Index PPI project layers

src/assets/ppi_header.h

@@ -2,9 +2,12 @@
 
 #include "foundation/result.h"
 
+#include <array>
 #include <cstddef>
 #include <cstdint>
 #include <span>
+#include <string>
+#include <vector>
 
 namespace pp::assets {
 
@@ -64,6 +67,43 @@ struct PpiProjectSummary {
     PpiBodySummary body;
 };
 
+struct PpiFacePayloadSummary {
+    bool has_data = false;
+    std::uint32_t x0 = 0;
+    std::uint32_t y0 = 0;
+    std::uint32_t x1 = 0;
+    std::uint32_t y1 = 0;
+    std::uint32_t body_payload_offset = 0;
+    std::uint32_t payload_bytes = 0;
+    std::uint32_t png_width = 0;
+    std::uint32_t png_height = 0;
+};
+
+struct PpiFrameSummary {
+    std::uint32_t duration_ms = 100;
+    std::array<PpiFacePayloadSummary, 6> faces;
+};
+
+struct PpiLayerSummary {
+    std::uint32_t stored_order = 0;
+    std::string name;
+    float opacity = 1.0F;
+    std::uint32_t blend_mode = 0;
+    bool alpha_locked = false;
+    bool visible = true;
+    std::vector<PpiFrameSummary> frames;
+};
+
+struct PpiBodyIndex {
+    PpiBodySummary summary;
+    std::vector<PpiLayerSummary> layers;
+};
+
+struct PpiProjectIndex {
+    PpiProjectLayout layout;
+    PpiBodyIndex body;
+};
+
 [[nodiscard]] pp::foundation::Result<PpiHeaderInfo> parse_ppi_header(
     std::span<const std::byte> bytes) noexcept;
 
@@ -76,7 +116,14 @@ struct PpiProjectSummary {
     PpiHeaderInfo header,
     std::span<const std::byte> body) noexcept;
 
+[[nodiscard]] pp::foundation::Result<PpiBodyIndex> parse_ppi_body_index(
+    PpiHeaderInfo header,
+    std::span<const std::byte> body);
+
 [[nodiscard]] pp::foundation::Result<PpiProjectSummary> parse_ppi_project_summary(
     std::span<const std::byte> bytes) noexcept;
 
+[[nodiscard]] pp::foundation::Result<PpiProjectIndex> parse_ppi_project_index(
+    std::span<const std::byte> bytes);
+
 }