diff options
author | 2010-01-18 09:34:43 +0000 | |
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committer | 2010-01-18 09:34:43 +0000 | |
commit | e738b79785852050ce8b83e369a7fc4dd46a071b (patch) | |
tree | 1ac39e9f40790b375c57fea4e5d56ca8d132babc /src/emu/render.h | |
parent | 3f87f47a2ecdccb9d9627d0d52b76f262becb949 (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.h | 8 |
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); |