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gstreamer/sys/kms/gstkmssink.c
Nicolas Dufresne 671d9fed3a kmssink: Do not source using padded width/height 
The width/height from the video meta can be padded width, height. But when
sourcing from padded buffer, we only want to use the valid pixels. This
rectangle is from the crop meta, orther it is deduces from the caps. The width
and height from the caps is save in the parent class, use these instead of the
GstVideoInfo when settting the src rectangle.

This fixes an issue with 1080p video displaying repeated or green at the
padded bottom 8 lines (seen with v4l2codecs).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1580>
2020-09-18 16:26:23 +00:00

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/* GStreamer
*
* Copyright (C) 2016 Igalia
*
* Authors:
* Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
* Javier Martin <javiermartin@by.com.es>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
/**
* SECTION:element-kmssink
* @title: kmssink
* @short_description: A KMS/DRM based video sink
*
* kmssink is a simple video sink that renders video frames directly
* in a plane of a DRM device.
*
* In advance usage, the behaviour of kmssink can be change using the
* supported properties. Note that plane and connectors IDs and properties can
* be enumerated using the modetest command line tool.
*
* ## Example launch line
* |[
* gst-launch-1.0 videotestsrc ! kmssink
* gst-launch-1.0 videotestsrc ! kmssink plane-properties=s,rotation=4
* ]|
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/video/video.h>
#include <gst/video/videooverlay.h>
#include <gst/allocators/gstdmabuf.h>
#include <drm.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_fourcc.h>
#include <string.h>
#include "gstkmssink.h"
#include "gstkmsutils.h"
#include "gstkmsbufferpool.h"
#include "gstkmsallocator.h"
#define GST_PLUGIN_NAME "kmssink"
#define GST_PLUGIN_DESC "Video sink using the Linux kernel mode setting API"
GST_DEBUG_CATEGORY_STATIC (gst_kms_sink_debug);
GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE);
#define GST_CAT_DEFAULT gst_kms_sink_debug
static GstFlowReturn gst_kms_sink_show_frame (GstVideoSink * vsink,
GstBuffer * buf);
static void gst_kms_sink_video_overlay_init (GstVideoOverlayInterface * iface);
static void gst_kms_sink_drain (GstKMSSink * self);
#define parent_class gst_kms_sink_parent_class
G_DEFINE_TYPE_WITH_CODE (GstKMSSink, gst_kms_sink, GST_TYPE_VIDEO_SINK,
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, GST_PLUGIN_NAME, 0,
GST_PLUGIN_DESC);
GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE");
G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
gst_kms_sink_video_overlay_init));
enum
{
PROP_DRIVER_NAME = 1,
PROP_BUS_ID,
PROP_CONNECTOR_ID,
PROP_PLANE_ID,
PROP_FORCE_MODESETTING,
PROP_RESTORE_CRTC,
PROP_CAN_SCALE,
PROP_DISPLAY_WIDTH,
PROP_DISPLAY_HEIGHT,
PROP_CONNECTOR_PROPS,
PROP_PLANE_PROPS,
PROP_N,
};
static GParamSpec *g_properties[PROP_N] = { NULL, };
static void
gst_kms_sink_set_render_rectangle (GstVideoOverlay * overlay,
gint x, gint y, gint width, gint height)
{
GstKMSSink *self = GST_KMS_SINK (overlay);
GST_DEBUG_OBJECT (self, "Setting render rectangle to (%d,%d) %dx%d", x, y,
width, height);
GST_OBJECT_LOCK (self);
if (width == -1 && height == -1) {
x = 0;
y = 0;
width = self->hdisplay;
height = self->vdisplay;
}
if (width <= 0 || height <= 0)
goto done;
self->pending_rect.x = x;
self->pending_rect.y = y;
self->pending_rect.w = width;
self->pending_rect.h = height;
if (self->can_scale ||
(self->render_rect.w == width && self->render_rect.h == height)) {
self->render_rect = self->pending_rect;
} else {
self->reconfigure = TRUE;
GST_DEBUG_OBJECT (self, "Waiting for new caps to apply render rectangle");
}
done:
GST_OBJECT_UNLOCK (self);
}
static void
gst_kms_sink_expose (GstVideoOverlay * overlay)
{
GstKMSSink *self = GST_KMS_SINK (overlay);
GST_DEBUG_OBJECT (overlay, "Expose called by application");
if (!self->can_scale) {
GST_OBJECT_LOCK (self);
if (self->reconfigure) {
GST_OBJECT_UNLOCK (self);
GST_DEBUG_OBJECT (overlay, "Sending a reconfigure event");
gst_pad_push_event (GST_BASE_SINK_PAD (self),
gst_event_new_reconfigure ());
} else {
GST_DEBUG_OBJECT (overlay, "Applying new render rectangle");
/* size of the rectangle does not change, only the (x,y) position changes */
self->render_rect = self->pending_rect;
GST_OBJECT_UNLOCK (self);
}
}
gst_kms_sink_show_frame (GST_VIDEO_SINK (self), NULL);
}
static void
gst_kms_sink_video_overlay_init (GstVideoOverlayInterface * iface)
{
iface->expose = gst_kms_sink_expose;
iface->set_render_rectangle = gst_kms_sink_set_render_rectangle;
}
static int
kms_open (gchar ** driver)
{
static const char *drivers[] = { "i915", "radeon", "nouveau", "vmwgfx",
"exynos", "amdgpu", "imx-drm", "rockchip", "atmel-hlcdc", "msm",
"xlnx", "vc4", "meson", "sun4i-drm", "mxsfb-drm",
"xilinx_drm", /* DEPRECATED. Replaced by xlnx */
};
int i, fd = -1;
for (i = 0; i < G_N_ELEMENTS (drivers); i++) {
fd = drmOpen (drivers[i], NULL);
if (fd >= 0) {
if (driver)
*driver = g_strdup (drivers[i]);
break;
}
}
return fd;
}
static drmModePlane *
find_plane_for_crtc (int fd, drmModeRes * res, drmModePlaneRes * pres,
int crtc_id)
{
drmModePlane *plane;
int i, pipe;
plane = NULL;
pipe = -1;
for (i = 0; i < res->count_crtcs; i++) {
if (crtc_id == res->crtcs[i]) {
pipe = i;
break;
}
}
if (pipe == -1)
return NULL;
for (i = 0; i < pres->count_planes; i++) {
plane = drmModeGetPlane (fd, pres->planes[i]);
if (plane->possible_crtcs & (1 << pipe))
return plane;
drmModeFreePlane (plane);
}
return NULL;
}
static drmModeCrtc *
find_crtc_for_connector (int fd, drmModeRes * res, drmModeConnector * conn,
guint * pipe)
{
int i;
int crtc_id;
drmModeEncoder *enc;
drmModeCrtc *crtc;
guint32 crtcs_for_connector = 0;
crtc_id = -1;
for (i = 0; i < res->count_encoders; i++) {
enc = drmModeGetEncoder (fd, res->encoders[i]);
if (enc) {
if (enc->encoder_id == conn->encoder_id) {
crtc_id = enc->crtc_id;
drmModeFreeEncoder (enc);
break;
}
drmModeFreeEncoder (enc);
}
}
/* If no active crtc was found, pick the first possible crtc */
if (crtc_id == -1) {
for (i = 0; i < conn->count_encoders; i++) {
enc = drmModeGetEncoder (fd, conn->encoders[i]);
crtcs_for_connector |= enc->possible_crtcs;
