mirror of
https://github.com/mpv-player/mpv
synced 2024-12-29 10:32:15 +00:00
cfcee4cfe7
This commit allows to use the AV_PIX_FMT_DRM_PRIME newly introduced format in ffmpeg that allows decoders to provide an AVDRMFrameDescriptor struct. That struct holds dmabuf fds and information allowing zerocopy rendering using KMS / DRM Atomic. This has been tested on RockChip ROCK64 device.
86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/*
|
|
* 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 <unistd.h>
|
|
#include <xf86drm.h>
|
|
#include <xf86drmMode.h>
|
|
|
|
#include "common/msg.h"
|
|
#include "drm_common.h"
|
|
#include "drm_prime.h"
|
|
|
|
int drm_prime_create_framebuffer(struct mp_log *log, int fd, AVDRMFrameDescriptor *descriptor, int width, int height,
|
|
struct drm_prime_framebuffer *framebuffer)
|
|
{
|
|
AVDRMLayerDescriptor *layer = NULL;
|
|
uint32_t pitches[4], offsets[4], handles[4];
|
|
int ret, layer_fd;
|
|
|
|
if (descriptor && descriptor->nb_layers) {
|
|
*framebuffer = (struct drm_prime_framebuffer){0};
|
|
|
|
for (int object = 0; object < descriptor->nb_objects; object++) {
|
|
ret = drmPrimeFDToHandle(fd, descriptor->objects[object].fd, &framebuffer->gem_handles[object]);
|
|
if (ret < 0) {
|
|
mp_err(log, "Failed to retrieve the Prime Handle from handle %d (%d).\n", object, descriptor->objects[object].fd);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
layer = &descriptor->layers[0];
|
|
|
|
for (int plane = 0; plane < AV_DRM_MAX_PLANES; plane++) {
|
|
layer_fd = framebuffer->gem_handles[layer->planes[plane].object_index];
|
|
if (layer_fd && layer->planes[plane].pitch) {
|
|
pitches[plane] = layer->planes[plane].pitch;
|
|
offsets[plane] = layer->planes[plane].offset;
|
|
handles[plane] = layer_fd;
|
|
} else {
|
|
pitches[plane] = 0;
|
|
offsets[plane] = 0;
|
|
handles[plane] = 0;
|
|
}
|
|
}
|
|
|
|
ret = drmModeAddFB2(fd, width, height, layer->format,
|
|
handles, pitches, offsets, &framebuffer->fb_id, 0);
|
|
if (ret < 0) {
|
|
mp_err(log, "Failed to create framebuffer on layer %d.\n", 0);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
memset(framebuffer, 0, sizeof(*framebuffer));
|
|
return -1;
|
|
}
|
|
|
|
void drm_prime_destroy_framebuffer(struct mp_log *log, int fd, struct drm_prime_framebuffer *framebuffer)
|
|
{
|
|
if (framebuffer->fb_id)
|
|
drmModeRmFB(fd, framebuffer->fb_id);
|
|
|
|
for (int i = 0; i < AV_DRM_MAX_PLANES; i++) {
|
|
if (framebuffer->gem_handles[i])
|
|
drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &framebuffer->gem_handles[i]);
|
|
}
|
|
|
|
memset(framebuffer, 0, sizeof(*framebuffer));
|
|
}
|