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Bug#1035047: unblock: [pre-approval] xdg-desktop-portal-wlr/0.7.0-1



Control: tags -1 moreinfo confirmed

On 2023-04-28 11:26:00 +0200, Jochen Sprickerhof wrote:
> Package: release.debian.org
> Severity: normal
> User: release.debian.org@packages.debian.org
> Usertags: unblock
> X-Debbugs-Cc: xdg-desktop-portal-wlr@packages.debian.org, Birger Schacht <birger@debian.org>
> Control: affects -1 + src:xdg-desktop-portal-wlr
> 
> Please unblock package xdg-desktop-portal-wlr
> 
> [ Reason ]
> Latest Chromium in testing fails to screen share with
> xdg-desktop-portal-wlr. This is fixed with xdg-desktop-portal-wlr 0.7.0.

ACK. Please remove the moreinfo tag once the package is available in
unstable.

Cheers

> 
> [ Impact ]
> Wayland Chromium users would not be able to share their screen.
> 
> [ Tests ]
> Only manually tests that screen share works with Chromium and Firefox.
> 
> [ Risks ]
> Small no package depend on xdg-desktop-portal-wlr.
> 
> [ Checklist ]
>   [X] all changes are documented in the d/changelog
>   [X] I reviewed all changes and I approve them
>   [X] attach debdiff against the package in testing
> 
> [ Other info ]
> I think it is better to import the new upstream version instead of
> trying to extract single patches as changes are mostly for fixing this
> issue.
> 
> unblock xdg-desktop-portal-wlr/0.7.0-1

> diff -Nru xdg-desktop-portal-wlr-0.6.0/debian/changelog xdg-desktop-portal-wlr-0.7.0/debian/changelog
> --- xdg-desktop-portal-wlr-0.6.0/debian/changelog	2022-07-02 10:11:20.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/debian/changelog	2023-04-28 10:59:18.000000000 +0200
> @@ -1,3 +1,11 @@
> +xdg-desktop-portal-wlr (0.7.0-1) unstable; urgency=medium
> +
> +  * Team upload
> +  * New upstream release.
> +    - fixes screen sharing with latest chromium. (Closes: #1034735)
> +
> + -- Jochen Sprickerhof <jspricke@debian.org>  Fri, 28 Apr 2023 10:59:18 +0200
> +
>  xdg-desktop-portal-wlr (0.6.0-1) unstable; urgency=medium
>  
>    * New upstream release
> diff -Nru xdg-desktop-portal-wlr-0.6.0/include/screencast_common.h xdg-desktop-portal-wlr-0.7.0/include/screencast_common.h
> --- xdg-desktop-portal-wlr-0.6.0/include/screencast_common.h	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/include/screencast_common.h	2023-04-15 10:32:26.000000000 +0200
> @@ -11,7 +11,8 @@
>  
>  // this seems to be right based on
>  // https://github.com/flatpak/xdg-desktop-portal/blob/309a1fc0cf2fb32cceb91dbc666d20cf0a3202c2/src/screen-cast.c#L955
> -#define XDP_CAST_PROTO_VER 2
> +#define XDP_CAST_PROTO_VER 4
> +#define XDP_CAST_DATA_VER 1
>  
>  enum cursor_modes {
>    HIDDEN = 1,
> @@ -24,6 +25,12 @@
>    WINDOW = 2,
>  };
>  
> +enum persist_modes {
> +  PERSIST_NONE = 0,
> +  PERSIST_TRANSIENT = 1,
> +  PERSIST_PERMANENT = 2,
> +};
> +
>  enum buffer_type {
>    WL_SHM = 0,
>    DMABUF = 1,
> @@ -60,7 +67,8 @@
>  	bool y_invert;
>  	uint64_t tv_sec;
>  	uint32_t tv_nsec;
> -	struct xdpw_frame_damage damage;
> +	struct xdpw_frame_damage damage[4];
> +	uint32_t damage_count;
>  	struct xdpw_buffer *xdpw_buffer;
>  	struct pw_buffer *pw_buffer;
>  };
> @@ -116,7 +124,6 @@
>  	struct wl_list output_list;
>  	struct wl_registry *registry;
>  	struct zwlr_screencopy_manager_v1 *screencopy_manager;
> -	struct zxdg_output_manager_v1 *xdg_output_manager;
>  	struct wl_shm *shm;
>  	struct zwp_linux_dmabuf_v1 *linux_dmabuf;
>  	struct zwp_linux_dmabuf_feedback_v1 *linux_dmabuf_feedback;
> @@ -130,6 +137,16 @@
>  	struct wl_list screencast_instances;
>  };
>  
> +struct xdpw_screencast_target {
> +	struct xdpw_wlr_output *output;
> +	bool with_cursor;
> +};
> +
> +struct xdpw_screencast_restore_data {
> +	uint32_t version;
> +	const char *output_name;
> +};
> +
>  struct xdpw_screencast_instance {
>  	// list
>  	struct wl_list link;
> @@ -154,11 +171,10 @@
>  
>  	// wlroots
>  	struct zwlr_screencopy_frame_v1 *frame_callback;
> -	struct xdpw_wlr_output *target_output;
> +	struct xdpw_screencast_target *target;
>  	uint32_t max_framerate;
>  	struct zwlr_screencopy_frame_v1 *wlr_frame;
>  	struct xdpw_screencopy_frame_info screencopy_frame_info[2];
> -	bool with_cursor;
>  	int err;
>  	bool quit;
>  	bool teardown;
> @@ -168,17 +184,23 @@
>  	struct fps_limit_state fps_limit;
>  };
>  
> +struct xdpw_screencast_session_data {
> +	struct xdpw_screencast_instance *screencast_instance;
> +	uint32_t cursor_mode;
> +	uint32_t persist_mode;
> +};
> +
>  struct xdpw_wlr_output {
>  	struct wl_list link;
>  	uint32_t id;
>  	struct wl_output *output;
> -	struct zxdg_output_v1 *xdg_output;
>  	char *make;
>  	char *model;
>  	char *name;
>  	int width;
>  	int height;
>  	float framerate;
> +	enum wl_output_transform transformation;
>  };
>  
>  void randname(char *buf);
> @@ -195,4 +217,6 @@
>  
>  enum xdpw_chooser_types get_chooser_type(const char *chooser_type);
>  const char *chooser_type_str(enum xdpw_chooser_types chooser_type);
> +
> +struct xdpw_frame_damage merge_damage(struct xdpw_frame_damage *damage1, struct xdpw_frame_damage *damage2);
>  #endif /* SCREENCAST_COMMON_H */
> diff -Nru xdg-desktop-portal-wlr-0.6.0/include/screenshot_common.h xdg-desktop-portal-wlr-0.7.0/include/screenshot_common.h
> --- xdg-desktop-portal-wlr-0.6.0/include/screenshot_common.h	1970-01-01 01:00:00.000000000 +0100
> +++ xdg-desktop-portal-wlr-0.7.0/include/screenshot_common.h	2023-04-15 10:32:26.000000000 +0200
> @@ -0,0 +1,6 @@
> +#ifndef SCREENSHOT_COMMON_H
> +#define SCREENSHOT_COMMON_H
> +
> +#define XDP_SHOT_PROTO_VER 1
> +
> +#endif
> diff -Nru xdg-desktop-portal-wlr-0.6.0/include/wlr_screencast.h xdg-desktop-portal-wlr-0.7.0/include/wlr_screencast.h
> --- xdg-desktop-portal-wlr-0.6.0/include/wlr_screencast.h	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/include/wlr_screencast.h	2023-04-15 10:32:26.000000000 +0200
> @@ -3,15 +3,13 @@
>  
>  #include "screencast_common.h"
>  
> -#define WL_OUTPUT_VERSION 1
> +#define WL_OUTPUT_VERSION 4
>  
>  #define SC_MANAGER_VERSION 3
>  #define SC_MANAGER_VERSION_MIN 2
>  
>  #define WL_SHM_VERSION 1
>  
> -#define XDG_OUTPUT_MANAGER_VERSION 3
> -
>  #define LINUX_DMABUF_VERSION 4
>  #define LINUX_DMABUF_VERSION_MIN 3
>  
> @@ -20,12 +18,9 @@
>  int xdpw_wlr_screencopy_init(struct xdpw_state *state);
>  void xdpw_wlr_screencopy_finish(struct xdpw_screencast_context *ctx);
>  
> -struct xdpw_wlr_output *xdpw_wlr_output_find_by_name(struct wl_list *output_list,
