mirror of
https://github.com/mpv-player/mpv
synced 2024-12-29 10:32:15 +00:00
b2b15d4e6e
drmModeAddFB is legacy, and might not pick the pixel format you expect, depending on your driver. Use drmModeAddFB2 which specifies this explicitly using a fourcc.
690 lines
19 KiB
C
690 lines
19 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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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <sys/mman.h>
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#include <poll.h>
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#include <unistd.h>
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#include <drm_fourcc.h>
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#include <libswscale/swscale.h>
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#include "drm_common.h"
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#include "common/msg.h"
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#include "osdep/timer.h"
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#include "sub/osd.h"
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#include "video/fmt-conversion.h"
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#include "video/mp_image.h"
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#include "video/sws_utils.h"
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#include "vo.h"
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#define IMGFMT_XRGB8888 IMGFMT_BGR0
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#if BYTE_ORDER == BIG_ENDIAN
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#define IMGFMT_XRGB2101010 pixfmt2imgfmt(AV_PIX_FMT_GBRP10BE)
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#else
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#define IMGFMT_XRGB2101010 pixfmt2imgfmt(AV_PIX_FMT_GBRP10LE)
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#endif
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#define BYTES_PER_PIXEL 4
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#define BITS_PER_PIXEL 32
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#define USE_MASTER 0
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struct framebuffer {
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uint32_t width;
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uint32_t height;
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uint32_t stride;
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uint32_t size;
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uint32_t handle;
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uint8_t *map;
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uint32_t fb;
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};
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struct kms_frame {
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struct framebuffer *fb;
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struct drm_vsync_tuple vsync;
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};
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struct priv {
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char *connector_spec;
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int mode_id;
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struct kms *kms;
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drmModeCrtc *old_crtc;
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drmEventContext ev;
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bool vt_switcher_active;
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struct vt_switcher vt_switcher;
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int swapchain_depth;
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unsigned int buf_count;
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struct framebuffer *bufs;
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int front_buf;
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bool active;
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bool waiting_for_flip;
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bool still;
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bool paused;
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struct kms_frame **fb_queue;
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unsigned int fb_queue_len;
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struct framebuffer *cur_fb;
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uint32_t drm_format;
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enum mp_imgfmt imgfmt;
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int32_t screen_w;
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int32_t screen_h;
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struct mp_image *last_input;
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struct mp_image *cur_frame;
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struct mp_image *cur_frame_cropped;
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struct mp_rect src;
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struct mp_rect dst;
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struct mp_osd_res osd;
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struct mp_sws_context *sws;
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struct drm_vsync_tuple vsync;
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struct vo_vsync_info vsync_info;
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};
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static void fb_destroy(int fd, struct framebuffer *buf)
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{
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if (buf->map) {
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munmap(buf->map, buf->size);
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}
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if (buf->fb) {
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drmModeRmFB(fd, buf->fb);
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}
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if (buf->handle) {
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struct drm_mode_destroy_dumb dreq = {
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.handle = buf->handle,
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};
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drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &dreq);
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}
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}
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static bool fb_setup_single(struct vo *vo, int fd, struct framebuffer *buf)
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{
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struct priv *p = vo->priv;
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buf->handle = 0;
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// create dumb buffer
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struct drm_mode_create_dumb creq = {
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.width = buf->width,
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.height = buf->height,
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.bpp = BITS_PER_PIXEL,
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};
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if (drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &creq) < 0) {
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MP_ERR(vo, "Cannot create dumb buffer: %s\n", mp_strerror(errno));
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goto err;
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}
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buf->stride = creq.pitch;
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buf->size = creq.size;
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buf->handle = creq.handle;
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// create framebuffer object for the dumb-buffer
