1 /* GStreamer
2 *
3 * Copyright (C) 2016 Igalia
4 *
5 * Authors:
6 * Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
7 * Javier Martin <javiermartin@by.com.es>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
23 *
24 */
25
26 /**
27 * SECTION:element-kmssink
28 * @title: kmssink
29 * @short_description: A KMS/DRM based video sink
30 *
31 * kmssink is a simple video sink that renders video frames directly
32 * in a plane of a DRM device.
33 *
34 * In advance usage, the behaviour of kmssink can be change using the
35 * supported properties. Note that plane and connectors IDs and properties can
36 * be enumerated using the modetest command line tool.
37 *
38 * ## Example launch line
39 * |[
40 * gst-launch-1.0 videotestsrc ! kmssink
41 * gst-launch-1.0 videotestsrc ! kmssink plane-properties=s,rotation=4
42 * ]|
43 *
44 */
45
46 #ifdef HAVE_CONFIG_H
47 #include "config.h"
48 #endif
49
50 #include <gst/video/video.h>
51 #include <gst/video/videooverlay.h>
52 #include <gst/allocators/gstdmabuf.h>
53
54 #include <drm.h>
55 #include <xf86drm.h>
56 #include <xf86drmMode.h>
57 #include <drm_fourcc.h>
58 #include <string.h>
59
60 #include <string.h>
61
62 #include "gstkmssink.h"
63 #include "gstkmsutils.h"
64 #include "gstkmsbufferpool.h"
65 #include "gstkmsallocator.h"
66
67 #define GST_PLUGIN_NAME "kmssink"
68 #define GST_PLUGIN_DESC "Video sink using the Linux kernel mode setting API"
69
70 GST_DEBUG_CATEGORY_STATIC (gst_kms_sink_debug);
71 GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE);
72 #define GST_CAT_DEFAULT gst_kms_sink_debug
73
74 static GstFlowReturn gst_kms_sink_show_frame (GstVideoSink * vsink,
75 GstBuffer * buf);
76 static void gst_kms_sink_video_overlay_init (GstVideoOverlayInterface * iface);
77 static void gst_kms_sink_drain (GstKMSSink * self);
78
79 #define parent_class gst_kms_sink_parent_class
80 G_DEFINE_TYPE_WITH_CODE (GstKMSSink, gst_kms_sink, GST_TYPE_VIDEO_SINK,
81 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, GST_PLUGIN_NAME, 0,
82 GST_PLUGIN_DESC);
83 GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE");
84 G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
85 gst_kms_sink_video_overlay_init));
86
87 enum
88 {
89 PROP_DRIVER_NAME = 1,
90 PROP_BUS_ID,
91 PROP_CONNECTOR_ID,
92 PROP_PLANE_ID,
93 PROP_FORCE_MODESETTING,
94 PROP_RESTORE_CRTC,
95 PROP_CAN_SCALE,
96 PROP_DISPLAY_WIDTH,
97 PROP_DISPLAY_HEIGHT,
98 PROP_CONNECTOR_PROPS,
99 PROP_PLANE_PROPS,
100 PROP_N,
101 };
102
103 static GParamSpec *g_properties[PROP_N] = { NULL, };
104
105 static void
gst_kms_sink_set_render_rectangle(GstVideoOverlay * overlay,gint x,gint y,gint width,gint height)106 gst_kms_sink_set_render_rectangle (GstVideoOverlay * overlay,
107 gint x, gint y, gint width, gint height)
108 {
109 GstKMSSink *self = GST_KMS_SINK (overlay);
110
111 GST_DEBUG_OBJECT (self, "Setting render rectangle to (%d,%d) %dx%d", x, y,
112 width, height);
113
114 GST_OBJECT_LOCK (self);
115
116 if (width == -1 && height == -1) {
117 x = 0;
118 y = 0;
119 width = self->hdisplay;
120 height = self->vdisplay;
121 }
122
123 if (width <= 0 || height <= 0)
124 goto done;
125
126 self->pending_rect.x = x;
127 self->pending_rect.y = y;
128 self->pending_rect.w = width;
129 self->pending_rect.h = height;
130
131 if (self->can_scale ||
132 (self->render_rect.w == width && self->render_rect.h == height)) {
133 self->render_rect = self->pending_rect;
134 } else {
135 self->reconfigure = TRUE;
136 GST_DEBUG_OBJECT (self, "Waiting for new caps to apply render rectangle");
137 }
138
139 done:
140 GST_OBJECT_UNLOCK (self);
141 }
142
143 static void
gst_kms_sink_expose(GstVideoOverlay * overlay)144 gst_kms_sink_expose (GstVideoOverlay * overlay)
145 {
146 GstKMSSink *self = GST_KMS_SINK (overlay);
147
148 GST_DEBUG_OBJECT (overlay, "Expose called by application");
149
150 if (!self->can_scale) {
151 GST_OBJECT_LOCK (self);
152 if (self->reconfigure) {
153 GST_OBJECT_UNLOCK (self);
154 GST_DEBUG_OBJECT (overlay, "Sending a reconfigure event");
155 gst_pad_push_event (GST_BASE_SINK_PAD (self),
156 gst_event_new_reconfigure ());
157 } else {
158 GST_DEBUG_OBJECT (overlay, "Applying new render rectangle");
159 /* size of the rectangle does not change, only the (x,y) position changes */
160 self->render_rect = self->pending_rect;
161 GST_OBJECT_UNLOCK (self);
162 }
163 }
164
165 gst_kms_sink_show_frame (GST_VIDEO_SINK (self), NULL);
166 }
167
168 static void
gst_kms_sink_video_overlay_init(GstVideoOverlayInterface * iface)169 gst_kms_sink_video_overlay_init (GstVideoOverlayInterface * iface)
170 {
171 iface->expose = gst_kms_sink_expose;
172 iface->set_render_rectangle = gst_kms_sink_set_render_rectangle;
173 }
174
175 static int
kms_open(gchar ** driver)176 kms_open (gchar ** driver)
177 {
178 static const char *drivers[] = { "i915", "radeon", "nouveau", "vmwgfx",
179 "exynos", "amdgpu", "imx-drm", "rockchip", "atmel-hlcdc", "msm",
180 "xlnx", "vc4", "meson", "sun4i-drm", "mxsfb-drm",
181 "xilinx_drm", /* DEPRECATED. Replaced by xlnx */
182 };
183 int i, fd = -1;
184
185 for (i = 0; i < G_N_ELEMENTS (drivers); i++) {
186 fd = drmOpen (drivers[i], NULL);
187 if (fd >= 0) {
188 if (driver)
189 *driver = g_strdup (drivers[i]);
190 break;
191 }
192 }
193
194 return fd;
195 }
196
197 static drmModePlane *
find_plane_for_crtc(int fd,drmModeRes * res,drmModePlaneRes * pres,int crtc_id)198 find_plane_for_crtc (int fd, drmModeRes * res, drmModePlaneRes * pres,
199 int crtc_id)
200 {
201 drmModePlane *plane;
202 int i, pipe;
203
204 plane = NULL;
205 pipe = -1;
206 for (i = 0; i < res->count_crtcs; i++) {
207 if (crtc_id == res->crtcs[i]) {
208 pipe = i;
209 break;
210 }
211 }
212
213 if (pipe == -1)
214 return NULL;
215
216 for (i = 0; i < pres->count_planes; i++) {
217 plane = drmModeGetPlane (fd, pres->planes[i]);
218 if (plane->possible_crtcs & (1 << pipe))
219 return plane;
220 drmModeFreePlane (plane);
221 }
222
223 return NULL;
224 }
225
226 static drmModeCrtc *
find_crtc_for_connector(int fd,drmModeRes * res,drmModeConnector * conn,guint * pipe)227 find_crtc_for_connector (int fd, drmModeRes * res, drmModeConnector * conn,
228 guint * pipe)
229 {
230 int i;
231 int crtc_id;
232 drmModeEncoder *enc;
233 drmModeCrtc *crtc;
234 guint32 crtcs_for_connector = 0;
235
236 crtc_id = -1;
237 for (i = 0; i < res->count_encoders; i++) {
238 enc = drmModeGetEncoder (fd, res->encoders[i]);
239 if (enc) {
240 if (enc->encoder_id == conn->encoder_id) {
241 crtc_id = enc->crtc_id;
242 drmModeFreeEncoder (enc);
243 break;
244 }
245 drmModeFreeEncoder (enc);
246 }
247 }
248
249 /* If no active crtc was found, pick the first possible crtc */
250 if (crtc_id == -1) {
251 for (i = 0; i < conn->count_encoders; i++) {
252 enc = drmModeGetEncoder (fd, conn->encoders[i]);
253 crtcs_for_connector |= enc->possible_crtcs;
254 drmModeFreeEncoder (enc);
255 }
256
257 if (crtcs_for_connector != 0)
258 crtc_id = res->crtcs[ffs (crtcs_for_connector) - 1];
259 }
260
261 if (crtc_id == -1)
262 return NULL;
263
264 for (i = 0; i < res->count_crtcs; i++) {
265 crtc = drmModeGetCrtc (fd, res->crtcs[i]);
266 if (crtc) {
267 if (crtc_id == crtc->crtc_id) {
268 if (pipe)
269 *pipe = i;
270 return crtc;
271 }
272 drmModeFreeCrtc (crtc);
273 }
274 }
275
276 return NULL;
277 }
278
279 static gboolean
connector_is_used(int fd,drmModeRes * res,drmModeConnector * conn)280 connector_is_used (int fd, drmModeRes * res, drmModeConnector * conn)
281 {
282 gboolean result;
283 drmModeCrtc *crtc;
284
285 result = FALSE;
286 crtc = find_crtc_for_connector (fd, res, conn, NULL);
287 if (crtc) {
