37 #include <OpenGL/gl3.h>
70  * but since OpenGL 3.0 GL_LUMINANCE is deprecated.
88 /* MinGW exposes only OpenGL 1.1 API */
155 …av_log(ctx, AV_LOG_ERROR, "OpenGL error occurred in '%s', line %d: %d\n", __FUNCTION__, __LINE__, …
187     /* OpenGL implementation limits */
194     /* Current OpenGL configuration */
281 static av_cold int opengl_init_context(OpenGLContext *opengl);
283 static av_cold void opengl_deinit_context(OpenGLContext *opengl)  in opengl_deinit_context()  argument
285     glDeleteTextures(4, opengl->texture_name);  in opengl_deinit_context()
286     opengl->texture_name[0] = opengl->texture_name[1] =  in opengl_deinit_context()
287     opengl->texture_name[2] = opengl->texture_name[3] = 0;  in opengl_deinit_context()
288     if (opengl->glprocs.glUseProgram)  in opengl_deinit_context()
289         opengl->glprocs.glUseProgram(0);  in opengl_deinit_context()
290     if (opengl->glprocs.glDeleteProgram) {  in opengl_deinit_context()
291         opengl->glprocs.glDeleteProgram(opengl->program);  in opengl_deinit_context()
292         opengl->program = 0;  in opengl_deinit_context()
294     if (opengl->glprocs.glDeleteShader) {  in opengl_deinit_context()
295         opengl->glprocs.glDeleteShader(opengl->vertex_shader);  in opengl_deinit_context()
296         opengl->glprocs.glDeleteShader(opengl->fragment_shader);  in opengl_deinit_context()
297         opengl->vertex_shader = opengl->fragment_shader = 0;  in opengl_deinit_context()
299     if (opengl->glprocs.glBindBuffer) {  in opengl_deinit_context()
300         opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, 0);  in opengl_deinit_context()
301         opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, 0);  in opengl_deinit_context()
303     if (opengl->glprocs.glDeleteBuffers) {  in opengl_deinit_context()
304         opengl->glprocs.glDeleteBuffers(2, &opengl->index_buffer);  in opengl_deinit_context()
305         opengl->vertex_buffer = opengl->index_buffer = 0;  in opengl_deinit_context()
312     OpenGLContext *opengl = h->priv_data;  in opengl_resize()  local
313     opengl->window_width = width;  in opengl_resize()
314     opengl->window_height = height;  in opengl_resize()
315     if (opengl->inited) {  in opengl_resize()
316         if (opengl->no_window &&  in opengl_resize()
318             av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");  in opengl_resize()
331     OpenGLContext *opengl = h->priv_data;  in opengl_control_message()  local
340         return opengl_resize(h, opengl->window_width, opengl->window_height);  in opengl_control_message()
348     OpenGLContext *opengl = h->priv_data;  in opengl_sdl_process_events()  local
367                 SDL_GL_GetDrawableSize(opengl->window, &message.width, &message.height);  in opengl_sdl_process_events()
379     OpenGLContext *opengl = h->priv_data;  in opengl_sdl_create_window()  local
382         av_log(opengl, AV_LOG_ERROR, "Unable to initialize SDL: %s\n", SDL_GetError());  in opengl_sdl_create_window()
385     opengl->window = SDL_CreateWindow(opengl->window_title,  in opengl_sdl_create_window()
388                                       opengl->window_width, opengl->window_height,  in opengl_sdl_create_window()
390     if (!opengl->window) {  in opengl_sdl_create_window()
391         av_log(opengl, AV_LOG_ERROR, "Unable to create default window: %s\n", SDL_GetError());  in opengl_sdl_create_window()
394     opengl->glcontext = SDL_GL_CreateContext(opengl->window);  in opengl_sdl_create_window()
395     if (!opengl->glcontext) {  in opengl_sdl_create_window()
396 …av_log(opengl, AV_LOG_ERROR, "Unable to create OpenGL context on default window: %s\n", SDL_GetErr…  in opengl_sdl_create_window()
404     av_log(opengl, AV_LOG_INFO, "SDL driver: '%s'.\n", SDL_GetCurrentVideoDriver());  in opengl_sdl_create_window()
