vo_opengl: split backend code from common.c to context.c

Now common.c only contains the code for the function loader, while
context.c contains the backend loader/dispatcher.

Not calling it "backend.c", because the central struct is called
MPGLContext.

1 files changed, 1 insertions, 195 deletions

diff --git a/video/out/opengl/common.c b/video/out/opengl/common.c
index 00cd535301..80e0348a3c 100644
--- a/video/out/opengl/common.c
+++ b/video/out/opengl/common.c
@@ -26,11 +26,6 @@
  * version 2.1 of the License, or (at your option) any later version.
  */
 
-/**
- * \file gl_common.c
- * \brief OpenGL helper functions used by vo_gl.c and vo_gl2.c
- */
-
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -38,11 +33,9 @@
 #include <stdbool.h>
 #include <math.h>
 #include <assert.h>
-#include "talloc.h"
+
 #include "common.h"
 #include "common/common.h"
-#include "options/options.h"
-#include "options/m_option.h"
 
 // This guesses if the current GL context is a suspected software renderer.
 static bool is_software_gl(GL *gl)
@@ -534,190 +527,3 @@ void mpgl_load_functions(GL *gl, void *(*getProcAddress)(const GLubyte *),
 {
     mpgl_load_functions2(gl, get_procaddr_wrapper, getProcAddress, ext2, log);
 }
-
-extern const struct mpgl_driver mpgl_driver_x11;
-extern const struct mpgl_driver mpgl_driver_x11egl;
-extern const struct mpgl_driver mpgl_driver_x11_probe;
-extern const struct mpgl_driver mpgl_driver_drm_egl;
-extern const struct mpgl_driver mpgl_driver_cocoa;
-extern const struct mpgl_driver mpgl_driver_wayland;
-extern const struct mpgl_driver mpgl_driver_w32;
-extern const struct mpgl_driver mpgl_driver_angle;
-extern const struct mpgl_driver mpgl_driver_dxinterop;
-extern const struct mpgl_driver mpgl_driver_rpi;
-
-static const struct mpgl_driver *const backends[] = {
-#if HAVE_RPI
-    &mpgl_driver_rpi,
-#endif
-#if HAVE_GL_COCOA
-    &mpgl_driver_cocoa,
-#endif
-#if HAVE_EGL_ANGLE
-    &mpgl_driver_angle,
-#endif
-#if HAVE_GL_WIN32
-    &mpgl_driver_w32,
-#endif
-#if HAVE_GL_DXINTEROP
-    &mpgl_driver_dxinterop,
-#endif
-#if HAVE_GL_WAYLAND
-    &mpgl_driver_wayland,
-#endif
-#if HAVE_GL_X11
-    &mpgl_driver_x11_probe,
-#endif
-#if HAVE_EGL_X11
-    &mpgl_driver_x11egl,
-#endif
-#if HAVE_GL_X11
-    &mpgl_driver_x11,
-#endif
-#if HAVE_EGL_DRM
-    &mpgl_driver_drm_egl,
-#endif
-};
-
-int mpgl_find_backend(const char *name)
-{
-    if (name == NULL || strcmp(name, "auto") == 0)
-        return -1;
-    for (int n = 0; n < MP_ARRAY_SIZE(backends); n++) {
-        if (strcmp(backends[n]->name, name) == 0)
-            return n;
-    }
-    return -2;
-}
-
-int mpgl_validate_backend_opt(struct mp_log *log, const struct m_option *opt,
-                              struct bstr name, struct bstr param)
-{
-    if (bstr_equals0(param, "help")) {
-        mp_info(log, "OpenGL windowing backends:\n");
-        mp_info(log, "    auto (autodetect)\n");
-        for (int n = 0; n < MP_ARRAY_SIZE(backends); n++)
-            mp_info(log, "    %s\n", backends[n]->name);
-        return M_OPT_EXIT - 1;
-    }
-    char s[20];
-    snprintf(s, sizeof(s), "%.*s", BSTR_P(param));
-    return mpgl_find_backend(s) >= -1 ? 1 : M_OPT_INVALID;
-}
-
-#if HAVE_C11_TLS
-static _Thread_local MPGLContext *current_context;
-
-static void * GLAPIENTRY get_native_display(const char *name)
