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mutter-performance-source/src/backends/meta-screen-cast-stream-src.c
Jonas Ådahl 9be189daa7 screen-cast: Move cursor metadata setting to generic source 
Make the monitor implementation do things strictly related to its own
source type, leaving the Spa related logic and cursor read back in the
generic layer, later to be reused by the window source type
implementation.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/413
2019-02-26 13:39:11 +00:00

976 lines
32 KiB
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-screen-cast-stream-src.h"
#include <errno.h>
#include <pipewire/pipewire.h>
#include <spa/param/props.h>
#include <spa/param/format-utils.h>
#include <spa/param/video/format-utils.h>
#include <stdint.h>
#include <sys/mman.h>
#include "backends/meta-screen-cast-session.h"
#include "backends/meta-screen-cast-stream.h"
#include "clutter/clutter-mutter.h"
#include "core/meta-fraction.h"
#include "meta/boxes.h"
#define PRIVATE_OWNER_FROM_FIELD(TypeName, field_ptr, field_name) \
(TypeName *)((guint8 *)(field_ptr) - G_PRIVATE_OFFSET (TypeName, field_name))
#define CURSOR_META_SIZE(width, height) \
(sizeof (struct spa_meta_cursor) + \
sizeof (struct spa_meta_bitmap) + width * height * 4)
enum
{
PROP_0,
PROP_STREAM,
};
enum
{
READY,
CLOSED,
N_SIGNALS
};
static guint signals[N_SIGNALS];
typedef struct _MetaPipeWireSource
{
GSource base;
struct pw_loop *pipewire_loop;
} MetaPipeWireSource;
typedef struct _MetaScreenCastStreamSrcPrivate
{
MetaScreenCastStream *stream;
struct pw_core *pipewire_core;
struct pw_remote *pipewire_remote;
struct pw_type *pipewire_type;
MetaPipeWireSource *pipewire_source;
struct spa_hook pipewire_remote_listener;
gboolean is_enabled;
struct pw_stream *pipewire_stream;
struct spa_hook pipewire_stream_listener;
MetaSpaType spa_type;
struct spa_video_info_raw video_format;
uint64_t last_frame_timestamp_us;
int stream_width;
int stream_height;
} MetaScreenCastStreamSrcPrivate;
static void
meta_screen_cast_stream_src_init_initable_iface (GInitableIface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaScreenCastStreamSrc,
meta_screen_cast_stream_src,
G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
meta_screen_cast_stream_src_init_initable_iface)
G_ADD_PRIVATE (MetaScreenCastStreamSrc))
#define PROP_RANGE(min, max) 2, (min), (max)
static void
meta_screen_cast_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
float *frame_rate)
{
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
klass->get_specs (src, width, height, frame_rate);
}
static gboolean
meta_screen_cast_stream_src_get_videocrop (MetaScreenCastStreamSrc *src,
MetaRectangle *crop_rect)
{
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
if (klass->get_videocrop)
return klass->get_videocrop (src, crop_rect);
return FALSE;
}
static gboolean
meta_screen_cast_stream_src_record_frame (MetaScreenCastStreamSrc *src,
uint8_t *data)
{
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
return klass->record_frame (src, data);
}
static void
meta_screen_cast_stream_src_set_cursor_metadata (MetaScreenCastStreamSrc *src,
struct spa_meta_cursor *spa_meta_cursor)
{
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
if (klass->set_cursor_metadata)
klass->set_cursor_metadata (src, spa_meta_cursor);
}
MetaSpaType *
meta_screen_cast_stream_src_get_spa_type (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
return &priv->spa_type;
}
static gboolean
draw_cursor_sprite_via_offscreen (MetaScreenCastStreamSrc *src,
CoglTexture *cursor_texture,
int bitmap_width,
int bitmap_height,
uint32_t *bitmap_data,
GError **error)
{
MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
MetaScreenCastSession *session = meta_screen_cast_stream_get_session (stream);
MetaScreenCast *screen_cast =
meta_screen_cast_session_get_screen_cast (session);