405     SDL_GL_GetDrawableSize(opengl->window, &message.width, &message.height);  in opengl_sdl_create_window()
409 static int av_cold opengl_sdl_load_procedures(OpenGLContext *opengl)  in opengl_sdl_load_procedures()  argument
411     FFOpenGLFunctions *procs = &opengl->glprocs;  in opengl_sdl_load_procedures()
416         av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \  in opengl_sdl_load_procedures()
453 static int av_cold opengl_load_procedures(OpenGLContext *opengl)  in opengl_load_procedures()  argument
455     FFOpenGLFunctions *procs = &opengl->glprocs;  in opengl_load_procedures()
458     if (!opengl->no_window)  in opengl_load_procedures()
459         return opengl_sdl_load_procedures(opengl);  in opengl_load_procedures()
490 static int av_cold opengl_load_procedures(OpenGLContext *opengl)  in opengl_load_procedures()  argument
492     FFOpenGLFunctions *procs = &opengl->glprocs;  in opengl_load_procedures()
503         av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \  in opengl_load_procedures()
508     if (!opengl->no_window)  in opengl_load_procedures()
509         return opengl_sdl_load_procedures(opengl);  in opengl_load_procedures()
573     OpenGLContext *opengl = h->priv_data;  in opengl_read_limits()  local
592         av_log(h, AV_LOG_ERROR, "No OpenGL context initialized for the current thread\n");  in opengl_read_limits()
596     av_log(h, AV_LOG_DEBUG, "OpenGL version: %s\n", version);  in opengl_read_limits()
609     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &opengl->max_texture_size);  in opengl_read_limits()
610     glGetIntegerv(GL_MAX_VIEWPORT_DIMS, &opengl->max_viewport_width);  in opengl_read_limits()
611 …  opengl->non_pow_2_textures = major >= 2 || strstr(extensions, "GL_ARB_texture_non_power_of_two");  in opengl_read_limits()
613     opengl->unpack_subimage = !!strstr(extensions, "GL_EXT_unpack_subimage");  in opengl_read_limits()
615     opengl->unpack_subimage = 1;  in opengl_read_limits()
618 …av_log(h, AV_LOG_DEBUG, "Non Power of 2 textures support: %s\n", opengl->non_pow_2_textures ? "Yes…  in opengl_read_limits()
619 …av_log(h, AV_LOG_DEBUG, "Unpack Subimage extension support: %s\n", opengl->unpack_subimage ? "Yes"…  in opengl_read_limits()
620 …av_log(h, AV_LOG_DEBUG, "Max texture size: %dx%d\n", opengl->max_texture_size, opengl->max_texture…  in opengl_read_limits()
622            opengl->max_viewport_width, opengl->max_viewport_height);  in opengl_read_limits()
624     OPENGL_ERROR_CHECK(opengl);  in opengl_read_limits()
656 static av_cold void opengl_get_texture_params(OpenGLContext *opengl)  in opengl_get_texture_params()  argument
660         if (opengl_format_desc[i].fixel_format == opengl->pix_fmt) {  in opengl_get_texture_params()
661             opengl->format = opengl_format_desc[i].format;  in opengl_get_texture_params()
662             opengl->type = opengl_format_desc[i].type;  in opengl_get_texture_params()
671     OpenGLContext *opengl = s->priv_data;  in opengl_compute_display_area()  local
681     if (av_cmp_q(dar, (AVRational){ opengl->window_width, opengl->window_height }) > 0) {  in opengl_compute_display_area()
683         opengl->picture_width = opengl->window_width;  in opengl_compute_display_area()
684         opengl->picture_height = av_rescale(opengl->picture_width, dar.den, dar.num);  in opengl_compute_display_area()
687         opengl->picture_height = opengl->window_height;  in opengl_compute_display_area()
688         opengl->picture_width = av_rescale(opengl->picture_height, dar.num, dar.den);  in opengl_compute_display_area()
692 static av_cold void opengl_get_texture_size(OpenGLContext *opengl, int in_width, int in_height,  in opengl_get_texture_size()  argument
