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author Aaron Giles <aaron@aarongiles.com>2010-01-18 09:34:43 +0000
committer Aaron Giles <aaron@aarongiles.com>2010-01-18 09:34:43 +0000
commite738b79785852050ce8b83e369a7fc4dd46a071b (patch)
tree1ac39e9f40790b375c57fea4e5d56ca8d132babc /src/emu/render.h
parent3f87f47a2ecdccb9d9627d0d52b76f262becb949 (diff)
Correct a long-standing design flaw: device configuration state
is now separate from runtime device state. I have larger plans for devices, so there is some temporary scaffolding to hold everything together, but this first step does separate things out. There is a new class 'running_device' which represents the state of a live device. A list of these running_devices sits in machine->devicelist and is created when a running_machine is instantiated. To access the configuration state, use device->baseconfig() which returns a reference to the configuration. The list of running_devices in machine->devicelist has a 1:1 correspondance with the list of device configurations in machine->config->devicelist, and most navigation options work equally on either (scanning by class, type, etc.) For the most part, drivers will now deal with running_device objects instead of const device_config objects. In fact, in order to do this patch, I did the following global search & replace: const device_config -> running_device device->static_config -> device->baseconfig().static_config device->inline_config -> device->baseconfig().inline_config and then fixed up the compiler errors that fell out. Some specifics: Removed device_get_info_* functions and replaced them with methods called get_config_*. Added methods for get_runtime_* to access runtime state from the running_device. DEVICE_GET_INFO callbacks are only passed a device_config *. This means they have no access to the token or runtime state at all. For most cases this is fine. Added new DEVICE_GET_RUNTIME_INFO callback that is passed the running_device for accessing data that is live at runtime. In the future this will go away to make room for a cleaner mechanism. Cleaned up the handoff of memory regions from the memory subsystem to the devices.
Diffstat (limited to 'src/emu/render.h')
-rw-r--r--src/emu/render.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/emu/render.h b/src/emu/render.h
index a690cc45842..f1ec29dfae4 100644
--- a/src/emu/render.h
+++ b/src/emu/render.h
@@ -164,6 +164,11 @@ enum
TYPE DEFINITIONS
***************************************************************************/
+// forward definitions
+class running_device;
+class device_config;
+
+
/*-------------------------------------------------
callbacks
-------------------------------------------------*/
@@ -325,7 +330,7 @@ struct _render_container_user_settings
void render_init(running_machine *machine);
/* return a boolean indicating if the screen is live */
-int render_is_live_screen(const device_config *screen);
+int render_is_live_screen(running_device *screen);
/* return the smallest maximum update rate across all targets */
float render_get_max_update_rate(void);
@@ -447,6 +452,7 @@ render_container *render_container_get_ui(void);
/* return a pointer to the container for the given screen */
render_container *render_container_get_screen(const device_config *screen);
+render_container *render_container_get_screen(running_device *screen);
/* add a line item to the specified container */
void render_container_add_line(render_container *container, float x0, float y0, float x1, float y1, float width, rgb_t argb, UINT32 flags);