first commit

components/fast_jpeg/fast_jpeg.h

@@ -0,0 +1,81 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/display/display.h"
+
+#include <atomic>
+#include <cstddef>
+#include <cstdint>
+#include <string>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+class JPEGDEC;
+
+namespace esphome {
+namespace fast_jpeg {
+
+class FastJpeg : public PollingComponent {
+ public:
+  void set_url(const std::string &url) { this->url_ = url; }
+  void set_display(display::Display *display) { this->display_ = display; }
+  void set_x(int x) { this->x_ = x; }
+  void set_y(int y) { this->y_ = y; }
+  void set_big_endian(bool big_endian) { this->big_endian_ = big_endian; }
+
+  void setup() override;
+  void loop() override;
+  void update() override;
+  void dump_config() override;
+  float get_setup_priority() const override { return setup_priority::AFTER_CONNECTION; }
+
+  uint8_t *jpeg_buf() { return this->jpeg_buf_; }
+  size_t jpeg_cap() const { return this->jpeg_cap_; }
+  size_t *http_rx_len() { return &this->http_rx_len_; }
+  char *etag() { return this->etag_; }
+  uint8_t *back_buffer() { return this->back_; }
+  int pending_width() const { return this->pending_w_; }
+  int pending_height() const { return this->pending_h_; }
+  int pending_stride() const { return this->pending_stride_; }
+
+ protected:
+  static void task_fn_(void *param);
+  void fetch_once_();
+  bool decode_jpeg_(size_t len);
+  bool ensure_framebuffers_(int width, int height);
+  void paint_();
+  void clear_bars_once_();
+
+  std::string url_;
+  display::Display *display_{nullptr};
+  int x_{0};
+  int y_{-1};
+  bool big_endian_{true};
+
+  uint8_t *front_{nullptr};
+  uint8_t *back_{nullptr};
+  uint8_t *jpeg_buf_{nullptr};
+  ::JPEGDEC *decoder_{nullptr};
+  size_t fb_cap_{0};
+  size_t jpeg_cap_{0};
+  int pending_w_{0};
+  int pending_h_{0};
+  int pending_stride_{0};
+  int w_{0};
+  int h_{0};
+  int stride_{0};
+
+  TaskHandle_t task_{nullptr};
+  void *http_{nullptr};
+  size_t http_rx_len_{0};
+  std::atomic<bool> busy_{false};
+  std::atomic<bool> decoded_ready_{false};
+  bool bars_cleared_{false};
+  char etag_[80]{};
+  uint32_t frames_{0};
+  uint32_t last_fps_log_{0};
+};
+
+}  // namespace fast_jpeg
+}  // namespace esphome