mirror of
https://github.com/brl/mutter.git
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26e1e495a0
For every stream src, we created and attached a GSource. Upon stream src destruction, we g_source_destroy():ed the GSource. What g_source_destroy() does, hawever, is not really "destroy" it but only detaches it from the main context removing the reference the context had added for it via g_source_attach(). This caused the GSource to leak, although in a detached state, as the reference taken on creation was still held. Fix this by also removing our own reference to it when finalizing. https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1106
1072 lines
35 KiB
C
1072 lines
35 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright (C) 2015-2017 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#include "config.h"
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#include "backends/meta-screen-cast-stream-src.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <pipewire/pipewire.h>
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#include <spa/param/props.h>
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#include <spa/param/format-utils.h>
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#include <spa/param/video/format-utils.h>
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#include <spa/utils/result.h>
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#include <stdint.h>
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#include <sys/mman.h>
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#include "backends/meta-screen-cast-session.h"
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#include "backends/meta-screen-cast-stream.h"
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#include "clutter/clutter-mutter.h"
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#include "core/meta-fraction.h"
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#include "meta/boxes.h"
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#define PRIVATE_OWNER_FROM_FIELD(TypeName, field_ptr, field_name) \
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(TypeName *)((guint8 *)(field_ptr) - G_PRIVATE_OFFSET (TypeName, field_name))
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#define CURSOR_META_SIZE(width, height) \
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(sizeof (struct spa_meta_cursor) + \
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sizeof (struct spa_meta_bitmap) + width * height * 4)
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enum
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{
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PROP_0,
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PROP_STREAM,
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};
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enum
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{
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READY,
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CLOSED,
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N_SIGNALS
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};
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static guint signals[N_SIGNALS];
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typedef struct _MetaPipeWireSource
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{
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GSource base;
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struct pw_loop *pipewire_loop;
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} MetaPipeWireSource;
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typedef struct _MetaScreenCastStreamSrcPrivate
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{
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MetaScreenCastStream *stream;
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struct pw_context *pipewire_context;
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struct pw_core *pipewire_core;
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MetaPipeWireSource *pipewire_source;
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struct spa_hook pipewire_core_listener;
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gboolean is_enabled;
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struct pw_stream *pipewire_stream;
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struct spa_hook pipewire_stream_listener;
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uint32_t node_id;
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struct spa_video_info_raw video_format;
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int video_stride;
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uint64_t last_frame_timestamp_us;
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GHashTable *dmabuf_handles;
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int stream_width;
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int stream_height;
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} MetaScreenCastStreamSrcPrivate;
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static void
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meta_screen_cast_stream_src_init_initable_iface (GInitableIface *iface);
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G_DEFINE_TYPE_WITH_CODE (MetaScreenCastStreamSrc,
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meta_screen_cast_stream_src,
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G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
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meta_screen_cast_stream_src_init_initable_iface)
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G_ADD_PRIVATE (MetaScreenCastStreamSrc))
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static void
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meta_screen_cast_stream_src_get_specs (MetaScreenCastStreamSrc *src,
