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73a06ffae6
Variable Refresh Rate (VRR), aka Freesync or Adaptive Sync can be used with DRM by setting the VRR_ENABLED property on a crtc if the connector reports that it is VRR_CAPABLE. This is a useful feature for us as it is common to play 24/25/50 fps content on displays that are nominally locked to 60Hz. VRR can allow this content to play at native framerates. This is a simple change as we just need to check the capability and set the enabled property if requested by the user. I've defaulted it to disabled for now, but it might make sense to default to auto in the long term.
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/*
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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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#ifndef MP_DRMATOMIC_H
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#define MP_DRMATOMIC_H
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#include <stdlib.h>
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#include <stdbool.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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#define DRM_OPTS_PRIMARY_PLANE -1
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#define DRM_OPTS_OVERLAY_PLANE -2
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struct drm_mode {
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drmModeModeInfo mode;
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uint32_t blob_id;
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};
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struct drm_atomic_plane_state {
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uint64_t fb_id;
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uint64_t crtc_id;
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uint64_t src_x;
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uint64_t src_y;
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uint64_t src_w;
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uint64_t src_h;
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uint64_t crtc_x;
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uint64_t crtc_y;
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uint64_t crtc_w;
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uint64_t crtc_h;
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uint64_t zpos;
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};
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// Used to store the restore state for VT switching and uninit
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struct drm_atomic_state {
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bool saved;
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struct {
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uint64_t crtc_id;
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} connector;
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struct {
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struct drm_mode mode;
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uint64_t active;
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uint64_t vrr_enabled;
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} crtc;
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struct drm_atomic_plane_state draw_plane;
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struct drm_atomic_plane_state drmprime_video_plane;
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};
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struct drm_object {
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int fd;
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uint32_t id;
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uint32_t type;
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drmModeObjectProperties *props;
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drmModePropertyRes **props_info;
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};
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struct drm_atomic_context {
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int fd;
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struct drm_object *crtc;
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struct drm_object *connector;
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struct drm_object *draw_plane;
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struct drm_object *drmprime_video_plane;
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drmModeAtomicReq *request;
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struct drm_atomic_state old_state;
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};
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int drm_object_create_properties(struct mp_log *log, int fd, struct drm_object *object);
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void drm_object_free_properties(struct drm_object *object);
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int drm_object_get_property(struct drm_object *object, char *name, uint64_t *value);
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int drm_object_set_property(drmModeAtomicReq *request, struct drm_object *object, char *name, uint64_t value);
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drmModePropertyBlobPtr drm_object_get_property_blob(struct drm_object *object, char *name);
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struct drm_object * drm_object_create(struct mp_log *log, int fd, uint32_t object_id, uint32_t type);
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void drm_object_free(struct drm_object *object);
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void drm_object_print_info(struct mp_log *log, struct drm_object *object);
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struct drm_atomic_context *drm_atomic_create_context(struct mp_log *log, int fd, int crtc_id, int connector_id,
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int draw_plane_idx, int drmprime_video_plane_idx);
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void drm_atomic_destroy_context(struct drm_atomic_context *ctx);
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bool drm_atomic_save_old_state(struct drm_atomic_context *ctx);
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bool drm_atomic_restore_old_state(drmModeAtomicReq *request, struct drm_atomic_context *ctx);
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bool drm_mode_ensure_blob(int fd, struct drm_mode *mode);
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bool drm_mode_destroy_blob(int fd, struct drm_mode *mode);
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#endif // MP_DRMATOMIC_H
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