mirror of https://github.com/mpv-player/mpv
86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
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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
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <unistd.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include "common/msg.h"
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#include "drm_common.h"
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#include "drm_prime.h"
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int drm_prime_create_framebuffer(struct mp_log *log, int fd, AVDRMFrameDescriptor *descriptor, int width, int height,
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struct drm_prime_framebuffer *framebuffer)
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{
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AVDRMLayerDescriptor *layer = NULL;
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uint32_t pitches[4], offsets[4], handles[4];
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int ret, layer_fd;
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if (descriptor && descriptor->nb_layers) {
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*framebuffer = (struct drm_prime_framebuffer){0};
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for (int object = 0; object < descriptor->nb_objects; object++) {
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ret = drmPrimeFDToHandle(fd, descriptor->objects[object].fd, &framebuffer->gem_handles[object]);
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if (ret < 0) {
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mp_err(log, "Failed to retrieve the Prime Handle from handle %d (%d).\n", object, descriptor->objects[object].fd);
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goto fail;
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}
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}
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layer = &descriptor->layers[0];
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for (int plane = 0; plane < AV_DRM_MAX_PLANES; plane++) {
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layer_fd = framebuffer->gem_handles[layer->planes[plane].object_index];
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if (layer_fd && layer->planes[plane].pitch) {
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pitches[plane] = layer->planes[plane].pitch;
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offsets[plane] = layer->planes[plane].offset;
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handles[plane] = layer_fd;
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} else {
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pitches[plane] = 0;
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offsets[plane] = 0;
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handles[plane] = 0;
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}
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}
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ret = drmModeAddFB2(fd, width, height, layer->format,
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handles, pitches, offsets, &framebuffer->fb_id, 0);
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if (ret < 0) {
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mp_err(log, "Failed to create framebuffer on layer %d.\n", 0);
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goto fail;
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}
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}
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return 0;
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fail:
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memset(framebuffer, 0, sizeof(*framebuffer));
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return -1;
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}
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void drm_prime_destroy_framebuffer(struct mp_log *log, int fd, struct drm_prime_framebuffer *framebuffer)
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{
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if (framebuffer->fb_id)
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drmModeRmFB(fd, framebuffer->fb_id);
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for (int i = 0; i < AV_DRM_MAX_PLANES; i++) {
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if (framebuffer->gem_handles[i])
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drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &framebuffer->gem_handles[i]);
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}
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memset(framebuffer, 0, sizeof(*framebuffer));
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}
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