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https://github.com/holub/mame
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bf0cfcf13d
-m68705, m68hc05: Removed MCFG. [Ryan Holtz] -qix: First-pass cleanup. [Ryan Holtz] -core: Fixed spelling of "nonexistent". [Ryan Holtz]
474 lines
15 KiB
C++
474 lines
15 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Aaron Giles
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/***************************************************************************
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disound.c
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Device sound interfaces.
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***************************************************************************/
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#include "emu.h"
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#include "speaker.h"
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//**************************************************************************
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// DEVICE CONFIG SOUND INTERFACE
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//**************************************************************************
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//-------------------------------------------------
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// device_sound_interface - constructor
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//-------------------------------------------------
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device_sound_interface::device_sound_interface(const machine_config &mconfig, device_t &device)
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: device_interface(device, "sound")
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, m_outputs(0)
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, m_auto_allocated_inputs(0)
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{
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}
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//-------------------------------------------------
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// ~device_sound_interface - destructor
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//-------------------------------------------------
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device_sound_interface::~device_sound_interface()
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{
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}
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//-------------------------------------------------
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// add_route - send sound output to a consumer
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//-------------------------------------------------
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device_sound_interface &device_sound_interface::add_route(u32 output, const char *target, double gain, u32 input, u32 mixoutput)
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{
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assert(!device().started());
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m_route_list.emplace_back(sound_route{ output, input, mixoutput, float(gain), device().mconfig().current_device(), target });
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return *this;
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}
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device_sound_interface &device_sound_interface::add_route(u32 output, device_sound_interface &target, double gain, u32 input, u32 mixoutput)
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{
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assert(!device().started());
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m_route_list.emplace_back(sound_route{ output, input, mixoutput, float(gain), target.device(), DEVICE_SELF });
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return *this;
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}
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device_sound_interface &device_sound_interface::add_route(u32 output, speaker_device &target, double gain, u32 input, u32 mixoutput)
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{
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assert(!device().started());
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m_route_list.emplace_back(sound_route{ output, input, mixoutput, float(gain), target, DEVICE_SELF });
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return *this;
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}
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//-------------------------------------------------
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// stream_alloc - allocate a stream implicitly
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// associated with this device
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//-------------------------------------------------
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sound_stream *device_sound_interface::stream_alloc(int inputs, int outputs, int sample_rate)
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{
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return device().machine().sound().stream_alloc(*this, inputs, outputs, sample_rate);
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}
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//-------------------------------------------------
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// inputs - return the total number of inputs
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// for the given device
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//-------------------------------------------------
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int device_sound_interface::inputs() const
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{
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// scan the list counting streams we own and summing their inputs
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int inputs = 0;
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for (auto &stream : m_device.machine().sound().streams())
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if (&stream->device() == &m_device)
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inputs += stream->input_count();
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return inputs;
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}
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//-------------------------------------------------
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// outputs - return the total number of outputs
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// for the given device
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//-------------------------------------------------
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int device_sound_interface::outputs() const
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{
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// scan the list counting streams we own and summing their outputs
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int outputs = 0;
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for (auto &stream : m_device.machine().sound().streams())
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if (&stream->device() == &m_device)
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outputs += stream->output_count();
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return outputs;
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}
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//-------------------------------------------------
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// input_to_stream_input - convert a device's
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// input index to a stream and the input index
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// on that stream
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//-------------------------------------------------
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sound_stream *device_sound_interface::input_to_stream_input(int inputnum, int &stream_inputnum) const
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{
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assert(inputnum >= 0);
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// scan the list looking for streams owned by this device
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for (auto &stream : m_device.machine().sound().streams())
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if (&stream->device() == &m_device)
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{
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if (inputnum < stream->input_count())
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{
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stream_inputnum = inputnum;
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return stream.get();
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}
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inputnum -= stream->input_count();
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}
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// not found
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return nullptr;
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}
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//-------------------------------------------------
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// output_to_stream_output - convert a device's
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// output index to a stream and the output index
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// on that stream
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//-------------------------------------------------
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sound_stream *device_sound_interface::output_to_stream_output(int outputnum, int &stream_outputnum) const
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{
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assert(outputnum >= 0);
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// scan the list looking for streams owned by this device
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for (auto &stream : m_device.machine().sound().streams())
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if (&stream->device() == &device())
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{
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if (outputnum < stream->output_count())
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{
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stream_outputnum = outputnum;
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return stream.get();
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}
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outputnum -= stream->output_count();
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}
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// not found
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return nullptr;
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}
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//-------------------------------------------------
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// input_gain - return the gain on the given