MetaBackend *backend = meta_screen_cast_get_backend (screen_cast);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
CoglTexture2D *bitmap_texture;
CoglOffscreen *offscreen;
CoglFramebuffer *fb;
CoglPipeline *pipeline;
CoglColor clear_color;
bitmap_texture = cogl_texture_2d_new_with_size (cogl_context,
bitmap_width, bitmap_height);
cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (bitmap_texture),
FALSE);
if (!cogl_texture_allocate (COGL_TEXTURE (bitmap_texture), error))
{
cogl_object_unref (bitmap_texture);
return FALSE;
}
offscreen = cogl_offscreen_new_with_texture (COGL_TEXTURE (bitmap_texture));
fb = COGL_FRAMEBUFFER (offscreen);
cogl_object_unref (bitmap_texture);
if (!cogl_framebuffer_allocate (fb, error))
{
cogl_object_unref (fb);
return FALSE;
}
pipeline = cogl_pipeline_new (cogl_context);
cogl_pipeline_set_layer_texture (pipeline, 0, cursor_texture);
cogl_pipeline_set_layer_filters (pipeline, 0,
COGL_PIPELINE_FILTER_LINEAR,
COGL_PIPELINE_FILTER_LINEAR);
cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 0);
cogl_framebuffer_clear (fb, COGL_BUFFER_BIT_COLOR, &clear_color);
cogl_framebuffer_draw_rectangle (fb, pipeline,
-1, 1, 1, -1);
cogl_object_unref (pipeline);
cogl_framebuffer_read_pixels (fb,
0, 0,
bitmap_width, bitmap_height,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
(uint8_t *) bitmap_data);
cogl_object_unref (fb);
return TRUE;
}
void
meta_screen_cast_stream_src_unset_cursor_metadata (MetaScreenCastStreamSrc *src,
struct spa_meta_cursor *spa_meta_cursor)
{
spa_meta_cursor->id = 1;
}
void
meta_screen_cast_stream_src_set_cursor_position_metadata (MetaScreenCastStreamSrc *src,
struct spa_meta_cursor *spa_meta_cursor,
int x,
int y)
{
spa_meta_cursor->id = 1;
spa_meta_cursor->position.x = x;
spa_meta_cursor->position.y = y;
spa_meta_cursor->hotspot.x = 0;
spa_meta_cursor->hotspot.y = 0;
spa_meta_cursor->bitmap_offset = 0;
}
void
meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (MetaScreenCastStreamSrc *src,
struct spa_meta_cursor *spa_meta_cursor,
int x,
int y)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
MetaSpaType *spa_type = &priv->spa_type;
struct spa_meta_bitmap *spa_meta_bitmap;
spa_meta_cursor->id = 1;
spa_meta_cursor->position.x = x;
spa_meta_cursor->position.y = y;
spa_meta_cursor->bitmap_offset = sizeof (struct spa_meta_cursor);
spa_meta_bitmap = SPA_MEMBER (spa_meta_cursor,
spa_meta_cursor->bitmap_offset,
struct spa_meta_bitmap);
spa_meta_bitmap->format = spa_type->video_format.RGBA;
spa_meta_bitmap->offset = sizeof (struct spa_meta_bitmap);
spa_meta_cursor->hotspot.x = 0;
spa_meta_cursor->hotspot.y = 0;
*spa_meta_bitmap = (struct spa_meta_bitmap) { 0 };
}
void
meta_screen_cast_stream_src_set_cursor_sprite_metadata (MetaScreenCastStreamSrc *src,
struct spa_meta_cursor *spa_meta_cursor,
MetaCursorSprite *cursor_sprite,
int x,
int y,
float scale)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
MetaSpaType *spa_type = &priv->spa_type;
CoglTexture *cursor_texture;
struct spa_meta_bitmap *spa_meta_bitmap;
int hotspot_x, hotspot_y;
int texture_width, texture_height;
int bitmap_width, bitmap_height;
uint32_t *bitmap_data;
cursor_texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
if (!cursor_texture)
{
meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (src,
spa_meta_cursor,
x, y);
return;
}
spa_meta_cursor->id = 1;
spa_meta_cursor->position.x = x;
spa_meta_cursor->position.y = y;
spa_meta_cursor->bitmap_offset = sizeof (struct spa_meta_cursor);
spa_meta_bitmap = SPA_MEMBER (spa_meta_cursor,
spa_meta_cursor->bitmap_offset,
struct spa_meta_bitmap);
spa_meta_bitmap->format = spa_type->video_format.RGBA;
spa_meta_bitmap->offset = sizeof (struct spa_meta_bitmap);
meta_cursor_sprite_get_hotspot (cursor_sprite, &hotspot_x, &hotspot_y);
spa_meta_cursor->hotspot.x = (int32_t) roundf (hotspot_x * scale);
