Turn image and palette cache into c style dynamic interface

Instead of passing a bunch of function pointer and an opaque
pointer we make a real type and add a vtable pointer to it.
This means we can simplify all the canvas constructors, etc.

8 files changed, 71 insertions, 116 deletions

diff --git a/common/cairo_canvas.c b/common/cairo_canvas.c
index c40693b..4b8c305 100644
--- a/common/cairo_canvas.c
+++ b/common/cairo_canvas.c
@@ -438,7 +438,7 @@ static cairo_surface_t *canvas_get_invers_image(CairoCanvas *canvas, SPICE_ADDRE
     }
 #endif
     case SPICE_IMAGE_TYPE_FROM_CACHE:
-        surface = canvas->base.bits_cache_get(canvas->base.bits_cache_opaque, descriptor->id);
+        surface = canvas->base.bits_cache->ops->get(canvas->base.bits_cache, descriptor->id);
         break;
     case SPICE_IMAGE_TYPE_BITMAP: {
         SpiceBitmapImage *bitmap = (SpiceBitmapImage *)descriptor;
@@ -465,7 +465,7 @@ static cairo_surface_t *canvas_get_invers_image(CairoCanvas *canvas, SPICE_ADDRE
     }
 
     if (cache_me) {
-        canvas->base.bits_cache_put(canvas->base.bits_cache_opaque, descriptor->id, surface);
+        canvas->base.bits_cache->ops->put(canvas->base.bits_cache, descriptor->id, surface);
     }
 
     invers = canvas_handle_inverse_user_data(surface);
@@ -1596,15 +1596,11 @@ static int need_init = 1;
 
 #ifdef CAIRO_CANVAS_CACHE
 CairoCanvas *canvas_create(cairo_t *cairo, int bits,
-                           void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put, bits_cache_get_fn_t bits_cache_get,
-                           void *palette_cache_opaque, palette_cache_put_fn_t palette_cache_put,
-                           palette_cache_get_fn_t palette_cache_get,
-                           palette_cache_release_fn_t palette_cache_release
+                           SpiceImageCache *bits_cache,
+                           SpicePaletteCache *palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
 CairoCanvas *canvas_create(cairo_t *cairo, int bits,
-                           void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put, bits_cache_get_fn_t bits_cache_get
+                           SpiceImageCache *bits_cache
 #else
 CairoCanvas *canvas_create(cairo_t *cairo, int bits
 #endif
@@ -1626,18 +1622,11 @@ CairoCanvas *canvas_create(cairo_t *cairo, int bits
     memset(canvas, 0, sizeof(CairoCanvas));
 #ifdef CAIRO_CANVAS_CACHE
     init_ok = canvas_base_init(&canvas->base, bits,
-                               bits_cache_opaque,
-                               bits_cache_put,
-                               bits_cache_get,
-                               palette_cache_opaque,
-                               palette_cache_put,
-                               palette_cache_get,
-                               palette_cache_release
+                               bits_cache,
+                               palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
     init_ok = canvas_base_init(&canvas->base, bits,
-                               bits_cache_opaque,
-                               bits_cache_put,
-                               bits_cache_get
+                               bits_cache
 #else
     init_ok = canvas_base_init(&canvas->base, bits
 #endif
diff --git a/common/cairo_canvas.h b/common/cairo_canvas.h
index bf6ff90..b0c0820 100644
--- a/common/cairo_canvas.h
+++ b/common/cairo_canvas.h
@@ -62,14 +62,12 @@ void canvas_set_access_params(CairoCanvas *canvas, unsigned long base, unsigned
 cairo_t *canvas_get_cairo(CairoCanvas *canvas);
 