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int ret = drmModeAddFB2(fd, buf->width, buf->height,
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p->drm_format,
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(uint32_t[4]){buf->handle, 0, 0, 0},
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(uint32_t[4]){buf->stride, 0, 0, 0},
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(uint32_t[4]){0, 0, 0, 0},
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&buf->fb, 0);
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if (ret) {
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MP_ERR(vo, "Cannot create framebuffer: %s\n", mp_strerror(errno));
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goto err;
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}
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// prepare buffer for memory mapping
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struct drm_mode_map_dumb mreq = {
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.handle = buf->handle,
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};
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if (drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &mreq)) {
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MP_ERR(vo, "Cannot map dumb buffer: %s\n", mp_strerror(errno));
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goto err;
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}
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// perform actual memory mapping
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buf->map = mmap(0, buf->size, PROT_READ | PROT_WRITE, MAP_SHARED,
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fd, mreq.offset);
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if (buf->map == MAP_FAILED) {
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MP_ERR(vo, "Cannot map dumb buffer: %s\n", mp_strerror(errno));
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goto err;
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}
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memset(buf->map, 0, buf->size);
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return true;
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err:
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fb_destroy(fd, buf);
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return false;
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}
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static bool fb_setup_buffers(struct vo *vo)
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{
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struct priv *p = vo->priv;
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p->bufs = talloc_zero_array(p, struct framebuffer, p->buf_count);
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p->front_buf = 0;
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for (unsigned int i = 0; i < p->buf_count; i++) {
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p->bufs[i].width = p->kms->mode.mode.hdisplay;
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p->bufs[i].height = p->kms->mode.mode.vdisplay;
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}
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for (unsigned int i = 0; i < p->buf_count; i++) {
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if (!fb_setup_single(vo, p->kms->fd, &p->bufs[i])) {
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MP_ERR(vo, "Cannot create framebuffer\n");
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for (unsigned int j = 0; j < i; j++) {
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fb_destroy(p->kms->fd, &p->bufs[j]);
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}
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return false;
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}
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}
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p->cur_fb = &p->bufs[0];
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return true;
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}
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static void get_vsync(struct vo *vo, struct vo_vsync_info *info)
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{
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struct priv *p = vo->priv;
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*info = p->vsync_info;
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}
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static bool crtc_setup(struct vo *vo)
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{
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struct priv *p = vo->priv;
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if (p->active)
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return true;
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p->old_crtc = drmModeGetCrtc(p->kms->fd, p->kms->crtc_id);
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int ret = drmModeSetCrtc(p->kms->fd, p->kms->crtc_id,
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p->cur_fb->fb,
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0, 0, &p->kms->connector->connector_id, 1,
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&p->kms->mode.mode);
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p->active = true;
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return ret == 0;
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}
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static void crtc_release(struct vo *vo)
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{
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struct priv *p = vo->priv;
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if (!p->active)
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return;
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p->active = false;
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// wait for current page flip
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while (p->waiting_for_flip) {
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int ret = drmHandleEvent(p->kms->fd, &p->ev);
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if (ret) {
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MP_ERR(vo, "drmHandleEvent failed: %i\n", ret);
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break;
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}
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}
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if (p->old_crtc) {
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drmModeSetCrtc(p->kms->fd, p->old_crtc->crtc_id,
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p->old_crtc->buffer_id,
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p->old_crtc->x, p->old_crtc->y,
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&p->kms->connector->connector_id, 1,
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&p->old_crtc->mode);
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drmModeFreeCrtc(p->old_crtc);
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p->old_crtc = NULL;
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}
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}
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static void release_vt(void *data)
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{
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struct vo *vo = data;
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crtc_release(vo);
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if (USE_MASTER) {
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//this function enables support for switching to x, weston etc.
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//however, for whatever reason, it can be called only by root users.
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//until things change, this is commented.