drmModeFreeEncoder (enc);
}
if (crtcs_for_connector != 0)
crtc_id = res->crtcs[ffs (crtcs_for_connector) - 1];
}
if (crtc_id == -1)
return NULL;
for (i = 0; i < res->count_crtcs; i++) {
crtc = drmModeGetCrtc (fd, res->crtcs[i]);
if (crtc) {
if (crtc_id == crtc->crtc_id) {
if (pipe)
*pipe = i;
return crtc;
}
drmModeFreeCrtc (crtc);
}
}
return NULL;
}
static gboolean
connector_is_used (int fd, drmModeRes * res, drmModeConnector * conn)
{
gboolean result;
drmModeCrtc *crtc;
result = FALSE;
crtc = find_crtc_for_connector (fd, res, conn, NULL);
if (crtc) {
result = crtc->buffer_id != 0;
drmModeFreeCrtc (crtc);
}
return result;
}
static drmModeConnector *
find_used_connector_by_type (int fd, drmModeRes * res, int type)
{
int i;
drmModeConnector *conn;
conn = NULL;
for (i = 0; i < res->count_connectors; i++) {
conn = drmModeGetConnector (fd, res->connectors[i]);
if (conn) {
if ((conn->connector_type == type) && connector_is_used (fd, res, conn))
return conn;
drmModeFreeConnector (conn);
}
}
return NULL;
}
static drmModeConnector *
find_first_used_connector (int fd, drmModeRes * res)
{
int i;
drmModeConnector *conn;
conn = NULL;
for (i = 0; i < res->count_connectors; i++) {
conn = drmModeGetConnector (fd, res->connectors[i]);
if (conn) {
if (connector_is_used (fd, res, conn))
return conn;
drmModeFreeConnector (conn);
}
}
return NULL;
}
static drmModeConnector *
find_main_monitor (int fd, drmModeRes * res)
{
/* Find the LVDS and eDP connectors: those are the main screens. */
static const int priority[] = { DRM_MODE_CONNECTOR_LVDS,
DRM_MODE_CONNECTOR_eDP
};
int i;
drmModeConnector *conn;
conn = NULL;
for (i = 0; !conn && i < G_N_ELEMENTS (priority); i++)
conn = find_used_connector_by_type (fd, res, priority[i]);
/* if we didn't find a connector, grab the first one in use */
if (!conn)
conn = find_first_used_connector (fd, res);
/* if no connector is used, grab the first one */
if (!conn)
conn = drmModeGetConnector (fd, res->connectors[0]);
return conn;
}
static void
log_drm_version (GstKMSSink * self)
{
#ifndef GST_DISABLE_GST_DEBUG
drmVersion *v;
v = drmGetVersion (self->fd);
if (v) {
GST_INFO_OBJECT (self, "DRM v%d.%d.%d [%s — %s — %s]", v->version_major,
v->version_minor, v->version_patchlevel, GST_STR_NULL (v->name),
GST_STR_NULL (v->desc), GST_STR_NULL (v->date));
drmFreeVersion (v);
} else {
GST_WARNING_OBJECT (self, "could not get driver information: %s",
GST_STR_NULL (self->devname));
}
#endif
return;
}
static gboolean
get_drm_caps (GstKMSSink * self)
{
gint ret;
guint64 has_dumb_buffer;
guint64 has_prime;
guint64 has_async_page_flip;
has_dumb_buffer = 0;
ret = drmGetCap (self->fd, DRM_CAP_DUMB_BUFFER, &has_dumb_buffer);
if (ret)
GST_WARNING_OBJECT (self, "could not get dumb buffer capability");
if (has_dumb_buffer == 0) {
GST_ERROR_OBJECT (self, "driver cannot handle dumb buffers");
return FALSE;
}
has_prime = 0;
ret = drmGetCap (self->fd, DRM_CAP_PRIME, &has_prime);
if (ret)
GST_WARNING_OBJECT (self, "could not get prime capability");
else {
self->has_prime_import = (gboolean) (has_prime & DRM_PRIME_CAP_IMPORT);
self->has_prime_export = (gboolean) (has_prime & DRM_PRIME_CAP_EXPORT);
}
has_async_page_flip = 0;
ret = drmGetCap (self->fd, DRM_CAP_ASYNC_PAGE_FLIP, &has_async_page_flip);
if (ret)
GST_WARNING_OBJECT (self, "could not get async page flip capability");
else
self->has_async_page_flip = (gboolean) has_async_page_flip;
GST_INFO_OBJECT (self,
"prime import (%s) / prime export (%s) / async page flip (%s)",
self->has_prime_import ? "✓" : "✗",
self->has_prime_export ? "✓" : "✗",
self->has_async_page_flip ? "✓" : "✗");
return TRUE;
}
static void
ensure_kms_allocator (GstKMSSink * self)
{
if (self->allocator)
return;
self->allocator = gst_kms_allocator_new (self->fd);
}
static gboolean
configure_mode_setting (GstKMSSink * self, GstVideoInfo * vinfo)
{
gboolean ret;
drmModeConnector *conn;
int err;
gint i;
drmModeModeInfo *mode;
guint32 fb_id;
GstKMSMemory *kmsmem;
ret = FALSE;
conn = NULL;
mode = NULL;
kmsmem = NULL;
if (self->conn_id < 0)
goto bail;
GST_INFO_OBJECT (self, "configuring mode setting");
ensure_kms_allocator (self);
kmsmem = (GstKMSMemory *) gst_kms_allocator_bo_alloc (self->allocator, vinfo);
if (!kmsmem)
goto bo_failed;
fb_id = kmsmem->fb_id;
conn = drmModeGetConnector (self->fd, self->conn_id);
if (!conn)
goto connector_failed;
for (i = 0; i < conn->count_modes; i++) {
if (conn->modes[i].vdisplay == GST_VIDEO_INFO_HEIGHT (vinfo) &&
conn->modes[i].hdisplay == GST_VIDEO_INFO_WIDTH (vinfo)) {
mode = &conn->modes[i];
break;
}
}
if (!mode)
goto mode_failed;
err = drmModeSetCrtc (self->fd, self->crtc_id, fb_id, 0, 0,
(uint32_t *) & self->conn_id, 1, mode);
if (err)
goto modesetting_failed;
g_clear_pointer (&self->tmp_kmsmem, gst_memory_unref);
self->tmp_kmsmem = (GstMemory *) kmsmem;
ret = TRUE;
bail:
if (conn)
drmModeFreeConnector (conn);
return ret;
/* ERRORS */
bo_failed:
{
GST_ERROR_OBJECT (self,
"failed to allocate buffer object for mode setting");
goto bail;
}
connector_failed:
{
GST_ERROR_OBJECT (self, "Could not find a valid monitor connector");
goto bail;
}
mode_failed:
{
GST_ERROR_OBJECT (self, "cannot find appropriate mode");
goto bail;
}
modesetting_failed:
{
GST_ERROR_OBJECT (self, "Failed to set mode: %s", g_strerror (errno));
goto bail;
}
}
static gboolean
ensure_allowed_caps (GstKMSSink * self, drmModeConnector * conn,
drmModePlane * plane, drmModeRes * res)
{
GstCaps *out_caps, *tmp_caps, *caps;
int i, j;
GstVideoFormat fmt;
const gchar *format;
drmModeModeInfo *mode;
gint count_modes;
if (self->allowed_caps)
return TRUE;
out_caps = gst_caps_new_empty ();
if (!out_caps)
return FALSE;
if (conn && self->modesetting_enabled)
count_modes = conn->count_modes;
else
count_modes = 1;
for (i = 0; i < count_modes; i++) {
tmp_caps = gst_caps_new_empty ();
if (!tmp_caps)
return FALSE;
mode = NULL;
if (conn && self->modesetting_enabled)
mode = &conn->modes[i];
for (j = 0; j < plane->count_formats; j++) {
fmt = gst_video_format_from_drm (plane->formats[j]);
if (fmt == GST_VIDEO_FORMAT_UNKNOWN) {
GST_INFO_OBJECT (self, "ignoring format %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (plane->formats[j]));
continue;
}
format = gst_video_format_to_string (fmt);
if (mode) {
caps = gst_caps_new_simple ("video/x-raw",
"format", G_TYPE_STRING, format,