> -	const char *name);
> -struct xdpw_wlr_output *xdpw_wlr_output_first(struct wl_list *output_list);
> -struct xdpw_wlr_output *xdpw_wlr_output_find(struct xdpw_screencast_context *ctx,
> -	struct wl_output *out, uint32_t id);
> -struct xdpw_wlr_output *xdpw_wlr_output_chooser(struct xdpw_screencast_context *ctx);
> +bool xdpw_wlr_target_chooser(struct xdpw_screencast_context *ctx, struct xdpw_screencast_target *target);
> +bool xdpw_wlr_target_from_data(struct xdpw_screencast_context *ctx, struct xdpw_screencast_target *target,
> +		struct xdpw_screencast_restore_data *data);
>  
>  void xdpw_wlr_frame_finish(struct xdpw_screencast_instance *cast);
>  void xdpw_wlr_frame_start(struct xdpw_screencast_instance *cast);
> diff -Nru xdg-desktop-portal-wlr-0.6.0/include/xdpw.h xdg-desktop-portal-wlr-0.7.0/include/xdpw.h
> --- xdg-desktop-portal-wlr-0.6.0/include/xdpw.h	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/include/xdpw.h	2023-04-15 10:32:26.000000000 +0200
> @@ -11,6 +11,7 @@
>  #endif
>  
>  #include "screencast_common.h"
> +#include "screenshot_common.h"
>  #include "config.h"
>  
>  struct xdpw_state {
> @@ -22,6 +23,7 @@
>  	uint32_t screencast_source_types; // bitfield of enum source_types
>  	uint32_t screencast_cursor_modes; // bitfield of enum cursor_modes
>  	uint32_t screencast_version;
> +	uint32_t screenshot_version;
>  	struct xdpw_config *config;
>  	int timer_poll_fd;
>  	struct wl_list timers;
> @@ -36,7 +38,7 @@
>  	struct wl_list link;
>  	sd_bus_slot *slot;
>  	char *session_handle;
> -	struct xdpw_screencast_instance *screencast_instance;
> +	struct xdpw_screencast_session_data screencast_data;
>  };
>  
>  typedef void (*xdpw_event_loop_timer_func_t)(void *data);
> diff -Nru xdg-desktop-portal-wlr-0.6.0/meson.build xdg-desktop-portal-wlr-0.7.0/meson.build
> --- xdg-desktop-portal-wlr-0.6.0/meson.build	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/meson.build	2023-04-15 10:32:26.000000000 +0200
> @@ -1,7 +1,7 @@
>  project(
>  	'xdg-desktop-portal-wlr',
>  	'c',
> -	version: '0.6.0',
> +	version: '0.7.0',
>  	license: 'MIT',
>  	meson_version: '>=0.58.0',
>  	default_options: ['c_std=c11', 'warning_level=2', 'werror=true'],
> @@ -23,7 +23,7 @@
>  inc = include_directories('include')
>  
>  rt = cc.find_library('rt')
> -pipewire = dependency('libpipewire-0.3', version: '>= 0.3.41')
> +pipewire = dependency('libpipewire-0.3', version: '>= 0.3.62')
>  wayland_client = dependency('wayland-client')
>  wayland_protos = dependency('wayland-protocols', version: '>=1.24')
>  iniparser = dependency('inih')
> @@ -36,12 +36,6 @@
>  	epoll = dependency('epoll-shim')
>  endif
>  
> -if pipewire.version() == '0.3.49'
> -        add_project_arguments(cc.get_supported_arguments([
> -                '-D_GNU_SOURCE',
> -        ]), language: 'c')
> -endif
> -
>  if get_option('sd-bus-provider') == 'auto'
>  	assert(get_option('auto_features').auto(), 'sd-bus-provider must not be set to auto since auto_features != auto')
>  	sdbus = dependency('libsystemd',
> @@ -136,7 +130,7 @@
>  	install_dir: join_paths(get_option('datadir'), 'xdg-desktop-portal', 'portals'),
>  )
>  
> -scdoc = dependency('scdoc', required: get_option('man-pages'), version: '>= 1.9.7')
> +scdoc = dependency('scdoc', required: get_option('man-pages'), version: '>= 1.9.7', native: true)
>  if scdoc.found()
>  	man_pages = ['xdg-desktop-portal-wlr.5.scd']
>  	foreach src : man_pages
> diff -Nru xdg-desktop-portal-wlr-0.6.0/README.md xdg-desktop-portal-wlr-0.7.0/README.md
> --- xdg-desktop-portal-wlr-0.6.0/README.md	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/README.md	2023-04-15 10:32:26.000000000 +0200
> @@ -1,6 +1,6 @@
>  # xdg-desktop-portal-wlr
>  
> -[![builds.sr.ht status](https://builds.sr.ht/~emersion/xdg-desktop-portal-wlr/commits.svg)](https://builds.sr.ht/~emersion/xdg-desktop-portal-wlr/commits?)
> +[![builds.sr.ht status](https://builds.sr.ht/~emersion/xdg-desktop-portal-wlr/commits/master.svg)](https://builds.sr.ht/~emersion/xdg-desktop-portal-wlr/commits/master?)
>  
>  [xdg-desktop-portal] backend for wlroots
>  
> diff -Nru xdg-desktop-portal-wlr-0.6.0/src/core/main.c xdg-desktop-portal-wlr-0.7.0/src/core/main.c
> --- xdg-desktop-portal-wlr-0.6.0/src/core/main.c	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/src/core/main.c	2023-04-15 10:32:26.000000000 +0200
> @@ -119,12 +119,18 @@
>  		.screencast_source_types = MONITOR,
>  		.screencast_cursor_modes = HIDDEN | EMBEDDED,
>  		.screencast_version = XDP_CAST_PROTO_VER,
> +		.screenshot_version = XDP_SHOT_PROTO_VER,
>  		.config = &config,
>  	};
>  
>  	wl_list_init(&state.xdpw_sessions);
>  
> -	xdpw_screenshot_init(&state);
> +	ret = xdpw_screenshot_init(&state);
> +	if (ret < 0) {
> +		logprint(ERROR, "xdpw: failed to initialize screenshot");
> +		goto error;
> +	}
> +
>  	ret = xdpw_screencast_init(&state);
>  	if (ret < 0) {
>  		logprint(ERROR, "xdpw: failed to initialize screencast");
> diff -Nru xdg-desktop-portal-wlr-0.6.0/src/core/session.c xdg-desktop-portal-wlr-0.7.0/src/core/session.c
> --- xdg-desktop-portal-wlr-0.6.0/src/core/session.c	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/src/core/session.c	2023-04-15 10:32:26.000000000 +0200
> @@ -61,7 +61,7 @@
>  	if (!sess) {
>  		return;
>  	}
> -	struct xdpw_screencast_instance *cast = sess->screencast_instance;
> +	struct xdpw_screencast_instance *cast = sess->screencast_data.screencast_instance;
>  	if (cast) {
>  		assert(cast->refcount > 0);
>  		--cast->refcount;
> diff -Nru xdg-desktop-portal-wlr-0.6.0/src/screencast/pipewire_screencast.c xdg-desktop-portal-wlr-0.7.0/src/screencast/pipewire_screencast.c
> --- xdg-desktop-portal-wlr-0.6.0/src/screencast/pipewire_screencast.c	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/src/screencast/pipewire_screencast.c	2023-04-15 10:32:26.000000000 +0200
> @@ -1,10 +1,12 @@
>  #include "pipewire_screencast.h"
>  
>  #include <pipewire/pipewire.h>
> +#include <spa/buffer/meta.h>
>  #include <spa/utils/result.h>
>  #include <spa/param/props.h>
>  #include <spa/param/format-utils.h>
>  #include <spa/param/video/format-utils.h>
> +#include <spa/pod/dynamic.h>
>  #include <sys/mman.h>
>  #include <unistd.h>
>  #include <assert.h>
> @@ -139,7 +141,7 @@
>  	return ret;
>  }
>  
> -static uint32_t build_formats(struct spa_pod_builder *b, struct xdpw_screencast_instance *cast,
> +static uint32_t build_formats(struct spa_pod_builder *b[static 2], struct xdpw_screencast_instance *cast,