 #ifdef CAIRO_CANVAS_CACHE
-CairoCanvas *canvas_create(cairo_t *cairo, int bits, void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put, bits_cache_get_fn_t bits_cache_get,
-                           void *palette_cache_opaque, palette_cache_put_fn_t palette_cache_put,
-                           palette_cache_get_fn_t palette_cache_get,
-                           palette_cache_release_fn_t palette_cache_release
+CairoCanvas *canvas_create(cairo_t *cairo, int bits,
+                           SpiceImageCache *bits_cache,
+                           SpicePaletteCache *palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
-CairoCanvas *canvas_create(cairo_t *cairo, int bits, void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put, bits_cache_get_fn_t bits_cache_get
+CairoCanvas *canvas_create(cairo_t *cairo, int bits,
+                           SpiceImageCache *bits_cache
 #else
 CairoCanvas *canvas_create(cairo_t *cairo, int bits
 #endif
diff --git a/common/canvas_base.c b/common/canvas_base.c
index ebb9846..0ddbaf4 100644
--- a/common/canvas_base.c
+++ b/common/canvas_base.c
@@ -171,15 +171,10 @@ typedef struct CanvasBase {
 #endif
 
 #if defined(CAIRO_CANVAS_CACHE) || defined(CAIRO_CANVAS_IMAGE_CACHE)
-    void *bits_cache_opaque;
-    bits_cache_put_fn_t bits_cache_put;
-    bits_cache_get_fn_t bits_cache_get;
+    SpiceImageCache *bits_cache;
 #endif
 #ifdef CAIRO_CANVAS_CACHE
-    void *palette_cache_opaque;
-    palette_cache_put_fn_t palette_cache_put;
-    palette_cache_get_fn_t palette_cache_get;
-    palette_cache_release_fn_t palette_cache_release;
+    SpicePaletteCache *palette_cache;
 #endif
 #ifdef WIN32
     HDC dc;
@@ -535,13 +530,13 @@ static inline SpicePalette *canvas_get_palett(CanvasBase *canvas, SPICE_ADDRESS
     }
 
     if (flags & SPICE_BITMAP_FLAGS_PAL_FROM_CACHE) {
-        palette = canvas->palette_cache_get(canvas->palette_cache_opaque, base_palette);
+        palette = canvas->palette_cache->ops->get(canvas->palette_cache, base_palette);
     } else if (flags & SPICE_BITMAP_FLAGS_PAL_CACHE_ME) {
         palette = (SpicePalette *)SPICE_GET_ADDRESS(base_palette);
         access_test(canvas, palette, sizeof(SpicePalette));
         access_test(canvas, palette, sizeof(SpicePalette) + palette->num_ents * sizeof(uint32_t));
         canvas_localize_palette(canvas, palette);
-        canvas->palette_cache_put(canvas->palette_cache_opaque, palette);
+        canvas->palette_cache->ops->put(canvas->palette_cache, palette);
     } else {
         palette = (SpicePalette *)SPICE_GET_ADDRESS(base_palette);
         canvas_localize_palette(canvas, palette);
@@ -716,7 +711,7 @@ static cairo_surface_t *canvas_get_bits(CanvasBase *canvas, SpiceBitmap *bitmap)
     surface = canvas_bitmap_to_surface(canvas, bitmap, palette);
 
     if (palette && (bitmap->flags & SPICE_BITMAP_FLAGS_PAL_FROM_CACHE)) {
-        canvas->palette_cache_release(palette);
+        canvas->palette_cache->ops->release(canvas->palette_cache, palette);
     }
 
     return surface;
@@ -851,7 +846,7 @@ static cairo_surface_t *canvas_get_image(CanvasBase *canvas, SPICE_ADDRESS addr)
     }
 #endif
     case SPICE_IMAGE_TYPE_FROM_CACHE:
-        return canvas->bits_cache_get(canvas->bits_cache_opaque, descriptor->id);
+        return canvas->bits_cache->ops->get(canvas->bits_cache, descriptor->id);
     case SPICE_IMAGE_TYPE_BITMAP: {
         SpiceBitmapImage *bitmap = (SpiceBitmapImage *)descriptor;
         access_test(canvas, descriptor, sizeof(SpiceBitmapImage));
@@ -863,7 +858,7 @@ static cairo_surface_t *canvas_get_image(CanvasBase *canvas, SPICE_ADDRESS addr)
     }
 
