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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/sound/2203intf.c
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/sound/2203intf.c')
-rw-r--r--src/emu/sound/2203intf.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/emu/sound/2203intf.c b/src/emu/sound/2203intf.c
index 398cfe723a7..c831095a7d2 100644
--- a/src/emu/sound/2203intf.c
+++ b/src/emu/sound/2203intf.c
@@ -12,11 +12,11 @@ struct _ym2203_state
void * chip;
void * psg;
const ym2203_interface *intf;
- const device_config *device;
+ running_device *device;
};
-INLINE ym2203_state *get_safe_token(const device_config *device)
+INLINE ym2203_state *get_safe_token(running_device *device)
{
assert(device != NULL);
assert(device->token != NULL);
@@ -127,7 +127,7 @@ static DEVICE_START( ym2203 )
},
NULL
};
- const ym2203_interface *intf = device->static_config ? (const ym2203_interface *)device->static_config : &generic_2203;
+ const ym2203_interface *intf = device->baseconfig().static_config ? (const ym2203_interface *)device->baseconfig().static_config : &generic_2203;
ym2203_state *info = get_safe_token(device);
int rate = device->clock/72; /* ??? */