288 result = crtc->buffer_id != 0;
289 drmModeFreeCrtc (crtc);
290 }
291
292 return result;
293 }
294
295 static drmModeConnector *
find_used_connector_by_type(int fd,drmModeRes * res,int type)296 find_used_connector_by_type (int fd, drmModeRes * res, int type)
297 {
298 int i;
299 drmModeConnector *conn;
300
301 conn = NULL;
302 for (i = 0; i < res->count_connectors; i++) {
303 conn = drmModeGetConnector (fd, res->connectors[i]);
304 if (conn) {
305 if ((conn->connector_type == type) && connector_is_used (fd, res, conn))
306 return conn;
307 drmModeFreeConnector (conn);
308 }
309 }
310
311 return NULL;
312 }
313
314 static drmModeConnector *
find_first_used_connector(int fd,drmModeRes * res)315 find_first_used_connector (int fd, drmModeRes * res)
316 {
317 int i;
318 drmModeConnector *conn;
319
320 conn = NULL;
321 for (i = 0; i < res->count_connectors; i++) {
322 conn = drmModeGetConnector (fd, res->connectors[i]);
323 if (conn) {
324 if (connector_is_used (fd, res, conn))
325 return conn;
326 drmModeFreeConnector (conn);
327 }
328 }
329
330 return NULL;
331 }
332
333 static drmModeConnector *
find_main_monitor(int fd,drmModeRes * res)334 find_main_monitor (int fd, drmModeRes * res)
335 {
336 /* Find the LVDS and eDP connectors: those are the main screens. */
337 static const int priority[] = { DRM_MODE_CONNECTOR_LVDS,
338 DRM_MODE_CONNECTOR_eDP
339 };
340 int i;
341 drmModeConnector *conn;
342
343 conn = NULL;
344 for (i = 0; !conn && i < G_N_ELEMENTS (priority); i++)
345 conn = find_used_connector_by_type (fd, res, priority[i]);
346
347 /* if we didn't find a connector, grab the first one in use */
348 if (!conn)
349 conn = find_first_used_connector (fd, res);
350
351 /* if no connector is used, grab the first one */
352 if (!conn)
353 conn = drmModeGetConnector (fd, res->connectors[0]);
354
355 return conn;
356 }
357
358 static void
log_drm_version(GstKMSSink * self)359 log_drm_version (GstKMSSink * self)
360 {
361 #ifndef GST_DISABLE_GST_DEBUG
362 drmVersion *v;
363
364 v = drmGetVersion (self->fd);
365 if (v) {
366 GST_INFO_OBJECT (self, "DRM v%d.%d.%d [%s — %s — %s]", v->version_major,
367 v->version_minor, v->version_patchlevel, GST_STR_NULL (v->name),
368 GST_STR_NULL (v->desc), GST_STR_NULL (v->date));
369 drmFreeVersion (v);
370 } else {
371 GST_WARNING_OBJECT (self, "could not get driver information: %s",
372 GST_STR_NULL (self->devname));
373 }
374 #endif
375 return;
376 }
377
378 static gboolean
get_drm_caps(GstKMSSink * self)379 get_drm_caps (GstKMSSink * self)
380 {
381 gint ret;
382 guint64 has_dumb_buffer;
383 guint64 has_prime;
384 guint64 has_async_page_flip;
385
386 has_dumb_buffer = 0;
387 ret = drmGetCap (self->fd, DRM_CAP_DUMB_BUFFER, &has_dumb_buffer);
388 if (ret)
389 GST_WARNING_OBJECT (self, "could not get dumb buffer capability");
390 if (has_dumb_buffer == 0) {
391 GST_ERROR_OBJECT (self, "driver cannot handle dumb buffers");
392 return FALSE;
393 }
394
395 has_prime = 0;
396 ret = drmGetCap (self->fd, DRM_CAP_PRIME, &has_prime);
397 if (ret)
398 GST_WARNING_OBJECT (self, "could not get prime capability");
399 else {
400 self->has_prime_import = (gboolean) (has_prime & DRM_PRIME_CAP_IMPORT);
401 self->has_prime_export = (gboolean) (has_prime & DRM_PRIME_CAP_EXPORT);
402 }
403
404 has_async_page_flip = 0;
405 ret = drmGetCap (self->fd, DRM_CAP_ASYNC_PAGE_FLIP, &has_async_page_flip);
406 if (ret)
407 GST_WARNING_OBJECT (self, "could not get async page flip capability");
408 else
409 self->has_async_page_flip = (gboolean) has_async_page_flip;
410
411 GST_INFO_OBJECT (self,
412 "prime import (%s) / prime export (%s) / async page flip (%s)",
413 self->has_prime_import ? "✓" : "✗",
414 self->has_prime_export ? "✓" : "✗",
415 self->has_async_page_flip ? "✓" : "✗");
416
417 return TRUE;
418 }
419
420 static gboolean
configure_mode_setting(GstKMSSink * self,GstVideoInfo * vinfo)421 configure_mode_setting (GstKMSSink * self, GstVideoInfo * vinfo)
422 {
423 gboolean ret;
424 drmModeConnector *conn;
425 int err;
426 gint i;
427 drmModeModeInfo *mode;
428 guint32 fb_id;
429 GstKMSMemory *kmsmem;
430
431 ret = FALSE;
432 conn = NULL;
433 mode = NULL;
434 kmsmem = NULL;
435
436 if (self->conn_id < 0)
437 goto bail;
438
439 GST_INFO_OBJECT (self, "configuring mode setting");
440
441 kmsmem = (GstKMSMemory *) gst_kms_allocator_bo_alloc (self->allocator, vinfo);
442 if (!kmsmem)
443 goto bo_failed;
444 fb_id = kmsmem->fb_id;
445
446 conn = drmModeGetConnector (self->fd, self->conn_id);
447 if (!conn)
448 goto connector_failed;
449
450 for (i = 0; i < conn->count_modes; i++) {
451 if (conn->modes[i].vdisplay == GST_VIDEO_INFO_HEIGHT (vinfo) &&
452 conn->modes[i].hdisplay == GST_VIDEO_INFO_WIDTH (vinfo)) {
453 mode = &conn->modes[i];
454 break;
455 }
456 }
457 if (!mode)
458 goto mode_failed;
459
460 err = drmModeSetCrtc (self->fd, self->crtc_id, fb_id, 0, 0,
461 (uint32_t *) & self->conn_id, 1, mode);
462 if (err)
463 goto modesetting_failed;
464
465 g_clear_pointer (&self->tmp_kmsmem, gst_memory_unref);
466 self->tmp_kmsmem = (GstMemory *) kmsmem;
467
468 ret = TRUE;
469
470 bail:
471 if (conn)
472 drmModeFreeConnector (conn);
473
474 return ret;
475
476 /* ERRORS */
477 bo_failed:
478 {
479 GST_ERROR_OBJECT (self,
480 "failed to allocate buffer object for mode setting");
481 goto bail;
482 }
483 connector_failed:
484 {
485 GST_ERROR_OBJECT (self, "Could not find a valid monitor connector");
486 goto bail;
487 }
488 mode_failed:
489 {
490 GST_ERROR_OBJECT (self, "cannot find appropriate mode");
491 goto bail;
492 }
493 modesetting_failed:
494 {
495 GST_ERROR_OBJECT (self, "Failed to set mode: %s", strerror (errno));
496 goto bail;
497 }
498 }
499
500 static gboolean
ensure_allowed_caps(GstKMSSink * self,drmModeConnector * conn,drmModePlane * plane,drmModeRes * res)501 ensure_allowed_caps (GstKMSSink * self, drmModeConnector * conn,
502 drmModePlane * plane, drmModeRes * res)
503 {
504 GstCaps *out_caps, *tmp_caps, *caps;
505 int i, j;
506 GstVideoFormat fmt;
507 const gchar *format;
508 drmModeModeInfo *mode;
509 gint count_modes;
510
511 if (self->allowed_caps)
512 return TRUE;
513
514 out_caps = gst_caps_new_empty ();
515 if (!out_caps)
516 return FALSE;
517
518 if (conn && self->modesetting_enabled)
519 count_modes = conn->count_modes;
520 else
521 count_modes = 1;
522
523 for (i = 0; i < count_modes; i++) {
524 tmp_caps = gst_caps_new_empty ();
525 if (!tmp_caps)
526 return FALSE;
527
528 mode = NULL;
529 if (conn && self->modesetting_enabled)
530 mode = &conn->modes[i];
531
532 for (j = 0; j < plane->count_formats; j++) {
533 fmt = gst_video_format_from_drm (plane->formats[j]);
534 if (fmt == GST_VIDEO_FORMAT_UNKNOWN) {
535 GST_INFO_OBJECT (self, "ignoring format %" GST_FOURCC_FORMAT,
536 GST_FOURCC_ARGS (plane->formats[j]));
537 continue;
538 }
539
540 format = gst_video_format_to_string (fmt);
541
542 if (mode) {
543 caps = gst_caps_new_simple ("video/x-raw",
544 "format", G_TYPE_STRING, format,
545 "width", G_TYPE_INT, mode->hdisplay,
546 "height", G_TYPE_INT, mode->vdisplay,
547 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
548 } else {
549 caps = gst_caps_new_simple ("video/x-raw",
550 "format", G_TYPE_STRING, format,
551 "width", GST_TYPE_INT_RANGE, res->min_width, res->max_width,
552 "height", GST_TYPE_INT_RANGE, res->min_height, res->max_height,
553 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
554 }
555 if (!caps)
556 continue;
557
558 tmp_caps = gst_caps_merge (tmp_caps, caps);
559 }
560
561 out_caps = gst_caps_merge (out_caps, gst_caps_simplify (tmp_caps));
562 }
563
564 self->allowed_caps = gst_caps_simplify (out_caps);