"width", G_TYPE_INT, mode->hdisplay,
"height", G_TYPE_INT, mode->vdisplay,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
} else {
caps = gst_caps_new_simple ("video/x-raw",
"format", G_TYPE_STRING, format,
"width", GST_TYPE_INT_RANGE, res->min_width, res->max_width,
"height", GST_TYPE_INT_RANGE, res->min_height, res->max_height,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
}
if (!caps)
continue;
tmp_caps = gst_caps_merge (tmp_caps, caps);
}
out_caps = gst_caps_merge (out_caps, gst_caps_simplify (tmp_caps));
}
if (gst_caps_is_empty (out_caps)) {
GST_DEBUG_OBJECT (self, "allowed caps is empty");
gst_caps_unref (out_caps);
return FALSE;
}
self->allowed_caps = gst_caps_simplify (out_caps);
GST_DEBUG_OBJECT (self, "allowed caps = %" GST_PTR_FORMAT,
self->allowed_caps);
return TRUE;
}
static gboolean
set_drm_property (gint fd, guint32 object, guint32 object_type,
drmModeObjectPropertiesPtr properties, const gchar * prop_name,
guint64 value)
{
guint i;
gboolean ret = FALSE;
for (i = 0; i < properties->count_props && !ret; i++) {
drmModePropertyPtr property;
property = drmModeGetProperty (fd, properties->props[i]);
/* GstStructure parser limits the set of supported character, so we
* replace the invalid characters with '-'. In DRM, this is generally
* replacing spaces into '-'. */
g_strcanon (property->name, G_CSET_a_2_z G_CSET_A_2_Z G_CSET_DIGITS "_",
'-');
GST_LOG ("found property %s (looking for %s)", property->name, prop_name);
if (!strcmp (property->name, prop_name)) {
drmModeObjectSetProperty (fd, object, object_type,
property->prop_id, value);
ret = TRUE;
}
drmModeFreeProperty (property);
}
return ret;
}
typedef struct
{
GstKMSSink *self;
drmModeObjectPropertiesPtr properties;
guint obj_id;
guint obj_type;
const gchar *obj_type_str;
} SetPropsIter;
static gboolean
set_obj_prop (GQuark field_id, const GValue * value, gpointer user_data)
{
SetPropsIter *iter = user_data;
GstKMSSink *self = iter->self;
const gchar *name;
guint64 v;
name = g_quark_to_string (field_id);
if (G_VALUE_HOLDS (value, G_TYPE_INT))
v = g_value_get_int (value);
else if (G_VALUE_HOLDS (value, G_TYPE_UINT))
v = g_value_get_uint (value);
else if (G_VALUE_HOLDS (value, G_TYPE_INT64))
v = g_value_get_int64 (value);
else if (G_VALUE_HOLDS (value, G_TYPE_UINT64))
v = g_value_get_uint64 (value);
else {
GST_WARNING_OBJECT (self,
"'uint64' value expected for control '%s'.", name);
return TRUE;
}
if (set_drm_property (self->fd, iter->obj_id, iter->obj_type,
iter->properties, name, v)) {
GST_DEBUG_OBJECT (self,
"Set %s property '%s' to %" G_GUINT64_FORMAT,
iter->obj_type_str, name, v);
} else {
GST_WARNING_OBJECT (self,
"Failed to set %s property '%s' to %" G_GUINT64_FORMAT,
iter->obj_type_str, name, v);
}
return TRUE;
}
static void
gst_kms_sink_update_properties (SetPropsIter * iter, GstStructure * props)
{
GstKMSSink *self = iter->self;
iter->properties = drmModeObjectGetProperties (self->fd, iter->obj_id,
iter->obj_type);
gst_structure_foreach (props, set_obj_prop, iter);
drmModeFreeObjectProperties (iter->properties);
}
static void
gst_kms_sink_update_connector_properties (GstKMSSink * self)
{
SetPropsIter iter;
if (!self->connector_props)
return;
iter.self = self;
iter.obj_id = self->conn_id;
iter.obj_type = DRM_MODE_OBJECT_CONNECTOR;
iter.obj_type_str = "connector";
gst_kms_sink_update_properties (&iter, self->connector_props);
}
static void
gst_kms_sink_update_plane_properties (GstKMSSink * self)
{
SetPropsIter iter;
if (!self->plane_props)
return;
iter.self = self;
iter.obj_id = self->plane_id;
iter.obj_type = DRM_MODE_OBJECT_PLANE;
iter.obj_type_str = "plane";
gst_kms_sink_update_properties (&iter, self->plane_props);
}
static gboolean
gst_kms_sink_start (GstBaseSink * bsink)
{
GstKMSSink *self;
drmModeRes *res;
drmModeConnector *conn;
drmModeCrtc *crtc;
drmModePlaneRes *pres;
drmModePlane *plane;
gboolean universal_planes;
gboolean ret;
self = GST_KMS_SINK (bsink);
universal_planes = FALSE;
ret = FALSE;
res = NULL;
conn = NULL;
crtc = NULL;
pres = NULL;
plane = NULL;
if (self->devname || self->bus_id)
self->fd = drmOpen (self->devname, self->bus_id);
else
self->fd = kms_open (&self->devname);
if (self->fd < 0)
goto open_failed;
log_drm_version (self);
if (!get_drm_caps (self))
goto bail;
res = drmModeGetResources (self->fd);
if (!res)
goto resources_failed;
if (self->conn_id == -1)
conn = find_main_monitor (self->fd, res);
else
conn = drmModeGetConnector (self->fd, self->conn_id);
if (!conn)
goto connector_failed;
crtc = find_crtc_for_connector (self->fd, res, conn, &self->pipe);
if (!crtc)
goto crtc_failed;
if (!crtc->mode_valid || self->modesetting_enabled) {
GST_DEBUG_OBJECT (self, "enabling modesetting");
self->modesetting_enabled = TRUE;
universal_planes = TRUE;
}
if (crtc->mode_valid && self->modesetting_enabled && self->restore_crtc) {
self->saved_crtc = (drmModeCrtc *) crtc;
}
retry_find_plane:
if (universal_planes &&
drmSetClientCap (self->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1))
goto set_cap_failed;
pres = drmModeGetPlaneResources (self->fd);
if (!pres)
goto plane_resources_failed;
if (self->plane_id == -1)
plane = find_plane_for_crtc (self->fd, res, pres, crtc->crtc_id);
else
plane = drmModeGetPlane (self->fd, self->plane_id);
if (!plane)
goto plane_failed;
if (!ensure_allowed_caps (self, conn, plane, res))
goto allowed_caps_failed;
self->conn_id = conn->connector_id;
self->crtc_id = crtc->crtc_id;
self->plane_id = plane->plane_id;
GST_INFO_OBJECT (self, "connector id = %d / crtc id = %d / plane id = %d",
self->conn_id, self->crtc_id, self->plane_id);
GST_OBJECT_LOCK (self);
self->hdisplay = crtc->mode.hdisplay;
self->vdisplay = crtc->mode.vdisplay;
if (self->render_rect.w == 0 || self->render_rect.h == 0) {
self->render_rect.x = 0;
self->render_rect.y = 0;
self->render_rect.w = self->hdisplay;
self->render_rect.h = self->vdisplay;
}
self->pending_rect = self->render_rect;
GST_OBJECT_UNLOCK (self);
self->buffer_id = crtc->buffer_id;
self->mm_width = conn->mmWidth;
self->mm_height = conn->mmHeight;
GST_INFO_OBJECT (self, "display size: pixels = %dx%d / millimeters = %dx%d",
self->hdisplay, self->vdisplay, self->mm_width, self->mm_height);
self->pollfd.fd = self->fd;
gst_poll_add_fd (self->poll, &self->pollfd);
gst_poll_fd_ctl_read (self->poll, &self->pollfd, TRUE);