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int *width,
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int *height,
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float *frame_rate)
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{
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MetaScreenCastStreamSrcClass *klass =
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META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
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klass->get_specs (src, width, height, frame_rate);
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}
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static gboolean
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meta_screen_cast_stream_src_get_videocrop (MetaScreenCastStreamSrc *src,
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MetaRectangle *crop_rect)
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{
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MetaScreenCastStreamSrcClass *klass =
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META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
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if (klass->get_videocrop)
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return klass->get_videocrop (src, crop_rect);
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return FALSE;
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}
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static gboolean
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meta_screen_cast_stream_src_record_frame (MetaScreenCastStreamSrc *src,
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uint8_t *data)
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{
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MetaScreenCastStreamSrcClass *klass =
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META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
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return klass->record_frame (src, data);
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}
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static gboolean
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meta_screen_cast_stream_src_blit_to_framebuffer (MetaScreenCastStreamSrc *src,
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CoglFramebuffer *framebuffer)
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{
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MetaScreenCastStreamSrcClass *klass =
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META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
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return klass->blit_to_framebuffer (src, framebuffer);
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}
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static void
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meta_screen_cast_stream_src_set_cursor_metadata (MetaScreenCastStreamSrc *src,
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struct spa_meta_cursor *spa_meta_cursor)
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{
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MetaScreenCastStreamSrcClass *klass =
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META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
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if (klass->set_cursor_metadata)
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klass->set_cursor_metadata (src, spa_meta_cursor);
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}
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static gboolean
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draw_cursor_sprite_via_offscreen (MetaScreenCastStreamSrc *src,
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CoglTexture *cursor_texture,
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int bitmap_width,
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int bitmap_height,
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uint8_t *bitmap_data,
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GError **error)
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{
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MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
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MetaScreenCastSession *session = meta_screen_cast_stream_get_session (stream);
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MetaScreenCast *screen_cast =
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meta_screen_cast_session_get_screen_cast (session);
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MetaBackend *backend = meta_screen_cast_get_backend (screen_cast);
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ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
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CoglContext *cogl_context =
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clutter_backend_get_cogl_context (clutter_backend);
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CoglTexture2D *bitmap_texture;
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CoglOffscreen *offscreen;
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CoglFramebuffer *fb;
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CoglPipeline *pipeline;
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CoglColor clear_color;
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bitmap_texture = cogl_texture_2d_new_with_size (cogl_context,
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bitmap_width, bitmap_height);
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cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (bitmap_texture),
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FALSE);
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if (!cogl_texture_allocate (COGL_TEXTURE (bitmap_texture), error))
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{