     if (descriptor->flags & SPICE_IMAGE_FLAGS_CACHE_ME) {
-        canvas->bits_cache_put(canvas->bits_cache_opaque, descriptor->id, surface);
+        canvas->bits_cache->ops->put(canvas->bits_cache, descriptor->id, surface);
 #ifdef DEBUG_DUMP_SURFACE
         dump_surface(surface, 1);
 #endif
@@ -1163,7 +1158,7 @@ static cairo_surface_t *canvas_get_mask(CanvasBase *canvas, SpiceQMask *mask)
     }
 #if defined(CAIRO_CANVAS_CACHE) || defined(CAIRO_CANVAS_IMAGE_CACHE)
     case SPICE_IMAGE_TYPE_FROM_CACHE:
-        surface = canvas->bits_cache_get(canvas->bits_cache_opaque, descriptor->id);
+        surface = canvas->bits_cache->ops->get(canvas->bits_cache, descriptor->id);
         is_invers = 0;
         break;
 #endif
@@ -1173,7 +1168,7 @@ static cairo_surface_t *canvas_get_mask(CanvasBase *canvas, SpiceQMask *mask)
 
 #if defined(CAIRO_CANVAS_CACHE) || defined(CAIRO_CANVAS_IMAGE_CACHE)
     if (cache_me) {
-        canvas->bits_cache_put(canvas->bits_cache_opaque, descriptor->id, surface);
+        canvas->bits_cache->ops->put(canvas->bits_cache, descriptor->id, surface);
     }
 
     if (need_invers && !is_invers) { // surface is in cache
@@ -1570,18 +1565,11 @@ static void canvas_base_destroy(CanvasBase *canvas)
 
 #ifdef CAIRO_CANVAS_CACHE
 static int canvas_base_init(CanvasBase *canvas, int depth,
-                            void *bits_cache_opaque,
-                            bits_cache_put_fn_t bits_cache_put,
-                            bits_cache_get_fn_t bits_cache_get,
-                            void *palette_cache_opaque,
-                            palette_cache_put_fn_t palette_cache_put,
-                            palette_cache_get_fn_t palette_cache_get,
-                            palette_cache_release_fn_t palette_cache_release
+                            SpiceImageCache *bits_cache,
+                            SpicePaletteCache *palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
 static int canvas_base_init(CanvasBase *canvas, int depth,
-                            void *bits_cache_opaque,
-                            bits_cache_put_fn_t bits_cache_put,
-                            bits_cache_get_fn_t bits_cache_get
+                            SpiceImageCache *bits_cache
 #else
 static int canvas_base_init(CanvasBase *canvas, int depth
 #endif
@@ -1637,15 +1625,10 @@ static int canvas_base_init(CanvasBase *canvas, int depth
 
 
 #if defined(CAIRO_CANVAS_CACHE) || defined(CAIRO_CANVAS_IMAGE_CACHE)
-    canvas->bits_cache_opaque = bits_cache_opaque;
-    canvas->bits_cache_put = bits_cache_put;
-    canvas->bits_cache_get = bits_cache_get;
+    canvas->bits_cache = bits_cache;
 #endif
 #ifdef CAIRO_CANVAS_CACHE
-    canvas->palette_cache_opaque = palette_cache_opaque;
-    canvas->palette_cache_put = palette_cache_put;
-    canvas->palette_cache_get = palette_cache_get;
-    canvas->palette_cache_release = palette_cache_release;
+    canvas->palette_cache = palette_cache;
 #endif
 
 #ifdef WIN32
diff --git a/common/canvas_base.h b/common/canvas_base.h
index 15cf869..cc75087 100644
--- a/common/canvas_base.h
+++ b/common/canvas_base.h
@@ -24,15 +24,33 @@
 #include "lz.h"
 #include <spice/draw.h>
 