g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_WIDTH]);
g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_HEIGHT]);
gst_kms_sink_update_connector_properties (self);
gst_kms_sink_update_plane_properties (self);
ret = TRUE;
bail:
if (plane)
drmModeFreePlane (plane);
if (pres)
drmModeFreePlaneResources (pres);
if (crtc != self->saved_crtc)
drmModeFreeCrtc (crtc);
if (conn)
drmModeFreeConnector (conn);
if (res)
drmModeFreeResources (res);
if (!ret && self->fd >= 0) {
drmClose (self->fd);
self->fd = -1;
}
return ret;
/* ERRORS */
open_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ_WRITE,
("Could not open DRM module %s", GST_STR_NULL (self->devname)),
("reason: %s (%d)", g_strerror (errno), errno));
return FALSE;
}
resources_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("drmModeGetResources failed"),
("reason: %s (%d)", g_strerror (errno), errno));
goto bail;
}
connector_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("Could not find a valid monitor connector"), (NULL));
goto bail;
}
crtc_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("Could not find a crtc for connector"), (NULL));
goto bail;
}
set_cap_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("Could not set universal planes capability bit"), (NULL));
goto bail;
}
plane_resources_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("drmModeGetPlaneResources failed"),
("reason: %s (%d)", g_strerror (errno), errno));
goto bail;
}
plane_failed:
{
if (universal_planes) {
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("Could not find a plane for crtc"), (NULL));
goto bail;
} else {
universal_planes = TRUE;
goto retry_find_plane;
}
}
allowed_caps_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("Could not get allowed GstCaps of device"),
("driver does not provide mode settings configuration"));
goto bail;
}
}
static gboolean
gst_kms_sink_stop (GstBaseSink * bsink)
{
GstKMSSink *self;
int err;
self = GST_KMS_SINK (bsink);
if (self->allocator)
gst_kms_allocator_clear_cache (self->allocator);
gst_buffer_replace (&self->last_buffer, NULL);
gst_caps_replace (&self->allowed_caps, NULL);
gst_object_replace ((GstObject **) & self->pool, NULL);
gst_object_replace ((GstObject **) & self->allocator, NULL);
gst_poll_remove_fd (self->poll, &self->pollfd);
gst_poll_restart (self->poll);
gst_poll_fd_init (&self->pollfd);
if (self->saved_crtc) {
drmModeCrtc *crtc = (drmModeCrtc *) self->saved_crtc;
err = drmModeSetCrtc (self->fd, crtc->crtc_id, crtc->buffer_id, crtc->x,
crtc->y, (uint32_t *) & self->conn_id, 1, &crtc->mode);
if (err)
GST_ERROR_OBJECT (self, "Failed to restore previous CRTC mode: %s",
g_strerror (errno));
drmModeFreeCrtc (crtc);
self->saved_crtc = NULL;
}
if (self->fd >= 0) {
drmClose (self->fd);
self->fd = -1;
}
GST_OBJECT_LOCK (bsink);
self->hdisplay = 0;
self->vdisplay = 0;
self->pending_rect.x = 0;
self->pending_rect.y = 0;
self->pending_rect.w = 0;
self->pending_rect.h = 0;
self->render_rect = self->pending_rect;
GST_OBJECT_UNLOCK (bsink);
g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_WIDTH]);
g_object_notify_by_pspec (G_OBJECT (self), g_properties[PROP_DISPLAY_HEIGHT]);
return TRUE;
}
static GstCaps *
gst_kms_sink_get_allowed_caps (GstKMSSink * self)
{
if (!self->allowed_caps)
return NULL; /* base class will return the template caps */
return gst_caps_ref (self->allowed_caps);
}
static GstCaps *
gst_kms_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstKMSSink *self;
GstCaps *caps, *out_caps;
GstStructure *s;
guint dpy_par_n, dpy_par_d;
self = GST_KMS_SINK (bsink);
caps = gst_kms_sink_get_allowed_caps (self);
if (!caps)
return NULL;
GST_OBJECT_LOCK (self);
if (!self->can_scale) {
out_caps = gst_caps_new_empty ();
gst_video_calculate_device_ratio (self->hdisplay, self->vdisplay,
self->mm_width, self->mm_height, &dpy_par_n, &dpy_par_d);
s = gst_structure_copy (gst_caps_get_structure (caps, 0));
gst_structure_set (s, "width", G_TYPE_INT, self->pending_rect.w,
"height", G_TYPE_INT, self->pending_rect.h,
"pixel-aspect-ratio", GST_TYPE_FRACTION, dpy_par_n, dpy_par_d, NULL);
gst_caps_append_structure (out_caps, s);
out_caps = gst_caps_merge (out_caps, caps);
caps = NULL;
/* enforce our display aspect ratio */
gst_caps_set_simple (out_caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
dpy_par_n, dpy_par_d, NULL);
} else {
out_caps = gst_caps_make_writable (caps);
caps = NULL;
}
GST_OBJECT_UNLOCK (self);
GST_DEBUG_OBJECT (self, "Proposing caps %" GST_PTR_FORMAT, out_caps);
if (filter) {
caps = out_caps;
out_caps = gst_caps_intersect_full (caps, filter, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
}
return out_caps;
}
static GstBufferPool *
gst_kms_sink_create_pool (GstKMSSink * self, GstCaps * caps, gsize size,
gint min)
{
GstBufferPool *pool;
GstStructure *config;
pool = gst_kms_buffer_pool_new ();
if (!pool)
goto pool_failed;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, 0);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
ensure_kms_allocator (self);
gst_buffer_pool_config_set_allocator (config, self->allocator, NULL);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
return pool;
/* ERRORS */
pool_failed:
{
GST_ERROR_OBJECT (self, "failed to create buffer pool");
return NULL;
}
config_failed:
{
GST_ERROR_OBJECT (self, "failed to set config");
gst_object_unref (pool);
return NULL;
}
}
static gboolean
gst_kms_sink_calculate_display_ratio (GstKMSSink * self, GstVideoInfo * vinfo,
gint * scaled_width, gint * scaled_height)
{
guint dar_n, dar_d;
guint video_width, video_height;
guint video_par_n, video_par_d;
guint dpy_par_n, dpy_par_d;
video_width = GST_VIDEO_INFO_WIDTH (vinfo);
video_height = GST_VIDEO_INFO_HEIGHT (vinfo);
video_par_n = GST_VIDEO_INFO_PAR_N (vinfo);
video_par_d = GST_VIDEO_INFO_PAR_D (vinfo);
if (self->can_scale) {
gst_video_calculate_device_ratio (self->hdisplay, self->vdisplay,
self->mm_width, self->mm_height, &dpy_par_n, &dpy_par_d);
} else {
*scaled_width = video_width;
*scaled_height = video_height;
goto out;
}
if (!gst_video_calculate_display_ratio (&dar_n, &dar_d, video_width,
video_height, video_par_n, video_par_d, dpy_par_n, dpy_par_d))
return FALSE;
GST_DEBUG_OBJECT (self, "video calculated display ratio: %d/%d", dar_n,
dar_d);
/* now find a width x height that respects this display ratio.