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struct priv *p = vo->priv;
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if (drmDropMaster(p->kms->fd)) {
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MP_WARN(vo, "Failed to drop DRM master: %s\n", mp_strerror(errno));
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}
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}
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}
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static void acquire_vt(void *data)
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{
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struct vo *vo = data;
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if (USE_MASTER) {
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struct priv *p = vo->priv;
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if (drmSetMaster(p->kms->fd)) {
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MP_WARN(vo, "Failed to acquire DRM master: %s\n", mp_strerror(errno));
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}
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}
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crtc_setup(vo);
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}
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static void wait_events(struct vo *vo, int64_t until_time_us)
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{
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struct priv *p = vo->priv;
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if (p->vt_switcher_active) {
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int64_t wait_us = until_time_us - mp_time_us();
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int timeout_ms = MPCLAMP((wait_us + 500) / 1000, 0, 10000);
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vt_switcher_poll(&p->vt_switcher, timeout_ms);
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} else {
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vo_wait_default(vo, until_time_us);
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}
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}
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static void wakeup(struct vo *vo)
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{
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struct priv *p = vo->priv;
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if (p->vt_switcher_active)
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vt_switcher_interrupt_poll(&p->vt_switcher);
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}
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static int reconfig(struct vo *vo, struct mp_image_params *params)
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{
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struct priv *p = vo->priv;
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vo->dwidth = p->screen_w;
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vo->dheight = p->screen_h;
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vo_get_src_dst_rects(vo, &p->src, &p->dst, &p->osd);
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int w = p->dst.x1 - p->dst.x0;
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int h = p->dst.y1 - p->dst.y0;
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p->sws->src = *params;
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p->sws->dst = (struct mp_image_params) {
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.imgfmt = p->imgfmt,
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.w = w,
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.h = h,
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.p_w = 1,
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.p_h = 1,
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};
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talloc_free(p->cur_frame);
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p->cur_frame = mp_image_alloc(p->imgfmt, p->screen_w, p->screen_h);
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mp_image_params_guess_csp(&p->sws->dst);
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mp_image_set_params(p->cur_frame, &p->sws->dst);
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p->cur_frame[0].w = p->screen_w;
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p->cur_frame[0].h = p->screen_h;
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talloc_free(p->cur_frame_cropped);
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p->cur_frame_cropped = mp_image_new_dummy_ref(p->cur_frame);
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mp_image_crop_rc(p->cur_frame_cropped, p->dst);
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talloc_free(p->last_input);
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p->last_input = NULL;
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if (mp_sws_reinit(p->sws) < 0)
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return -1;
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p->vsync_info.vsync_duration = 0;
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p->vsync_info.skipped_vsyncs = -1;