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// input index of the device
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//-------------------------------------------------
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float device_sound_interface::input_gain(int inputnum) const
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{
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int stream_inputnum;
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sound_stream *stream = input_to_stream_input(inputnum, stream_inputnum);
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return (stream != nullptr) ? stream->input_gain(stream_inputnum) : 0.0f;
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}
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//-------------------------------------------------
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// output_gain - return the gain on the given
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// output index of the device
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//-------------------------------------------------
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float device_sound_interface::output_gain(int outputnum) const
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{
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int stream_outputnum;
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sound_stream *stream = output_to_stream_output(outputnum, stream_outputnum);
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return (stream != nullptr) ? stream->output_gain(stream_outputnum) : 0.0f;
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}
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//-------------------------------------------------
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// set_input_gain - set the gain on the given
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// input index of the device
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//-------------------------------------------------
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void device_sound_interface::set_input_gain(int inputnum, float gain)
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{
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int stream_inputnum;
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sound_stream *stream = input_to_stream_input(inputnum, stream_inputnum);
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if (stream != nullptr)
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stream->set_input_gain(stream_inputnum, gain);
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}
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//-------------------------------------------------
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// set_output_gain - set the gain on the given
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// output index of the device
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//-------------------------------------------------
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void device_sound_interface::set_output_gain(int outputnum, float gain)
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{
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// handle ALL_OUTPUTS as a special case
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if (outputnum == ALL_OUTPUTS)
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{
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for (auto &stream : m_device.machine().sound().streams())
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if (&stream->device() == &device())
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for (int num = 0; num < stream->output_count(); num++)
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stream->set_output_gain(num, gain);
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}
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// look up the stream and stream output index
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else
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{
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int stream_outputnum;
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sound_stream *stream = output_to_stream_output(outputnum, stream_outputnum);
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if (stream != nullptr)
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stream->set_output_gain(stream_outputnum, gain);
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}
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}
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//-------------------------------------------------
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// inputnum_from_device - return the input number
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// that is connected to the given device's output
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//-------------------------------------------------
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int device_sound_interface::inputnum_from_device(device_t &source_device, int outputnum) const
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{
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int overall = 0;
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for (auto &stream : m_device.machine().sound().streams())
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if (&stream->device() == &device())
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for (int inputnum = 0; inputnum < stream->input_count(); inputnum++, overall++)
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if (stream->input_source_device(inputnum) == &source_device && stream->input_source_outputnum(inputnum) == outputnum)
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return overall;
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return -1;
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}
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//-------------------------------------------------
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// interface_validity_check - validation for a
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// device after the configuration has been
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// constructed
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//-------------------------------------------------
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void device_sound_interface::interface_validity_check(validity_checker &valid) const
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{
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// loop over all the routes
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for (sound_route const &route : routes())
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{
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// find a device with the requested tag
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device_t const *const target = route.m_base.get().subdevice(route.m_target.c_str());
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if (!target)
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osd_printf_error("Attempting to route sound to non-existent device '%s'\n", route.m_base.get().subtag(route.m_target.c_str()).c_str());
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// if it's not a speaker or a sound device, error
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device_sound_interface const *sound;
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if (target && (target->type() != SPEAKER) && !target->interface(sound))
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osd_printf_error("Attempting to route sound to a non-sound device '%s' (%s)\n", target->tag(), target->name());
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}
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}
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//-------------------------------------------------
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// interface_pre_start - make sure all our input
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// devices are started
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//-------------------------------------------------
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void device_sound_interface::interface_pre_start()
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{
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// scan all the sound devices
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sound_interface_iterator iter(m_device.machine().root_device());
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for (device_sound_interface const &sound : iter)
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{
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// scan each route on the device
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for (sound_route const &route : sound.routes())
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{
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// see if we are the target of this route; if we are, make sure the source device is started
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device_t *const target_device = route.m_base.get().subdevice(route.m_target.c_str());
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if ((target_device == &m_device) && !sound.device().started())
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throw device_missing_dependencies();
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}
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}
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// now iterate through devices again and assign any auto-allocated inputs
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m_auto_allocated_inputs = 0;
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for (device_sound_interface &sound : iter)
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{
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// scan each route on the device
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for (sound_route &route : sound.routes())
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{
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// see if we are the target of this route
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device_t *const target_device = route.m_base.get().subdevice(route.m_target.c_str());
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if ((target_device == &m_device) && (route.m_input == AUTO_ALLOC_INPUT))
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{
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route.m_input = m_auto_allocated_inputs;
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m_auto_allocated_inputs += (route.m_output == ALL_OUTPUTS) ? sound.outputs() : 1;
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}
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}
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}
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}
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//-------------------------------------------------
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// interface_post_start - verify that state was
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// properly set up
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//-------------------------------------------------
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void device_sound_interface::interface_post_start()
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{
