From 1578d492620801adc40404340d546adcb9c76645 Mon Sep 17 00:00:00 2001
From: Boram Park <boram1288.park@samsung.com>
Date: Sun, 11 Jun 2017 08:24:07 +0900
Subject: [PATCH] helper: add tdm_helper_get_buffer_full_size() to get the real
 buffer size

Change-Id: Ie27d3b52ab57171b25628e8a85fc509d1e643e21
---
 include/tdm_helper.h | 11 +++++++++++
 src/tdm_helper.c     | 22 ++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/include/tdm_helper.h b/include/tdm_helper.h
index c80057d..ef0a657 100644
--- a/include/tdm_helper.h
+++ b/include/tdm_helper.h
@@ -110,6 +110,17 @@ void
 tdm_helper_clear_buffer(tbm_surface_h buffer);
 
 /**
+ * @brief Get the buffer full size.
+ * @details
+ * In some hardware, the buffer width or height is aligned with the fixed size.
+ * eg. 8, 16, etc. In this case, the real size of buffer could be bigger than
+ * the buffer size of tbm_surface_info_s.
+ * @param[in] buffer A TDM buffer
+ */
+void
+tdm_helper_get_buffer_full_size(tbm_surface_h buffer, int *buffer_w, int *buffer_h);
+
+/**
  * @brief convert the source buffer to the destination buffer with given rectangles
  * trannsform
  * @details
diff --git a/src/tdm_helper.c b/src/tdm_helper.c
index 4adbcb8..21758f6 100644
--- a/src/tdm_helper.c
+++ b/src/tdm_helper.c
@@ -390,6 +390,28 @@ tdm_helper_clear_buffer(tbm_surface_h buffer)
 	tdm_helper_clear_buffer_pos(buffer, NULL);
 }
 
+EXTERN void
+tdm_helper_get_buffer_full_size(tbm_surface_h buffer, int *buffer_w, int *buffer_h)
+{
+	tbm_surface_info_s info;
+	int ret;
+
+	TDM_RETURN_IF_FAIL(buffer != NULL);
+
+	ret = tbm_surface_get_info(buffer, &info);
+	TDM_RETURN_IF_FAIL(ret == TBM_SURFACE_ERROR_NONE);
+
+	if (buffer_w) {
+		if (IS_RGB(info.format))
+			*buffer_w = info.planes[0].stride >> 2;
+		else
+			*buffer_w = info.planes[0].stride;
+	}
+
+	if (buffer_h)
+		*buffer_h = info.planes[0].size / info.planes[0].stride;
+}
+
 static pixman_format_code_t
 _tdm_helper_pixman_format_get(tbm_format format)
 {
-- 
2.7.4