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#ifndef O3D_COMMAND_BUFFER_COMMON_CROSS_CONSTANTS_H_
#define O3D_COMMAND_BUFFER_COMMON_CROSS_CONSTANTS_H_

#include "base/basictypes.h"

namespace command_buffer {

typedef int32 CommandBufferOffset;
const CommandBufferOffset kInvalidCommandBufferOffset = -1;

// Status of the command buffer service. It does not process commands
// (meaning: get will not change) unless in kParsing state.
namespace parser_status {
  enum ParserStatus {
    kNotConnected,  // The service is not connected - initial state.
    kNoBuffer,      // The service is connected but no buffer was set.
    kParsing,       // The service is connected, and parsing commands from the
                    // buffer.
    kParseError,    // Parsing stopped because a parse error was found.
  };
}

namespace parse_error {
  enum ParseError {
    kParseNoError,
    kParseInvalidSize,
    kParseOutOfBounds,
    kParseUnknownCommand,
    kParseInvalidArguments,
  };
}

// Invalid shared memory Id, returned by RegisterSharedMemory in case of
// failure.
const int32 kInvalidSharedMemoryId = -1;

}  // namespace command_buffer

#endif  // O3D_COMMAND_BUFFER_COMMON_CROSS_CONSTANTS_H_