* prefer those that have one of w/h the same as the incoming video
* using wd / hd = dar_n / dar_d */
/* start with same height, because of interlaced video */
/* check hd / dar_d is an integer scale factor, and scale wd with the PAR */
if (video_height % dar_d == 0) {
GST_DEBUG_OBJECT (self, "keeping video height");
*scaled_width = (guint)
gst_util_uint64_scale_int (video_height, dar_n, dar_d);
*scaled_height = video_height;
} else if (video_width % dar_n == 0) {
GST_DEBUG_OBJECT (self, "keeping video width");
*scaled_width = video_width;
*scaled_height = (guint)
gst_util_uint64_scale_int (video_width, dar_d, dar_n);
} else {
GST_DEBUG_OBJECT (self, "approximating while keeping video height");
*scaled_width = (guint)
gst_util_uint64_scale_int (video_height, dar_n, dar_d);
*scaled_height = video_height;
}
out:
GST_DEBUG_OBJECT (self, "scaling to %dx%d", *scaled_width, *scaled_height);
return TRUE;
}
static gboolean
gst_kms_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstKMSSink *self;
GstVideoInfo vinfo;
self = GST_KMS_SINK (bsink);
if (!gst_video_info_from_caps (&vinfo, caps))
goto invalid_format;
self->vinfo = vinfo;
if (!gst_kms_sink_calculate_display_ratio (self, &vinfo,
&GST_VIDEO_SINK_WIDTH (self), &GST_VIDEO_SINK_HEIGHT (self)))
goto no_disp_ratio;
if (GST_VIDEO_SINK_WIDTH (self) <= 0 || GST_VIDEO_SINK_HEIGHT (self) <= 0)
goto invalid_size;
/* discard dumb buffer pool */
if (self->pool) {
gst_buffer_pool_set_active (self->pool, FALSE);
gst_object_unref (self->pool);
self->pool = NULL;
}
if (self->modesetting_enabled && !configure_mode_setting (self, &vinfo))
goto modesetting_failed;
GST_OBJECT_LOCK (self);
if (self->reconfigure) {
self->reconfigure = FALSE;
self->render_rect = self->pending_rect;
}
GST_OBJECT_UNLOCK (self);
GST_DEBUG_OBJECT (self, "negotiated caps = %" GST_PTR_FORMAT, caps);
return TRUE;
/* ERRORS */
invalid_format:
{
GST_ERROR_OBJECT (self, "caps invalid");
return FALSE;
}
invalid_size:
{
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
("Invalid image size."));
return FALSE;
}
no_disp_ratio:
{
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
("Error calculating the output display ratio of the video."));
return FALSE;
}
modesetting_failed:
{
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
("failed to configure video mode"));
return FALSE;
}
}
static gboolean
gst_kms_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstKMSSink *self;
GstCaps *caps;
gboolean need_pool;
GstVideoInfo vinfo;
GstBufferPool *pool;
gsize size;
self = GST_KMS_SINK (bsink);
GST_DEBUG_OBJECT (self, "propose allocation");
gst_query_parse_allocation (query, &caps, &need_pool);
if (!caps)
goto no_caps;
if (!gst_video_info_from_caps (&vinfo, caps))
goto invalid_caps;
size = GST_VIDEO_INFO_SIZE (&vinfo);
pool = NULL;
if (need_pool) {
pool = gst_kms_sink_create_pool (self, caps, size, 0);
if (!pool)
goto no_pool;
/* Only export for pool used upstream */
if (self->has_prime_export) {
GstStructure *config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_KMS_PRIME_EXPORT);
gst_buffer_pool_set_config (pool, config);
}
}
/* we need at least 2 buffer because we hold on to the last one */
gst_query_add_allocation_pool (query, pool, size, 2, 0);
if (pool)
gst_object_unref (pool);
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE, NULL);
return TRUE;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (bsink, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (bsink, "invalid caps specified");
return FALSE;
}
no_pool:
{
/* Already warned in create_pool */
return FALSE;
}
}
static void
sync_handler (gint fd, guint frame, guint sec, guint usec, gpointer data)
{
gboolean *waiting;
waiting = data;
*waiting = FALSE;
}
static gboolean
gst_kms_sink_sync (GstKMSSink * self)
{
gint ret;
gboolean waiting;
drmEventContext evctxt = {
.version = DRM_EVENT_CONTEXT_VERSION,
.page_flip_handler = sync_handler,
.vblank_handler = sync_handler,
};
drmVBlank vbl = {
.request = {
.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT,
.sequence = 1,
.signal = (gulong) & waiting,
},
};
if (self->pipe == 1)
vbl.request.type |= DRM_VBLANK_SECONDARY;
else if (self->pipe > 1)
vbl.request.type |= self->pipe << DRM_VBLANK_HIGH_CRTC_SHIFT;
waiting = TRUE;
if (!self->has_async_page_flip && !self->modesetting_enabled) {
ret = drmWaitVBlank (self->fd, &vbl);
if (ret)
goto vblank_failed;
} else {
ret = drmModePageFlip (self->fd, self->crtc_id, self->buffer_id,
DRM_MODE_PAGE_FLIP_EVENT, &waiting);
if (ret)
goto pageflip_failed;
}
while (waiting) {
do {
ret = gst_poll_wait (self->poll, 3 * GST_SECOND);
} while (ret == -1 && (errno == EAGAIN || errno == EINTR));
ret = drmHandleEvent (self->fd, &evctxt);
if (ret)
goto event_failed;
}
return TRUE;
/* ERRORS */
vblank_failed:
{
GST_WARNING_OBJECT (self, "drmWaitVBlank failed: %s (%d)",
g_strerror (errno), errno);
return FALSE;
}
pageflip_failed:
{
GST_WARNING_OBJECT (self, "drmModePageFlip failed: %s (%d)",
g_strerror (errno), errno);
return FALSE;
}
event_failed:
{
GST_ERROR_OBJECT (self, "drmHandleEvent failed: %s (%d)",
g_strerror (errno), errno);
return FALSE;
}
}
static gboolean
gst_kms_sink_import_dmabuf (GstKMSSink * self, GstBuffer * inbuf,
GstBuffer ** outbuf)
{
gint prime_fds[GST_VIDEO_MAX_PLANES] = { 0, };
GstVideoMeta *meta;
guint i, n_mem, n_planes;
GstKMSMemory *kmsmem;
guint mems_idx[GST_VIDEO_MAX_PLANES];
gsize mems_skip[GST_VIDEO_MAX_PLANES];
GstMemory *mems[GST_VIDEO_MAX_PLANES];
if (!self->has_prime_import)
return FALSE;
/* This will eliminate most non-dmabuf out there */
if (!gst_is_dmabuf_memory (gst_buffer_peek_memory (inbuf, 0)))
return FALSE;
n_planes = GST_VIDEO_INFO_N_PLANES (&self->vinfo);
n_mem = gst_buffer_n_memory (inbuf);
meta = gst_buffer_get_video_meta (inbuf);
GST_TRACE_OBJECT (self, "Found a dmabuf with %u planes and %u memories",
n_planes, n_mem);
/* We cannot have multiple dmabuf per plane */
if (n_mem > n_planes)
return FALSE;
g_assert (n_planes != 0);
/* Update video info based on video meta */
if (meta) {
GST_VIDEO_INFO_WIDTH (&self->vinfo) = meta->width;
GST_VIDEO_INFO_HEIGHT (&self->vinfo) = meta->height;
