1128
void(APIENTRY * FF_PFNGLDELETEPROGRAMPROC)(GLuint program)
Definition: opengl_enc.c:110
static const AVOption options[]
Definition: opengl_enc.c:1279
void(APIENTRY * FF_PFNGLCOMPILESHADERPROC)(GLuint shader)
Definition: opengl_enc.c:118
#define APIENTRY
Definition: opengl_enc.c:64
static const GLushort g_index[6]
Definition: opengl_enc.c:167
#define FILL_COMPONENT(i)
void(APIENTRY * FF_PFNGLLINKPROGRAMPROC)(GLuint program)
Definition: opengl_enc.c:112
void(APIENTRY * FF_PFNGLVERTEXATTRIBPOINTERPROC)(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, uintptr_t pointer)
Definition: opengl_enc.c:104
static av_cold int opengl_prepare_vertex(AVFormatContext *s)
Definition: opengl_enc.c:862
static int av_cold opengl_load_procedures(OpenGLContext *opengl)
Definition: opengl_enc.c:490
void(APIENTRY * FF_PFNGLBUFFERDATAPROC)(GLenum target, ptrdiff_t size, const GLvoid *data, GLenum usage)
Definition: opengl_enc.c:100
static void opengl_compute_display_area(AVFormatContext *s)
Definition: opengl_enc.c:668
#define FF_GL_UNSIGNED_BYTE_2_3_3_REV
Definition: opengl_enc.c:84
AVOutputFormat ff_opengl_muxer
Definition: opengl_enc.c:1295
#define FF_GL_COMPILE_STATUS
Definition: opengl_enc.c:94
void(APIENTRY * FF_PFNGLGETSHADERIVPROC)(GLuint shader, GLenum pname, GLint *params)
Definition: opengl_enc.c:120
static av_cold GLuint opengl_load_shader(OpenGLContext *opengl, GLenum type, const char *source)
Definition: opengl_enc.c:742
void(APIENTRY * FF_PFNGLUSEPROGRAMPROC)(GLuint program)
Definition: opengl_enc.c:111
void(APIENTRY * FF_PFNGLENABLEVERTEXATTRIBARRAYPROC)(GLuint index)
Definition: opengl_enc.c:103
static int opengl_draw(AVFormatContext *h, void *intput, int repaint, int is_pkt)
Definition: opengl_enc.c:1195
#define FF_GL_ELEMENT_ARRAY_BUFFER
Definition: opengl_enc.c:90
static void opengl_make_identity(float matrix[16])
Definition: opengl_enc.c:545
#define FF_GL_UNSIGNED_BYTE_3_3_2
Definition: opengl_enc.c:83
void(APIENTRY * FF_PFNGLATTACHSHADERPROC)(GLuint program, GLuint shader)
Definition: opengl_enc.c:115
static int opengl_create_window(AVFormatContext *h)
Definition: opengl_enc.c:932
static av_cold void opengl_get_texture_size(OpenGLContext *opengl, int in_width, int in_height, int *out_width, int *out_height)
Definition: opengl_enc.c:692
#define FF_GL_UNSIGNED_SHORT_1_5_5_5_REV
Definition: opengl_enc.c:85
#define LOAD_TEXTURE_DATA(comp_index, sub)
Definition: opengl_enc.c:1157
static const char * opengl_get_fragment_shader_code(enum AVPixelFormat format)
Definition: opengl_enc.c:630
static void opengl_make_ortho(float matrix[16], float left, float right, float bottom, float top, float nearZ, float farZ)
Definition: opengl_enc.c:551
static int opengl_control_message(AVFormatContext *h, int type, void *data, size_t data_size)
Definition: opengl_enc.c:329
#define ENC
Definition: opengl_enc.c:1278
static int opengl_resize(AVFormatContext *h, int width, int height)
Definition: opengl_enc.c:309
void(APIENTRY * FF_PFNGLGETPROGRAMINFOLOGPROC)(GLuint program, GLsizei bufSize, GLsizei *length, char *infoLog)
Definition: opengl_enc.c:114
static const struct OpenGLFormatDesc opengl_format_desc[]
void(APIENTRY * FF_PFNGLUNIFORMMATRIX4FVPROC)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
Definition: opengl_enc.c:108
GLuint(APIENTRY * FF_PFNGLCREATEPROGRAMPROC)(void)
Definition: opengl_enc.c:109
static av_cold int opengl_read_limits(AVFormatContext *h)
Definition: opengl_enc.c:571
#define FF_GL_ARRAY_BUFFER
Definition: opengl_enc.c:89
static av_cold int opengl_write_header(AVFormatContext *h)
Definition: opengl_enc.c:1055
static av_cold int opengl_init_context(OpenGLContext *opengl)
Definition: opengl_enc.c:996
#define FF_GL_STATIC_DRAW
Definition: opengl_enc.c:91
static int opengl_type_size(GLenum type)