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p->vsync_info.last_queue_display_time = -1;
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vo->want_redraw = true;
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return 0;
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}
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static void wait_on_flip(struct vo *vo)
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{
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struct priv *p = vo->priv;
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// poll page flip finish event
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while (p->waiting_for_flip) {
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const int timeout_ms = 3000;
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struct pollfd fds[1] = { { .events = POLLIN, .fd = p->kms->fd } };
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poll(fds, 1, timeout_ms);
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if (fds[0].revents & POLLIN) {
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const int ret = drmHandleEvent(p->kms->fd, &p->ev);
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if (ret != 0) {
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MP_ERR(vo, "drmHandleEvent failed: %i\n", ret);
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return;
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}
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}
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}
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}
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static struct framebuffer *get_new_fb(struct vo *vo)
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{
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struct priv *p = vo->priv;
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p->front_buf++;
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p->front_buf %= p->buf_count;
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return &p->bufs[p->front_buf];
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}
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static void draw_image(struct vo *vo, mp_image_t *mpi, struct framebuffer *front_buf)
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{
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struct priv *p = vo->priv;
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if (p->active && front_buf != NULL) {
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if (mpi) {
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struct mp_image src = *mpi;
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struct mp_rect src_rc = p->src;
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src_rc.x0 = MP_ALIGN_DOWN(src_rc.x0, mpi->fmt.align_x);
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src_rc.y0 = MP_ALIGN_DOWN(src_rc.y0, mpi->fmt.align_y);
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mp_image_crop_rc(&src, src_rc);
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mp_image_clear(p->cur_frame, 0, 0, p->cur_frame->w, p->dst.y0);
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mp_image_clear(p->cur_frame, 0, p->dst.y1, p->cur_frame->w, p->cur_frame->h);
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mp_image_clear(p->cur_frame, 0, p->dst.y0, p->dst.x0, p->dst.y1);
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mp_image_clear(p->cur_frame, p->dst.x1, p->dst.y0, p->cur_frame->w, p->dst.y1);
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mp_sws_scale(p->sws, p->cur_frame_cropped, &src);
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osd_draw_on_image(vo->osd, p->osd, src.pts, 0, p->cur_frame);
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} else {
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mp_image_clear(p->cur_frame, 0, 0, p->cur_frame->w, p->cur_frame->h);
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osd_draw_on_image(vo->osd, p->osd, 0, 0, p->cur_frame);
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}
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if (p->drm_format == DRM_FORMAT_XRGB2101010) {
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// Pack GBRP10 image into XRGB2101010 for DRM
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const int w = p->cur_frame->w;
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const int h = p->cur_frame->h;
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const int g_padding = p->cur_frame->stride[0]/sizeof(uint16_t) - w;
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const int b_padding = p->cur_frame->stride[1]/sizeof(uint16_t) - w;
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const int r_padding = p->cur_frame->stride[2]/sizeof(uint16_t) - w;
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const int fbuf_padding = front_buf->stride/sizeof(uint32_t) - w;
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uint16_t *g_ptr = (uint16_t*)p->cur_frame->planes[0];
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uint16_t *b_ptr = (uint16_t*)p->cur_frame->planes[1];
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uint16_t *r_ptr = (uint16_t*)p->cur_frame->planes[2];