for (i = 0; i < meta->n_planes; i++) {
GST_VIDEO_INFO_PLANE_OFFSET (&self->vinfo, i) = meta->offset[i];
GST_VIDEO_INFO_PLANE_STRIDE (&self->vinfo, i) = meta->stride[i];
}
}
/* Find and validate all memories */
for (i = 0; i < n_planes; i++) {
guint length;
if (!gst_buffer_find_memory (inbuf,
GST_VIDEO_INFO_PLANE_OFFSET (&self->vinfo, i), 1,
&mems_idx[i], &length, &mems_skip[i]))
return FALSE;
mems[i] = gst_buffer_peek_memory (inbuf, mems_idx[i]);
/* adjust for memory offset, in case data does not
* start from byte 0 in the dmabuf fd */
mems_skip[i] += mems[i]->offset;
/* And all memory found must be dmabuf */
if (!gst_is_dmabuf_memory (mems[i]))
return FALSE;
}
ensure_kms_allocator (self);
kmsmem = (GstKMSMemory *) gst_kms_allocator_get_cached (mems[0]);
if (kmsmem) {
GST_LOG_OBJECT (self, "found KMS mem %p in DMABuf mem %p with fb id = %d",
kmsmem, mems[0], kmsmem->fb_id);
goto wrap_mem;
}
for (i = 0; i < n_planes; i++)
prime_fds[i] = gst_dmabuf_memory_get_fd (mems[i]);
GST_LOG_OBJECT (self, "found these prime ids: %d, %d, %d, %d", prime_fds[0],
prime_fds[1], prime_fds[2], prime_fds[3]);
kmsmem = gst_kms_allocator_dmabuf_import (self->allocator,
prime_fds, n_planes, mems_skip, &self->vinfo);
if (!kmsmem)
return FALSE;
GST_LOG_OBJECT (self, "setting KMS mem %p to DMABuf mem %p with fb id = %d",
kmsmem, mems[0], kmsmem->fb_id);
gst_kms_allocator_cache (self->allocator, mems[0], GST_MEMORY_CAST (kmsmem));
wrap_mem:
*outbuf = gst_buffer_new ();
if (!*outbuf)
return FALSE;
gst_buffer_append_memory (*outbuf, gst_memory_ref (GST_MEMORY_CAST (kmsmem)));
gst_buffer_add_parent_buffer_meta (*outbuf, inbuf);
return TRUE;
}
static gboolean
ensure_internal_pool (GstKMSSink * self, GstVideoInfo * in_vinfo,
GstBuffer * inbuf)
{
GstBufferPool *pool;
GstVideoInfo vinfo = *in_vinfo;
GstVideoMeta *vmeta;
GstCaps *caps;
if (self->pool)
return TRUE;
/* When cropping, the caps matches the cropped rectangle width/height, but
* we can retrieve the padded width/height from the VideoMeta (which is kept
* intact when adding crop meta */
if ((vmeta = gst_buffer_get_video_meta (inbuf))) {
vinfo.width = vmeta->width;
vinfo.height = vmeta->height;
}
caps = gst_video_info_to_caps (&vinfo);
pool = gst_kms_sink_create_pool (self, caps, gst_buffer_get_size (inbuf), 2);
gst_caps_unref (caps);
if (!pool)
return FALSE;
if (!gst_buffer_pool_set_active (pool, TRUE))
goto activate_pool_failed;
self->pool = pool;
return TRUE;
activate_pool_failed:
{
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("failed to activate buffer pool"),
("failed to activate buffer pool"));
gst_object_unref (pool);
return FALSE;
}
}
static GstBuffer *
gst_kms_sink_copy_to_dumb_buffer (GstKMSSink * self, GstVideoInfo * vinfo,
GstBuffer * inbuf)
{
GstFlowReturn ret;
GstVideoFrame inframe, outframe;
gboolean success;
GstBuffer *buf = NULL;
if (!ensure_internal_pool (self, vinfo, inbuf))
goto bail;
ret = gst_buffer_pool_acquire_buffer (self->pool, &buf, NULL);
if (ret != GST_FLOW_OK)
goto create_buffer_failed;
if (!gst_video_frame_map (&inframe, vinfo, inbuf, GST_MAP_READ))
goto error_map_src_buffer;
if (!gst_video_frame_map (&outframe, vinfo, buf, GST_MAP_WRITE))
goto error_map_dst_buffer;
success = gst_video_frame_copy (&outframe, &inframe);
gst_video_frame_unmap (&outframe);
gst_video_frame_unmap (&inframe);
if (!success)
goto error_copy_buffer;
return buf;
bail:
{
if (buf)
gst_buffer_unref (buf);
return NULL;
}
/* ERRORS */
create_buffer_failed:
{
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("allocation failed"),
("failed to create buffer"));
return NULL;
}
error_copy_buffer:
{
GST_WARNING_OBJECT (self, "failed to upload buffer");
goto bail;
}
error_map_dst_buffer:
{
gst_video_frame_unmap (&inframe);
/* fall-through */
}
error_map_src_buffer:
{
GST_WARNING_OBJECT (self, "failed to map buffer");
goto bail;
}
}
static GstBuffer *
gst_kms_sink_get_input_buffer (GstKMSSink * self, GstBuffer * inbuf)
{
GstMemory *mem;
GstBuffer *buf = NULL;
mem = gst_buffer_peek_memory (inbuf, 0);
if (!mem)
return NULL;
if (gst_is_kms_memory (mem))
return gst_buffer_ref (inbuf);
if (gst_kms_sink_import_dmabuf (self, inbuf, &buf))
goto done;
GST_CAT_INFO_OBJECT (CAT_PERFORMANCE, self, "frame copy");
buf = gst_kms_sink_copy_to_dumb_buffer (self, &self->vinfo, inbuf);
done:
/* Copy all the non-memory related metas, this way CropMeta will be
* available upon GstVideoOverlay::expose calls. */
if (buf)
gst_buffer_copy_into (buf, inbuf, GST_BUFFER_COPY_METADATA, 0, -1);
return buf;
}
static GstFlowReturn
gst_kms_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
{
gint ret;
GstBuffer *buffer = NULL;
guint32 fb_id;
GstKMSSink *self;
GstVideoInfo *vinfo;
GstVideoCropMeta *crop;
GstVideoRectangle src = { 0, };
gint video_width, video_height;
GstVideoRectangle dst = { 0, };
GstVideoRectangle result;
GstFlowReturn res;
self = GST_KMS_SINK (vsink);
res = GST_FLOW_ERROR;
if (buf) {
buffer = gst_kms_sink_get_input_buffer (self, buf);
vinfo = &self->vinfo;
video_width = src.w = GST_VIDEO_SINK_WIDTH (self);
video_height = src.h = GST_VIDEO_SINK_HEIGHT (self);
} else if (self->last_buffer) {
buffer = gst_buffer_ref (self->last_buffer);
vinfo = &self->last_vinfo;
video_width = src.w = self->last_width;
video_height = src.h = self->last_height;
}
/* Make sure buf is not used accidentally */
buf = NULL;
if (!buffer)
return GST_FLOW_ERROR;
fb_id = gst_kms_memory_get_fb_id (gst_buffer_peek_memory (buffer, 0));
if (fb_id == 0)
goto buffer_invalid;
GST_TRACE_OBJECT (self, "displaying fb %d", fb_id);
GST_OBJECT_LOCK (self);
if (self->modesetting_enabled) {
self->buffer_id = fb_id;
goto sync_frame;
}
if ((crop = gst_buffer_get_video_crop_meta (buffer))) {
GstVideoInfo cropped_vinfo = *vinfo;
cropped_vinfo.width = crop->width;
cropped_vinfo.height = crop->height;
if (!gst_kms_sink_calculate_display_ratio (self, &cropped_vinfo, &src.w,
&src.h))
goto no_disp_ratio;
src.x = crop->x;
src.y = crop->y;
}
dst.w = self->render_rect.w;
dst.h = self->render_rect.h;
retry_set_plane:
gst_video_sink_center_rect (src, dst, &result, self->can_scale);
result.x += self->render_rect.x;
