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Added adjustable gain to fixfreq.c. (nw)

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This commit is contained in:
couriersud 2015-05-01 18:38:16 +02:00
parent 6688996c44
commit 0cfce891a2
2 changed files with 14 additions and 4 deletions
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13
src/emu/video/fixfreq.c
View File

@ -45,7 +45,8 @@ fixedfreq_device::fixedfreq_device(const machine_config &mconfig, device_type ty
m_vsync(492),
m_vbackporch(525),
m_fieldcount(2),
m_sync_threshold(0.3)
m_sync_threshold(0.3),
m_gain(1.0 / 3.7)
{
}
@ -63,7 +64,8 @@ fixedfreq_device::fixedfreq_device(const machine_config &mconfig, const char *ta
m_vsync(492),
m_vbackporch(525),
m_fieldcount(2),
m_sync_threshold(0.3)
m_sync_threshold(0.3),
m_gain(1.0 / 3.7)
{
}
@ -247,10 +249,11 @@ NETDEV_ANALOG_CALLBACK_MEMBER(fixedfreq_device::update_vid)
rgb_t col;
if (m_vid < m_sync_threshold)
// Mark sync areas
col = rgb_t(255, 0, 0);
else
{
int colv = (int) ((m_vid - m_sync_threshold) / 3.7 * 255.0);
int colv = (int) ((m_vid - m_sync_threshold) * m_gain * 255.0);
if (colv > 255)
colv = 255;
col = rgb_t(colv, colv, colv);
@ -272,6 +275,7 @@ NETDEV_ANALOG_CALLBACK_MEMBER(fixedfreq_device::update_vid)
if (sync & 2)
{
VERBOSE_OUT(("HSYNC up %d\n", pixels));
//if (m_last_y == 27) printf("HSYNC up %d %d\n", m_last_y, pixels);
}
if (sync & 4)
{
@ -287,7 +291,8 @@ NETDEV_ANALOG_CALLBACK_MEMBER(fixedfreq_device::update_vid)
m_last_vsync_time = time;
}
if ((sync & 2) && !m_sig_vsync)
// FIXME: pixels > 50 filters some spurious hysnc on line 27 in breakout
if ((sync & 2) && !m_sig_vsync && (pixels > 50))
{
m_last_y += m_fieldcount;
m_last_x = 0;

5
src/emu/video/fixfreq.h
View File

@ -40,6 +40,9 @@
#define MCFG_FIXFREQ_SYNC_THRESHOLD(_threshold) \
fixedfreq_device::set_threshold(*device, _threshold);
#define MCFG_FIXFREQ_GAIN(_gain) \
fixedfreq_device::set_gain(*device, _gain);
// pre-defined configurations
//ModeLine "720x480@30i" 13.5 720 736 799 858 480 486 492 525 interlace -hsync -vsync
@ -73,6 +76,7 @@ public:
static void set_minitor_clock(device_t &device, UINT32 clock) { downcast<fixedfreq_device &>(device).m_monitor_clock = clock; }
static void set_fieldcount(device_t &device, int count) { downcast<fixedfreq_device &>(device).m_fieldcount = count; }
static void set_threshold(device_t &device, double threshold) { downcast<fixedfreq_device &>(device).m_sync_threshold = threshold; }
static void set_gain(device_t &device, double gain) { downcast<fixedfreq_device &>(device).m_gain = gain; }
static void set_horz_params(device_t &device, int visible, int frontporch, int sync, int backporch)
{
fixedfreq_device &dev = downcast<fixedfreq_device &>(device);
@ -135,6 +139,7 @@ private:
int m_vbackporch;
int m_fieldcount;
double m_sync_threshold;
double m_gain;
/* sync separator */
double m_vint;