[PATCH v6 5/7] Use new GlzImageRetention instead of accessing Drawable internals

[Frediano Ziglio <fziglio@xxxxxxxxxx>]

Remove some coupling, we mainly need to store a list of RedGlzDrawables.

Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
---
 server/dcc-encoders.c    | 12 ++++++------
 server/dcc-encoders.h    | 14 ++++++++++++--
 server/display-channel.c |  6 +++---
 server/display-channel.h |  2 +-
 4 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/server/dcc-encoders.c b/server/dcc-encoders.c
index ea68ac1..42affd5 100644
--- a/server/dcc-encoders.c
+++ b/server/dcc-encoders.c
@@ -70,7 +70,7 @@ struct RedGlzDrawable {
 #define LINK_TO_GLZ(ptr) SPICE_CONTAINEROF((ptr), RedGlzDrawable, \
                                            drawable_link)
 #define DRAWABLE_FOREACH_GLZ_SAFE(drawable, link, next, glz) \
-    SAFE_FOREACH(link, next, drawable, &(drawable)->glz_ring, glz, LINK_TO_GLZ(link))
+    SAFE_FOREACH(link, next, drawable, &(drawable)->glz_retention.ring, glz, LINK_TO_GLZ(link))
 
 static void glz_drawable_instance_item_free(GlzDrawableInstanceItem *instance);
 static void encoder_data_init(EncoderData *data);
@@ -642,20 +642,20 @@ void image_encoders_free_glz_drawables(ImageEncoders *enc)
     pthread_rwlock_unlock(&glz_dict->encode_lock);
 }
 
-void drawable_free_glz_drawables(struct Drawable *drawable)
+void glz_retention_free_drawables(GlzImageRetention *ret)
 {
     RingItem *glz_item, *next_item;
     RedGlzDrawable *glz;
-    DRAWABLE_FOREACH_GLZ_SAFE(drawable, glz_item, next_item, glz) {
+    SAFE_FOREACH(glz_item, next_item, TRUE, &ret->ring, glz, LINK_TO_GLZ(glz_item)) {
         red_glz_drawable_free(glz);
     }
 }
 
-void drawable_detach_glz_drawables(struct Drawable *drawable)
+void glz_retention_detach_drawables(GlzImageRetention *ret)
 {
     RingItem *item, *next;
 
-    RING_FOREACH_SAFE(item, next, &drawable->glz_ring) {
+    RING_FOREACH_SAFE(item, next, &ret->ring) {
         SPICE_CONTAINEROF(item, RedGlzDrawable, drawable_link)->has_drawable = FALSE;
         ring_remove(item);
     }
@@ -1176,7 +1176,7 @@ static RedGlzDrawable *get_glz_drawable(ImageEncoders *enc, Drawable *drawable)
     ring_item_init(&ret->link);
     ring_item_init(&ret->drawable_link);
     ring_add_before(&ret->link, &enc->glz_drawables);
-    ring_add(&drawable->glz_ring, &ret->drawable_link);
+    ring_add(&drawable->glz_retention.ring, &ret->drawable_link);
     enc->shared_data->glz_drawable_count++;
     return ret;
 }
diff --git a/server/dcc-encoders.h b/server/dcc-encoders.h
index 114dacd..38e6c5a 100644
--- a/server/dcc-encoders.h
+++ b/server/dcc-encoders.h
@@ -36,6 +36,7 @@ typedef struct RedGlzDrawable RedGlzDrawable;
 typedef struct ImageEncoders ImageEncoders;
 typedef struct ImageEncoderSharedData ImageEncoderSharedData;
 typedef struct GlzSharedDictionary GlzSharedDictionary;
+typedef struct GlzImageRetention GlzImageRetention;
 
 void image_encoder_shared_init(ImageEncoderSharedData *shared_data);
 void image_encoder_shared_stat_reset(ImageEncoderSharedData *shared_data);
@@ -51,8 +52,8 @@ void image_encoders_glz_get_restore_data(ImageEncoders *enc,
                                          uint8_t *out_id, GlzEncDictRestoreData *out_data);
 gboolean image_encoders_glz_encode_lock(ImageEncoders *enc);
 void image_encoders_glz_encode_unlock(ImageEncoders *enc);
-void drawable_free_glz_drawables(struct Drawable *drawable);
-void drawable_detach_glz_drawables(struct Drawable *drawable);
+void glz_retention_free_drawables(GlzImageRetention *ret);
+void glz_retention_detach_drawables(GlzImageRetention *ret);
 
 #define RED_COMPRESS_BUF_SIZE (1024 * 64)
 struct RedCompressBuf {
@@ -130,6 +131,15 @@ typedef struct {
     EncoderData data;
 } GlzData;
 
+struct GlzImageRetention {
+    Ring ring;
+};
+
+static inline void glz_retention_init(GlzImageRetention *ret)
+{
+    ring_init(&ret->ring);
+}
+
 struct ImageEncoderSharedData {
     uint32_t glz_drawable_count;
 
diff --git a/server/display-channel.c b/server/display-channel.c
index 2366a98..073d45e 100644
--- a/server/display-channel.c
+++ b/server/display-channel.c
@@ -1179,7 +1179,7 @@ static bool free_one_drawable(DisplayChannel *display, int force_glz_free)
 
     drawable = SPICE_CONTAINEROF(ring_item, Drawable, list_link);
     if (force_glz_free) {
-        drawable_free_glz_drawables(drawable);
+        glz_retention_free_drawables(&drawable->glz_retention);
     }
     drawable_draw(display, drawable);
     container = drawable->tree_item.base.container;
@@ -1280,7 +1280,7 @@ static Drawable *display_channel_drawable_try_new(DisplayChannel *display,
     drawable->tree_item.base.type = TREE_ITEM_TYPE_DRAWABLE;
     region_init(&drawable->tree_item.base.rgn);
     ring_init(&drawable->pipes);
-    ring_init(&drawable->glz_ring);
+    glz_retention_init(&drawable->glz_retention);
     drawable->process_commands_generation = process_commands_generation;
 
     return drawable;
@@ -1341,7 +1341,7 @@ void drawable_unref(Drawable *drawable)
     drawable_unref_surface_deps(display, drawable);
     display_channel_surface_unref(display, drawable->surface_id);
 
-    drawable_detach_glz_drawables(drawable);
+    glz_retention_detach_drawables(&drawable->glz_retention);
 
     if (drawable->red_drawable) {
         red_drawable_unref(drawable->red_drawable);
diff --git a/server/display-channel.h b/server/display-channel.h
index 14c0b90..5ccc8cb 100644
--- a/server/display-channel.h
+++ b/server/display-channel.h
@@ -62,7 +62,7 @@ struct Drawable {
     uint32_t size_pipe_item_rest;
     RedDrawable *red_drawable;
 
-    Ring glz_ring;
+    GlzImageRetention glz_retention;
 
     red_time_t creation_time;
     red_time_t first_frame_time;
-- 
2.7.4

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