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weston/remoting/remoting-plugin.c

940 lines
24 KiB

/*
* Copyright © 2018 Renesas Electronics Corp.
*
* Based on vaapi-recorder by:
* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors: IGEL Co., Ltd.
*/
#include "config.h"
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <gbm.h>
#include <gst/gst.h>
#include <gst/allocators/gstdmabuf.h>
#include <gst/app/gstappsrc.h>
#include <gst/video/gstvideometa.h>
#include "remoting-plugin.h"
#include <libweston/backend-drm.h>
#include "shared/helpers.h"
#include "shared/timespec-util.h"
#include "libweston-internal.h"
#define MAX_RETRY_COUNT 3
struct weston_remoting {
struct weston_compositor *compositor;
struct wl_list output_list;
struct wl_listener destroy_listener;
const struct weston_drm_virtual_output_api *virtual_output_api;
GstAllocator *allocator;
};
struct remoted_gstpipe {
int readfd;
int writefd;
struct wl_event_source *source;
};
/* supported gbm format list */
struct remoted_output_support_gbm_format {
uint32_t gbm_format;
const char *gst_format_string;
GstVideoFormat gst_video_format;
};
static const struct remoted_output_support_gbm_format supported_formats[] = {
{
.gbm_format = GBM_FORMAT_XRGB8888,
.gst_format_string = "BGRx",
.gst_video_format = GST_VIDEO_FORMAT_BGRx,
}, {
.gbm_format = GBM_FORMAT_RGB565,
.gst_format_string = "RGB16",
.gst_video_format = GST_VIDEO_FORMAT_RGB16,
}, {
.gbm_format = GBM_FORMAT_XRGB2101010,
.gst_format_string = "r210",
.gst_video_format = GST_VIDEO_FORMAT_r210,
}
};
struct remoted_output {
struct weston_output *output;
void (*saved_destroy)(struct weston_output *output);
int (*saved_enable)(struct weston_output *output);
int (*saved_disable)(struct weston_output *output);
int (*saved_start_repaint_loop)(struct weston_output *output);
char *host;
int port;
char *gst_pipeline;
const struct remoted_output_support_gbm_format *format;
struct weston_head *head;
struct weston_remoting *remoting;
struct wl_event_source *finish_frame_timer;
struct wl_list link;
bool submitted_frame;
int fence_sync_fd;
struct wl_event_source *fence_sync_event_source;
GstElement *pipeline;
GstAppSrc *appsrc;
GstBus *bus;
struct remoted_gstpipe gstpipe;
GstClockTime start_time;
int retry_count;
};
struct mem_free_cb_data {
struct remoted_output *output;
struct drm_fb *output_buffer;
};
struct gst_frame_buffer_data {
struct remoted_output *output;
GstBuffer *buffer;
};
/* message type for pipe */
#define GSTPIPE_MSG_BUS_SYNC 1
#define GSTPIPE_MSG_BUFFER_RELEASE 2
struct gstpipe_msg_data {
int type;
void *data;
};
static int
remoting_gst_init(struct weston_remoting *remoting)
{
GError *err = NULL;
if (!gst_init_check(NULL, NULL, &err)) {
weston_log("GStreamer initialization error: %s\n",
err->message);
g_error_free(err);
return -1;
}
remoting->allocator = gst_dmabuf_allocator_new();
return 0;
}
static void
remoting_gst_deinit(struct weston_remoting *remoting)
{
gst_object_unref(remoting->allocator);
}
static GstBusSyncReply
remoting_gst_bus_sync_handler(GstBus *bus, GstMessage *message,
gpointer user_data)
{
struct remoted_gstpipe *pipe = user_data;
struct gstpipe_msg_data msg = {
.type = GSTPIPE_MSG_BUS_SYNC,
.data = NULL
};
ssize_t ret;
ret = write(pipe->writefd, &msg, sizeof(msg));
if (ret != sizeof(msg))
weston_log("ERROR: failed to write, ret=%zd, errno=%d\n",
ret, errno);
return GST_BUS_PASS;
}
static int
remoting_gst_pipeline_init(struct remoted_output *output)
{
GstCaps *caps;
GError *err = NULL;
GstStateChangeReturn ret;
struct weston_mode *mode = output->output->current_mode;
if (!output->gst_pipeline) {