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cogl_object_unref (bitmap_texture);
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return FALSE;
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}
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offscreen = cogl_offscreen_new_with_texture (COGL_TEXTURE (bitmap_texture));
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fb = COGL_FRAMEBUFFER (offscreen);
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cogl_object_unref (bitmap_texture);
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if (!cogl_framebuffer_allocate (fb, error))
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{
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cogl_object_unref (fb);
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return FALSE;
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}
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pipeline = cogl_pipeline_new (cogl_context);
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cogl_pipeline_set_layer_texture (pipeline, 0, cursor_texture);
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cogl_pipeline_set_layer_filters (pipeline, 0,
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COGL_PIPELINE_FILTER_LINEAR,
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COGL_PIPELINE_FILTER_LINEAR);
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cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 0);
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cogl_framebuffer_clear (fb, COGL_BUFFER_BIT_COLOR, &clear_color);
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cogl_framebuffer_draw_rectangle (fb, pipeline,
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-1, 1, 1, -1);
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cogl_object_unref (pipeline);
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cogl_framebuffer_read_pixels (fb,
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0, 0,
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bitmap_width, bitmap_height,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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bitmap_data);
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cogl_object_unref (fb);
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return TRUE;
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}
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gboolean
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meta_screen_cast_stream_src_draw_cursor_into (MetaScreenCastStreamSrc *src,
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CoglTexture *cursor_texture,
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float scale,
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uint8_t *data,
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GError **error)
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{
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int texture_width, texture_height;
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int width, height;
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texture_width = cogl_texture_get_width (cursor_texture);
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texture_height = cogl_texture_get_height (cursor_texture);
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width = texture_width * scale;
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height = texture_height * scale;
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if (texture_width == width &&
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texture_height == height)
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{
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cogl_texture_get_data (cursor_texture,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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texture_width * 4,
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data);
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}
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else
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{
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if (!draw_cursor_sprite_via_offscreen (src,
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cursor_texture,
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width,
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height,
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data,
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error))
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return FALSE;
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}
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return TRUE;
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}
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void
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meta_screen_cast_stream_src_unset_cursor_metadata (MetaScreenCastStreamSrc *src,
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struct spa_meta_cursor *spa_meta_cursor)
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{
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spa_meta_cursor->id = 1;
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}
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void
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meta_screen_cast_stream_src_set_cursor_position_metadata (MetaScreenCastStreamSrc *src,
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struct spa_meta_cursor *spa_meta_cursor,
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int x,
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int y)
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{
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spa_meta_cursor->id = 1;
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spa_meta_cursor->position.x = x;
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spa_meta_cursor->position.y = y;