Definition: opengl_enc.c:640
void(APIENTRY * FF_PFNGLGETSHADERINFOLOGPROC)(GLuint shader, GLsizei bufSize, GLsizei *length, char *infoLog)
Definition: opengl_enc.c:121
#define OFFSET(x)
Definition: opengl_enc.c:1277
#define FF_GL_INFO_LOG_LENGTH
Definition: opengl_enc.c:96
void(APIENTRY * FF_PFNGLDELETEBUFFERSPROC)(GLsizei n, const GLuint *buffers)
Definition: opengl_enc.c:99
static av_cold void opengl_fill_color_map(OpenGLContext *opengl)
Definition: opengl_enc.c:710
static const AVClass opengl_class
Definition: opengl_enc.c:1287
void(APIENTRY * FF_PFNGLUNIFORM1FPROC)(GLint location, GLfloat v0)
Definition: opengl_enc.c:106
GLuint(APIENTRY * FF_PFNGLCREATESHADERPROC)(GLenum type)
Definition: opengl_enc.c:116
#define FF_GL_RED_COMPONENT
Definition: opengl_enc.c:79
void(APIENTRY * FF_PFNGLGETPROGRAMIVPROC)(GLuint program, GLenum pname, GLint *params)
Definition: opengl_enc.c:113
static av_cold void opengl_get_texture_params(OpenGLContext *opengl)
Definition: opengl_enc.c:656
#define FF_GL_VERTEX_SHADER
Definition: opengl_enc.c:93
void(APIENTRY * FF_PFNGLUNIFORM1IPROC)(GLint location, GLint v0)
Definition: opengl_enc.c:107
static const char *const FF_OPENGL_FRAGMENT_SHADER_RGB_PACKET
Fragment shader for packet RGB formats.
static const char *const FF_OPENGL_FRAGMENT_SHADER_GRAY
static const char *const FF_OPENGL_FRAGMENT_SHADER_RGBA_PLANAR
Fragment shader for planar RGBA formats.
static const char *const FF_OPENGL_VERTEX_SHADER
static const char *const FF_OPENGL_FRAGMENT_SHADER_RGB_PLANAR
Fragment shader for planar RGB formats.
static const char *const FF_OPENGL_FRAGMENT_SHADER_YUVA_PLANAR
Fragment shader for planar YUVA formats.
static const char *const FF_OPENGL_FRAGMENT_SHADER_YUV_PLANAR
Fragment shader for planar YUV formats.
static const char *const FF_OPENGL_FRAGMENT_SHADER_RGBA_PACKET
Fragment shader for packet RGBA formats.
AVOptions.
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2489
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:179
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:148
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:144
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
#define AV_PIX_FMT_BGR555
Definition: pixfmt.h:392
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:390
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:389
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:385
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:240
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
@ AV_PIX_FMT_RGB8
packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
Definition: pixfmt.h:86
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:239
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
@ AV_PIX_FMT_BGR8
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:83
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:238
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:237
#define AV_PIX_FMT_BGR565
Definition: pixfmt.h:391
#define AV_PIX_FMT_RGB565
Definition: pixfmt.h:386
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:394
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
#define AV_PIX_FMT_RGB555
Definition: pixfmt.h:387
const char * name
Definition: qsvenc.c:46
#define v0
Definition: regdef.h:26
typedef void(RENAME(mix_any_func_type))
static char buffer[20]
Definition: seek.c:32
#define FF_ARRAY_ELEMS(a)
static int shift(int a, int b)
Definition: sonic.c:82
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int width
Video only.
Definition: codec_par.h:126
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
Format I/O context.
Definition: avformat.h:1232
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
AVOption.
Definition: opt.h:248
const char * name
Definition: avformat.h:491
This structure stores compressed data.