char pipeline_str[1024];
/* TODO: use encodebin instead of jpegenc */
snprintf(pipeline_str, sizeof(pipeline_str),
"rtpbin name=rtpbin "
"appsrc name=src ! videoconvert ! "
"video/x-raw,format=I420 ! jpegenc ! rtpjpegpay ! "
"rtpbin.send_rtp_sink_0 "
"rtpbin.send_rtp_src_0 ! "
"udpsink name=sink host=%s port=%d "
"rtpbin.send_rtcp_src_0 ! "
"udpsink host=%s port=%d sync=false async=false "
"udpsrc port=%d ! rtpbin.recv_rtcp_sink_0",
output->host, output->port, output->host,
output->port + 1, output->port + 2);
output->gst_pipeline = strdup(pipeline_str);
}
weston_log("GST pipeline: %s\n", output->gst_pipeline);
output->pipeline = gst_parse_launch(output->gst_pipeline, &err);
if (!output->pipeline) {
weston_log("Could not create gstreamer pipeline. Error: %s\n",
err->message);
g_error_free(err);
return -1;
}
output->appsrc = (GstAppSrc*)
gst_bin_get_by_name(GST_BIN(output->pipeline), "src");
if (!output->appsrc) {
weston_log("Could not get appsrc from gstreamer pipeline\n");
goto err;
}
/* check sink */
if (!gst_bin_get_by_name(GST_BIN(output->pipeline), "sink")) {
weston_log("Could not get sink from gstreamer pipeline\n");
goto err;
}
caps = gst_caps_new_simple("video/x-raw",
"format", G_TYPE_STRING,
output->format->gst_format_string,
"width", G_TYPE_INT, mode->width,
"height", G_TYPE_INT, mode->height,
"framerate", GST_TYPE_FRACTION,
mode->refresh, 1000,
NULL);
if (!caps) {
weston_log("Could not create gstreamer caps.\n");
goto err;
}
g_object_set(G_OBJECT(output->appsrc),
"caps", caps,
"stream-type", 0,
"format", GST_FORMAT_TIME,
"is-live", TRUE,
NULL);
gst_caps_unref(caps);
output->bus = gst_pipeline_get_bus(GST_PIPELINE(output->pipeline));
if (!output->bus) {
weston_log("Could not get bus from gstreamer pipeline\n");
goto err;
}
gst_bus_set_sync_handler(output->bus, remoting_gst_bus_sync_handler,
&output->gstpipe, NULL);
output->start_time = 0;
ret = gst_element_set_state(output->pipeline, GST_STATE_PLAYING);
if (ret == GST_STATE_CHANGE_FAILURE) {
weston_log("Couldn't set GST_STATE_PLAYING to pipeline\n");
goto err;
}
return 0;
err:
gst_object_unref(GST_OBJECT(output->pipeline));
output->pipeline = NULL;
return -1;
}
static void
remoting_gst_pipeline_deinit(struct remoted_output *output)
{
if (!output->pipeline)
return;
gst_element_set_state(output->pipeline, GST_STATE_NULL);
if (output->bus)
gst_object_unref(GST_OBJECT(output->bus));
gst_object_unref(GST_OBJECT(output->pipeline));
output->pipeline = NULL;
}
static int
remoting_output_disable(struct weston_output *output);
static void
remoting_gst_restart(void *data)
{
struct remoted_output *output = data;
if (remoting_gst_pipeline_init(output) < 0) {
weston_log("gst: Could not restart pipeline!!\n");
remoting_output_disable(output->output);
}
}
static void
remoting_gst_schedule_restart(struct remoted_output *output)
{
struct wl_event_loop *loop;
struct weston_compositor *c = output->remoting->compositor;
loop = wl_display_get_event_loop(c->wl_display);
wl_event_loop_add_idle(loop, remoting_gst_restart, output);
}
static void
remoting_gst_bus_message_handler(struct remoted_output *output)
{
GstMessage *message;
GError *error;
gchar *debug;
/* get message from bus queue */
message = gst_bus_pop(output->bus);
if (!message)
return;
switch (GST_MESSAGE_TYPE(message)) {
case GST_MESSAGE_STATE_CHANGED: {
GstState new_state;
gst_message_parse_state_changed(message, NULL, &new_state,
NULL);
if (!strcmp(GST_OBJECT_NAME(message->src), "sink") &&
new_state == GST_STATE_PLAYING)
output->retry_count = 0;
break;
}
case GST_MESSAGE_WARNING:
gst_message_parse_warning(message, &error, &debug);