565
566 GST_DEBUG_OBJECT (self, "allowed caps = %" GST_PTR_FORMAT,
567 self->allowed_caps);
568
569 return (self->allowed_caps && !gst_caps_is_empty (self->allowed_caps));
570 }
571
572 static gboolean
set_drm_property(gint fd,guint32 object,guint32 object_type,drmModeObjectPropertiesPtr properties,const gchar * prop_name,guint64 value)573 set_drm_property (gint fd, guint32 object, guint32 object_type,
574 drmModeObjectPropertiesPtr properties, const gchar * prop_name,
575 guint64 value)
576 {
577 guint i;
578 gboolean ret = FALSE;
579
580 for (i = 0; i < properties->count_props && !ret; i++) {
581 drmModePropertyPtr property;
582
583 property = drmModeGetProperty (fd, properties->props[i]);
584
585 /* GstStructure parser limits the set of supported character, so we
586 * replace the invalid characters with '-'. In DRM, this is generally
587 * replacing spaces into '-'. */
588 g_strcanon (property->name, G_CSET_a_2_z G_CSET_A_2_Z G_CSET_DIGITS "_",
589 '-');
590
591 GST_LOG ("found property %s (looking for %s)", property->name, prop_name);
592
593 if (!strcmp (property->name, prop_name)) {
594 drmModeObjectSetProperty (fd, object, object_type,
595 property->prop_id, value);
596 ret = TRUE;
597 }
598 drmModeFreeProperty (property);
599 }
600
601 return ret;
602 }
603
604 typedef struct
605 {
606 GstKMSSink *self;
607 drmModeObjectPropertiesPtr properties;
608 guint obj_id;
609 guint obj_type;
610 const gchar *obj_type_str;
611 } SetPropsIter;
612
613 static gboolean
set_obj_prop(GQuark field_id,const GValue * value,gpointer user_data)614 set_obj_prop (GQuark field_id, const GValue * value, gpointer user_data)
615 {
616 SetPropsIter *iter = user_data;
617 GstKMSSink *self = iter->self;
618 const gchar *name;
619 guint64 v;
620
621 name = g_quark_to_string (field_id);
622
623 if (G_VALUE_HOLDS (value, G_TYPE_INT))
624 v = g_value_get_int (value);
625 else if (G_VALUE_HOLDS (value, G_TYPE_UINT))
626 v = g_value_get_uint (value);
627 else if (G_VALUE_HOLDS (value, G_TYPE_INT64))
628 v = g_value_get_int64 (value);
629 else if (G_VALUE_HOLDS (value, G_TYPE_UINT64))
630 v = g_value_get_uint64 (value);
631 else {
632 GST_WARNING_OBJECT (self,
633 "'uint64' value expected for control '%s'.", name);
634 return TRUE;
635 }
636
637 if (set_drm_property (self->fd, iter->obj_id, iter->obj_type,
638 iter->properties, name, v)) {
639 GST_DEBUG_OBJECT (self,
640 "Set %s property '%s' to %" G_GUINT64_FORMAT,
641 iter->obj_type_str, name, v);
642 } else {
643 GST_WARNING_OBJECT (self,
644 "Failed to set %s property '%s' to %" G_GUINT64_FORMAT,
645 iter->obj_type_str, name, v);
646 }
647
648 return TRUE;
649 }
650
651 static void
gst_kms_sink_update_properties(SetPropsIter * iter,GstStructure * props)652 gst_kms_sink_update_properties (SetPropsIter * iter, GstStructure * props)
653 {
654 GstKMSSink *self = iter->self;
655
656 iter->properties = drmModeObjectGetProperties (self->fd, iter->obj_id,
657 iter->obj_type);
658
659 gst_structure_foreach (props, set_obj_prop, iter);
660
661 drmModeFreeObjectProperties (iter->properties);
662 }
663
664 static void
gst_kms_sink_update_connector_properties(GstKMSSink * self)665 gst_kms_sink_update_connector_properties (GstKMSSink * self)
666 {
667 SetPropsIter iter;
668
669 if (!self->connector_props)
670 return;
671
672 iter.self = self;
673 iter.obj_id = self->conn_id;
674 iter.obj_type = DRM_MODE_OBJECT_CONNECTOR;
675 iter.obj_type_str = "connector";
676
677 gst_kms_sink_update_properties (&iter, self->connector_props);
678 }
679
680 static void
gst_kms_sink_update_plane_properties(GstKMSSink * self)681 gst_kms_sink_update_plane_properties (GstKMSSink * self)
682 {
683 SetPropsIter iter;
684
685 if (!self->plane_props)
686 return;
687
688 iter.self = self;
689 iter.obj_id = self->plane_id;
690 iter.obj_type = DRM_MODE_OBJECT_PLANE;
691 iter.obj_type_str = "plane";
692
693 gst_kms_sink_update_properties (&iter, self->plane_props);
694 }
695
696 static gboolean
gst_kms_sink_start(GstBaseSink * bsink)697 gst_kms_sink_start (GstBaseSink * bsink)
698 {
699 GstKMSSink *self;
700 drmModeRes *res;
701 drmModeConnector *conn;
702 drmModeCrtc *crtc;
703 drmModePlaneRes *pres;
704 drmModePlane *plane;
705 gboolean universal_planes;
706 gboolean ret;
707
708 self = GST_KMS_SINK (bsink);
709 universal_planes = FALSE;
710 ret = FALSE;
711 res = NULL;
712 conn = NULL;
713 crtc = NULL;
714 pres = NULL;
715 plane = NULL;
716
717 if (self->devname || self->bus_id)
718 self->fd = drmOpen (self->devname, self->bus_id);
719 else
720 self->fd = kms_open (&self->devname);
721 if (self->fd < 0)
722 goto open_failed;
723
724 log_drm_version (self);
725 if (!get_drm_caps (self))
726 goto bail;
727
728 res = drmModeGetResources (self->fd);
729 if (!res)
730 goto resources_failed;
731
732 if (self->conn_id == -1)
733 conn = find_main_monitor (self->fd, res);
734 else
735 conn = drmModeGetConnector (self->fd, self->conn_id);
736 if (!conn)
737 goto connector_failed;
738
739 crtc = find_crtc_for_connector (self->fd, res, conn, &self->pipe);
740 if (!crtc)
741 goto crtc_failed;
742
743 if (!crtc->mode_valid || self->modesetting_enabled) {
744 GST_DEBUG_OBJECT (self, "enabling modesetting");
745 self->modesetting_enabled = TRUE;
746 universal_planes = TRUE;
747 }
748
749 if (crtc->mode_valid && self->modesetting_enabled && self->restore_crtc) {
750 self->saved_crtc = (drmModeCrtc *) crtc;
751 }
752
753 retry_find_plane:
754 if (universal_planes &&
755 drmSetClientCap (self->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1))
756 goto set_cap_failed;
757
758 pres = drmModeGetPlaneResources (self->fd);
759 if (!pres)
760 goto plane_resources_failed;
761
762 if (self->plane_id == -1)
763 plane = find_plane_for_crtc (self->fd, res, pres, crtc->crtc_id);
764 else
765 plane = drmModeGetPlane (self->fd, self->plane_id);
766 if (!plane)
767 goto plane_failed;
768
769 if (!ensure_allowed_caps (self, conn, plane, res))
770 goto allowed_caps_failed;
771
772 self->conn_id = conn->connector_id;
773 self->crtc_id = crtc->crtc_id;
774 self->plane_id = plane->plane_id;
775
776 GST_INFO_OBJECT (self, "connector id = %d / crtc id = %d / plane id = %d",
777 self->conn_id, self->crtc_id, self->plane_id);
778
779 GST_OBJECT_LOCK (self);
780 self->hdisplay = crtc->mode.hdisplay;
781 self->vdisplay = crtc->mode.vdisplay;
782
783 if (self->render_rect.w == 0 || self->render_rect.h == 0) {
784 self->render_rect.x = 0;
785 self->render_rect.y = 0;
786 self->render_rect.w = self->hdisplay;
787 self->render_rect.h = self->vdisplay;
788 }
789
790 self->pending_rect = self->render_rect;
791 GST_OBJECT_UNLOCK (self);
792
793 self->buffer_id = crtc->buffer_id;
794
795 self->mm_width = conn->mmWidth;
796 self->mm_height = conn->mmHeight;
797
798 GST_INFO_OBJECT (self, "display size: pixels = %dx%d / millimeters = %dx%d",
799 self->hdisplay, self->vdisplay, self->mm_width, self->mm_height);
800
801 self->pollfd.fd = self->fd;
802 gst_poll_add_fd (self->poll, &self->pollfd);
803 gst_poll_fd_ctl_read (self->poll, &self->pollfd, TRUE);
804
805 g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_WIDTH]);
806 g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_HEIGHT]);
807
808 gst_kms_sink_update_connector_properties (self);
809 gst_kms_sink_update_plane_properties (self);
810
811 ret = TRUE;
812
813 bail:
814 if (plane)
815 drmModeFreePlane (plane);
816 if (pres)
817 drmModeFreePlaneResources (pres);
818 if (crtc != self->saved_crtc)
819 drmModeFreeCrtc (crtc);
820 if (conn)
821 drmModeFreeConnector (conn);
822 if (res)
823 drmModeFreeResources (res);
