mirror of https://github.com/probonopd/MiniDexed
probonopd
2 months ago
parent
6a9d3a62d9
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9322988fbd
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//
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// performance_sysex_handler.cpp
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//
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// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
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// Copyright (C) 2025 The MiniDexed Team
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//
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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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//
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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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//
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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 <http://www.gnu.org/licenses/>.
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//
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#include "performance_sysex.h" |
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#include "performanceconfig.h" |
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#include <circle/logger.h> |
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#include <cstring> |
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#include "minidexed.h" |
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#include "mididevice.h" |
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LOGMODULE ("PerformanceSysEx"); |
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static constexpr uint8_t SYSEX_START = 0xF0; |
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static constexpr uint8_t SYSEX_END = 0xF7; |
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static constexpr uint8_t MANUFACTURER_ID = 0x7D; |
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static constexpr uint8_t CMD_GET = 0x10; |
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static constexpr uint8_t CMD_SET = 0x20; |
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static void send_sysex_response(const uint8_t* data, size_t len, CMIDIDevice* pDevice, unsigned nCable) { |
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if (pDevice) { |
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pDevice->Send(data, len, nCable); |
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LOGNOTE("Sent SysEx response (%u bytes) on cable %u", (unsigned)len, nCable); |
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} |
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} |
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void handle_performance_sysex(const uint8_t* pMessage, CMIDIDevice* pDevice, CPerformanceConfig* perf, unsigned nCable) { |
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if (!pMessage || !perf) { |
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LOGERR("handle_performance_sysex: Null pointer or PerformanceConfig not set"); |
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return; |
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} |
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if (pMessage[0] != SYSEX_START) { |
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LOGERR("SysEx: Invalid start byte: 0x%02X", pMessage[0]); |
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return; |
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} |
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int len = 0; |
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while (len < 256 && pMessage[len] != SYSEX_END) ++len; |
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if (len < 3 || pMessage[len] != SYSEX_END) { |
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LOGERR("SysEx: No end byte or too short"); |
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return; |
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} |
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if (pMessage[1] != MANUFACTURER_ID) { |
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LOGERR("SysEx: Invalid manufacturer ID: 0x%02X", pMessage[1]); |
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return; |
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} |
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uint8_t tg = 0xFF; // 0xFF = global
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uint8_t cmd = 0; |
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uint8_t offset = 0; |
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if (pMessage[2] == CMD_GET || pMessage[2] == CMD_SET) { |
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cmd = pMessage[2]; |
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offset = 3; |
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LOGNOTE("SysEx: Global %s request", cmd == CMD_GET ? "GET" : "SET"); |
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} else if (pMessage[2] < 0x80 && (pMessage[3] == CMD_GET || pMessage[3] == CMD_SET)) { |
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tg = pMessage[2]; |
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cmd = pMessage[3]; |
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offset = 4; |
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LOGNOTE("SysEx: TG-specific %s request for TG %u", cmd == CMD_GET ? "GET" : "SET", tg); |
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} else { |
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LOGERR("SysEx: Unrecognized message structure"); |
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return; |
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} |
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if (offset == len) { |
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// Dump all global or all TG parameters
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if (cmd == CMD_GET) { |
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if (tg == 0xFF) { |
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// Dump all global
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size_t count = 0; |
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const uint16_t* params = CPerformanceConfig::GetAllGlobalParams(count); |
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uint16_t values[16] = {0}; |
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if (perf->GetGlobalParameters(params, values, count)) { |
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LOGNOTE("SysEx: Dumping all global parameters"); |
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uint8_t resp[64] = {0}; |
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resp[0] = SYSEX_START; |
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resp[1] = MANUFACTURER_ID; |
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resp[2] = CMD_GET; |
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size_t idx = 3; |
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for (size_t i = 0; i < count; ++i) { |
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resp[idx++] = (params[i] >> 8) & 0xFF; |
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resp[idx++] = params[i] & 0xFF; |
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resp[idx++] = (values[i] >> 8) & 0xFF; |
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resp[idx++] = values[i] & 0xFF; |
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LOGNOTE(" Param 0x%04X = 0x%04X", params[i], values[i]); |
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} |
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resp[idx++] = SYSEX_END; |
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send_sysex_response(resp, idx, pDevice, nCable); |
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} else { |
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LOGERR("SysEx: Failed to get all global parameters"); |
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} |
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} else { |
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// Dump all TG
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size_t count = 0; |
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const uint16_t* params = CPerformanceConfig::GetAllTGParams(count); |
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uint16_t values[32] = {0}; |
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if (perf->GetTGParameters(params, values, count, tg)) { |
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LOGNOTE("SysEx: Dumping all TG parameters for TG %u", tg); |
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uint8_t resp[128] = {0}; |
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resp[0] = SYSEX_START; |
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resp[1] = MANUFACTURER_ID; |
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resp[2] = tg; |
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resp[3] = CMD_GET; |
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size_t idx = 4; |
