From c79a2be17d59530931e105b18edf7a8bab056862 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=B8rgen=20Lind?= <jorgen.lind@nokia.com>
Date: Tue, 24 Apr 2012 14:25:36 +0200
Subject: [PATCH] Make SurfaceBuffer::handle return something sensible
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take 2

Change-Id: I4acd03e8e1cb5d77c877ce49d5b9256c94aeb310
Reviewed-by: Andy Nichols <andy.nichols@nokia.com>
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>
---
 src/compositor/wayland_wrapper/wlsurfacebuffer.cpp | 37 +++++++++++++++++++---
 src/compositor/wayland_wrapper/wlsurfacebuffer.h   |  4 ++-
 2 files changed, 35 insertions(+), 6 deletions(-)

diff --git a/src/compositor/wayland_wrapper/wlsurfacebuffer.cpp b/src/compositor/wayland_wrapper/wlsurfacebuffer.cpp
index a729eb0..43b741f 100644
--- a/src/compositor/wayland_wrapper/wlsurfacebuffer.cpp
+++ b/src/compositor/wayland_wrapper/wlsurfacebuffer.cpp
@@ -62,6 +62,8 @@ SurfaceBuffer::SurfaceBuffer(Surface *surface)
     , m_page_flipper_has_buffer(false)
     , m_is_displayed(false)
     , m_texture(0)
+    , m_is_shm_resolved(false)
+    , m_is_shm(false)
 {
 }
 
@@ -80,6 +82,9 @@ void SurfaceBuffer::initialize(wl_buffer *buffer)
     m_page_flipper_has_buffer = false;
     m_is_displayed = false;
     m_destroyed = false;
+    m_handle = 0;
+    m_is_shm_resolved = false;
+    m_is_shm = false;
     m_destroy_listener.surfaceBuffer = this;
     m_destroy_listener.listener.notify = destroy_listener_callback;
     if (buffer)
@@ -90,20 +95,37 @@ void SurfaceBuffer::initialize(wl_buffer *buffer)
 void SurfaceBuffer::destructBufferState()
 {
     Q_ASSERT(!m_page_flipper_has_buffer);
-    if (m_handle) {
-        GraphicsHardwareIntegration *hwIntegration = m_compositor->graphicsHWIntegration();
-        hwIntegration->unlockNativeBuffer(m_handle, m_compositor->directRenderContext());
-    }
+
     destroyTexture();
+
     if (m_buffer) {
+        if (m_handle) {
+            if (m_is_shm) {
+                delete static_cast<QImage *>(m_handle);
+            } else {
+                GraphicsHardwareIntegration *hwIntegration = m_compositor->graphicsHWIntegration();
+                hwIntegration->unlockNativeBuffer(m_handle, m_compositor->directRenderContext());
+            }
+        }
         wl_list_remove(&m_destroy_listener.listener.link);
         sendRelease();
     }
     m_buffer = 0;
+    m_handle = 0;
     m_is_registered_for_buffer = false;
     m_is_displayed = false;
 }
 
+bool SurfaceBuffer::isShmBuffer() const
+{
+    if (!m_is_shm_resolved) {
+        SurfaceBuffer *that = const_cast<SurfaceBuffer *>(this);
+        that->m_is_shm = wl_buffer_is_shm(m_buffer);
+        that->m_is_shm_resolved = true;
+    }
+    return m_is_shm;
+}
+
 void SurfaceBuffer::sendRelease()
 {
     Q_ASSERT(m_buffer);
@@ -179,7 +201,12 @@ void *SurfaceBuffer::handle() const
         GraphicsHardwareIntegration *hwIntegration = m_compositor->graphicsHWIntegration();
         SurfaceBuffer *that = const_cast<SurfaceBuffer *>(this);
         if (isShmBuffer()) {
-            that->m_handle = wl_shm_buffer_get_data(m_buffer);
+            const uchar *data = static_cast<const uchar *>(wl_shm_buffer_get_data(m_buffer));
+            int stride = wl_shm_buffer_get_stride(m_buffer);
+            int width = m_buffer->width;
+            int height = m_buffer->height;
+            QImage *image = new QImage(data,width,height,stride, QImage::Format_ARGB32_Premultiplied);
+            that->m_handle = image;
         } else {
             that->m_handle = hwIntegration->lockNativeBuffer(m_buffer, m_compositor->directRenderContext());
         }
diff --git a/src/compositor/wayland_wrapper/wlsurfacebuffer.h b/src/compositor/wayland_wrapper/wlsurfacebuffer.h
index 44e32e6..fd01aff 100644
--- a/src/compositor/wayland_wrapper/wlsurfacebuffer.h
+++ b/src/compositor/wayland_wrapper/wlsurfacebuffer.h
@@ -74,7 +74,7 @@ public:
     inline int32_t width() const { return m_buffer->width; }
     inline int32_t height() const { return m_buffer->height; }
 
-    inline bool isShmBuffer() const { return wl_buffer_is_shm(m_buffer); }
+    bool isShmBuffer() const;
 
     inline bool isRegisteredWithBuffer() const { return m_is_registered_for_buffer; }
 
@@ -121,6 +121,8 @@ private:
     uint m_texture;
 #endif
     void *m_handle;
+    bool m_is_shm_resolved;
+    bool m_is_shm;
 
     static void destroy_listener_callback(wl_listener *listener, void *data);
 };
-- 
2.7.4