mpv/video/out/opengl/hwdec_osx.c

170 lines
4.5 KiB
C

/*
* Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it 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.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <IOSurface/IOSurface.h>
#include <CoreVideo/CoreVideo.h>
#include <OpenGL/OpenGL.h>
#include <OpenGL/CGLIOSurface.h>
#include "video/mp_image_pool.h"
#include "video/vt.h"
#include "formats.h"
#include "hwdec.h"
struct priv {
struct mp_hwdec_ctx hwctx;
CVPixelBufferRef pbuf;
GLuint gl_planes[MP_MAX_PLANES];
struct gl_imgfmt_desc desc;
};
static bool check_hwdec(struct gl_hwdec *hw)
{
if (hw->gl->version < 300) {
MP_ERR(hw, "need >= OpenGL 3.0 for core rectangle texture support\n");
return false;
}
if (!CGLGetCurrentContext()) {
MP_ERR(hw, "need cocoa opengl backend to be active");
return false;
}
return true;
}
static int create(struct gl_hwdec *hw)
{
if (!check_hwdec(hw))
return -1;
struct priv *p = talloc_zero(hw, struct priv);
hw->priv = p;
hw->gl->GenTextures(MP_MAX_PLANES, p->gl_planes);
p->hwctx = (struct mp_hwdec_ctx){
.type = HWDEC_VIDEOTOOLBOX,
.download_image = mp_vt_download_image,
.ctx = &p->hwctx,
};
hwdec_devices_add(hw->devs, &p->hwctx);
return 0;
}
static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
{
struct priv *p = hw->priv;
assert(params->imgfmt == hw->driver->imgfmt);
if (!params->hw_subfmt) {
MP_ERR(hw, "Unsupported CVPixelBuffer format.\n");
return -1;
}
if (!gl_get_imgfmt_desc(hw->gl, params->hw_subfmt, &p->desc)) {
MP_ERR(hw, "Unsupported texture format.\n");
return -1;
}
params->imgfmt = params->hw_subfmt;
params->hw_subfmt = 0;
return 0;
}
static int map_frame(struct gl_hwdec *hw, struct mp_image *hw_image,
struct gl_hwdec_frame *out_frame)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
CVPixelBufferRelease(p->pbuf);
p->pbuf = (CVPixelBufferRef)hw_image->planes[3];
CVPixelBufferRetain(p->pbuf);
IOSurfaceRef surface = CVPixelBufferGetIOSurface(p->pbuf);
if (!surface) {
MP_ERR(hw, "CVPixelBuffer has no IOSurface\n");
return -1;
}
const bool planar = CVPixelBufferIsPlanar(p->pbuf);
const int planes = CVPixelBufferGetPlaneCount(p->pbuf);
assert((planar && planes == p->desc.num_planes) || p->desc.num_planes == 1);
GLenum gl_target = GL_TEXTURE_RECTANGLE;
for (int i = 0; i < p->desc.num_planes; i++) {
const struct gl_format *fmt = p->desc.planes[i];
gl->BindTexture(gl_target, p->gl_planes[i]);
CGLError err = CGLTexImageIOSurface2D(
CGLGetCurrentContext(), gl_target,
fmt->internal_format,
IOSurfaceGetWidthOfPlane(surface, i),
IOSurfaceGetHeightOfPlane(surface, i),
fmt->format, fmt->type, surface, i);
if (err != kCGLNoError)
MP_ERR(hw, "error creating IOSurface texture for plane %d: %s (%x)\n",
i, CGLErrorString(err), gl->GetError());
gl->BindTexture(gl_target, 0);
out_frame->planes[i] = (struct gl_hwdec_plane){
.gl_texture = p->gl_planes[i],
.gl_target = gl_target,
.tex_w = IOSurfaceGetWidthOfPlane(surface, i),
.tex_h = IOSurfaceGetHeightOfPlane(surface, i),
};
}
snprintf(out_frame->swizzle, sizeof(out_frame->swizzle), "%s",
p->desc.swizzle);
return 0;
}
static void destroy(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
CVPixelBufferRelease(p->pbuf);
gl->DeleteTextures(MP_MAX_PLANES, p->gl_planes);
hwdec_devices_remove(hw->devs, &p->hwctx);
}
const struct gl_hwdec_driver gl_hwdec_videotoolbox = {
.name = "videotoolbox",
.api = HWDEC_VIDEOTOOLBOX,
.imgfmt = IMGFMT_VIDEOTOOLBOX,
.create = create,
.reinit = reinit,
.map_frame = map_frame,
.destroy = destroy,
};