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uint32_t *fbuf_ptr = (uint32_t*)front_buf->map;
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for (unsigned y = 0; y < h; ++y) {
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for (unsigned x = 0; x < w; ++x) {
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*fbuf_ptr++ = (*r_ptr++ << 20) | (*g_ptr++ << 10) | (*b_ptr++);
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}
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g_ptr += g_padding;
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b_ptr += b_padding;
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r_ptr += r_padding;
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fbuf_ptr += fbuf_padding;
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}
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} else { // p->drm_format == DRM_FORMAT_XRGB8888
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memcpy_pic(front_buf->map, p->cur_frame->planes[0],
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p->cur_frame->w * BYTES_PER_PIXEL, p->cur_frame->h,
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front_buf->stride,
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p->cur_frame->stride[0]);
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}
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}
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if (mpi != p->last_input) {
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talloc_free(p->last_input);
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p->last_input = mpi;
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}
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}
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static void enqueue_frame(struct vo *vo, struct framebuffer *fb)
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{
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struct priv *p = vo->priv;
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p->vsync.sbc++;
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struct kms_frame *new_frame = talloc(p, struct kms_frame);
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new_frame->fb = fb;
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new_frame->vsync = p->vsync;
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MP_TARRAY_APPEND(p, p->fb_queue, p->fb_queue_len, new_frame);
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}
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static void dequeue_frame(struct vo *vo)
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{
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struct priv *p = vo->priv;
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talloc_free(p->fb_queue[0]);
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MP_TARRAY_REMOVE_AT(p->fb_queue, p->fb_queue_len, 0);
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}
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static void swapchain_step(struct vo *vo)
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{
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struct priv *p = vo->priv;
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if (p->fb_queue_len > 0) {
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dequeue_frame(vo);
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}
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}
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static void draw_frame(struct vo *vo, struct vo_frame *frame)
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{
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struct priv *p = vo->priv;
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if (!p->active)
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return;
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p->still = frame->still;
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// we redraw the entire image when OSD needs to be redrawn
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const bool repeat = frame->repeat && !frame->redraw;
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struct framebuffer *fb = &p->bufs[p->front_buf];
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if (!repeat) {
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fb = get_new_fb(vo);
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draw_image(vo, mp_image_new_ref(frame->current), fb);
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}
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enqueue_frame(vo, fb);
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}
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static void queue_flip(struct vo *vo, struct kms_frame *frame)
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{
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int ret = 0;
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struct priv *p = vo->priv;
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p->cur_fb = frame->fb;
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|
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// Alloc and fill the data struct for the page flip callback