weston_log("gst: Warning: %s: %s\n",
GST_OBJECT_NAME(message->src), error->message);
break;
case GST_MESSAGE_ERROR:
gst_message_parse_error(message, &error, &debug);
weston_log("gst: Error: %s: %s\n",
GST_OBJECT_NAME(message->src), error->message);
if (output->retry_count < MAX_RETRY_COUNT) {
output->retry_count++;
remoting_gst_pipeline_deinit(output);
remoting_gst_schedule_restart(output);
} else {
remoting_output_disable(output->output);
}
break;
default:
break;
}
}
static void
remoting_output_buffer_release(struct remoted_output *output, void *buffer)
{
const struct weston_drm_virtual_output_api *api
= output->remoting->virtual_output_api;
api->buffer_released(buffer);
}
static int
remoting_gstpipe_handler(int fd, uint32_t mask, void *data)
{
ssize_t ret;
struct gstpipe_msg_data msg;
struct remoted_output *output = data;
/* receive message */
ret = read(fd, &msg, sizeof(msg));
if (ret != sizeof(msg)) {
weston_log("ERROR: failed to read, ret=%zd, errno=%d\n",
ret, errno);
remoting_output_disable(output->output);
return 0;
}
switch (msg.type) {
case GSTPIPE_MSG_BUS_SYNC:
remoting_gst_bus_message_handler(output);
break;
case GSTPIPE_MSG_BUFFER_RELEASE:
remoting_output_buffer_release(output, msg.data);
break;
default:
weston_log("Received unknown message! msg=%d\n", msg.type);
}
return 1;
}
static int
remoting_gstpipe_init(struct weston_compositor *c,
struct remoted_output *output)
{
struct wl_event_loop *loop;
int fd[2];
if (pipe2(fd, O_CLOEXEC) == -1)
return -1;
output->gstpipe.readfd = fd[0];
output->gstpipe.writefd = fd[1];
loop = wl_display_get_event_loop(c->wl_display);
output->gstpipe.source =
wl_event_loop_add_fd(loop, output->gstpipe.readfd,
WL_EVENT_READABLE,
remoting_gstpipe_handler, output);
if (!output->gstpipe.source) {
close(fd[0]);
close(fd[1]);
return -1;
}
return 0;
}
static void
remoting_gstpipe_release(struct remoted_gstpipe *pipe)
{
wl_event_source_remove(pipe->source);
close(pipe->readfd);
close(pipe->writefd);
}
static void
remoting_output_destroy(struct weston_output *output);
static void
weston_remoting_destroy(struct wl_listener *l, void *data)
{
struct weston_remoting *remoting =
container_of(l, struct weston_remoting, destroy_listener);
struct remoted_output *output, *next;
wl_list_for_each_safe(output, next, &remoting->output_list, link)
remoting_output_destroy(output->output);
/* Finalize gstreamer */
remoting_gst_deinit(remoting);
wl_list_remove(&remoting->destroy_listener.link);
free(remoting);
}
static struct weston_remoting *
weston_remoting_get(struct weston_compositor *compositor)
{
struct wl_listener *listener;
struct weston_remoting *remoting;
listener = wl_signal_get(&compositor->destroy_signal,
weston_remoting_destroy);
if (!listener)
return NULL;
remoting = wl_container_of(listener, remoting, destroy_listener);
return remoting;
}
static int
remoting_output_finish_frame_handler(void *data)
{
struct remoted_output *output = data;
const struct weston_drm_virtual_output_api *api
= output->remoting->virtual_output_api;
struct timespec now;
int64_t msec;
if (output->submitted_frame) {
struct weston_compositor *c = output->remoting->compositor;
output->submitted_frame = false;
weston_compositor_read_presentation_clock(c, &now);
api->finish_frame(output->output, &now, 0);
}
msec = millihz_to_nsec(output->output->current_mode->refresh) / 1000000;
wl_event_source_timer_update(output->finish_frame_timer, msec);
return 0;
}
static void
remoting_gst_mem_free_cb(struct mem_free_cb_data *cb_data, GstMiniObject *obj)
{
struct remoted_output *output = cb_data->output;
