mirror of
https://github.com/mpv-player/mpv
synced 2024-12-30 11:02:10 +00:00
ca956af446
Previous API worked under the assumption that download_image is always called after map_image. In practice this is true, but it's better to have a much generic API that doesn't depend on the order in which the functions are called.
148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
/*
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* Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
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*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <IOSurface/IOSurface.h>
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#include <CoreVideo/CoreVideo.h>
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#include <OpenGL/OpenGL.h>
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#include "video/decode/dec_video.h"
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#include "cocoa_common.h"
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#include "gl_common.h"
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struct priv {
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CVPixelBufferRef pbuf;
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GLuint gl_texture;
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};
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static bool check_hwdec(struct gl_hwdec *hw)
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{
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struct vo *vo = hw->mpgl->vo;
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if (hw->gl_texture_target != GL_TEXTURE_RECTANGLE) {
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MP_ERR(hw, "must use rectangle video textures with VDA\n");
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return false;
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}
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if (!vo->cocoa) {
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MP_ERR(hw, "need cocoa opengl backend to be active");
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return false;
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}
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return true;
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}
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static int create(struct gl_hwdec *hw)
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{
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struct priv *p = talloc_zero(hw, struct priv);
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hw->priv = p;
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hw->converted_imgfmt = IMGFMT_UYVY;
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hw->gl_texture_target = GL_TEXTURE_RECTANGLE;
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if (!check_hwdec(hw))
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return -1;
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GL *gl = hw->mpgl->gl;
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gl->GenTextures(1, &p->gl_texture);
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return 0;
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}
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static int reinit(struct gl_hwdec *hw, const struct mp_image_params *params)
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{
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return 0;
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}
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static int map_image(struct gl_hwdec *hw, struct mp_image *hw_image,
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GLuint *out_textures)
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{
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if (!check_hwdec(hw))
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return -1;
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struct priv *p = hw->priv;
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struct vo *vo = hw->mpgl->vo;
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GL *gl = hw->mpgl->gl;
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CVPixelBufferRelease(p->pbuf);
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p->pbuf = (CVPixelBufferRef)hw_image->planes[3];
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CVPixelBufferRetain(p->pbuf);
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IOSurfaceRef surface = CVPixelBufferGetIOSurface(p->pbuf);
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gl->BindTexture(hw->gl_texture_target, p->gl_texture);
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CGLError err = CGLTexImageIOSurface2D(
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vo_cocoa_cgl_context(vo), hw->gl_texture_target, GL_RGB,
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CVPixelBufferGetWidth(p->pbuf), CVPixelBufferGetHeight(p->pbuf),
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GL_RGB_422_APPLE, GL_UNSIGNED_SHORT_8_8_APPLE, surface, 0);
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if (err != kCGLNoError)
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MP_ERR(vo, "error creating IOSurface texture: %s (%x)\n",
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CGLErrorString(err), gl->GetError());
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gl->BindTexture(hw->gl_texture_target, 0);
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out_textures[0] = p->gl_texture;
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return 0;
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}
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static void unmap_image(struct gl_hwdec *hw) { }
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static struct mp_image *download_image(struct gl_hwdec *hw,
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struct mp_image *hw_image)
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{
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CVPixelBufferRef pbuf = (CVPixelBufferRef)hw_image->planes[3];
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CVPixelBufferLockBaseAddress(pbuf, 0);
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void *base = CVPixelBufferGetBaseAddress(pbuf);
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size_t width = CVPixelBufferGetWidth(pbuf);
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size_t height = CVPixelBufferGetHeight(pbuf);
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size_t stride = CVPixelBufferGetBytesPerRow(pbuf);
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struct mp_image img = {0};
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mp_image_setfmt(&img, IMGFMT_UYVY);
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mp_image_set_size(&img, width, height);
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img.planes[0] = base;
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img.stride[0] = stride;
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struct mp_image *image = mp_image_new_copy(&img);
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CVPixelBufferUnlockBaseAddress(pbuf, 0);
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return image;
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}
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static void destroy(struct gl_hwdec *hw)
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{
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struct priv *p = hw->priv;
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GL *gl = hw->mpgl->gl;
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CVPixelBufferRelease(p->pbuf);
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gl->DeleteTextures(1, &p->gl_texture);
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p->gl_texture = 0;
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}
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const struct gl_hwdec_driver gl_hwdec_vda = {
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.api_name = "vda",
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.imgfmt = IMGFMT_VDA,
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.create = create,
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.reinit = reinit,
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.map_image = map_image,
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.unmap_image = unmap_image,
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.download_image = download_image,
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.destroy = destroy,
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};
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