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spa_meta_cursor->hotspot.x = 0;
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spa_meta_cursor->hotspot.y = 0;
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spa_meta_cursor->bitmap_offset = 0;
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}
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void
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meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (MetaScreenCastStreamSrc *src,
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struct spa_meta_cursor *spa_meta_cursor,
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int x,
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int y)
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{
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struct spa_meta_bitmap *spa_meta_bitmap;
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spa_meta_cursor->id = 1;
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spa_meta_cursor->position.x = x;
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spa_meta_cursor->position.y = y;
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spa_meta_cursor->bitmap_offset = sizeof (struct spa_meta_cursor);
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spa_meta_bitmap = SPA_MEMBER (spa_meta_cursor,
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spa_meta_cursor->bitmap_offset,
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struct spa_meta_bitmap);
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spa_meta_bitmap->format = SPA_VIDEO_FORMAT_RGBA;
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spa_meta_bitmap->offset = sizeof (struct spa_meta_bitmap);
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spa_meta_cursor->hotspot.x = 0;
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spa_meta_cursor->hotspot.y = 0;
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*spa_meta_bitmap = (struct spa_meta_bitmap) { 0 };
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}
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void
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meta_screen_cast_stream_src_set_cursor_sprite_metadata (MetaScreenCastStreamSrc *src,
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struct spa_meta_cursor *spa_meta_cursor,
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MetaCursorSprite *cursor_sprite,
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int x,
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int y,
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float scale)
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{
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CoglTexture *cursor_texture;
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struct spa_meta_bitmap *spa_meta_bitmap;
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int hotspot_x, hotspot_y;
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int texture_width, texture_height;
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int bitmap_width, bitmap_height;
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uint8_t *bitmap_data;
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GError *error = NULL;
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cursor_texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
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if (!cursor_texture)
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{
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meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (src,
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spa_meta_cursor,
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x, y);
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return;
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}
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spa_meta_cursor->id = 1;
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spa_meta_cursor->position.x = x;
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spa_meta_cursor->position.y = y;
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spa_meta_cursor->bitmap_offset = sizeof (struct spa_meta_cursor);
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spa_meta_bitmap = SPA_MEMBER (spa_meta_cursor,
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spa_meta_cursor->bitmap_offset,
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struct spa_meta_bitmap);
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spa_meta_bitmap->format = SPA_VIDEO_FORMAT_RGBA;
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spa_meta_bitmap->offset = sizeof (struct spa_meta_bitmap);
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meta_cursor_sprite_get_hotspot (cursor_sprite, &hotspot_x, &hotspot_y);
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spa_meta_cursor->hotspot.x = (int32_t) roundf (hotspot_x * scale);
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spa_meta_cursor->hotspot.y = (int32_t) roundf (hotspot_y * scale);
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texture_width = cogl_texture_get_width (cursor_texture);
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texture_height = cogl_texture_get_height (cursor_texture);
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bitmap_width = texture_width * scale;
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bitmap_height = texture_height * scale;
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spa_meta_bitmap->size.width = bitmap_width;
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spa_meta_bitmap->size.height = bitmap_height;
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spa_meta_bitmap->stride = bitmap_width * 4;
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bitmap_data = SPA_MEMBER (spa_meta_bitmap,
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spa_meta_bitmap->offset,
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uint8_t);