695     if (opengl->non_pow_2_textures) {  in opengl_get_texture_size()
699         int max = FFMIN(FFMAX(in_width, in_height), opengl->max_texture_size);  in opengl_get_texture_size()
705         av_log(opengl, AV_LOG_DEBUG, "Texture size calculated from %dx%d into %dx%d\n",  in opengl_get_texture_size()
710 static av_cold void opengl_fill_color_map(OpenGLContext *opengl)  in opengl_fill_color_map()  argument
714     enum AVPixelFormat pix_fmt = opengl->pix_fmt;  in opengl_fill_color_map()
729         opengl->color_map[(i << 2) + (desc->comp[i].offset >> shift)] = 1.0; \  in opengl_fill_color_map()
732     memset(opengl->color_map, 0, sizeof(opengl->color_map));  in opengl_fill_color_map()
742 static av_cold GLuint opengl_load_shader(OpenGLContext *opengl, GLenum type, const char *source)  in opengl_load_shader()  argument
744     GLuint shader = opengl->glprocs.glCreateShader(type);  in opengl_load_shader()
747         av_log(opengl, AV_LOG_ERROR, "glCreateShader() failed\n");  in opengl_load_shader()
750     opengl->glprocs.glShaderSource(shader, 1, &source, NULL);  in opengl_load_shader()
751     opengl->glprocs.glCompileShader(shader);  in opengl_load_shader()
753     opengl->glprocs.glGetShaderiv(shader, FF_GL_COMPILE_STATUS, &result);  in opengl_load_shader()
756         opengl->glprocs.glGetShaderiv(shader, FF_GL_INFO_LOG_LENGTH, &result);  in opengl_load_shader()
759                 opengl->glprocs.glGetShaderInfoLog(shader, result, NULL, log);  in opengl_load_shader()
760                 av_log(opengl, AV_LOG_ERROR, "Compile error: %s\n", log);  in opengl_load_shader()
766     OPENGL_ERROR_CHECK(opengl);  in opengl_load_shader()
769     opengl->glprocs.glDeleteShader(shader);  in opengl_load_shader()
773 static av_cold int opengl_compile_shaders(OpenGLContext *opengl, enum AVPixelFormat pix_fmt)  in opengl_compile_shaders()  argument
779         av_log(opengl, AV_LOG_ERROR, "Provided pixel format '%s' is not supported\n",  in opengl_compile_shaders()
784     opengl->vertex_shader = opengl_load_shader(opengl, FF_GL_VERTEX_SHADER,  in opengl_compile_shaders()
786     if (!opengl->vertex_shader) {  in opengl_compile_shaders()
787         av_log(opengl, AV_LOG_ERROR, "Vertex shader loading failed.\n");  in opengl_compile_shaders()
790     opengl->fragment_shader = opengl_load_shader(opengl, FF_GL_FRAGMENT_SHADER,  in opengl_compile_shaders()
792     if (!opengl->fragment_shader) {  in opengl_compile_shaders()
793         av_log(opengl, AV_LOG_ERROR, "Fragment shader loading failed.\n");  in opengl_compile_shaders()
797     opengl->program = opengl->glprocs.glCreateProgram();  in opengl_compile_shaders()
798     if (!opengl->program)  in opengl_compile_shaders()
801     opengl->glprocs.glAttachShader(opengl->program, opengl->vertex_shader);  in opengl_compile_shaders()
802     opengl->glprocs.glAttachShader(opengl->program, opengl->fragment_shader);  in opengl_compile_shaders()
803     opengl->glprocs.glLinkProgram(opengl->program);  in opengl_compile_shaders()
805     opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_LINK_STATUS, &result);  in opengl_compile_shaders()
808         opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_INFO_LOG_LENGTH, &result);  in opengl_compile_shaders()
813             opengl->glprocs.glGetProgramInfoLog(opengl->program, result, NULL, log);  in opengl_compile_shaders()
814             av_log(opengl, AV_LOG_ERROR, "Link error: %s\n", log);  in opengl_compile_shaders()
820     opengl->position_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_position");  in opengl_compile_shaders()
821 …opengl->texture_coords_attrib = opengl->glprocs.glGetAttribLocation(opengl->program, "a_textureCoo…  in opengl_compile_shaders()
822 …opengl->projection_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_proj…  in opengl_compile_shaders()
