[PATCH V4 3/7] weston: Add enable-wrandr option and export common functions

[Quanxian Wang]

When starting weston with parameter --enable-wrandr,
it will automatically load wrandr.so module. This is
for QA testing and Admin configuration.

weston_output_transform_scale_init will be used by
weston randr module.

Signed-off-by: Quanxian Wang <quanxian.wang at intel.com>
---
 src/compositor.c | 35 +++++++++++++++++++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

diff --git a/src/compositor.c b/src/compositor.c
index c031edc..5708e4e 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -88,7 +88,7 @@ sigchld_handler(int signal_number, void *data)
 	return 1;
 }
 
-static void
+WL_EXPORT void
 weston_output_transform_scale_init(struct weston_output *output,
 				   uint32_t transform, uint32_t scale);
 
@@ -3297,7 +3297,7 @@ weston_output_update_matrix(struct weston_output *output)
 	output->dirty = 0;
 }
 
-static void
+WL_EXPORT void
 weston_output_transform_scale_init(struct weston_output *output, uint32_t transform, uint32_t scale)
 {
 	output->transform = transform;
@@ -4140,10 +4140,12 @@ int main(int argc, char *argv[])
 	char *log = NULL;
 	int32_t idle_time = 300;
 	int32_t help = 0;
+	int32_t enable_wrandr = 0;
 	char *socket_name = "wayland-0";
 	int32_t version = 0;
 	struct weston_config *config;
 	struct weston_config_section *section;
+	struct weston_output *last, *output;
 
 	const struct weston_option core_options[] = {
 		{ WESTON_OPTION_STRING, "backend", 'B', &option_backend },
@@ -4151,6 +4153,7 @@ int main(int argc, char *argv[])
 		{ WESTON_OPTION_STRING, "socket", 'S', &socket_name },
 		{ WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time },
 		{ WESTON_OPTION_STRING, "modules", 0, &option_modules },
+		{ WESTON_OPTION_STRING, "enable-wrandr", 0, &enable_wrandr},
 		{ WESTON_OPTION_STRING, "log", 0, &log },
 		{ WESTON_OPTION_BOOLEAN, "help", 'h', &help },
 		{ WESTON_OPTION_BOOLEAN, "version", 0, &version },
@@ -4233,6 +4236,34 @@ int main(int argc, char *argv[])
 	ec->idle_time = idle_time;
 	ec->default_pointer_grab = NULL;
 
+	/* Initialize all links of output */
+	last = NULL;
+	wl_list_for_each(output, &ec->output_list, link) {
+		if (last) {
+			last->hlink.next = &output->hlink;
+			output->hlink.prev = &last->hlink;
+		} else {
+			output->hlink.prev = NULL;
+		}
+		last = output;
+	}
+
+	/* Set default most left up output. */
+	wl_list_for_each(output, &ec->output_list, link) {
+		if (output->x == 0 && output->y == 0) {
+			ec->primary = output;
+			break;
+		}
+	}
+
+	/* Add wrandr module */
+	if (enable_wrandr) {
+		if (!option_modules)
+			option_modules = strdup("wrandr.so");
+		else
+			option_modules = strcat(option_modules, ",wrandr.so");
+	}
+
 	setenv("WAYLAND_DISPLAY", socket_name, 1);
 
 	if (option_shell)
-- 
1.8.1.2