refactor(simu): use SDL & ImGui (#6233)

Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com> Co-authored-by: Malte Langermann <malte@langermann.net>
2025-07-20 11:30:05 +02:00
parent 14287cb91d
commit 4eddda034d
46 changed files with 2136 additions and 1577 deletions
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) EdgeTX
+ *
+ * Based on code named
+ *   opentx - https://github.com/opentx/opentx
+ *   th9x - http://code.google.com/p/th9x
+ *   er9x - http://code.google.com/p/er9x
+ *   gruvin9x - http://code.google.com/p/gruvin9x
+ *
+ * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "audio.h"
+#include "simuaudio.h"
+
+#include <stdint.h>
+#include <SDL.h>
+
+#define SIMU_AUDIO_FMT AUDIO_S16SYS
+
+static SDL_AudioDeviceID _sdl_audio_device = 0;
+
+#if !defined(SOFTWARE_VOLUME)
+
+static Uint8 _tmp_buf[AUDIO_BUFFER_SIZE * sizeof(audio_data_t)];
+static int _simu_volume = 0;
+
+void audioSetVolume(uint8_t volume)
+{
+  _simu_volume = SDL_MIX_MAXVOLUME * volume / VOLUME_LEVEL_MAX;
+}
+
+static void _fill_with_silence(Uint8* dst, uint32_t len)
+{
+  auto p = (audio_data_t*)dst;
+  auto end = p + len / sizeof(audio_data_t);
+
+  while (p < end) {
+    *p++ = AUDIO_DATA_SILENCE;
+  }
+}
+
+#endif
+
+void audioConsumeCurrentBuffer()
+{
+  while(true) {
+    auto nextBuffer = audioQueue.buffersFifo.getNextFilledBuffer();
+    if (!nextBuffer) return;
+
+    auto data = (const Uint8*)nextBuffer->data;
+    uint32_t len = nextBuffer->size * sizeof(audio_data_t);
+
+#if !defined(SOFTWARE_VOLUME)
+    assert(len <= sizeof(_tmp_buf));
+    _fill_with_silence(_tmp_buf, len);
+
+    SDL_MixAudioFormat(_tmp_buf, data, SIMU_AUDIO_FMT, len, _simu_volume);
+    data = _tmp_buf;
+#endif
+
+    SDL_QueueAudio(_sdl_audio_device, data, len);
+    audioQueue.buffersFifo.freeNextFilledBuffer();
+  }
+}
+
+bool simuAudioInit()
+{
+  SDL_AudioSpec wanted = {
+    .freq = AUDIO_SAMPLE_RATE,
+    .format = SIMU_AUDIO_FMT,
+    .channels = 1,
+    .silence = 0,
+    .samples = 1024,
+  };
+
+  SDL_AudioSpec have;
+  _sdl_audio_device = SDL_OpenAudioDevice(0, 0, &wanted, &have, 0);
+  if (!_sdl_audio_device) {
+    SDL_Log("Couldn't open audio: %s\n", SDL_GetError());
+    return false;
+  }
+
+  SDL_PauseAudioDevice(_sdl_audio_device, 0);
+  return true;
+}
+
+void simuAudioDeInit()
+{
+  if(_sdl_audio_device > 0) {
+    SDL_CloseAudioDevice(_sdl_audio_device);
+    _sdl_audio_device = 0;
+  }
+}