824
825 if (!ret && self->fd >= 0) {
826 drmClose (self->fd);
827 self->fd = -1;
828 }
829
830 return ret;
831
832 /* ERRORS */
833 open_failed:
834 {
835 GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ_WRITE,
836 ("Could not open DRM module %s", GST_STR_NULL (self->devname)),
837 ("reason: %s (%d)", strerror (errno), errno));
838 return FALSE;
839 }
840
841 resources_failed:
842 {
843 GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
844 ("drmModeGetResources failed"),
845 ("reason: %s (%d)", strerror (errno), errno));
846 goto bail;
847 }
848
849 connector_failed:
850 {
851 GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
852 ("Could not find a valid monitor connector"), (NULL));
853 goto bail;
854 }
855
856 crtc_failed:
857 {
858 GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
859 ("Could not find a crtc for connector"), (NULL));
860 goto bail;
861 }
862
863 set_cap_failed:
864 {
865 GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
866 ("Could not set universal planes capability bit"), (NULL));
867 goto bail;
868 }
869
870 plane_resources_failed:
871 {
872 GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
873 ("drmModeGetPlaneResources failed"),
874 ("reason: %s (%d)", strerror (errno), errno));
875 goto bail;
876 }
877
878 plane_failed:
879 {
880 if (universal_planes) {
881 GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
882 ("Could not find a plane for crtc"), (NULL));
883 goto bail;
884 } else {
885 universal_planes = TRUE;
886 goto retry_find_plane;
887 }
888 }
889
890 allowed_caps_failed:
891 {
892 GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
893 ("Could not get allowed GstCaps of device"),
894 ("driver does not provide mode settings configuration"));
895 goto bail;
896 }
897 }
898
899 static gboolean
gst_kms_sink_stop(GstBaseSink * bsink)900 gst_kms_sink_stop (GstBaseSink * bsink)
901 {
902 GstKMSSink *self;
903 int err;
904
905 self = GST_KMS_SINK (bsink);
906
907 if (self->allocator)
908 gst_kms_allocator_clear_cache (self->allocator);
909
910 gst_buffer_replace (&self->last_buffer, NULL);
911 gst_caps_replace (&self->allowed_caps, NULL);
912 gst_object_replace ((GstObject **) & self->pool, NULL);
913 gst_object_replace ((GstObject **) & self->allocator, NULL);
914
915 gst_poll_remove_fd (self->poll, &self->pollfd);
916 gst_poll_restart (self->poll);
917 gst_poll_fd_init (&self->pollfd);
918
919 if (self->saved_crtc) {
920 drmModeCrtc *crtc = (drmModeCrtc *) self->saved_crtc;
921
922 err = drmModeSetCrtc (self->fd, crtc->crtc_id, crtc->buffer_id, crtc->x,
923 crtc->y, (uint32_t *) & self->conn_id, 1, &crtc->mode);
924 if (err)
925 GST_ERROR_OBJECT (self, "Failed to restore previous CRTC mode: %s",
926 g_strerror (errno));
927
928 drmModeFreeCrtc (crtc);
929 self->saved_crtc = NULL;
930 }
931
932 if (self->fd >= 0) {
933 drmClose (self->fd);
934 self->fd = -1;
935 }
936
937 GST_OBJECT_LOCK (bsink);
938 self->hdisplay = 0;
939 self->vdisplay = 0;
940 self->pending_rect.x = 0;
941 self->pending_rect.y = 0;
942 self->pending_rect.w = 0;
943 self->pending_rect.h = 0;
944 self->render_rect = self->pending_rect;
945 GST_OBJECT_UNLOCK (bsink);
946
947 g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_WIDTH]);
948 g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_HEIGHT]);
949
950 return TRUE;
951 }
952
953 static GstCaps *
gst_kms_sink_get_allowed_caps(GstKMSSink * self)954 gst_kms_sink_get_allowed_caps (GstKMSSink * self)
955 {
956 if (!self->allowed_caps)
957 return NULL; /* base class will return the template caps */
958 return gst_caps_ref (self->allowed_caps);
959 }
960
961 static GstCaps *
gst_kms_sink_get_caps(GstBaseSink * bsink,GstCaps * filter)962 gst_kms_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
963 {
964 GstKMSSink *self;
965 GstCaps *caps, *out_caps;
966 GstStructure *s;
967 guint dpy_par_n, dpy_par_d;
968
969 self = GST_KMS_SINK (bsink);
970
971 caps = gst_kms_sink_get_allowed_caps (self);
972 if (!caps)
973 return NULL;
974
975 GST_OBJECT_LOCK (self);
976
977 if (!self->can_scale) {
978 out_caps = gst_caps_new_empty ();
979 gst_video_calculate_device_ratio (self->hdisplay, self->vdisplay,
980 self->mm_width, self->mm_height, &dpy_par_n, &dpy_par_d);
981
982 s = gst_structure_copy (gst_caps_get_structure (caps, 0));
983 gst_structure_set (s, "width", G_TYPE_INT, self->pending_rect.w,
984 "height", G_TYPE_INT, self->pending_rect.h,
985 "pixel-aspect-ratio", GST_TYPE_FRACTION, dpy_par_n, dpy_par_d, NULL);
986
987 gst_caps_append_structure (out_caps, s);
988
989 out_caps = gst_caps_merge (out_caps, caps);
990 caps = NULL;
991
992 /* enforce our display aspect ratio */
993 gst_caps_set_simple (out_caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
994 dpy_par_n, dpy_par_d, NULL);
995 } else {
996 out_caps = gst_caps_make_writable (caps);
997 caps = NULL;
998 }
999
1000 GST_OBJECT_UNLOCK (self);
1001
1002 GST_DEBUG_OBJECT (self, "Proposing caps %" GST_PTR_FORMAT, out_caps);
1003
1004 if (filter) {
1005 caps = out_caps;
1006 out_caps = gst_caps_intersect_full (caps, filter, GST_CAPS_INTERSECT_FIRST);
1007 gst_caps_unref (caps);
1008 }
1009
1010 return out_caps;
1011 }
1012
1013 static void
ensure_kms_allocator(GstKMSSink * self)1014 ensure_kms_allocator (GstKMSSink * self)
1015 {
1016 if (self->allocator)
1017 return;
1018 self->allocator = gst_kms_allocator_new (self->fd);
1019 }
1020
1021 static GstBufferPool *
gst_kms_sink_create_pool(GstKMSSink * self,GstCaps * caps,gsize size,gint min)1022 gst_kms_sink_create_pool (GstKMSSink * self, GstCaps * caps, gsize size,
1023 gint min)
1024 {
1025 GstBufferPool *pool;
1026 GstStructure *config;
1027
1028 pool = gst_kms_buffer_pool_new ();
1029 if (!pool)
1030 goto pool_failed;
1031
1032 config = gst_buffer_pool_get_config (pool);
1033 gst_buffer_pool_config_set_params (config, caps, size, min, 0);
1034 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
1035
1036 ensure_kms_allocator (self);
1037 gst_buffer_pool_config_set_allocator (config, self->allocator, NULL);
1038
1039 if (!gst_buffer_pool_set_config (pool, config))
1040 goto config_failed;
1041
1042 return pool;
1043
1044 /* ERRORS */
1045 pool_failed:
1046 {
1047 GST_ERROR_OBJECT (self, "failed to create buffer pool");
1048 return NULL;
1049 }
1050 config_failed:
1051 {
1052 GST_ERROR_OBJECT (self, "failed to set config");
1053 gst_object_unref (pool);
1054 return NULL;
1055 }
1056 }
1057
1058 static gboolean
gst_kms_sink_calculate_display_ratio(GstKMSSink * self,GstVideoInfo * vinfo)1059 gst_kms_sink_calculate_display_ratio (GstKMSSink * self, GstVideoInfo * vinfo)
1060 {
1061 guint dar_n, dar_d;
1062 guint video_width, video_height;
1063 guint video_par_n, video_par_d;
1064 guint dpy_par_n, dpy_par_d;
1065
1066 video_width = GST_VIDEO_INFO_WIDTH (vinfo);
1067 video_height = GST_VIDEO_INFO_HEIGHT (vinfo);
1068 video_par_n = GST_VIDEO_INFO_PAR_N (vinfo);
1069 video_par_d = GST_VIDEO_INFO_PAR_D (vinfo);
1070
1071 if (self->can_scale) {
1072 gst_video_calculate_device_ratio (self->hdisplay, self->vdisplay,
1073 self->mm_width, self->mm_height, &dpy_par_n, &dpy_par_d);
1074 } else {
1075 GST_VIDEO_SINK_WIDTH (self) = video_width;
1076 GST_VIDEO_SINK_HEIGHT (self) = video_height;
1077 goto out;
1078 }
1079
1080 if (!gst_video_calculate_display_ratio (&dar_n, &dar_d, video_width,
1081 video_height, video_par_n, video_par_d, dpy_par_n, dpy_par_d))
1082 return FALSE;
1083
1084 GST_DEBUG_OBJECT (self, "video calculated display ratio: %d/%d", dar_n,
1085 dar_d);
1086
1087 /* now find a width x height that respects this display ratio.