>  		const struct spa_pod *params[static 2]) {
>  	uint32_t param_count;
>  	uint32_t modifier_count;
> @@ -148,17 +150,20 @@
>  	if (!cast->avoid_dmabufs &&
>  			build_modifierlist(cast, cast->screencopy_frame_info[DMABUF].format, &modifiers, &modifier_count) && modifier_count > 0) {
>  		param_count = 2;
> -		params[0] = build_format(b, xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[DMABUF].format),
> +		params[0] = build_format(b[0], xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[DMABUF].format),
>  				cast->screencopy_frame_info[DMABUF].width, cast->screencopy_frame_info[DMABUF].height, cast->framerate,
>  				modifiers, modifier_count);
> -		params[1] = build_format(b, xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[WL_SHM].format),
> +		assert(params[0] != NULL);
> +		params[1] = build_format(b[1], xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[WL_SHM].format),
>  				cast->screencopy_frame_info[WL_SHM].width, cast->screencopy_frame_info[WL_SHM].height, cast->framerate,
>  				NULL, 0);
> +		assert(params[1] != NULL);
>  	} else {
>  		param_count = 1;
> -		params[0] = build_format(b, xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[WL_SHM].format),
> +		params[0] = build_format(b[0], xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[WL_SHM].format),
>  				cast->screencopy_frame_info[WL_SHM].width, cast->screencopy_frame_info[WL_SHM].height, cast->framerate,
>  				NULL, 0);
> +		assert(params[0] != NULL);
>  	}
>  	free(modifiers);
>  	return param_count;
> @@ -196,10 +201,9 @@
>  	logprint(TRACE, "pipewire: stream parameters changed");
>  	struct xdpw_screencast_instance *cast = data;
>  	struct pw_stream *stream = cast->stream;
> -	uint8_t params_buffer[1024];
> -	struct spa_pod_builder b =
> -		SPA_POD_BUILDER_INIT(params_buffer, sizeof(params_buffer));
> -	const struct spa_pod *params[3];
> +	uint8_t params_buffer[3][1024];
> +	struct spa_pod_dynamic_builder b[3];
> +	const struct spa_pod *params[4];
>  	uint32_t blocks;
>  	uint32_t data_type;
>  
> @@ -207,6 +211,10 @@
>  		return;
>  	}
>  
> +	spa_pod_dynamic_builder_init(&b[0], params_buffer[0], sizeof(params_buffer[0]), 2048);
> +	spa_pod_dynamic_builder_init(&b[1], params_buffer[1], sizeof(params_buffer[1]), 2048);
> +	spa_pod_dynamic_builder_init(&b[2], params_buffer[2], sizeof(params_buffer[2]), 2048);
> +
>  	spa_format_video_raw_parse(param, &cast->pwr_format);
>  	cast->framerate = (uint32_t)(cast->pwr_format.max_framerate.num / cast->pwr_format.max_framerate.denom);
>  
> @@ -224,6 +232,7 @@
>  			uint32_t flags = GBM_BO_USE_RENDERING;
>  			uint64_t modifier;
>  			uint32_t n_params;
> +			struct spa_pod_builder *builder[2] = {&b[0].b, &b[1].b};
>  
>  			struct gbm_bo *bo = gbm_bo_create_with_modifiers2(cast->ctx->gbm,
>  				cast->screencopy_frame_info[cast->buffer_type].width, cast->screencopy_frame_info[cast->buffer_type].height,
> @@ -241,6 +250,9 @@
>  					flags = cast->ctx->state->config->screencast_conf.force_mod_linear ?
>  						GBM_BO_USE_RENDERING | GBM_BO_USE_LINEAR : GBM_BO_USE_RENDERING;
>  					break;
> +				case DRM_FORMAT_MOD_LINEAR:
> +					flags = GBM_BO_USE_RENDERING | GBM_BO_USE_LINEAR;
> +					break;
>  				default:
>  					continue;
>  				}
> @@ -257,18 +269,24 @@
>  			logprint(WARN, "pipewire: unable to allocate a dmabuf. Falling back to shm");
>  			cast->avoid_dmabufs = true;
>  
> -			n_params = build_formats(&b, cast, &params[0]);
> +			n_params = build_formats(builder, cast, &params[0]);
>  			pw_stream_update_params(stream, params, n_params);
> +			spa_pod_dynamic_builder_clean(&b[0]);
> +			spa_pod_dynamic_builder_clean(&b[1]);
> +			spa_pod_dynamic_builder_clean(&b[2]);
>  			return;
>  
>  fixate_format:
> -			params[0] = fixate_format(&b, xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[cast->buffer_type].format),
> +			params[0] = fixate_format(&b[2].b, xdpw_format_pw_from_drm_fourcc(cast->screencopy_frame_info[cast->buffer_type].format),
>  					cast->screencopy_frame_info[cast->buffer_type].width, cast->screencopy_frame_info[cast->buffer_type].height, cast->framerate, &modifier);
>  
> -			n_params = build_formats(&b, cast, &params[1]);
> +			n_params = build_formats(builder, cast, &params[1]);
>  			n_params++;
>  
>  			pw_stream_update_params(stream, params, n_params);
> +			spa_pod_dynamic_builder_clean(&b[0]);
> +			spa_pod_dynamic_builder_clean(&b[1]);
> +			spa_pod_dynamic_builder_clean(&b[2]);
>  			return;
>  		}
>  
> @@ -291,20 +309,37 @@
>  	logprint(DEBUG, "pipewire: size: (%u, %u)", cast->pwr_format.size.width, cast->pwr_format.size.height);
>  	logprint(DEBUG, "pipewire: max_framerate: (%u / %u)", cast->pwr_format.max_framerate.num, cast->pwr_format.max_framerate.denom);
>  
> -	params[0] = build_buffer(&b, blocks, cast->screencopy_frame_info[cast->buffer_type].size,
> +	params[0] = build_buffer(&b[0].b, blocks, cast->screencopy_frame_info[cast->buffer_type].size,
>  			cast->screencopy_frame_info[cast->buffer_type].stride, data_type);
>  
> -	params[1] = spa_pod_builder_add_object(&b,
> +	params[1] = spa_pod_builder_add_object(&b[1].b,
>  		SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
>  		SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header),
>  		SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header)));
>  
> -	pw_stream_update_params(stream, params, 2);
> +	params[2] = spa_pod_builder_add_object(&b[1].b,
> +		SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
> +		SPA_PARAM_META_type, SPA_POD_Id(SPA_META_VideoTransform),
> +		SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_videotransform)));
> +
> +	params[3] = spa_pod_builder_add_object(&b[2].b,
> +		SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
> +		SPA_PARAM_META_type, SPA_POD_Id(SPA_META_VideoDamage),
> +		SPA_PARAM_META_size, SPA_POD_CHOICE_RANGE_Int(
> +			sizeof(struct spa_meta_region) * 4,
> +			sizeof(struct spa_meta_region) * 1,
> +			sizeof(struct spa_meta_region) * 4));
> +
> +	pw_stream_update_params(stream, params, 4);
> +	spa_pod_dynamic_builder_clean(&b[0]);
> +	spa_pod_dynamic_builder_clean(&b[1]);
> +	spa_pod_dynamic_builder_clean(&b[2]);
>  }
>  
>  static void pwr_handle_stream_add_buffer(void *data, struct pw_buffer *buffer) {
>  	struct xdpw_screencast_instance *cast = data;
>  	struct spa_data *d;
> +	enum spa_data_type t;
>  
>  	logprint(DEBUG, "pipewire: add buffer event handle");
>  
> @@ -313,17 +348,17 @@