struct remoted_gstpipe *pipe = &output->gstpipe;
struct gstpipe_msg_data msg = {
.type = GSTPIPE_MSG_BUFFER_RELEASE,
.data = cb_data->output_buffer
};
ssize_t ret;
ret = write(pipe->writefd, &msg, sizeof(msg));
if (ret != sizeof(msg))
weston_log("ERROR: failed to write, ret=%zd, errno=%d\n", ret,
errno);
free(cb_data);
}
static struct remoted_output *
lookup_remoted_output(struct weston_output *output)
{
struct weston_compositor *c = output->compositor;
struct weston_remoting *remoting = weston_remoting_get(c);
struct remoted_output *remoted_output;
wl_list_for_each(remoted_output, &remoting->output_list, link) {
if (remoted_output->output == output)
return remoted_output;
}
weston_log("%s: %s: could not find output\n", __FILE__, __func__);
return NULL;
}
static void
remoting_output_gst_push_buffer(struct remoted_output *output,
GstBuffer *buffer)
{
struct timespec current_frame_ts;
GstClockTime ts, current_frame_time;
weston_compositor_read_presentation_clock(output->remoting->compositor,
&current_frame_ts);
current_frame_time = GST_TIMESPEC_TO_TIME(current_frame_ts);
if (output->start_time == 0)
output->start_time = current_frame_time;
ts = current_frame_time - output->start_time;
if (GST_CLOCK_TIME_IS_VALID(ts))
GST_BUFFER_PTS(buffer) = ts;
else
GST_BUFFER_PTS(buffer) = GST_CLOCK_TIME_NONE;
GST_BUFFER_DURATION(buffer) = GST_CLOCK_TIME_NONE;
gst_app_src_push_buffer(output->appsrc, buffer);
output->submitted_frame = true;
}
static int
remoting_output_fence_sync_handler(int fd, uint32_t mask, void *data)
{
struct gst_frame_buffer_data *frame_data = data;
struct remoted_output *output = frame_data->output;
remoting_output_gst_push_buffer(output, frame_data->buffer);
wl_event_source_remove(output->fence_sync_event_source);
close(output->fence_sync_fd);
free(frame_data);
return 0;
}
static int
remoting_output_frame(struct weston_output *output_base, int fd, int stride,
struct drm_fb *output_buffer)
{
struct remoted_output *output = lookup_remoted_output(output_base);
struct weston_remoting *remoting = output->remoting;
struct weston_mode *mode;
const struct weston_drm_virtual_output_api *api
= output->remoting->virtual_output_api;
struct wl_event_loop *loop;
GstBuffer *buf;
GstMemory *mem;
gsize offset = 0;
struct mem_free_cb_data *cb_data;
struct gst_frame_buffer_data *frame_data;
if (!output)
return -1;
cb_data = zalloc(sizeof *cb_data);
if (!cb_data)
return -1;
mode = output->output->current_mode;
buf = gst_buffer_new();
mem = gst_dmabuf_allocator_alloc(remoting->allocator, fd,
stride * mode->height);
gst_buffer_append_memory(buf, mem);
gst_buffer_add_video_meta_full(buf,
GST_VIDEO_FRAME_FLAG_NONE,
output->format->gst_video_format,
mode->width,
mode->height,
1,
&offset,
&stride);
cb_data->output = output;
cb_data->output_buffer = output_buffer;
gst_mini_object_weak_ref(GST_MINI_OBJECT(mem),
(GstMiniObjectNotify)remoting_gst_mem_free_cb,
cb_data);
output->fence_sync_fd = api->get_fence_sync_fd(output->output);
/* Push buffer to gstreamer immediately on get_fence_sync_fd failure */
if (output->fence_sync_fd == -1) {
remoting_output_gst_push_buffer(output, buf);
return 0;
}
frame_data = zalloc(sizeof *frame_data);
if (!frame_data) {
close(output->fence_sync_fd);
remoting_output_gst_push_buffer(output, buf);
return 0;
}
frame_data->output = output;
frame_data->buffer = buf;
loop = wl_display_get_event_loop(remoting->compositor->wl_display);
output->fence_sync_event_source =
wl_event_loop_add_fd(loop, output->fence_sync_fd,
WL_EVENT_READABLE,
remoting_output_fence_sync_handler,
frame_data);
return 0;
}
static void