823 …opengl->model_view_matrix_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_mode…  in opengl_compile_shaders()
824 …  opengl->color_map_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_colorMap");  in opengl_compile_shaders()
825 … opengl->texture_location[0] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture0");  in opengl_compile_shaders()
826 … opengl->texture_location[1] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture1");  in opengl_compile_shaders()
827 … opengl->texture_location[2] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture2");  in opengl_compile_shaders()
828 … opengl->texture_location[3] = opengl->glprocs.glGetUniformLocation(opengl->program, "u_texture3");  in opengl_compile_shaders()
829 …opengl->chroma_div_w_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_di…  in opengl_compile_shaders()
830 …opengl->chroma_div_h_location = opengl->glprocs.glGetUniformLocation(opengl->program, "u_chroma_di…  in opengl_compile_shaders()
832     OPENGL_ERROR_CHECK(opengl);  in opengl_compile_shaders()
835     opengl->glprocs.glDeleteShader(opengl->vertex_shader);  in opengl_compile_shaders()
836     opengl->glprocs.glDeleteShader(opengl->fragment_shader);  in opengl_compile_shaders()
837     opengl->glprocs.glDeleteProgram(opengl->program);  in opengl_compile_shaders()
838     opengl->fragment_shader = opengl->vertex_shader = opengl->program = 0;  in opengl_compile_shaders()
842 static av_cold int opengl_configure_texture(OpenGLContext *opengl, GLuint texture,  in opengl_configure_texture()  argument
847         opengl_get_texture_size(opengl, width, height, &new_width, &new_height);  in opengl_configure_texture()
853         glTexImage2D(GL_TEXTURE_2D, 0, opengl->format, new_width, new_height, 0,  in opengl_configure_texture()
854                      opengl->format, opengl->type, NULL);  in opengl_configure_texture()
864     OpenGLContext *opengl = s->priv_data;  in opengl_prepare_vertex()  local
867 …if (opengl->window_width > opengl->max_viewport_width || opengl->window_height > opengl->max_viewp…  in opengl_prepare_vertex()
868         opengl->window_width = FFMIN(opengl->window_width, opengl->max_viewport_width);  in opengl_prepare_vertex()
869         opengl->window_height = FFMIN(opengl->window_height, opengl->max_viewport_height);  in opengl_prepare_vertex()
870 …av_log(opengl, AV_LOG_WARNING, "Too big viewport requested, limited to %dx%d", opengl->window_widt…  in opengl_prepare_vertex()
872     glViewport(0, 0, opengl->window_width, opengl->window_height);  in opengl_prepare_vertex()
873     opengl_make_ortho(opengl->projection_matrix,  in opengl_prepare_vertex()
874                       - (float)opengl->window_width  / 2.0f, (float)opengl->window_width  / 2.0f,  in opengl_prepare_vertex()
875                       - (float)opengl->window_height / 2.0f, (float)opengl->window_height / 2.0f,  in opengl_prepare_vertex()
877     opengl_make_identity(opengl->model_view_matrix);  in opengl_prepare_vertex()
881     opengl->vertex[0].z = opengl->vertex[1].z = opengl->vertex[2].z = opengl->vertex[3].z = 0.0f;  in opengl_prepare_vertex()
882     opengl->vertex[0].x = opengl->vertex[1].x = - (float)opengl->picture_width / 2.0f;  in opengl_prepare_vertex()
883     opengl->vertex[2].x = opengl->vertex[3].x =   (float)opengl->picture_width / 2.0f;  in opengl_prepare_vertex()
884     opengl->vertex[1].y = opengl->vertex[2].y = - (float)opengl->picture_height / 2.0f;  in opengl_prepare_vertex()
885     opengl->vertex[0].y = opengl->vertex[3].y =   (float)opengl->picture_height / 2.0f;  in opengl_prepare_vertex()
887     opengl_get_texture_size(opengl, opengl->width, opengl->height, &tex_w, &tex_h);  in opengl_prepare_vertex()
889     opengl->vertex[0].s0 = 0.0f;  in opengl_prepare_vertex()
