mirror of
https://github.com/holub/mame
synced 2025-05-05 05:53:05 +03:00
67663501d7
Moved delegates into /src/lib/util to enable usage of delegates in other project parts Moved mame_printf_* calls into /src/osd/osdcore.c and renamed them to osd_printf_* Changed mess.mak to display compilation of ymmu100.ppm nicely
161 lines
4.5 KiB
C
161 lines
4.5 KiB
C
// license:BSD-3-Clause
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// copyright-holders:Aaron Giles
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/***************************************************************************
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speaker.c
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Speaker output sound device.
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***************************************************************************/
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#include "emu.h"
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#include "emuopts.h"
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#include "osdepend.h"
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#include "config.h"
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#include "sound/wavwrite.h"
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//**************************************************************************
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// DEBUGGING
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//**************************************************************************
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#define VERBOSE (0)
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#define VPRINTF(x) do { if (VERBOSE) osd_printf_debug x; } while (0)
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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// device type definition
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const device_type SPEAKER = &device_creator<speaker_device>;
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//**************************************************************************
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// LIVE SPEAKER DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// speaker_device - constructor
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//-------------------------------------------------
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speaker_device::speaker_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, SPEAKER, "Speaker", tag, owner, clock, "speaker", __FILE__),
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device_mixer_interface(mconfig, *this),
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m_x(0.0),
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m_y(0.0),
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m_z(0.0)
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#ifdef MAME_DEBUG
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,
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m_max_sample(0),
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m_clipped_samples(0),
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m_total_samples(0)
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#endif
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{
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}
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//-------------------------------------------------
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// ~speaker_device - destructor
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//-------------------------------------------------
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speaker_device::~speaker_device()
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{
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#ifdef MAME_DEBUG
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// log the maximum sample values for all speakers
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if (m_max_sample > 0)
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osd_printf_debug("Speaker \"%s\" - max = %d (gain *= %f) - %d%% samples clipped\n", tag(), m_max_sample, 32767.0 / (m_max_sample ? m_max_sample : 1), (int)((double)m_clipped_samples * 100.0 / m_total_samples));
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#endif
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}
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//-------------------------------------------------
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// static_set_position - configuration helper to
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// set the speaker position
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//-------------------------------------------------
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void speaker_device::static_set_position(device_t &device, double x, double y, double z)
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{
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speaker_device &speaker = downcast<speaker_device &>(device);
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speaker.m_x = x;
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speaker.m_y = y;
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speaker.m_z = z;
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}
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//-------------------------------------------------
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// mix - mix in samples from the speaker's stream
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//-------------------------------------------------
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void speaker_device::mix(INT32 *leftmix, INT32 *rightmix, int &samples_this_update, bool suppress)
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{
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// skip if no stream
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if (m_mixer_stream == NULL)
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return;
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// update the stream, getting the start/end pointers around the operation
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int numsamples;
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const stream_sample_t *stream_buf = m_mixer_stream->output_since_last_update(0, numsamples);
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// set or assert that all streams have the same count
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if (samples_this_update == 0)
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{
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samples_this_update = numsamples;
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// reset the mixing streams
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memset(leftmix, 0, samples_this_update * sizeof(*leftmix));
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memset(rightmix, 0, samples_this_update * sizeof(*rightmix));
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}
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assert(samples_this_update == numsamples);
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#ifdef MAME_DEBUG
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// debug version: keep track of the maximum sample
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for (int sample = 0; sample < samples_this_update; sample++)
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{
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if (stream_buf[sample] > m_max_sample)
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m_max_sample = stream_buf[sample];
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else if (-stream_buf[sample] > m_max_sample)
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m_max_sample = -stream_buf[sample];
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if (stream_buf[sample] > 32767 || stream_buf[sample] < -32768)
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m_clipped_samples++;
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m_total_samples++;
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}
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#endif
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// mix if sound is enabled
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if (!suppress)
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{
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// if the speaker is centered, send to both left and right
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if (m_x == 0)
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for (int sample = 0; sample < samples_this_update; sample++)
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{
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leftmix[sample] += stream_buf[sample];
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rightmix[sample] += stream_buf[sample];
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}
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// if the speaker is to the left, send only to the left
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else if (m_x < 0)
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for (int sample = 0; sample < samples_this_update; sample++)
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leftmix[sample] += stream_buf[sample];
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// if the speaker is to the right, send only to the right
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else
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for (int sample = 0; sample < samples_this_update; sample++)
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rightmix[sample] += stream_buf[sample];
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}
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}
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//-------------------------------------------------
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// device_start - handle device startup
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//-------------------------------------------------
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void speaker_device::device_start()
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{
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// dummy save to make device.c happy
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}
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