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if (!meta_screen_cast_stream_src_draw_cursor_into (src,
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cursor_texture,
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scale,
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bitmap_data,
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&error))
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{
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g_warning ("Failed to draw cursor: %s", error->message);
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g_error_free (error);
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spa_meta_cursor->id = 0;
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}
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}
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static void
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add_cursor_metadata (MetaScreenCastStreamSrc *src,
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struct spa_buffer *spa_buffer)
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{
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struct spa_meta_cursor *spa_meta_cursor;
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spa_meta_cursor = spa_buffer_find_meta_data (spa_buffer, SPA_META_Cursor,
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sizeof (*spa_meta_cursor));
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if (spa_meta_cursor)
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meta_screen_cast_stream_src_set_cursor_metadata (src, spa_meta_cursor);
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}
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static void
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maybe_record_cursor (MetaScreenCastStreamSrc *src,
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struct spa_buffer *spa_buffer)
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{
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MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
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switch (meta_screen_cast_stream_get_cursor_mode (stream))
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{
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case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
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case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
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return;
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case META_SCREEN_CAST_CURSOR_MODE_METADATA:
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add_cursor_metadata (src, spa_buffer);
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return;
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}
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g_assert_not_reached ();
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}
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static gboolean
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do_record_frame (MetaScreenCastStreamSrc *src,
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struct spa_buffer *spa_buffer,
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uint8_t *data)
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{
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MetaScreenCastStreamSrcPrivate *priv =
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meta_screen_cast_stream_src_get_instance_private (src);
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if (spa_buffer->datas[0].data ||
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spa_buffer->datas[0].type == SPA_DATA_MemFd)
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{
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return meta_screen_cast_stream_src_record_frame (src, data);
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}
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else if (spa_buffer->datas[0].type == SPA_DATA_DmaBuf)
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{
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CoglDmaBufHandle *dmabuf_handle =
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g_hash_table_lookup (priv->dmabuf_handles,
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GINT_TO_POINTER (spa_buffer->datas[0].fd));
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CoglFramebuffer *dmabuf_fbo =
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cogl_dma_buf_handle_get_framebuffer (dmabuf_handle);
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return meta_screen_cast_stream_src_blit_to_framebuffer (src, dmabuf_fbo);
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}
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return FALSE;
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}
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void
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meta_screen_cast_stream_src_maybe_record_frame (MetaScreenCastStreamSrc *src)
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{
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MetaScreenCastStreamSrcPrivate *priv =
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meta_screen_cast_stream_src_get_instance_private (src);
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MetaRectangle crop_rect;
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struct pw_buffer *buffer;
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struct spa_buffer *spa_buffer;
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uint8_t *data = NULL;
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uint64_t now_us;
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now_us = g_get_monotonic_time ();
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if (priv->last_frame_timestamp_us != 0 &&
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(now_us - priv->last_frame_timestamp_us <
