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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*
* You can alternatively redistribute this file and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*/
#include <OpenGL/OpenGL.h>
#include <dlfcn.h>
#include "video/out/cocoa_common.h"
#include "osdep/macosx_versions.h"
#include "common.h"
struct cgl_context {
CGLPixelFormatObj pix;
CGLContextObj ctx;
};
static int set_swap_interval(int enabled)
{
CGLContextObj ctx = CGLGetCurrentContext();
CGLError err = CGLSetParameter(ctx, kCGLCPSwapInterval, &enabled);
return (err == kCGLNoError) ? 0 : -1;
}
static int cgl_color_size(struct MPGLContext *ctx)
{
struct cgl_context *p = ctx->priv;
GLint value;
CGLDescribePixelFormat(p->pix, 0, kCGLPFAColorSize, &value);
return value > 16 ? 8 : 5;
}
static void *cocoa_glgetaddr(const char *s)
{
void *ret = NULL;
void *handle = dlopen(
"/System/Library/Frameworks/OpenGL.framework/OpenGL",
RTLD_LAZY | RTLD_LOCAL);
if (!handle)
return NULL;
ret = dlsym(handle, s);
dlclose(handle);
return ret;
}
static CGLError test_gl_version(struct vo *vo,
CGLContextObj *ctx,
CGLPixelFormatObj *pix,
CGLOpenGLProfile version)
{
CGLPixelFormatAttribute attrs[] = {
kCGLPFAOpenGLProfile,
(CGLPixelFormatAttribute) version,
kCGLPFADoubleBuffer,
kCGLPFAAccelerated,
#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_8
// leave this as the last entry of the array to not break the fallback
// code
kCGLPFASupportsAutomaticGraphicsSwitching,
#endif
0
};
GLint npix;
CGLError err;
err = CGLChoosePixelFormat(attrs, pix, &npix);
if (err == kCGLBadAttribute) {
// kCGLPFASupportsAutomaticGraphicsSwitching is probably not supported
// by the current hardware. Falling back to not using it.
attrs[MP_ARRAY_SIZE(attrs) - 2] = 0;
err = CGLChoosePixelFormat(attrs, pix, &npix);
}
if (err != kCGLNoError) {
MP_ERR(vo, "error creating CGL pixel format: %s (%d)\n",
CGLErrorString(err), err);
goto error_out;
}
err = CGLCreateContext(*pix, 0, ctx);
error_out:
return err;
}
static bool create_gl_context(struct MPGLContext *ctx, int vo_flags)
{
struct cgl_context *p = ctx->priv;
CGLError err;
CGLOpenGLProfile gl_versions[] = {
kCGLOGLPVersion_3_2_Core,
kCGLOGLPVersion_Legacy,
};
for (int n = 0; n < MP_ARRAY_SIZE(gl_versions); n++) {
err = test_gl_version(ctx->vo, &p->ctx, &p->pix, gl_versions[n]);
if (err == kCGLNoError)
break;
}
if (err != kCGLNoError) {
MP_FATAL(ctx->vo, "error creating CGL context: %s (%d)\n",
CGLErrorString(err), err);
return false;
}
vo_cocoa_set_opengl_ctx(ctx->vo, p->ctx);
CGLSetCurrentContext(p->ctx);
if (vo_flags & VOFLAG_ALPHA)
CGLSetParameter(p->ctx, kCGLCPSurfaceOpacity, &(GLint){0});
mpgl_load_functions(ctx->gl, (void *)cocoa_glgetaddr, NULL, ctx->vo->log);
ctx->gl->fb_r = ctx->gl->fb_g = ctx->gl->fb_b = cgl_color_size(ctx);
CGLReleasePixelFormat(p->pix);
return true;
}
static void cocoa_uninit(MPGLContext *ctx)
{
struct cgl_context *p = ctx->priv;
CGLReleaseContext(p->ctx);
vo_cocoa_uninit(ctx->vo);
}
static int cocoa_init(MPGLContext *ctx, int vo_flags)
{
vo_cocoa_init(ctx->vo);
if (!create_gl_context(ctx, vo_flags))
return -1;
ctx->gl->SwapInterval = set_swap_interval;
return 0;
}
static int cocoa_reconfig(struct MPGLContext *ctx)
{
vo_cocoa_config_window(ctx->vo);
return 0;
}
static int cocoa_control(struct MPGLContext *ctx, int *events, int request,
void *arg)
{
return vo_cocoa_control(ctx->vo, events, request, arg);
}
static void cocoa_swap_buffers(struct MPGLContext *ctx)
{
vo_cocoa_swap_buffers(ctx->vo);
}
const struct mpgl_driver mpgl_driver_cocoa = {
.name = "cocoa",
.priv_size = sizeof(struct cgl_context),
.init = cocoa_init,
.reconfig = cocoa_reconfig,
.swap_buffers = cocoa_swap_buffers,
.control = cocoa_control,
.uninit = cocoa_uninit,
};
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