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/*
* 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 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/>.
*/
#include <IOSurface/IOSurface.h>
#include <CoreVideo/CoreVideo.h>
#include <OpenGL/OpenGL.h>
#include <OpenGL/CGLIOSurface.h>
#include "video/mp_image_pool.h"
#include "gl_hwdec.h"
struct vda_gl_plane_format {
GLenum gl_format;
GLenum gl_type;
GLenum gl_internal_format;
};
struct vda_format {
uint32_t cvpixfmt;
int imgfmt;
int planes;
struct vda_gl_plane_format gl[MP_MAX_PLANES];
};
struct priv {
CVPixelBufferRef pbuf;
GLuint gl_planes[MP_MAX_PLANES];
struct mp_hwdec_ctx hwctx;
};
static struct vda_format vda_formats[] = {
{
.cvpixfmt = kCVPixelFormatType_422YpCbCr8,
.imgfmt = IMGFMT_UYVY,
.planes = 1,
.gl = {
{ GL_RGB_422_APPLE, GL_UNSIGNED_SHORT_8_8_APPLE, GL_RGB }
}
}, {
.cvpixfmt = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
.imgfmt = IMGFMT_NV12,
.planes = 2,
.gl = {
{ GL_RED, GL_UNSIGNED_BYTE, GL_RED },
{ GL_RG, GL_UNSIGNED_BYTE, GL_RG } ,
}
}
};
static struct vda_format *vda_get_gl_format(uint32_t cvpixfmt)
{
for (int i = 0; i < MP_ARRAY_SIZE(vda_formats); i++) {
if (vda_formats[i].cvpixfmt == cvpixfmt)
return &vda_formats[i];
}
return NULL;
}
static struct vda_format *vda_get_gl_format_from_imgfmt(uint32_t imgfmt)
{
for (int i = 0; i < MP_ARRAY_SIZE(vda_formats); i++) {
if (vda_formats[i].imgfmt == imgfmt)
return &vda_formats[i];
}
return NULL;
}
static struct mp_image *download_image(struct mp_hwdec_ctx *ctx,
struct mp_image *hw_image,
struct mp_image_pool *swpool)
{
if (hw_image->imgfmt != IMGFMT_VDA)
return NULL;
CVPixelBufferRef pbuf = (CVPixelBufferRef)hw_image->planes[3];
CVPixelBufferLockBaseAddress(pbuf, 0);
size_t width = CVPixelBufferGetWidth(pbuf);
size_t height = CVPixelBufferGetHeight(pbuf);
uint32_t cvpixfmt = CVPixelBufferGetPixelFormatType(pbuf);
struct vda_format *f = vda_get_gl_format(cvpixfmt);
struct mp_image img = {0};
mp_image_setfmt(&img, f->imgfmt);
mp_image_set_size(&img, width, height);
for (int i = 0; i < f->planes; i++) {
void *base = CVPixelBufferGetBaseAddressOfPlane(pbuf, i);
size_t stride = CVPixelBufferGetBytesPerRowOfPlane(pbuf, i);
img.planes[i] = base;
img.stride[i] = stride;
}
mp_image_copy_attributes(&img, hw_image);
struct mp_image *image = mp_image_pool_new_copy(swpool, &img);
CVPixelBufferUnlockBaseAddress(pbuf, 0);
return image;
}
static bool check_hwdec(struct gl_hwdec *hw)
{
if (hw->gl_texture_target != GL_TEXTURE_RECTANGLE) {
MP_ERR(hw, "must use rectangle video textures with VDA\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)
{
struct priv *p = talloc_zero(hw, struct priv);
hw->priv = p;
hw->gl_texture_target = GL_TEXTURE_RECTANGLE;
#if HAVE_VDA_DEFAULT_INIT2
struct vda_format *f = vda_get_gl_format_from_imgfmt(IMGFMT_NV12);
#else
struct vda_format *f = vda_get_gl_format_from_imgfmt(IMGFMT_UYVY);
#endif
hw->converted_imgfmt = f->imgfmt;
if (!check_hwdec(hw))
return -1;
hw->hwctx = &p->hwctx;
hw->hwctx->type = HWDEC_VDA;
hw->hwctx->download_image = download_image;
GL *gl = hw->gl;
gl->GenTextures(MP_MAX_PLANES, p->gl_planes);
return 0;
}
static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
{
params->imgfmt = hw->driver->imgfmt;
return 0;
}
static int map_image(struct gl_hwdec *hw, struct mp_image *hw_image,
GLuint *out_textures)
{
if (!check_hwdec(hw))
return -1;
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);
uint32_t cvpixfmt = CVPixelBufferGetPixelFormatType(p->pbuf);
struct vda_format *f = vda_get_gl_format(cvpixfmt);
if (!f) {
MP_ERR(hw, "CVPixelBuffer has unsupported format type\n");
return -1;
}
const bool planar = CVPixelBufferIsPlanar(p->pbuf);
const int planes = CVPixelBufferGetPlaneCount(p->pbuf);
assert(planar && planes == f->planes || f->planes == 1);
for (int i = 0; i < f->planes; i++) {
gl->BindTexture(hw->gl_texture_target, p->gl_planes[i]);
CGLError err = CGLTexImageIOSurface2D(
CGLGetCurrentContext(), hw->gl_texture_target,
f->gl[i].gl_internal_format,
IOSurfaceGetWidthOfPlane(surface, i),
IOSurfaceGetHeightOfPlane(surface, i),
f->gl[i].gl_format, f->gl[i].gl_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(hw->gl_texture_target, 0);
out_textures[i] = p->gl_planes[i];
}
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);
}
const struct gl_hwdec_driver gl_hwdec_vda = {
.api_name = "vda",
.imgfmt = IMGFMT_VDA,
.create = create,
.reinit = reinit,
.map_image = map_image,
.destroy = destroy,
};
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