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((1000000 * priv->video_format.max_framerate.denom) /
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priv->video_format.max_framerate.num)))
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return;
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if (!priv->pipewire_stream)
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return;
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buffer = pw_stream_dequeue_buffer (priv->pipewire_stream);
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if (!buffer)
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return;
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spa_buffer = buffer->buffer;
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data = spa_buffer->datas[0].data;
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if (spa_buffer->datas[0].type != SPA_DATA_DmaBuf && !data)
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{
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g_critical ("Invalid buffer data");
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return;
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}
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if (do_record_frame (src, spa_buffer, data))
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{
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struct spa_meta_region *spa_meta_video_crop;
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spa_buffer->datas[0].chunk->size = spa_buffer->datas[0].maxsize;
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spa_buffer->datas[0].chunk->stride = priv->video_stride;
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/* Update VideoCrop if needed */
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spa_meta_video_crop =
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spa_buffer_find_meta_data (spa_buffer, SPA_META_VideoCrop,
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sizeof (*spa_meta_video_crop));
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if (spa_meta_video_crop)
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{
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if (meta_screen_cast_stream_src_get_videocrop (src, &crop_rect))
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{
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spa_meta_video_crop->region.position.x = crop_rect.x;
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spa_meta_video_crop->region.position.y = crop_rect.y;
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spa_meta_video_crop->region.size.width = crop_rect.width;
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spa_meta_video_crop->region.size.height = crop_rect.height;
|
|
}
|
|
else
|
|
{
|
|
spa_meta_video_crop->region.position.x = 0;
|
|
spa_meta_video_crop->region.position.y = 0;
|
|
spa_meta_video_crop->region.size.width = priv->stream_width;
|
|
spa_meta_video_crop->region.size.height = priv->stream_height;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
spa_buffer->datas[0].chunk->size = 0;
|
|
}
|
|
|
|
maybe_record_cursor (src, spa_buffer);
|
|
|
|
priv->last_frame_timestamp_us = now_us;
|
|
|
|
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);
|
|
|
|
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_PAUSED:
|
|
if (priv->node_id == SPA_ID_INVALID && priv->pipewire_stream)
|
|
{
|
|
priv->node_id = pw_stream_get_node_id (priv->pipewire_stream);
|
|
g_signal_emit (src, signals[READY], 0, (unsigned int) priv->node_id);
|
|
}
|
|
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;
|
|
case PW_STREAM_STATE_UNCONNECTED:
|
|
case PW_STREAM_STATE_CONNECTING:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
on_stream_param_changed (void *data,
|
|
uint32_t id,
|
|
const struct spa_pod *format)
|
|
{
|
|
MetaScreenCastStreamSrc *src = data;
|
|
MetaScreenCastStreamSrcPrivate *priv =
|
|
meta_screen_cast_stream_src_get_instance_private (src);
|
|
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 || id != SPA_PARAM_Format)
|
|
return;
|
|
|
|
spa_format_video_raw_parse (format,
|
|
&priv->video_format);
|
|
|
|
width = priv->video_format.size.width;
|
|
height = priv->video_format.size.height;
|
|
stride = SPA_ROUND_UP_N (width * bpp, 4);
|
|
size = height * stride;
|
|
|
|
priv->video_stride = stride;
|
|
|
|
pod_builder = SPA_POD_BUILDER_INIT (params_buffer, sizeof (params_buffer));
|
|
|
|
params[0] = spa_pod_builder_add_object (
|
|
&pod_builder,
|
|
SPA_TYPE_OBJECT_ParamBuffers, SPA_PARAM_Buffers,
|
|
SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int (16, 2, 16),
|
|
SPA_PARAM_BUFFERS_blocks, SPA_POD_Int (1),
|
|
SPA_PARAM_BUFFERS_size, SPA_POD_Int (size),
|
|
SPA_PARAM_BUFFERS_stride, SPA_POD_Int (stride),
|
|
SPA_PARAM_BUFFERS_align, SPA_POD_Int (16));
|
|
|
|
params[1] = spa_pod_builder_add_object (
|
|
&pod_builder,
|
|
SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
|
|
SPA_PARAM_META_type, SPA_POD_Id (SPA_META_VideoCrop),
|
|
SPA_PARAM_META_size, SPA_POD_Int (sizeof (struct spa_meta_region)));
|
|
|
|
params[2] = spa_pod_builder_add_object (
|
|
&pod_builder,
|
|
SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
|
|
SPA_PARAM_META_type, SPA_POD_Id (SPA_META_Cursor),
|
|
SPA_PARAM_META_size, SPA_POD_Int (CURSOR_META_SIZE (64, 64)));
|
|
|
|
pw_stream_update_params (priv->pipewire_stream, params, G_N_ELEMENTS (params));
|
|
}
|
|
|
|
static void
|
|
on_stream_add_buffer (void *data,
|
|
struct pw_buffer *buffer)
|
|
{
|
|
MetaScreenCastStreamSrc *src = data;
|
|
MetaScreenCastStreamSrcPrivate *priv =
|
|
meta_screen_cast_stream_src_get_instance_private (src);
|
|
CoglContext *context =
|
|
clutter_backend_get_cogl_context (clutter_get_default_backend ());
|
|
CoglRenderer *renderer = cogl_context_get_renderer (context);
|
|
g_autoptr (GError) error = NULL;
|
|
CoglDmaBufHandle *dmabuf_handle;
|
|
struct spa_buffer *spa_buffer = buffer->buffer;
|
|
