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emu/validity.cpp, ui/info.cpp: Base "no sound" check on speaker devices.

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Currently the speaker device is the only way sound can get to the OSD
layer, so its presence or absence determines whether the emulated system
is capabale of producing sound.  A few systems use chips with sound
capability for other purposes (typically I/O or video) while leaving the
sound outputs disconnected.  These systems should display the notice
about the absence of sound output.
This commit is contained in:
Vas Crabb 2022-08-20 20:56:56 +10:00
parent 2ed9b028b2
commit 761788fbd9
2 changed files with 6 additions and 3 deletions
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6
src/emu/validity.cpp
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@ -11,10 +11,12 @@
#include "emu.h"
#include "validity.h"
#include "corestr.h"
#include "emuopts.h"
#include "romload.h"
#include "speaker.h"
#include "video/rgbutil.h"
#include "corestr.h"
#include "unicode.h"
#include <cctype>
@ -2044,7 +2046,7 @@ void validity_checker::validate_driver(device_t &root)
device_t::feature_type const imperfect(m_current_driver->type.imperfect_features());
if (!(m_current_driver->flags & (machine_flags::IS_BIOS_ROOT | machine_flags::NO_SOUND_HW)) && !(unemulated & device_t::feature::SOUND))
{
sound_interface_enumerator iter(root);
speaker_device_enumerator iter(root);
if (!iter.first())
osd_printf_error("Driver is missing MACHINE_NO_SOUND or MACHINE_NO_SOUND_HW flag\n");
}

3
src/frontend/mame/ui/info.cpp
View File

@ -19,6 +19,7 @@
#include "romload.h"
#include "screen.h"
#include "softlist.h"
#include "speaker.h"
#include <set>
#include <sstream>
@ -208,7 +209,7 @@ machine_static_info::machine_static_info(const ui_options &options, machine_conf
for (device_t &device : device_enumerator(config.root_device()))
{
// the "no sound hardware" warning doesn't make sense when you plug in a sound card
if (dynamic_cast<device_sound_interface *>(&device))
if (dynamic_cast<speaker_device *>(&device))
m_flags &= ~::machine_flags::NO_SOUND_HW;
// build overall emulation status