From c0e233955568fbea4e859336f6d3d14d51294d7c Mon Sep 17 00:00:00 2001
From: vaxerski <43317083+vaxerski@users.noreply.github.com>
Date: Tue, 25 Apr 2023 17:16:21 +0100
Subject: [PATCH] screencast: send transform to pw

---
 include/screencast_common.h          |  1 +
 meson.build                          |  8 +------
 src/screencast/pipewire_screencast.c | 32 +++++++++++++++++++---------
 src/screencast/wlr_screencast.c      |  1 +
 4 files changed, 25 insertions(+), 17 deletions(-)

diff --git a/include/screencast_common.h b/include/screencast_common.h
index b8667ca..23a67ef 100644
--- a/include/screencast_common.h
+++ b/include/screencast_common.h
@@ -149,6 +149,7 @@ struct xdpw_wlr_output {
     int width;
     int height;
     float framerate;
+    enum wl_output_transform transform;
 };
 
 struct xdpw_share {
diff --git a/meson.build b/meson.build
index bca1ac8..8d8f2a9 100644
--- a/meson.build
+++ b/meson.build
@@ -24,7 +24,7 @@ add_project_arguments('-DSYSCONFDIR="@0@"'.format(join_paths(prefix, sysconfdir)
 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')
 hyprland_protos = dependency('hyprland-protocols', version: '>=0.2', fallback: 'hyprland-protocols')
 wayland_client = dependency('wayland-client')
 wayland_protos = dependency('wayland-protocols', version: '>=1.24')
@@ -39,12 +39,6 @@ if (not cc.has_function('timerfd_create', prefix: '#include <sys/timerfd.h>') or
 	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',
diff --git a/src/screencast/pipewire_screencast.c b/src/screencast/pipewire_screencast.c
index e71aef5..ed1ce9d 100644
--- a/src/screencast/pipewire_screencast.c
+++ b/src/screencast/pipewire_screencast.c
@@ -1,19 +1,20 @@
 #include "pipewire_screencast.h"
 
-#include <pipewire/pipewire.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>
 #include <libdrm/drm_fourcc.h>
+#include <pipewire/pipewire.h>
+#include <spa/buffer/meta.h>
+#include <spa/param/format-utils.h>
+#include <spa/param/props.h>
+#include <spa/param/video/format-utils.h>
+#include <spa/pod/dynamic.h>
+#include <spa/utils/result.h>
+#include <sys/mman.h>
+#include <unistd.h>
 
+#include "logger.h"
 #include "wlr_screencast.h"
 #include "xdpw.h"
-#include "logger.h"
 
 static struct spa_pod *build_buffer(struct spa_pod_builder *b, uint32_t blocks, uint32_t size,
 		uint32_t stride, uint32_t datatype) {
@@ -316,7 +317,12 @@ fixate_format:
 		SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header),
 		SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header)));
 
-	params[2] = spa_pod_builder_add_object(&b[2].b,
+    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(
@@ -449,6 +455,12 @@ void xdpw_pwr_enqueue_buffer(struct xdpw_screencast_instance *cast) {
 		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->transform;
+		logprint(TRACE, "pipewire: transform %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);
diff --git a/src/screencast/wlr_screencast.c b/src/screencast/wlr_screencast.c
index cb4634d..c86ce1d 100644
--- a/src/screencast/wlr_screencast.c
+++ b/src/screencast/wlr_screencast.c
@@ -551,6 +551,7 @@ static void wlr_output_handle_geometry(void *data, struct wl_output *wl_output,
     struct xdpw_wlr_output *output = data;
     output->make = strdup(make);
     output->model = strdup(model);
+    output->transform = transform;
 }
 
 static void wlr_output_handle_mode(void *data, struct wl_output *wl_output, uint32_t flags, int32_t width, int32_t height, int32_t refresh) {