- [NEW] [tia] AUDC0, AUDC1, AUDF0, AUDF1, AUDV0, AUDV1, GRP0, GRP1, ENAM0, ENAM1, ENABL

- [NEW] [tia] áudio en el seu propi mòdul, pa no tornar-se loco
- [NEW] Afegides frequències de rellotge per a NTSC, PAL, SECAM i PAL-M
- [NEW] Mòdul Speaker conectat a tia-audio

speaker.cpp

@@ -0,0 +1,88 @@
+#include "speaker.h"
+#include <SDL3/SDL.h>
+#include <vector>
+#include <stdlib.h>
+
+namespace speaker
+{
+    int sampling_freq = 44100;
+    uint16_t audio_buffer_size = 1024;
+    SDL_AudioStream* sdlAudioStream = nullptr;
+    uint8_t *sound_buffer = nullptr;
+    uint16_t sound_pos=0;
+    float t_sound=0.0f;
+    float cycles_per_sample = 0.0f;
+
+    std::vector<uint8_t(*)()> sources;
+
+    void init(float clock_frequency)
+    {
+        if (sound_buffer) quit();
+
+        SDL_AudioSpec audioSpec{SDL_AUDIO_U8, 1, sampling_freq};
+
+        sdlAudioStream = SDL_OpenAudioDeviceStream(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &audioSpec, nullptr, nullptr);
+
+        cycles_per_sample = clock_frequency / (float)sampling_freq;
+        sound_buffer = (uint8_t*)malloc(audio_buffer_size);
+        sound_pos = 0;
+        t_sound = 0.0f;
+        
+        enable();
+    }
+
+    void quit()
+    {
+        disable();
+        sources.clear();
+        if (sound_buffer) {
+            free(sound_buffer);
+            sound_buffer = nullptr;
+        }
+        if (sdlAudioStream) {
+            SDL_DestroyAudioStream(sdlAudioStream);
+            sdlAudioStream = nullptr;
+        }
+    }
+
+    void enable()
+    {
+        SDL_ResumeAudioStreamDevice(sdlAudioStream);
+    }
+
+    void disable()
+    {
+        SDL_PauseAudioStreamDevice(sdlAudioStream);
+    }
+
+    void register_source(uint8_t(*callback)())
+    {
+        sources.push_back(callback);
+    }
+
+    void update(const uint32_t dt)
+    {
+        t_sound += (float)dt;
+        if (t_sound >= cycles_per_sample)
+        {
+            t_sound -= cycles_per_sample;
+
+            uint32_t sample = 0;
+            for (auto callback : sources) sample += callback();
+            sample /= sources.size();
+            
+            sound_buffer[sound_pos++] = (uint8_t)sample;
+        }
+
+        if (sound_pos >= audio_buffer_size)
+        {
+            SDL_PutAudioStreamData(sdlAudioStream, sound_buffer, sound_pos);
+            sound_pos = 0;
+            
+            while (SDL_GetAudioStreamQueued(sdlAudioStream) > 2048)
+            { 
+                SDL_Delay(1); 
+            }
+        }
+    }
+}