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for (size_t i = 0; i < count; ++i) { |
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resp[idx++] = (params[i] >> 8) & 0xFF; |
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resp[idx++] = params[i] & 0xFF; |
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resp[idx++] = (values[i] >> 8) & 0xFF; |
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resp[idx++] = values[i] & 0xFF; |
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LOGNOTE(" Param 0x%04X = 0x%04X", params[i], values[i]); |
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} |
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resp[idx++] = SYSEX_END; |
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send_sysex_response(resp, idx, pDevice, nCable); |
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} else { |
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LOGERR("SysEx: Failed to get all TG parameters for TG %u", tg); |
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} |
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} |
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} |
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return; |
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} |
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while (offset + 1 < len) { |
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uint16_t param = (pMessage[offset] << 8) | pMessage[offset+1]; |
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offset += 2; |
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if (cmd == CMD_GET) { |
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uint16_t value = 0; |
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bool ok = false; |
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if (tg == 0xFF) { |
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ok = perf->GetGlobalParameters(¶m, &value, 1); |
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LOGNOTE("SysEx: GET global param 0x%04X -> 0x%04X (%s)", param, value, ok ? "OK" : "FAIL"); |
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// Build and send response
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uint8_t resp[9] = {SYSEX_START, MANUFACTURER_ID, CMD_GET, (uint8_t)(param >> 8), (uint8_t)(param & 0xFF), (uint8_t)(value >> 8), (uint8_t)(value & 0xFF), SYSEX_END}; |
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send_sysex_response(resp, 8, pDevice, nCable); |
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} else { |
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ok = perf->GetTGParameters(¶m, &value, 1, tg); |
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LOGNOTE("SysEx: GET TG %u param 0x%04X -> 0x%04X (%s)", tg, param, value, ok ? "OK" : "FAIL"); |
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uint8_t resp[10] = {SYSEX_START, MANUFACTURER_ID, tg, CMD_GET, (uint8_t)(param >> 8), (uint8_t)(param & 0xFF), (uint8_t)(value >> 8), (uint8_t)(value & 0xFF), SYSEX_END}; |
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send_sysex_response(resp, 9, pDevice, nCable); |
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} |
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} else if (cmd == CMD_SET) { |
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if (offset + 1 >= len) { |
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LOGERR("SysEx: SET param 0x%04X missing value bytes", param); |
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break; |
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} |
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uint16_t value = (pMessage[offset] << 8) | pMessage[offset+1]; |
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offset += 2; |
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bool ok = false; |
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if (tg == 0xFF) { |
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ok = perf->SetGlobalParameters(¶m, &value, 1); |
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LOGNOTE("SysEx: SET global param 0x%04X = 0x%04X (%s)", param, value, ok ? "OK" : "FAIL"); |
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} else { |
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ok = perf->SetTGParameters(¶m, &value, 1, tg); |
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LOGNOTE("SysEx: SET TG %u param 0x%04X = 0x%04X (%s)", tg, param, value, ok ? "OK" : "FAIL"); |
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} |
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} |
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} |
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} |
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/*
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Examples of MiniDexed Performance SysEx messages and expected handler behavior: |
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1. Get a Global Parameter (e.g., CompressorEnable) |
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Send: F0 7D 10 00 00 F7 |
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- Logs GET for global param 0x0000, queries value, logs result. |
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2. Set a Global Parameter (e.g., ReverbEnable ON) |
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Send: F0 7D 20 00 01 00 01 F7 |
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- Logs SET for global param 0x0001, updates value, logs result. |
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3. Get All Global Parameters |
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Send: F0 7D 10 F7 |
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- Logs and dumps all global parameters and values. |
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4. Get a TG Parameter (e.g., Volume for TG 2) |
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Send: F0 7D 02 10 00 03 F7 |
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- Logs GET for TG 2 param 0x0003, queries value, logs result. |
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5. Set a TG Parameter (e.g., Pan for TG 1 to 64) |
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Send: F0 7D 01 20 00 04 00 40 F7 |
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- Logs SET for TG 1 param 0x0004, updates value, logs result. |
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6. Get All Parameters for TG 0 |
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Send: F0 7D 00 10 F7 |
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- Logs and dumps all TG 0 parameters and values. |
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7. Malformed or Unknown Parameter |
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Send: F0 7D 10 12 34 F7 |
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- Logs GET for global param 0x1234, logs FAIL if unsupported. |
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*/ |
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@ -0,0 +1,35 @@ |
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//
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// performance_sysex_handler.h
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//
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// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
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// Copyright (C) 2025 The MiniDexed Team
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//
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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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//
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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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//
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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 <http://www.gnu.org/licenses/>.
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//
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#ifndef PERFORMANCE_SYSEX_H |
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#define PERFORMANCE_SYSEX_H |
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#include <cstdint> |
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#include <cstddef> |
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#include "performanceconfig.h" |
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class CMIDIDevice; |
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// Handles a MiniDexed performance SysEx message.
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// pMessage: pointer to the SysEx message (must be at least 2 bytes)
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// pDevice: the MIDI device to send the response to
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// perf: the performance config to operate on
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void handle_performance_sysex(const uint8_t* pMessage, CMIDIDevice* pDevice, CPerformanceConfig* perf, unsigned nCable = 0); |
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#endif // PERFORMANCE_SYSEX_H
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