890     opengl->vertex[0].t0 = 0.0f;  in opengl_prepare_vertex()
891     opengl->vertex[1].s0 = 0.0f;  in opengl_prepare_vertex()
892     opengl->vertex[1].t0 = (float)opengl->height / (float)tex_h;  in opengl_prepare_vertex()
893     opengl->vertex[2].s0 = (float)opengl->width  / (float)tex_w;  in opengl_prepare_vertex()
894     opengl->vertex[2].t0 = (float)opengl->height / (float)tex_h;  in opengl_prepare_vertex()
895     opengl->vertex[3].s0 = (float)opengl->width  / (float)tex_w;  in opengl_prepare_vertex()
896     opengl->vertex[3].t0 = 0.0f;  in opengl_prepare_vertex()
898     opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, opengl->vertex_buffer);  in opengl_prepare_vertex()
899 …opengl->glprocs.glBufferData(FF_GL_ARRAY_BUFFER, sizeof(opengl->vertex), opengl->vertex, FF_GL_STA…  in opengl_prepare_vertex()
900     opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, 0);  in opengl_prepare_vertex()
901     OPENGL_ERROR_CHECK(opengl);  in opengl_prepare_vertex()
907 static int opengl_prepare(OpenGLContext *opengl)  in opengl_prepare()  argument
910     opengl->glprocs.glUseProgram(opengl->program);  in opengl_prepare()
911 …opengl->glprocs.glUniformMatrix4fv(opengl->projection_matrix_location, 1, GL_FALSE, opengl->projec…  in opengl_prepare()
912 …opengl->glprocs.glUniformMatrix4fv(opengl->model_view_matrix_location, 1, GL_FALSE, opengl->model_…  in opengl_prepare()
914         if (opengl->texture_location[i] != -1) {  in opengl_prepare()
915             opengl->glprocs.glActiveTexture(GL_TEXTURE0 + i);  in opengl_prepare()
916             glBindTexture(GL_TEXTURE_2D, opengl->texture_name[i]);  in opengl_prepare()
917             opengl->glprocs.glUniform1i(opengl->texture_location[i], i);  in opengl_prepare()
919     if (opengl->color_map_location != -1)  in opengl_prepare()
920 …    opengl->glprocs.glUniformMatrix4fv(opengl->color_map_location, 1, GL_FALSE, opengl->color_map);  in opengl_prepare()
921     if (opengl->chroma_div_h_location != -1)  in opengl_prepare()
922         opengl->glprocs.glUniform1f(opengl->chroma_div_h_location, opengl->chroma_div_h);  in opengl_prepare()
923     if (opengl->chroma_div_w_location != -1)  in opengl_prepare()
924         opengl->glprocs.glUniform1f(opengl->chroma_div_w_location, opengl->chroma_div_w);  in opengl_prepare()
926     OPENGL_ERROR_CHECK(opengl);  in opengl_prepare()
934     OpenGLContext *opengl = h->priv_data;  in opengl_create_window()  local
937     if (!opengl->no_window) {  in opengl_create_window()
940             av_log(opengl, AV_LOG_ERROR, "Cannot create default SDL window.\n");  in opengl_create_window()
944 …   av_log(opengl, AV_LOG_ERROR, "FFmpeg is compiled without SDL. Cannot create default window.\n");  in opengl_create_window()
950         message.width = opengl->window_width;  in opengl_create_window()
951         message.height = opengl->window_height;  in opengl_create_window()
954             av_log(opengl, AV_LOG_ERROR, "Application failed to create window buffer.\n");  in opengl_create_window()
958             av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");  in opengl_create_window()
968     OpenGLContext *opengl = h->priv_data;  in opengl_release_window()  local
969     if (!opengl->no_window) {  in opengl_release_window()
971         SDL_GL_DeleteContext(opengl->glcontext);  in opengl_release_window()
972         SDL_DestroyWindow(opengl->window);  in opengl_release_window()
976         av_log(opengl, AV_LOG_ERROR, "Application failed to release window buffer.\n");  in opengl_release_window()
984     OpenGLContext *opengl = h->priv_data;  in opengl_write_trailer()  local
986     if (opengl->no_window &&  in opengl_write_trailer()
988         av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");  in opengl_write_trailer()