remoting_output_destroy(struct weston_output *output)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
struct weston_mode *mode, *next;
wl_list_for_each_safe(mode, next, &output->mode_list, link) {
wl_list_remove(&mode->link);
free(mode);
}
remoted_output->saved_destroy(output);
remoting_gst_pipeline_deinit(remoted_output);
remoting_gstpipe_release(&remoted_output->gstpipe);
if (remoted_output->host)
free(remoted_output->host);
if (remoted_output->gst_pipeline)
free(remoted_output->gst_pipeline);
wl_list_remove(&remoted_output->link);
weston_head_release(remoted_output->head);
free(remoted_output->head);
free(remoted_output);
}
static int
remoting_output_start_repaint_loop(struct weston_output *output)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
int64_t msec;
remoted_output->saved_start_repaint_loop(output);
msec = millihz_to_nsec(remoted_output->output->current_mode->refresh)
/ 1000000;
wl_event_source_timer_update(remoted_output->finish_frame_timer, msec);
return 0;
}
static int
remoting_output_enable(struct weston_output *output)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
struct weston_compositor *c = output->compositor;
const struct weston_drm_virtual_output_api *api
= remoted_output->remoting->virtual_output_api;
struct wl_event_loop *loop;
int ret;
api->set_submit_frame_cb(output, remoting_output_frame);
ret = remoted_output->saved_enable(output);
if (ret < 0)
return ret;
remoted_output->saved_start_repaint_loop = output->start_repaint_loop;
output->start_repaint_loop = remoting_output_start_repaint_loop;
ret = remoting_gst_pipeline_init(remoted_output);
if (ret < 0) {
remoted_output->saved_disable(output);
return ret;
}
loop = wl_display_get_event_loop(c->wl_display);
remoted_output->finish_frame_timer =
wl_event_loop_add_timer(loop,
remoting_output_finish_frame_handler,
remoted_output);
return 0;
}
static int
remoting_output_disable(struct weston_output *output)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
wl_event_source_remove(remoted_output->finish_frame_timer);
remoting_gst_pipeline_deinit(remoted_output);
return remoted_output->saved_disable(output);
}
static struct weston_output *
remoting_output_create(struct weston_compositor *c, char *name)
{
struct weston_remoting *remoting = weston_remoting_get(c);
struct remoted_output *output;
struct weston_head *head;
const struct weston_drm_virtual_output_api *api;
const char *make = "Renesas";
const char *model = "Virtual Display";
const char *serial_number = "unknown";
const char *connector_name = "remoting";
if (!name || !strlen(name))
return NULL;
api = remoting->virtual_output_api;
output = zalloc(sizeof *output);
if (!output)
return NULL;
head = zalloc(sizeof *head);
if (!head)
goto err;
if (remoting_gstpipe_init(c, output) < 0) {
weston_log("Can not create pipe for gstreamer\n");
goto err;
}
output->output = api->create_output(c, name);
if (!output->output) {
weston_log("Can not create virtual output\n");
goto err;
}
output->saved_destroy = output->output->destroy;
output->output->destroy = remoting_output_destroy;
output->saved_enable = output->output->enable;
output->output->enable = remoting_output_enable;
output->saved_disable = output->output->disable;
output->output->disable = remoting_output_disable;
output->remoting = remoting;
wl_list_insert(remoting->output_list.prev, &output->link);
weston_head_init(head, connector_name);
weston_head_set_subpixel(head, WL_OUTPUT_SUBPIXEL_NONE);
weston_head_set_monitor_strings(head, make, model, serial_number);
head->compositor = c;
weston_output_attach_head(output->output, head);
output->head = head;
/* set XRGB8888 format */
