Import of the watch repository from Pebble

src/fw/applib/graphics/gdraw_command_private.h

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "gdraw_command.h"
+#include "gdraw_command_list.h"
+#include "gdraw_command_image.h"
+#include "gdraw_command_frame.h"
+#include "gdraw_command_sequence.h"
+
+#include "applib/graphics/gtypes.h"
+#include "util/pack.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define GDRAW_COMMAND_VERSION (1)
+
+#define PDCS_SIGNATURE MAKE_WORD('P', 'D', 'C', 'S')
+#define PDCS_SIZE_OFFSET sizeof(PDCS_SIGNATURE)
+#define PDCS_DATA_OFFSET (PDCS_SIZE_OFFSET + sizeof(uint32_t))
+
+#define PDCI_SIGNATURE MAKE_WORD('P', 'D', 'C', 'I')
+#define PDCI_SIZE_OFFSET sizeof(PDCI_SIGNATURE)
+#define PDCI_DATA_OFFSET (PDCI_SIZE_OFFSET + sizeof(uint32_t))
+
+struct __attribute__((__packed__)) GDrawCommand {
+  GDrawCommandType type:8;
+  struct {
+    uint8_t hidden:1;
+    uint8_t reserved:7;
+  };
+  GColor stroke_color;
+  uint8_t  stroke_width;
+  GColor fill_color;
+  union {
+    struct { // path
+      bool path_open;
+    };
+    struct { // circle
+      uint16_t radius;
+    };
+  };
+  union {
+    struct {
+      uint16_t num_points;
+      GPoint points[];
+    };
+    struct {
+      uint16_t num_precise_points;
+      GPointPrecise precise_points[];
+    };
+  };
+};
+
+struct __attribute__((__packed__)) GDrawCommandList {
+  uint16_t num_commands;
+  GDrawCommand commands[];
+};
+
+struct __attribute__((__packed__)) GDrawCommandImage {
+  uint8_t version;
+  uint8_t reserved;
+  GSize size;
+  GDrawCommandList command_list;
+};
+
+struct __attribute__((__packed__)) GDrawCommandFrame {
+  uint16_t duration;
+  GDrawCommandList command_list;
+};
+
+struct __attribute__((__packed__)) GDrawCommandSequence {
+  uint8_t version;
+  uint8_t reserved;
+  GSize size;
+  uint16_t play_count;
+  uint16_t num_frames;
+  GDrawCommandFrame frames[];
+};