spa_meta_cursor->hotspot.y = (int32_t) roundf (hotspot_y * scale);
texture_width = cogl_texture_get_width (cursor_texture);
texture_height = cogl_texture_get_height (cursor_texture);
bitmap_width = texture_width * scale;
bitmap_height = texture_height * scale;
spa_meta_bitmap->size.width = bitmap_width;
spa_meta_bitmap->size.height = bitmap_height;
spa_meta_bitmap->stride = bitmap_width * 4;
bitmap_data = SPA_MEMBER (spa_meta_bitmap,
spa_meta_bitmap->offset,
uint32_t);
if (texture_width == bitmap_width &&
texture_height == bitmap_height)
{
cogl_texture_get_data (cursor_texture,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
texture_width * 4,
(uint8_t *) bitmap_data);
}
else
{
GError *error = NULL;
if (!draw_cursor_sprite_via_offscreen (src,
cursor_texture,
bitmap_width,
bitmap_height,
bitmap_data,
&error))
{
g_warning ("Failed to draw cursor via offscreen: %s",
error->message);
g_error_free (error);
spa_meta_cursor->id = 0;
}
}
}
static void
add_cursor_metadata (MetaScreenCastStreamSrc *src,
struct spa_buffer *spa_buffer)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
MetaSpaType *spa_type = &priv->spa_type;
struct spa_meta_cursor *spa_meta_cursor;
spa_meta_cursor = spa_buffer_find_meta (spa_buffer, spa_type->meta_cursor);
if (spa_meta_cursor)
meta_screen_cast_stream_src_set_cursor_metadata (src, spa_meta_cursor);
}
static void
maybe_record_cursor (MetaScreenCastStreamSrc *src,
struct spa_buffer *spa_buffer,
uint8_t *data)
{
MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
switch (meta_screen_cast_stream_get_cursor_mode (stream))
{
case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
return;
case META_SCREEN_CAST_CURSOR_MODE_METADATA:
add_cursor_metadata (src, spa_buffer);
return;
}
g_assert_not_reached ();
}
void
meta_screen_cast_stream_src_maybe_record_frame (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
MetaRectangle crop_rect;
struct pw_buffer *buffer;
struct spa_buffer *spa_buffer;
uint8_t *map = NULL;
uint8_t *data;
uint64_t now_us;
now_us = g_get_monotonic_time ();
if (priv->last_frame_timestamp_us != 0 &&
(now_us - priv->last_frame_timestamp_us <
((1000000 * priv->video_format.max_framerate.denom) /
priv->video_format.max_framerate.num)))
return;
if (!priv->pipewire_stream)
return;
buffer = pw_stream_dequeue_buffer (priv->pipewire_stream);
if (!buffer)
{
g_warning ("Failed to dequeue at PipeWire buffer");
return;
}
spa_buffer = buffer->buffer;
if (spa_buffer->datas[0].data)
{
data = spa_buffer->datas[0].data;
}
else if (spa_buffer->datas[0].type == priv->pipewire_type->data.MemFd)
{
map = mmap (NULL, spa_buffer->datas[0].maxsize + spa_buffer->datas[0].mapoffset,
PROT_READ | PROT_WRITE, MAP_SHARED,
spa_buffer->datas[0].fd, 0);
if (map == MAP_FAILED)
{
g_warning ("Failed to mmap pipewire stream buffer: %s\n",
strerror (errno));
return;
}
data = SPA_MEMBER (map, spa_buffer->datas[0].mapoffset, uint8_t);
}
else
{
g_warning ("Unhandled spa buffer type: %d", spa_buffer->datas[0].type);
return;
}
if (meta_screen_cast_stream_src_record_frame (src, data))
{
struct spa_meta_video_crop *spa_meta_video_crop;
spa_buffer->datas[0].chunk->size = spa_buffer->datas[0].maxsize;
/* Update VideoCrop if needed */
spa_meta_video_crop =
spa_buffer_find_meta (spa_buffer, priv->pipewire_type->meta.VideoCrop);
if (spa_meta_video_crop)
{
if (meta_screen_cast_stream_src_get_videocrop (src, &crop_rect))
{
spa_meta_video_crop->x = crop_rect.x;
spa_meta_video_crop->y = crop_rect.y;
spa_meta_video_crop->width = crop_rect.width;
spa_meta_video_crop->height = crop_rect.height;
}
else
{
spa_meta_video_crop->x = 0;
spa_meta_video_crop->y = 0;
spa_meta_video_crop->width = priv->stream_width;
spa_meta_video_crop->height = priv->stream_height;
}
}
}
else
{
spa_buffer->datas[0].chunk->size = 0;
}
maybe_record_cursor (src, spa_buffer, data);