output->format = &supported_formats[0];
return output->output;
err:
if (output->gstpipe.source)
remoting_gstpipe_release(&output->gstpipe);
if (head)
free(head);
free(output);
return NULL;
}
static bool
remoting_output_is_remoted(struct weston_output *output)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
if (remoted_output)
return true;
return false;
}
static int
remoting_output_set_mode(struct weston_output *output, const char *modeline)
{
struct weston_mode *mode;
int n, width, height, refresh = 0;
if (!remoting_output_is_remoted(output)) {
weston_log("Output is not remoted.\n");
return -1;
}
if (!modeline)
return -1;
n = sscanf(modeline, "%dx%d@%d", &width, &height, &refresh);
if (n != 2 && n != 3)
return -1;
mode = zalloc(sizeof *mode);
if (!mode)
return -1;
mode->flags = WL_OUTPUT_MODE_CURRENT;
mode->width = width;
mode->height = height;
mode->refresh = (refresh ? refresh : 60) * 1000LL;
wl_list_insert(output->mode_list.prev, &mode->link);
output->current_mode = mode;
return 0;
}
static void
remoting_output_set_gbm_format(struct weston_output *output,
const char *gbm_format)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
const struct weston_drm_virtual_output_api *api;
uint32_t format, i;
if (!remoted_output)
return;
api = remoted_output->remoting->virtual_output_api;
format = api->set_gbm_format(output, gbm_format);
for (i = 0; i < ARRAY_LENGTH(supported_formats); i++) {
if (format == supported_formats[i].gbm_format) {
remoted_output->format = &supported_formats[i];
return;
}
}
}
static void
remoting_output_set_seat(struct weston_output *output, const char *seat)
{
/* for now, nothing todo */
}
static void
remoting_output_set_host(struct weston_output *output, char *host)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
if (!remoted_output)
return;
if (remoted_output->host)
free(remoted_output->host);
remoted_output->host = strdup(host);
}
static void
remoting_output_set_port(struct weston_output *output, int port)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
if (remoted_output)
remoted_output->port = port;
}
static void
remoting_output_set_gst_pipeline(struct weston_output *output,
char *gst_pipeline)
{
struct remoted_output *remoted_output = lookup_remoted_output(output);
if (!remoted_output)
return;
if (remoted_output->gst_pipeline)
free(remoted_output->gst_pipeline);
remoted_output->gst_pipeline = strdup(gst_pipeline);
}
static const struct weston_remoting_api remoting_api = {
remoting_output_create,
remoting_output_is_remoted,
remoting_output_set_mode,
remoting_output_set_gbm_format,
remoting_output_set_seat,
remoting_output_set_host,
remoting_output_set_port,
remoting_output_set_gst_pipeline,
};
WL_EXPORT int
weston_module_init(struct weston_compositor *compositor)
{
int ret;
struct weston_remoting *remoting;
const struct weston_drm_virtual_output_api *api =
weston_drm_virtual_output_get_api(compositor);
if (!api)
return -1;
remoting = zalloc(sizeof *remoting);
if (!remoting)
return -1;
remoting->virtual_output_api = api;
remoting->compositor = compositor;
wl_list_init(&remoting->output_list);
ret = weston_plugin_api_register(compositor, WESTON_REMOTING_API_NAME,
&remoting_api, sizeof(remoting_api));
if (ret < 0) {
weston_log("Failed to register remoting API.\n");
goto failed;
}
/* Initialize gstreamer */
ret = remoting_gst_init(remoting);
if (ret < 0) {
weston_log("Failed to initialize gstreamer.\n");
goto failed;
}
remoting->destroy_listener.notify = weston_remoting_destroy;
wl_signal_add(&compositor->destroy_signal, &remoting->destroy_listener);
return 0;
failed:
free(remoting);
return -1;
}