|
|
struct drm_pflip_cb_closure *data = talloc(p, struct drm_pflip_cb_closure);
|
|
data->frame_vsync = &frame->vsync;
|
|
data->vsync = &p->vsync;
|
|
data->vsync_info = &p->vsync_info;
|
|
data->waiting_for_flip = &p->waiting_for_flip;
|
|
data->log = vo->log;
|
|
|
|
ret = drmModePageFlip(p->kms->fd, p->kms->crtc_id,
|
|
p->cur_fb->fb,
|
|
DRM_MODE_PAGE_FLIP_EVENT, data);
|
|
if (ret) {
|
|
MP_WARN(vo, "Failed to queue page flip: %s\n", mp_strerror(errno));
|
|
} else {
|
|
p->waiting_for_flip = true;
|
|
}
|
|
}
|
|
|
|
static void flip_page(struct vo *vo)
|
|
{
|
|
struct priv *p = vo->priv;
|
|
const bool drain = p->paused || p->still;
|
|
|
|
if (!p->active)
|
|
return;
|
|
|
|
while (drain || p->fb_queue_len > p->swapchain_depth) {
|
|
if (p->waiting_for_flip) {
|
|
wait_on_flip(vo);
|
|
swapchain_step(vo);
|
|
}
|
|
if (p->fb_queue_len <= 1)
|
|
break;
|
|
if (!p->fb_queue[1] || !p->fb_queue[1]->fb) {
|
|
MP_ERR(vo, "Hole in swapchain?\n");
|
|
swapchain_step(vo);
|
|
continue;
|
|
}
|
|
queue_flip(vo, p->fb_queue[1]);
|
|
}
|
|
}
|
|
|
|
static void uninit(struct vo *vo)
|
|
{
|
|
struct priv *p = vo->priv;
|
|
|
|
crtc_release(vo);
|
|
|
|
while (p->fb_queue_len > 0) {
|
|
swapchain_step(vo);
|
|
}
|
|
|
|
if (p->kms) {
|
|
for (unsigned int i = 0; i < p->buf_count; i++)
|
|
fb_destroy(p->kms->fd, &p->bufs[i]);
|
|
kms_destroy(p->kms);
|
|
p->kms = NULL;
|
|
}
|
|
|
|
if (p->vt_switcher_active)
|
|
vt_switcher_destroy(&p->vt_switcher);
|
|
|
|
talloc_free(p->last_input);
|
|
talloc_free(p->cur_frame);
|
|
talloc_free(p->cur_frame_cropped);
|
|
}
|
|
|
|
static int preinit(struct vo *vo)
|
|
{
|
|
struct priv *p = vo->priv;
|
|
p->sws = mp_sws_alloc(vo);
|
|
p->sws->log = vo->log;
|
|
mp_sws_enable_cmdline_opts(p->sws, vo->global);
|
|
p->ev.version = DRM_EVENT_CONTEXT_VERSION;
|
|
p->ev.page_flip_handler = &drm_pflip_cb;
|
|
|
|
p->vt_switcher_active = vt_switcher_init(&p->vt_switcher, vo->log);
|
|
if (p->vt_switcher_active) {
|
|
vt_switcher_acquire(&p->vt_switcher, acquire_vt, vo);
|
|
vt_switcher_release(&p->vt_switcher, release_vt, vo);
|
|
} else {
|
|
MP_WARN(vo, "Failed to set up VT switcher. Terminal switching will be unavailable.\n");
|
|
}
|
|
|
|
p->kms = kms_create(vo->log,
|
|
vo->opts->drm_opts->drm_connector_spec,
|
|
vo->opts->drm_opts->drm_mode_spec,
|
|
0, 0, false);
|
|
if (!p->kms) {
|
|
MP_ERR(vo, "Failed to create KMS.\n");
|
|
goto err;
|
|
}
|
|
|
|
if (vo->opts->drm_opts->drm_format == DRM_OPTS_FORMAT_XRGB2101010) {
|
|
p->drm_format = DRM_FORMAT_XRGB2101010;
|
|
p->imgfmt = IMGFMT_XRGB2101010;
|
|
} else {
|
|
p->drm_format = DRM_FORMAT_XRGB8888;;
|
|
p->imgfmt = IMGFMT_XRGB8888;
|
|
}
|
|
|
|
p->swapchain_depth = vo->opts->swapchain_depth;
|
|
p->buf_count = p->swapchain_depth + 1;
|
|
if (!fb_setup_buffers(vo)) {
|
|
MP_ERR(vo, "Failed to set up buffers.\n");
|
|
goto err;
|
|
}
|
|
|
|
uint64_t has_dumb = 0;
|
|
if (drmGetCap(p->kms->fd, DRM_CAP_DUMB_BUFFER, &has_dumb) < 0
|
|
|| has_dumb == 0) {
|
|
MP_ERR(vo, "Card \"%d\" does not support dumb buffers.\n",
|
|
p->kms->card_no);
|
|
goto err;
|
|
}
|
|
|
|
p->screen_w = p->bufs[0].width;
|
|
p->screen_h = p->bufs[0].height;
|
|
|
|
if (!crtc_setup(vo)) {
|
|
MP_ERR(vo, "Cannot set CRTC: %s\n", mp_strerror(errno));
|
|
goto err;
|
|
}
|
|
|
|
if (vo->opts->force_monitor_aspect != 0.0) {
|
|
vo->monitor_par = p->screen_w / (double) p->screen_h /
|
|
vo->opts->force_monitor_aspect;
|
|
} else {
|
|
vo->monitor_par = 1 / vo->opts->monitor_pixel_aspect;
|
|
}
|
|
mp_verbose(vo->log, "Monitor pixel aspect: %g\n", vo->monitor_par);
|
|
|
|
p->vsync_info.vsync_duration = 0;
|
|
p->vsync_info.skipped_vsyncs = -1;
|
|
p->vsync_info.last_queue_display_time = -1;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
uninit(vo);
|
|
return -1;
|
|
}
|
|
|
|
static int query_format(struct vo *vo, int format)
|
|
{
|
|
return sws_isSupportedInput(imgfmt2pixfmt(format));
|
|
}
|
|
|
|
static int control(struct vo *vo, uint32_t request, void *arg)
|
|
{
|
|
struct priv *p = vo->priv;
|
|
switch (request) {
|
|
case VOCTRL_SCREENSHOT_WIN:
|
|
*(struct mp_image**)arg = mp_image_new_copy(p->cur_frame);
|
|
return VO_TRUE;
|
|
case VOCTRL_SET_PANSCAN:
|
|
if (vo->config_ok)
|
|
reconfig(vo, vo->params);
|
|
return VO_TRUE;
|
|
case VOCTRL_GET_DISPLAY_FPS: {
|
|
double fps = kms_get_display_fps(p->kms);
|
|
if (fps <= 0)
|
|
break;
|
|
*(double*)arg = fps;
|
|
return VO_TRUE;
|
|
}
|
|
case VOCTRL_PAUSE:
|
|
vo->want_redraw = true;
|
|
p->paused = true;
|
|
return VO_TRUE;
|
|
case VOCTRL_RESUME:
|
|
p->paused = false;
|
|
p->vsync_info.last_queue_display_time = -1;
|
|
p->vsync_info.skipped_vsyncs = 0;
|
|
p->vsync.ust = 0;
|
|
p->vsync.msc = 0;
|
|
return VO_TRUE;
|
|
}
|
|
return VO_NOTIMPL;
|
|
}
|
|
|
|
#define OPT_BASE_STRUCT struct priv
|
|
|
|
const struct vo_driver video_out_drm = {
|
|
.name = "drm",
|
|
.description = "Direct Rendering Manager",
|
|
.preinit = preinit,
|
|
.query_format = query_format,
|
|
.reconfig = reconfig,
|
|
.control = control,
|
|
.draw_frame = draw_frame,
|
|
.flip_page = flip_page,
|
|
.get_vsync = get_vsync,
|
|
.uninit = uninit,
|
|
.wait_events = wait_events,
|
|
.wakeup = wakeup,
|
|
.priv_size = sizeof(struct priv),
|
|
};
|