priv->last_frame_timestamp_us = now_us;
if (map)
munmap (map, spa_buffer->datas[0].maxsize + spa_buffer->datas[0].mapoffset);
pw_stream_queue_buffer (priv->pipewire_stream, buffer);
}
static gboolean
meta_screen_cast_stream_src_is_enabled (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
return priv->is_enabled;
}
static void
meta_screen_cast_stream_src_enable (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src)->enable (src);
priv->is_enabled = TRUE;
}
static void
meta_screen_cast_stream_src_disable (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src)->disable (src);
priv->is_enabled = FALSE;
}
static void
meta_screen_cast_stream_src_notify_closed (MetaScreenCastStreamSrc *src)
{
g_signal_emit (src, signals[CLOSED], 0);
}
static void
on_stream_state_changed (void *data,
enum pw_stream_state old,
enum pw_stream_state state,
const char *error_message)
{
MetaScreenCastStreamSrc *src = data;
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
uint32_t node_id;
switch (state)
{
case PW_STREAM_STATE_ERROR:
g_warning ("pipewire stream error: %s", error_message);
meta_screen_cast_stream_src_notify_closed (src);
break;
case PW_STREAM_STATE_CONFIGURE:
node_id = pw_stream_get_node_id (priv->pipewire_stream);
g_signal_emit (src, signals[READY], 0, (unsigned int) node_id);
break;
case PW_STREAM_STATE_UNCONNECTED:
case PW_STREAM_STATE_CONNECTING:
case PW_STREAM_STATE_READY:
case PW_STREAM_STATE_PAUSED:
if (meta_screen_cast_stream_src_is_enabled (src))
meta_screen_cast_stream_src_disable (src);
break;
case PW_STREAM_STATE_STREAMING:
if (!meta_screen_cast_stream_src_is_enabled (src))
meta_screen_cast_stream_src_enable (src);
break;
}
}
static void
on_stream_format_changed (void *data,
const struct spa_pod *format)
{
MetaScreenCastStreamSrc *src = data;
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
struct pw_type *pipewire_type = priv->pipewire_type;
uint8_t params_buffer[1024];
int32_t width, height, stride, size;
struct spa_pod_builder pod_builder;
const struct spa_pod *params[3];
const int bpp = 4;
if (!format)
{
pw_stream_finish_format (priv->pipewire_stream, 0, NULL, 0);
return;
}
spa_format_video_raw_parse (format,
&priv->video_format,
&priv->spa_type.format_video);
width = priv->video_format.size.width;
height = priv->video_format.size.height;
stride = SPA_ROUND_UP_N (width * bpp, 4);
size = height * stride;
pod_builder = SPA_POD_BUILDER_INIT (params_buffer, sizeof (params_buffer));
params[0] = spa_pod_builder_object (
&pod_builder,
pipewire_type->param.idBuffers, pipewire_type->param_buffers.Buffers,
":", pipewire_type->param_buffers.size, "i", size,
":", pipewire_type->param_buffers.stride, "i", stride,
":", pipewire_type->param_buffers.buffers, "iru", 16, PROP_RANGE (2, 16),
":", pipewire_type->param_buffers.align, "i", 16);
params[1] = spa_pod_builder_object (
&pod_builder,
pipewire_type->param.idMeta, pipewire_type->param_meta.Meta,
":", pipewire_type->param_meta.type, "I", pipewire_type->meta.VideoCrop,
":", pipewire_type->param_meta.size, "i", sizeof (struct spa_meta_video_crop));
params[2] = spa_pod_builder_object (
&pod_builder,
pipewire_type->param.idMeta, pipewire_type->param_meta.Meta,
":", pipewire_type->param_meta.type, "I", priv->spa_type.meta_cursor,
":", pipewire_type->param_meta.size, "i", CURSOR_META_SIZE (64, 64));
pw_stream_finish_format (priv->pipewire_stream, 0,
params, G_N_ELEMENTS (params));
}
static const struct pw_stream_events stream_events = {
PW_VERSION_STREAM_EVENTS,
.state_changed = on_stream_state_changed,
.format_changed = on_stream_format_changed,
};
static struct pw_stream *
create_pipewire_stream (MetaScreenCastStreamSrc *src,
GError **error)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
struct pw_stream *pipewire_stream;
uint8_t buffer[1024];
struct spa_pod_builder pod_builder =
SPA_POD_BUILDER_INIT (buffer, sizeof (buffer));