>  	// Select buffer type from negotiation result
>  	if ((d[0].type & (1u << SPA_DATA_MemFd)) > 0) {
>  		assert(cast->buffer_type == WL_SHM);
> -		d[0].type = SPA_DATA_MemFd;
> +		t = SPA_DATA_MemFd;
>  	} else if ((d[0].type & (1u << SPA_DATA_DmaBuf)) > 0) {
>  		assert(cast->buffer_type == DMABUF);
> -		d[0].type = SPA_DATA_DmaBuf;
> +		t = SPA_DATA_DmaBuf;
>  	} else {
>  		logprint(ERROR, "pipewire: unsupported buffer type");
>  		cast->err = 1;
>  		return;
>  	}
>  
> -	logprint(TRACE, "pipewire: selected buffertype %u", d[0].type);
> +	logprint(TRACE, "pipewire: selected buffertype %u", t);
>  
>  	struct xdpw_buffer *xdpw_buffer = xdpw_buffer_create(cast, cast->buffer_type, &cast->screencopy_frame_info[cast->buffer_type]);
>  	if (xdpw_buffer == NULL) {
> @@ -336,6 +371,7 @@
>  
>  	assert(xdpw_buffer->plane_count >= 0 && buffer->buffer->n_datas == (uint32_t)xdpw_buffer->plane_count);
>  	for (uint32_t plane = 0; plane < buffer->buffer->n_datas; plane++) {
> +		d[plane].type = t;
>  		d[plane].maxsize = xdpw_buffer->size[plane];
>  		d[plane].mapoffset = 0;
>  		d[plane].chunk->size = xdpw_buffer->size[plane];
> @@ -419,6 +455,44 @@
>  		logprint(TRACE, "pipewire: timestamp %"PRId64, h->pts);
>  	}
>  
> +	struct spa_meta_videotransform *vt;
> +	if ((vt = spa_buffer_find_meta_data(spa_buf, SPA_META_VideoTransform, sizeof(*vt)))) {
> +		vt->transform = cast->target->output->transformation;
> +		logprint(TRACE, "pipewire: transformation %u", vt->transform);
> +	}
> +
> +	struct spa_meta *damage;
> +	if ((damage = spa_buffer_find_meta(spa_buf, SPA_META_VideoDamage))) {
> +		struct spa_region *d_region = spa_meta_first(damage);
> +		uint32_t damage_counter = 0;
> +		do {
> +			if (damage_counter >= cast->current_frame.damage_count) {
> +				*d_region = SPA_REGION(0, 0, 0, 0);
> +				logprint(TRACE, "pipewire: end damage %u %u,%u (%ux%u)", damage_counter,
> +						d_region->position.x, d_region->position.y, d_region->size.width, d_region->size.height);
> +				break;
> +			}
> +			*d_region = SPA_REGION(cast->current_frame.damage[damage_counter].x,
> +				cast->current_frame.damage[damage_counter].y,
> +				cast->current_frame.damage[damage_counter].width,
> +				cast->current_frame.damage[damage_counter].height);
> +			logprint(TRACE, "pipewire: damage %u %u,%u (%ux%u)", damage_counter,
> +					d_region->position.x, d_region->position.y, d_region->size.width, d_region->size.height);
> +			damage_counter++;
> +		} while (spa_meta_check(d_region + 1, damage) && d_region++);
> +
> +		if (damage_counter < cast->current_frame.damage_count) {
> +			struct xdpw_frame_damage damage =
> +				{d_region->position.x, d_region->position.x, d_region->size.width, d_region->size.height};
> +			for (; damage_counter < cast->current_frame.damage_count; damage_counter++) {
> +				damage = merge_damage(&damage, &cast->current_frame.damage[damage_counter]);
> +			}
> +			*d_region = SPA_REGION(damage.x, damage.y, damage.width, damage.height);
> +			logprint(TRACE, "pipewire: collected damage %u %u,%u (%ux%u)", damage_counter,
> +					d_region->position.x, d_region->position.y, d_region->size.width, d_region->size.height);
> +		}
> +	}
> +
>  	if (buffer_corrupt) {
>  		for (uint32_t plane = 0; plane < spa_buf->n_datas; plane++) {
>  			d[plane].chunk->flags = SPA_CHUNK_FLAG_CORRUPTED;
> @@ -453,14 +527,18 @@
>  void pwr_update_stream_param(struct xdpw_screencast_instance *cast) {
>  	logprint(TRACE, "pipewire: stream update parameters");
>  	struct pw_stream *stream = cast->stream;
> -	uint8_t params_buffer[1024];
> -	struct spa_pod_builder b =
> -		SPA_POD_BUILDER_INIT(params_buffer, sizeof(params_buffer));
> +	uint8_t params_buffer[2][1024];
> +	struct spa_pod_dynamic_builder b[2];
> +	spa_pod_dynamic_builder_init(&b[0], params_buffer[0], sizeof(params_buffer[0]), 2048);
> +	spa_pod_dynamic_builder_init(&b[1], params_buffer[1], sizeof(params_buffer[1]), 2048);
>  	const struct spa_pod *params[2];
>  
> -	uint32_t n_params = build_formats(&b, cast, params);
> +	struct spa_pod_builder *builder[2] = {&b[0].b, &b[1].b};
> +	uint32_t n_params = build_formats(builder, cast, params);
>  
>  	pw_stream_update_params(stream, params, n_params);
> +	spa_pod_dynamic_builder_clean(&b[0]);
> +	spa_pod_dynamic_builder_clean(&b[1]);
>  }
>  
>  void xdpw_pwr_stream_create(struct xdpw_screencast_instance *cast) {
> @@ -469,8 +547,10 @@
>  
>  	pw_loop_enter(state->pw_loop);
>  
> -	uint8_t buffer[1024];
> -	struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
> +	uint8_t buffer[2][1024];
> +	struct spa_pod_dynamic_builder b[2];
> +	spa_pod_dynamic_builder_init(&b[0], buffer[0], sizeof(buffer[0]), 2048);
> +	spa_pod_dynamic_builder_init(&b[1], buffer[1], sizeof(buffer[1]), 2048);
>  	const struct spa_pod *params[2];
>  
>  	char name[] = "xdpw-stream-XXXXXX";
> @@ -486,7 +566,10 @@
>  	}
>  	cast->pwr_stream_state = false;
>  
> -	uint32_t param_count = build_formats(&b, cast, params);
> +	struct spa_pod_builder *builder[2] = {&b[0].b, &b[1].b};
> +	uint32_t param_count = build_formats(builder, cast, params);
> +	spa_pod_dynamic_builder_clean(&b[0]);
> +	spa_pod_dynamic_builder_clean(&b[1]);
>  
>  	pw_stream_add_listener(cast->stream, &cast->stream_listener,
>  		&pwr_stream_events, cast);
> diff -Nru xdg-desktop-portal-wlr-0.6.0/src/screencast/screencast.c xdg-desktop-portal-wlr-0.7.0/src/screencast/screencast.c
> --- xdg-desktop-portal-wlr-0.6.0/src/screencast/screencast.c	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/src/screencast/screencast.c	2023-04-15 10:32:26.000000000 +0200
> @@ -48,7 +48,7 @@
>  }
>  
>  void xdpw_screencast_instance_init(struct xdpw_screencast_context *ctx,
> -		struct xdpw_screencast_instance *cast, struct xdpw_wlr_output *out, bool with_cursor) {
> +		struct xdpw_screencast_instance *cast, struct xdpw_screencast_target *target) {
>  
>  	// only run exec_before if there's no other instance running that already ran it
>  	if (wl_list_empty(&ctx->screencast_instances)) {
> @@ -60,15 +60,14 @@
>  	}
>  
>  	cast->ctx = ctx;
> -	cast->target_output = out;
> +	cast->target = target;
>  	if (ctx->state->config->screencast_conf.max_fps > 0) {
> -		cast->max_framerate = ctx->state->config->screencast_conf.max_fps < (uint32_t)out->framerate ?
> -			ctx->state->config->screencast_conf.max_fps : (uint32_t)out->framerate;
> +		cast->max_framerate = ctx->state->config->screencast_conf.max_fps < (uint32_t)target->output->framerate ?
