/*************************************************************************** disound.c Device sound interfaces. **************************************************************************** Copyright Aaron Giles All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name 'MAME' nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ***************************************************************************/ #include "emu.h" #include "streams.h" //************************************************************************** // DEVICE CONFIG SOUND INTERFACE //************************************************************************** //------------------------------------------------- // device_config_sound_interface - constructor //------------------------------------------------- device_config_sound_interface::device_config_sound_interface(const machine_config &mconfig, device_config &devconfig) : device_config_interface(mconfig, devconfig), m_route_list(NULL) { } //------------------------------------------------- // ~device_config_sound_interface - destructor //------------------------------------------------- device_config_sound_interface::~device_config_sound_interface() { reset_routes(); } //------------------------------------------------- // interface_process_token - token processing for // the sound interface //------------------------------------------------- bool device_config_sound_interface::interface_process_token(UINT32 entrytype, const machine_config_token *&tokens) { switch (entrytype) { // custom config 1 is a new route case MCONFIG_TOKEN_DISOUND_ROUTE: { // put back the token that was originally fetched so we can grab a packed 64-bit token TOKEN_UNGET_UINT32(tokens); // extract data int output, input; UINT32 gain; TOKEN_GET_UINT64_UNPACK4(tokens, entrytype, 8, output, 12, input, 12, gain, 32); float fgain = (float)gain * (1.0f / (float)(1 << 24)); const char *target = TOKEN_GET_STRING(tokens); // allocate a new route sound_route **routeptr; for (routeptr = &m_route_list; *routeptr != NULL; routeptr = &(*routeptr)->m_next) ; *routeptr = global_alloc(sound_route(output, input, fgain, target)); return true; } // custom config 2 resets the sound routes case MCONFIG_TOKEN_DISOUND_RESET: reset_routes(); return true; } return false; } //------------------------------------------------- // interface_validity_check - validation for a // device after the configuration has been // constructed //------------------------------------------------- bool device_config_sound_interface::interface_validity_check(const game_driver &driver) const { bool error = false; // loop over all the routes for (const sound_route *route = m_route_list; route != NULL; route = route->m_next) { // find a device with the requested tag const device_config *target = m_machine_config.devicelist.find(route->m_target); if (target == NULL) { mame_printf_error("%s: %s attempting to route sound to non-existant device '%s'\n", driver.source_file, driver.name, route->m_target); error = true; } // if it's not a speaker or a sound device, error const device_config_sound_interface *sound; if (target->type() != SPEAKER && !target->interface(sound)) { mame_printf_error("%s: %s attempting to route sound to a non-sound device '%s' (%s)\n", driver.source_file, driver.name, route->m_target, target->name()); error = true; } } return error; } //------------------------------------------------- // reset_routes - free up all allocated routes // in this configuration //------------------------------------------------- void device_config_sound_interface::reset_routes() { // loop until all are gone while (m_route_list != NULL) { sound_route *temp = m_route_list; m_route_list = temp->m_next; global_free(temp); } } //------------------------------------------------- // sound_route - constructor //------------------------------------------------- device_config_sound_interface::sound_route::sound_route(int output, int input, float gain, const char *target) : m_next(NULL), m_output(output), m_input(input), m_gain(gain), m_target(target) { } //************************************************************************** // DEVICE CONFIG SOUND INTERFACE //************************************************************************** //------------------------------------------------- // device_sound_interface - constructor //------------------------------------------------- device_sound_interface::device_sound_interface(running_machine &machine, const device_config &config, device_t &device) : device_interface(machine, config, device), m_outputs(0), m_sound_config(dynamic_cast(config)) { } //------------------------------------------------- // ~device_sound_interface - destructor //------------------------------------------------- device_sound_interface::~device_sound_interface() { } //------------------------------------------------- // interface_post_start - verify that state was // properly set up //------------------------------------------------- void device_sound_interface::interface_post_start() { // count the outputs for (int outputnum = 0; outputnum < MAX_OUTPUTS; outputnum++) { // stop when we run out of streams sound_stream *stream = stream_find_by_device(&m_device, outputnum); if (stream == NULL) break; // accumulate the number of outputs from this stream int numoutputs = stream_get_outputs(stream); assert(m_outputs + numoutputs < MAX_OUTPUTS); // fill in the array for (int curoutput = 0; curoutput < numoutputs; curoutput++) { sound_output *output = &m_output[m_outputs++]; output->stream = stream; output->output = curoutput; } } }