struct spa_data *spa_data = spa_buffer->datas;
|
|
const int bpp = 4;
|
|
int stride;
|
|
|
|
stride = SPA_ROUND_UP_N (priv->video_format.size.width * bpp, 4);
|
|
|
|
spa_data[0].mapoffset = 0;
|
|
spa_data[0].maxsize = stride * priv->video_format.size.height;
|
|
|
|
dmabuf_handle = cogl_renderer_create_dma_buf (renderer,
|
|
priv->stream_width,
|
|
priv->stream_height,
|
|
&error);
|
|
|
|
if (error)
|
|
g_debug ("Error exporting DMA buffer handle: %s", error->message);
|
|
|
|
if (dmabuf_handle)
|
|
{
|
|
spa_data[0].type = SPA_DATA_DmaBuf;
|
|
spa_data[0].flags = SPA_DATA_FLAG_READWRITE;
|
|
spa_data[0].fd = cogl_dma_buf_handle_get_fd (dmabuf_handle);
|
|
spa_data[0].data = NULL;
|
|
|
|
g_hash_table_insert (priv->dmabuf_handles,
|
|
GINT_TO_POINTER (spa_data[0].fd),
|
|
dmabuf_handle);
|
|
}
|
|
else
|
|
{
|
|
unsigned int seals;
|
|
|
|
/* Fallback to a memfd buffer */
|
|
spa_data[0].type = SPA_DATA_MemFd;
|
|
spa_data[0].flags = SPA_DATA_FLAG_READWRITE;
|
|
spa_data[0].fd = memfd_create ("mutter-screen-cast-memfd",
|
|
MFD_CLOEXEC | MFD_ALLOW_SEALING);
|
|
if (spa_data[0].fd == -1)
|
|
{
|
|
g_critical ("Can't create memfd: %m");
|
|
return;
|
|
}
|
|
spa_data[0].mapoffset = 0;
|
|
spa_data[0].maxsize = stride * priv->video_format.size.height;
|
|
|
|
if (ftruncate (spa_data[0].fd, spa_data[0].maxsize) < 0)
|
|
{
|
|
g_critical ("Can't truncate to %d: %m", spa_data[0].maxsize);
|
|
return;
|
|
}
|
|
|
|
seals = F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL;
|
|
if (fcntl (spa_data[0].fd, F_ADD_SEALS, seals) == -1)
|
|
g_warning ("Failed to add seals: %m");
|
|
|
|
spa_data[0].data = mmap (NULL,
|
|
spa_data[0].maxsize,
|
|
PROT_READ | PROT_WRITE,
|
|
MAP_SHARED,
|
|
spa_data[0].fd,
|
|
spa_data[0].mapoffset);
|
|
if (spa_data[0].data == MAP_FAILED)
|
|
{
|
|
g_critical ("Failed to mmap memory: %m");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
on_stream_remove_buffer (void *data,
|
|
struct pw_buffer *buffer)
|
|
{
|
|
MetaScreenCastStreamSrc *src = data;
|
|
MetaScreenCastStreamSrcPrivate *priv =
|
|
meta_screen_cast_stream_src_get_instance_private (src);
|
|
struct spa_buffer *spa_buffer = buffer->buffer;
|
|
struct spa_data *spa_data = spa_buffer->datas;
|
|
|
|
if (spa_data[0].type == SPA_DATA_DmaBuf)
|
|
{
|
|
if (!g_hash_table_remove (priv->dmabuf_handles, GINT_TO_POINTER (spa_data[0].fd)))
|
|
g_critical ("Failed to remove non-exported DMA buffer");
|
|
}
|
|
else if (spa_data[0].type == SPA_DATA_MemFd)
|
|
{
|
|
munmap (spa_data[0].data, spa_data[0].maxsize);
|
|
close (spa_data[0].fd);
|
|
}
|
|
}
|
|
|
|
static const struct pw_stream_events stream_events = {
|
|
PW_VERSION_STREAM_EVENTS,
|
|
.state_changed = on_stream_state_changed,
|
|
.param_changed = on_stream_param_changed,
|
|
.add_buffer = on_stream_add_buffer,
|
|
.remove_buffer = on_stream_remove_buffer,
|
|
};
|
|
|
|
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));
|
|
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;
|
|
|
|
priv->node_id = SPA_ID_INVALID;
|
|
|
|
pipewire_stream = pw_stream_new (priv->pipewire_core,
|
|
"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_add_object (
|
|
&pod_builder,
|
|
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
|
|
SPA_FORMAT_mediaType, SPA_POD_Id (SPA_MEDIA_TYPE_video),
|
|
SPA_FORMAT_mediaSubtype, SPA_POD_Id (SPA_MEDIA_SUBTYPE_raw),
|
|
SPA_FORMAT_VIDEO_format, SPA_POD_Id (SPA_VIDEO_FORMAT_BGRx),
|
|
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle (&SPA_RECTANGLE (priv->stream_width,
|
|
priv->stream_height)),
|
|
SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction (&SPA_FRACTION (0, 1)),
|
|
SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_CHOICE_RANGE_Fraction (&max_framerate,
|
|
&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,
|
|
SPA_ID_INVALID,
|
|
(PW_STREAM_FLAG_DRIVER |
|
|
PW_STREAM_FLAG_ALLOC_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_core_error (void *data,
|
|
uint32_t id,
|
|
int seq,
|
|
int res,
|
|
const char *message)
|
|
{
|
|
MetaScreenCastStreamSrc *src = data;
|
|
|
|
g_warning ("pipewire remote error: id:%u %s", id, message);
|
|
|
|
if (id == PW_ID_CORE && res == -EPIPE)
|
|
meta_screen_cast_stream_src_notify_closed (src);
|
|
}
|
|
|
|
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 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_unref ((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_core_events core_events = {
|
|
PW_VERSION_CORE_EVENTS,
|
|
.error = on_core_error,
|
|
};
|
|
|
|
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_context = pw_context_new (priv->pipewire_source->pipewire_loop,
|
|
NULL, 0);
|
|
if (!priv->pipewire_context)
|
|
{
|
|
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
|
|
"Failed to create pipewire context");
|
|
return FALSE;
|
|
}
|
|
|
|
priv->pipewire_core = pw_context_connect (priv->pipewire_context, NULL, 0);
|
|
if (!priv->pipewire_core)
|
|
{
|
|
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
|
|
"Couldn't connect pipewire context");
|
|
return FALSE;
|
|
}
|
|
|
|
pw_core_add_listener (priv->pipewire_core,
|
|
&priv->pipewire_core_listener,
|
|
&core_events,
|
|
src);
|
|
|
|
priv->pipewire_stream = create_pipewire_stream (src, error);
|
|
if (!priv->pipewire_stream)
|
|
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->dmabuf_handles, g_hash_table_destroy);
|
|
g_clear_pointer (&priv->pipewire_stream, pw_stream_destroy);
|
|
g_clear_pointer (&priv->pipewire_core, pw_core_disconnect);
|
|
g_clear_pointer (&priv->pipewire_context, pw_context_destroy);
|
|
g_source_destroy (&priv->pipewire_source->base);
|
|
g_source_unref (&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)
|
|
{
|
|
MetaScreenCastStreamSrcPrivate *priv =
|
|
meta_screen_cast_stream_src_get_instance_private (src);
|
|
|
|
priv->dmabuf_handles =
|
|
g_hash_table_new_full (NULL, NULL, NULL,
|
|
(GDestroyNotify) cogl_dma_buf_handle_free);
|
|
}
|
|
|
|
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);
|
|
}
|