> +			ctx->state->config->screencast_conf.max_fps : (uint32_t)target->output->framerate;
>  	} else {
> -		cast->max_framerate = (uint32_t)out->framerate;
> +		cast->max_framerate = (uint32_t)target->output->framerate;
>  	}
>  	cast->framerate = cast->max_framerate;
> -	cast->with_cursor = with_cursor;
>  	cast->refcount = 1;
>  	cast->node_id = SPA_ID_INVALID;
>  	cast->avoid_dmabufs = false;
> @@ -93,6 +92,7 @@
>  		}
>  	}
>  
> +	free(cast->target);
>  	wl_list_remove(&cast->link);
>  	xdpw_pwr_stream_destroy(cast);
>  	assert(wl_list_length(&cast->buffer_list) == 0);
> @@ -102,13 +102,14 @@
>  void xdpw_screencast_instance_teardown(struct xdpw_screencast_instance *cast) {
>  	struct xdpw_session *sess, *tmp;
>  	wl_list_for_each_safe(sess, tmp, &cast->ctx->state->xdpw_sessions, link) {
> -		if (sess->screencast_instance == cast) {
> +		if (sess->screencast_data.screencast_instance == cast) {
>  			xdpw_session_destroy(sess);
>  		}
>  	}
>  }
>  
> -bool setup_outputs(struct xdpw_screencast_context *ctx, struct xdpw_session *sess, bool with_cursor) {
> +bool setup_target(struct xdpw_screencast_context *ctx, struct xdpw_session *sess, struct xdpw_screencast_restore_data *data) {
> +	bool target_initialized = false;
>  
>  	struct xdpw_wlr_output *output, *tmp_o;
>  	wl_list_for_each_reverse_safe(output, tmp_o, &ctx->output_list, link) {
> @@ -116,29 +117,57 @@
>  			output->make, output->model, output->id, output->name);
>  	}
>  
> -	struct xdpw_wlr_output *out;
> -	out = xdpw_wlr_output_chooser(ctx);
> -	if (!out) {
> +	struct xdpw_screencast_target *target = calloc(1, sizeof(struct xdpw_screencast_target));
> +	if (!target) {
> +		logprint(ERROR, "wlroots: unable to allocate target");
> +		return false;
> +	}
> +	target->with_cursor = sess->screencast_data.cursor_mode == EMBEDDED;
> +	if (data) {
> +		target_initialized = xdpw_wlr_target_from_data(ctx, target, data);
> +	}
> +	if (!target_initialized) {
> +		target_initialized = xdpw_wlr_target_chooser(ctx, target);
> +		//TODO: Chooser option to confirm the persist mode
> +		const char *env_persist_str = getenv("XDPW_PERSIST_MODE");
> +		if (env_persist_str) {
> +			if (strcmp(env_persist_str, "transient") == 0) {
> +				sess->screencast_data.persist_mode = sess->screencast_data.persist_mode > PERSIST_TRANSIENT
> +					? PERSIST_TRANSIENT : sess->screencast_data.persist_mode;
> +			} else if (strcmp(env_persist_str, "permanent") == 0) {
> +				sess->screencast_data.persist_mode = sess->screencast_data.persist_mode > PERSIST_PERMANENT
> +					? PERSIST_PERMANENT : sess->screencast_data.persist_mode;
> +			} else {
> +				sess->screencast_data.persist_mode = PERSIST_NONE;
> +			}
> +
> +		} else {
> +			sess->screencast_data.persist_mode = PERSIST_NONE;
> +		}
> +	}
> +	if (!target_initialized) {
>  		logprint(ERROR, "wlroots: no output found");
> +		free(target);
>  		return false;
>  	}
> +	assert(target->output);
>  
>  	// Disable screencast sharing to avoid sharing between dmabuf and shm capable clients
>  	/*
>  	struct xdpw_screencast_instance *cast, *tmp_c;
>  	wl_list_for_each_reverse_safe(cast, tmp_c, &ctx->screencast_instances, link) {
>  		logprint(INFO, "xdpw: existing screencast instance: %d %s cursor",
> -			cast->target_output->id,
> -			cast->with_cursor ? "with" : "without");
> +			cast->target->output->id,
> +			cast->target->with_cursor ? "with" : "without");
>  
> -		if (cast->target_output->id == out->id && cast->with_cursor == with_cursor) {
> +		if (cast->target->output->id == target->output->id && cast->target->with_cursor == target->with_cursor) {
>  			if (cast->refcount == 0) {
>  				logprint(DEBUG,
>  					"xdpw: matching cast instance found, "
>  					"but is already scheduled for destruction, skipping");
>  			}
>  			else {
> -				sess->screencast_instance = cast;
> +				sess->screencast_data.screencast_instance = cast;
>  				++cast->refcount;
>  			}
>  			logprint(INFO, "xdpw: screencast instance %p now has %d references",
> @@ -147,13 +176,12 @@
>  	}
>  	*/
>  
> -	if (!sess->screencast_instance) {
> -		sess->screencast_instance = calloc(1, sizeof(struct xdpw_screencast_instance));
> -		xdpw_screencast_instance_init(ctx, sess->screencast_instance,
> -			out, with_cursor);
> +	if (!sess->screencast_data.screencast_instance) {
> +		sess->screencast_data.screencast_instance = calloc(1, sizeof(struct xdpw_screencast_instance));
> +		xdpw_screencast_instance_init(ctx, sess->screencast_data.screencast_instance, target);
>  	}
>  	logprint(INFO, "wlroots: output: %s",
> -		sess->screencast_instance->target_output->name);
> +		sess->screencast_data.screencast_instance->target->output->name);
>  
>  	return true;
>  
> @@ -276,9 +304,6 @@
>  
>  	logprint(INFO, "dbus: select sources method invoked");
>  
> -	// default to embedded cursor mode if not specified
> -	bool cursor_embedded = true;
> -
>  	char *request_handle, *session_handle, *app_id;
>  	ret = sd_bus_message_read(msg, "oos", &request_handle, &session_handle, &app_id);
>  	if (ret < 0) {
> @@ -293,8 +318,26 @@
>  	logprint(INFO, "dbus: session_handle: %s", session_handle);
>  	logprint(INFO, "dbus: app_id: %s", app_id);
>  
> +	sess = NULL;
> +	wl_list_for_each_reverse_safe(sess, tmp_s, &state->xdpw_sessions, link) {
> +		if (strcmp(sess->session_handle, session_handle) == 0) {
> +				logprint(DEBUG, "dbus: select sources: found matching session %s", sess->session_handle);
> +				break;
> +		}
> +	}
> +	if (!sess) {
> +		logprint(WARN, "dbus: select sources: no matching session %s found", sess->session_handle);
> +		goto error;
> +	}
> +
> +	// default to embedded cursor mode if not specified
> +	sess->screencast_data.cursor_mode = EMBEDDED;
> +	// default to no persist if not specified
> +	sess->screencast_data.persist_mode = PERSIST_NONE;
> +
>  	char *key;
>  	int innerRet = 0;
> +	struct xdpw_screencast_restore_data restore_data = {0};
>  	while ((ret = sd_bus_message_enter_container(msg, 'e', "sv")) > 0) {
>  		innerRet = sd_bus_message_read(msg, "s", &key);
>  		if (innerRet < 0) {
> @@ -314,16 +357,87 @@
>  			}
>  			logprint(INFO, "dbus: option types:%x", mask);
>  		} else if (strcmp(key, "cursor_mode") == 0) {
> -			uint32_t cursor_mode;
> -			sd_bus_message_read(msg, "v", "u", &cursor_mode);
> -			if (cursor_mode & HIDDEN) {
> -				cursor_embedded = false;
> -			}
> -			if (cursor_mode & METADATA) {
> +			sd_bus_message_read(msg, "v", "u", &sess->screencast_data.cursor_mode);
> +			if (sess->screencast_data.cursor_mode & METADATA) {