MetaSpaType *spa_type = &priv->spa_type;
struct pw_type *pipewire_type = priv->pipewire_type;
float frame_rate;
MetaFraction frame_rate_fraction;
struct spa_fraction max_framerate;
struct spa_fraction min_framerate;
const struct spa_pod *params[1];
int result;
pipewire_stream = pw_stream_new (priv->pipewire_remote,
"meta-screen-cast-src",
NULL);
if (!pipewire_stream)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to create PipeWire stream: %s",
strerror (errno));
return NULL;
}
meta_screen_cast_stream_src_get_specs (src,
&priv->stream_width,
&priv->stream_height,
&frame_rate);
frame_rate_fraction = meta_fraction_from_double (frame_rate);
min_framerate = SPA_FRACTION (1, 1);
max_framerate = SPA_FRACTION (frame_rate_fraction.num,
frame_rate_fraction.denom);
params[0] = spa_pod_builder_object (
&pod_builder,
pipewire_type->param.idEnumFormat, pipewire_type->spa_format,
"I", spa_type->media_type.video,
"I", spa_type->media_subtype.raw,
":", spa_type->format_video.format, "I", spa_type->video_format.BGRx,
":", spa_type->format_video.size, "R", &SPA_RECTANGLE (priv->stream_width,
priv->stream_height),
":", spa_type->format_video.framerate, "F", &SPA_FRACTION (0, 1),
":", spa_type->format_video.max_framerate, "Fru", &max_framerate,
PROP_RANGE (&min_framerate,
&max_framerate));
pw_stream_add_listener (pipewire_stream,
&priv->pipewire_stream_listener,
&stream_events,
src);
result = pw_stream_connect (pipewire_stream,
PW_DIRECTION_OUTPUT,
NULL,
(PW_STREAM_FLAG_DRIVER |
PW_STREAM_FLAG_MAP_BUFFERS),
params, G_N_ELEMENTS (params));
if (result != 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Could not connect: %s", spa_strerror (result));
return NULL;
}
return pipewire_stream;
}
static void
on_state_changed (void *data,
enum pw_remote_state old,
enum pw_remote_state state,
const char *error_message)
{
MetaScreenCastStreamSrc *src = data;
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
struct pw_stream *pipewire_stream;
GError *error = NULL;
switch (state)
{
case PW_REMOTE_STATE_ERROR:
g_warning ("pipewire remote error: %s\n", error_message);
meta_screen_cast_stream_src_notify_closed (src);
break;
case PW_REMOTE_STATE_CONNECTED:
pipewire_stream = create_pipewire_stream (src, &error);
if (!pipewire_stream)
{
g_warning ("Could not create pipewire stream: %s", error->message);
g_error_free (error);
meta_screen_cast_stream_src_notify_closed (src);
}
else
{
priv->pipewire_stream = pipewire_stream;
}
break;
case PW_REMOTE_STATE_UNCONNECTED:
case PW_REMOTE_STATE_CONNECTING:
break;
}
}
static gboolean
pipewire_loop_source_prepare (GSource *base,
int *timeout)
{
*timeout = -1;
return FALSE;
}
static gboolean
pipewire_loop_source_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
MetaPipeWireSource *pipewire_source = (MetaPipeWireSource *) source;
int result;
result = pw_loop_iterate (pipewire_source->pipewire_loop, 0);
if (result < 0)
g_warning ("pipewire_loop_iterate failed: %s", spa_strerror (result));
return TRUE;
}
static void
pipewire_loop_source_finalize (GSource *source)
{
MetaPipeWireSource *pipewire_source = (MetaPipeWireSource *) source;
pw_loop_leave (pipewire_source->pipewire_loop);
pw_loop_destroy (pipewire_source->pipewire_loop);
}
static GSourceFuncs pipewire_source_funcs =
{
pipewire_loop_source_prepare,
NULL,
pipewire_loop_source_dispatch,
pipewire_loop_source_finalize
};
static void
init_spa_type (MetaSpaType *type,
struct spa_type_map *map)
{
spa_type_media_type_map (map, &type->media_type);
spa_type_media_subtype_map (map, &type->media_subtype);
spa_type_format_video_map (map, &type->format_video);
spa_type_video_format_map (map, &type->video_format);
type->meta_cursor = spa_type_map_get_id(map, SPA_TYPE_META__Cursor);
}
static MetaPipeWireSource *
create_pipewire_source (void)
{
MetaPipeWireSource *pipewire_source;
pipewire_source =
