From d608bef678fa97b3af910fa62598c55f33650825 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Juan=20Manuel=20Tom=C3=A1s?= Date: Fri, 17 Jul 2020 16:23:43 -0300 Subject: Restructure source files --- src/common/ipc.cpp | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 src/common/ipc.cpp (limited to 'src/common/ipc.cpp') diff --git a/src/common/ipc.cpp b/src/common/ipc.cpp new file mode 100644 index 0000000..7d46307 --- /dev/null +++ b/src/common/ipc.cpp @@ -0,0 +1,40 @@ +enum Operation { + OP_NULL = 0, + OP_MOVE1, + OP_MOVE2, + OP_MOVE4, + OP_MOVE8, + OP_INSERT, + OP_DELETE, + OP_SHOW +}; + +void encode2(int16_t data, int8_t *message, size_t offset) { + message[offset] = data & 0x00ff; + message[offset + 1] = (data & 0xff00) >> 8; +} + +int16_t decode2(int8_t *message, size_t offset) { + return (int16_t)message[offset + 1] << 8 & 0xff00 + | (int16_t)message[offset] & 0x00ff; +} + +void encode4(int32_t data, int8_t *message, size_t offset) { + encode2( data & 0x0000ffff, message, offset); + encode2((data & 0xffff0000) >> 16, message, offset + 2); +} + +int32_t decode4(int8_t *message, size_t offset) { + return (int32_t)decode2(message, offset + 2) << 16 & 0xffff0000 + | (int32_t)decode2(message, offset) & 0x0000ffff; +} + +void encode8(int64_t data, int8_t *message, size_t offset) { + encode4( data & 0x00000000ffffffff, message, offset); + encode4((data & 0xffffffff00000000) >> 32, message, offset + 4); +} + +int64_t decode8(int8_t *message, size_t offset) { + return (int64_t)decode4(message, offset + 4) << 32 & 0xffffffff00000000 + | (int64_t)decode4(message, offset) & 0x00000000ffffffff; +} -- cgit v1.2.3