>  				logprint(ERROR, "dbus: unsupported cursor mode requested, cancelling");
>  				goto error;
>  			}
> -			logprint(INFO, "dbus: option cursor_mode:%x", cursor_mode);
> +			logprint(INFO, "dbus: option cursor_mode:%x", sess->screencast_data.cursor_mode);
> +		} else if (strcmp(key, "restore_data") == 0) {
> +			logprint(INFO, "dbus: restore data available");
> +			char *portal_vendor;
> +			innerRet = sd_bus_message_enter_container(msg, 'v', "(suv)");
> +			if (innerRet < 0) {
> +				logprint(ERROR, "dbus: error entering variant");
> +				return innerRet;
> +			}
> +			innerRet = sd_bus_message_enter_container(msg, 'r', "suv");
> +			if (innerRet < 0) {
> +				logprint(ERROR, "dbus: error entering struct");
> +				return innerRet;
> +			}
> +			sd_bus_message_read(msg, "s", &portal_vendor);
> +			if (strcmp(portal_vendor, "wlroots") != 0) {
> +				logprint(INFO, "dbus: skipping restore_data from another vendor (%s)", portal_vendor);
> +				sd_bus_message_skip(msg, "uv");
> +				continue;
> +			}
> +			sd_bus_message_read(msg, "u", &restore_data.version);
> +			if (restore_data.version == 1) {
> +				innerRet = sd_bus_message_enter_container(msg, 'v', "a{sv}");
> +				if (innerRet < 0) {
> +					return innerRet;
> +				}
> +				innerRet = sd_bus_message_enter_container(msg, 'a', "{sv}");
> +				if (innerRet < 0) {
> +					return innerRet;
> +				}
> +				logprint(INFO, "dbus: restoring session from data");
> +				int rdRet;
> +				char *rdKey;
> +				while ((innerRet = sd_bus_message_enter_container(msg, 'e', "sv")) > 0) {
> +					rdRet = sd_bus_message_read(msg, "s", &rdKey);
> +					if (rdRet < 0) {
> +						return rdRet;
> +					}
> +					if (strcmp(rdKey, "output_name") == 0) {
> +						sd_bus_message_read(msg, "v", "s", &restore_data.output_name);
> +						logprint(INFO, "dbus: option restore_data.output_name: %s", restore_data.output_name);
> +					} else {
> +						logprint(WARN, "dbus: unknown option %s", rdKey);
> +						sd_bus_message_skip(msg, "v");
> +					}
> +					innerRet = sd_bus_message_exit_container(msg); // dictionary
> +					if (innerRet < 0) {
> +						return innerRet;
> +					}
> +				}
> +				if (innerRet < 0) {
> +					return innerRet;
> +				}
> +				innerRet = sd_bus_message_exit_container(msg); //array
> +				if (innerRet < 0) {
> +					return innerRet;
> +				}
> +				innerRet = sd_bus_message_exit_container(msg); //variant
> +				if (innerRet < 0) {
> +					return innerRet;
> +				}
> +			} else {
> +				sd_bus_message_skip(msg, "v");
> +				logprint(ERROR, "Unknown restore_data version: %u", restore_data.version);
> +			}
> +			innerRet = sd_bus_message_exit_container(msg); // struct
> +			if (innerRet < 0) {
> +				return innerRet;
> +			}
> +			innerRet = sd_bus_message_exit_container(msg); // variant
> +			if (innerRet < 0) {
> +				return innerRet;
> +			}
> +		} else if (strcmp(key, "persist_mode") == 0) {
> +			sd_bus_message_read(msg, "v", "u", &sess->screencast_data.persist_mode);
> +			logprint(INFO, "dbus: option persist_mode:%u", sess->screencast_data.persist_mode);
>  		} else {
>  			logprint(WARN, "dbus: unknown option %s", key);
>  			sd_bus_message_skip(msg, "v");
> @@ -342,13 +456,7 @@
>  		return ret;
>  	}
>  
> -	bool output_selection_canceled = 1;
> -	wl_list_for_each_reverse_safe(sess, tmp_s, &state->xdpw_sessions, link) {
> -		if (strcmp(sess->session_handle, session_handle) == 0) {
> -				logprint(DEBUG, "dbus: select sources: found matching session %s", sess->session_handle);
> -				output_selection_canceled = !setup_outputs(ctx, sess, cursor_embedded);
> -		}
> -	}
> +	bool output_selection_canceled = !setup_target(ctx, sess, restore_data.version > 0 ? &restore_data : NULL);
>  
>  	ret = sd_bus_message_new_method_return(msg, &reply);
>  	if (ret < 0) {
> @@ -370,11 +478,8 @@
>  	return 0;
>  
>  error:
> -	wl_list_for_each_reverse_safe(sess, tmp_s, &state->xdpw_sessions, link) {
> -		if (strcmp(sess->session_handle, session_handle) == 0) {
> -				logprint(DEBUG, "dbus: select sources error: destroying matching session %s", sess->session_handle);
> -				xdpw_session_destroy(sess);
> -		}
> +	if (sess) {
> +		xdpw_session_destroy(sess);
>  	}
>  
>  	ret = sd_bus_message_new_method_return(msg, &reply);
> @@ -443,7 +548,7 @@
>  	wl_list_for_each_reverse_safe(sess, tmp_s, &state->xdpw_sessions, link) {
>  		if (strcmp(sess->session_handle, session_handle) == 0) {
>  				logprint(DEBUG, "dbus: start: found matching session %s", sess->session_handle);
> -				cast = sess->screencast_instance;
> +				cast = sess->screencast_data.screencast_instance;
>  		}
>  	}
>  	if (!cast) {
> @@ -472,12 +577,41 @@
>  	}
>  
>  	logprint(DEBUG, "dbus: start: returning node %d", (int)cast->node_id);
> -	ret = sd_bus_message_append(reply, "ua{sv}", PORTAL_RESPONSE_SUCCESS, 1,
> +	ret = sd_bus_message_append(reply, "u", PORTAL_RESPONSE_SUCCESS);
> +	if (ret < 0) {
> +		return ret;
> +	}
> +	ret = sd_bus_message_open_container(reply, 'a', "{sv}");
> +	if (ret < 0) {
> +		return ret;
> +	}
> +	ret = sd_bus_message_append(reply, "{sv}",
>  		"streams", "a(ua{sv})", 1,
> -		cast->node_id, 2,
> +		cast->node_id, 3,
>  		"position", "(ii)", 0, 0,
> -		"size", "(ii)", cast->screencopy_frame_info[WL_SHM].width, cast->screencopy_frame_info[WL_SHM].height);
> +		"size", "(ii)", cast->screencopy_frame_info[WL_SHM].width, cast->screencopy_frame_info[WL_SHM].height,
> +		"source_type", "u", 1 << MONITOR);
> +	if (ret < 0) {
> +		return ret;
> +	}
> +	ret = sd_bus_message_append(reply, "{sv}",
> +		"persist_mode", "u", sess->screencast_data.persist_mode);
> +	if (ret < 0) {
> +		return ret;
> +	}
> +	if (sess->screencast_data.persist_mode != PERSIST_NONE) {
> +		struct xdpw_screencast_restore_data restore_data;
> +		restore_data.output_name = cast->target->output->name;
> +		ret = sd_bus_message_append(reply, "{sv}",
> +			"restore_data", "(suv)",
> +			"wlroots", XDP_CAST_DATA_VER,
> +			"a{sv}", 1, "output_name", "s", restore_data.output_name);
> +		if (ret < 0) {
> +			return ret;
> +		}
> +	}
>  
> +	ret = sd_bus_message_close_container(reply);
>  	if (ret < 0) {
>  		return ret;
>  	}
> diff -Nru xdg-desktop-portal-wlr-0.6.0/src/screencast/screencast_common.c xdg-desktop-portal-wlr-0.7.0/src/screencast/screencast_common.c
> --- xdg-desktop-portal-wlr-0.6.0/src/screencast/screencast_common.c	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/src/screencast/screencast_common.c	2023-04-15 10:32:26.000000000 +0200
> @@ -153,6 +153,12 @@
>  				frame_info->format, flags);
>  		}
>  