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// iterate over all the sound devices
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for (device_sound_interface &sound : sound_interface_iterator(m_device.machine().root_device()))
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{
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// scan each route on the device
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for (sound_route const &route : sound.routes())
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{
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// if we are the target of this route, hook it up
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device_t *const target_device = route.m_base.get().subdevice(route.m_target.c_str());
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if (target_device == &m_device)
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{
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// iterate over all outputs, matching any that apply
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int inputnum = route.m_input;
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int const numoutputs = sound.outputs();
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for (int outputnum = 0; outputnum < numoutputs; outputnum++)
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if ((route.m_output == outputnum) || (route.m_output == ALL_OUTPUTS))
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{
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// find the output stream to connect from
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int streamoutputnum;
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sound_stream *const outputstream = sound.output_to_stream_output(outputnum, streamoutputnum);
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if (!outputstream)
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fatalerror("Sound device '%s' specifies route for nonexistent output #%d\n", sound.device().tag(), outputnum);
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// find the input stream to connect to
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int streaminputnum;
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sound_stream *const inputstream = input_to_stream_input(inputnum++, streaminputnum);
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if (!inputstream)
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fatalerror("Sound device '%s' targeted output #%d to nonexistent device '%s' input %d\n", sound.device().tag(), outputnum, m_device.tag(), inputnum - 1);
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// set the input
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inputstream->set_input(streaminputnum, outputstream, streamoutputnum, route.m_gain);
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}
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}
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}
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}
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}
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//-------------------------------------------------
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// interface_pre_reset - called prior to
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// resetting the device
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//-------------------------------------------------
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void device_sound_interface::interface_pre_reset()
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{
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// update all streams on this device prior to reset
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for (auto &stream : m_device.machine().sound().streams())
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if (&stream->device() == &device())
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stream->update();
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}
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//**************************************************************************
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// SIMPLE DERIVED MIXER INTERFACE
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//**************************************************************************
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//-------------------------------------------------
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// device_mixer_interface - constructor
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//-------------------------------------------------
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device_mixer_interface::device_mixer_interface(const machine_config &mconfig, device_t &device, int outputs)
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: device_sound_interface(mconfig, device),
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m_outputs(outputs),
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m_mixer_stream(nullptr)
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{
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}
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//-------------------------------------------------
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// ~device_mixer_interface - destructor
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//-------------------------------------------------
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device_mixer_interface::~device_mixer_interface()
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{
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}
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//-------------------------------------------------
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// interface_pre_start - perform startup prior
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// to the device startup
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//-------------------------------------------------
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void device_mixer_interface::interface_pre_start()
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{
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// call our parent
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device_sound_interface::interface_pre_start();
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// no inputs? that's weird
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if (m_auto_allocated_inputs == 0)
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{
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device().logerror("Warning: mixer \"%s\" has no inputs\n", device().tag());
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return;
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}
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// generate the output map
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m_outputmap.resize(m_auto_allocated_inputs);
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// iterate through all routes that point to us and note their mixer output
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for (device_sound_interface const &sound : sound_interface_iterator(m_device.machine().root_device()))
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{
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for (sound_route const &route : sound.routes())
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{
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// see if we are the target of this route
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device_t *const target_device = route.m_base.get().subdevice(route.m_target.c_str());
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if ((target_device == &device()) && (route.m_input < m_auto_allocated_inputs))
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{
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int const count = (route.m_output == ALL_OUTPUTS) ? sound.outputs() : 1;
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for (int output = 0; output < count; output++)
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m_outputmap[route.m_input + output] = route.m_mixoutput;
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}
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}
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}
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// allocate the mixer stream
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m_mixer_stream = stream_alloc(m_auto_allocated_inputs, m_outputs, device().machine().sample_rate());
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}
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//-------------------------------------------------
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// interface_post_load - after we load a save
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// state be sure to update the mixer stream's
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// output sample rate
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//-------------------------------------------------
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void device_mixer_interface::interface_post_load()
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{
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// Beware that there's not going to be a mixer stream if there was
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// no inputs
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if (m_mixer_stream)
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m_mixer_stream->set_sample_rate(device().machine().sample_rate());
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// call our parent
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device_sound_interface::interface_post_load();
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}
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//-------------------------------------------------
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// mixer_update - mix all inputs to one output
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//-------------------------------------------------
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void device_mixer_interface::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
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{
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// clear output buffers
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for (int output = 0; output < m_outputs; output++)
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memset(outputs[output], 0, samples * sizeof(outputs[0][0]));
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// loop over samples
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const u8 *outmap = &m_outputmap[0];
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for (int pos = 0; pos < samples; pos++)
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{
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// for each input, add it to the appropriate output
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for (int inp = 0; inp < m_auto_allocated_inputs; inp++)
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outputs[outmap[inp]][pos] += inputs[inp][pos];
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}
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}
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