diff options
author | Lionel CHAZALLON <LongChair@hotmail.com> | 2017-10-23 08:51:49 -0700 |
---|---|---|
committer | wm4 <wm4@nowhere> | 2017-10-23 21:07:24 +0200 |
commit | cfcee4cfe70536faeb9f2aaa87257d067e902b70 (patch) | |
tree | b6dfc61144a7394974657b5dfdfc34d9fcf1576a /video/out/drm_prime.c | |
parent | 762b8cc30007480f06d338ac77d6e91cc04cd320 (diff) | |
download | mpv-cfcee4cfe70536faeb9f2aaa87257d067e902b70.tar.bz2 mpv-cfcee4cfe70536faeb9f2aaa87257d067e902b70.tar.xz |
Add DRM_PRIME Format Handling and Display for RockChip MPP decoders
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.
Diffstat (limited to 'video/out/drm_prime.c')
-rw-r--r-- | video/out/drm_prime.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/video/out/drm_prime.c b/video/out/drm_prime.c new file mode 100644 index 0000000000..253fbb6c40 --- /dev/null +++ b/video/out/drm_prime.c @@ -0,0 +1,85 @@ +/* + * 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)); +} |