-#if defined(CAIRO_CANVAS_CACHE) || defined(CAIRO_CANVAS_IMAGE_CACHE)
-typedef void (*bits_cache_put_fn_t)(void *bits_cache_opaque, uint64_t id, cairo_surface_t *surface);
-typedef cairo_surface_t *(*bits_cache_get_fn_t)(void *bits_cache_opaque, uint64_t id);
-#endif
-#ifdef CAIRO_CANVAS_CACHE
-typedef void (*palette_cache_put_fn_t)(void *palette_cache_opaque, SpicePalette *palette);
-typedef SpicePalette *(*palette_cache_get_fn_t)(void *palette_cache_opaque, uint64_t id);
-typedef void (*palette_cache_release_fn_t)(SpicePalette *palette);
-#endif
+typedef struct _SpiceImageCache SpiceImageCache;
+typedef struct _SpicePaletteCache SpicePaletteCache;
+
+typedef struct {
+    void (*put)(SpiceImageCache *cache,
+                uint64_t id,
+                cairo_surface_t *surface);
+    cairo_surface_t *(*get)(SpiceImageCache *cache,
+                            uint64_t id);
+} SpiceImageCacheOps;
+
+struct _SpiceImageCache {
+  SpiceImageCacheOps *ops;
+};
+
+typedef struct {
+    void (*put)(SpicePaletteCache *cache,
+                SpicePalette *palette);
+    SpicePalette *(*get)(SpicePaletteCache *cache,
+                         uint64_t id);
+    void (*release)(SpicePaletteCache *cache,
+                    SpicePalette *palette);
+} SpicePaletteCacheOps;
+
+struct _SpicePaletteCache {
+  SpicePaletteCacheOps *ops;
+};
 
 typedef void (*glz_decode_fn_t)(void *glz_decoder_opaque, uint8_t *data,
                                 SpicePalette *plt, void *usr_data);
diff --git a/common/gdi_canvas.c b/common/gdi_canvas.c
index 9e29cb8..bc9f8b2 100644
--- a/common/gdi_canvas.c
+++ b/common/gdi_canvas.c
@@ -1696,14 +1696,11 @@ static int need_init = 1;
 
 #ifdef CAIRO_CANVAS_CACHE
 GdiCanvas *gdi_canvas_create(HDC dc, Mutex* lock, int bits, void *bits_cache_opaque,
-                             bits_cache_put_fn_t bits_cache_put, bits_cache_get_fn_t bits_cache_get,
-                             void *palette_cache_opaque, palette_cache_put_fn_t palette_cache_put,
-                             palette_cache_get_fn_t palette_cache_get,
-                             palette_cache_release_fn_t palette_cache_release
+                             SpiceImageCache *bits_cache,
+                             SpicePaletteCache *palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
 GdiCanvas *gdi_canvas_create(HDC dc, int bits,
-                             void *bits_cache_opaque,
-                             bits_cache_put_fn_t bits_cache_put, bits_cache_get_fn_t bits_cache_get
+                             SpiceImageCache *bits_cache
 #else
 GdiCanvas *gdi_canvas_create(HDC dc, int bits
 #endif
@@ -1721,18 +1718,11 @@ GdiCanvas *gdi_canvas_create(HDC dc, int bits
     memset(canvas, 0, sizeof(GdiCanvas));
 #ifdef CAIRO_CANVAS_CACHE
     init_ok = canvas_base_init(&canvas->base, bits,
-                               bits_cache_opaque,
-                               bits_cache_put,
-                               bits_cache_get,
-                               palette_cache_opaque,
-                               palette_cache_put,
-                               palette_cache_get,
-                               palette_cache_release
+                               bits_cache,
+                               palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
     init_ok = gdi_canvas_base_init(&canvas->base, bits,
-                                   bits_cache_opaque,
-                                   bits_cache_put,
-                                   bits_cache_get
+                                   bits_cache
 #else
     init_ok = gdi_canvas_base_init(&canvas->base, bits
 #endif
diff --git a/common/gdi_canvas.h b/common/gdi_canvas.h
index 606e71e..18a4843 100644
--- a/common/gdi_canvas.h
+++ b/common/gdi_canvas.h
@@ -60,10 +60,8 @@ void gdi_canvas_set_access_params(GdiCanvas *canvas, unsigned long base, unsigne
 