> +		// Fallback for linear buffers via the implicit api
> +		if (buffer->bo == NULL && cast->pwr_format.modifier == DRM_FORMAT_MOD_LINEAR) {
> +			buffer->bo = gbm_bo_create(cast->ctx->gbm, frame_info->width, frame_info->height,
> +					frame_info->format, flags | GBM_BO_USE_LINEAR);
> +		}
> +
>  		if (buffer->bo == NULL) {
>  			logprint(ERROR, "xdpw: failed to create gbm_bo");
>  			free(buffer);
> @@ -404,3 +410,17 @@
>  	fprintf(stderr, "Could not find chooser type %d\n", chooser_type);
>  	abort();
>  }
> +
> +struct xdpw_frame_damage merge_damage(struct xdpw_frame_damage *damage1, struct xdpw_frame_damage *damage2) {
> +	struct xdpw_frame_damage damage;
> +	uint32_t x0, y0;
> +	damage.x = damage1->x < damage2->y ? damage1->x : damage2->x;
> +	damage.y = damage1->y < damage2->y ? damage1->y : damage2->y;
> +
> +	x0 = damage1->x + damage1->width < damage2->x + damage2->width ? damage2->x + damage2->width : damage1->x + damage1->width;
> +	y0 = damage1->y + damage1->height < damage2->y + damage2->height ? damage2->y + damage2->height : damage1->y + damage1->height;
> +	damage.width = x0 - damage.x;
> +	damage.height = y0 - damage.y;
> +
> +	return damage;
> +}
> diff -Nru xdg-desktop-portal-wlr-0.6.0/src/screencast/wlr_screencast.c xdg-desktop-portal-wlr-0.7.0/src/screencast/wlr_screencast.c
> --- xdg-desktop-portal-wlr-0.6.0/src/screencast/wlr_screencast.c	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/src/screencast/wlr_screencast.c	2023-04-15 10:32:26.000000000 +0200
> @@ -2,7 +2,6 @@
>  
>  #include "linux-dmabuf-unstable-v1-client-protocol.h"
>  #include "wlr-screencopy-unstable-v1-client-protocol.h"
> -#include "xdg-output-unstable-v1-client-protocol.h"
>  #include <fcntl.h>
>  #include <limits.h>
>  #include <stdbool.h>
> @@ -174,6 +173,7 @@
>  		return;
>  	}
>  
> +	cast->current_frame.damage_count = 0;
>  	zwlr_screencopy_frame_v1_copy_with_damage(frame, cast->current_frame.xdpw_buffer->buffer);
>  	logprint(TRACE, "wlroots: frame copied");
>  
> @@ -200,10 +200,13 @@
>  
>  	logprint(TRACE, "wlroots: damage event handler");
>  
> -	cast->current_frame.damage.x = x;
> -	cast->current_frame.damage.y = y;
> -	cast->current_frame.damage.width = width;
> -	cast->current_frame.damage.height = height;
> +	logprint(TRACE, "wlroots: damage %"PRIu32": %"PRIu32",%"PRIu32"x%"PRIu32",%"PRIu32, cast->current_frame.damage_count, x, y, width, height);
> +	struct xdpw_frame_damage damage = {x, y, width, height};
> +	if (cast->current_frame.damage_count < 4) {
> +		cast->current_frame.damage[cast->current_frame.damage_count++] = damage;
> +	} else {
> +		cast->current_frame.damage[3] = merge_damage(&cast->current_frame.damage[3], &damage);
> +	}
>  }
>  
>  static void wlr_frame_ready(void *data, struct zwlr_screencopy_frame_v1 *frame,
> @@ -250,7 +253,7 @@
>  
>  void xdpw_wlr_register_cb(struct xdpw_screencast_instance *cast) {
>  	cast->frame_callback = zwlr_screencopy_manager_v1_capture_output(
> -		cast->ctx->screencopy_manager, cast->with_cursor, cast->target_output->output);
> +		cast->ctx->screencopy_manager, cast->target->with_cursor, cast->target->output->output);
>  
>  	zwlr_screencopy_frame_v1_add_listener(cast->frame_callback,
>  		&wlr_frame_listener, cast);
> @@ -263,6 +266,7 @@
>  	struct xdpw_wlr_output *output = data;
>  	output->make = strdup(make);
>  	output->model = strdup(model);
> +	output->transformation = transform;
>  }
>  
>  static void wlr_output_handle_mode(void *data, struct wl_output *wl_output,
> @@ -282,55 +286,54 @@
>  	/* Nothing to do */
>  }
>  
> +static void wlr_output_handle_name(void *data, struct wl_output *wl_output,
> +		const char *name) {
> +	struct xdpw_wlr_output *output = data;
> +	output->name = strdup(name);
> +}
> +
> +static void wlr_output_handle_description(void *data, struct wl_output *wl_output,
> +		const char *description) {
> +	/* Nothing to do */
> +}
> +
>  static const struct wl_output_listener wlr_output_listener = {
>  	.geometry = wlr_output_handle_geometry,
>  	.mode = wlr_output_handle_mode,
>  	.done = wlr_output_handle_done,
>  	.scale = wlr_output_handle_scale,
> +	.name = wlr_output_handle_name,
> +	.description = wlr_output_handle_description,
>  };
>  
> -static void wlr_xdg_output_name(void *data, struct zxdg_output_v1 *xdg_output,
> -		const char *name) {
> -	struct xdpw_wlr_output *output = data;
> -
> -	output->name = strdup(name);
> -};
> -
> -static void noop() {
> -	// This space intentionally left blank
> +static struct xdpw_wlr_output *xdpw_wlr_output_first(struct wl_list *output_list) {
> +	struct xdpw_wlr_output *output, *tmp;
> +	wl_list_for_each_safe(output, tmp, output_list, link) {
> +		return output;
> +	}
> +	return NULL;
>  }
>  
> -static const struct zxdg_output_v1_listener wlr_xdg_output_listener = {
> -	.logical_position = noop,
> -	.logical_size = noop,
> -	.done = NULL, /* Deprecated */
> -	.description = noop,
> -	.name = wlr_xdg_output_name,
> -};
> -
> -static void wlr_add_xdg_output_listener(struct xdpw_wlr_output *output,
> -		struct zxdg_output_v1 *xdg_output) {
> -	output->xdg_output = xdg_output;
> -	zxdg_output_v1_add_listener(output->xdg_output, &wlr_xdg_output_listener,
> -		output);
> -}
> -
> -static void wlr_init_xdg_output(struct xdpw_screencast_context *ctx,
> -		struct xdpw_wlr_output *output) {
> -	struct zxdg_output_v1 *xdg_output =
> -		zxdg_output_manager_v1_get_xdg_output(ctx->xdg_output_manager,
> -			output->output);
> -	wlr_add_xdg_output_listener(output, xdg_output);
> +static struct xdpw_wlr_output *xdpw_wlr_output_find_by_name(struct wl_list *output_list,
> +		const char *name) {
> +	struct xdpw_wlr_output *output, *tmp;
> +	wl_list_for_each_safe(output, tmp, output_list, link) {
> +		if (strcmp(output->name, name) == 0) {
> +			return output;
> +		}
> +	}
> +	return NULL;
>  }
>  
> -static void wlr_init_xdg_outputs(struct xdpw_screencast_context *ctx) {
> +static struct xdpw_wlr_output *xdpw_wlr_output_find(struct xdpw_screencast_context *ctx,
> +		struct wl_output *out, uint32_t id) {
>  	struct xdpw_wlr_output *output, *tmp;
>  	wl_list_for_each_safe(output, tmp, &ctx->output_list, link) {
> -		if (output->xdg_output) {
> -			continue;
> +		if ((output->output == out) || (output->id == id)) {
> +			return output;
>  		}
> -		wlr_init_xdg_output(ctx, output);
>  	}
> +	return NULL;
>  }
>  
>  static pid_t spawn_chooser(char *cmd, int chooser_in[2], int chooser_out[2]) {
> @@ -493,7 +496,7 @@
>  	return xdpw_wlr_output_first(output_list);
>  }
>  