Definition: packet.h:346
uint8_t * data
Definition: packet.h:369
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:935
FF_PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer
Definition: opengl_enc.c:131
FF_PFNGLGETPROGRAMIVPROC glGetProgramiv
Definition: opengl_enc.c:140
FF_PFNGLDELETEPROGRAMPROC glDeleteProgram
Definition: opengl_enc.c:137
FF_PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation
Definition: opengl_enc.c:129
FF_PFNGLUSEPROGRAMPROC glUseProgram
Definition: opengl_enc.c:138
FF_PFNGLGENBUFFERSPROC glGenBuffers
Definition: opengl_enc.c:125
FF_PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray
Definition: opengl_enc.c:130
FF_PFNGLCOMPILESHADERPROC glCompileShader
Definition: opengl_enc.c:145
FF_PFNGLATTACHSHADERPROC glAttachShader
Definition: opengl_enc.c:142
FF_PFNGLACTIVETEXTUREPROC glActiveTexture
Definition: opengl_enc.c:124
FF_PFNGLBUFFERDATAPROC glBufferData
Definition: opengl_enc.c:127
FF_PFNGLDELETEBUFFERSPROC glDeleteBuffers
Definition: opengl_enc.c:126
FF_PFNGLGETSHADERIVPROC glGetShaderiv
Definition: opengl_enc.c:147
FF_PFNGLCREATESHADERPROC glCreateShader
Definition: opengl_enc.c:143
FF_PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog
Definition: opengl_enc.c:141
FF_PFNGLLINKPROGRAMPROC glLinkProgram
Definition: opengl_enc.c:139
FF_PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv
Definition: opengl_enc.c:135
FF_PFNGLSHADERSOURCEPROC glShaderSource
Definition: opengl_enc.c:146
FF_PFNGLUNIFORM1IPROC glUniform1i
Definition: opengl_enc.c:134
FF_PFNGLCREATEPROGRAMPROC glCreateProgram
Definition: opengl_enc.c:136
FF_PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog
Definition: opengl_enc.c:148
FF_PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation
Definition: opengl_enc.c:132
FF_PFNGLDELETESHADERPROC glDeleteShader
Definition: opengl_enc.c:144
FF_PFNGLBINDBUFFERPROC glBindBuffer
Definition: opengl_enc.c:128
FF_PFNGLUNIFORM1FPROC glUniform1f
Definition: opengl_enc.c:133
GLint projection_matrix_location
Uniforms' locations.
Definition: opengl_enc.c:202
GLfloat chroma_div_h
Chroma subsampling h ratio.
Definition: opengl_enc.c:215
int height
Stream height.
Definition: opengl_enc.c:221
GLuint index_buffer
Index buffer.
Definition: opengl_enc.c:199
GLint texture_location[4]
Definition: opengl_enc.c:207
GLint position_attrib
Attibutes' locations.
Definition: opengl_enc.c:208
GLint color_map_location
Definition: opengl_enc.c:204
GLint max_viewport_height
Maximum viewport size.
Definition: opengl_enc.c:190
GLuint fragment_shader
Fragment shader for current pix_pmt.
Definition: opengl_enc.c:197
int inited
Set to 1 when write_header was successfully called.
Definition: opengl_enc.c:182
GLuint texture_name[4]
Textures' IDs.
Definition: opengl_enc.c:198
GLfloat model_view_matrix[16]
Modev view matrix.
Definition: opengl_enc.c:212
GLuint vertex_shader
Vertex shader.
Definition: opengl_enc.c:196
uint8_t background[4]
Background color.
Definition: opengl_enc.c:183
GLint chroma_div_h_location
Definition: opengl_enc.c:206
GLenum format
Definition: opengl_enc.c:218
GLfloat projection_matrix[16]
Projection matrix.
Definition: opengl_enc.c:211
int picture_width
Rendered width.
Definition: opengl_enc.c:223
GLint texture_coords_attrib
Definition: opengl_enc.c:209
int no_window
0 for create default window
Definition: opengl_enc.c:184
GLfloat color_map[16]
RGBA color map matrix.
Definition: opengl_enc.c:213
FFOpenGLFunctions glprocs
Definition: opengl_enc.c:180
GLuint vertex_buffer
Vertex buffer.
Definition: opengl_enc.c:200
int non_pow_2_textures
1 when non power of 2 textures are supported
Definition: opengl_enc.c:191
GLint max_viewport_width
Maximum viewport size.
Definition: opengl_enc.c:189
GLfloat chroma_div_w
Chroma subsampling w ratio.
Definition: opengl_enc.c:214
GLint max_texture_size
Maximum texture size.
Definition: opengl_enc.c:188
char * window_title
Title of the window.
Definition: opengl_enc.c:185
GLuint program
Shader program.
Definition: opengl_enc.c:195
int picture_height
Rendered height.
Definition: opengl_enc.c:224
int width
Stream width.
Definition: opengl_enc.c:220
int unpack_subimage
1 when GL_EXT_unpack_subimage is available
Definition: opengl_enc.c:192
OpenGLVertexInfo vertex[4]
VBO.
Definition: opengl_enc.c:201
enum AVPixelFormat pix_fmt
Stream pixel format.
Definition: opengl_enc.c:222
GLint chroma_div_w_location
Definition: opengl_enc.c:205
GLint model_view_matrix_location
Definition: opengl_enc.c:203
const char *const * fragment_shader
Definition: opengl_enc.c:231
enum AVPixelFormat fixel_format
Definition: opengl_enc.c:230
float t0
Texture coords.
Definition: opengl_enc.c:163
float z
Position.
Definition: opengl_enc.c:162
#define av_free(p)
#define av_malloc(s)
#define av_log(a,...)
AVPacket * pkt
Definition: movenc.c:59
#define height
#define width
int size
static const struct twinvq_data tab
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98