result.y += self->render_rect.y;
if (crop) {
src.w = crop->width;
src.h = crop->height;
} else {
src.w = video_width;
src.h = video_height;
}
/* handle out of screen case */
if ((result.x + result.w) > self->hdisplay)
result.w = self->hdisplay - result.x;
if ((result.y + result.h) > self->vdisplay)
result.h = self->vdisplay - result.y;
if (result.w <= 0 || result.h <= 0) {
GST_WARNING_OBJECT (self, "video is out of display range");
goto sync_frame;
}
/* to make sure it can be show when driver don't support scale */
if (!self->can_scale) {
src.w = result.w;
src.h = result.h;
}
GST_TRACE_OBJECT (self,
"drmModeSetPlane at (%i,%i) %ix%i sourcing at (%i,%i) %ix%i",
result.x, result.y, result.w, result.h, src.x, src.y, src.w, src.h);
ret = drmModeSetPlane (self->fd, self->plane_id, self->crtc_id, fb_id, 0,
result.x, result.y, result.w, result.h,
/* source/cropping coordinates are given in Q16 */
src.x << 16, src.y << 16, src.w << 16, src.h << 16);
if (ret) {
if (self->can_scale) {
self->can_scale = FALSE;
goto retry_set_plane;
}
goto set_plane_failed;
}
sync_frame:
/* Wait for the previous frame to complete redraw */
if (!gst_kms_sink_sync (self)) {
GST_OBJECT_UNLOCK (self);
goto bail;
}
/* Save the rendered buffer and its metadata in case a redraw is needed */
if (buffer != self->last_buffer) {
gst_buffer_replace (&self->last_buffer, buffer);
self->last_width = GST_VIDEO_SINK_WIDTH (self);
self->last_height = GST_VIDEO_SINK_HEIGHT (self);
self->last_vinfo = self->vinfo;
}
g_clear_pointer (&self->tmp_kmsmem, gst_memory_unref);
GST_OBJECT_UNLOCK (self);
res = GST_FLOW_OK;
bail:
gst_buffer_unref (buffer);
return res;
/* ERRORS */
buffer_invalid:
{
GST_ERROR_OBJECT (self, "invalid buffer: it doesn't have a fb id");
goto bail;
}
set_plane_failed:
{
GST_OBJECT_UNLOCK (self);
GST_DEBUG_OBJECT (self, "result = { %d, %d, %d, %d} / "
"src = { %d, %d, %d %d } / dst = { %d, %d, %d %d }", result.x, result.y,
result.w, result.h, src.x, src.y, src.w, src.h, dst.x, dst.y, dst.w,
dst.h);
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
(NULL), ("drmModeSetPlane failed: %s (%d)", g_strerror (errno), errno));
goto bail;
}
no_disp_ratio:
{
GST_OBJECT_UNLOCK (self);
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
("Error calculating the output display ratio of the video."));
goto bail;
}
}
static void
gst_kms_sink_drain (GstKMSSink * self)
{
GstParentBufferMeta *parent_meta;
if (!self->last_buffer)
return;
/* We only need to return the last_buffer if it depends on upstream buffer.
* In this case, the last_buffer will have a GstParentBufferMeta set. */
parent_meta = gst_buffer_get_parent_buffer_meta (self->last_buffer);
if (parent_meta) {
GstBuffer *dumb_buf, *last_buf;
/* If this was imported from our dumb buffer pool we can safely skip the
* drain */
if (parent_meta->buffer->pool &&
GST_IS_KMS_BUFFER_POOL (parent_meta->buffer->pool))
return;
GST_DEBUG_OBJECT (self, "draining");
dumb_buf = gst_kms_sink_copy_to_dumb_buffer (self, &self->last_vinfo,
parent_meta->buffer);
last_buf = self->last_buffer;
self->last_buffer = dumb_buf;
gst_kms_allocator_clear_cache (self->allocator);
gst_kms_sink_show_frame (GST_VIDEO_SINK (self), NULL);
gst_buffer_unref (last_buf);
}
}
static gboolean
gst_kms_sink_query (GstBaseSink * bsink, GstQuery * query)
{
GstKMSSink *self = GST_KMS_SINK (bsink);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ALLOCATION:
case GST_QUERY_DRAIN:
{
gst_kms_sink_drain (self);
break;
}
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
}
static void
gst_kms_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstKMSSink *sink;
sink = GST_KMS_SINK (object);
switch (prop_id) {
case PROP_DRIVER_NAME:
g_free (sink->devname);
sink->devname = g_value_dup_string (value);
break;
case PROP_BUS_ID:
g_free (sink->bus_id);
sink->bus_id = g_value_dup_string (value);
break;
case PROP_CONNECTOR_ID:
sink->conn_id = g_value_get_int (value);
break;
case PROP_PLANE_ID:
sink->plane_id = g_value_get_int (value);
break;
case PROP_FORCE_MODESETTING:
sink->modesetting_enabled = g_value_get_boolean (value);
break;
case PROP_RESTORE_CRTC:
sink->restore_crtc = g_value_get_boolean (value);
break;
case PROP_CAN_SCALE:
sink->can_scale = g_value_get_boolean (value);
break;
case PROP_CONNECTOR_PROPS:{
const GstStructure *s = gst_value_get_structure (value);
g_clear_pointer (&sink->connector_props, gst_structure_free);
if (s)
sink->connector_props = gst_structure_copy (s);
break;
}
case PROP_PLANE_PROPS:{
const GstStructure *s = gst_value_get_structure (value);
g_clear_pointer (&sink->plane_props, gst_structure_free);
if (s)
sink->plane_props = gst_structure_copy (s);
break;
}
default:
if (!gst_video_overlay_set_property (object, PROP_N, prop_id, value))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_kms_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstKMSSink *sink;
sink = GST_KMS_SINK (object);
switch (prop_id) {
case PROP_DRIVER_NAME:
g_value_set_string (value, sink->devname);
break;
case PROP_BUS_ID:
g_value_set_string (value, sink->bus_id);
break;
case PROP_CONNECTOR_ID:
g_value_set_int (value, sink->conn_id);
break;
case PROP_PLANE_ID:
g_value_set_int (value, sink->plane_id);
break;
case PROP_FORCE_MODESETTING:
g_value_set_boolean (value, sink->modesetting_enabled);
break;
case PROP_RESTORE_CRTC:
g_value_set_boolean (value, sink->restore_crtc);
break;
case PROP_CAN_SCALE:
g_value_set_boolean (value, sink->can_scale);
break;
case PROP_DISPLAY_WIDTH:
GST_OBJECT_LOCK (sink);
g_value_set_int (value, sink->hdisplay);
GST_OBJECT_UNLOCK (sink);
break;
case PROP_DISPLAY_HEIGHT:
GST_OBJECT_LOCK (sink);
g_value_set_int (value, sink->vdisplay);
GST_OBJECT_UNLOCK (sink);
break;
case PROP_CONNECTOR_PROPS:
gst_value_set_structure (value, sink->connector_props);
break;
case PROP_PLANE_PROPS:
gst_value_set_structure (value, sink->plane_props);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_kms_sink_finalize (GObject * object)
{
GstKMSSink *sink;
sink = GST_KMS_SINK (object);
g_clear_pointer (&sink->devname, g_free);
g_clear_pointer (&sink->bus_id, g_free);
gst_poll_free (sink->poll);