990     opengl_deinit_context(opengl);  in opengl_write_trailer()
996 static av_cold int opengl_init_context(OpenGLContext *opengl)  in opengl_init_context()  argument
1001     if ((ret = opengl_compile_shaders(opengl, opengl->pix_fmt)) < 0)  in opengl_init_context()
1004     desc = av_pix_fmt_desc_get(opengl->pix_fmt);  in opengl_init_context()
1006     glGenTextures(desc->nb_components, opengl->texture_name);  in opengl_init_context()
1008     opengl->glprocs.glGenBuffers(2, &opengl->index_buffer);  in opengl_init_context()
1009     if (!opengl->index_buffer || !opengl->vertex_buffer) {  in opengl_init_context()
1010         av_log(opengl, AV_LOG_ERROR, "Buffer generation failed.\n");  in opengl_init_context()
1015     opengl_configure_texture(opengl, opengl->texture_name[0], opengl->width, opengl->height);  in opengl_init_context()
1019         if (opengl->non_pow_2_textures) {  in opengl_init_context()
1020             opengl->chroma_div_w = 1.0f;  in opengl_init_context()
1021             opengl->chroma_div_h = 1.0f;  in opengl_init_context()
1023             opengl->chroma_div_w = 1 << desc->log2_chroma_w;  in opengl_init_context()
1024             opengl->chroma_div_h = 1 << desc->log2_chroma_h;  in opengl_init_context()
1027             if (opengl->non_pow_2_textures)  in opengl_init_context()
1028                 opengl_configure_texture(opengl, opengl->texture_name[i],  in opengl_init_context()
1029                         AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w),  in opengl_init_context()
1030                         AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h));  in opengl_init_context()
1032 …          opengl_configure_texture(opengl, opengl->texture_name[i], opengl->width, opengl->height);  in opengl_init_context()
1034 …          opengl_configure_texture(opengl, opengl->texture_name[3], opengl->width, opengl->height);  in opengl_init_context()
1037     opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, opengl->index_buffer);  in opengl_init_context()
1038 …opengl->glprocs.glBufferData(FF_GL_ELEMENT_ARRAY_BUFFER, sizeof(g_index), g_index, FF_GL_STATIC_DR…  in opengl_init_context()
1039     opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, 0);  in opengl_init_context()
1044     glClearColor((float)opengl->background[0] / 255.0f, (float)opengl->background[1] / 255.0f,  in opengl_init_context()
1045                  (float)opengl->background[2] / 255.0f, 1.0f);  in opengl_init_context()
1048     OPENGL_ERROR_CHECK(opengl);  in opengl_init_context()
1057     OpenGLContext *opengl = h->priv_data;  in opengl_write_header()  local
1065 … av_log(opengl, AV_LOG_ERROR, "Only a single raw or wrapped avframe video stream is supported.\n");  in opengl_write_header()
1069     opengl->width = st->codecpar->width;  in opengl_write_header()
1070     opengl->height = st->codecpar->height;  in opengl_write_header()
1071     opengl->pix_fmt = st->codecpar->format;  in opengl_write_header()
1072     if (!opengl->window_width)  in opengl_write_header()
1073         opengl->window_width = opengl->width;  in opengl_write_header()
1074     if (!opengl->window_height)  in opengl_write_header()
1075         opengl->window_height = opengl->height;  in opengl_write_header()
1077     if (!opengl->window_title && !opengl->no_window)  in opengl_write_header()
1078         opengl->window_title = av_strdup(h->url);  in opengl_write_header()
1086     if (opengl->width > opengl->max_texture_size || opengl->height > opengl->max_texture_size) {  in opengl_write_header()
1087         av_log(opengl, AV_LOG_ERROR, "Too big picture %dx%d, max supported size is %dx%d\n",  in opengl_write_header()
1088                opengl->width, opengl->height, opengl->max_texture_size, opengl->max_texture_size);  in opengl_write_header()