> -struct xdpw_wlr_output *xdpw_wlr_output_chooser(struct xdpw_screencast_context *ctx) {
> +static struct xdpw_wlr_output *xdpw_wlr_output_chooser(struct xdpw_screencast_context *ctx) {
>  	switch (ctx->state->config->screencast_conf.chooser_type) {
>  	case XDPW_CHOOSER_DEFAULT:
>  		return wlr_output_chooser_default(&ctx->output_list);
> @@ -531,41 +534,27 @@
>  	return NULL;
>  }
>  
> -struct xdpw_wlr_output *xdpw_wlr_output_first(struct wl_list *output_list) {
> -	struct xdpw_wlr_output *output, *tmp;
> -	wl_list_for_each_safe(output, tmp, output_list, link) {
> -		return output;
> -	}
> -	return NULL;
> +bool xdpw_wlr_target_chooser(struct xdpw_screencast_context *ctx, struct xdpw_screencast_target *target) {
> +	target->output = xdpw_wlr_output_chooser(ctx);
> +	return target->output != NULL;
>  }
>  
> -struct xdpw_wlr_output *xdpw_wlr_output_find_by_name(struct wl_list *output_list,
> -		const char *name) {
> -	struct xdpw_wlr_output *output, *tmp;
> -	wl_list_for_each_safe(output, tmp, output_list, link) {
> -		if (strcmp(output->name, name) == 0) {
> -			return output;
> -		}
> -	}
> -	return NULL;
> -}
> +bool xdpw_wlr_target_from_data(struct xdpw_screencast_context *ctx, struct xdpw_screencast_target *target,
> +		struct xdpw_screencast_restore_data *data) {
> +	struct xdpw_wlr_output *out = NULL;
> +	out = xdpw_wlr_output_find_by_name(&ctx->output_list, data->output_name);
>  
> -struct xdpw_wlr_output *xdpw_wlr_output_find(struct xdpw_screencast_context *ctx,
> -		struct wl_output *out, uint32_t id) {
> -	struct xdpw_wlr_output *output, *tmp;
> -	wl_list_for_each_safe(output, tmp, &ctx->output_list, link) {
> -		if ((output->output == out) || (output->id == id)) {
> -			return output;
> -		}
> +	if (!out) {
> +		return false;
>  	}
> -	return NULL;
> +	target->output = out;
> +	return true;
>  }
>  
>  static void wlr_remove_output(struct xdpw_wlr_output *out) {
>  	free(out->name);
>  	free(out->make);
>  	free(out->model);
> -	zxdg_output_v1_destroy(out->xdg_output);
>  	wl_output_destroy(out->output);
>  	wl_list_remove(&out->link);
>  	free(out);
> @@ -598,6 +587,10 @@
>  	wlr_format_modifier_pair_add(ctx, format, modifier);
>  }
>  
> +static void noop() {
> +       // This space intentionally left blank
> +}
> +
>  static const struct zwp_linux_dmabuf_v1_listener linux_dmabuf_listener = {
>  	.format = noop,
>  	.modifier = linux_dmabuf_handle_modifier,
> @@ -746,9 +739,6 @@
>  
>  		wl_output_add_listener(output->output, &wlr_output_listener, output);
>  		wl_list_insert(&ctx->output_list, &output->link);
> -		if (ctx->xdg_output_manager) {
> -			wlr_init_xdg_output(ctx, output);
> -		}
>  	}
>  
>  	if (!strcmp(interface, zwlr_screencopy_manager_v1_interface.name)) {
> @@ -768,11 +758,6 @@
>  		ctx->shm = wl_registry_bind(reg, id, &wl_shm_interface, WL_SHM_VERSION);
>  	}
>  
> -	if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0) {
> -		logprint(DEBUG, "wlroots: |-- registered to interface %s (Version %u)", interface, XDG_OUTPUT_MANAGER_VERSION);
> -		ctx->xdg_output_manager =
> -			wl_registry_bind(reg, id, &zxdg_output_manager_v1_interface, XDG_OUTPUT_MANAGER_VERSION);
> -	}
>  	if (strcmp(interface, zwp_linux_dmabuf_v1_interface.name) == 0) {
>  		uint32_t version = ver;
>  		if (LINUX_DMABUF_VERSION < ver) {
> @@ -801,7 +786,7 @@
>  		logprint(DEBUG, "wlroots: output removed (%s)", output->name);
>  		struct xdpw_screencast_instance *cast, *tmp;
>  		wl_list_for_each_safe(cast, tmp, &ctx->screencast_instances, link) {
> -			if (cast->target_output == output) {
> +			if (cast->target->output == output) {
>  				// screencopy might be in process for this instance
>  				wlr_frame_free(cast);
>  				// instance might be waiting for wakeup by the frame limiter
> @@ -844,18 +829,11 @@
>  
>  	logprint(DEBUG, "wayland: registry listeners run");
>  
> -	// make sure our wlroots supports xdg_output_manager
> -	if (!ctx->xdg_output_manager) {
> -		logprint(ERROR, "Compositor doesn't support %s!",
> -			zxdg_output_manager_v1_interface.name);
> -		return -1;
> -	}
> -
> -	wlr_init_xdg_outputs(ctx);
> +	if (ctx->linux_dmabuf_feedback) {
> +		wl_display_roundtrip(state->wl_display);
>  
> -	wl_display_roundtrip(state->wl_display);
> -
> -	logprint(DEBUG, "wayland: xdg output listeners run");
> +		logprint(DEBUG, "wayland: dmabuf_feedback listeners run");
> +	}
>  
>  	// make sure our wlroots supports shm protocol
>  	if (!ctx->shm) {
> @@ -887,7 +865,6 @@
>  	struct xdpw_wlr_output *output, *tmp_o;
>  	wl_list_for_each_safe(output, tmp_o, &ctx->output_list, link) {
>  		wl_list_remove(&output->link);
> -		zxdg_output_v1_destroy(output->xdg_output);
>  		wl_output_destroy(output->output);
>  	}
>  
> @@ -902,9 +879,6 @@
>  	if (ctx->shm) {
>  		wl_shm_destroy(ctx->shm);
>  	}
> -	if (ctx->xdg_output_manager) {
> -		zxdg_output_manager_v1_destroy(ctx->xdg_output_manager);
> -	}
>  	if (ctx->gbm) {
>  		int fd = gbm_device_get_fd(ctx->gbm);
>  		gbm_device_destroy(ctx->gbm);
> diff -Nru xdg-desktop-portal-wlr-0.6.0/src/screenshot/screenshot.c xdg-desktop-portal-wlr-0.7.0/src/screenshot/screenshot.c
> --- xdg-desktop-portal-wlr-0.6.0/src/screenshot/screenshot.c	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/src/screenshot/screenshot.c	2023-04-15 10:32:26.000000000 +0200
> @@ -286,6 +286,9 @@
>  	SD_BUS_VTABLE_START(0),
>  	SD_BUS_METHOD("Screenshot", "ossa{sv}", "ua{sv}", method_screenshot, SD_BUS_VTABLE_UNPRIVILEGED),
>  	SD_BUS_METHOD("PickColor", "ossa{sv}", "ua{sv}", method_pick_color, SD_BUS_VTABLE_UNPRIVILEGED),
> +	SD_BUS_PROPERTY("version", "u", NULL,
> +		offsetof(struct xdpw_state, screenshot_version),
> +		SD_BUS_VTABLE_PROPERTY_CONST),
>  	SD_BUS_VTABLE_END
>  };
>  
> @@ -293,5 +296,5 @@
>  	// TODO: cleanup
>  	sd_bus_slot *slot = NULL;
>  	return sd_bus_add_object_vtable(state->bus, &slot, object_path, interface_name,
> -		screenshot_vtable, NULL);
> +		screenshot_vtable, state);
>  }
> diff -Nru xdg-desktop-portal-wlr-0.6.0/wlr.portal xdg-desktop-portal-wlr-0.7.0/wlr.portal
> --- xdg-desktop-portal-wlr-0.6.0/wlr.portal	2022-06-09 11:25:25.000000000 +0200
> +++ xdg-desktop-portal-wlr-0.7.0/wlr.portal	2023-04-15 10:32:26.000000000 +0200
> @@ -1,4 +1,4 @@
>  [portal]
>  DBusName=org.freedesktop.impl.portal.desktop.wlr
>  Interfaces=org.freedesktop.impl.portal.Screenshot;org.freedesktop.impl.portal.ScreenCast;
> -UseIn=wlroots;sway;Wayfire;river;phosh;
> +UseIn=wlroots;sway;Wayfire;river;phosh;Hyprland;


-- 
Sebastian Ramacher


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