gpu accelerated

src/protocol.h

@@ -0,0 +1,73 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define OWB_CONFIG_MAGIC 0x4f574243u /* OWBC */
+#define OWB_COMMAND_MAGIC 0x4f574245u /* OWBE */
+#define OWB_PROTOCOL_VERSION 2u
+#define OWB_MAX_STRING (16u * 1024u * 1024u)
+#define OWB_SHARED_MAGIC 0x4f574246u /* OWBF */
+#define OWB_SHARED_FRAME_FD 198
+#define OWB_SHARED_FRAME_SLOTS 2u
+
+struct owb_config_header {
+	uint32_t magic;
+	uint32_t version;
+	uint32_t width;
+	uint32_t height;
+	uint32_t fps;
+	uint32_t transparent;
+	uint32_t hardware_acceleration;
+	uint32_t url_length;
+	uint32_t css_length;
+};
+
+struct owb_shared_frames {
+	uint32_t magic;
+	uint32_t version;
+	uint32_t width;
+	uint32_t height;
+	uint32_t stride;
+	uint32_t slots;
+	uint64_t sequence[OWB_SHARED_FRAME_SLOTS];
+	uint8_t pixels[];
+};
+
+static inline size_t owb_frame_size(uint32_t width, uint32_t height)
+{
+	return (size_t)width * (size_t)height * 4u;
+}
+
+static inline size_t owb_shared_size(uint32_t width, uint32_t height)
+{
+	return sizeof(struct owb_shared_frames) +
+	       owb_frame_size(width, height) * OWB_SHARED_FRAME_SLOTS;
+}
+
+static inline uint8_t *owb_shared_slot(struct owb_shared_frames *shared, uint32_t slot)
+{
+	return shared->pixels + owb_frame_size(shared->width, shared->height) * slot;
+}
+
+enum owb_command_type {
+	OWB_MOUSE_MOVE = 1,
+	OWB_MOUSE_CLICK = 2,
+	OWB_MOUSE_WHEEL = 3,
+	OWB_FOCUS = 4,
+	OWB_KEY = 5,
+	OWB_RELOAD = 6,
+};
+
+/* Fixed-size control messages keep the renderer's nonblocking parser simple. */
+struct owb_command {
+	uint32_t magic;
+	uint32_t type;
+	int32_t x;
+	int32_t y;
+	int32_t value1;
+	int32_t value2;
+	uint32_t modifiers;
+	uint32_t text_length;
+	char text[64];
+};