1088 * prefer those that have one of w/h the same as the incoming video
1089 * using wd / hd = dar_n / dar_d */
1090
1091 /* start with same height, because of interlaced video */
1092 /* check hd / dar_d is an integer scale factor, and scale wd with the PAR */
1093 if (video_height % dar_d == 0) {
1094 GST_DEBUG_OBJECT (self, "keeping video height");
1095 GST_VIDEO_SINK_WIDTH (self) = (guint)
1096 gst_util_uint64_scale_int (video_height, dar_n, dar_d);
1097 GST_VIDEO_SINK_HEIGHT (self) = video_height;
1098 } else if (video_width % dar_n == 0) {
1099 GST_DEBUG_OBJECT (self, "keeping video width");
1100 GST_VIDEO_SINK_WIDTH (self) = video_width;
1101 GST_VIDEO_SINK_HEIGHT (self) = (guint)
1102 gst_util_uint64_scale_int (video_width, dar_d, dar_n);
1103 } else {
1104 GST_DEBUG_OBJECT (self, "approximating while keeping video height");
1105 GST_VIDEO_SINK_WIDTH (self) = (guint)
1106 gst_util_uint64_scale_int (video_height, dar_n, dar_d);
1107 GST_VIDEO_SINK_HEIGHT (self) = video_height;
1108 }
1109
1110 out:
1111 GST_DEBUG_OBJECT (self, "scaling to %dx%d", GST_VIDEO_SINK_WIDTH (self),
1112 GST_VIDEO_SINK_HEIGHT (self));
1113
1114 return TRUE;
1115 }
1116
1117 static gboolean
gst_kms_sink_set_caps(GstBaseSink * bsink,GstCaps * caps)1118 gst_kms_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
1119 {
1120 GstKMSSink *self;
1121 GstVideoInfo vinfo;
1122 GstBufferPool *newpool, *oldpool;
1123
1124 self = GST_KMS_SINK (bsink);
1125
1126 /* We are going to change the internal buffer pool, which means it will no
1127 * longer be compatbile with the last_buffer size. Drain now, as we won't be
1128 * able to do that later on. */
1129 gst_kms_sink_drain (self);
1130
1131 if (!gst_video_info_from_caps (&vinfo, caps))
1132 goto invalid_format;
1133
1134 if (!gst_kms_sink_calculate_display_ratio (self, &vinfo))
1135 goto no_disp_ratio;
1136
1137 if (GST_VIDEO_SINK_WIDTH (self) <= 0 || GST_VIDEO_SINK_HEIGHT (self) <= 0)
1138 goto invalid_size;
1139
1140 /* create a new pool for the new configuration */
1141 newpool = gst_kms_sink_create_pool (self, caps, GST_VIDEO_INFO_SIZE (&vinfo),
1142 2);
1143 if (!newpool)
1144 goto no_pool;
1145
1146 /* we don't activate the internal pool yet as it may not be needed */
1147 oldpool = self->pool;
1148 self->pool = newpool;
1149
1150 if (oldpool) {
1151 gst_buffer_pool_set_active (oldpool, FALSE);
1152 gst_object_unref (oldpool);
1153 }
1154
1155 if (self->modesetting_enabled && !configure_mode_setting (self, &vinfo))
1156 goto modesetting_failed;
1157
1158 self->vinfo = vinfo;
1159
1160 GST_OBJECT_LOCK (self);
1161 if (self->reconfigure) {
1162 self->reconfigure = FALSE;
1163 self->render_rect = self->pending_rect;
1164 }
1165 GST_OBJECT_UNLOCK (self);
1166
1167 GST_DEBUG_OBJECT (self, "negotiated caps = %" GST_PTR_FORMAT, caps);
1168
1169 return TRUE;
1170
1171 /* ERRORS */
1172 invalid_format:
1173 {
1174 GST_ERROR_OBJECT (self, "caps invalid");
1175 return FALSE;
1176 }
1177
1178 invalid_size:
1179 {
1180 GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
1181 ("Invalid image size."));
1182 return FALSE;
1183 }
1184
1185 no_disp_ratio:
1186 {
1187 GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
1188 ("Error calculating the output display ratio of the video."));
1189 return FALSE;
1190 }
1191 no_pool:
1192 {
1193 /* Already warned in create_pool */
1194 return FALSE;
1195 }
1196
1197 modesetting_failed:
1198 {
1199 GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
1200 ("failed to configure video mode"));
1201 return FALSE;
1202 }
1203
1204 }
1205
1206 static gboolean
gst_kms_sink_propose_allocation(GstBaseSink * bsink,GstQuery * query)1207 gst_kms_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
1208 {
1209 GstKMSSink *self;
1210 GstCaps *caps;
1211 gboolean need_pool;
1212 GstVideoInfo vinfo;
1213 GstBufferPool *pool;
1214 gsize size;
1215
1216 self = GST_KMS_SINK (bsink);
1217
1218 gst_query_parse_allocation (query, &caps, &need_pool);
1219 if (!caps)
1220 goto no_caps;
1221 if (!gst_video_info_from_caps (&vinfo, caps))
1222 goto invalid_caps;
1223
1224 size = GST_VIDEO_INFO_SIZE (&vinfo);
1225
1226 pool = NULL;
1227 if (need_pool) {
1228 pool = gst_kms_sink_create_pool (self, caps, size, 0);
1229 if (!pool)
1230 goto no_pool;
1231
1232 /* Only export for pool used upstream */
1233 if (self->has_prime_export) {
1234 GstStructure *config = gst_buffer_pool_get_config (pool);
1235 gst_buffer_pool_config_add_option (config,
1236 GST_BUFFER_POOL_OPTION_KMS_PRIME_EXPORT);
1237 gst_buffer_pool_set_config (pool, config);
1238 }
1239 }
1240
1241 /* we need at least 2 buffer because we hold on to the last one */
1242 gst_query_add_allocation_pool (query, pool, size, 2, 0);
1243 if (pool)
1244 gst_object_unref (pool);
1245
1246 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
1247 gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE, NULL);
1248
1249 return TRUE;
1250
1251 /* ERRORS */
1252 no_caps:
1253 {
1254 GST_DEBUG_OBJECT (bsink, "no caps specified");
1255 return FALSE;
1256 }
1257 invalid_caps:
1258 {
1259 GST_DEBUG_OBJECT (bsink, "invalid caps specified");
1260 return FALSE;
1261 }
1262 no_pool:
1263 {
1264 /* Already warned in create_pool */
1265 return FALSE;
1266 }
1267 }
1268
1269 static void
sync_handler(gint fd,guint frame,guint sec,guint usec,gpointer data)1270 sync_handler (gint fd, guint frame, guint sec, guint usec, gpointer data)
1271 {
1272 gboolean *waiting;
1273
1274 waiting = data;
1275 *waiting = FALSE;
1276 }
1277
1278 static gboolean
gst_kms_sink_sync(GstKMSSink * self)1279 gst_kms_sink_sync (GstKMSSink * self)
1280 {
1281 gint ret;
1282 gboolean waiting;
1283 drmEventContext evctxt = {
1284 .version = DRM_EVENT_CONTEXT_VERSION,
1285 .page_flip_handler = sync_handler,
1286 .vblank_handler = sync_handler,
1287 };
1288 drmVBlank vbl = {
1289 .request = {
1290 .type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT,
1291 .sequence = 1,
1292 .signal = (gulong) & waiting,
1293 },
1294 };
1295
1296 if (self->pipe == 1)
1297 vbl.request.type |= DRM_VBLANK_SECONDARY;
1298 else if (self->pipe > 1)
1299 vbl.request.type |= self->pipe << DRM_VBLANK_HIGH_CRTC_SHIFT;
1300
1301 waiting = TRUE;
1302 if (!self->has_async_page_flip && !self->modesetting_enabled) {
1303 ret = drmWaitVBlank (self->fd, &vbl);
1304 if (ret)
1305 goto vblank_failed;
1306 } else {
1307 ret = drmModePageFlip (self->fd, self->crtc_id, self->buffer_id,
1308 DRM_MODE_PAGE_FLIP_EVENT, &waiting);
1309 if (ret)
1310 goto pageflip_failed;
1311 }
1312
1313 while (waiting) {
1314 do {
1315 ret = gst_poll_wait (self->poll, 3 * GST_SECOND);
1316 } while (ret == -1 && (errno == EAGAIN || errno == EINTR));
1317
1318 ret = drmHandleEvent (self->fd, &evctxt);
1319 if (ret)
1320 goto event_failed;
1321 }
1322
1323 return TRUE;
1324
1325 /* ERRORS */
1326 vblank_failed:
1327 {
1328 GST_WARNING_OBJECT (self, "drmWaitVBlank failed: %s (%d)", strerror (-ret),
1329 ret);
1330 return FALSE;
1331 }
1332 pageflip_failed:
1333 {
1334 GST_WARNING_OBJECT (self, "drmModePageFlip failed: %s (%d)",
1335 strerror (-ret), ret);
1336 return FALSE;
1337 }
1338 event_failed:
1339 {
1340 GST_ERROR_OBJECT (self, "drmHandleEvent failed: %s (%d)", strerror (-ret),
1341 ret);
1342 return FALSE;
1343 }
1344 }
1345
1346 static gboolean
gst_kms_sink_import_dmabuf(GstKMSSink * self,GstBuffer * inbuf,GstBuffer ** outbuf)1347 gst_kms_sink_import_dmabuf (GstKMSSink * self, GstBuffer * inbuf,
