mirror of
https://github.com/dingusdev/dingusppc.git
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35c86ad6bf
Result of running IWYU (https://include-what-you-use.org/) and applying most of the suggestions about unncessary includes and forward declarations. Was motivated by observing that <thread> was being included in ppcopcodes.cpp even though it was unused (found while researching the use of threads), but seems generally good to help with build times and correctness.
190 lines
5.5 KiB
C++
190 lines
5.5 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** AWAC sound device emulation.
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Currently supported audio codecs:
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- PDM AWACs in Nubus Power Macintosh models
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- Screamer AWACs in Beige G3
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*/
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#include <devices/deviceregistry.h>
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#include <devices/sound/awacs.h>
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#include <devices/sound/soundserver.h>
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#include <endianswap.h>
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#include <machines/machinebase.h>
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#include <loguru.hpp>
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AwacsBase::AwacsBase(std::string name)
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{
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supports_types(HWCompType::SND_CODEC);
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this->name = name;
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// connect to SoundServer
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this->snd_server = dynamic_cast<SoundServer *>
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(gMachineObj->get_comp_by_name("SoundServer"));
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this->out_stream_ready = false;
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}
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void AwacsBase::set_sample_rate(int sr_id)
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{
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if (sr_id > this->max_sr_id) {
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LOG_F(ERROR, "%s: invalid sample rate ID %d!", this->name.c_str(), sr_id);
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} else {
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this->cur_sample_rate = this->sr_table[sr_id];
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}
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};
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void AwacsBase::dma_out_start()
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{
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int err;
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bool reopen = false;
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if (this->out_stream_ready && this->out_sample_rate != this->cur_sample_rate)
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reopen = true;
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if (reopen) {
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snd_server->close_out_stream();
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this->out_stream_ready = false;
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}
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if (!this->out_stream_ready || reopen) {
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if ((err = this->snd_server->open_out_stream(this->cur_sample_rate,
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(void *)this->dma_out_ch))) {
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LOG_F(ERROR, "%s: unable to open sound output stream: %d",
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this->name.c_str(), err);
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return;
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}
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if ((err = snd_server->start_out_stream())) {
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LOG_F(ERROR, "%s: could not start sound output stream", this->name.c_str());
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}
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this->out_sample_rate = this->cur_sample_rate;
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this->out_stream_ready = true;
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}
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}
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void AwacsBase::dma_out_stop()
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{
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if (this->out_stream_ready) {
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snd_server->close_out_stream();
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this->out_stream_ready = false;
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}
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}
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//=========================== PDM-style AWACs =================================
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AwacDevicePdm::AwacDevicePdm() : AwacsBase("AWAC-PDM")
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{
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static int pdm_awac_freqs[3] = {22050, 29400, 44100};
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// PDM-style AWACs only supports three sample rates
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this->sr_table = pdm_awac_freqs;
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this->max_sr_id = 2;
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}
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uint32_t AwacDevicePdm::read_stat()
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{
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LOG_F(INFO, "%s: status requested!", this->name.c_str());
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// TODO: return valid status including manufacturer & device IDs
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return 0;
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}
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void AwacDevicePdm::write_ctrl(uint32_t addr, uint16_t value)
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{
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if (addr <= 4) {
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this->ctrl_regs[addr] = value;
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} else {
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LOG_F(ERROR, "%s: invalid control register address %d!", this->name.c_str(),
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addr);
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}
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}
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//============================= Screamer AWACs ================================
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AwacsScreamer::AwacsScreamer(std::string name) : MacioSndCodec(name)
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{
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static int screamer_freqs[8] = {
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44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
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};
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this->sr_table = screamer_freqs;
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this->max_sr_id = 7;
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}
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int AwacsScreamer::device_postinit() {
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this->audio_proc = std::unique_ptr<AudioProcessor> (new AudioProcessor());
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/* register audio processor chip with the I2C bus */
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I2CBus* i2c_bus = dynamic_cast<I2CBus*>(gMachineObj->get_comp_by_type(HWCompType::I2C_HOST));
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i2c_bus->register_device(0x45, this->audio_proc.get());
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return 0;
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}
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uint32_t AwacsScreamer::snd_ctrl_read(uint32_t offset, int size)
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{
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switch (offset) {
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case AWAC_SOUND_CTRL_REG:
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return this->snd_ctrl_reg;
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case AWAC_CODEC_CTRL_REG:
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return this->is_busy;
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case AWAC_CODEC_STATUS_REG:
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return (AWAC_AVAILABLE << 8) | (AWAC_MAKER_CRYSTAL << 16) | (AWAC_REV_SCREAMER << 20);
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default:
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LOG_F(ERROR, "%s: unsupported register at offset 0x%X", this->name.c_str(), offset);
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}
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return 0;
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}
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void AwacsScreamer::snd_ctrl_write(uint32_t offset, uint32_t value, int size)
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{
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int subframe, reg_num;
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uint16_t data;
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switch (offset) {
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case AWAC_SOUND_CTRL_REG:
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this->snd_ctrl_reg = BYTESWAP_32(value);
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this->set_sample_rate((this->snd_ctrl_reg >> 8) & 7);
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break;
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case AWAC_CODEC_CTRL_REG:
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subframe = (value >> 14) & 3;
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reg_num = (value >> 20) & 7;
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data = ((value >> 8) & 0xF00) | ((value >> 24) & 0xFF);
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LOG_F(9, "%s subframe = %d, reg = %d, data = %08X", this->name.c_str(),
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subframe, reg_num, data);
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if (!subframe)
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this->control_regs[reg_num] = data;
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break;
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default:
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LOG_F(ERROR, "%s: unsupported register at offset 0x%X", this->name.c_str(),
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offset);
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}
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}
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static const DeviceDescription Screamer_Descriptor = {
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AwacsScreamer::create, {}, {}
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};
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REGISTER_DEVICE(ScreamerSnd, Screamer_Descriptor);
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