Raimon Zamora
03631bf235
- [FIX] Sampling rate pujat a 44100Hz, el aliasing quasi desapareix - [NEW] Canals 2 i 3 implementats - [FIX] El control de duració en els canals 1 i 2 era incorrecte
40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
#include "audio_viewer.h"
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#include <SDL2/SDL.h>
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#define NUM_SAMPLES 256
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#define MAX_VOLUME 256
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namespace audio_viewer
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{
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SDL_Window *win = nullptr;
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SDL_Renderer *ren = nullptr;
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//SDL_Texture *tex = nullptr;
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uint8_t buffer[NUM_SAMPLES];
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uint8_t pos = 0;
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uint8_t screen[NUM_SAMPLES*MAX_VOLUME];
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void init()
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{
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win = SDL_CreateWindow("Audio viewer", 1, 1, 256, 256, SDL_WINDOW_SHOWN);
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ren = SDL_CreateRenderer(win, -1, 0);
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//tex = SDL_CreateTexture(ren, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, 256, 256);
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for (int i=0; i<NUM_SAMPLES; ++i) buffer[i] = 0;
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}
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void addsample(uint8_t sample)
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{
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buffer[pos] = sample;
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pos = (pos+1)%NUM_SAMPLES;
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}
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void refresh()
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{
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SDL_SetRenderDrawColor(ren, 0, 0, 0, 0);
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SDL_RenderClear(ren);
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SDL_SetRenderDrawColor(ren, 255, 255, 255, 255);
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for (int i=0; i<NUM_SAMPLES;++i) {
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SDL_RenderDrawLine(ren, i, buffer[(pos+i)%NUM_SAMPLES], i+1, buffer[(pos+i+1)%NUM_SAMPLES]);
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}
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SDL_RenderPresent(ren);
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}
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}
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