1348 GstBuffer ** outbuf)
1349 {
1350 gint prime_fds[GST_VIDEO_MAX_PLANES] = { 0, };
1351 GstVideoMeta *meta;
1352 guint i, n_mem, n_planes;
1353 GstKMSMemory *kmsmem;
1354 guint mems_idx[GST_VIDEO_MAX_PLANES];
1355 gsize mems_skip[GST_VIDEO_MAX_PLANES];
1356 GstMemory *mems[GST_VIDEO_MAX_PLANES];
1357
1358 if (!self->has_prime_import)
1359 return FALSE;
1360
1361 /* This will eliminate most non-dmabuf out there */
1362 if (!gst_is_dmabuf_memory (gst_buffer_peek_memory (inbuf, 0)))
1363 return FALSE;
1364
1365 n_planes = GST_VIDEO_INFO_N_PLANES (&self->vinfo);
1366 n_mem = gst_buffer_n_memory (inbuf);
1367 meta = gst_buffer_get_video_meta (inbuf);
1368
1369 GST_TRACE_OBJECT (self, "Found a dmabuf with %u planes and %u memories",
1370 n_planes, n_mem);
1371
1372 /* We cannot have multiple dmabuf per plane */
1373 if (n_mem > n_planes)
1374 return FALSE;
1375 g_assert (n_planes != 0);
1376
1377 /* Update video info based on video meta */
1378 if (meta) {
1379 GST_VIDEO_INFO_WIDTH (&self->vinfo) = meta->width;
1380 GST_VIDEO_INFO_HEIGHT (&self->vinfo) = meta->height;
1381
1382 for (i = 0; i < meta->n_planes; i++) {
1383 GST_VIDEO_INFO_PLANE_OFFSET (&self->vinfo, i) = meta->offset[i];
1384 GST_VIDEO_INFO_PLANE_STRIDE (&self->vinfo, i) = meta->stride[i];
1385 }
1386 }
1387
1388 /* Find and validate all memories */
1389 for (i = 0; i < n_planes; i++) {
1390 guint length;
1391
1392 if (!gst_buffer_find_memory (inbuf,
1393 GST_VIDEO_INFO_PLANE_OFFSET (&self->vinfo, i), 1,
1394 &mems_idx[i], &length, &mems_skip[i]))
1395 return FALSE;
1396
1397 mems[i] = gst_buffer_peek_memory (inbuf, mems_idx[i]);
1398
1399 /* adjust for memory offset, in case data does not
1400 * start from byte 0 in the dmabuf fd */
1401 mems_skip[i] += mems[i]->offset;
1402
1403 /* And all memory found must be dmabuf */
1404 if (!gst_is_dmabuf_memory (mems[i]))
1405 return FALSE;
1406 }
1407
1408 kmsmem = (GstKMSMemory *) gst_kms_allocator_get_cached (mems[0]);
1409 if (kmsmem) {
1410 GST_LOG_OBJECT (self, "found KMS mem %p in DMABuf mem %p with fb id = %d",
1411 kmsmem, mems[0], kmsmem->fb_id);
1412 goto wrap_mem;
1413 }
1414
1415 for (i = 0; i < n_planes; i++)
1416 prime_fds[i] = gst_dmabuf_memory_get_fd (mems[i]);
1417
1418 GST_LOG_OBJECT (self, "found these prime ids: %d, %d, %d, %d", prime_fds[0],
1419 prime_fds[1], prime_fds[2], prime_fds[3]);
1420
1421 kmsmem = gst_kms_allocator_dmabuf_import (self->allocator,
1422 prime_fds, n_planes, mems_skip, &self->vinfo);
1423 if (!kmsmem)
1424 return FALSE;
1425
1426 GST_LOG_OBJECT (self, "setting KMS mem %p to DMABuf mem %p with fb id = %d",
1427 kmsmem, mems[0], kmsmem->fb_id);
1428 gst_kms_allocator_cache (self->allocator, mems[0], GST_MEMORY_CAST (kmsmem));
1429
1430 wrap_mem:
1431 *outbuf = gst_buffer_new ();
1432 if (!*outbuf)
1433 return FALSE;
1434 gst_buffer_append_memory (*outbuf, gst_memory_ref (GST_MEMORY_CAST (kmsmem)));
1435 gst_buffer_add_parent_buffer_meta (*outbuf, inbuf);
1436
1437 return TRUE;
1438 }
1439
1440 static GstBuffer *
gst_kms_sink_copy_to_dumb_buffer(GstKMSSink * self,GstBuffer * inbuf)1441 gst_kms_sink_copy_to_dumb_buffer (GstKMSSink * self, GstBuffer * inbuf)
1442 {
1443 GstFlowReturn ret;
1444 GstVideoFrame inframe, outframe;
1445 gboolean success;
1446 GstBuffer *buf = NULL;
1447
1448 if (!gst_buffer_pool_set_active (self->pool, TRUE))
1449 goto activate_pool_failed;
1450
1451 ret = gst_buffer_pool_acquire_buffer (self->pool, &buf, NULL);
1452 if (ret != GST_FLOW_OK)
1453 goto create_buffer_failed;
1454
1455 if (!gst_video_frame_map (&inframe, &self->vinfo, inbuf, GST_MAP_READ))
1456 goto error_map_src_buffer;
1457
1458 if (!gst_video_frame_map (&outframe, &self->vinfo, buf, GST_MAP_WRITE))
1459 goto error_map_dst_buffer;
1460
1461 success = gst_video_frame_copy (&outframe, &inframe);
1462 gst_video_frame_unmap (&outframe);
1463 gst_video_frame_unmap (&inframe);
1464 if (!success)
1465 goto error_copy_buffer;
1466
1467 return buf;
1468
1469 bail:
1470 {
1471 if (buf)
1472 gst_buffer_unref (buf);
1473 return NULL;
1474 }
1475
1476 /* ERRORS */
1477 activate_pool_failed:
1478 {
1479 GST_ELEMENT_ERROR (self, STREAM, FAILED, ("failed to activate buffer pool"),
1480 ("failed to activate buffer pool"));
1481 return NULL;
1482 }
1483 create_buffer_failed:
1484 {
1485 GST_ELEMENT_ERROR (self, STREAM, FAILED, ("allocation failed"),
1486 ("failed to create buffer"));
1487 return NULL;
1488 }
1489 error_copy_buffer:
1490 {
1491 GST_WARNING_OBJECT (self, "failed to upload buffer");
1492 goto bail;
1493 }
1494 error_map_dst_buffer:
1495 {
1496 gst_video_frame_unmap (&inframe);
1497 /* fall-through */
1498 }
1499 error_map_src_buffer:
1500 {
1501 GST_WARNING_OBJECT (self, "failed to map buffer");
1502 goto bail;
1503 }
1504 }
1505
1506 static GstBuffer *
gst_kms_sink_get_input_buffer(GstKMSSink * self,GstBuffer * inbuf)1507 gst_kms_sink_get_input_buffer (GstKMSSink * self, GstBuffer * inbuf)
1508 {
1509 GstMemory *mem;
1510 GstBuffer *buf = NULL;
1511
1512 mem = gst_buffer_peek_memory (inbuf, 0);
1513 if (!mem)
1514 return NULL;
1515
1516 if (gst_is_kms_memory (mem))
1517 return gst_buffer_ref (inbuf);
1518
1519 if (gst_kms_sink_import_dmabuf (self, inbuf, &buf))
1520 goto done;
1521
1522 GST_CAT_INFO_OBJECT (CAT_PERFORMANCE, self, "frame copy");
1523 buf = gst_kms_sink_copy_to_dumb_buffer (self, inbuf);
1524
1525 done:
1526 /* Copy all the non-memory related metas, this way CropMeta will be
1527 * available upon GstVideoOverlay::expose calls. */
1528 if (buf)
1529 gst_buffer_copy_into (buf, inbuf, GST_BUFFER_COPY_METADATA, 0, -1);
1530
1531 return buf;
1532 }
1533
1534 static GstFlowReturn
gst_kms_sink_show_frame(GstVideoSink * vsink,GstBuffer * buf)1535 gst_kms_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
1536 {
1537 gint ret;
1538 GstBuffer *buffer = NULL;
1539 guint32 fb_id;
1540 GstKMSSink *self;
1541 GstVideoCropMeta *crop;
1542 GstVideoRectangle src = { 0, };
1543 GstVideoRectangle dst = { 0, };
1544 GstVideoRectangle result;
1545 GstFlowReturn res;
1546
1547 self = GST_KMS_SINK (vsink);
1548
1549 res = GST_FLOW_ERROR;
1550
1551 if (buf)
1552 buffer = gst_kms_sink_get_input_buffer (self, buf);
1553 else if (self->last_buffer)
1554 buffer = gst_buffer_ref (self->last_buffer);
1555
1556 /* Make sure buf is not used accidentally */
1557 buf = NULL;
1558
1559 if (!buffer)
1560 return GST_FLOW_ERROR;
1561 fb_id = gst_kms_memory_get_fb_id (gst_buffer_peek_memory (buffer, 0));
1562 if (fb_id == 0)
1563 goto buffer_invalid;
1564
1565 GST_TRACE_OBJECT (self, "displaying fb %d", fb_id);
1566
1567 GST_OBJECT_LOCK (self);
1568 if (self->modesetting_enabled) {
1569 self->buffer_id = fb_id;
1570 goto sync_frame;
1571 }
1572
1573 if ((crop = gst_buffer_get_video_crop_meta (buffer))) {
1574 GstVideoInfo vinfo = self->vinfo;
1575 vinfo.width = crop->width;
1576 vinfo.height = crop->height;
1577
1578 if (!gst_kms_sink_calculate_display_ratio (self, &vinfo))
1579 goto no_disp_ratio;
1580
1581 src.x = crop->x;
1582 src.y = crop->y;
1583 }
1584
1585 src.w = GST_VIDEO_SINK_WIDTH (self);
1586 src.h = GST_VIDEO_SINK_HEIGHT (self);
1587
1588 dst.w = self->render_rect.w;
1589 dst.h = self->render_rect.h;
1590
1591 retry_set_plane:
1592 gst_video_sink_center_rect (src, dst, &result, self->can_scale);
1593
1594 result.x += self->render_rect.x;
1595 result.y += self->render_rect.y;
1596
1597 if (crop) {
1598 src.w = crop->width;