-{
-    if (current_context && current_context->native_display_type &&
-        name && strcmp(current_context->native_display_type, name) == 0)
-        return current_context->native_display;
-    return NULL;
-}
-
-static void set_current_context(MPGLContext *context)
-{
-    current_context = context;
-    if (context && !context->gl->MPGetNativeDisplay)
-        context->gl->MPGetNativeDisplay = get_native_display;
-}
-#else
-static void set_current_context(MPGLContext *context)
-{
-}
-#endif
-
-static MPGLContext *init_backend(struct vo *vo, const struct mpgl_driver *driver,
-                                 bool probing, int vo_flags)
-{
-    MPGLContext *ctx = talloc_ptrtype(NULL, ctx);
-    *ctx = (MPGLContext) {
-        .gl = talloc_zero(ctx, GL),
-        .vo = vo,
-        .driver = driver,
-    };
-    bool old_probing = vo->probing;
-    vo->probing = probing; // hack; kill it once backends are separate
-    MP_VERBOSE(vo, "Initializing OpenGL backend '%s'\n", ctx->driver->name);
-    ctx->priv = talloc_zero_size(ctx, ctx->driver->priv_size);
-    if (ctx->driver->init(ctx, vo_flags) < 0) {
-        vo->probing = old_probing;
-        talloc_free(ctx);
-        return NULL;
-    }
-    vo->probing = old_probing;
-
-    if (!ctx->gl->version && !ctx->gl->es)
-        goto cleanup;
-
-    if (probing && ctx->gl->es && (vo_flags & VOFLAG_NO_GLES)) {
-        MP_VERBOSE(ctx->vo, "Skipping GLES backend.\n");
-        goto cleanup;
-    }
-
-    if (ctx->gl->mpgl_caps & MPGL_CAP_SW) {
-        MP_WARN(ctx->vo, "Suspected software renderer or indirect context.\n");
-        if (vo->probing && !(vo_flags & VOFLAG_SW))
-            goto cleanup;
-    }
-
-    ctx->gl->debug_context = !!(vo_flags & VOFLAG_GL_DEBUG);
-
-    set_current_context(ctx);
-
-    return ctx;
-
-cleanup:
-    mpgl_uninit(ctx);
-    return NULL;
-}
-
-// Create a VO window and create a GL context on it.
-//  vo_flags: passed to the backend's create window function
-MPGLContext *mpgl_init(struct vo *vo, const char *backend_name, int vo_flags)
-{
-    MPGLContext *ctx = NULL;
-    int index = mpgl_find_backend(backend_name);
-    if (index == -1) {
-        for (int n = 0; n < MP_ARRAY_SIZE(backends); n++) {
-            ctx = init_backend(vo, backends[n], true, vo_flags);
-            if (ctx)
-                break;
-        }
-        // VO forced, but no backend is ok => force the first that works at all
-        if (!ctx && !vo->probing) {
-            for (int n = 0; n < MP_ARRAY_SIZE(backends); n++) {
-                ctx = init_backend(vo, backends[n], false, vo_flags);
-                if (ctx)
-                    break;
-            }
-        }
-    } else if (index >= 0) {
-        ctx = init_backend(vo, backends[index], false, vo_flags);
-    }
-    return ctx;
-}
-
-int mpgl_reconfig_window(struct MPGLContext *ctx)
-{
-    return ctx->driver->reconfig(ctx);
-}
-
-int mpgl_control(struct MPGLContext *ctx, int *events, int request, void *arg)
-{
-    return ctx->driver->control(ctx, events, request, arg);
-}
-
-void mpgl_swap_buffers(struct MPGLContext *ctx)
-{
-    ctx->driver->swap_buffers(ctx);
-}
-
-void mpgl_uninit(MPGLContext *ctx)
-{
-    set_current_context(NULL);
-    if (ctx)
-        ctx->driver->uninit(ctx);
-    talloc_free(ctx);
-}