1093     if ((ret = opengl_load_procedures(opengl)) < 0)  in opengl_write_header()
1096     opengl_fill_color_map(opengl);  in opengl_write_header()
1097     opengl_get_texture_params(opengl);  in opengl_write_header()
1099     if ((ret = opengl_init_context(opengl)) < 0)  in opengl_write_header()
1108     if (!opengl->no_window)  in opengl_write_header()
1109         SDL_GL_SwapWindow(opengl->window);  in opengl_write_header()
1111     if (opengl->no_window &&  in opengl_write_header()
1113         av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n");  in opengl_write_header()
1118     OPENGL_ERROR_CHECK(opengl);  in opengl_write_header()
1120     opengl->inited = 1;  in opengl_write_header()
1128 static uint8_t* opengl_get_plane_pointer(OpenGLContext *opengl, AVPacket *pkt, int comp_index,  in opengl_get_plane_pointer()  argument
1132     int wordsize = opengl_type_size(opengl->type);  in opengl_get_plane_pointer()
1133     int width_chroma = AV_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w);  in opengl_get_plane_pointer()
1134     int height_chroma = AV_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h);  in opengl_get_plane_pointer()
1141         data += opengl->width * opengl->height * wordsize;  in opengl_get_plane_pointer()
1144         data += opengl->width * opengl->height * wordsize;  in opengl_get_plane_pointer()
1148         data += opengl->width * opengl->height * wordsize;  in opengl_get_plane_pointer()
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; \
1164     glBindTexture(GL_TEXTURE_2D, opengl->texture_name[comp_index]);                         \
1167         int bytes_per_pixel = opengl_type_size(opengl->type);                               \
1172             (opengl->unpack_subimage || ((length / bytes_per_pixel) == width))) {           \
1177                             opengl->format, opengl->type, data);                            \
1184                                 opengl->format, opengl->type, data);                        \
1189         data = opengl_get_plane_pointer(opengl, input, comp_index, desc);                   \
1191                         opengl->format, opengl->type, data);                                \
1197     OpenGLContext *opengl = h->priv_data;  in opengl_draw()  local
1203     if (!opengl->no_window && (ret = opengl_sdl_process_events(h)) < 0)  in opengl_draw()
1206     if (opengl->no_window &&  in opengl_draw()
1208         av_log(opengl, AV_LOG_ERROR, "Application failed to prepare window buffer.\n");  in opengl_draw()
1226     OPENGL_ERROR_CHECK(opengl);  in opengl_draw()
1228     if ((ret = opengl_prepare(opengl)) < 0)  in opengl_draw()
1231     opengl->glprocs.glBindBuffer(FF_GL_ARRAY_BUFFER, opengl->vertex_buffer);  in opengl_draw()
1232     opengl->glprocs.glBindBuffer(FF_GL_ELEMENT_ARRAY_BUFFER, opengl->index_buffer);  in opengl_draw()
1233 …opengl->glprocs.glVertexAttribPointer(opengl->position_attrib, 3, GL_FLOAT, GL_FALSE, sizeof(OpenG…  in opengl_draw()
1234     opengl->glprocs.glEnableVertexAttribArray(opengl->position_attrib);  in opengl_draw()
1235 …opengl->glprocs.glVertexAttribPointer(opengl->texture_coords_attrib, 2, GL_FLOAT, GL_FALSE, sizeof…  in opengl_draw()
1236     opengl->glprocs.glEnableVertexAttribArray(opengl->texture_coords_attrib);  in opengl_draw()
1241     OPENGL_ERROR_CHECK(opengl);  in opengl_draw()
1244     if (!opengl->no_window)  in opengl_draw()
1245         SDL_GL_SwapWindow(opengl->window);  in opengl_draw()
1247     if (opengl->no_window &&  in opengl_draw()
1249         av_log(opengl, AV_LOG_ERROR, "Application failed to display window buffer.\n");  in opengl_draw()
1288     .class_name = "opengl outdev",
1296     .name           = "opengl",
1297     .long_name      = NULL_IF_CONFIG_SMALL("OpenGL output"),