1599 src.h = crop->height;
1600 } else {
1601 src.w = GST_VIDEO_INFO_WIDTH (&self->vinfo);
1602 src.h = GST_VIDEO_INFO_HEIGHT (&self->vinfo);
1603 }
1604
1605 /* handle out of screen case */
1606 if ((result.x + result.w) > self->hdisplay)
1607 result.w = self->hdisplay - result.x;
1608
1609 if ((result.y + result.h) > self->vdisplay)
1610 result.h = self->vdisplay - result.y;
1611
1612 if (result.w <= 0 || result.h <= 0) {
1613 GST_WARNING_OBJECT (self, "video is out of display range");
1614 goto sync_frame;
1615 }
1616
1617 /* to make sure it can be show when driver don't support scale */
1618 if (!self->can_scale) {
1619 src.w = result.w;
1620 src.h = result.h;
1621 }
1622
1623 GST_TRACE_OBJECT (self,
1624 "drmModeSetPlane at (%i,%i) %ix%i sourcing at (%i,%i) %ix%i",
1625 result.x, result.y, result.w, result.h, src.x, src.y, src.w, src.h);
1626
1627 ret = drmModeSetPlane (self->fd, self->plane_id, self->crtc_id, fb_id, 0,
1628 result.x, result.y, result.w, result.h,
1629 /* source/cropping coordinates are given in Q16 */
1630 src.x << 16, src.y << 16, src.w << 16, src.h << 16);
1631 if (ret) {
1632 if (self->can_scale) {
1633 self->can_scale = FALSE;
1634 goto retry_set_plane;
1635 }
1636 goto set_plane_failed;
1637 }
1638
1639 sync_frame:
1640 /* Wait for the previous frame to complete redraw */
1641 if (!gst_kms_sink_sync (self)) {
1642 GST_OBJECT_UNLOCK (self);
1643 goto bail;
1644 }
1645
1646 if (buffer != self->last_buffer)
1647 gst_buffer_replace (&self->last_buffer, buffer);
1648 g_clear_pointer (&self->tmp_kmsmem, gst_memory_unref);
1649
1650 GST_OBJECT_UNLOCK (self);
1651 res = GST_FLOW_OK;
1652
1653 bail:
1654 gst_buffer_unref (buffer);
1655 return res;
1656
1657 /* ERRORS */
1658 buffer_invalid:
1659 {
1660 GST_ERROR_OBJECT (self, "invalid buffer: it doesn't have a fb id");
1661 goto bail;
1662 }
1663 set_plane_failed:
1664 {
1665 GST_OBJECT_UNLOCK (self);
1666 GST_DEBUG_OBJECT (self, "result = { %d, %d, %d, %d} / "
1667 "src = { %d, %d, %d %d } / dst = { %d, %d, %d %d }", result.x, result.y,
1668 result.w, result.h, src.x, src.y, src.w, src.h, dst.x, dst.y, dst.w,
1669 dst.h);
1670 GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
1671 (NULL), ("drmModeSetPlane failed: %s (%d)", strerror (-ret), ret));
1672 goto bail;
1673 }
1674 no_disp_ratio:
1675 {
1676 GST_OBJECT_UNLOCK (self);
1677 GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
1678 ("Error calculating the output display ratio of the video."));
1679 goto bail;
1680 }
1681 }
1682
1683 static void
gst_kms_sink_drain(GstKMSSink * self)1684 gst_kms_sink_drain (GstKMSSink * self)
1685 {
1686 GstParentBufferMeta *parent_meta;
1687
1688 GST_DEBUG_OBJECT (self, "draining");
1689
1690 if (!self->last_buffer)
1691 return;
1692
1693 /* We only need to return the last_buffer if it depends on upstream buffer.
1694 * In this case, the last_buffer will have a GstParentBufferMeta set. */
1695 parent_meta = gst_buffer_get_parent_buffer_meta (self->last_buffer);
1696 if (parent_meta) {
1697 GstBuffer *dumb_buf;
1698 dumb_buf = gst_kms_sink_copy_to_dumb_buffer (self, parent_meta->buffer);
1699 gst_kms_allocator_clear_cache (self->allocator);
1700 gst_kms_sink_show_frame (GST_VIDEO_SINK (self), dumb_buf);
1701 gst_buffer_unref (dumb_buf);
1702 }
1703 }
1704
1705 static gboolean
gst_kms_sink_query(GstBaseSink * bsink,GstQuery * query)1706 gst_kms_sink_query (GstBaseSink * bsink, GstQuery * query)
1707 {
1708 GstKMSSink *self = GST_KMS_SINK (bsink);
1709
1710 switch (GST_QUERY_TYPE (query)) {
1711 case GST_QUERY_ALLOCATION:
1712 case GST_QUERY_DRAIN:
1713 {
1714 gst_kms_sink_drain (self);
1715 break;
1716 }
1717 default:
1718 break;
1719 }
1720
1721 return GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
1722 }
1723
1724 static void
gst_kms_sink_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)1725 gst_kms_sink_set_property (GObject * object, guint prop_id,
1726 const GValue * value, GParamSpec * pspec)
1727 {
1728 GstKMSSink *sink;
1729
1730 sink = GST_KMS_SINK (object);
1731
1732 switch (prop_id) {
1733 case PROP_DRIVER_NAME:
1734 g_free (sink->devname);
1735 sink->devname = g_value_dup_string (value);
1736 break;
1737 case PROP_BUS_ID:
1738 g_free (sink->bus_id);
1739 sink->bus_id = g_value_dup_string (value);
1740 break;
1741 case PROP_CONNECTOR_ID:
1742 sink->conn_id = g_value_get_int (value);
1743 break;
1744 case PROP_PLANE_ID:
1745 sink->plane_id = g_value_get_int (value);
1746 break;
1747 case PROP_FORCE_MODESETTING:
1748 sink->modesetting_enabled = g_value_get_boolean (value);
1749 break;
1750 case PROP_RESTORE_CRTC:
1751 sink->restore_crtc = g_value_get_boolean (value);
1752 break;
1753 case PROP_CAN_SCALE:
1754 sink->can_scale = g_value_get_boolean (value);
1755 break;
1756 case PROP_CONNECTOR_PROPS:{
1757 const GstStructure *s = gst_value_get_structure (value);
1758
1759 g_clear_pointer (&sink->connector_props, gst_structure_free);
1760
1761 if (s)
1762 sink->connector_props = gst_structure_copy (s);
1763
1764 break;
1765 }
1766 case PROP_PLANE_PROPS:{
1767 const GstStructure *s = gst_value_get_structure (value);
1768
1769 g_clear_pointer (&sink->plane_props, gst_structure_free);
1770
1771 if (s)
1772 sink->plane_props = gst_structure_copy (s);
1773
1774 break;
1775 }
1776 default:
1777 if (!gst_video_overlay_set_property (object, PROP_N, prop_id, value))
1778 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1779 break;
1780 }
1781 }
1782
1783 static void
gst_kms_sink_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)1784 gst_kms_sink_get_property (GObject * object, guint prop_id,
1785 GValue * value, GParamSpec * pspec)
1786 {
1787 GstKMSSink *sink;
1788
1789 sink = GST_KMS_SINK (object);
1790
1791 switch (prop_id) {
1792 case PROP_DRIVER_NAME:
1793 g_value_set_string (value, sink->devname);
1794 break;
1795 case PROP_BUS_ID:
1796 g_value_set_string (value, sink->bus_id);
1797 break;
1798 case PROP_CONNECTOR_ID:
1799 g_value_set_int (value, sink->conn_id);
1800 break;
1801 case PROP_PLANE_ID:
1802 g_value_set_int (value, sink->plane_id);
1803 break;
1804 case PROP_FORCE_MODESETTING:
1805 g_value_set_boolean (value, sink->modesetting_enabled);
1806 break;
1807 case PROP_RESTORE_CRTC:
1808 g_value_set_boolean (value, sink->restore_crtc);
1809 break;
1810 case PROP_CAN_SCALE:
1811 g_value_set_boolean (value, sink->can_scale);
1812 break;
1813 case PROP_DISPLAY_WIDTH:
1814 GST_OBJECT_LOCK (sink);
1815 g_value_set_int (value, sink->hdisplay);
1816 GST_OBJECT_UNLOCK (sink);
1817 break;
1818 case PROP_DISPLAY_HEIGHT:
1819 GST_OBJECT_LOCK (sink);
1820 g_value_set_int (value, sink->vdisplay);
1821 GST_OBJECT_UNLOCK (sink);
1822 break;
1823 case PROP_CONNECTOR_PROPS:
1824 gst_value_set_structure (value, sink->connector_props);
1825 break;
1826 case PROP_PLANE_PROPS:
1827 gst_value_set_structure (value, sink->plane_props);
1828 break;
1829 default:
1830 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1831 break;
1832 }
1833 }
1834
1835 static void
gst_kms_sink_finalize(GObject * object)1836 gst_kms_sink_finalize (GObject * object)
1837 {
1838 GstKMSSink *sink;
1839
1840 sink = GST_KMS_SINK (object);
1841 g_clear_pointer (&sink->devname, g_free);
1842 g_clear_pointer (&sink->bus_id, g_free);
1843 gst_poll_free (sink->poll);
1844 g_clear_pointer (&sink->connector_props, gst_structure_free);
1845 g_clear_pointer (&sink->plane_props, gst_structure_free);
