From 691e835d1b5f963230d36de8c3b2670cffb5cc9a Mon Sep 17 00:00:00 2001
From: Andri Yngvason <andri@yngvason.is>
Date: Sun, 19 Sep 2021 19:56:56 +0000
Subject: [PATCH] fb: Add transform attribute

---
 include/fb.h      |  1 +
 include/neatvnc.h | 14 ++++++++++++++
 src/fb.c          | 12 ++++++++++++
 3 files changed, 27 insertions(+)

diff --git a/include/fb.h b/include/fb.h
index bba8fef..1d19081 100644
--- a/include/fb.h
+++ b/include/fb.h
@@ -37,6 +37,7 @@ struct nvnc_fb {
 	uint16_t width;
 	uint16_t height;
 	uint32_t fourcc_format;
+	enum nvnc_transform transform;
 
 	/* main memory buffer attributes */
 	void* addr;
diff --git a/include/neatvnc.h b/include/neatvnc.h
index 2d9b7c5..89d9d05 100644
--- a/include/neatvnc.h
+++ b/include/neatvnc.h
@@ -41,6 +41,18 @@ enum nvnc_fb_type {
 	NVNC_FB_GBM_BO,
 };
 
+/* This is the same as wl_output_transform */
+enum nvnc_transform {
+	NVNC_TRANSFORM_NORMAL = 0,
+	NVNC_TRANSFORM_90 = 1,
+	NVNC_TRANSFORM_180 = 2,
+	NVNC_TRANSFORM_270 = 3,
+	NVNC_TRANSFORM_FLIPPED = 4,
+	NVNC_TRANSFORM_FLIPPED_90 = 5,
+	NVNC_TRANSFORM_FLIPPED_180 = 6,
+	NVNC_TRANSFORM_FLIPPED_270 = 7,
+};
+
 typedef void (*nvnc_key_fn)(struct nvnc_client*, uint32_t key,
                             bool is_pressed);
 typedef void (*nvnc_pointer_fn)(struct nvnc_client*, uint16_t x, uint16_t y,
@@ -96,6 +108,7 @@ void nvnc_fb_unref(struct nvnc_fb* fb);
 
 void nvnc_fb_set_release_fn(struct nvnc_fb* fb, nvnc_fb_release_fn fn,
 			    void* context);
+void nvnc_fb_set_transform(struct nvnc_fb* fb, enum nvnc_transform);
 
 void* nvnc_fb_get_addr(const struct nvnc_fb* fb);
 uint16_t nvnc_fb_get_width(const struct nvnc_fb* fb);
@@ -104,6 +117,7 @@ uint32_t nvnc_fb_get_fourcc_format(const struct nvnc_fb* fb);
 int32_t nvnc_fb_get_stride(const struct nvnc_fb* fb);
 int nvnc_fb_get_pixel_size(const struct nvnc_fb* fb);
 struct gbm_bo* nvnc_fb_get_gbm_bo(const struct nvnc_fb* fb);
+enum nvnc_transform nvnc_fb_get_transform(const struct nvnc_fb* fb);
 
 struct nvnc_fb_pool* nvnc_fb_pool_new(uint16_t width, uint16_t height,
 				      uint32_t fourcc_format, uint16_t stride);
diff --git a/src/fb.c b/src/fb.c
index df1a3cc..695a28e 100644
--- a/src/fb.c
+++ b/src/fb.c
@@ -147,6 +147,12 @@ struct gbm_bo* nvnc_fb_get_gbm_bo(const struct nvnc_fb* fb)
 	return fb->bo;
 }
 
+EXPORT
+enum nvnc_transform nvnc_fb_get_transform(const struct nvnc_fb* fb)
+{
+	return fb->transform;
+}
+
 static void nvnc__fb_free(struct nvnc_fb* fb)
 {
 	nvnc_cleanup_fn cleanup = fb->common.cleanup_fn;
@@ -190,6 +196,12 @@ void nvnc_fb_set_release_fn(struct nvnc_fb* fb, nvnc_fb_release_fn fn, void* con
 	fb->release_context = context;
 }
 
+EXPORT
+void nvnc_fb_set_transform(struct nvnc_fb* fb, enum nvnc_transform transform)
+{
+	fb->transform = transform;
+}
+
 void nvnc_fb_hold(struct nvnc_fb* fb)
 {
 	fb->hold_count++;