94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/// @file Gfx2Video.ino
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/// @brief Demonstrates drawing to a frame buffer, which is used as source video for the memory player.
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/// The render pattern is alternating black/red pixels as a checkerboard.
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/// @example VideoTest.ino
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#ifndef COMPILE_VIDEO_STREAM
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#if defined(__AVR__)
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// This has grown too large for the AVR to handle.
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#define COMPILE_VIDEO_STREAM 0
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#else
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#define COMPILE_VIDEO_STREAM 1
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#endif
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#endif // COMPILE_VIDEO_STREAM
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#if COMPILE_VIDEO_STREAM
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#include <FastLED.h>
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#include "fl/bytestreammemory.h"
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#include "fx/fx_engine.h"
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#include "fl/ptr.h"
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#include "fx/video.h"
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#include "fl/dbg.h"
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using namespace fl;
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#define LED_PIN 2
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#define BRIGHTNESS 96
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#define LED_TYPE WS2811
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#define COLOR_ORDER GRB
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#define MATRIX_WIDTH 22
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#define MATRIX_HEIGHT 22
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#define NUM_LEDS (MATRIX_WIDTH * MATRIX_HEIGHT)
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CRGB leds[NUM_LEDS];
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const int BYTES_PER_FRAME = 3 * NUM_LEDS;
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const int NUM_FRAMES = 2;
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const uint32_t BUFFER_SIZE = BYTES_PER_FRAME * NUM_FRAMES;
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ByteStreamMemoryPtr memoryStream;
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FxEngine fxEngine(NUM_LEDS);
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// Create and initialize Video object
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XYMap xymap(MATRIX_WIDTH, MATRIX_HEIGHT);
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Video video(NUM_LEDS, 2.0f);
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void write_one_frame(ByteStreamMemoryPtr memoryStream) {
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//memoryStream->seek(0); // Reset to the beginning of the stream
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uint32_t total_bytes_written = 0;
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bool toggle = (millis() / 500) % 2 == 0;
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FASTLED_DBG("Writing frame data, toggle = " << toggle);
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for (uint32_t i = 0; i < NUM_LEDS; ++i) {
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CRGB color = (toggle ^ i%2) ? CRGB::Black : CRGB::Red;
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size_t bytes_written = memoryStream->writeCRGB(&color, 1);
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if (bytes_written != 1) {
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FASTLED_DBG("Failed to write frame data, wrote " << bytes_written << " bytes");
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break;
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}
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total_bytes_written += bytes_written;
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}
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}
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void setup() {
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delay(1000); // sanity delay
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FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS)
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.setCorrection(TypicalLEDStrip)
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.setScreenMap(xymap);
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FastLED.setBrightness(BRIGHTNESS);
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// Create and fill the ByteStreamMemory with test data
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memoryStream = ByteStreamMemoryPtr::New(BUFFER_SIZE*sizeof(CRGB));
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video.beginStream(memoryStream);
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// Add the video effect to the FxEngine
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fxEngine.addFx(video);
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}
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void loop() {
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EVERY_N_MILLISECONDS(500) {
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write_one_frame(memoryStream); // Write next frame data
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}
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// write_one_frame(memoryStream); // Write next frame data
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// Draw the frame
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fxEngine.draw(millis(), leds);
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// Show the LEDs
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FastLED.show();
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delay(20); // Adjust this delay to control frame rate
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}
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#else
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void setup() {}
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void loop() {}
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#endif // COMPILE_VIDEO_STREAM
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