1846 g_clear_pointer (&sink->tmp_kmsmem, gst_memory_unref);
1847
1848 G_OBJECT_CLASS (parent_class)->finalize (object);
1849 }
1850
1851 static void
gst_kms_sink_init(GstKMSSink * sink)1852 gst_kms_sink_init (GstKMSSink * sink)
1853 {
1854 sink->fd = -1;
1855 sink->conn_id = -1;
1856 sink->plane_id = -1;
1857 sink->can_scale = TRUE;
1858 gst_poll_fd_init (&sink->pollfd);
1859 sink->poll = gst_poll_new (TRUE);
1860 gst_video_info_init (&sink->vinfo);
1861 }
1862
1863 static void
gst_kms_sink_class_init(GstKMSSinkClass * klass)1864 gst_kms_sink_class_init (GstKMSSinkClass * klass)
1865 {
1866 GObjectClass *gobject_class;
1867 GstElementClass *element_class;
1868 GstBaseSinkClass *basesink_class;
1869 GstVideoSinkClass *videosink_class;
1870 GstCaps *caps;
1871
1872 gobject_class = G_OBJECT_CLASS (klass);
1873 element_class = GST_ELEMENT_CLASS (klass);
1874 basesink_class = GST_BASE_SINK_CLASS (klass);
1875 videosink_class = GST_VIDEO_SINK_CLASS (klass);
1876
1877 gst_element_class_set_static_metadata (element_class, "KMS video sink",
1878 "Sink/Video", GST_PLUGIN_DESC, "Víctor Jáquez <vjaquez@igalia.com>");
1879
1880 caps = gst_kms_sink_caps_template_fill ();
1881 gst_element_class_add_pad_template (element_class,
1882 gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
1883 gst_caps_unref (caps);
1884
1885 basesink_class->start = GST_DEBUG_FUNCPTR (gst_kms_sink_start);
1886 basesink_class->stop = GST_DEBUG_FUNCPTR (gst_kms_sink_stop);
1887 basesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_kms_sink_set_caps);
1888 basesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_kms_sink_get_caps);
1889 basesink_class->propose_allocation = gst_kms_sink_propose_allocation;
1890 basesink_class->query = gst_kms_sink_query;
1891
1892 videosink_class->show_frame = gst_kms_sink_show_frame;
1893
1894 gobject_class->finalize = gst_kms_sink_finalize;
1895 gobject_class->set_property = gst_kms_sink_set_property;
1896 gobject_class->get_property = gst_kms_sink_get_property;
1897
1898 /**
1899 * kmssink:driver-name:
1900 *
1901 * If you have a system with multiple GPUs, you can choose which GPU
1902 * to use setting the DRM device driver name. Otherwise, the first
1903 * one from an internal list is used.
1904 */
1905 g_properties[PROP_DRIVER_NAME] = g_param_spec_string ("driver-name",
1906 "device name", "DRM device driver name", NULL,
1907 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
1908
1909 /**
1910 * kmssink:bus-id:
1911 *
1912 * If you have a system with multiple displays for the same driver-name,
1913 * you can choose which display to use by setting the DRM bus ID. Otherwise,
1914 * the driver decides which one.
1915 */
1916 g_properties[PROP_BUS_ID] = g_param_spec_string ("bus-id",
1917 "Bus ID", "DRM bus ID", NULL,
1918 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
1919
1920 /**
1921 * kmssink:connector-id:
1922 *
1923 * A GPU has several output connectors, for example: LVDS, VGA,
1924 * HDMI, etc. By default the first LVDS is tried, then the first
1925 * eDP, and at the end, the first connected one.
1926 */
1927 g_properties[PROP_CONNECTOR_ID] = g_param_spec_int ("connector-id",
1928 "Connector ID", "DRM connector id", -1, G_MAXINT32, -1,
1929 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
1930
1931 /**
1932 * kmssink:plane-id:
1933 *
1934 * There could be several planes associated with a CRTC.
1935 * By default the first plane that's possible to use with a given
1936 * CRTC is tried.
1937 */
1938 g_properties[PROP_PLANE_ID] = g_param_spec_int ("plane-id",
1939 "Plane ID", "DRM plane id", -1, G_MAXINT32, -1,
1940 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
1941
1942 /**
1943 * kmssink:force-modesetting:
1944 *
1945 * If the output connector is already active, the sink automatically uses an
1946 * overlay plane. Enforce mode setting in the kms sink and output to the
1947 * base plane to override the automatic behavior.
1948 */
1949 g_properties[PROP_FORCE_MODESETTING] =
1950 g_param_spec_boolean ("force-modesetting", "Force modesetting",
1951 "When enabled, the sink try to configure the display mode", FALSE,
1952 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
1953
1954 /**
1955 * kmssink:restore-crtc:
1956 *
1957 * Restore previous CRTC setting if new CRTC mode was set forcefully.
1958 * By default this is enabled if user set CRTC with a new mode on an already
1959 * active CRTC wich was having a valid mode.
1960 */
1961 g_properties[PROP_RESTORE_CRTC] =
1962 g_param_spec_boolean ("restore-crtc", "Restore CRTC mode",
1963 "When enabled and CRTC was set with a new mode, previous CRTC mode will"
1964 "be restored when going to NULL state.", TRUE,
1965 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
1966
1967 /**
1968 * kmssink:can-scale:
1969 *
1970 * User can tell kmssink if the driver can support scale.
1971 */
1972 g_properties[PROP_CAN_SCALE] =
1973 g_param_spec_boolean ("can-scale", "can scale",
1974 "User can tell kmssink if the driver can support scale", TRUE,
1975 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
1976
1977 /**
1978 * kmssink:display-width
1979 *
1980 * Actual width of the display. This is read only and only available in
1981 * PAUSED and PLAYING state. It's meant to be used with
1982 * gst_video_overlay_set_render_rectangle() function.
1983 */
1984 g_properties[PROP_DISPLAY_WIDTH] =
1985 g_param_spec_int ("display-width", "Display Width",
1986 "Width of the display surface in pixels", 0, G_MAXINT, 0,
1987 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
1988
1989 /**
1990 * kmssink:display-height
1991 *
1992 * Actual height of the display. This is read only and only available in
1993 * PAUSED and PLAYING state. It's meant to be used with
1994 * gst_video_overlay_set_render_rectangle() function.
1995 */
1996 g_properties[PROP_DISPLAY_HEIGHT] =
1997 g_param_spec_int ("display-height", "Display Height",
1998 "Height of the display surface in pixels", 0, G_MAXINT, 0,
1999 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
2000
2001 /**
2002 * kmssink:connector-properties:
2003 *
2004 * Additional properties for the connector. Keys are strings and values
2005 * unsigned 64 bits integers.
2006 *
2007 * Since: 1.16
2008 */
2009 g_properties[PROP_CONNECTOR_PROPS] =
2010 g_param_spec_boxed ("connector-properties", "Connector Properties",
2011 "Additionnal properties for the connector",
2012 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
2013
2014 /**
2015 * kmssink:plane-properties:
2016 *
2017 * Additional properties for the plane. Keys are strings and values
2018 * unsigned 64 bits integers.
2019 *
2020 * Since: 1.16
2021 */
2022 g_properties[PROP_PLANE_PROPS] =
2023 g_param_spec_boxed ("plane-properties", "Connector Plane",
2024 "Additionnal properties for the plane",
2025 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
2026
2027 g_object_class_install_properties (gobject_class, PROP_N, g_properties);
2028
2029 gst_video_overlay_install_properties (gobject_class, PROP_N);
2030 }
2031
2032 static gboolean
plugin_init(GstPlugin * plugin)2033 plugin_init (GstPlugin * plugin)
2034 {
2035 if (!gst_element_register (plugin, GST_PLUGIN_NAME, GST_RANK_SECONDARY,
2036 GST_TYPE_KMS_SINK))
2037 return FALSE;
2038
2039 return TRUE;
2040 }
2041
2042 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, kms,
2043 GST_PLUGIN_DESC, plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
2044 GST_PACKAGE_ORIGIN)
2045