 
 GdiCanvas *gdi_canvas_create(HDC dc, class Mutex *lock, int bits, void *bits_cache_opaque,
-                             bits_cache_put_fn_t bits_cache_put, bits_cache_get_fn_t bits_cache_get,
-                             void *palette_cache_opaque, palette_cache_put_fn_t palette_cache_put,
-                             palette_cache_get_fn_t palette_cache_get,
-                             palette_cache_release_fn_t palette_cache_release,
+                             SpiceImageCache *bits_cache,
+                             SpicePaletteCache *palette_cache
                              void *glz_decoder_opaque,
                              glz_decode_fn_t glz_decode);
 
diff --git a/common/gl_canvas.c b/common/gl_canvas.c
index 124bcfe..329d97b 100644
--- a/common/gl_canvas.c
+++ b/common/gl_canvas.c
@@ -787,18 +787,11 @@ static int need_init = 1;
 
 #ifdef CAIRO_CANVAS_CACHE
 GLCanvas *gl_canvas_create(void *usr_data, int width, int height, int depth,
-                           void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put,
-                           bits_cache_get_fn_t bits_cache_get,
-                           void *palette_cache_opaque,
-                           palette_cache_put_fn_t palette_cache_put,
-                           palette_cache_get_fn_t palette_cache_get,
-                           palette_cache_release_fn_t palette_cache_release
+                           SpiceImageCache *bits_cache,
+                           SpicePaletteCache *palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
 GLCanvas *gl_canvas_create(void *usr_data, int width, int height, int depth,
-                           void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put,
-                           bits_cache_get_fn_t bits_cache_get
+                           SpiceImageCache *bits_cache
 #else
 GLCanvas *gl_canvas_create(void *usr_data, int width, int height, int depth
 #endif
@@ -826,18 +819,11 @@ GLCanvas *gl_canvas_create(void *usr_data, int width, int height, int depth
     canvas->private_data = NULL;
 #ifdef CAIRO_CANVAS_CACHE
     init_ok = canvas_base_init(&canvas->base, depth,
-                               bits_cache_opaque,
-                               bits_cache_put,
-                               bits_cache_get,
-                               palette_cache_opaque,
-                               palette_cache_put,
-                               palette_cache_get,
-                               palette_cache_release
+                               bits_cache,
+                               palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
     init_ok = canvas_base_init(&canvas->base, depth,
-                               bits_cache_opaque,
-                               bits_cache_put,
-                               bits_cache_get
+                               bits_cache
 #else
     init_ok = canvas_base_init(&canvas->base, depth
 #endif
diff --git a/common/gl_canvas.h b/common/gl_canvas.h
index 74c8913..794b1ea 100644
--- a/common/gl_canvas.h
+++ b/common/gl_canvas.h
@@ -56,18 +56,11 @@ void *gl_canvas_get_usr_data(GLCanvas *canvas);
 
 #ifdef CAIRO_CANVAS_CACHE
 GLCanvas *gl_canvas_create(void *usr_data, int width, int height, int depth,
-                           void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put,
-                           bits_cache_get_fn_t bits_cache_get,
-                           void *palette_cache_opaque,
-                           palette_cache_put_fn_t palette_cache_put,
-                           palette_cache_get_fn_t palette_cache_get,
-                           palette_cache_release_fn_t palette_cache_release
+                           SpiceImageCache *bits_cache,
+                           SpicePaletteCache *palette_cache
 #elif defined(CAIRO_CANVAS_IMAGE_CACHE)
 GLCanvas *gl_canvas_create(void *usr_data, int width, int height, int depth,
-                           void *bits_cache_opaque,
-                           bits_cache_put_fn_t bits_cache_put,
-                           bits_cache_get_fn_t bits_cache_get
+                           SpiceImageCache *bits_cache
 #else
 GLCanvas *gl_canvas_create(void *usr_data, int width, int height, int depth
 #endif