video/ps3eye: buffer flush

1 files changed, 40 insertions, 0 deletions

diff --git a/video-ps3eye/shm-layout.hpp b/video-ps3eye/shm-layout.hpp
new file mode 100644
index 00000000..7fa29115
--- /dev/null
+++ b/video-ps3eye/shm-layout.hpp
@@ -0,0 +1,40 @@
+#pragma once
+#include <cstdint>
+
+namespace ps3eye {
+
+struct shm_out {
+    enum class mode : uint8_t { qvga, vga, };
+    enum class status : uint8_t { starting, running, fail, terminate, };
+
+    uint8_t settings_updated;
+    uint16_t framerate;
+    mode resolution;
+    status status_;
+    uint8_t sharpness, contrast, brightness, hue, saturation;
+    uint8_t gain, exposure, auto_gain, awb, test_pattern;
+};
+
+struct shm_in {
+    uint8_t settings_updated_ack;
+    uint8_t timecode;
+    union {
+        uint8_t data_320x240[320][240][3];
+        uint8_t data_640x480[640][480][3];
+    };
+};
+
+struct shm {
+    static constexpr unsigned _cacheline_len = 64;
+    static constexpr unsigned _padding_len =
+        (_cacheline_len - (sizeof(shm_in) & (_cacheline_len - 1))) & (_cacheline_len - 1);
+
+    using resolution = shm_out::mode;
+    using status     = shm_out::status;
+
+    shm_out out;
+    const char* _padding[_padding_len];
+    shm_in in;
+};
+
+} // ns ps3eye