g_clear_pointer (&sink->connector_props, gst_structure_free);
g_clear_pointer (&sink->plane_props, gst_structure_free);
g_clear_pointer (&sink->tmp_kmsmem, gst_memory_unref);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_kms_sink_init (GstKMSSink * sink)
{
sink->fd = -1;
sink->conn_id = -1;
sink->plane_id = -1;
sink->can_scale = TRUE;
gst_poll_fd_init (&sink->pollfd);
sink->poll = gst_poll_new (TRUE);
gst_video_info_init (&sink->vinfo);
}
static void
gst_kms_sink_class_init (GstKMSSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseSinkClass *basesink_class;
GstVideoSinkClass *videosink_class;
GstCaps *caps;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
basesink_class = GST_BASE_SINK_CLASS (klass);
videosink_class = GST_VIDEO_SINK_CLASS (klass);
gst_element_class_set_static_metadata (element_class, "KMS video sink",
"Sink/Video", GST_PLUGIN_DESC, "Víctor Jáquez <vjaquez@igalia.com>");
caps = gst_kms_sink_caps_template_fill ();
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
gst_caps_unref (caps);
basesink_class->start = GST_DEBUG_FUNCPTR (gst_kms_sink_start);
basesink_class->stop = GST_DEBUG_FUNCPTR (gst_kms_sink_stop);
basesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_kms_sink_set_caps);
basesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_kms_sink_get_caps);
basesink_class->propose_allocation = gst_kms_sink_propose_allocation;
basesink_class->query = gst_kms_sink_query;
videosink_class->show_frame = gst_kms_sink_show_frame;
gobject_class->finalize = gst_kms_sink_finalize;
gobject_class->set_property = gst_kms_sink_set_property;
gobject_class->get_property = gst_kms_sink_get_property;
/**
* kmssink:driver-name:
*
* If you have a system with multiple GPUs, you can choose which GPU
* to use setting the DRM device driver name. Otherwise, the first
* one from an internal list is used.
*/
g_properties[PROP_DRIVER_NAME] = g_param_spec_string ("driver-name",
"device name", "DRM device driver name", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:bus-id:
*
* If you have a system with multiple displays for the same driver-name,
* you can choose which display to use by setting the DRM bus ID. Otherwise,
* the driver decides which one.
*/
g_properties[PROP_BUS_ID] = g_param_spec_string ("bus-id",
"Bus ID", "DRM bus ID", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:connector-id:
*
* A GPU has several output connectors, for example: LVDS, VGA,
* HDMI, etc. By default the first LVDS is tried, then the first
* eDP, and at the end, the first connected one.
*/
g_properties[PROP_CONNECTOR_ID] = g_param_spec_int ("connector-id",
"Connector ID", "DRM connector id", -1, G_MAXINT32, -1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:plane-id:
*
* There could be several planes associated with a CRTC.
* By default the first plane that's possible to use with a given
* CRTC is tried.
*/
g_properties[PROP_PLANE_ID] = g_param_spec_int ("plane-id",
"Plane ID", "DRM plane id", -1, G_MAXINT32, -1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:force-modesetting:
*
* If the output connector is already active, the sink automatically uses an
* overlay plane. Enforce mode setting in the kms sink and output to the
* base plane to override the automatic behavior.
*/
g_properties[PROP_FORCE_MODESETTING] =
g_param_spec_boolean ("force-modesetting", "Force modesetting",
"When enabled, the sink try to configure the display mode", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:restore-crtc:
*
* Restore previous CRTC setting if new CRTC mode was set forcefully.
* By default this is enabled if user set CRTC with a new mode on an already
* active CRTC wich was having a valid mode.
*/
g_properties[PROP_RESTORE_CRTC] =
g_param_spec_boolean ("restore-crtc", "Restore CRTC mode",
"When enabled and CRTC was set with a new mode, previous CRTC mode will"
"be restored when going to NULL state.", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:can-scale:
*
* User can tell kmssink if the driver can support scale.
*/
g_properties[PROP_CAN_SCALE] =
g_param_spec_boolean ("can-scale", "can scale",
"User can tell kmssink if the driver can support scale", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:display-width
*
* Actual width of the display. This is read only and only available in
* PAUSED and PLAYING state. It's meant to be used with
* gst_video_overlay_set_render_rectangle() function.
*/
g_properties[PROP_DISPLAY_WIDTH] =
g_param_spec_int ("display-width", "Display Width",
"Width of the display surface in pixels", 0, G_MAXINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* kmssink:display-height
*
* Actual height of the display. This is read only and only available in
* PAUSED and PLAYING state. It's meant to be used with
* gst_video_overlay_set_render_rectangle() function.
*/
g_properties[PROP_DISPLAY_HEIGHT] =
g_param_spec_int ("display-height", "Display Height",
"Height of the display surface in pixels", 0, G_MAXINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* kmssink:connector-properties:
*
* Additional properties for the connector. Keys are strings and values
* unsigned 64 bits integers.
*
* Since: 1.16
*/
g_properties[PROP_CONNECTOR_PROPS] =
g_param_spec_boxed ("connector-properties", "Connector Properties",
"Additional properties for the connector",
GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
/**
* kmssink:plane-properties:
*
* Additional properties for the plane. Keys are strings and values
* unsigned 64 bits integers.
*
* Since: 1.16
*/
g_properties[PROP_PLANE_PROPS] =
g_param_spec_boxed ("plane-properties", "Connector Plane",
"Additional properties for the plane",
GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, PROP_N, g_properties);
gst_video_overlay_install_properties (gobject_class, PROP_N);
}
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, GST_PLUGIN_NAME, GST_RANK_SECONDARY,
GST_TYPE_KMS_SINK))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, kms,
GST_PLUGIN_DESC, plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)
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