(MetaPipeWireSource *) g_source_new (&pipewire_source_funcs,
sizeof (MetaPipeWireSource));
pipewire_source->pipewire_loop = pw_loop_new (NULL);
if (!pipewire_source->pipewire_loop)
{
g_source_destroy ((GSource *) pipewire_source);
return NULL;
}
g_source_add_unix_fd (&pipewire_source->base,
pw_loop_get_fd (pipewire_source->pipewire_loop),
G_IO_IN | G_IO_ERR);
pw_loop_enter (pipewire_source->pipewire_loop);
g_source_attach (&pipewire_source->base, NULL);
return pipewire_source;
}
static const struct pw_remote_events remote_events = {
PW_VERSION_REMOTE_EVENTS,
.state_changed = on_state_changed,
};
static gboolean
meta_screen_cast_stream_src_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (initable);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
priv->pipewire_source = create_pipewire_source ();
if (!priv->pipewire_source)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to create PipeWire source");
return FALSE;
}
priv->pipewire_core = pw_core_new (priv->pipewire_source->pipewire_loop,
NULL);
if (!priv->pipewire_core)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to create pipewire core");
return FALSE;
}
priv->pipewire_remote = pw_remote_new (priv->pipewire_core, NULL, 0);
if (!priv->pipewire_remote)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Couldn't creat pipewire remote");
return FALSE;
}
pw_remote_add_listener (priv->pipewire_remote,
&priv->pipewire_remote_listener,
&remote_events,
src);
priv->pipewire_type = pw_core_get_type (priv->pipewire_core);
init_spa_type (&priv->spa_type, priv->pipewire_type->map);
if (pw_remote_connect (priv->pipewire_remote) != 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Couldn't connect pipewire remote");
return FALSE;
}
return TRUE;
}
static void
meta_screen_cast_stream_src_init_initable_iface (GInitableIface *iface)
{
iface->init = meta_screen_cast_stream_src_initable_init;
}
MetaScreenCastStream *
meta_screen_cast_stream_src_get_stream (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
return priv->stream;
}
static void
meta_screen_cast_stream_src_finalize (GObject *object)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
if (meta_screen_cast_stream_src_is_enabled (src))
meta_screen_cast_stream_src_disable (src);
g_clear_pointer (&priv->pipewire_stream, pw_stream_destroy);
g_clear_pointer (&priv->pipewire_remote, pw_remote_destroy);
g_clear_pointer (&priv->pipewire_core, pw_core_destroy);
g_source_destroy (&priv->pipewire_source->base);
G_OBJECT_CLASS (meta_screen_cast_stream_src_parent_class)->finalize (object);
}
static void
meta_screen_cast_stream_src_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
switch (prop_id)
{
case PROP_STREAM:
priv->stream = g_value_get_object (value);
break;;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
meta_screen_cast_stream_src_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
switch (prop_id)
{
case PROP_STREAM:
g_value_set_object (value, priv->stream);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
meta_screen_cast_stream_src_init (MetaScreenCastStreamSrc *src)
{
}
static void
meta_screen_cast_stream_src_class_init (MetaScreenCastStreamSrcClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_screen_cast_stream_src_finalize;
object_class->set_property = meta_screen_cast_stream_src_set_property;
object_class->get_property = meta_screen_cast_stream_src_get_property;
g_object_class_install_property (object_class,
PROP_STREAM,
g_param_spec_object ("stream",
"stream",
"MetaScreenCastStream",
META_TYPE_SCREEN_CAST_STREAM,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
signals[READY] = g_signal_new ("ready",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1,
G_TYPE_UINT);
signals[CLOSED] = g_signal_new ("closed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}
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